Computer-Controlled Machine Tool Operators, Metal and Plastic

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.

Remove and replace dull cutting tools.

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.

Input initial part dimensions into machine control panels.

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.

Write simple programs for computer-controlled machine tools.

Set up future jobs while machines are operating.

Clean machines, tooling, or parts, using solvents or solutions and rags.

Lay out and mark areas of parts to be shot-peened and fill hoppers with shot.

Examine electronic components for defects or completeness of laser-beam trimming, using microscopes.