Mathematical determination of the cutting specifications for thread milling
| MATHEMATICAL DETERMINATION OF THE CUTTING SPECIFICATIONS FOR THREAD MILLING | ||
| Description | Formula | Definition |
| ONLY FOR MILLING | n = Spindle rotation speed vc = Cutting speed d = Milling cutter diameter D = Internal thread diameter vf = Feed rate at contour vfm = Feed rate at centre Ueint= Programmed immersion feed rate fz= Feed rate per tooth z = Milling cutter cutting rate |
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| Milling external contour | Vfm = Vf = · (D + d) Vf = D · Vfm | |
| D (D+d) | ||
| Milling internal contour | Vfm = Vf = · (D - d) Vf = D · Vfm | |
| D (D-d) | ||
| Straight immersion | Ueint = 0,25 · Vfm | |
| Immerse in the circular arc | Ueint = Vfm | |