- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who sets up and operates combination external- and internal- (universal) grinding machine to grind external and internal cylindrical and tapered surface of rotating workpieces, such as tool, die, and machine parts, usually for limited runs, analyzing blueprints and specifications and selecting tooling according to knowledge of external and 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.
* Dresses wheel manually or with preset dressing device.
* Moves controls and reads dials to set rotation speeds and feed rates.
* Positions and tightens stops or cams to limit travel of workpiece or wheel.
* Moves controls to feed grinding wheel to workpiece or vice versa manually or automatically.
* Turns valve handle and directs flow of coolant against wheel and workpiece.
* Verifies dimensions of ground workpiece, using such measuring instruments as micrometers, dial indicators, gauge blocks, and optical comparator.
* May dress grinding wheel to specified profile, 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 horizontal or vertical honing machines for honing-machine operators, production engaged in production honing of metal objects. Respnsibilities include:
* Reads blueprint to select tooling and plans sequence of operations.
* Selects and secures tool in spindle, using wrenches.
* Positions workpiece in fixture or on machine table, securing it with clamps and wrenches, and verifies positions with instruments, such as surface gauges and dial indicators.
* Selects feed rate, honing tool rotation speed, and depth of cut, according to knowledge of metal properties and abrasives.
* Moves controls to position tool in relation to workpiece and to set feed rate and spindle speed.
* Positions and tightens stops, using wrench, to control length of honing tool stroke.
* Starts machine and turns handwheels to feed tool to workpiece.
* Measures first-run workpiece for conformance to specifications, using micrometers and fixed gauges.
* May instruct new workers in machine operation.
Industry:Professional careers
A professional who sets up and operates grinding machines, such as surface and universal, carbide, drill, and tool-and-cutter grinders, to sharpen cutting tools to specifications, using blueprints, job orders, and knowledge of abrasives and metal properties. Respnsibilities include:
* Reviews blueprints and job orders to plan production sequence.
* Selects grinding wheel of shape and grade and attaches to spindle, using wrenches.
* Positions and secures cutting tool on machine table, using magnetic chuck or holding fixture, or mounts tool on arbor and clamps between centers.
* Turns handwheels to position table or spindle to obtain specified taper and bevel on edges of cutting tools.
* Moves controls to set cutting tool rotation speed, feed rate, and grinding wheel rotation speed.
* Starts machine and turns wheel or engages feed to move workpiece to grinding wheel.
* Measures sharpened cutting tools to verify conformance to specifications, using fixed gauges, micrometers, calipers, optical comparators, and surface gauges.
* Dresses abrasive wheel to change cutting action or shape.
* May grind special form tools, involving special setups and wheel dressing.
* May analyze specifications and select tooling to be used on production jobs.
* May design, modify, or make special tools according to specifications or tooling requirements.
* May braze or solder carbide tips to cutting tools.
* May be required to have specialized experience with particular type of cutting tool sharpened or machine operated and be designated Broach Grinder; Drill Sharpener; Hob Grinder.
Industry:Professional careers
A professional who sets up buffing line to buff metal parts, such as automobile trim or hardware, to specified finish, following work order and using knowledge of metals, abrasives, and finishing techniques. Respnsibilities include:
* Reads work order to determine part to be buffed.
* Selects holding fixtures and bolts them to drive mechanism.
* Selects buffs and positions and attaches them to spindles, using knowledge of buffing operations to determine type of buffs, angle of contact, and pressure against workpiece.
* Sets timers to control speed of indexing, according to size and material of workpiece and to control application of lubricant and abrasive.
* Examines finish of first piece through buffing line for conformance to specifications.
* Adjusts setup to achieve specified finish.
* May change speed of buffing wheels by varying ratio of drive pulleys.
Industry:Professional careers
A professional who sets up metal-grinding machines, such as external, internal, surface, and centerless grinders, for grinder operators, production, according to specifications, tooling instructions, standard charts, and knowledge of grinding procedures, and operates machine to grind first-run workpiece. Respnsibilities include:
* Reads from blueprint and job order product specifications for dimensions, tolerances, and number of parts to be ground and tooling instructions, such as speeds, feed rates, holding fixtures, and grinding wheels to be used.
* Mounts grinding wheels on spindles with wrenches.
* Dresses wheels to specifications, using dressing devices.
* Moves controls to set specified grinding speeds, feed rates, and angle of grinding wheel to workpiece or vice versa.
* Positions and tightens cams to control depth of cut and length of stroke.
* Lifts and positions workpieces manually or with hoist, and secures them on machine tables, faceplates, or magnetic chucks, in chuck jaws, or between centers, using wrenches and clamps.
* Starts machine, moves controls to adjust machine settings, and observes operation.
* Verifies first-run products for conformance to specifications, using such measuring instruments as micrometers, calipers, and preset gauges.
* May feed machine by hand.
* May direct flow of coolant over cutting area.
* May measure workpiece prior to grinding to determine amount of material to be removed.
* May be required to have experience with particular material, product, or precision level, or machine of particular size, type, or trade name.
Industry:Professional careers
A professional who sets up and operates semiautomatic buffing machine to buff parts, such as automobile trim or hardware to specified finish. Respnsibilities include:
* Reads work order to determine parts to be buffed and setup procedure.
* Selects holding fixture and bolts it to feed arm.
* Slides spacers between buffs on spindle to set spacing.
* Measures and sets angle of feed arm to control position of workpiece against buff, according to specifications or using knowledge of machine operation.
* Sets length of traverse and stroke of feed arm by adjusting air cylinder and setting stops.
* Starts buff revolving and clamps workpiece in fixture.
* Presses button to feed workpiece against buff.
* Removes buffed part from fixture and examines it to ensure that surface coloration meets specifications.
* Adjusts angle, feed, or traverse of machine to achieve specified finish.
Industry:Professional careers
A professional who sets up and operates one or more centerless grinding machines to grind external or internal cylindrical or tapered surfaces of metal workpieces to blueprint specifications, following tooling instructions and standard charts and applying knowledge of grinding procedures. Respnsibilities include:
* Reads blueprint and job order for product specifications, such as dimensions, tolerances, and number of parts to be ground, and tooling instructions, such as grinding speeds, feed rates, holding fixtures, and grinding wheels to be used.
* Mounts grinding wheel and regulating wheel on spindles with wrenches.
* Dresses wheels to specifications, using dressing device.
* Moves controls to set specified grinding speeds, feed rates, and spacing between wheel faces.
* Positions and secures work rest at specified height, using wrenches.
* Lifts and positions workpiece manually or with hoist, and secures it between wheels and on work rest.
* Starts machine and observes operation.
* Verifies dimensions of ground workpiece for conformance to specifications, using measuring instruments, such as micrometers, calipers, and preset gauges.
* Changes worn grinding wheels, using wrenches.
* May set up automatic work-feeding device.
* May grind nonmetallic materials.
* May be required to have experience with custom or production work or 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 one or more centerless grinding machines to grind external or internal cylindrical or tapered surfaces of metal workpieces to blueprint specifications, following tooling instructions and standard charts and applying knowledge of grinding procedures. Respnsibilities include:
* Reads blueprint and job order for product specifications, such as dimensions, tolerances, and number of parts to be ground, and tooling instructions, such as grinding speeds, feed rates, holding fixtures, and grinding wheels to be used.
* Mounts grinding wheel and regulating wheel on spindles with wrenches.
* Dresses wheels to specifications, using dressing device.
* Moves controls to set specified grinding speeds, feed rates, and spacing between wheel faces.
* Positions and secures work rest at specified height, using wrenches.
* Lifts and positions workpiece manually or with hoist, and secures it between wheels and on work rest.
* Starts machine and observes operation.
* Verifies dimensions of ground workpiece for conformance to specifications, using measuring instruments, such as micrometers, calipers, and preset gauges.
* Changes worn grinding wheels, using wrenches.
* May set up automatic work-feeding device.
* May grind nonmetallic materials.
* May be required to have experience with custom or production work or 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 one or more vertical or horizontal honing machines to hone internal or external surfaces of objects, such as cylinders, bearings, and connecting rods to specifications, following tooling instructions, standard charts, and honing procedures. Respnsibilities include:
* Reads blueprint and job order for product specifications, such as dimensions, tolerances, and number of parts to be honed, speeds, feed rates, work-holding fixtures, and honing tools to be used.
* Positions and secures fixtures on machine table, using squares, steel rules, micrometers, and wrenches.
* Lifts workpiece manually or with hoist and positions and secures fixture with clamps and wrenches.
* Inserts and tightens specified tool in spindle.
* Moves controls to set tool-feed rate and spindle speed.
* Sets stops with wrench to control length of stroke and depth of cut.
* Starts machine and turns handwheels or engages automatic mechanism to feed and oscillate tool along workpiece surface.
* Turns valve handle to direct flow of coolant against tool and workpiece.
* Measures honed workpiece for conformance to specifications, using measuring instruments, such as preset gauges, micrometers, calipers, and comparators.
* May be required to have experience with custom or production work, or with particular material or product, or with machine of particular size, type, or trade name, and be designated accordingly.
Industry:Professional careers
A professional who sets up and operates vertical or horizontal honing machine to hone internal or external surfaces of metal objects, such as prototype cylinders, bearings, or connecting rods, usually on custom basis, analyzing specifications and selecting tooling according to knowledge of honing procedures. Respnsibilities include:
* Studies blueprint to visualize honing to be done and plans sequence of operations.
* Positions workpiece in fixture or on machine table, and secures it with clamps and wrenches, verifying positions with instruments, such as surface gauges and dial indicators.
* Selects feed rate, honing speed, depth of cut, and honing tool for each operation, according to knowledge of metal properties, abrasives, and shop mathematics.
* Positions and secures tool in spindle.
* Moves controls to position tool in relation to workpiece and to set feed rate and spindle speed.
* Turns nut on tool or sets automatic mechanism to expand tool to selected diameter.
* Positions and tightens stops with wrench to control length of stroke.
* Starts machine and turns handwheels to feed tool to workpiece.
* Engages automatic mechanism to feed tool along workpiece with oscillating action.
* Turns valve handle and directs flow of coolant against tool and workpiece.
* Measures honed workpiece for conformance to specifications, using electromechanical limit gauges, surface gauges, micrometers, and telescoping gauges. May use special optical inspection equipment.
* May replace worn honing stones.
* May be required to have experience with particular material or product or with machine of particular size, type, or trade name and be designated accordingly.
Industry:Professional careers
