Method of and machine for grinding internal threads

Details Method of and machine for grinding internal threads Method of and machine for grinding internal threads

1987-07-08

1989-08-29

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

B24B 100

Patent

active

048605018

ABSTRACT:
The internal thread of a rotary workpiece, especially a ball thread, is ground with a CBN grinding wheel whose axis makes with the axis of the workpiece a grinding angle smaller than the lead angle of the thread to be ground. The profile of the grinding wheel is thereupon corrected by a diamond profiling roll whose axis makes with the axes of the grinding wheel an angle larger than the lead angle.

REFERENCES:
patent: 2981038 (1961-04-01), Flanders
patent: 3728823 (1973-04-01), Tomita
patent: 4557078 (1985-12-01), Brill

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