Torsional spring fatigue tester

Abstract

The invention provides a torsional spring fatigue tester, which includes a main body, a motor, a transmission mechanism, a torsional spring fixture, a lifting platform and a rotating handle. The motor and the lifting platform are fixed and connected with the main body respectively; the torsional spring fixture includes a torsional spring top seat and a torsional spring bottom seat, which are arranged face to face rightly; the torsional spring bottom seat is also fixed and connected with the main body; the torsional spring bottom seat is driven to swing by the motor through the transmission mechanism; the lifting platform is driven to move linearly by the rotating handle; the moving direction of the lifting platform is perpendicular to the swinging plane of the torsional spring bottom seat; the torsional spring top seat is fixed and connected with the lifting platform; and the transmission mechanism includes a crank and rocker mechanism. The invention has the benefits as follows: a torsional spring in springs is subjected to a fatigue test, and the cyclic stress resistance of the special torsional spring under special work conditions can be simulated and determined. The crank and rocker mechanism drives a fixture bottom seat to swing, the simple structure can provide the cyclic swinging test stress, and meanwhile the length of a connecting rod can be adjusted according to special work conditions, so that the swinging angle of the torsional spring can be changed.

Description

technical field [0001] The invention relates to the technical field of spring testing, in particular to a torsion spring fatigue testing machine. Background technique [0002] Springs are widely used in automobiles, chemicals, abrasive tools and other fields, and their performance directly affects the use characteristics of the machines they belong to. The performance of the spring is mainly determined by the following parameters: the diameter of the spring steel wire, the diameter of the spring, the pitch of the spring, the material of the spring, etc. The strength of the spring material itself has basically nothing to do with the working performance of the spring. [0003] During the use of the spring, it is subjected to random loads and undergoes more than tens of millions of cyclic stress changes and finally fails. The failure of the spring is generally fatigue damage, so the research on the spring fatigue damage test is very important. The existing spring testing equ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned existing technical problems, the present invention provides a torsion spring fatigue testing machine, which performs a fatigue test on the torsion spring in the spring to simulate and determine the ability of a specific torsion spring to resist cyclic stress under specific working conditions

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