Rigidity measuring device for tension spring/compression spring

Abstract

The invention relates to a rigidity measuring device for a tension spring / compression spring. The device comprises a fixing bracket, a screw with a handle, a connecting device and data acquisition equipment. The fixing bracket is composed of a top plate, a bottom plate, side plates and a support; the screw is a hollow screw, the lower end of the hollow screw vertically penetrates through a screw hole in the top plate downwardly and is matched with a bearing on a support plate, a bolt is arranged on one side of the support plate, two ends of the bolt are respectively connected to the top plate and the support plate, and a displacement sensor is arranged at the bottom of the top plate to measure the displacement of the support plate; a mounting hole is formed in the bottom plate, and the centre line of the mounting hole is overlapped with the center line of the screw hole of the top plate; a connecting device is arranged between the support plate and the bottom plate and comprises a mounting assembly and a tension / compression sensor, and the mounting assembly is used for mounting the tension spring or the compression spring. The device not only can apply a pressure by means of the screw to measure the rigidity of the compression spring, but also can apply a tension to measure the rigidity of the tension spring with a micro spring wire distance. A to-be-measured spring can be prevented from rotating along with the hollow screw to affect the measuring result.

Description

technical field [0001] The invention belongs to the technical field of measuring devices, and in particular relates to a tension-compression spring stiffness measuring device. Background technique [0002] The measuring principle of spring stiffness is Hooke's law F= K x , that is, the spring stiffness K is equal to the force on the spring F and spring deflection x ratio. During the test, it is only necessary to obtain the force and deformation of the spring. The simplest measurement method is to manually add weights to the spring and measure the deformation manually. However, the force obtained in this way is discontinuous and manual measurement The error is large, resulting in a large difference between the measurement result and the actual stiffness. In addition, there are some measurement methods. Although the measurement results are relatively accurate, there are still some problems, as follows: [0003] Some measuring devices are too cumbersome. Although accurate...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a tension-compression spring stiffness measurement device, which aims to solve the existing spring stiffness measurement devices, which are cumbersome, can only obtain the force of the spring by applying pressure, and the spring will follow the rotation of the screw rod during measurement.

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