Method for improving broaching precision of mortises in excircle of wheel disc part

A technology for parts and roulettes, which is applied in the field of improving the broaching accuracy of the external circular tongue and groove of roulette parts, can solve the problems of difficulty in guaranteeing the accuracy of the tongue and groove of the deformed parts, and achieve the effects of reducing the deformation amount, simplifying the operation and improving the dimensional accuracy.

Active Publication Date: 2014-05-07
AECC AVIATION POWER CO LTD
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Problems solved by technology

[0003] In order to overcome the above-mentioned defects in the prior art, the purpose of the present invention is to provide a method for improving the broaching accuracy of the outer circle tenon and groove of the roulette parts, which can effectively

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  • Method for improving broaching precision of mortises in excircle of wheel disc part
  • Method for improving broaching precision of mortises in excircle of wheel disc part
  • Method for improving broaching precision of mortises in excircle of wheel disc part

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[0019] The present invention will be further described in detail below in conjunction with specific drawings and embodiments, which is an explanation but not a limitation of the present invention.

[0020] The method of the present invention to improve the broaching accuracy of the outer circular tongue and groove of the wheel disc part adopts the design of the outer circular process table, which can increase the radial thickness of the clamp and enhance the rigidity. It adopts two (or three) angular positioning grooves. Clamping and broaching twice (or three times) to increase the circumferential positioning length of the clamp, further enhance the rigidity of the clamp, and complete the broaching of the tongue and groove in two (or three) batches:

[0021] If the number of tongue grooves on the outer circle of the roulette part to be processed is even, you can use the first angular positioning groove for positioning, first broach the odd-numbered tongue and groove, and then use th...

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Abstract

The invention discloses a method for improving the broaching precision of mortises in the excircle of a wheel disc part and belongs to the technical field of aero-engine part manufacturing. The adopted technical scheme is that the method comprises the following steps: installing an excircle process platform with a plurality of angular locating slots on the excircle of the to-be-processed wheel disc part; installing two angular locating slots in the excircle process platform if the number of the mortises in the excircle of the to-be-processed wheel disc part is an even number, and broaching the mortises of the wheel disc part in twice; installing three angular locating slots in the excircle process platform if the number of the mortises in the excircle of the to-be-processed wheel disc part is an add number, and broaching the mortises of the wheel disc part in three times. According to the method disclosed by the invention, the contact area between locating surfaces of the mortises of the part and an included angle is effectively increased, so that the stability of fixture positioning is enhanced. Meanwhile, the part angular displacement caused by an angular component generated by broaching is decomposed. The method is simple in operation and skillful in design. Through the method, the fixture rigidity can be greatly enhanced, the deformation of the broached part is reduced, and the dimensional precision of the part is improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing aero-engine parts, and in particular relates to a method for improving the broaching precision of the outer circle tenon and groove of a wheel disc part. Background technique [0002] In the process of broaching the outer circular tenon and groove of the traditional roulette parts, the positioning is carried out through the only axial datum, radial datum and angular datum, and the outer round tenon and groove are broached sequentially. This kind of processing technology has a simple structure of the part, and can ensure the broaching accuracy of the roulette part without affecting the rigid design of the positioning fixture. For parts with more complex structures, the roulette parts that limit the rigid design of the positioning fixture, after broaching the tenon and groove according to the conventional method, the area between the tenon and groove on the part is very small, and only a small...

Claims

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Application Information

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IPC IPC(8): B23D37/00B23D37/22
Inventor 汤婷婷常广利童宏伟黄宁强梁忠效穆涛肖飞吕满叶
Owner AECC AVIATION POWER CO LTD
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