公开(公告)号：EP0167473A1

公开(公告)日：1986-01-08

申请号：EP85630100.7

申请日：1985-06-27

Applicant: HUGHES TOOL COMPANY-USA

Inventor： Atkinson, Gerald Oliver

IPC: B23C3/00 ,  B21K5/02 ,  B23K31/00

CPC classification number: B23B23/04 ,  B23B31/16275 ,  Y10T29/49899 ,  Y10T82/10 ,  Y10T279/26 ,  Y10T409/300112

Abstract: A method for shanking a rock bit (15) utilizing a shank locator (21) and a cone locator (23), each with tapered surfaces to engage respectively the tail stock of a lathe and the cones (17) of a rock bit (15), to accurately align the body and the cones (17) of the bit (15) 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 (13) and the cone end of the bit (15). 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.

公开(公告)号：EP0167473B1

公开(公告)日：1988-01-20

申请号：EP85630100.7

申请日：1985-06-27

Applicant: HUGHES TOOL COMPANY-USA

Inventor： Atkinson, Gerald Oliver

IPC: B23C3/00 ,  B21K5/02 ,  B23K31/00

CPC classification number: B23B23/04 ,  B23B31/16275 ,  Y10T29/49899 ,  Y10T82/10 ,  Y10T279/26 ,  Y10T409/300112