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Assembly type broach

An assembled and blade technology, which is applied to broaches, broaching machines, metal processing equipment, etc., can solve the problems of difficult machining of carbide broaches, achieve the effects of reducing material costs, facilitating installation and disassembly, and improving precision

Active Publication Date: 2019-12-03
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the hard alloy broach is difficult to process in the prior art, the present invention provides an assembled broach, which improves the broaching quality and broaching efficiency, and also improves the service life of the broach

Method used

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.

[0038] refer to Figure 1-9 , an assembled broaches, including a cutter body 1, and a blade group installed on the top thereof.

[0039] Wherein, the top of the cutter body 1 is provided with a positioning groove 12 , and the blade group is installed in the positioning groove 12 along the axial direction of the positioning groove 12 .

[0040] The blade set includes a plurality of blades, which are installed in the positioning groove 12 in turn. Each blade includes a base and a forming part on its top. Fastening parts 5 are respectively arranged at both ends of the base, and the blades are fixed by the fastening parts 5. Connected to the positioning groove 12.

[0041] The number of blades is 2-6.

[0042] refer to image 3 , the cross-section of the positioning groove 12 is an L-sha...

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Abstract

According to the assembly type broach, a split structure is adopted, the broach body and the blade are machined separately, the machining difficulty of hard alloy is reduced, the machining precision of the broach is improved, and meanwhile the material cost is reduced; secondly, the blade group is mounted on the cutter body through the positioning groove; a positioning key is additionally arrangedbetween the blade group and the cutter body; axial and radial positioning of the blade group and the cutter body is achieved through the positioning groove and the positioning key, mounting and dismounting of the blades and the cutter body are also facilitated, the broach is simple in structure, low in manufacturing cost and convenient to use, and the hard alloy profile finish broach structure has extremely high popularization value in mortise broaching and blade tenon broaching of engine disc parts.

Description

technical field [0001] The invention relates to the design and manufacture technology of an aeroengine tool, in particular to an assembled broach. Background technique [0002] At present, the broaching of turbine discs and compressor discs of aero-engines is usually processed by high-speed steel broaches. With the upgrading of parts materials, the hardness of parts is getting higher and higher. The existing high-speed steel broaches When broaching parts, the wear is fast, and the surface quality and dimensional accuracy of the broaching parts of the parts are becoming more and more difficult to meet the process requirements of the parts. [0003] After research, it is found that cemented carbide is a better substitute material for broaches. It has been verified by use that the single broaching life of cemented carbide broaches is 3 to 4 times that of similar high-speed steel broaches, and the overall service life is longer than that of similar high-speed steel broaches. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D43/04
CPCB23D43/04
Inventor 张红霞文春锋雷再兴张恒耀林娜何花娟
Owner AECC AVIATION POWER CO LTD
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