CNC Lathe Programmer (Computer Numerical Control Lathe Programmer)
Computer Numerically Controlled Tool ProgrammersDescription
Develop and optimize CNC lathe programs for turning centers to machine parts to specification; may also set up, prove out, and maintain equipment.
- • Determine the sequence of turning operations and select inserts, boring bars, drills, and workholding to achieve required geometry.
- • Revise and debug lathe programs to eliminate errors, then prove out and verify corrections on the machine.
- • Analyze job orders, blueprints, and GD&T to calculate dimensions, tool choices, spindle speeds, surface speeds, feeds, and depths of cut.
- • Establish work offsets and reference points; compute X/Z coordinates, tapers, chamfers, radii, and threading data.
- • Run simulations or supervised trial cuts to confirm programs, tooling, and machines produce parts within tolerance.
- • Compare program output and first-article results with specifications and drawings to verify accuracy.
- • Enter and adjust tool geometry, wear offsets, and nose radius compensation in the controller.
- • Write and edit G-code and M-code for CNC lathes or post-process CAM toolpaths for turning, drilling, grooving, threading, and parting.
- • Modify existing programs to improve cycle time, surface finish, and tool life.
- • Store, retrieve, and transfer programs, tool libraries, and graphics via the control or DNC.
- • Prepare geometric layouts and profiles in CAD/CAM to generate efficient lathe toolpaths.
- • Create setup sheets, tool lists, and chucking or jaw configurations to guide setups and operations.
- • Group jobs and plan bar stock, slug sizes, and cutoff allowances to maximize material use and minimize changeovers.
- • Design or specify soft jaws, mandrels, or collets and define safe clearances and rapid moves.
- • Perform preventative maintenance or minor repairs on lathes, turrets, bar feeders, and tool presetters.
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Last reviewed: Jan 2026
