NSW Module Resource Manual for the National Metal and

NSW Module Resource Manual for the National Metal and Engineering Courses

NM06 CAD A

Teaching Guide

Mechanical Stream

CONTENTS

Feedback Acknowledgments

Introduction Teaching requirements and resources Module organiser

National Module Descriptor

Assessment guidelines NSW implementation of NMEC NM06 assessment guide Constructing competency tests Sample competency tests A and B

Module sections Section 1: The CAD system Section 2: Drawing tools Section 3: Editing tools Section 4: Transformation tools Section 5: Producing a drawing Section 6: Modifying existing CAD drawing Section 7: Producing a hard copy

Answers to review questions

Student results

NM06CADA Teaching Guide November 1994

1

3 4

5 6 9

11

15 15 16 18 21

75 75 76 77 78 79 80 81

83

91

FEEDBACK

Your feedback is essential for improving the quality of these materials.

Please advise the appropriate Industry Specialist of any changes, additions, deletions or anything else that you believe would improve the quality of this Teaching Guide and Student Workbook. Don't assume that someone else will do it.

Your comments can be made by photocopying the relevant pages and including your corrections or suggestions.


Send your comments to:

Engineering Services Training Division PO Box 218 Bankstown NSW 2200

3 it'@:r1

ACKNOWLEDGMENTS

I am grateful to the people who helped to make this module possible. To Aian Soden and Pauline Heiler for their review of the manuscript and suggested additions and revisions. I would also like to thank the following companies for allowing us to include illustration of their CAD software in this module.

• Ashlar Inc. (Ashlar® Vellum™ ). California. • Autodesk, Inc. (AutoCAD®). Victoria • Claris Corporation. (Claris CAD®). California.

Finally, to my family for their patience and understanc!ing during the many hours that this project took my time from them.

John Stathakis Senior Technology Specialist CAD/CAM TAFE Commission

4 NM06CADA Teaching Guide November 1994

INTRODUCTION

This module is part of the mechanical stream in the TAPE Metal and Engineering National Curriculum Project and is the third of three modules designed for the Basic CAD Operator level. The prerequisite for this module is NBB12 - Drawing Interpretation 1. This module NM06 builds on knowledge developed in prerequisite modules. After completing this module the student should be able to produce simple drawings using a CAD system. The student should become familiar with at least one CAD system and be able to logically plan an efficient approach to produce a simple drawing.

In terms of CAD software this module is generic ie., it doesn't cover a specific CAD system but rather covers the fundamental concepts and procedures. For the purpose of this module the CAD procedures, and tools/functions/commands have been grouped under seven headings, which are:

Section 1. The CAD system Deals with me management and 'user interface' issues.

Section 2. Drawing Tools Deals with CAD tools that produce elements such as lines, points, arcs, dimensioning etc. and highlights the importance of positional and geometric constraint modifiers as well as drawing aids.

Section 3. Editing Tools Deals with CAD tools that work on existing elements that produce fillets, chamfers or splitting an element into two elements etc.

Section 4. Transformation Tools This tool group is similar to editing tools and include functions such as move, copy, polar and rectangular duplication, scale etc.

Section 5. Producing a drawing This section allows the student to put all the 'tools' together and produce a CAD document Data management is covered ie. use of layers, colour and line types and efficient construction techniques based on the available CAD tools.

Section 6. Modifying existing CAD drawing. This section section 5 allows for the use of CAD tools covered in sections 1,2,3 and 4 in making 'changes' to existing CAD documents. By 'changes' we mean either deleting existing elements and redefming them or applying a CAD tool/command that allows changes to the element data.

Section 7. Producing a hard copy. This section covers the type of output devices that may be connected to CAD systems and the actual process of readying that device for the production of a 'hard' copy.


5

The CAD system that you are using mayor may not use the tool group labels above such as 'editing tools', 'transformation tools' etc., however they will be grouped in some way. The user manual of each CAD software highlights the grouping of its functions I commands through the use of a 'menu tree'. It is useful to identify how the tool groups are implemented from the onset as this will allow you to locate them quickly and easily. Indeed mastering other CAD systems is just a matter of identifying how the tool groups are implemented at the 'user interface' leveL

Teaching requirements and resources

Appropriate teacher skills Approved teachers of this subject are required to have ~ompleted an appropriate Engineering Associate Diploma and have a minimum of five (5) years relevant drawing office experience, including a minimum of two (2) years on CAD systems appropriate to the level of this subject.

Minimum equipment To enable the students to complete this module they will need access to: • computer system (including peripherals) that can support CAD software • CAD software • plotter A3 • overhead projector panel or video distribution system or a large monitor for

demonstrating to students. • quick reference manual

Consumables • Plotting paper A3 and A4 • Plotter pens (for ASllOO) • floppy disks for student data

6 NM06CADA Teaching Guide November 1994

Module components

Thacher Guide

Student Workbook

pI1w1>lsed by stu.dent

CAD Software

Reference

CAD Software Quick Reference

Card

(ibt stu.dent)

• Dau files Eg.. sam.ple skill pru:tice. rom~ 1»St '-'Ctiuiti.es a!l.d tem.phw dooum.ents. (ibt stu.dent)

The above diagram represents the resources that are required for the teaching of this module. A quick reference card should be given to the student If the card is not supplied by the software developers the teacher should produce one.· The CAD data files should be produced by the teacher using the examples in this module.

References Ashlar Inc. (1990). Ashlar® Vellum™ User Guide and Reference Manual. California: Ashlar inc.

Ashlar Inc. (1990). Ashlar® Vellum™ Tutorial. California: Ashlar Inc. Autodesk, Inc. (1990). AutoCAD® Release 12 Training Manual. Victoria: Autodesk

') Bertoline G. R. (1988). Fundamentals of CAD. Ohio: Delmar Publishers Inc.

Boundy A W. Engineering Drawing, (4th ed). McGraw-hill book company, Sydney

George Omura, (1991). LEARN CAD NOW. Washington: Microsoft Press.

Gerlach G. M. (1987). Transition to CADD. New York: McGraw-Hill.

Claris Corporation. (1988). Claris CAD User's Guide. California: Claris Corporation

Claris Corporation. (1988). Claris CAD Tutorial Workbook. California: Claris Corporation.

Claris Corporation. (1988). Claris CAD Quick Reference. California: Claris Corporation.


7

Davies B.L., Robotham A.I. and Yarwood A. (1991). COMPUTER-AIDED Drawing and Design. Chapman & Hall.

Hawkes B. (1988). The CADCAM Process. Great Britain: Pitman Publishing

HRDD-Computer Training. (1991). An Introduction to AutoCAD®. Sydney: TAFE Commission.

Lamit L. G. and Paige V. (1987). Computer-Aided Design and Drafting: CADD. Ohio: Merrill Publishing Company.

Standards Australia. (1991. Computer graphics-Computer Aided Design (CAD)-Guide for structuring of computer graphics information. Sydney: Standards Australia.

Standards Association of Australia .. (1984).Technical Drawing Part !OI-General Principles. Sydney: The Standards Association of Australia.

Point Control Co. (1992). SmartCAM Reference Manual. Oregon: Point Control Co.

The Cadds Man Ltd. (1991). CADDSMAN Reference Manual. South Australia: The Cadds Man Ltd.

The Institution of Engineers Australia. The Australian Engineering Drawing Handbook, Part one, Standards Australia.

Software Ashlar Inc. (1990). Ashlar® Vellum™. California.

Autodesk, Inc. (1990). AutoCAD® Release 12. Victoria

Point Control Co. (1992). SmartCAM V 7.0. Oregon.

The Cadds Man Ltd. (1991). CADDSMAN V 3.1. South Australia.

Claris Corporation. (1988). Claris CAD V 2.0. California.

QIKDRAW SYSTEMS (1992). QIKDRAW. South Australia.

Autodesk, Inc. (1990). Generic CCAD® V 6.0. Victoria

Cadkey, Inc. (1992). CADKEY@ Light™ V 5.0. Connecticut

Design Futures, Inc. (1992). IDRAW®. New York

i'1i1:t1 8 NM06 CADA Teaching Guide November 1994

Module organiser

Use this module organiser to help time the delivery of the module.

1 The CAD system (1,4,7) (theory/practical) Skill practice: The CAD system

COMPElENCY JEST (practical) Basic CAD Operations learning outcome 1

2

· learning outcome 4 · learning outcome 7

Drawing tools 2 (theory/practical) Skill practice: Drawing tools

COMPEJENCY JEST (practical) Drawing tools · learning outcome 2

3 Editing tools 2 (theory/practiCal) Skill practice: Editing tools

COMPElENCY JEST (practical) Editing tools · learning outcome 2

4 Transformation tools 2 (theory/practical) Skill practice: Transformation tools

COMPEJENCY JEST (practical) Transformation tools outcome 2

5 Producing a drawing 3 (theory/practical) Skill Construction

COMPElENCY JEST (practical) Producing a drawing · learning outcome 1 and 3

6 existing CAD drawing (theory/practical)

COMPElENCY TEST (practical) Modifying existing CAD drawings · learning outcome 5

7 Producing a hard copy (theory/practical)

COMPElENCY JEST


(practical) Producing a hard copy · learning outcome 6

9

2 hrs 30 mins

10 mins

6 hours

30 mins

3 hrs

20 mins

3 hrs

20 mins

15 hrs

2 hrs

1 hr 30 ruins

30 mins

Ihr

10 mins

NATIONAL MODULE DESCRIPTOR

TAFE METAL AND ENGINEERING NATIONAL CURRICULUM PRO.JECT ELECTRICALIELECTRONIC STREAM

MODULE:

PURPOSE:

NOMINAL DURATION:

COMPUTER AIDED DRAFTING A

To enable students to produce simple CAD drawings.

One module

This module is designed on the assumption that most of the students will achieve the competencies specified in 35 to 40 hours. The length of time taken to complete a module will vary depending on factors such as teaching method used, knowledge and skills at entry and individual students ability.

PREREQUISITES: EA061 Engineering Graphics or NBB12 Engineering Drawing Interpretation 1.

LEARNING OUTCOMES On completion of this module the learner will be able to:

1. Operate the CAD software for drawing initialisation.

2. Construct basic shapes using CAD.

3. Produce a basic drawing to the relevant standards (ASllOO).

4. Save and transfer a drawing file to a specified drive or directory.

5. Modify existing CAD drawings.

6. Plot a CAD drawing.

7. Perform the appropriate exit and shutdown procedures.

STUDENTS SHOULD BE MADE AWARE OF OCCUPATIONAL HEALTH AND SAFETY ISSUES IN ALL SITUATIONS AND BE EXPECTED TO DEMONSTRATE SAFE WORKING PRACTICES AT ALL TIMES.

TAFE METAL & ENGINEERING NATIONAL CURRICULUM PROJECT Copyright NSW Department of TAFE, 1990 Copies may be made by T AFE Authorities without restriction MODULE (NM06) - SEPTEMBER 1990 11

OUTLINE OF CONTENT:

ON THE JOB TRAINING:

This module contains:

1. For given software packages identify the screen display areas set basic parameters select appropriate command input methods

2. Geometric construction methods angles circles and arcs polygons tangents

3. CAD drawings and system use produce simple drawings savelupdate drawing detail to nominated drivel directory access/edit existing drawings plot drawings to pre-set parameters exiting/shutting down

For consolidation, the material in this module should be linked with, and complemented by relevant on-job skill practice or other equivalent experience.

PERFORMANCE CRITERIA: The criteria for each learning outcome should be:

Learning Outcome 1

Assessment:

Perfonnance:

Short answer questions Practical exercises

a. List the procedure for entering the CAD system.

b. List the screen display areas and state their functions.

c. Set basic parameters for a given exercise.

d. State the reasons for using pre-defmed parameters.

TAFE METAL & ENGINEERING NATIONAL CURRICULUM PROJECT Copyright NSW Department of TAFE, 1990 Copies may be made by T AFE Authorities without restriction MODULE (NM06) - SEPTEMBER 1990 12

Learning Outcome 2

Assessment:

Perfonnance:

Learning Outcome 3

Assessment:

Perfonnance:

Learning Outcome 4

Assessment:

Perfonnance:

Learning Outcome 5

Assessment:

Perfonnance:

Practical exercises

a Demonstrate the ability to draw points, lines, arcs, circles, polygons, ellipses, tangents and text given coordinates, dimensions and sizes.

b. For given exercises, demonstrate the ability to edit or modify drawing elements.

Practical exercises

a. For given drawing exercises, produce CAD drawings including, lines, arcs, circles, hatching or filling of areas, text, dimensions and tangents.

Practical exercises

a Save/update drawing detail to nominated drive or directory.

Practical exercises

a Recall and existing CAD drawing file from a nominated drive or directory.

b. Modify an existing CAD drawing file from a nominated drive or directory.

c. Modify and existing CAD drawing by adding, deleting or changing drawing elements within that drawing.

TAFE METAL & ENGINEERING NATIONAL CURRICULUM PROJECT Copyright NSW Department of T AFE, 1990 Copies may be made by T AFE Authorities without restriction MODULE (NM06) - SEPTEMBER 1990 13

Learning Outcome 6

Assessment:

Perfonnance:

Learning Outcome 7

Assessment:

Practical exercises

a. Given a specific set of plotting conditions, plot a drawing to the appropriate standard.

Practical exercises

Perfonnance: a. Demonstrate correct exit procedures from the CAD system.

b. Demonstrate the correct shut-down procedures for all hardware in use.

TAFE METAL & ENGINEERING NATIONAL CURRICULUM PROJECT Copyright NSW Department of TAFE, 1996 Copies may he made by T AFE Authorities without restriction MODULE (NM06) - SEPTEMBER 1996 14

ASSESSMENT GUIDELINES

NSW implementation of NMEC

Assessing competency To be assessed as competent, students must: o show competency on each learning outcome, and preferably on each

performance criterion of each outcome, as prescribed in the National Module Descriptor.

o be tested separately on each learning outcome, either in an individual test or in a particular section of a larger test.

The student rollbook must clearly report competency for each learning outcome.

Retesting If a student does not show competency on a fIrst attempt at a test: o retest only the learning outcome not achieved. For instance, if the student fails

both the theory and practical performance criteria of a learning outcome, retest all theory questions and all practical tasks for that outcome. But if only the theory parts of an outcome are failed, retest the theory only.

o before retesting, give structured tutorial assistance so that the student's second attempt is likely to succeed. Such tutorial work may include special classes, structured homework, on-the-job assistance or a practical project.

Recording test results You can use the Student Results sheet (at the end of this manual) for this purpose. The results for each attempt at the separate learning outcomes should be recorded as follows:

o = PASS: indicating competency in the learning outcome.

II! = INCOMPLE1E: indicating competency was not achieved at the fIrst attempt.

o = FAlL: indicating competency was not achieved at the second attempt.

To report module results, use only P or F.

Practising for competency The review questions and skill practice exercises in the Student Workbook are not to be used for formally assessing student competency. They are designed only to help students prepare for the competency tests.

NM06 CAD A Teaching Guide November 1994

15

NM06 assessment guide

There are seven learning outcomes for this module: • learning outcome 1, in Sections 1, 5 • learning outcome 2, in Sections 2, 3, 4, 6 • learning outcome 3, in Section 5 • learning outcome 4, in Section 1 • learning outcome 5, in Sections 2, 3, 4, 6 • learning outcome 6, in Section 7 • learning outcome 7, in Section 1.

Learning outcome 1 Competency is assessed by: o a 10 minute (nominal time) practical competency test.

Students must: o perform all practical tasks and activities to specification ie. accuracy and time.

Learning outcome 2 Competency is assessed by: o three practical competency test:

• 30 minute test - drawing tools • 15 minute test - editing tools • 15 minute test - transformation tools.

Students must: o select tbe appropriate CAD tools for tbe task. ego drawing tools, editing tools

and transformation tools, apply one of tbe metbods associated witb tbe tools in completing simple shapes.

Learning outcome 3 Competency is assessed by: o practical exercise in a 2 hour competency test.

Students must: o complete tbe practical exercise witbin tbe time specified and to comply witb

AS 1100.

Learning outcome 4 Competency is assessed by: o a 5 minute (nominal time) practical competency test. (This learning outcome is

assessed at tbe same time as learning outcome 1).

Students must: o save me to specified drive/directory.

16 NM06CADA

Teaching Guide November 1994


Students must: o make five changes/modifications to existing elements on a drawing.


Students must: o plot a CAD file on a specific plotter* given pen assignment specifications.

Complete the task within 10 minutes (nominal time) to the standard specified ie., to AS II 00, line quality, positioning etc .. (* or other output device of similar output quality)

Learning outcome 7 Competency is assessed by: o a 5 minutes (nominal time) practical competency test. (This learning outcome is

assessed at the same time as learning outcome 1).

Students must: o use the appropriate exit and shut down procedure.

NM06CADA Teaching Guide NOVember 1994

17 ", it:n

Constructing competency tests: guidelines

To construct your own tests follow the assessment requirements and penonnance criteria in the National Module Descriptor.

Test each learning outcome requiring short-answer questions or practical exercises. ~uly the learning outcomes should be tested, not associated knowledge or skills that are not part of the learning outcome.

The two sample tests on the following pages provide a guide to the fonnat and structure of competency tests for this module.

Theory tests D Use a mix of short-answer type questions. But please avoid:

- true/false questions; - completion questions; - multiple choice calculation questions (calculation questions should be open-

ended).

D Questions should match as closely as possible the length and level of difficulty of equivalent questions in the sample tests.

D The number of questions per outcome in your test should be similar to the number of questions in the sample test.

D Your test should be of similar duration to a sample test.

D Do the test yourself to check that questions and answers match and to determine duration of the test.

Practical tests D Design each practical task so it requires the same skill level as the equivalent

task in the sample practical test.

D Tests should be of similar duration to sample tests.

18 NM06 CAD A


Skill practice activities

Skill practice activities that are suggested in this module are presented in the format shown below. The activities should be provided to the student in electronic format (CAD data mes), allowing the student to repeat the activities as many times as needed. The activities presented in this module isolate CAD skills and allow for qnick assessment. They allow you to quickly identify weak areas the student might need some additional assistance. The activities should contain all information necessary for completion. The format for assessment activities is the same, except that instructions focus on what is required rather than how it's done.

Module NMIl6 Compctrocy _-L02 Ilmwina tools

~

~ To.tk: 2 llD<: tools IICtivily

"'"'Jl'<'rd IICtivily

0\ ®O IIlStrJlctltms

Dtaw. __ 'UJdrcle 'A'oodperpeudicularUJ_ 'D'. Usepa;l1looal ood...".,.,uic modifies

The activities should be grouped in terms of tool type eg., drawing, editing etc .. The activities can be aligned vertically allowing the participants to scroll/pan up or down to view the next activity.


-=: ... ::~:"'.

r1 4 r ~1='I.r-:="-

-=.,-".

~ ::::!"'-

6\ 0 ~.:r.:'::~'-_O"Y

';1:-' :::1.'-

~ ¥ a I~':----·- ... .---....... _.

~f"M

r1 , r ~:I=";=:= ......

::::!"'-

~ 0\ D ... ~.::r::'::~'--I"'Y

19

pur. ot SC10Il upotda01ll. 10 1riew E'a.c 11 a.ctroity

Sample competency tests A and B

The following are two sample competency tests. These matching tests contain practical tasks designed to assess each learning outcome in this module.

NM06 Assessment guide for this module shows how to use these sample tests to assess the learning outcomes.

NM06 CADA Teaching Guide November 1994

21 &,1i1:t1

Sample competency test A

Learning outcomes 1, 4, 7

Practical task: Basic CAD operations

Time 15 minutes

Task To demonstrate your understanding and skill in basic CAD operations.

Resources • CAD system • sample CAD me (provided by teacher) • reference manual

Procedure 1. Inform the teacher you are about to attempt the competency test. Your teacher

will assess you as you perform the activities.

2. Perform the following tasks: -switch the computer system ON (if required) -launch the CAD application -read-in / open the document (your teacher will specify path and me name) -view the document using the following viewing functions:

-zoom in / out / all / window -pan / scroll

-invoke system help on using a drawing tool ego Line, circle etc.(if available).

3. Describe to the teacher the 'user interface' of the CAD system with regards to: -identifying the graphics area (workspace) -menu structure and tools/functions selection methods -identifying input fields, dialogue boxes, check boxes,scroll bars etc. (if available) -data input methods

-keyboard -mouse -graphic tablet

-undo/redo facility (if available) -methods for object (entity) selection

-single element -multiple elements ego boX/window -entire document

22 NM06CADA


Assessment You will pass this test if you:

Learning outcome 1 D Demonstrate the procedure for system startup (hardware and software). D read-infopen a document (specified by teacher) into the CAD application. D view a document using the following viewing functions:

-zoom infout/all -zoom window -pan/scroll

D invoke system HELP (if available). D describe the 'user interface' of the CAD system with regards to:

-identifying the graphics area (workspace) -menu structure and tools/functions selection methods -identifying input fields, dialogue boxes, check boxes,scroll bars etc .. (if

available) -data input methods



-single element -multiple elements eg., box/window -entire document

Learning outcome 4 D save the document to a specified drive/directory.

Learning outcome 7 D exit the application using standard procedure D perform the appropriate system shut down procedure.


23

Practical task: Drawing tools

Time 30 mins.

Task To demonstrate the use of drawing tools and their methods, positional and geometric constraint modifiers and drawing aids.

Resources • CAD system • CAD filets (provided by teacher) • Reference manual

Procedure 1. Load file specified by teacher. 2. Complete t:ile following activities by using the appropriate drawing tools,

drawing aids and/or modifiers. 3. Save the completed file to disk using the naming convention used in your class. 4. Submit the completed activity to the teacher (eg. floppy disk).


Learning outcome 2 Select and apply the appropriate drawing tool and method in the construction of basic shapes/profiles: o Drawing tools and methods:

• Line • Point • Polygons • Circle • Arcs • Ellipses • Hatch • Text

i"iI:t1 24 NM06CADA


o Positional and geometric constraint modifiers: • End point • Centre / middle • futersection / invisible • Distance along / reference to • Point on / attached to • Tangent • Perpendicular • Parallel

o Drawing aids: • Enquiry / get info command • Positional readout • Visual grid • Positional grid • Line constraint


25

i"iI:t1

ModuleNM06 Competency test -L02 Drawing tools Task: 1 Line tool

®

r1 @

Instructions Draw a line from the endpoint of line "A" to the endpoint of line "Bu. Use positional and geometric modifiers.


0\ @O ®

Instructions Draw a line tangent to circle "A" and perpendicular to line ''B''. Use positional and geometric modifiers.


>Zo ~ o® Instructions Draw a line from intersection "A" to the centre of circle ''B''. Use positional and geometric modifiers.

26 NM06CADA



ModuieNM06 Competency test -L02 Drawing tools Task: 4 IOL Line tool

10 @ o® Instructions Draw a line 10 units from the end of line "A" and tangent to circle ''E''. Use positional and geometric modifiers.

ModuieNM06 Competency test -L02 Drawing tools Task: 5 Line tool

a

a

~ a 0

a a

@ a a

®

Instructions Draw a line through the points shown starting at point "A" and finishing at point "B". Use positional modifiers.

ModuieNM06 Competency test -L02 Drawing tools Task: 6 Polygon tool

0 Instructions Draw a hexagon circumscribed about a 30 unit circle. Use the appropriate drawing tools, drawing aids and positional/geometric modifiers.

27

ModuleNM06 Competency test -L02 Drawing tools Task: 7 Polygon tool

0 Instructions Draw a bexagon inscribed about a 30 unit circle. Use the appropriate drawing tools, drawing aids and positional/geometric modifiers.

ModuleNM06 Competency test -L02 Drawing tools Task: 8 Point tool

D D

"'- anchor point a, anchor point

Instructions Place the following points relative to the anchor point. PI x=40 y= 25 P2 Distance = 35 Angle = 60

ModuleNM06 Competency test -L02 Drawing tools Task: 9 Circle tool

-$-Instructions Draw a 25 unit diameter circle with its centre at the intersection of the two lines. Use the appropriate drawing tools, drawing aids and positional/geometric modifiers.

28 NM06CADA




B-Instructions Draw a 25 unit diameter circle with its centre at the midpoint of the line. Use the appropriate drawing tools, drawing aids and positional/geometric modifiers.

ModuleNM06 Competency test -L02 Drawing tools Task: II Circle tool I I

~ -V-Instructions ~aw a circle tangent to the three lines given. Use the appropriate drawing tools, drawing aids and positional/geometric modifiers.

ModuleNM06 Competency test -L02 Drawing tools Task: 12 Arc tool

~ )/ CD ~

Instructions Draw an arc using the three points "S","I" and "E". Use the appropriate drawing tools, drawing aids and positional/geometric modifiers.

29

ModuieNM06 Competency test -L02 Drawing tools Task: 13 Arc tocl

EE Instructions Draw an semicircle using the ARC drawing tool. Use the appropriate drawing aids and positionaJlgeometric modifiers.

ModuleNM06 Competency test -LO 2 Drawing tocls Task: 14 Arc tocl

hn _l I D_ Instructions Draw a 5 unit radius groove using the ARC drawing tool. Use the appropriate drawing aids and positional/geometric modifiers.

ModuieNM06 Competency test -L02 Drawing tocls Task: 15 Ellipse toe1

C) Instructions Draw an ellipse to the following specifications: -major axis = 40 units -minor axis = 20 units

30 NM06CADA



ModuieNM06 Competency test -L02 Drawing tools Task: 16 Dimensioning-linear

Instructions Apply a horizontal and vertical dimension to the above shape to ASl100

ModuleNM06 Competency test -L02 Drawing tools Task: 17 Dimensioning-linear

cSh ~ Instructions Apply a horizontal aud vertical dimension to the above shape to ASllOO

ModuleNM06 Competency test -L02 Drawing tools Task: 18 Dimensioning-linear

Ir~i -$- -$-Instructions Dimension the centre distance between the two holes to ASllOO.

31 't1 iI:n


Instructions Dimension the component to ASllOO.

ModuieNM06 Competency test -L02 Drawing tools Task: 20 Dimensioning-datum

~ ~L Datum edge

Instructions

1

Datum dimension the component to ASl100.

ModuieNM06 Competency test -L02 Drawing tools Task: 21 Dimensioning-chain

1 _L

r---,I 1,-------; J _____ J_

Instructions Chain dimension the component to ASl100.

32 NM06CADA



ModuleNM06 Competency test -L02 Drawing tools Task: 22 Dimensioning-angular

~u j / [Z1 I

Instructions Dimension the angular feature of the part to ASllOO.

ModuleNM06 Competency test -L02 Drawing tools Task: 23 Dimensioning-notes

Instructions

I

Dimension by "notes" the 4 holes on 28 unit PCD to ASllOO.

ModuleNM06 Competency test -L02 Drawing tools Task: 24 Dimensioning-dialcen

$" Instructions Dimension the shaft by applying a center mark and the diameter to ASllOO.

33

ModuleNM06 Competency test -L02 Drawing tools Task: 25 Dimensioning-rad/cen

~tl

Instructions Dimension the two radii on the shaft to ASl100.

ModuleNM06 Competency test -L02 Drawing tools Task: 26 Dimensioning-rad/ceo.

"< Instructions Dimension the radii on the shaft to ASllOO.

ModuleNM06 Competency test -L02 Drawing tools Task: 27 Sectioning

• Instructions Apply a hatch pattern to the component spacing = 3 units, angle = 30

34

"-

+


Practical task 2: Editing tools

Time 15 mins

Task To demonstrate the use of editing tools.

Resources • CAD system • CAD fUels (provided by teacher) • Reference manual

Procedure 1. Load fUe specified by teacher. 2. Complete the following activities by using the appropriate editing tools. 3. Save the completed fUe to disk using the naming convention used in your class. 4. Submit the completed activity to the teacher (eg. floppy disk).


Learning outcome 2 Select and apply the appropriate editing tool and method in the construction/modification of ten basic shapes/profUes: - delete - filletlblend

chamfer trirnlextend

_ break/split _ modify/change


35

ModuieNM06 Competency test-LO 2 oQtsiO!=radills , / Editing tools

I Task: 1 Filletlblend tool

I

D " I I inside radius ,

Instructions Apply an inside radius of 1.5 units and outside radius of 5 units to every comer of the shape.

ModuleNM06 Competency test-LO 2 Editing tools I Task: 2 Filletlblend tool

I

[J I

Instructions Apply a 5 unit blend at the intersection of the two arcs.

ModuieNM06 Competency test-LO 2

~ 7 I Editing tools Task: 3 Chamfer tool

J I

rh 1_ Instructions Apply a 2 unit by 45 degrees chamfer at corners "1" and "2". Apply a chamfer of 5 unit horizontal edge distance and 3 unit vertical edge distance.

36 NM06CADA

Teaching Guide November 1994 .


ModuleNM06 Competency test-LO 2 --Editing tools Task: 4 I Trim/extend tool.

-'"

c: \-

~ /'

Instructions Trim the portions of the elements marked with an arrow.

ModuieNM06 Competency test-LO 2 Editing tools Task: 5

If Trim/extend tool.

JLc Instructions

Extent the three (3) elements to the horizontal line.

ModuleNM06 Competency test-LO 2 Editing tools Task: 6 Break/split tool

/ Instructions Break/Split the line into five (5) segments.

37

i " iI:n

ModuleNM06 -t;16-Competency test-LO 2 8j-Editing tools

Task: 7 Modify/change

~// 11 ~~F ~16 O32

- --ti, '16 =-t024

Wr~ ~ Instructions Change the colour of the dimensions to blue, centre line to green and hatch pattern to yellow.

ModuleNM06 Competency test-LO 2 Editing tools Task: 8

~ !I Modify/change/delete

Ch r

_L b)_ instructions Change chamfer "3" to 3x45 degrees and radius "1" and "2" to 3 units.

ModuleNM06 Competency test-LO 2 Editing tools Task: 9 Modify/change/delete

Instructions Change the spacing and angle of the hatch pattern. spacing = 3, angle = 45

38 NM06CADA


Practical task: Transformation tools

Time 15 mins

Task To demonstrate use of transformation tools.

Resources • CAD system • CAD filets (provided by teacher) • Reference manual.

Procedure 1. Load file specified by teacher. 2. Complete the following activities by using the appropriate editing tools. 3. Save the completed file to disk using the naming convention used in your class. 4. Submit the completed activity to the teacher (eg. floppy disk).


Learning outcome 2 Selects and apply the appropriate transformation tool and method in the construction/modification of 10 basic shapes/profiles:

move _ copy

rotate mirror scale array/duplication (rectangular/polar)


39

ModuleNM06 Competency test-LO 2 Transformation tools Task: I Move

III I I

Instructions Move the window to the right ("X" axis) by 10 units, no change in the "Y" axis.

ModuleNM06 Competency test-LO 2 Transformation tools I Task: 2 Move tool & modidiers

./ "-

~ / "" 0 I I + + detail "A"

Instructions Move detail "A" to the intersection of the line and arc. Ensure that the centre of detail "A" is aligned with the intersection of line and arc.

ModuleNM06 I

Competency test-LO 2 Transformation tools Task: 3

I Rotate tool

I

l~ '-J.-.-I I

+---------- -./

plvotpomt

Instructions Rotate the elongated slot clockwise 30 degrees.

40 NM06CADA



ModuleNM06 Competency test-LO 2 Transformation tools Task: 4 Copy tool

Instrnctions

II I I I

Copy the bole details 25 units along the "X" axis.

ModuleNM06 Competency test - LO 2 Transformation tools Task: 5 Polar duplication/anay

Instructions

x

Duplicate 6 times the detail in the circle using the polar duplication/array tool.

ModuleNM06 Competency test-LO 2 Transformation tools Task: 6 Linear duplication/ana,

00000 00000 0 00000

Instructions Linear duplicate/array the circle. Three (3) rows of five (5) at increments of 10 units.

41

ModuleNM06 Competency test-LO 2 Transformation tools Task: 7

L1 Mirror tool

ESt Instructions Mirror the portion given to complete the shape.

ModuieNM06 Competency test-LO 2 Transformation tools Task: 8 Scale tool

$ $

Instructions

Scale the component shown to 50% of its original size.

42 NM06CADA


Practical task: Producing a drawing

Time 2 hours practical

Task Produce a drawing using CAD tools.

Resources • CAD system • Default CAD file (provided by teacher) • Reference manual

Note: The default I template file shall contain the drawing border and title block and also the settiogs for ASllOO.

Procedure· 1. Plan your approach to do the given drawing of a 'bracket'. 2. Start application. 3. Begin a new file. 4. Use drawing, editiog, transformation tools, drawing aids etc .. 5. Save the completed file to disk using the naming convention used in your

class. 6. Submit the completed activity to the teacher (eg., floppy disk).

Note: Save your work to disk at regular intervals.


Learning outcome 1 Given a CAD system and a default I template file: o initialise a new document o set parameters that may need to be set before commencing the drawing such

as: - the units used - the scale (if applicable) - work space size (if applicable)

Learning outcome 3 Given a CAD system and a default I template file: o produce a drawing to ASllOO standards


43 ii " iI:n

R

150

20 "0 160 .----I I

/. ~ I I

1 I I I I I I I I I I

I I I 1 1

~ I I I :

1 I I I I 1 I I 1 I I I I ,L_~ .. ~ . .J

I

RSO

rRlO • . 6

t: /'

jJj

1

6 HOLES DRll..L 08:d5 DEEP &TAPMIOxl lODBEPEQUALLY SPACBD ON 80 PCD

r-----J ~ ,---------, L, -.-----,-L, 25

1

I. I ~ 200 I .1 MATERIAL

5

L

1 404 :-.. :-:" .---

I I 1 I I 1----r-..

I .... '

\ CAD A ~ Teaching Guide .

Illstructions

-

-

• reproduce the views shown on this drawing

• assign the appropriate line type and colour to the various features

• dimension the views to ASI100

• a default/template file will be provided containing the border, title block and dimensioning variables set to ASI100 standard

• save your work to disk at regular intervals

. I~ -- - -- - -) -I _______ L _______ L_

fl. 130 .1

TAFE COMMISSION S1020 0.18% CARBON S1EEL DRAFTING STANDARD: ASllOO

UNLESS OTHERWISE STATED ALL DIMENSIONS IN MILLIMETRES

DG NOT SCALE

TIllRD ANGLE PROJECTION

DRAWN

C.W.

CKD

DATIl

1013/94

API'!)

CAD I " NM06 LEARNING OUTCOME 3 " BRACKET

SCALE DRAWING I SIZE

.1:2 SAMPLE COMPETENCE TEST" A I p""

Practical task: Modifying CAD drawings

Time 20 minute practical

Task To modify an existing CAD document using appropriate CAD tools.

Resources • CAD system • CAD file/s (provided by teacher) • Reference manual.

Procedure 1. Plan your approach to make the alterations to the given drawing. 2. Start application. 3. Read-in the CAD file. 4. Use drawing, editing, transformation tools, drawing aids etc. to make the

changes. 3. Save the completed file to disk using the naming convention used in your

class. 4. Submit the completed activity to the teacher (eg. floppy disk).



Learning outcome 5 Given a CAD system and a CAD file make the following alterations: o remove features such as chamfers, fillets, holes. o alter sizes of the following features:

-chamfers -fillets -number of holes on a pitch circle diameter -holes I circles -keyways I slots -profiles I shapes

o change hatch pattern Ore-dimension

, NM06CADA TeaChing Guide November 1994

45

20 -+ .v 160 'vv

I I

~ I I I I

I I I I I I I I I

II I I I I

~ I I I I

I I I I

1 I I I I I I I I I I

,L-r ··i ~ /

R

ISO

r RlO , .6 ,/

lWJ

1 +

6 HOLES ORll..L 08d5 DEEP &TAPMIOxl 10 DEEP EQUALLY SPACED ON 80 PCD

MAlERIAL

I~ADA ~ l!~aching?uid-=-_

Instructions

• change the R10 fillet to R20

• change the length of the two slots from 50 units to 40

• there should be eight (8) drilled and tapped holes instead of six (6)

• change the ~50 hole (nominal size) to ~40

• the depth of the 20x5 slot needs to be increased to 10 units

• move the end elevation 20 units along the 'x' axis

• delete the hatch pattern and change the relevant lines from continuous to hidden

1 401 p;;""

5

~r/////////////////4

fl. 130 .1

DRAFI1NG STANDARD: ASllOO S1020 0.18% CARBON STEEL

TAFE COMMISSION


DO NOT SCALE

TIlIRD ANGLE PROJECTION

DRAWN

C.W.

CKD

DAm

1013/94

APID

CAD I " NM06 LEARNING OUTCOME 5 " BRACKET

SCALE DRAWING SIZE

.1:2 SAMPLE COMPETENCE TEST" A p."

Practical task: Producing a hard copy

Time 15 minutes practical

Task To produce a hard copy of a CAD file nominated by the teacher.

Resources • CAD system (including A3 plotter, plotter pen and media). • CAD fIle/s (provided by teacher) • Reference manual • Pen assignment table

Procedure 1. Ensure pens (if applicable) are in correct location. 2. Ensure pens (if applicable) are not dry or clogged. 3. Ensure media (if applicable) is sitting flat and aligned to give equal margin. 4. Initialise output device (ON / reset). 5. Download me. 6. Present plot to teacher, ensuring your name is on the document.


Learning outcome 6 Given a CAD system, a CAD me and pen assignment table (if applicable) plot a the document ensuring that: o appropriate line thicknesses as in AS 11 00 are used. o consistent line thickness (no smears, line skipping etc.) is achieved. o the margin sizes comply to AS1100.


47

Sample competency test B

Learning outcomes 1, 4, 7

Practical task: Basic CAD operations

Time 15 minutes

Task To demonstrate your understanding and skill in basic CAD operations.

Resources • CAD system • sample CAD me (provided by teacher) • reference manual

Procedure 1. Inform teacher you are about to attempt the competency test. Your teacher will

assess you as you perform the activities.

2. Perform the following tasks: -switch the computer system ON (if required) -launch the CAD application -read-in / open the document (your teacher will specify path and me name) -view the document using the following viewing functions:

-zoom in / out / all / window -pan / scroll

-invoke system help on using a drawing tool eg., Line, circle etc. (if available)

3. Describe to the teacher the 'user interface' of the CAD system with regards to: -identifying the graphics area (workspace) -menu structure and tools/functions selection methods -identifying input fields, dialogue boxes, check boxes,scroll bars etc. (if available)

-data input methods -keyboard -mouse -graphic tablet


-single element -multiple elements eg., box/window -entire document

48 NM06 CAD A



Learning outcome 1 D Demonstrate the procedure for system startup (hardware and software). D read-inlopen a document (specified by teacher) into the CAD application. D view a document using the following viewing functions:

-zoom inlout/all -zoom window -pan/scroll

D invoke system HELP (if available). D describe the 'user interface' of the CAD system with regards to:

-identifying the graphics area (workspace) -menu structure and tools/functions selection methods -identifying input fields, dialogue boxes, check boxes,scroll bars etc .. (if

available) -data input methods



-single element -multiple elements ego box/window -entire document

Learning outcome 4 D save the document to a specified drive/directory.

Learning outcome 7 D exit the application using standard procedure D perform the appropriate system shutdown procedure.


49

Practical task: Drawing tools

Time 30 mins.

Task To demonstrate the use of drawing tools and their methods, positional and geometric constraint modifiers and drawing aids.

Resources • CAD system • CAD fIle/s (provided by teacher) • Reference manual

Procedure 1. Load fIle specified by teacher. 2. Complete the following activities by using the appropriate drawing tools,

drawing aids and/or modifiers. 3. Save the completed fIle to disk using the naming convention used in your

class. 4. Submit the completed activity to the teacher (eg. floppy disk) ..


Learning outcome 2 Select and apply the appropriate drawing tool and method in the construction of basic shapes/profIles: o Drawing tools and methods:

• Line • Point • Polygons • Circle • Arcs • Ellipses • Hatch • Text

50 NM06CADA


o Positional and geometric constraint modifiers: • End point • Centre / middle • Intersection / invisible • Distance along / reference to • Point on / attached to • Tangent • Perpendicular • Parallel

o Drawing aids: • Enquiry / get info command • Positional readout • Visual grid • Positional grid • Line constraint

NM06CADA Teachlng Guide November 1994

51

ModuleNM06 ® Competency tesl-L02

Drawing tools Task: I Line 1001

F ®

Instructions Draw a line from the end poinl of line "A" 10 the endpoint of line ''B''. Use positional and geometric modifiers.

ModuleNM06 Competency test -L02 ®o Drawing tools Task: 2 Line tool

~ ® Instructions Draw aline tangent to circle "A" and perpendicular to line ''B''. Use positional and geometric modifiers.

ModuleNM06 Competency test -L02 o@ Drawing tools Task: 3 Line tool

}ZJ CAl

"'" / / "-Instructions Draw a line from invisible intersection "A" to the centre of circle "Bu ,

Use positional and geometric modifiers.

52 NM06CADA


NM06 CAD A T eaclring Guide November 1994


Instructions

®

Draw a line 4 units from the end of line leA" and tangent to arc ''B''. Use positional and geometric modifiers.

ModuleNM06 Competency test -L02 Drawing tools

00 Task: 5 Line tool 0 0

0 0

A 0 0

0 0

® 0

0 ®

Instructions Draw a line through the points shown starting at point "A" and finishing at point ''B''. Use positional modifier.

ModuieNM06 Competency test -L02 Drawing tools Task: 6 Polygon tool

-$-Instructions Draw an octagon circumscribed about a 30 unit circle, with it's centre at the intersection of the two lines. Use the appropriate drawing tool and positional modifiers.

53

ModuleNM06 I Competency test -LOZ

I Drawing tools Task: 7 Polygon tool

, I I

Instructions Draw a hexagon inscribed about a 30 unit circle. with it's centre at the intersection of the line and arc. Use the appropriate drawing tool, and positional modifiers.

ModuleNM06 Competency test -LOZ Drawing tools Task: 8 Point tool

0

0

~"_Pob" ~. anchor point

Instructions Place the following points relative to the anchor point. PI x=30 y= Z5 P2 Distance - 40 An.le - 75

ModuleNM06 Competency test -LOZ Drawing tools Task: 9

I

Circle tool

( 1\ - "'C. LJ

I

Instructions Draw a 30 unit diameter circle with its centre at the intersection of the two elements. Use the appropriate drawing tool. drawing aids and positional modifiers.

54 NM06CADA




jJ /) Instructions Draw a 12 unit radius circle with its centre at the invisible intersection of the two elements. Use the appropriate drawing tool, drawing aids and positional modifiers.

ModuleNM06 Competency test -L02 Drawing tools Task: 11 I

Circle tool I I

DfD 0 0 I

Instructions Draw a circle tangent to the three lines given. Use the appropriate drawing tool. drawing aids and geometric constraint modifiers. What is the diameter of the circle? [ 1

ModuleNM06 Competency test -L02 Drawing tools Task: 12 Arc tool

~ 1 11\~ Instructions Draw an arc that passes through the three intersections. Use the appropriate drawing tool and method, drawing aids and positional modifiers. What is the radius of the arc? [ 1

55

ModuleNM06 Competency test -L02 Drawing tools Task: 13 Arc tool ~

0 '--

instructions Draw a dome of 8 unit radius at both ends oftbe "pin" using the ARC drawing tool. Use the appropriate method and positional modifier.

ModuIeNM06 Competency test -L02 Drawing tools Task: 14 Arc tool

mI _ D I l _ Instructions Draw a 7 unit radius groove using the ARC drawing tool. Use the appropriate method and positional modifier.

ModuIeNM06 Competency test -L02 Drawing tools Task: 15 Ellipse tool

I

~ --- ---

I

Instructions Draw an ellipse with its centre at the intersection of the two lines to the following specifications: [major axis - 50 units] [minor axis - 20 units]

56 NM06CADA




Instructions Apply a horizontal and vertical dimension to the above shape to AS 1100.


~ Instructions Apply a horizontal and vertical dimension to the ahove shape to AS 1100.


.~ 0 0 Instructions Dimension the centre distance between the two holes to ASllOO.

57

ModuleNM06 Competency test -L02

%f Drawing tools Task: 19 Dimensioning-linear

~ 1 ' "", i" T

~~ ~ Instroctions Dimension the component to ASIIOO.

ModuleNM06 Competency test -L02 Drawing tools Task: 20 Dimensioning-datum

Instructions Datum dimension the component to AS!! 00.

ModuieNM06 Competency test -L02 Drawing tools Task: 21 Dimensioning-chain

I I

I"" I "" I ""I I I I I

Instructions Chain dimension the component to ASllOO.

58

I

I



ModuleNM06 Competency test -L02 Drawing tools Task: 22 Dimensioning-angular

\} I'--l ( ~

Instructions Dimension the angular feature of the part to ASIIOO.

ModuleNM06 Competency test -L02 Drawing tools Task: 23 Dimensioning-notes

Instructions Dimension by "notes" the six holes on 80 unit PCD to ASIIOO. [Thread MIOx1.5 10 deep, tap drill !!l8.5]

ModuleNM06 Competency test -L02 Drawing tools Task: 24 Dimensioning-dialcen

Instructions Dimension the inside and outside diameter of the shaft, include a center mark (ASllOO).

59

ModuleNM06 Competency test -L02 Drawing tools

XX Task: 25 Dimensioning-rad/ceo

~ }-. RX

'" RXXJ ,~

- -'--- --

Instructions Dimension the three radii on the shaft to AS 11 00.

ModuleNM06 Competency test -L02 Drawing tools Task: 26 Dimensioning-rad/ceo + ~ LY ~ I

Instructions Dimension the large radii and its centre location to ASllOO.

ModuleNM06 Competency test -L02 Drawing tools Task· 27 Sectioning -

~ -

~ '-

Instructions Apply a hatch pattern to the component. Spacing = 3, Angle = 45

60 NM06CADA


Practical task 2: Editing tools

Time 15 mins

Task To demonstrate the use of editing tools.

Resources • CAD system • CAD fIle/s (provided by teacher) • Reference manual

Procedure 1. Load file specified by teacher. 2. Complete the following activities by using the appropriate editing tools. 3. Save the completed file to disk using the naming convention used in your class. 4. Submit the completed activity to the teacher (eg. floppy disk).


Learning outcome 2 Select and apply the appropriate editing tool and method in the construction/modification of ten basic shapes/proflles: - delete - filletlblend

chamfer trimlextend break/split

_ modify!change

NM06CADA Teachlng Guide November 1994

61 i,'@:n

ModuleNM06 Competency test-LO 2 R5 R5 Editing tools Task: 1 Fillet/blend tool

1/ R5 Rl

/

8_ f ~R2 RlO_ - --

Instructions Apply the fIiletslblends on each corner of the shape as specified by the "R" value.

ModuieNM06 Competency test-LO 2 Editing tools Task: 2 Filletlblend tool

Instructions Apply a 5 unit blend at the intersection of the two circles.

ModuleNM06 Competency test-LO 2

2x45° Editing tools 2x45° Task: 3 / Chamfer tool

8 4X4! - -

Instructions Apply the chamfers on each comer as specified.

62

5 x 15°

/

'2X450

--



ModuleNM06 Competency test-LO 2 Editing tools Task: 4 Trim/extend tool.

Instructions Trim. the portions of the circles to produce the preview window.

ModuleNM06 Competency test-LO 2 Editing tools Task: 5 Trim/extend tool.

Instructions Extent all the arcs to meet line tt A".

ModuleNM06 Competency test-LO 2 Editing tools Task: 6 Break/split tool

!\ Instructions Break/Split the arc into five (5) segments.

63

A

;

:

ModuleNM06 T77----Competency test-LO 2 ,//j/1 Editing tools '/j

r Task:? ' <

Modify/change ' /1 I .... -,._, : I I

m Wp~---:- ' I I -----,------t-t--,,/:1. -l- i , I I I I I ,], ,k , I I

-'-','-1 1- L '" i ~.t ~l~=:_;J;_L '///. '/ /.AI

~:%:: , ~~~:2L Instructions Change the colour of the dimensions to blue, centre line to green and hatch pattern to yellow.

ModuieNM06 Competency test-LO 2

~ Editing tools Task: 8 Modifylchange/delete

-( ,

-1 , ,

@/ -" , ,--

Instructions 1. Delete the hatch pattern. 2.Cbange the appropriate continuous lines to hidden line type. 3.Replace the chamfer with a 3 nult radius.

ModuieNM06 Competency test-LO 2 Editing tools Task: 9 Modify/change/delete

Instructions Change the hatch spacing and angle: spacing = 3, angle = 45

64 NM06 CAD A


Practical task: Transformation tools

Time 15 mins

Task To demonstrate use of transfonnation tools.

Resources • CAD system • CAD fUels (provided by teacher) • Reference manual.

Procedure 1. Load fUe specified by teacher. 2. Complete the following activities by using the appropriate editing tools. 3. Save the completed fUe to disk using the naming convention used in your class. 4. Submit the completed activity to the teacher (eg. floppy disk).


Learning outcome 2 Selects and apply the appropriate transfonnation tool and method in the construction/modification of 10 basic shapes/profUes:

move copy rotate mirror scale array/duplication (rectangular/polar)


65 it1i1:n

ModuieNM06 Competency test-LO 2 Transformation tools

~ Task: 1 Move

~ ~

Instructions Move the window to the rigbt ("X" axis) by 10 units, no cbange in the "Y" axis.

ModuieNM06

W Competency test-LO 2 I detail "A" Transformation tools Task: 2 I 0 ~ Move tool & modidiers

I , I ,

r , I

~ ~-- ------- - - - - - -, Instructions Move detail" A" so that its lower left hand comer aligns with the intersection of the two lines.

ModuleNM06 ~ Competency test-LO 2 I/cb Transformation tools Task: 3 Rotate tool

I

1/ I I \ I ~ ~-----~-I

+----- PiVo~ Instructions Rotate the elongated slot clockwise 45 degrees.

66 NM06CADA



ModuleNM06 Competency test-LO 2 Transformation tools Task: 4 Copy tool

I

r ' t ' ) l,~,1 I,~,j

L:-_ ~ _-:_~ [ I

' 1

I

Instructions Copy / Linear duplicate the hole details 25 units along the "X" axis.

ModuieNM06 Competency test-LO 2 Transformation tools Task: 5 Polar duplication/array

Instructions

g o

Duplicate 12 times the detail in the circle using the polar duplication/array tool.

ModuieNM06 Competency test - LO 2 Transformation tools Task: 6 Linear duplication/array

0000000000 0000000000 0000000000

0 0000000000 0000000000

Instructions Linear duplicate/array the square. Five (5) rows and ten (10) columns at increments of 7 units.

67

ModuleNM06 Competency test-LO 2

\ Transformation tools Task: 7 Mirror tool I

- -

I

I Instructions Mirror the portion given to complete the shape.

ModuleNM06 Competency test-LO 2 Transformation tools Task: 8 Scale tool

Instructions

--

Scale the component shown to 50% of its original size.

68 NM06CADA


Practical task: Producing a drawing

Time 2 hours practical

Task Produce a drawing using CAD tools.

Resources • CAD system • Default CAD me (provided by teacher) • Reference manual

Note: The default / template me shall contain the drawing border and title block and also the settings for AS 1100.

Procedure 1. Plan your approach to do the given drawing of a 'bracket'. 2. Start application. 3. Begin a new me. 4. Use drawing, editing, transformation tools, drawing aids etc. 5. Save the completed me to disk using the naming convention used in your

class. 6. Submit the completed activity to the teacher (eg., floppy disk).



Learning outcome 1 Given a CAD system and a default / template me: D initialise a new document D set parameters that may need to be set before commencing the drawing such

as: - the units used - the scale (if applicable) - work space size (if applicable)

Learning outcome 3 Given a CAD system and a default / template me: D produce a drawing to AS 11 00 standards

NM06CADA Teaching Guide NOVember 1994

69

R20

60

120

40 Lilt

L-100---J 40

:- _1_ -:, 1----1

R40

R20

I I

100 MA1llR1AL

8 HOLES DRD..LED 0 8 X 15 DBEP &TAPMIOXl 10 DBEP EQUALLY SPACED ON 6S PCD

I CAD AI""', I Teaching Guide i ~

Instructions

• reproduce the views shown on this drawing

• assign the appropriate line type and colour to the various features

• dimension the views to ASllOO

• a default/template file will be provided containing the border, title block and dimensioning variables set to ASll00 standard

• save your work to disk at regUlar intervals

DRAFTING STANDARD: ASllOO S1020 0,18% CARBON STEEL

TAFE COMMISSION


DO NOT SCALE

THIRD ANGLE PROJECTION

DRAWN

C,W,

CKD

DATI!

1013/94

AFro

CAD I " NM06 LEARNING OUTCOME 3" BRACKET

-SCAlE DRAWING ---.... _---- '--- I SIZE

1:2 SAMPLE COMPETENCE TEST" B I A3

Practical task: Modifying CAD drawings

Time 20 minute practical

Task To modify an existing CAD document using appropriate CAD tools.

Resources • CAD system • CAD fIle/s (provided by teacher) • Reference manual.

Procedure 1. Plan your approach to make the alterations to the given drawing. 2. Start application. 3. Read-in the CAD file. 4. Use drawing, editing, transformation tools, drawing aids etc. to make the

changes. 3. Save the completed file to disk using the naming convention used in your class. 4. Submit the completed activity to the teacher (eg., floppy disk).



Learning outcome 5 Given a CAD system and a CAD fIle make the following alterations: o remove features such as chamfers, fillets, holes. o alter sizes of the following features:

-chamfers -fillets -number of holes on a pitch circle diameter -holes I circles -keyways I slots -profiles I shapes

o change hatch pattern Ore-dimension


71

120

R20

60

4o.Lllt 20 , 40

R40

Lloo-J <110.13

:40.00

020

1- - ~ - _I, 1---1

r#~~rJ.-~~rl , t I I

100

MA1EUAL

I CAD A l~~'\ I Teaching Guide iI

Instructions

• change the R20 fillet to RIO

• change the width of the two slots from 12 and 20 units to 10 and 18 respectively

• there should be six (6) holes on teh fIWlge instend of eight (8)

• remove the j2150 x 5 deep counterbore

• the depth of the 20 x 5 slot needs to be increased to 6 units

• save your work to disk at regular intervals

8 HOLES DRILLED 0 8 X 15 DEEP &TAPMlOX I 10 DBEP EQUALLY SPACED ON 65 PCD

S1020 0.18% CARBON SlEEL TAFE COMMISSION

DRAFTING STANDARD: ASllOO


DO NOT SCALE

TIllRD ANGLE PROJECTION

DRAWN

C.W.

DATIl

1013/94

ICKD IAPID I

CAD I - NM06 LEARNING OUTCOME 5 - BRACKET

'CAUl DRAWING SIZE

1:2 SAMPLE COMPETENCE TEST - B A3

Practical task: Producing a hard copy

Time 15 minutes practical

Task To produce a hard copy of a CAD file nominated by the teacher.

Resources • CAD system (including A3 plotter, plotter pen and media). • CAD file/s (provided by teacher) • Reference manual • Pen assignment table

Procedure 1. Ensure pens (if applicable) are in correct location. 2. Ensure pens (if applicable) are not dry or clogged. 3. Ensure media (if applicable) is sitting flat and aligned to give equal margin. 4. Initialise output device (ON I reset). 5. Download me. 6. Present plot to teacher, enSuring your name is on the document.


Learning outcome 5 Given a CAD system, a CAD file and pen assignment table (if applicable) plot a the document ensuring that: o appropriate line thicknesses as in ASllOO are used. o consistent line thickness (no smears, line skipping etc.) is achieved. o the margin sizes comply to ASllOO.


73

MODULE SECTIONS

Section 1: The CAD system

SUGGES1ED PURPOSE DURATION

3 hours To develop students' skills in basic operating procedures for using a CAD system.

This section covers learning outcomes 1, 4 and 7 of the National Module Descriptor.

Objectives

At the end of this section successful students will be able to:

D perform basic operations using the CAD system: • system startup (hardware) • launch the application • read-in a document(specified by teacher) • view a document (zoomlwindow/allIprevious, pan/scroll) • invoke system HELP • save the document under a different name • plot a document (specified & preset by teacher) • exit the application • system shut down

D demonstrate the use of the following CAD software elements:


• tool/function selection methods • input fields, dialogue boxes, check boxes,scroll bars etc .. • data input methods • undo/redo facility (if available) • methods for object (entity) selection.

75

Section 2: Drawing tools

SUGGESTED PURPOSE

DURATION

5 hours To develop students' skills in using the drawing tools in conjunction with drawing aids and positional and geometric modifiers to construct shapes/profJles as well as dimensioning and sectioning.

This section covers learning outcomes 2 and 5 of the National Module Descriptor.

Objectives


Select and apply the following tools in combination with drawing aids and/or modifiers (positional and geometric) in the construction of basic shapes/profJles:

D demonstrate the use of the following drawing tools and their methods: • Line • Point • Polygons • Circle • Arcs • Ellipses • Hatch • Text

D demonstrate the use of the following positional and geometric constraint modifiers: • End point • Centre I middle • Intersection I invisible • Distance along I reference to • Point on I attached to • Tangent • Perpendicular • Parallel

D demonstrate the use of the following drawing aids: • Enquiry I get info command • Positional readout • Visual grid • Positional grid • Line constraint

76 NM06CADA


Section 3: Editing tools

SUGGESTED PURPOSE

DURATION

3 hrs To develop students' skills in applying editing tools for the construction of shapes/proftles.

This section covers learning outcomes 2 and 5 of the National Module Descriptor.

Objectives


D select and apply the following editing tools in the construction of basic shapes/profiles:


• delete • filletlblend • chamfer • trimlextend • break/split • modify/change.

77

Section 4: Transformation tools

SUGGESTED PURPOSE DURATION

3 hrs To develop students' skills in applying transformation tools the construction of shapes/profIles.

This section covers learning outcome 2 and 5 of the National Module Descriptor.

Objectives


D select and apply the following transformation tools in the construction of basic shapes/profIles: • move • copy • rotate • mirror • scale • array/duplication (rectangular/polar).

78 NM06 CAD A


Section 5: Producing a drawing


3 hrs To develop students' knowledge and skills in applying 'CAD tools' for the efficient production of drawings to ASllOO.

This section covers learning outcome 1 and learning outcome 3 of the National Module Descriptor.

Objectives


o identify drafting standards used when producing documents using CAD

o initialise/create a new document to appropriate standards (ASllOO)

o state one reason for using default (preset) documents when starting a new drawing

o describe the procedure for setting parameters that may need to be set before commencing a drawing such as: • the units used • the scale (if applicable) • work space size (if applicable)

o describe the scaling method employed by your CAD system in relation to fitting the objects drawn to standard drawing sheets

o describe the use of library items

o describe the use of colour in CAD documents

o describe the use of layers in CAD systems

o select different line types

o demonstrate the procedure for 'shifting the zero point (origin)' to a new location

o describe an efficient procedure for the production of a shape given the available 'CAD tools'

o produce a drawing to comply with ASllOO.


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Section 6: Modifying CAD drawings


2 hrs To develop students' knowledge and skills in making alterations to existing CAD documents using CAD tools.

This section covers learning outcome 2 and 5 of the National Module Descriptor.

Objectives


o open an existing CAD fIle from a nominated location

o select and apply the appropriate CAD tool/s and methods in the modification of a CAD fIle

o save the fIle to a nominated location.

80 NM06 CAD A


Section 7: Producing a hard copy

SUGGESTED PURPOSE

DURATION

3 hrs To develop students' knowledge and skills in using plotters and other output devices to produce 'hard copy' of a CAD document to acceptable standards.

This section covers learning outcome 6 of the National Module Descriptor.

Objectives


D ready the plotter for plotting a me with regards to: • initialise plotter • loadingllocating media • pen assigument • pen condition

D plot a CAD document ensuring:


• appropriate line thickness as in ASllOO • consistent line thickness (no smears, line skipping etc .. ) • margin sizes as per ASllOO.

81

ANSWERS TO REVIEW QUESTIONS

Section 1

1. • switch the monitor/display' on'

• switch the computer 'on'

• log-on the system (Unix / networked system)

• select the application from a utility menu or 'point and click' to the appropriate 'icon'.

2. • select the open command from the me menu

• using the dialog box, select the directory and me name

• select the 'OK' button.

3. • ZOOM ALUFULL, select the function from the VIEW menu.

• ZOOM WINDOW, select function from the view menu and pick two points on screen

• ZOOM percent, select function from the view menu and type-in the magnification level.

• PAN/SCROlL, select function from VIEW menu, pick initial point then new location.

• ZOOM PREVIOUS/IAST, select function.

4. • place pointer over function and press ALT-H

• select help option from menu bar, then select topic from index.


83

5.

6.

TO PA

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KENUBAR

ruhIXJWN= ., '-- sJ=

WORKSPACE

+=OR 1~ PROMPTAND INPUT AREA

7. • single element -place cursor on element and press the left mouse button.

• multiple elements -window-in all objects or as above and hold the shift key down.

• entire document -use' select all' function or above method

8. The 'UNDO' button available all the time (one level of undo)

9. • save current work

• quit the application ie., select the QUIT function from the FILE MENU.

• select SHUT DOWN option from the menu bar at the system software level.

• switch the power OFF (optional)

84 NM06CADA


10. • select the SA VB command from the FILE menu.

• use the dialogue box drop down list to select the path to which you want to save.

• type-in the file name at the file input field

• click on the OK button.

Section 2

1. • line, point, arc, circle, polygon, ellipse, dimension, hatch.

2. a) the LINE tool, relative / incrementally defmed lines.

b) the circle tool, specify centre location and radius or diameter.

c) the ellipse tool, specify centre location, then specify major and minor values.

d) the polygon tool, specify centre location then sides and radius value.

3. Describe the use of the following 'positional modifiers':

• Endpoint-ensures new elements being draw or existing elements are precisely attached to the endpoints of existing elements.

• Centre/middle-ensures precise location ie., centre / midpoint of elements new and existing eg., circles, arcs, lines etc ..

• Intersection-allows quick and easy placement of elements at intersection of two elements.

• invisible intersection -as above, however the elements do not visually intersect.

• distance along -allows the placement at a distance along an existing element.


85

4. • Tangent -ensures tangential placement of elements such as lines, arcs, circle

• Perpendicular -forces a line perpendicular to existing elements ie., lines or arcs.

• Parallel -forces new elements to be parallel to existing elements eg., lines, arcs, circles polygons etc ..

5. -use the intersection modifier when prompted for the centre location of the circle.

6. • line constraint, invoked by holding down the shift key as you draw the line.

• the 'GRID' function provides quick placement of elements using a grid of specified increment

7. • the INFO' command provides a means of interrogating the elements on screen.

Section 3

1. • fillet -select the function

-specify the radius value

point and click at the intersection of the two elements.

• chamfer -select the function

-specify the value, eg., parallel distance and angle

point and click at the intersection of the two elements.

• trim -select the function

-select element ends to trim.

• extend -select function/tool.

-select element to extend and drag to boundary edges.

86 NM06 CAD A


2. • select chamfer/fillet tool • specify values ie., distance and angle / radius. • select the intersections.

3. • the diameter of a circle

Use the 'get info' function as it provides a means of interrogating and altering values of existing elements

• the length of an line and it's angle.

A1; above.

Section 4

1. • the 'Move' function in combination with positional modifiers.

2. a) -use the Rotate function -select objects to rotate -select function -specify rotation angle

b) -use COpy command -select object -select command -select reference point -select new location (relative)

c) -use Polar Duplication command -select object to duplicate -select function -specify:

-pivot point -number required -rotate each copy

d) -use Rectangular Duplication command -select object to duplicate -select function -specify vertical and horizontal incremental distances -specify number required.


87 ", it:n

e) -use Mirror function -select objects to mirror -select function -specify mirror line -repeat to complete object

f) -use the Scale function -select object to scale -select function -specify scale factor in "x" and "Y" axis.

g) -use Move function -select object -select function -specify reference point of object to move. -specify new location using positional modifier.

Section 5

1. • Starting a new document with pre-deflned parameters or' standard settings' saves a time.

2. • Depending on the CAD system. You may need to set the scale factor between drawing units and actual units. Workspace size may need to be set in terms of paper size also.

3. Possible methods ...

• From the start the scale factor is worked out and the rulers are set to allow the drawing to be produced on a standard drawing sheet

• Other systems allow you to scale the 'view' not the database when composing a drawing for plotting.

4 • 'Library' items are frequently used symbols such as fasteners, welding symbols, hydraulic symbols, architectural elements eg., windows, doors etc .. We do not draw anything twice in CAD we use these symbols to speed-up the production of drawings and aid in the consistent representation of these items.

88 NM06CADA


5. • Most CAD systems use colour to allocate line types 10 plotter pen numbers. Also some CAD systems can't display different line thicknesses and use colour instead. However colour is also used to highlight features on the (electronic) drawing.

6. • Layers allow the CAD operator to separate design functions such as electrical, plumbing, levels in buildings etc .. Layers can be manipulated ie., they can be hidden with the benefit of unclutering the screen or speed up the 'viewing' process. There are standards in layering and the operator needs to adhere to those standards.

7. The methods vary depending with the CAD system: • The operator may select a different line type using the 'command' line or

use the pull down menus.

• A floating line pallet may be available and the user selects the line type without 'hunting' for the item.

8. • Draw half the portion of the bush using the line tool and drawing aids/modifiers.

• Mirror the half portion to complete the bush.

• Apply the hatch function/tool.

• Dimension the part.

Section 6

1. a) Delete existing fillet and redefine with new value.

b) Change the size of a chamfer from 5 x 45 to 10 x 45.

c) As above.

c) Use the delete and extend commands. Delete the chamfer element and use the extend function to join the two elements.

d) Use the Delete and Polar Duplication command. First delete all but one hole, then use the Polar duplication command to redefme the new number of elements.

e) Use the Move command and specify an incremental/relative move of 'x' 10 'y' O.

f) • select object to change • select the line type from the floating tool pallet.


89

Section 7

1. a) -Laser printer/plotter

b) -inkjet plotters, electrostatic plotters

2. • Vector based devices draw the elements by 'pushing' the 'pen' from point to point producing a continuous element. Raster devices produce elements by using 'small' dots to derme it.

3. By colour, each line type is assigned a colour and each colour is assigned to a specific pen number on the plotter.

4. • Is the plotter switched' on' ?

• Is the plotter connected ?

• Was the appropriate device driver selected?

• What 'error' messages are displayed on the plotter and screen?

5. • the pen assigument table simply provides the listing of plotter pen number

6. •

•

•

•

7. a)

b)

c)

d)

to pen thickness

switch plotter 'on'.

check location and condition of pens or load the pens

load media, ensure alignment and flatness

invoke command from software.

Clogged pen

media not aligned properly.

wrong pen size.

poor flow of ink, clogged pen.

90 NM06CADA


STUDENT RESULTS: NM06

LEARNING OUTCOME I LEARNING OUTCOME 2 LEARNING OUTCOME 3 LEARNING OUTCOME 4 LEARNING OUTCOME 5 FINAL RESULT

NAME Theory Practical T71eory Practical T7leory Practical T1Jeory Practical T11eory Practical

1st I 2nd 1st I 2nd 1st I 2nd 1st I 2nd 1st I 2nd 1st I 2nd 1st I 2,ui 1st I 2nd 1st I 2nd 1st I 2nd PIF

Note: Record P, I or F at each attempt for every learning outcome. For fmal result, record only P or F. INM06 CAD A ~ I Teaching Guide ..

STUDENT RESULTS: NM06

LEARNING OUTCOME 6 LEARNING OUTCOME 7

NAME Theory Practical 17leory Practical

lsI I 2nd lsI I 2nd 1st I 2nd 1st 1 2nd I I

Note: Record P, I or F at each attempt for every learning outcome. For final result, record only P or F.

I

FINAL I RESULT

I I I PIF

r NM06 CAD A ~ Teaching Guide

Documents

NSW Module Resource Manual for the National Metal and