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Short-end thread rolling wheel

A thread rolling wheel and main body technology, which is applied in the field of short-tail thread rolling wheels, can solve problems such as high cost of thread rolling wheels, large structural size of thread rolling wheels, and weak initial part of thread teeth, etc., and achieve reduction in processing unit cost, Effects of life extension and weight reduction

Inactive Publication Date: 2017-12-19
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing ordinary titanium alloy bolt thread rolling wheel has a large structure size. Since the titanium alloy bolts are processed by thread rolling wheel, the chamfer of the leading part in the design structure of the thread rolling wheel in the prior art is too large, and the The starting part of the tooth will be very weak, which will seriously affect the service life of the thread rolling wheel
The number of products that can be processed by each thread rolling wheel is small, only 24,000 products can be processed, the purchase cost of thread rolling wheel is high, and the cost of thread rolling wheel allocated to a single piece of titanium alloy fastener is also high

Method used

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  • Short-end thread rolling wheel
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  • Short-end thread rolling wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1-5 As shown, a short thread rolling wheel includes a thread rolling wheel body 1, a thread rolling wheel guide 2 and a thread head guide 3 are arranged on the thread rolling wheel body 1, and the thread rolling wheel on the thread rolling wheel body 1 The guide part 2 is provided with a chamfer, and each thread start guide part 3 on the thread rolling wheel body 1 is provided with a wedge-shaped surface 4 inclined relative to the end surface.

Embodiment 2

[0026] Such as Figure 1-5 As shown, a short thread rolling wheel includes a thread rolling wheel body 1, a thread rolling wheel guide 2 and a thread head guide 3 are arranged on the thread rolling wheel body 1, and the thread rolling wheel on the thread rolling wheel body 1 The guide part 2 is provided with a chamfer, the chamfer is 50°-65°, and each thread head guide part 3 on the thread rolling wheel body 1 is provided with a wedge-shaped surface 4 inclined relative to the end surface.

Embodiment 3

[0028] Such as Figure 1-5 As shown, a short thread rolling wheel includes a thread rolling wheel body 1, a thread rolling wheel guide 2 and a thread head guide 3 are arranged on the thread rolling wheel body 1, and the thread rolling wheel on the thread rolling wheel body 1 The guide part 2 is provided with a chamfer, the chamfer is 60°, and the chamfer is the same as the thread angle. On the thread rolling wheel body 1, each thread thread head guide part 3 is provided with a wedge-shaped surface 4 inclined relative to the end surface. The length of the inclined surface of the surface 4 along the circumferential direction of the thread rolling wheel matches the specifications of the threads, and the wedge-shaped surface 4 is inclined at 45° relative to the end surface of the thread rolling wheel.

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Abstract

The invention discloses a short-end thread rolling wheel. The short-end thread rolling wheel is characterized by comprising a thread rolling wheel body, a thread rolling wheel guiding part and thread tooth head guiding parts are arranged on the thread rolling wheel body, the thread rolling wheel guiding part on the thread rolling wheel body is provided with a chamfer, and a wedge-shaped surface inclined relative to the end surface of the thread rolling wheel body is arranged on each thread tooth head guiding part on the thread rolling wheel body. According to the technical scheme, the thread length of a machined bolt is shortened under the condition of the same strength grade, the weight of the bolt is reduced, the height of a machined high-locking nut matched with the end length of a thread is also reduced, the weight is remarkably reduced after installation, compared with the common bolt, the weight is averagely reduced by 13%, the service life of the thread rolling wheel is prolonged, and the cost for machining a single piece is reduced.

Description

technical field [0001] The invention relates to the technical field of aircraft fastening devices, in particular to a short tail thread rolling wheel. Background technique [0002] Existing large aircrafts each use millions of fasteners. Therefore, reducing the weight of the airframe has become one of the research directions. The effect needs to be improved. [0003] The existing ordinary titanium alloy bolt thread rolling wheel has a large structure size. Since the titanium alloy bolts are processed by thread rolling wheel, the chamfer of the leading part in the design structure of the thread rolling wheel in the prior art is too large, and the The starting part of the tooth will be very weak, which will seriously affect the service life of the thread rolling wheel. The number of products that can be processed by each thread rolling wheel is small, only 24,000 products can be processed, the purchase cost of thread rolling wheel is high, and the cost of thread rolling whee...

Claims

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Application Information

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IPC IPC(8): B21H3/04
CPCB21H3/042
Inventor 李伟强刘风雷张连清
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST