Scleroscope hardness number (HSc or HSd)
Number related to the height of rebound of a diamond-tipped hammer dropped on the material to be tested. Hardness measured on the Model C S…
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Glossary Terms
Latest Glossary Terms
Scleroscope hardness test
Dynamic hardness test using a calibrated instrument that drops a diamond-tipped hammer from a fixed height onto the surface of the material…
semisynthetic cutting fluid
Water-based chemical solution that contains some oil. See synthetic cutting fluid.
sensitizing heat-treatment
Heat-treatment, whether accidental, intentional or incidental (as during welding), that causes precipitation of constituents at grain bound…
servocontrol
Refers to control of motion. Applied to the industrial robot, it describes automatic feedback, or “closed-loop,” operation in which sensing…
servomechanism
Control mechanism in a machine tool to feed the cutting tool into the part and slow or speed up the drive motors as required.
shank
Main body of a tool; the portion of a drill or similar end-held tool that fits into a collet, chuck or similar mounting device.
shaper tool
Single-point tool that traverses the workpiece in a reciprocating fashion to machine a desired shape.
slotting machine (shaper)
Vertical or horizontal machine that accommodates single-point, reciprocating cutting tools to shape or slot a workpiece. Normally used for …
shaping
Using a shaper primarily to produce flat surfaces in horizontal, vertical or angular planes. It can also include the machining of curved su…
shear lip
Narrow, slanting ridge along the edge of a fracture surface. Term sometimes also denotes a narrow, often crescent-shaped, fibrous region at…
shear plane
Plane along which the chip parts from the workpiece. In orthogonal cutting, most of the energy is used to create the shear plane.
