Rough Machining

Stage that removes material with large cutting parameters.

Definition

Stage that removes material with large cutting parameters.

Use the frontmatter definition as the controlled meaning for setup, machining, and inspection decisions.

Rough machining prioritizes stable material removal and leaves a controlled allowance for later finishing.
Increase removal only after chip evacuation, spindle load, and workholding stability remain predictable.

Leave a stable allowance for finishing instead of consuming the whole stock in one aggressive roughing pass.
For thin walls or weak fixtures, reduce radial engagement before raising feed or axial depth.

Open up chip evacuation and spindle load margin before increasing stock removal on the next lot.
Split roughing into predictable stages when the workholding or part stiffness changes across the program.

If chatter rises during roughing, reduce engagement or improve support before cutting speed is increased again.
If roughing leaves unpredictable stock, review tool deflection, wear, and path overlap before blaming finishing.

Fully aligned

Roughing-cycle concepts used to remove stock efficiently in turning.

FANUC G71 has no one-to-one SINUMERIK term in this glossary; ShopTurn is the closest process-level entry.

ISO / Generic

FANUC

SINUMERIK