CNC Mill Programmer (Computer Numerical Control Mill Programmer)
Computer Numerically Controlled Tool ProgrammersDescription
Develop and optimize CNC milling programs to machine parts to specification using CAM software and G-code; collaborate on tooling, fixturing, and setups; run simulations and prove-outs; and support operators and maintenance as needed.
- • Determine milling operation sequences and select end mills, face mills, drills, and tooling to meet specifications.
- • Analyze job orders, blueprints, and CAD models to define dimensions, tolerances, spindle speeds, and feed rates.
- • Define work offsets and coordinate systems; compute toolpaths, hole patterns, angles, radii, and contours.
- • Create 2D/3D toolpaths (roughing, finishing, pocketing, drilling, tapping) in CAM for 3- to 5-axis mills.
- • Write and post-process G-code and transfer programs to machine controllers via DNC or network.
- • Run simulations and verification to detect collisions, gouges, and over-travel.
- • Conduct first-article prove-outs on mills and adjust programs and parameters to meet specifications.
- • Revise and debug mill programs to eliminate errors and retest to confirm corrections.
- • Optimize cycle time, surface finish, and tool life by refining toolpaths, stepovers, depths of cut, and cutting data.
- • Prepare setup sheets, tool lists, and workholding instructions for operators.
- • Manage program files, revisions, posts, and tool libraries within CAM and document control systems.
- • Verify G-code, tool lists, and outputs against engineering drawings and GD&T requirements.
- • Group milling jobs and standardize tooling to reduce changeovers and maximize material and fixture utilization.
- • Input or import hole coordinates, patterns, and canned cycles into CAM and controller memory.
- • Perform or coordinate preventive maintenance checks and minor adjustments on milling centers.
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Advanced Manufacturing
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Last reviewed: Jan 2026
