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Hexagonal broach

A technology of cutting edge and handle, applied in the field of hexagonal broach, can solve the problems of rapid cutting edge wear, short service life and low cutting efficiency, so as to reduce the force on the cutting edge, prolong the service life, and improve the cutting efficiency. The effect of efficiency

Inactive Publication Date: 2014-02-05
WUXI YUTIAN PRECISION TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the machine tool pulls the tool, the right-angled edge of the cutting tooth cuts the part, and the cutting resistance is relatively large. The driving force of the tool needs to be large to complete the cutting action. Not only the cutting efficiency is not high, but also the edge of the tool wears quickly. not long life

Method used

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  • Hexagonal broach
  • Hexagonal broach

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Embodiment Construction

[0016] The technical solutions of the present invention will be described below in conjunction with the accompanying drawings and embodiments.

[0017] like figure 1 and figure 2 As shown, the present invention is a hexagonal broach, comprising a handle 10 and a blade 20, the handle 10 is cylindrical, the blade 20 is a hexagonal prism, and the handle 10 and the blade 20 are coaxial , The outer end surface of the blade 20 has a spherical recessed portion 30 , and a cutting edge 40 is formed at the joint between the concave portion 30 and the end surface of the blade 20 . In the hexagonal broaches of the present invention, a spherical recessed portion 30 is designed on the outer end surface of the blade 20, and a cutting edge 40 is formed at the junction of the concave portion 30 and the end surface of the blade 20, so that the cutting edge 40 is formed from a plane to an arc surface. Combined with the structure, the end of the cutting edge 40 is an acute angle. Compared with...

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Abstract

The invention provides a hexagonal broach. The hexagonal broach comprises a broach handle and a blade, wherein the broach handle is cylindrical, the blade is in a shape of a hexagonal prism, and the broach handle is coaxial with the blade; a hemispherical recess part is arranged on the outer end surface of the blade, and a blade notch is formed in the combined part of the recess part and the end surface of the blade. The hexagonal broach has the advantages of high cutting efficiency and long service life.

Description

technical field [0001] The invention belongs to the field of machining, and in particular relates to a hexagonal broach. Background technique [0002] The broach is a tool used for broaching and forming. It is often used in batch and mass production to process round holes, spline holes, keyways, planes and forming surfaces. The productivity is very high, and the hexagonal broach is one of them. It is specially used for processing hexagonal outer surface or inner hexagonal hole. Although there are many types of broaches, their structural composition is similar. For example, the structure of an ordinary round hole broach is composed of: the handle, which is used to clamp the broach and transmit power; the neck, which acts as a connection; the transition cone, which introduces the leading part of the broach into the workpiece; the leading part, which acts as a guide to prevent The broach is skewed; the cutting tooth, which completes the cutting work, is composed of a rough cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D43/00
Inventor 朱胜雷
Owner WUXI YUTIAN PRECISION TOOL