荒仕上げ

定義

大きな切削量で材料を除去する段階。

フロントマターの定義を基準にし、段取り・加工・検査で同じ意味として扱います。

公式/ルール

• 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.

代表的な範囲

• 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.

現場シナリオ

• 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.

よくある問題/トラブルシュート

• 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.

関連ツール

• Feed Speed Calculator
• Machining Time Estimator