Staggered-tooth three-edge broach

A technology of three-sided blade and staggered teeth, which is applied in the design and manufacture of aeroengine tools, can solve problems such as poor strength, thin thickness, and penetration of broaches, and achieve the effect of good quality and high promotion value

Pending Publication Date: 2022-02-15
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When broaching a small tenon and groove, the three-edge coplanar three-sided broach has the following problems: the depth of the chip pockets on both sides is not enough, and the thickness of the ribs at the bottom of the chip pockets is extremely thin, and may even penetrate, resulting in The broach strength is extremely poor, so it is impossible to broach small tenons and grooves

Method used

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  • Staggered-tooth three-edge broach
  • Staggered-tooth three-edge broach
  • Staggered-tooth three-edge broach

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Embodiment Construction

[0025] 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.

[0026] refer to Figure 1-7 , a staggered-tooth three-sided broach, including a cutter body, a plurality of side cutter teeth are respectively arranged on both axial sides of the broach, which are respectively a left cutter tooth 1 and a right cutter tooth 2, and two adjacent cutter teeth on the same side There are chip pockets 5 between the side teeth, and the chip pockets on both sides of the cutter body are arranged alternately along the axial direction of the cutter body, and the chip pockets on one side of the cutter body are located on the tooth back of the side cutter teeth on the other side of the cutter body 4, the top of the cutter body is provided with top cutter teeth 3.

[0027] The chip flutes on both sides of the cutter body are arranged alternately along the axial direct...

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Abstract

The invention discloses a staggered-tooth three-edge broach. The broach comprises a broach body, a plurality of side broach teeth are arranged on the two axial sides of the broach body respectively, chip containing grooves are formed between every two adjacent side broach teeth on the same side, the chip containing grooves in the two sides of the broach body are alternately formed in the axial direction of the broach body, and the problem that the broach body at the chip containing grooves is weak in that chip containing grooves in the two sides of the broach body are located in the same axial position of the broach body is avoided, so that the strength of the broach body can be improved by arranging the chip containing grooves in the two sides of the broach body in a staggered mode. The molded surface of a mortise broached by the three-edge broach is free of tool marks, and the surface quality of the mortise is good; and the cutter teeth on the two sides are of a staggered tooth structure, and it is guaranteed that each cutter tooth has enough chip containing space and enough strength and rigidity. The design structure solves the problem of poor strength of the small-surface mortise broach, and has extremely high popularization value in design and manufacturing of the small-surface mortise broach.

Description

technical field [0001] The invention belongs to the design and manufacture technology of aero-engine cutters, and in particular relates to a small tongue-and-groove broach for an aero-engine wheel. Background technique [0002] The tenon and groove of the aero-engine wheel are usually broached by broaching. Generally, the high-precision tenon and groove profile is not allowed to be connected, and it is broached by a single surface finishing broach. The existing three-sided edge broaching knife is composed of two side profile teeth and a top profile tooth. Cut a larger tongue and groove. When broaching a small tenon and groove, the three-edge coplanar three-sided broach has the following problems: the depth of the chip pockets on both sides is not enough, and the thickness of the ribs at the bottom of the chip pockets is extremely thin, and may even penetrate, resulting in The strength of the broach is extremely poor, so it cannot broach small tenons and grooves. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D43/00
CPCB23D43/00
Inventor 张红霞雷再兴林娜文春锋成福康张恒耀梁峤仝强
Owner AECC AVIATION POWER CO LTD
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