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Spline fatigue test device

A fatigue test and fatigue testing machine technology, applied in the field of gear parts fatigue testing devices, can solve the problems of inaccurate fatigue test results, lack of special devices for spline fatigue testing, etc., to achieve clamping and fatigue testing, and low testing costs , the effect of reducing cost and complexity

Pending Publication Date: 2022-02-11
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the following problems in the prior art: (1) lack of special device for spline fatigue test; (2) inaccurate fatigue test results

Method used

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  • Spline fatigue test device
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Embodiment Construction

[0048] The present invention will be further elaborated below in conjunction with the accompanying drawings, that is, specific embodiments.

[0049] Such as figure 1 As shown, a spline fatigue testing device disclosed in this embodiment includes a tension-compression fatigue testing machine and a spline fatigue testing jig.

[0050] Such as figure 1 As shown, the spline fatigue test fixture includes an external spline clamping mechanism 1 , an internal spline position fine adjustment mechanism 2 , an internal spline position coarse adjustment mechanism 3 , a support mechanism 4 , and a fatigue testing machine connection mechanism 5 .

[0051] The external spline clamping mechanism is used to clamp the external spline, and is mainly composed of an external spline fastening bolt 1.1 and an external spline fastening nut 1.2, such as image 3 shown. The external spline is located between the two internal clamping arms 4.2, and the center and surroundings of the external spline ...

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Abstract

The invention discloses a spline fatigue test device and belongs to the technical field of gear part fatigue test devices. The device comprises a tension-compression fatigue testing machine and a spline fatigue testing clamp, wherein the spline fatigue testing clamp comprises an external spline clamping mechanism, an internal spline position fine adjustment mechanism, an internal spline position coarse adjustment mechanism, a supporting mechanism and a fatigue testing machine connecting mechanism. A special spline fatigue testing machine is not needed, the requirement of the spline fatigue testing machine is reduced by additionally arranging the spline fatigue testing clamp, that is, the spline fatigue testing clamp is installed on the tension and compression fatigue testing machine, and the tension and compression cyclic load of the tension and compression fatigue testing machine is converted into the rotary cyclic load between an internal spline and an external spline; the spline fatigue test is realized, the spline fatigue test is carried out on the tension and compression fatigue testing machine, cost and complexity of the spline fatigue test can be reduced, and spline fatigue test precision can be improved. The method has advantages of being low in testing cost, high in testing precision and good in applicability.

Description

technical field [0001] The invention relates to a spline fatigue test device, which belongs to the technical field of fatigue test devices for gear parts. Background technique [0002] As a common connection and transmission structure for shaft parts, splines have been widely used in vehicles, aerospace and other fields. At the same time, because the cyclic load on the splines is usually greater than that on other parts, the splines are preferentially fatigued. failure and lead to failure of the entire component or even the entire device. In order to improve the reliability of equipment, it is necessary to carry out experimental research and testing on the fatigue performance of splines. [0003] For larger parts such as gears, the gears are often installed on the test platform through fixtures, and then loads are applied to the gears with loading parts to test the bending fatigue strength of the single teeth of the gears. Compared with the gear, the tooth height of the sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/32
CPCG01N3/32G01N2203/0005G01N2203/0073G01N2203/027
Inventor 庞思勤高飞农解丽静宋博文刘桐语姜佳明王西彬
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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