銅

銅の製作ガイドライン

工具の選定：
Copper is “sticky.” We use highly polished carbide tools with sharp, positive rake angles. This helps shear the metal cleanly rather than pushing it, preventing Built-Up Edge (BUE) which ruins surface finish.

Workholding:
Because copper is ductile and heavy, it can deform under clamping pressure. We use custom soft jaws or vacuum fixtures to hold parts securely without leaving clamp marks or distorting the geometry.

Feeds & Speeds:
We optimize speeds to avoid excessive heat which can make copper “gummy.” Aggressive feed rates are often used to break chips, which otherwise tend to be long and stringy.

Drilling Deep Holes:
Drilling copper requires “peck drilling” cycles to clear long chips. We use high-pressure coolant to flush chips out, preventing them from jamming and breaking the drill.