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Pin assembly and assembling process thereof

An assembly process and assembly technology, applied in the field of fastening parts, can solve the problems of shortening the service life, unable to load materials, affecting the efficiency of enterprises, etc., to achieve the effect of improving efficiency, avoiding breakage failure, and improving strength

Pending Publication Date: 2021-08-13
无锡市沃德金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the assembly process of the straight groove type elastic cylindrical pin, the compression assembly is carried out by shrinking the width of the straight groove slot. Since the stress on this type of cylindrical pin is concentrated in the area opposite to the straight groove, the The combination of press-fit stress and stress concentration during the use of parts after assembly will reduce the fatigue life of this type of straight grooved elastic cylindrical pin, resulting in premature fracture failure of this type of straight grooved cylindrical pin during use, shortening the its service life
[0003] In addition, because the width of the straight groove of the straight grooved elastic pin is greater than the wall thickness of the pin body, it is easy for two straight grooved elastic pins to nest with each other using the straight groove. There will be a problem that the feeding equipment cannot be loaded, which greatly affects the efficiency of the enterprise
[0004] In a specific assembly environment, the hole diameter of the counterpart that is assembled with the straight-groove elastic cylindrical pin cannot be enlarged, but the working conditions that still require greater strength need to increase the wall thickness of the cylindrical pin to increase strength, but increasing the wall thickness will cause After the counter piece is assembled with the straight grooved elastic cylindrical pin, its straight groove notch is closed, and it cannot meet the customer's strength requirements

Method used

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  • Pin assembly and assembling process thereof
  • Pin assembly and assembling process thereof
  • Pin assembly and assembling process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Please refer to figure 1 and figure 2 , the pin assembly includes an outer pin 1 and an inner pin 2 connected to the outer pin 1 .

[0038] Below first describe the concrete structure of export part 1 as follows:

[0039] Please refer to figure 1 and image 3 , the outer pin member 1 includes a first pin body 100 having a first hole 102, preferably, the first pin body 100 is cylindrical, wherein the first hole 102 is along the axis of the first pin body 100 To open, a first slot 101 is opened on the first pin body 100 .

[0040] Further, please continue to refer to figure 1 and image 3 , the first groove 101 communicates with the first hole 102, the first groove 101 is opened along the axial direction of the first pin body 100, please refer to figure 2 , and the groove length of the first groove 101 is equal to the length of the first pin body 100 .

[0041] Further, please continue to refer to figure 1 , figure 2 and image 3 , the first groove 101 has t...

Embodiment 2

[0064] Please refer to Figure 6 The structure and manufacturing process of the second embodiment are mostly the same as those of the first embodiment. The second slot 201 partially overlaps with the first slot 101 . Specifically, the second groove 201 has a groove width of 1 / 3-2 / 3 that coincides with the first groove 101 of the outer pin 1, wherein the groove width of the second groove 201 specifically refers to the groove width close to the inner pin 2. At the outer diameter of , the distance L between two adjacent second groove walls 2011 1 . In the above case, the first groove 101 and part of the second groove 201 have overlapping parts, so that the first groove 101 is partially closed, so when it contacts with other cylindrical pins with grooves, it cannot be nested, thereby avoiding the automatic assembly process The problem of low assembly efficiency caused by product nesting.

Embodiment 3

[0066] Please refer to Figure 7 The structure and manufacturing process of the third embodiment are mostly the same as those of the first embodiment, except that the structure is different, specifically, the extension lines of the two adjacent first groove walls 101 in the outer pin 1 do not have intersecting parts, so that The first groove 101 is formed as a straight groove, and the second groove 201 of the inner pin 2 is also a straight groove, and the groove width L of the first groove 101 is 2 Greater than the groove width L of the second groove 201 3 By making the groove width of the second groove 201 smaller than the groove width of the first groove 101, even when the second groove 201 of the inner pin 2 is rotated to the first groove 101, other cylindrical pins can be prevented from nesting with the outer pin 1.

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Abstract

The invention relates to a pin assembly and an assembling process thereof. The pin assembly comprises an outer pin piece and an inner pin piece. The outer pin piece comprises a first pin body with a first hole, and a first groove is formed in the first pin body. The inner pin piece is connected with the outer pin piece through the first hole, the inner pin piece comprises a second pin body with a second hole, and a second groove is formed in the second pin body. According to the pin assembly and the assembling process thereof, the outer pin piece and the inner pin piece are connected and combined to form the pin assembly, and thus press-fitting stress generated when the outer pin piece and the inner pin piece are assembled and stress generated during use after assembling are distributed in the overall structure of the pin assembly, so that the problem that stress is concentrated at a certain point in a traditional structure is solved, and the premature fracture fault in the assembling and using processes is avoided.

Description

technical field [0001] The invention relates to the technical field of fastening parts, in particular to a pin assembly and its assembly process. Background technique [0002] At present, in the assembly process of the straight groove type elastic cylindrical pin, the compression assembly is carried out by shrinking the width of the straight groove slot. Since the stress on this type of cylindrical pin is concentrated in the area opposite to the straight groove, the The combination of press-fit stress and stress concentration during the use of parts after assembly will reduce the fatigue life of this type of straight grooved elastic cylindrical pin, resulting in premature fracture failure of this type of straight grooved cylindrical pin during use, shortening the its service life. [0003] In addition, because the width of the straight groove of the straight grooved elastic pin is greater than the wall thickness of the pin body, it is easy for two straight grooved elastic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B19/02B23P19/02
CPCB23P19/02F16B19/002F16B19/02F16B2019/006
Inventor 戴朱伟
Owner 无锡市沃德金属制品有限公司
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