Glossary Terms

Hand-feeding a workpiece into a bench grinder. Usually utilized in the shop to resharpen tools. Attachments or other mechanical devices are required for increased efficiency and accuracy. See grinding.

Concentrated shear action at the point of cut that results in the formation of a continuous chip. See shear plane.

Dimension that defines the exterior diameter of a cylindrical or round part. See ID, inner diameter.

Deviation from nominal path caused by momentum carried over from previous step, as when a tool is rapidly traversed a considerable distance to begin a cut. Usually applies to CNC machining and is prevented if the control has the appropriate look-ahead capability. See look-ahead; undershoot.

Strip or block of precision-ground stock used to elevate a workpiece, while keeping it parallel to the worktable, to prevent cutter/table contact.

Model features can be driven by rules or parameters set up by the user. They can be dimensions, geometric constraints (tangent, concentric, co-linear, etc.), equations and design tables, among others.

Designing the assembly machine, feeding mechanism and the part itself so the parts to be assembled are properly aligned prior to and during the assembly operation.

When used in lathe or screw-machine operations, this process separates a completed part from chuck-held or collet-fed stock by means of a very narrow, flat-end cutting, or parting, tool.

Mechanism that delivers parts to the assembly machine at a specified rate and with proper orientation.

Maximum load that the robot can handle safely.

Lamellar aggregate of ferrite and cementite in slowly cooled iron-carbon alloys occurring normally as a principle constituent of steel and cast iron. Fully annealed steel containing 0.85 percent carbon consists entirely of pearlite.

Mechanical working of a metal by hammer blows or shot impingement.