Member Avatar for pseudorandom21

It has occurred to me that there are very many factories in my area that use CNC (Computer Numerical Controlled) Lathes and other computer controller machinery.

Is the operation of this machinery typically a job for a software programmer or does it require specialized knowledge?

Is it worth doing with a degree?

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: short answer — running a CNC lathe is usually a skilled trades role, while writing advanced control or automation software is an engineering job. and touched on that split; here is a clearer view of the roles and what to learn if pursuing this work.

Operators/setters focus on setups, fixturing, tooling, measuring, and keeping machines running reliably. CNC programmers (often called CAM programmers) translate part geometry and process requirements into toolpaths and use a post‑processor to produce controller code. Experienced machinists frequently combine both skill sets. Formal CS degrees are useful for custom automation, post‑processor coding, or controls work, but most shops hire people trained through technical schools, apprenticeships, or on‑the‑job experience. See the U.S. outlook and typical training paths for machinists for context: BLS — Machinists and Tool and Die Makers.

Practical starting points: learn blueprint reading, GD&T, shop math, feeds and speeds, tool selection, and basic metrology. Get hands‑on with a CAM package (examples include Fusion 360 and Mastercam) and a basic understanding of G‑code syntax and controller families. Short courses, community college certificates, and NIMS credentials accelerate hiring: NIMS Certifications. For CAM fundamentals and simulations, vendor learning resources help reduce costly first‑part mistakes: Autodesk Fusion 360 and introductory material on G‑code.

Quick, practical tips: always dry‑run new code in simulation or with the spindle stopped; verify work offsets and tool lengths; inspect a first piece and adjust feeds/speeds before a production run; keep tooling and chip control in mind to avoid chatter and rapid tool wear. Safety, proper guarding, and correct workholding are nonnegotiable.

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Member Avatar for vadriaan

If you need a Computer Science degree to operate a CNC lathe, no lathe would ever be sold. If I were to write the system to control a lathe I would make it "money-see-monkey-do", like generating a keystroke macro. The operator would make a cut and the machine would learn and make a 1000 more exactly like the first one.

Member Avatar for jwenting

It's mostly a job for the operators or product designers to make the scripts for those machines.
I wouldn't be surprised if software like AutoCAD can generate the scripts for the more common brands for you based on the design files for parts.

As Vadriaan says, they're mostly simple languages/tools that do little more than allowing the user to put in sequences of movement and tool use.
Something akin to

move left 10.0
move up 1.01
select head 100
activate head
down head
move up 2.05
up head
deactivate head
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