- Industry: Government; Labor
- Number of terms: 77176
- Number of blossaries: 0
- Company Profile:
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who sets up and operates conventional, special-purpose, and numerical control (NC) machines and machining centers to fabricate metallic and nonmetallic parts, and fits and assembles machined parts into complete units, applying knowledge of machine shop theory and procedures, shop mathematics, machinability of materials, and layout techniques. Respnsibilities include:
* Studies blueprints, sketches, drawings, manuals, specifications, or sample part to determine dimensions and tolerances of finished workpiece, sequence of operations, and setup requirements.
* Measures, marks, and scribes dimensions and reference points on material or workpiece as guides for subsequent machining.
* Selects, aligns, and secures holding fixtures, cutting tools, attachments, accessories, and materials on machines, such as mills, lathes, jig borers, grinders, and shapers.
* Calculates and sets controls to regulate machining factors, such as speed, feed, coolant flow, and depth and angle of cut, or enters commands to retrieve, input, or edit computerized machine control media.
* Starts and observes machine operation to detect malfunctions or out-of-tolerance machining, and adjusts machine controls or control media as required.
* Verifies conformance of finished workpiece to specifications, using precision measuring instruments.
* Sets up and operates machine on trial run to verify accuracy of machine settings or programmed control data.
* Fits and assembles parts into complete assembly, using jigs, fixtures, surface plate, surface table, handtools, and power tools.
* Verifies dimensions and alignment of assembly, using measuring instruments, such as micrometers, height gauges, and gauge blocks.
* May install machined replacement parts in mechanisms, machines, and equipment, and test operation of unit to ensure functionality and performance.
* May operate welding equipment to cut or weld parts.
* May develop specifications from general description and draw sketch of part or product to be fabricated.
* May confer with engineers, production personnel, programmers, or others to resolve machining or assembly problems.
* May specialize in setting up and operating NC machines and machining centers and be designated Numerical Control Machine Machinist; or set up and operate NC machines linked to automated storage, retrieval, and moving devices and be designated Flexible Machining System Machinist.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who sets up and operates variety of general or specialized metalworking machines to repair automotive engine parts or auxiliary units, such as transmission, differential, springs, or brakes, applying knowledge of mechanics, shop mathematics, metal properties, and machine procedures. Respnsibilities include:
* Operates lathe to machine water-pump castings, piston heads, valves, and other automotive parts.
* Clamps piston in carriage of piston-grinding-and-turning machine to grind piston heads to fit cylinders.
* Adjusts grinding wheel to make cut of specified depth.
* Clamps valves in position on grinding wheel to grind seating surfaces of valves, moving levers to achieve required depth of cut.
* Operates boring machine to machine internal surfaces of cylinders in engine block.
* Cleans parts, before and after machining, in agitator-type cleaning tank to remove grease, rust stains, and foreign matters.
* Operates lathe, boring, or honing machine to refinish internal surfaces of bearings and connecting rods.
* Verifies dimensions, using measuring instruments, such as micrometers, calipers, and height gauges to ensure adherence to tolerance specifications.
* May grind metal surfaces of engine block or other parts, using portable or bench grinders. May spray worn or gouges parts with molten aluminum, zinc, or other metal to build up parts.
* May examine parts for fractures, using magnaflux test equipment.
* May repair cracks in engine head and other vehicle parts with arc or gas welding equipment.
* May operate drum lathe to resurface brake drums.
* May repair and resurface leaf and coil springs, axles, king pins, bushings, and universal joints.
Industry:Professional careers
A professional who sets up and operates variety of machine tools, and fits and assembles parts to fabricate or repair machine tools and maintain industrial machines, applying knowledge of mechanics, shop mathematics, metal properties, layout, and machining procedures. Respnsibilities include:
* Observes and listens to operating machines or equipment to diagnose machine malfunction and determine need for adjustment or repair.
* Studies blueprints, sketches, machine parts or specifications to determine type and dimensions of metal stock required.
* Measures, marks, and scribes dimensions and reference points on metal stock surfaces, using such measuring and marking devices as calibrated ruler, micrometer, caliper, and scriber.
* Dismantles machine or equipment, using handtools or power tools, to examine parts for defect or to remove defective part.
* Replaces defective part with new part or repairs or reproduces part from various kinds of metal stock, using handtools, such as scraper, file, and drill, and machine tools, such as lathe, milling machine, shaper, borer, and grinder.
* Assembles and test operates machine to verify correction of malfunction.
* Maintains and lubricates machine tools and equipment.
* May weld parts, using arc or gas welding equipment.
* May repair or replace faulty wiring, switches, or relays.
Industry:Professional careers
A professional who performs duties as described under apprentice master title.
Industry:Professional careers
A professional who lays out, mills, drills, turns, grinds, fits, and assembles castings and parts to make metal foundry patterns, core boxes, and match plates, using handtools and machine tools, and analyzing specifications, according to knowledge of patternmaking methods. Respnsibilities include:
* Studies blueprint of part to be cast, computes dimensions, and plans sequence of operations.
* Measures, marks, and scribes layout on castings.
* Sets up and operates machine tools, such as milling machines, lathes, drill presses, and grinders, to machine castings to specifications.
* Assembles pattern, using handtools, and bolts, screws, or other fasteners.
* Cleans and hand finishes workpiece, using emery cloth, files, scrapers, and powered hand grinders.
* Verifies conformance of machined pattern to blueprint specifications, using templates and measuring instruments, such as scale, calipers, and micrometers.
* May make templates for layout and inspection.
* May operate welding equipment in assembling pattern.
Industry:Professional careers
