BRX 120 Unit One Lecture Guide Terms

Name ___________________ Date _____________ Introduction: As you read this text, you will encounter various terms associated with machinery. It will be very helpful to the reader to have a basic understanding of these terms to further their ability to read and interpret blueprints. The terms used in this introductory chapter have been divided into categories to help you remember them better. Keep in mind, some terms may fit in more than one category. From time to time it will be necessary to refer back to this unit. Terms Associated with machining processes Allowance Face Bore Fixture Broach Jig Burnish Lap Chamfer Neck Clearance hole Ream Counter bore Spot face Countersink Template Extrusion Undercut Face Upset Terms associated with machine tooling Abrasive Alloy Arbor Die Tap Terms associated with metal Characteristics Anneal Heat treatment Carburize Nonferrous Case hardening Normalizing Ferrous Pickle Flame hardening Quenching Forge Surface roughness Hardness test Temper Terms associated with technical drawings Angular Dimension Isometric drawing Unilateral Assembly drawing Least material condition Vertical Auxiliary view Limits Typical Axis Linear dimension Baseline dimensioning Maximum material condition Basic dimension Nominal size Basic size Oblique surface Bolt circle Orthographic projection Bilateral Horizontal Cad drawing Parallel Chain dimensioning Perpendicular Coaxiality Profile view Concentricity Reference dimension Datum Scale Degree Section Detail drawing Symmetrical Eccentric Tabular dimensioning Finish marks Tangent Gauge Tolerance

Geometric tolerancing Total tolerance Terms associated with machine parts, shapes, and miscellaneous Bevel Keyway Blind hole Pad Boss Pattern Burr Pinion Bushing Pitch Cam Radius Casting Reciprocation Collar Relief Core Rib Die casting Round Draft Serrated Fastener Shim Fillet Shoulder Fin Spline Flange Springs Gusset Stud Hub Taper Inclined surface Triangle Included angle Vellum Key Woodruff key Key seat Alphabet of Lines Visible line Dimension lines Short break line Hidden line Extension line Long break line Section lines Leader Phantom line Center lines Cutting Plane line Chain line

Review Questions 1. Give the name of a machining operation where the size of a hole is enlarged. 2. The term that refers to half a diameter. 3. A machining operation where solids are forced through a die to take a new shape. 4. A machine device that can produce a linear force when compressed or stretched. 5. The term that refers to multiple diameters that share the same axis. 6. A thin piece of metal placed between two objects to adjust alignment. 7. Parts the uniformly change in diameter. 8. The amount of deviation from a desired limit. 9. A process that softens metal. 10. A device that would help hold machine parts together.