Auxiliary test tool and method for wave spring

Abstract

The invention discloses an auxiliary test tool and method for a wave spring, and the tool comprises an upper hoop ring and a lower hoop ring. The internal diameters of the upper and lower hoop rings are adapted to the external diameter of a press plate of an electronic universal material testing machine. The upper hoop ring is used for holding an upper press disc of the electronic universal material testing machine, and the lower hoop ring is used for holding a lower press disc of the electronic universal material testing machine. The tool also comprises an extensometer which is installed on the upper and lower hoop rings, and is used for measuring the change of the distance between the upper hoop ring and the lower hoop ring. According to the invention, the auxiliary test tool and the electronic universal material testing machine are employed for automatic constant-speed loading, and the extensometer is used for directly measuring the deformation of the wave spring in a loading process. The tool can avoid a test error caused by manual loading and single-point sampling in the prior art, improves the test precision, and is simple in operation. A test curve is automatically recordedby a computer, and the performance analysis accuracy and testing efficiency of the wave spring are improved.

Description

technical field [0001] The invention relates to a wave spring auxiliary test tooling and a test method, belonging to the field of small and medium-sized motor manufacturing. Background technique [0002] Wave springs are widely used in small and medium-sized motors. They are used to adjust the preload and clearance of bearings, make the bearings work in the best lubrication and rolling state, and reduce the vibration and noise generated during the operation of the motor. In the motor design process, we must grasp the elastic force-deformation relationship of the wave spring, so as to design a suitable installation space for the wave spring, ensure the best preload of the bearing, and prolong the service life of the bearing and the motor. [0003] The patent document CN201610371287.8 discloses a test device, which is applied by manually adjusting the bolt, the force indication value is read by a spring scale, and the spring height is measured by a vernier caliper, which is af...

AI Technical Summary

Problems solved by technology

[0003] The patent document CN201610371287.8 discloses a test device, which is applied by manually adjusting the bolt, the force indication value is read by a spring scale, and the spring height is measured by a vernier caliper, which is affected by the operator's factors and the accuracy is not high; moreover, the measured The curve between spring height and preload is drawn through extremely limited independent test points, which cannot accurately reflect the actual spring force-deformation relationship of wave springs

[0004] Patent document CN201720882342.X discloses a tooling for elastic force measurement. A spring with a certain force is used to apply force to the spring component to be measured, and a vernier caliper is used to measure the compressed size of the spring. The accuracy is not high, and it cannot accurately and completely reflect the actual elastic force-deformation of the wave spring. relation

Images