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       CODE: 603.280-022 Buy the DOT:Download/CD-ROM
TITLE(s): GRINDER SET-UP OPERATOR, INTERNAL (machine shop) alternate titles: grinder, hand;
inner-diameter grinder, tool; internal grinder, tool; internal-grinding-machine hand;
internal-grinding-machine operator; precision grinder
Sets up and operates internal grinding machines to grind internal cylindrical and tapered surfaces
of rotating metal workpieces, such as tool, die, and machine parts, usually for limited runs,
analyzing blueprints and specifications and selecting tooling according to knowledge of internal
grinding procedures: Studies blueprint or layout on workpiece to visualize grinding to be done and
plans sequence of operations. Selects grinding wheel, according to knowledge of metal properties and
abrasives, and mounts wheel on spindle. Moves controls and reads dial to set angle of workpiece to
grinding wheel, following product specifications. Dresses wheel manually or with preset device.
Positions and secures workpiece on faceplate, magnetic chuck, or in chuck jaws, using wrenches.
Selects and sets grinding wheel speed, work surface speed, and workpiece table travel rate,
according to knowledge of metal properties and abrasives. Positions and tightens stops to set depth
of grinding wheel cut and stroke of workpiece table. Moves controls to feed wheel to workpiece
manually and automatically. Turns valve handle and directs flow of coolant against wheel and
workpiece. Verifies dimensions of ground workpiece for conformance to specifications, using such
measuring instruments as micrometers, dial indicators, and gauge blocks. May dress grinding wheel to
specified profile for contour grinding, using special fixtures and tools. May grind nonmetallic
materials, such as plastics. May operate tracer attachment to duplicate contours from templates or
models. May be required to have experience with particular material, product, or precision level, or
with machine of particular type or trade name.
GOE: 06.01.03 STRENGTH: M GED: R4 M3 L3 SVP: 7 DLU: 78
ONET CROSSWALK: 89111 Tool Grinders, Filers, Sharpeners, and Other Precision Grinders
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