Threading Technology – Clamping Technology 520

360 Thread Mills UNC UNF UN M MF NPSF Rp (BSPP) G W BSW, BSF NPT NPTF Rc (BSPT) STI BGF ZBGF GSF (Aero) GSF-Z GF(I), GF-Z GF-Vario-Z GF-H GF(I)-KEG ZGF(I) CIRC-GF Gigant FPC, FMC MoSys SELF-LOCK Accessories Tech. Info v c / f z Product Finder ~ Check Increase Decrease CLM Climb milling COM Conventional milling Thread milling in general Chattering, vibrations Bad surface quality on workpiece Excessive wear Chipped cutting edges Possible causes Solutions Cutting speed ~ ~ Feed per tooth ~ ~ Stability (workpiece/workpiece clamping) Stability (tool/machine) Protruding length (of tool) ~ Tool helix (spiral flutes) ~ ~ Concentricity ~ ~ ~ Coating (e.g. TIN, TICN) Milling process/program/programmed radius CLM CLM Work case (relation of tool/thread diameters) Tool change (worn tool) NC axis/path speed (computer) ~ ~ ~ ~ Drilling speed (lifting) Coolant pressure (exit bore) ~ ~ 4.6 Problems, possible causes and solutions in thread milling