Computer Numerically Controlled Tool Operators: Career & Application Guide

What do computer numerically controlled tool operators do?

Operate computer-controlled tools, machines, or robots to machine or process parts, tools, or other work pieces made of metal, plastic, wood, stone, or other materials. May also set up and maintain equipment.

This describes a U.S. occupation, not a live vacancy. Individual employers may use different titles and requirements.

Job titles to recognize in your search

O*NET reports these titles for this occupation. Compare the responsibilities in each posting before treating titles as equivalent.

CNC Gear Operator (Computer Numerical Control Gear Operator)
CNC Lathe Operator (Computer Numerical Control Lathe Operator)
CNC Machine Operator (Computer Numerical Control Machine Operator)
CNC Machinist (Computer Numerical Control Machinist)
CNC Mill Operator (Computer Numerical Control Mill Operator)
CNC Operator (Computer Numerical Control Operator)
CNC Set Up Operator (Computer Numerical Control Set Up Operator)
Machine Operator

Core tasks to compare with a job posting

Measure dimensions of finished workpieces to ensure conformance to specifications, using precision measuring instruments, templates, and fixtures.
Set up and operate computer-controlled machines or robots to perform one or more machine functions on metal or plastic workpieces.
Mount, install, align, and secure tools, attachments, fixtures, and workpieces on machines, using hand tools and precision measuring instruments.
Review program specifications or blueprints to determine and set machine operations and sequencing, finished workpiece dimensions, or numerical control sequences.
Stop machines to remove finished workpieces or to change tooling, setup, or workpiece placement, according to required machining 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.
Implement changes to machine programs, and enter new specifications, using computers.
Calculate machine speed and feed ratios and the size and position of cuts.
Transfer commands from servers to computer numerical control (CNC) modules, using computer network links.
Remove and replace dull cutting tools.

Prepare an application for this occupation

Check the employer’s requirements, location, schedule and any licenses against your situation.
Choose two or three tasks above that match the posting and your actual experience.
Build a resume evidence worksheet using the skills and software relevant to that employer.
Practice explaining your contribution, decisions and results before an interview.

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