- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who tends one or more previously set up gear-cutting machines, such as gear shapers, hobbers, finishers, and generators, to machine spline or gear teeth on metal blanks. Respnsibilities include:
* Positions and secures workpiece on arbor, or in chuck, fixture, or automatic feeding mechanism.
* Starts machine and flow of coolant and observes operation.
* Adjusts machine stops and changes worn cutter, using wrenches.
* Verifies conformance to specifications, using fixed gauges, micrometers, and preset dial indicators.
* May machine plastics or other nonmetallic materials.
* May be required to have experience with particular material, product, or size, type, or trade name of machine.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in grinding metal objects to specifications, applying knowledge of metal properties, abrasives, and grinding procedures.
* May set up machines.
* May train new workers.
* Performs duties described under supervisor master title.
Industry:Professional careers
A professional who supervises and coordinates activities of workers engaged in filing, burring, tumbling, sandblasting, and polishing small arms, such as rifles and machine guns.
* Performs duties as described under supervisor master title.
Industry:Professional careers
A professional who sets up and operates thread-grinding machine to grind internal or external threads on metal objects, such as worm gears and leadscrews, on custom basis, analyzing specifications and selecting tooling according to knowledge of thread grinding procedures. Respnsibilities include:
* Studies blueprint to visualize grinding to be done and plans sequence of operations.
* Selects and computes machine settings, such as positioning angles, rotation speeds, feed rates, and gear ratios, using knowledge of shop mathematics.
* Selects grinding wheel, gears, and cams, using knowledge of thread types, metal properties, and abrasives, and installs them, using wrenches.
* Positions and secures workpiece between centers or in chuck jaws.
* Sets trip stops along calibrated rack to limit workpiece travel and activate wheel withdrawal.
* Adjusts device to dress wheel to computed angles, and to set for automatic dressing during operation.
* Moves controls to adjust, start, and control operation of machine.
* Verifies conformance of ground workpieces to specifications, using such measuring devices as thread measuring wires, dial indicator, gauge blocks, and optical comparator (shadowgraph).
* May be required to have experience with particular type of thread, kind of computation, or level of precision, or with machine of particular type or trade name.
Industry:Professional careers
A professional who sets up and operates external grinding machines to grind external 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 external grinding procedures. Respnsibilities include:
* 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.
* Dresses wheel manually or with preset dressing device.
* Moves controls and reads dials to set angle of workpiece to grinding wheel.
* Positions and secures workpiece between centers, on magnetic chuck, or in chuck jaws, using wrenches.
* Selects and sets grinding wheel speed, work surface speed, and travel rate of powered table.
* Positions and tightens stops to set depth of grinding wheel cut and stroke of worktable.
* Moves controls to feed wheel to workpiece manually or 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.
* 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 size, type, or trade name.
* May set up machines for other workers.
* May be designated according to type of machine operated as roll grinder operator.
Industry:Professional careers
A professional who sets up and operates surface grinding machines with horizontal or vertical spindle and reciprocating or rotating table to grind flat or contoured surfaces of metal workpieces, such as tool, die, and machine parts, usually for limited runs, analyzing specifications and selecting tooling according to knowledge of surface grinding procedures. Respnsibilities include:
* Studies blueprint or layout on workpiece to visualize grinding to be done and plans sequence of operations.
* Positions and secures workpiece on magnetic chuck, in holding fixture, or directly to machine table.
* Selects grinding wheel, grinding speeds, and feed rates for each operation according to knowledge of metal properties and abrasives, and mounts wheel on spindle.
* Moves device to dress wheel.
* Moves controls and reads dials to set rotation speeds and feed rates.
* Positions and tightens stops to limit table travel.
* Moves controls to feed workpiece to wheel or vice versa.
* 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, comparators, dial indicators, gauge blocks, and load test equipment.
* 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 size, type, or trade name.
Industry:Professional careers
A professional who sets up and operates variety of grinding machines, such as external, internal, and surface grinders, to grind metal workpieces, such as machine parts, dies, or tools, according to knowledge of grinding procedures. Respnsibilities include:
* Studies blueprint or layout on workpiece to visualize grinding to be done, and plans sequence of operations.
* Selects grinding wheel, applying knowledge of abrasives and metal properties, and secures it on spindle, using wrench.
* Dresses wheel with dressing device.
* Lifts workpiece manually or with hoist, and positions and secures workpiece to holding device, using wrenches and clamps.
* Selects feed rates, grinding speeds, depth of cuts, and grinding wheel of size, shape, and grade for each operation, applying knowledge of metal properties, abrasives, product specifications, and shop mathematics.
* Positions and tightens stops to limit travel of workpieces or grinding wheel.
* Moves controls to position wheel and workpiece in relation to each other, and to set feed, speed, and depth of cut.
* Starts machine, turns handwheel to feed grinding wheel to workpiece or vice versa, and engages power feeding device.
* Turns valve handle and directs flow of coolant against wheel and workpiece.
* Observes operation and adjusts position and action of wheel and workpiece.
* Verifies dimensions of ground workpieces for conformance to specifications, using measuring instruments, such as templates, micrometers, dial indicators, and gauge blocks.
* Works to tolerances of plus or minus 0.0001 inch.
* May measure, mark, and scribe workpiece to lay it out for grinding.
* May dress grinding wheels to complex profiles, 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 specialized experience with particular materials, product, or precision level or with machine of particular size, type, or trade name.
Industry:Professional careers
A professional who sets up and operates variety of grinding machines, such as external, internal, and surface grinders, to grind metal workpieces, such as machine parts, dies, or tools, according to knowledge of grinding procedures. Respnsibilities include:
* Studies blueprint or layout on workpiece to visualize grinding to be done, and plans sequence of operations.
* Selects grinding wheel, applying knowledge of abrasives and metal properties, and secures it on spindle, using wrench.
* Dresses wheel with dressing device.
* Lifts workpiece manually or with hoist, and positions and secures workpiece to holding device, using wrenches and clamps.
* Selects feed rates, grinding speeds, depth of cuts, and grinding wheel of size, shape, and grade for each operation, applying knowledge of metal properties, abrasives, product specifications, and shop mathematics.
* Positions and tightens stops to limit travel of workpieces or grinding wheel.
* Moves controls to position wheel and workpiece in relation to each other, and to set feed, speed, and depth of cut.
* Starts machine, turns handwheel to feed grinding wheel to workpiece or vice versa, and engages power feeding device.
* Turns valve handle and directs flow of coolant against wheel and workpiece.
* Observes operation and adjusts position and action of wheel and workpiece.
* Verifies dimensions of ground workpieces for conformance to specifications, using measuring instruments, such as templates, micrometers, dial indicators, and gauge blocks.
* Works to tolerances of plus or minus 0.0001 inch.
* May measure, mark, and scribe workpiece to lay it out for grinding.
* May dress grinding wheels to complex profiles, 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 specialized experience with particular materials, product, or precision level or with machine of particular size, type, or trade name.
Industry:Professional careers
A professional who 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. Respnsibilities include:
* 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.
Industry:Professional careers
A professional who sets up and operates jig grinding machine to locate and precision-grind holes and contours in metal objects, such as tool, die, and machine parts, on custom basis, analyzing blueprints and specifications and selecting tooling according to knowledge of jig grinding procedures. Respnsibilities include:
* Studies blueprint, layout on workpiece, or written or oral specifications to visualize grinding to be done and plans sequence of operations.
* Computes and sketches hole and contour dimensions and locations in relation to base reference points and lines.
* Positions and secures workpiece on machine table, and turns handwheels to move table and workpiece to computed position under spindle center, verifying each step with dial indicator.
* Selects grinding wheel, grinding speeds, and feed rates for each operation according to knowledge of metal properties and abrasives, and mounts wheel on spindle.
* Moves controls and reads dials to set grinding speed, feed rate, spindle angle for taper grinding, diameter of planetary action, and limits of automatic reciprocating wheel feed.
* Dresses wheel manually or with preset dressing device.
* Moves controls to feed wheel into hole and against surface of workpiece.
* Verifies hole locations and dimensions for conformance to specifications, using measuring instruments, such as dial indicator, gauge blocks, and telescoping gauges. May be required to have experience with particular material, product, precision level, or with machine of particular type or trade name.
Industry:Professional careers
