THREAD CUTTER HEAD Russian patent published in 2012 - IPC B23F21/12 B23F21/24 

FIELD: process engineering.

SUBSTANCE: proposed cutter head consists of two half-heads in radial grooves of which cutters are mounted in two planes at the distance equal to length of common normal line to form sector free of cutters for teethe segmentation. To up the quality of cut gear wheels by decreasing error in their profile, cutters forming tooth profile from tip to root are fitted in half-head with monotonically increasing pitch while cutters forming tooth profile from root to tip are arranged therein with monotonically decreasing pitch.

EFFECT: higher quality of tooth cutting.

2 dwg