Occupation: Computer Numerically Controlled Tool Programmers

Computer Numerically Controlled Tool Programmers

Develop programs to control machining or processing of materials by automatic machine tools, equipment, or systems. May also set up, operate, or maintain equipment.

51-9162.00 | 15 tasks | 4 job titles
Reported Job Titles (4)
  • CAD CAM Programmer (Computer-Aided Design Computer-Aided Manufacturing Programmer)
  • Computer Numerical Control Machinist (CNC Machinist)
  • Computer Numerical Control Programmer (CNC Programmer)
  • Programmer
Core Tasks (12)
  • Write programs in the language of a machine's controller and store programs on media, such as punch tapes, magnetic tapes, or disks.
  • Determine the sequence of machine operations, and select the proper cutting tools needed to machine workpieces into the desired shapes.
  • Revise programs or tapes to eliminate errors, and retest programs to check that problems have been solved.
  • Analyze job orders, drawings, blueprints, specifications, printed circuit board pattern films, and design data to calculate dimensions, tool selection, machine speeds, and feed rates.
  • Write instruction sheets and cutter lists for a machine's controller to guide setup and encode numerical control tapes.
  • Observe machines on trial runs or conduct computer simulations to ensure that programs and machinery will function properly and produce items that meet specifications.
  • Enter computer commands to store or retrieve parts patterns, graphic displays, or programs that transfer data to other media.
  • Modify existing programs to enhance efficiency.
  • Determine reference points, machine cutting paths, or hole locations, and compute angular and linear dimensions, radii, and curvatures.
  • Sort shop orders into groups to maximize materials utilization and minimize machine setup time.
  • Compare encoded tapes or computer printouts with original part specifications and blueprints to verify accuracy of instructions.
  • Perform preventative maintenance or minor repairs on machines.
Supplemental Tasks (3)
  • Prepare geometric layouts from graphic displays, using computer-assisted drafting software or drafting instruments and graph paper.
  • Draw machine tool paths on pattern film according to guidelines for tool speed and efficiency, using colored markers.
  • Enter coordinates of hole locations into program memories by depressing pedals or buttons of programmers.