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A Special Comprehensive Finishing Broach for Improving the Machining Quality of Ultra-Large Tenon and Groove of Fan Disk

A technology of processing quality and fine broaching, which is applied in broaching tools, metal processing equipment, broaching machines, etc., can solve problems such as non-smooth transfer of tenon-groove profiles, affecting the processing quality of parts, and large tenon and groove of fan discs, etc., to achieve Avoid the phenomenon of non-smooth transfer, high pass rate, and avoid the effect of connecting knife marks

Active Publication Date: 2020-03-31
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the large and complicated tenon and groove of the fan disk, the broaching condition is poor. According to the traditional process, it is formed by combining multiple broaches. Tool mark, tenon-groove profile transition is not smooth, and after broaching, the import and export tolerance of the part is 0.06mm (the design of the part requires that the tolerance of the import and export is not greater than 0.02mm), and the tolerance can only be reported, which affects the processing quality of the part

Method used

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  • A Special Comprehensive Finishing Broach for Improving the Machining Quality of Ultra-Large Tenon and Groove of Fan Disk
  • A Special Comprehensive Finishing Broach for Improving the Machining Quality of Ultra-Large Tenon and Groove of Fan Disk
  • A Special Comprehensive Finishing Broach for Improving the Machining Quality of Ultra-Large Tenon and Groove of Fan Disk

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-Figure 5 As described above, a special comprehensive finishing broach for improving the processing quality of super large mortise grooves of fan disks, the comprehensive finishing broach is composed of three parts: the connecting part of the tool holder 1, the neck of the broach 2 and the teeth 3 from bottom to top. The connecting part 1 of the tool holder is connected to the high-speed broaching machine tool box through a pressing block, and the knife teeth 3 are composed of odd-numbered knife teeth 4 and even-numbered knife teeth 5, and the odd-numbered knife teeth 4 and the even-numbered knife teeth 5 are arranged alternately, and the odd-numbered knife teeth Teeth 4 and even teeth 5 are alternately arranged to form wheel cutting for the entire tongue-and-groove profile, so as to reduce the cutting area. The role of s...

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Abstract

The invention discloses a special comprehensive fine broaching tool for improving the machining quality of a fan disc ultra-large mortise. The comprehensive fine broaching tool is sequentially composed of a tool base connecting part, a broaching tool neck and tool teeth from bottom to top. The tool base connecting part is connected with a high-speed broaching machine tool box through a pressing block. The tool teeth are composed of odd-number tool teeth and even-number tool teeth, and the odd-number tool teeth and the even-number tool teeth are alternately arranged. According to the comprehensive fine broaching tool, machining of the whole fan disc mortise profile can be finished at a time, operation is simple and convenient, the one-time machining qualification rate of products is high, the machining precision can reach 0.005 mm, surface roughness Ra0.4 is achieved, and the phenomenon that connecting tool marks happen to the bottom of the mortise is avoided; and mortise profile smooththrough connection is achieved, and the component inlet and outlet precision can reach 0.01-0.02 mm after broaching tooling.

Description

technical field [0001] The invention belongs to the technical field of broach manufacturing and engine wheel disc tenon and groove processing, and in particular relates to a special comprehensive fine broach for improving the processing quality of super large tenon and groove of fan discs. Background technique [0002] The fan disc of the aero-engine is made of titanium alloy. The outer diameter of the part is > Φ600mm, the axial length is > 200mm, and the diameter of the forging is > Φ700mm. At the same time, the mortise and groove size of the fan disk parts is large, the precision is high, the shape of the mortise and groove is complex, the surface accuracy is twice as high as that of ordinary military aircraft products, the broaching length is long (>100mm) and the broaching thickness is stepped, and the broaching depth is deep (>100mm) ), which is a typical large depth of cut, long cantilever, and high-precision tongue and groove broaching. [0003] Due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23D43/00
CPCB23D43/00
Inventor 刘健李之超宋子明刘权王腾峤
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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