- Industri: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who assists supervisor, electronics processing in coordinating activities of workers engaged in polishing wafers for use in manufacturing semiconductor devices. Responsibilities include:
* Reviews production goals with supervisor, electronics processing, prioritizes wafers to be polished, and assigns workers to stations.
* Monitors production and adjusts work assignments when necessary.
* Inspects polished wafers and measures wafer thickness, using gauge, to ensure conformance to customer specifications.
* Trains workers in equipment operation and wafer inspection.
* Observes workers to ensure compliance with safety rules and production standards.
* Completes work schedules and daily production reports.
* May tend polishing machines and demounting machines to substitute for workers during worker absence or to relieve bottlenecks in work congested areas.
Industry:Professional careers
A professional who sets up and adjusts machines that grind and polish edges of glass used in manufacture of mirrors. Responsibilities include:
* Turns handwheels to loosen spindle assemblies of horizontal edging machines and turns calibrated gauges and levers to move specified grinding, smoothing, and polishing wheels into processing position and to set spacing between opposed grinding, smoothing, and polishing wheels, according to thickness and width of mirrors.
* Turns valves to regulate air pressure that forces grinding, smoothing, and polishing wheels against processed surfaces of mirrors.
* Places trial glass on feed conveyor of machines and observes ammeters to determine load on abrasive wheels and examines ground edge to determine if alignment and cutting depth of wheels are in accordance with specifications.
* Loosens spindle assemblies and grinding, smoothing, and polishing wheel units, using handwheels and wrenches, and turns setscrews to adjust operating depths of individual wheels.
* Turns handwheels to adjust edge guides of conveyors to ensure equal grinding, smoothing, and polishing of mirror edges.
* May set up and adjust machine that automatically drills single holes in mirrors.
Industry:Professional careers
A professional who operates sandblasting equipment to cut inscriptions and decorative designs on monumental stone. Responsibilities include:
* Dumps abrasive into mixing chamber of sandblasting equipment.
* Turns valve to admit compressed air into mixing chamber.
* Selects sandblasting nozzle according to size of lettering or intricacy of design and attaches nozzle to hose leading from mixing chamber.
* Moves lever or turns valve to jet abrasive through nozzle.
* Guides nozzle back and forth over stone surface following stencil outline to cut inscription or design in stone.
* Verifies work by measuring or estimating depth of cut as sandblasting progresses, using rule or employing experience in sandblasting.
* Removes parts of stencil or adds stencil during blasting to create differences in depth of cuts and intricate designs.
* May shape (or carve) designs in stone, using sandblasting equipment.
* May sandblast stone without stencil to produce rough, pitted finish.
* May operate portable equipment to sandblast letters and designs on stone at cemetery sites.
* May cut stencils preparatory to sandblasting.
* May operate machine that automatically moves sandblasting nozzle back and forth over stencilled stone.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who sets up and operates machine to grind stone to smooth finish or polish stone to lustrous finish. Responsibilities include:
* Selects grinding or polishing wheels according to type of stone, finish specified, or step in finishing process.
* Moves arm of machine over wheel and attaches wheel to spindle with bolt or latch.
* Spreads abrasive or water on stone by hand, or turns valves to circulate abrasive or water on stone.
* Pushes levers to start machine and guides rotating wheel over surface of stone by hand, observing puddles of water on stone to detect uneven areas.
* Washes stone, using hose, and changes abrasive or wheel as grinding or polishing progresses to surface stone according to specifications.
* May grind and polish curved or irregular stone surfaces, using portable polisher.
* May fill cracks or imperfections in stone with wax that matches color of stone.
* May place, align, and level stone on machine bed.
* May be designated according to type of stone surfaced as machine granite polisher; machine marble polisher.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who operates grinding machine to abrade semiconductor crystal ingot to improve cylindrical shape of ingot and attain specified diameter. Responsibilities include:
* Reads work order to determine target diameter of ingot.
* Measures ingot diameter, using calipers or micrometer, and calculates thickness of material to be removed from ingot and length of grinding time.
* Positions and secures ingot in trunnions or brackets on grinding machine.
* Adjusts machine controls for position of grinding tool and speed of grinding.
* Pushes buttons to activate coolant flow, rotation of ingot, grinding tool, and timer.
* Measures ingot diameter after grinding and continues grinding to attain specifications for diameter.
* May change worn grinding tools and other parts and adjust machine, using handtools.
* May attach graphite pieces to ends of ingot before grinding, using epoxy, and remove graphite and epoxy from ingot after grinding, using radiant oven and solvent.
* May operate saw to cut sample wafer from ingot for inspection.
* May perform routine maintenance on grinding machine, such as adding oil and cleaning machine.
* May operate flat grinding machine to grind flat along length of ingot and be designated crystal flat grinder.
Industry:Professional careers
A professional who sets up and operates one or more automatic stone polishing machines to polish monument tops. Responsibilities include:
* Studies diagram of monument to determine diamond polishing wheel required and attaches wheel to machine, using handtools.
* Measures length and width of monument top and sets dials to control width and length of travel of polishing head.
* Moves stone under head of machine and levels stone, using spirit level, wooden blocks and wedges.
* Positions polishing wheel on top of monument, turns valve to start flow of water, and pulls switch to start polishing wheel.
* Observes ammeter to determine load on motor and turns dial to adjust current according to reading.
* Observes operation of machine and adjusts dials and switches to regulate speed of machine and length and width of travel of polishing wheel.
* Feels stone to determine progress of polishing and rolls stone from under wheel when polishing is completed.
* Signals overhead crane operator to pick up stone.
* Lubricates machine, using grease gun.
* Inspects inventory of diamond polishing wheels and notifies supervisor when wheels need replacing.
* May grind sharp edges from monuments, using portable grinding machine.
Industry:Professional careers
A professional who feeds and off bears automatic belt sanding machine that sands tops of sandstone table and counter tops, assisted by coworker. Responsibilities include:
* Pulls cart loaded with sandstone table and counter tops to work area and transfers stone from cart to roller conveyor.
* Presses button to start sanding machine and pushes stone tops from roller conveyor onto belt conveyor that carries stone under belt sander.
* Guides stone tops emerging from sanding machine onto roller conveyor.
* Feels edges of stone to detect rough or uneven areas and sands edges of stone tops, using sandpaper.
* Pushes stone along roller conveyor for further processing.
Industry:Professional careers
A professional who sets up and operates pattern edging machine to pencil edge pattern (irregularly shaped) mirrors or glass. Responsibilities include:
* Turns screws to level arms of machine suction cup platform, using hex wrench.
* Turns bolts to loosen and extend or retract arms to adjust for size of mirrors or glass being edged, using wrench.
* Positions workpiece on platform and presses down on workpiece to ensure contact with suction cups and stability of workpiece on platform.
* Moves calibrated lever mechanism to adjust height of motorized diamond edging wheel.
* Flips switch and turns valve to start edging machine and flow of water to edging wheel.
* Depresses pedal to activate suction cups that lock workpiece onto platform.
* Grasps hand grips of edging wheel and moves wheel against patterned edges of workpiece to form pencil edge.
* Feels edge of workpiece to ensure specified smoothness and uniformity.
* Depresses pedal to disengage suction cups.
* Removes and carries workpiece from machine and places onto rack.
Industry:Professional careers
