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A testing device for dynamic stiffness of a spindle bearing joint

A testing device and spindle bearing technology, applied in mechanical bearing testing, machine/structural component testing, vibration testing, etc., can solve the problems of bearing dynamic stiffness that consumes a lot of time and lag, and achieves reduced complexity and accurate test results. , the effect of saving manufacturing costs

Inactive Publication Date: 2019-01-22
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the backwardness of the computer level at that time, it took a lot of time to solve the dynamic stiffness of the bearing.

Method used

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  • A testing device for dynamic stiffness of a spindle bearing joint
  • A testing device for dynamic stiffness of a spindle bearing joint
  • A testing device for dynamic stiffness of a spindle bearing joint

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Embodiment Construction

[0036] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Such as figure 1 As shown, the present invention provides a dynamic stiffness test device for a bearing joint, which includes a bottom plate 1 and a motor assembly 2, a rotational speed sensor 4, an accelerator 5, a supporting bearing assembly, and a bearing assembly to be tested 8 mounted on the T-slot of the bottom plate 1. , The transmission shaft 13 and the axial displacement sensor 14, wherein the bearing assembly 8 to be tested is sleeved on the transmission shaft 13, both ends of the transmission shaft 13 are supported by the supporting bearing assembly, and one end is connected to the accelerator 5 and the motor assembly 2 in turn. The sensor 4 and the axial displacement sensor 14 are used to measure the rotational speed and the axia...

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Abstract

The invention relates to the technical field of the dynamic behavior parameter testing of the bearing under the different working condition load, and in particular to a dynamic stiffness testing device for a joint part of a main shaft bearing. The dynamic stiffness testing device for the joint part of the main shaft bearing comprises a bottom plate, and a motor component, a revolution speed sensor, an accelerator, a support bearing component, a bearing component to be tested, an excitation device, a transmission shaft, an axial displacement sensor and a radial displacement sensor which are installed on the bottom plate. The bearing component to be tested and the excitation device are sheathed on the transmission shaft. Two ends of the transmission shaft are supported by the support bearing component, and one end is successively connected with the accelerator and the motor component. The revolution speed sensor, the axial displacement sensor and the radial displacement sensor are respectively used for measuring the revolving speed, the axial displacement and the radial displacement of the transmission shaft. The dynamic stiffness testing device for the joint part of the main shaft bearing has the characteristics of convenient measurement, clear structure and simple operation, and is capable of simulating the actual working conditions to obtain the bearing stiffness, and has the important function of researching the dynamic property of the joint part of the bearing and ensuring the rational pretension force.

Description

Technical field [0001] The invention relates to the technical field of testing dynamic characteristic parameters of bearings under different working conditions, and in particular to a testing device for the dynamic stiffness of a spindle bearing joint. Background technique [0002] Angular contact ball bearings are one of the most widely used parts in mechanical equipment. Its stiffness performance directly affects the stiffness characteristics of the spindle system. Especially in high-speed operation, the stiffness of angular contact ball bearings directly affects the dynamic characteristics of the spindle system. In turn, it affects the machining accuracy of machine tools, so it is of great significance to study the stiffness of angular contact ball bearings, especially the dynamic stiffness. [0003] As early as the middle of the last century, researchers from the former Soviet Union studied the joint vibration problem that affects the machining accuracy of machine tools. In th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00G01M7/02G01M13/04
CPCG01M5/005G01M7/02G01M13/04G01M13/045
Inventor 骆海涛王正印于长帅富佳陈士鹏
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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