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Bushing closing-up processing method

A processing method and bushing technology, which are applied in the field of small load-bearing lock bushing closing processing, can solve problems such as lock pin squeezing, and achieve the effect of good practicability

Inactive Publication Date: 2015-05-20
SHENYANG AIRCRAFT CORP
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  • Abstract
  • Description
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Problems solved by technology

[0003] The purpose of the present invention is to propose a processing method for bushing closing, changing the one-time closing forming to three-time closing forming, so as to solve the problem that the bushing is easy to squeeze the lock pin to death in the traditional method
[0005] The beneficial effect of the present invention is: simple and easy to implement, good practicability; effectively solves the problem that the bush squeezes the locking pin to death

Method used

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Embodiment Construction

[0009] Attached below Figure 1~3 To further describe the present invention, one of the main components of the bearing lock is the upper lock body structure, such as figure 1 As shown, the end of the bushing 1 is required to be closed during assembly (such as figure 2 center R), so that the spring 3 is enclosed in the bushing 1, and the assembly of the lock body is completed; now, rollers are generally used on lathes for closing processing, and the processing method of one-time closing forming is adopted, and the lock pin 2 is easy to be closed during forming. squeezed, such as figure 2 shown.

[0010] The present invention is to change the one-time closing forming into the three-time closing forming processing method, and its specific implementation steps are shown in image 3 (spring 3 is not shown); this scheme makes bushing 1 have a process of pre-deformation, re-deformation, and final deformation in the closing-up forming process. In the pre-deformation stage, the o...

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Abstract

The invention provides a bushing closing-up processing method in which one-step closing-up formation is changed into tri-closing up formation. The bushing closing-up processing method is characterized by mainly comprising three steps of pre-deformation, re-deformation and final deformation. The bushing closing-up processing method is simple and feasible, has good practicability and effectively solves the problem that a lock pin is tightly squeezed by a bushing.

Description

technical field [0001] The invention relates to the processing of a small force-bearing device, in particular to a method for processing the closing of a small force-bearing lock bush. Background technique [0002] The connection between the aircraft electronic cabin cover and the fuselage mainly adopts a small load-bearing lock with a closing bush. One of the main components of the load-bearing lock is the lock body structure, such as figure 1 As shown; during assembly, it is required to process the end of the bushing 1 ( figure 2 middle R), so that the spring 3 is enclosed in the bushing 1, and the assembly of the lock body is completed; now, rollers are generally used on lathes for closing processing. It is made of soft Cr17Mh9Ni4N stainless steel material, and the wall thickness of the tail end is relatively thin, so it is easy to squeeze the lock pin 2 to death when the closing is formed, causing the bushing 1 to be scrapped and increasing the manufacturing cost. Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D39/00
Inventor 孙鹏张振杨波熊占国
Owner SHENYANG AIRCRAFT CORP
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