Machinists - 51-4041.00

O*NET-SOC Description

Set up and operate a variety of machine tools to produce precision parts and instruments. Includes precision instrument makers who fabricate, modify, or repair mechanical instruments. May also fabricate and modify parts to make or repair machine tools or maintain industrial machines, applying knowledge of mechanics, shop mathematics, metal properties, layout, and machining procedures.

DOT Titles Included in this O*NET-SOC Code

  • Deck Engineer
  • Development Mechanic
  • Experimental Mechanic, Electrical
  • Fixture Maker
  • Fluid-Power Mechanic
  • Instrument Maker
  • Instrument-Maker And Repairer
  • Instrument-Maker Apprentice
  • Machinist
  • Machinist Apprentice
  • Machinist Apprentice, Automotive
  • Machinist Apprentice, Outside
  • Machinist, Automotive
  • Machinist, Experimental
  • Machinist, Outside
  • Maintenance Machinist
  • Rocket-Motor Mechanic
  • Test Technician

Sample of Occupations in this SOC Family

51-4011.00 Computer-Controlled Machine Tool Operators, Metal and Plastic
51-4012.00 Numerical Tool and Process Control Programmers
51-4021.00 Extruding and Drawing Machine Setters, Operators, and Tenders, Metal and Plastic
51-4022.00 Forging Machine Setters, Operators, and Tenders, Metal and Plastic
51-4023.00 Rolling Machine Setters, Operators, and Tenders, Metal and Plastic
51-4031.00 Cutting, Punching, and Press Machine Setters, Operators, and Tenders, Metal and Plastic
51-4032.00 Drilling and Boring Machine Tool Setters, Operators, and Tenders, Metal and Plastic
51-4033.00 Grinding, Lapping, Polishing, and Buffing Machine Tool Setters, Operators, and Tenders, Metal and Plastic
51-4034.00 Lathe and Turning Machine Tool Setters, Operators, and Tenders, Metal and Plastic
51-4035.00 Milling and Planing Machine Setters, Operators, and Tenders, Metal and Plastic
51-4041.00 Machinists
51-4051.00 Metal-Refining Furnace Operators and Tenders
51-4052.00 Pourers and Casters, Metal
51-4061.00 Model Makers, Metal and Plastic
51-4062.00 Patternmakers, Metal and Plastic
51-4071.00 Foundry Mold and Coremakers
51-4072.00 Molding, Coremaking, and Casting Machine Setters, Operators, and Tenders, Metal and Plastic
51-4081.00 Multiple Machine Tool Setters, Operators, and Tenders, Metal and Plastic

Related Occupations

Tasks

  • Advise clients about the materials being used for finished products.
  • Align and secure holding fixtures, cutting tools, attachments, accessories, and materials onto machines.
  • Calculate dimensions and tolerances using knowledge of mathematics and instruments such as micrometers and vernier calipers.
  • Check work pieces to ensure that they are properly lubricated and cooled.
  • Clean and lubricate machines, tools, and equipment to remove grease, rust, stains, and foreign matter.
  • Confer with engineering, supervisory, and manufacturing personnel to exchange technical information.
  • Confer with numerical control programmers to check and ensure that new programs or machinery will function properly, and that output will meet specifications.
  • Design fixtures, tooling, and experimental parts to meet special engineering needs.
  • Dismantle machines or equipment, using hand tools and power tools, to examine parts for defects and replace defective parts where needed.
  • Establish work procedures for fabricating new structural products, using a variety of metalworking machines.
  • Evaluate experimental procedures, and recommend changes or modifications for improved efficiency and adaptability to setup and production.
  • Fit and assemble parts to make or repair machine tools.
  • Install experimental parts and assemblies such as hydraulic systems, electrical wiring, lubricants, and batteries into machines and mechanisms.
  • Install repaired parts into equipment, or install new equipment.
  • Lay out, measure, and mark metal stock to display placement of cuts.
  • Machine parts to specifications using machine tools such as lathes, milling machines, shapers, or grinders.
  • Maintain industrial machines, applying knowledge of mechanics, shop mathematics, metal properties, layout, and machining procedures.
  • Measure, examine, and test completed units to detect defects and ensure conformance to specifications, using precision instruments such as micrometers.
  • Monitor the feed and speed of machines during the machining process.
  • Observe and listen to operating machines or equipment to diagnose machine malfunctions and to determine need for adjustments or repairs.
  • Operate equipment to verify operational efficiency.
  • Position and fasten work pieces.
  • Prepare working sketches for the illustration of product appearance.
  • Program computers and electronic instruments such as numerically controlled machine tools.
  • Select the appropriate tools, machines, and materials to be used in preparation of machinery work.
  • Set controls to regulate machining, or enter commands to retrieve, input, or edit computerized machine control media.
  • Set up and operate metalworking, brazing, heat-treating, welding, and cutting equipment.
  • Set up, adjust, and operate all of the basic machine tools and many specialized or advanced variation tools to perform precision machining operations.
  • Study sample parts, blueprints, drawings, and engineering information to determine methods and sequences of operations needed to fabricate products, and determine product dimensions and tolerances.
  • Support metalworking projects from planning and fabrication through assembly, inspection, and testing, using knowledge of machine functions, metal properties and mathematics.
  • Test experimental models under simulated operating conditions for such purposes as development, standardization, and feasibility of design.

Detailed Work Activities

  • adjust production equipment/machinery setup
  • advise clients or customers
  • confer with engineering, technical or manufacturing personnel
  • design tools or mechanical devices
  • determine tasks needed to complete machined products
  • examine products or work to verify conformance to specifications
  • fabricate, assemble, or disassemble manufactured products by hand
  • follow statistical process control procedures
  • identify base metals for welding
  • install equipment or attachments on machinery or related structures
  • lay out machining, welding or precision assembly projects
  • load or unload material or workpiece into machinery
  • maintain or repair industrial or related equipment/machinery
  • maintain welding machines or equipment
  • monitor production machinery/equipment operation to detect problems
  • move or fit heavy objects
  • operate metal or plastic fabricating equipment/machinery
  • perform safety inspections in manufacturing or industrial setting
  • program computer numerical controlled machines
  • read blueprints
  • read specifications
  • read technical drawings
  • recognize characteristics of alloys
  • recognize characteristics of metals
  • set up and operate variety of machine tools
  • set up computer numerical control machines
  • set up production equipment or machinery
  • solve machine tool problems
  • understand machine setup instructions
  • understand technical operating, service or repair manuals
  • use arc welding equipment
  • use drafting or mechanical drawing techniques
  • use hand or power tools
  • use knowledge of fire suppression methods in industrial emergencies
  • use knowledge of metric system
  • use machining practices
  • use non-destructive test equipment
  • use precision measuring tools or equipment
  • use robotics systems technology
  • use technical information in manufacturing or industrial activities
  • use x-ray or magnetic inspection techniques
  • weld together metal parts, components, or structures