Machine Tools - Occupations Duties

Detail Maker And Fitter Occupation

Job Duties:

• Sets up prototype metalworking machines, like lathe, milling machine, or forging press to verify conformance to operating specifications, according to knowledge of inspection and machining techniques, tools processes
• Examine electrical components, like electrical timers, relays and switches, for making sure adequate functioning of automatic cycles
• Compare rotary table indexing, when present, to specifications
• Inspect fixture alignment, machine table movement, and position of cutting tools, using instruments, like dial indicators, height setting devices gauges
• Install dies or tool holders and tools, following blueprints, and using handtools measuring instruments
• Sets controls to regulate speed of feed, depth of cut, or length of ram stroke, according to type of machine being tested
• Operate machine to obtain sample workpiece
• Verify conformance of workpiece to specifications, using measuring instruments, like calipers, micrometers, and gauges
• Determine cause of malfunction from inspection data
• Repair electrical and mechanical components reports electronic malfunction to supervisor
• Record operational data, like pressure readings, length of stroke, feeds, and speeds, for customer use
• May demonstrate setup operation for customer personnel
• May be designated according to type of machine as Honing-Machine Try-Out Setter machine tools .

Diamond die Polisher Occupation

Job Duties:

• Laps polishes bores of diamond wire drawing dies to specified dimensions
• Position die in holding device of machine
• Insert steel needle in machine spindle, positions needle inside bore of die starts machine which rotates needle in bore
• Dabs progressively finer diamond-dust paste or solution on needle during lapping operation
• Pull specified gauge wire through bore measures wire with micrometer to verify bore dimension
• Inspect bore of die for cracks other defects, using magnifying glass or microscope
• Replace worn needles sharpens points on grinder
• May insert press hand lapping tool in bore of rotating die
• May drill initial bore, using diamond drills.

Diamond Driller Occupation

Job Duties:

• Drill minute channels in industrial diamonds for use in wire-drawing dies, using drill, lathe, and handtools
• Position diamond in chuck of lathe equipped with diamond-charged wire drilling point or forms wax cup around diamond by hand, fills cup with diamond dust mixture and inserts steel needle into lathe to act as drilling tool
• Regulate speed of revolutions reciprocating action of drilling mechanism
• Advance cutting point of drill according to specifications covering depth contour of channel, working to tolerance of 0.0001 inch
• Examine depth and shape of channel with microscope regrinds point of drill
• Drill backout hole drilled from opposite side of stone to meet channel to prevent chipping surface of stone
• Laps inner wall of channel by means of machine that revolves stone as rotating wire or needle rocks back forth in channel, working to hole diameter tolerance of 0.0000018 inch
• Test accuracy of die hole by pulling specified length of wire through die measuring its resistance in Wheatstone bridge having readings translated into wire diameter or by taking a series of readings along length of wire with electronic micrometer
• Secure stone in metal mounting, using molten solder
• May drill cavity spot in face of stone to hold diamond dust mixture, by pressing pointed end of diamond chip against revolving stone, using pliers
• May be designated according to operation performed as Finisher, Fine-Diamond Dies machine tools .

Diamond Mounter Occupation

Job Duties:

• Position and mounts industrial diamonds in tools used for dressing and truing I grinding wheels and for machining metal, according to type size of tool by one of following methods
• 1 Places tools shank in press moves controls to force diamond into shank
• Apply solder & flux around diamond places tool into electric induction furnace for specified time to bond diamond to shank
• 2 Inserts wire through hole in diamond twists wire around pin on tool shank
• Position mold around diamond and shank pours molten metal into mold to cast tool containing diamond
• 3 Presses powdered metal into mold around diamond on tool shank places in sintering furnace for specified time to fabricate tool containing diamond
• 4 Aligns clamps diamond in tool shank
• Clean joints of diamond and shank, using wire brush cleaning solution
• Bond shank and diamond together, using brazing alloy acetylene hand torch.

Die Cutter Diamond Occupation

Job Duties:

• Laps polishes bores of diamond wire drawing dies to specified dimensions
• Position die in holding device of machine
• Insert steel needle in machine spindle, positions needle inside bore of die starts machine which rotates needle in bore
• Dabs progressively finer diamond-dust paste or solution on needle during lapping operation
• Pull specified gauge wire through bore measures wire with micrometer to verify bore dimension
• Inspect bore of die for cracks other defects, using magnifying glass or microscope
• Replace worn needles sharpens points on grinder
• May insert press hand lapping tool in bore of rotating die
• May drill initial bore, using diamond drills.

Driller Fine diamond Dies Occupation

Job Duties:

• Drill minute channels in industrial diamonds for use in wire-drawing dies, using drill, lathe, and handtools
• Position diamond in chuck of lathe equipped with diamond-charged wire drilling point or forms wax cup around diamond by hand, fills cup with diamond dust mixture and inserts steel needle into lathe to act as drilling tool
• Regulate speed of revolutions reciprocating action of drilling mechanism
• Advance cutting point of drill according to specifications covering depth contour of channel, working to tolerance of 0.0001 inch
• Examine depth and shape of channel with microscope regrinds point of drill
• Drill backout hole drilled from opposite side of stone to meet channel to prevent chipping surface of stone
• Laps inner wall of channel by means of machine that revolves stone as rotating wire or needle rocks back forth in channel, working to hole diameter tolerance of 0.0000018 inch
• Test accuracy of die hole by pulling specified length of wire through die measuring its resistance in Wheatstone bridge having readings translated into wire diameter or by taking a series of readings along length of wire with electronic micrometer
• Secure stone in metal mounting, using molten solder
• May drill cavity spot in face of stone to hold diamond dust mixture, by pressing pointed end of diamond chip against revolving stone, using pliers
• May be designated according to operation performed as Finisher, Fine-Diamond Dies machine tools .

Machine Try out Setter Occupation

Job Duties:

• Sets up prototype metalworking machines, like lathe, milling machine, or forging press to verify conformance to operating specifications, according to knowledge of inspection and machining techniques, tools processes
• Examine electrical components, like electrical timers, relays and switches, for making sure adequate functioning of automatic cycles
• Compare rotary table indexing, when present, to specifications
• Inspect fixture alignment, machine table movement, and position of cutting tools, using instruments, like dial indicators, height setting devices gauges
• Install dies or tool holders and tools, following blueprints, and using handtools measuring instruments
• Sets controls to regulate speed of feed, depth of cut, or length of ram stroke, according to type of machine being tested
• Operate machine to obtain sample workpiece
• Verify conformance of workpiece to specifications, using measuring instruments, like calipers, micrometers, and gauges
• Determine cause of malfunction from inspection data
• Repair electrical and mechanical components reports electronic malfunction to supervisor
• Record operational data, like pressure readings, length of stroke, feeds, and speeds, for customer use
• May demonstrate setup operation for customer personnel
• May be designated according to type of machine as Honing-Machine Try-Out Setter machine tools .

Plaster pattern Caster Occupation

Job Duties:

• Cast finishes plaster patterns used in making precision sand molds for dies, tools, and machine parts, according to specifications
• Construct boxlike enclosure around part to be cast, filling in cracks openings with clay
• Lubricate surface with parting agent that prevents plaster from sticking to part
• Mix plaster pours it into enclosure
• Reinforce plaster with hemp fiber small steel rods or heavy wire
• Remove hardened plaster cast from enclosure
• Patch broken edges fractures, using clay or plaster
• Trim plaster pattern to tolerance by scraping shaping plaster surfaces by hand following blueprint, using flat metal scrapers
• Verify dimensions, using measuring instruments, like calipers, vernier gauge, and protractor
• Make identifying marks on pattern with crayon, inked rubber stamps, or pointed tool
• Shellac finished surfaces to harden smooth them.

Plastic Duplicator Occupation

Job Duties:

• Cast plastic reproductions of models, patterns, and prototype parts
• Examine part to define sections that can be cast assembled to obtain reproduction
• Construct boxlike enclosure around section of part to be duplicated
• Brush or sprays surface of section with parting agent to prevent plastic from sticking to surface
• Cast part, using either of following methods
• 1 Brushes plastic facing coat on section of part to be cast
• Mix plastic resin brushes thin, uniform coat over facing coat
• Cuts fiberglass cloth to approximate size of cast places it over resin
• Brush cloth to smooth it, applies additional coat of resin, and repeats procedure until alternate layers of fiberglass resin are built up to specified thickness
• 2 Brushes plastic facing coat on section of part to be cast, mixes plastic resin, and pours it into enclosure until cast is of specified thickness
• Remove hardened cast from section
• File, grinds, and sands cast to remove jagged edges to cut cast down to specified dimensions
• Form base and bracing structure to support cast, using handtools liquid adhesive
• May assemble casts to produce completed model, pattern, or prototype
• May bolt or otherwise fasten metal inserts to casts at specified points.

Spotter Occupation

Job Duties:

• Locate marks specified drilling position on surfaces of diamonds used as dies
• Place diamond under microscope moves it at various angles until clear channel through gem can be seen
• Form indentation in diamond surface to mark spot for drilling, using diamond chips held in pliers
• Drill starting hole of minute dimensions, using electrically powered hand drill.