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Method for matching mechanical external-extrusion lock sleeves

A squeeze locking, mechanical technology, used in special data processing applications, instruments, electrical digital data processing, etc.

Active Publication Date: 2013-08-28
CHANGZHI QINGHUA MACHINERY FACTORY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] That is to say, according to the above theory, it is difficult to select and match locking sleeves with qualified unlocking force and locking force with a high pass rate.

Method used

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  • Method for matching mechanical external-extrusion lock sleeves
  • Method for matching mechanical external-extrusion lock sleeves
  • Method for matching mechanical external-extrusion lock sleeves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] Such as figure 1 , figure 2 As shown, a method for selecting and matching mechanical external extrusion locking sleeves of the present invention is implemented according to the following steps:

[0058] Step 1: Preliminary calculation of theoretical interference;

[0059] Assuming that the unlocking force p=m, using the mechanical model of "interference fit combined thick-walled cylinder", it can be known from the plastic condition of the third strength theory of material mechanics and the elastic deformation condition of Hooke's law,

[0060] The formula for calculating the unlocking force p is:

[0061] p = δ b [ 1 E i ( b 2 + a ...

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PUM

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Abstract

The invention relates to a method for matching mechanical external-extrusion lock sleeves and belongs to the field of mechanical lock of machinery and power and electrical engineering. The method for matching mechanical external-extrusion lock sleeves is provided for overcoming defects of the prior art so as to be capable of matching lock sleeves with qualified unlocking force and locking force in high pass rate. The technical scheme for solving the technical problem includes that the method includes: analyzing technical factors affecting matching of the lock sleeves according to locking principle of the mechanical external-extrusion lock sleeves and practical processing, and finding out a optimum interference magnitude matching method by determining reasonable interference magnitude between the lock sleeves and piston rods, determining interference magnitude and hardness of the lock sleeves, and explicating and measuring methods for matching and the like. By the method for matching the mechanical external-extrusion lock sleeves, matching success rate of the lock sleeves is increased.

Description

technical field [0001] The invention relates to a matching method for the interference between a mechanical external extrusion locking sleeve and a piston rod of a hydraulic cylinder, belonging to the technical field of mechanical locking in mechanical, power and electrical engineering. Background technique [0002] The locking pair of the external extrusion locking hydraulic cylinder is composed of a locking sleeve and a piston rod. The locking sleeve is a mechanical external extrusion locking mechanism on the piston rod. The existing theory is based on the "interference fit combination". Based on the mechanical model of "thick-walled cylinder", from the plastic condition of the third strength theory of material mechanics and the elastic deformation condition of Hooke's law, it can be known that the contact surfaces between the combined thick-walled cylinders with interference fit will inevitably produce mutual compression assembly Pressure p (unlocking force), forming a ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 王威艾敏丁磊贾艳萍
Owner CHANGZHI QINGHUA MACHINERY FACTORY
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