surface model
3-D model defined by surfaces. The surface consists of polygons.
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Glossary Terms
surface texture
Repetitive or random deviations from the nominal surface, which form 3-D topography of the surface. See flows; lay; roughness; waviness.
swarf
Metal fines and grinding wheel particles generated during grinding.
Swiss-type machine tool
Type of turning center designed to turn small, complex, precision parts. It has an automatic lathe that has a sliding headstock and a guide…
synchronous transfer
Part-transfer system in which all parts are progressively moved to the next workstation or tooling station at the same time.
synthetic cutting fluid
Water-based chemical solution that contains no oil. Normally contains additives that improve lubricity and prevent corrosion and rancidity.…
tailstock drill and tapholder
Accessory that mounts in a turning machine’s tailstock for center-drilling chucked work and tapping. See chuck.
tang
Extended flat portion of tapered drill shank, endmill or other tool that allows maximum power transmission and proper positioning of the to…
tap
Cylindrical tool that cuts internal threads and has flutes to remove chips and carry tapping fluid to the point of cut. Normally used on a …
taper reamer
Reamer designed to produce a reamed hole with a specified taper. Principles of standard reamers apply. See reamer.
taper-turning attachment
Guide to which a cross slide is attached that permits the turning of tapers without disturbing the alignment of the tailstock. Also permits…
tapping
Machining operation in which a tap, with teeth on its periphery, cuts internal threads in a predrilled hole having a smaller diameter than …