offhand grinding
Hand-feeding a workpiece into a bench grinder. Usually utilized in the shop to resharpen tools. Attachments or other mechanical devices are…
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Glossary Terms
orthogonal chip formation
Concentrated shear action at the point of cut that results in the formation of a continuous chip. See shear plane.
overshoot
Deviation from nominal path caused by momentum carried over from previous step, as when a tool is rapidly traversed a considerable distance…
parallel
Strip or block of precision-ground stock used to elevate a workpiece, while keeping it parallel to the worktable, to prevent cutter/table c…
part orientation
Designing the assembly machine, feeding mechanism and the part itself so the parts to be assembled are properly aligned prior to and during…
parting
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 v…
parts feeder
Mechanism that delivers parts to the assembly machine at a specified rate and with proper orientation.
payload (workload)
Maximum load that the robot can handle safely.
polycrystalline cubic boron nitride (PCBN)
Cutting tool material consisting of polycrystalline cubic boron nitride with a metallic or ceramic binder. PCBN is available either as a ti…
polycrystalline diamond (PCD)
Cutting tool material consisting of natural or synthetic diamond crystals bonded together under high pressure at elevated temperatures. PCD…
pearlite
Lamellar aggregate of ferrite and cementite in slowly cooled iron-carbon alloys occurring normally as a principle constituent of steel and …
peening
Mechanical working of a metal by hammer blows or shot impingement.