Three-cone drill bit palm reference plane, hole processing fixture

Abstract

The invention relates to a datum plane and hole processing clamp for tricone bit legs. A blowhole positioning seat and a leg tip positioning component are relatively arranged in front and back. A clamping arm is arranged on the right side of the blowhole positioning seat, and a support screw is arranged on the left side of the blowhole positioning seat. A pressing block is arranged on the left side of the support screw, and bit legs are positioned on the support screw, the blowhole positioning seat and the leg tip positioning component. Leg tip support positioning points used for limiting the rotational degree of freedom of the bit legs on the X direction are arranged on the blowhole positioning seat and positioned at the non-trimming parts of the bit legs. Positioning points used for limiting the moving degree of freedom of the bit legs on the X direction and positioned at the non-trimming parts of the bit legs. The clamping arm is used for straining the root of a shaft head of each bit leg in a contacting manner, the support screw is used for supporting the front end part of each bit leg, and the pressing head of the pressing block is used for being pressed in a pulp hole in the end surface of a screw thread at the front end part of each bit leg. The positioning points completely avoid the trimming part of each bit leg, and the influence of the residual trimming of a bit leg forge piece on datum plane and hole processing of the bit legs is solved.

Description

Technical field [0001] The invention relates to a tricone drill bit tooth palm reference surface and a hole processing fixture. Background technique [0002] The datum plane and hole of the tooth palm are the first process of tooth palm processing, and at the same time are the positioning reference for the subsequent processes of the tooth palm. Such as Figure 1a , 1b As shown, the centerline A of the reference hole of the palm and the centerline B of the reference surface of the palm. [0003] The problems caused by the current positioning method are: 1) the amount of milling on both sides of the base surface of the tooth palm is uneven; 2) it is difficult to ensure the consistency of the position of the reference hole. Summary of the invention [0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a tri-cone drill bit palm reference surface and hole processing fixture to meet the uniform milling of the palm reference surface and...

AI Technical Summary

Problems solved by technology

[0003] The problems caused by the current positioning method are: 1) The amount of milling on both sides of the palm reference plane is uneven; 2) It is difficult to ensure the consistency of the reference hole position

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