Test fixture and test method for compressive strength of retaining ring
A compressive strength and tooling technology, used in measuring devices, testing of mechanical parts, testing of machine/structural parts, etc., can solve the problem that compressive strength cannot be measured, and achieve the effect of improving versatility
Active Publication Date: 2017-06-09
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
General tensile testing machines, whether hydraulically driven or motor-driven, rely on the clamps on the force-applying parts of the tensile testing machine to clamp the parts to be tested, and then apply force for testing. If the fixture clamps the retaining ring 3, then as image 3 As shown, it is appropriate to measure the tensile strength of retaining ring 3 under radial force F, but the compressive strength under axial force cannot be measured
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[0030] The tooling for the compressive strength test of the retaining ring in this embodiment mainly includes three parts: the pressure plate 4 , the top cover 11 and the base 14 .
[0031] refer to Figure 4 , the force applying part of the retaining ring compressive strength test tool is the pressure plate 4. The center position of the upper surface 5 of the pressure plate 4 is equipped with a first clamping part 6, more specifically, the first clamping part 6 is a cylinder, which is installed on the pressure plate 4 by means of threaded connection, but the technology in the art Personnel can select the shape and installation method of the first clamping part according to the clamps of the tensile testing machine so as to be suitable for clamping. The lower surface 7 of the pressure plate 4 is equipped with a push rod 9, and the installation position of the push rod 9 will deviate from the center position 8 of the pressure plate 4, more specifically, in this embodiment, the...
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The present invention provides a tool for testing the compressive strength of a retaining ring, comprising: a pressure plate, a first clamping member is installed at the center of the upper surface of the pressure plate, and a top is installed on the lower surface of the pressure plate off the center. Rod; Top cover; Base, the center position of the lower surface of the base is equipped with a second clamping part, the upper surface of the base is a step surface, and the step surface has a first plane, an elevation and a second plane, Above the second plane is a avoidance part; the top cover is connected to the base by bolts, and the top cover does not cover the avoidance part. The invention also provides a method for testing the compressive strength of the retaining ring by using the tooling. The invention makes it possible to measure the compressive strength of the retaining ring by using a conventional tensile testing machine.
Description
technical field [0001] The invention relates to the field of strength detection of retaining rings, in particular to a test tool and a test method for compressive strength of retaining rings. Background technique [0002] Such as figure 1 As shown, the retaining ring 3 in the gearbox is responsible for the separation and positioning of the first driven gear 1 and the second driven gear 2 in different gears, so the retaining ring 3 bears the higher pressure of the first driven gear 1 in the working state. The axial force and the relatively high friction load between the retaining ring 3 and the gear during the rotation of the two gears. Such as figure 2 As shown, the alternating axial force f on the retaining ring 3 will cause plastic deformation or even fracture of the retaining ring 3, thus causing the retaining ring to fail. [0003] When the retaining ring 3 fails in the transmission test, it is an urgent problem to find out the cause from the performance of the retai...
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IPC IPC(8): G01M13/00
Inventor 李丹李昌华陈伟祁稳
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD