- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who sets up and operates keyseating machine (vertical shaper) to cut keyseats in metal workpieces, such as wheels and gears, according to specifications. Respnsibilities include:
* Reads blueprint or job order to determine dimensions and tolerances of workpiece, and tooling instructions, such as holding fixtures, cutting speeds, depth of cut, and cutting tools to be used.
* Measures workpiece and scribes guidelines for cutting keyseat, using steel rule and scriber.
* Mounts specified tool on ram.
* Lifts workpiece manually or with hoist, and aligns it with cutting tool.
* Secures workpiece in fixture or to post on machine table, using clamps and wrenches.
* Moves controls to set specified ram speed, length of stroke, and feed rate.
* Turns handwheel to feed reciprocating tool to workpiece until depth of cut conforms to specifications, or engages automatic feeding device.
* Verifies conformance of machined workpiece to specifications, using fixed gauges, calipers, and micrometers.
* Turns handwheel or adjustment screw to tilt table to cut tapered keyseats.
Industry:Professional careers
A professional who sets up and operates pantograph-milling machine to mill contoured two-dimensional profiles and three-dimensional cavities in metal parts of such products as dies and molds for metal diecasting and plastic molding, duplicating contour of template or model to specified scale. Respnsibilities include:
* Studies blueprint, workpiece, and template or model, and plans operations.
* Positions and secures workpiece and model or template in relation to each other on machine, using work aids and handtools, such as clamps, parallel blocks, and wrenches.
* Selects tracing stylus, cutting tool, and cutting speed, according to operation to be performed and knowledge of metal properties and machining methods.
* Mounts stylus and tool, using handtools.
* Turns controls to set cutting speed and dimensional ratio of model to workpiece, and starts machine.
* Grasps knob and moves stylus back and forth against template or model, causing similar action of tool against workpiece.
* Watches tool, feels action and resistance of tool through hand on knob, and manually controls cutting action in response to these stimuli.
* Verifies conformance of machined workpiece to specifications, using templates and measuring instruments, such as micrometers, dial indicators, and gauges.
* May make templates or cutting tools for own use.
Industry:Professional careers
A professional who sets up and operates profile milling machine equipped with built-in or attached tracing mechanism that guides cutting tool in parallel relationship to stylus to mill two-dimensional scale profiles from models, according to specifications. Respnsibilities include:
* Examines layout or workpiece, blueprints, and work order to ascertain type of tooling required and finished dimensions of workpiece.
* Positions and secures workpiece and template or model on machine table, using clamp, vise, blocks, measuring instruments, and wrenches.
* Selects and inserts specified stylus and cutting tool, using handtools.
* Starts machine, turns controls to change speed of cutting tool, directional movement of stylus, and automatic feed rate to ensure conformance of milled workpiece to specifications.
* Verifies conformance of workpiece, using dial and surface gauges, templates, calipers, and micrometers.
* Removes milled workpiece and template or model from machine table.
* May mill nonmetallic materials.
* May turn lever to start flow of coolant or lubricant on machining area.
* May manually move stylus to mill workpiece.
Industry:Professional careers
A professional who sets up and operates vertical milling machine with spindle mounted within larger rotary head so that rotating cutter can move anywhere within given circle to mill complex shapes, such as arcs and tangents, without changing position of workpiece or machine table.
* Computes dimensions of shapes to be milled and successive positions of cutter in relation to rotary head, using knowledge of shop mathematics.
* Moves controls to position and move cutter in computed directions to mill specified shapes.
Industry:Professional careers
A professional who sets up and operates routers, such as pin, horizontal, and radial arm, to cut, trim, slot, scarf, chamfer, profile, and shape metallic and nonmetallic materials, parts, castings, and tooling, according to specifications and knowledge of machine routing procedures. Respnsibilities include:
* Reads work order, tooling instructions, blueprints, sketches, or other specifications to determine machining information, such as material needed, sequence of operations, quantity, tolerances, and dimensions of finished parts.
* Installs machine accessories, such as pins, collars, cutting tools, blocks, templates, and router boards, using handtools and power tools.
* Positions and secures parts or materials on machine, using bolts, clamps, or other fasteners.
* Adjusts controls to regulate speed of cutting tool, depth of cut, and flow of air, coolant, and lubricant.
* Starts machine and guides material against cutting tool or cutting tool against material.
* Verifies conformance of finished workpiece to specified tolerances, using precision measuring instruments.
* Observes machine operation and reports malfunctions to supervisor.
* May engage automatic feed of material.
* May record production output.
* May mark reference points on workpiece.
* May use milling cutters in router to shape parts.
* May operate specific type router and be designated Router Operator, Pin or Router Operator, Radial.
Industry:Professional careers
A professional who sets up and operates one or more shapers that reciprocate bar tool against stationary workpiece to plane, shape, or groove metal workpieces, such as machine, tool, or die parts, according to specifications and knowledge of shaping operations. Respnsibilities include:
* Studies blueprint, dimensioned sketch, or layout on workpiece, and plans sequence of operations.
* Positions and secures workpiece in vise or directly on machine table, manually or with hoist, using clamps or holding fixture.
* Verifies position with such instruments as dial indicator, thickness gauges, and surface gauge.
* Selects cutting speed, length of stroke, depth of cut, and cutting tool to be used, according to knowledge of metal properties and shop mathematics.
* Positions and secures cutting tool in toolpost.
* Turns handwheels to position tool and workpiece in relation to each other and to feed reciprocating tool to workpiece, or engages automatic feed.
* Verifies conformance of shaped workpiece to specifications within prescribed tolerances, using micrometers, calipers, and gauge blocks.
* Turns valve handle to direct flow of coolant against tool and workpiece.
* May shape contours by intermittently turning handwheel to feed tool to curved layout line while watching cutting action.
* May compute angles and manipulate controls to tilt table or toolhead of universal shaper for angular or taper shaping.
* May sharpen tools, using bench grinder. May shape nonmetallic materials.
* May record production output.
Industry:Professional careers
A professional who sets up and operates thread-milling machine to mill threads on external and internal surfaces of metal workpieces, applying knowledge of thread types and thread-milling methods. Respnsibilities include:
* Studies blueprints, charts, drawings, and work orders to determine pitch and depth of thread, and type of tooling specified.
* Lifts workpiece to fixture and bolts or clamps it in place, using handtools.
* Selects and inserts cutting tool in machine spindle.
* Sets and adjusts speed of cutting tool and feed rate of workpiece.
* Positions cutting tool and workpiece to computed angles, and installs gears, cams, and stops to control multiple movements of workpiece and cutting tool.
* Starts machine and inspects workpiece during and on completion of milling operation, using measuring instruments, such as thread gauge and thread measuring wires. Removes milled workpiece from fixture.
* May compute thread dimensions, using standard formulas.
Industry:Professional careers
A professional who sets up and operates numerical control router machine to rout (cut) parts, such as individual printed circuit boards (PCB's) from printed circuit panels or metal workpieces from sheet metal stock. Respnsibilities include:
* Reviews setup instructions and specifications.
* Loads control media into computer console or enters commands to retrieve programmed control data.
* Selects and installs specified cutting tools into machine spindle or magazine.
* Positions and secures materials onto indexing table of machine.
* Enters commands to activate machine that automatically aligns indexing table and panels or metal stock under tool spindle and routs or notches materials, according to programmed instructions.
* Monitors machine operation and display readouts to detect malfunction.
* Measures dimensions of finished parts to verify conformance to specifications, using precision measuring instruments.
* Notifies supervisor of machine malfunction or when parts do not conform to specifications.
* Cleans machine, using solvent, rag, and airhose.
* May perform maintenance and replace worn or damaged cutting tools, using handtools.
Industry:Professional careers
A professional who sets up and operates machine that automatically shaves steel wires to form steel wool. Respnsibilities include:
* Installs specified cutting tools in machine toolholder, using handtools.
* Turns controls to adjust speed and depth of cut according to cutting specifications.
* Starts machine and threads wire stock through automatic feed mechanism.
* Places cut ribbons of wire (steel wool) on machine rollers which carry them to catch basin.
* Ties broken ribbons.
* Replaces worn tools to maintain product quality.
* May operate steel wool balling, padding, and polyethylene extruding machines to produce soap-impregnated steel wool pads and polyethylene foam-backed, soap-impregnated steel wool pads.
Industry:Professional careers
A professional who sets up and operates planer-type machine to cut matting (knurling) on sighting ribs of shotguns to improve appearance and reduce glare. Respnsibilities include:
* Attaches holding fixtures and matting tools on machine and clamps rib, or barrel with rib attached, in fixture, using handtools.
* Depresses lever to position cutting tool in relation to rib, and starts machine which moves rib under stationary tool.
* Maintains even pressure on lever to obtain smooth cut.
* Turns adjustment knob after each pass to increase depth of cut.
* Removes rib from holding fixture.
* May shim fixture to level workpiece.
* May hone surface of rib to remove burs.
Industry:Professional careers
