Fixture and method for shanking rock bits

Details Fixture and method for shanking rock bits Fixture and method for shanking rock bits

B - Operations, Transporting

21

K

76/21

B21K 5/02 (2006.01) B23B 23/04 (2006.01) B23B 31/16 (2006.01)

Patent

CA 1238804

ABSTRACT OF THE DISCLOSURE A method for shanking a rock bit utilizing a shank locator and a cone locator, each with tapered surfaces to engage respectively the tail stock of a lathe and the cones of a rock bit, to accurately align the body and the cones of the bit concentric with the design centerline of the bit. The lathe and cone locators each have interior conical surfaces to assure accurate, coaxial alignment of the shank end and the cone end of the bit. A compensating chuck is used to grip the cone end of the bit body and firmly hold the normally uneven surfaces while the threads are being machined.

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