CNC Operator - 2020

Competency-based occupation
Onet code: 51-4011.00

2

Years

26

Skills

486h

Related instruction
Classroom Instruction Topics
  • Solid Works I (DFT-42/ENE-42)
  • Blueprint Reading (ENE-51/DFT-51)
  • General Machine Shop & Theory of Machining (MAN-36)
  • Occupational Safety & Health Administration (OSHA) Standards for General Industry (MAN-55/ELE-55)
  • CNC Machine Set-up and Operations (MAN-56)
  • CNC Program Writing (MAN-57)
  • Apprenticeship Work Experience (APP-450)
On-the-job Training
  • Occupational Skills
    • Remove and replace dull cutting tools.
    • Measure dimensions of finished workpieces to ensure conformance to specifications, using precision measuring instruments, templates, and fixtures.
    • Mount, install, align, and secure tools, attachments, fixtures, and workpieces on machines, using hand tools and precision measuring instruments.
    • Stop machines to remove finished workpieces or to change tooling, setup, or workpiece placement, according to required machining sequences.
    • Transfer commands from servers to computer numerical control (CNC) modules, using computer network links.
    • Check to ensure that workpieces are properly lubricated and cooled during machine operation.
    • Set up and operate computer-controlled machines or robots to perform one or more machine functions on metal or plastic workpieces.
    • Insert control instructions into machine control units to start operation.
    • Review program specifications or blueprints to determine and set machine operations and sequencing, finished workpiece dimensions, or numerical control sequences.
    • Listen to machines during operation to detect sounds such as those made by dull cutting tools or excessive vibration and adjust machines to compensate for problems.
    • Monitor machine operation and control panel displays and compare readings to specifications to detect malfunctions.
    • Enter commands or load control media, such as tapes, cards, or disks, into machine controllers to retrieve programmed instructions.
    • Modify cutting programs to account for problems encountered during operation and save modified programs.
    • Calculate machine speed and feed ratios and the size and position of cuts.
    • Adjust machine feed and speed, change cutting tools, or adjust machine controls when automatic programming is faulty or if machines malfunction.
    • Lift workpieces to machines manually or with hoists or cranes.
    • Stack or load finished items or place items on conveyor systems.
    • Control coolant systems.
    • Maintain machines and remove and replace broken or worn machine tools, using hand tools.
    • Confer with supervisors or programmers to resolve machine malfunctions or production errors or to obtain approval to continue production.
    • Implement changes to machine programs and enter new specifications, using computers.
    • Set up future jobs while machines are operating.
    • Clean machines, tooling, or parts, using solvents or solutions and rags.
    • Input initial part dimensions into machine control panels.
    • Write simple programs for computer-controlled machine tools.
    • Lay out and mark areas of parts to be shot-peened and fill hoppers with shot.
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