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WELCOME

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General Manufacturing

Metal Removing( Machining) Metal Joining ( Welding, Brazing

and Soldering) Metal Forming & Casting

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Machining Processes

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Turning, Drilling and Milling

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Turning, Drilling and Milling related Operations

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Lathe

Lathe is a machine tool which is power operated and removes metal in the form of chip.

Basic MotionsWork-Piece – Rotation.Cutting Tool – Linear Movement.

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Mini Lathe

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LATHE

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Lathe Terminology

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Lathe – Safety Aspects

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Single Point Cutting Tool

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Tool Blanks

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Cutting Tool Angles (Single Point)

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Some Cutting Tools

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Cutting Parameters

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Cutting Speed(v)

This is the speed at which work-piece travels against the tool’s Cutting edge.

Formula to find out this is “ V=DN”Where

V – Cutting Speed in “mm/min”.D - Diameter of the work-piece in “mm”.N - Rotation of the spindle in “rpm”.rpm – Rotations per minute.

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Feed(f)

Feed is the distance traveled by the tool cutting edge into the work-piece during one rotation of the work-piece in the longitudinal direction( Parallel to the lathe axis).

It is in “mm/revolution”

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Depth of Cut(d)

Depth of Cut is the amount of penetration of the tool tip into the Work-piece in the transverse( Perpendicular to the lathe axis) direction.

It is in “ mm”

“d” can be more for rough turning,( 2 to 4mm) “d” should be very less for the finish turning

( .25 to 1mm)

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Work Holding Devices

3- Jaw Chuck 4- Jaw ChuckMagnetic Chuck centers Collets Chuck Face Plate Angle Plate Dogs Steady Rest Follower Rest

Etc…

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3-Jaw Chuck

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4 - Jaw Chuck

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Centering Cylindrical Job in a 4- Jaw Chuck

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Jaw Position

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Live Center

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Collets Chuck

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Arbor and Chuck

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Steady Rest

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Follower Rest

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Face Plate (Checking the Run-Out)

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Steps of Operations for the Given Job

Job Setting Tool Setting Facing Center Drilling Rough Turning Finish Turning Checking the Dimensions

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Tool Setting

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Facing Operation

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Continues…

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Continues…

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Center Drills

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Drilling at Lathe

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Boring On a Lathe

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Turning Operation

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Continues…

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Shoulder Flattening

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Parting Tools

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Parting Tool

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Parting Process

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Continues…

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Non- Cylindrical Object Turning

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Continues…

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SHAPER

Shaper is a Machine Tool which is power operated and removes the metal in the form of chip with the Cutting tool attached to a reciprocating ram.

Basic Motions areWork piece – Stationary

Cutting Tool – Reciprocating.

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Shaper 1

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Shaper 2

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Use of Quick Return Mechanism

Quick Return Mechanism in shaper reduces the un-Productive time by speeding up the return stroke.

Forward Stroke – Cutting takes place Return Stroke - Un-productive

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Shaper – Quick Return Mechanism

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Hydraulic Shaper

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Dial Indicator

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Lathe Bed(Flat) and Tail Stock

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Behind Apron

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Cross Slide

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Compound Rest

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Swivel Plate

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Tool Post

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Lead Screw and Power Feed

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Half Nut and Engaging Leaver

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Gears at the Head-Stock

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Tail-Stock