Design method for textured interference connecting surface group

A design method and surplus connection technology, which is applied in the direction of shrinkage connection, connection components, mechanical equipment, etc., can solve the problem of large stress concentration on the mating surface, and achieve the effect of improving contact stiffness, strength, and overall performance

Active Publication Date: 2018-11-23
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional interference connection has disadvantages such as large stress concentration at the edge of the mating surface

Method used

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  • Design method for textured interference connecting surface group
  • Design method for textured interference connecting surface group
  • Design method for textured interference connecting surface group

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Embodiment 1

[0032] The connection surface group composed of the outer circle of the pin shaft and the inner circle of the pin hole is the most common interference connection of mechanical equipment. The following is combined with the attached Figure 4 The present invention will be further described by taking a square textured pin shaft as an example.

[0033] In the present invention, a textured area 1 and an untextured area 2 are designed on the interference fit connection surface formed by the pin shaft and the pin hole.

[0034] The texture zone is only designed on the outer circular mating surface of the pin shaft (see Figure 4 )superior.

[0035] The textured area 1 is provided with square pits 3 .

[0036] The square pits 3 are arranged in rows and columns parallel to the axial direction of the pin axis (ie 0°).

[0037] The geometric parameters of the square pit 3 are: the side length is 10-500um, and the depth is 2-50um.

[0038] The distance between adjacent square pits in ...

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PUM

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Abstract

The invention discloses a design method for a textured interference connecting surface group. A connecting matching surface comprises a texture area and a non-texture area. The texture area is only designed on the outer circle matching surface of the connecting surface group, or is only designed on the inner circle matching surface of the connecting surface group, or is designed on the outer circle matching surface and the inner circle matching surface of the connecting surface group simultaneously. The texture area is designed with circular pits, square pits, diamond pits, elliptical pits, triangular pits or arbitrary combination of several pits. Pit textures are arranged parallel to the axial direction of the connecting face group or at a certain angle with the axial direction of the connecting face group in a row and column mode. According to the design method for the textured interference connecting surface group, the concave textures are designed on the matching surface of interference connection, the contact characteristic of the matching surface is changed, the binding force of the interference connection can be improved, and the comprehensive performance of the interferenceconnection is effectively improved.

Description

technical field [0001] The invention relates to a connection joint surface, in particular to a design method for a textured interference connection surface group. Background technique [0002] Interference connection is widely used in mechanical equipment because of its simple connection structure, good centering accuracy, high bearing capacity, and can withstand torque, axial force or the combined load of the two. There are mainly two types of interference fit connection: cylindrical surface interference fit connection and conical surface interference fit connection. The traditional interference connection has disadvantages such as large stress concentration at the edge of the mating surface. Contents of the invention [0003] The present invention aims at the deficiencies of the prior art, and aims at proposing a method for designing a textured interference connection surface group. By designing a concave texture on the interference connection mating surface, the contac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B4/00F16F15/02
CPCF16B4/004F16F15/02
Inventor 林起崟洪军王继红刘正朱林波
Owner XI AN JIAOTONG UNIV
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