Broach manufacturing method

Details Broach manufacturing method Broach manufacturing method

1987-07-24

1989-07-25

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

51288, B21K 502

Patent

active

048502537

ABSTRACT:
A broach or other tool having a plurality of cutting teeth along its length is produced by simultaneously grinding a plurality of preformed cutting teeth having overside dimensions, such as oversize outer diameters, using a rotating dressed generally cylindrical grinding wheel engaging the oversize teeth along a length of the broach preform to impart reduced final print dimensions such as final outer diameters to the oversize teeth. Outer diameters which increase from one tooth to the next and outer diameters which remain constant for several adjacent teeth can be simultaneously ground. Different clearance angles can also be imparted during the grinding operation.

REFERENCES:
patent: 2436325 (1948-02-01), Penny
patent: 2624159 (1953-01-01), Balsiger
patent: 3155086 (1964-11-01), Ornehage
patent: 4498361 (1985-02-01), Grace

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