Electric main shaft dynamic balance performance test experimental system

Abstract

The invention discloses an electric main shaft dynamic balance performance test experimental system. The electric main shaft dynamic balance performance test experimental system comprises a vibration attenuation experimental table, a high-speed electric main shaft, a plurality of balance counter weights, four vibration displacement sensors, two vibration acceleration sensors, a high-rotating-speed sensor, two vibration displacement sensor supports, two dynamic balance adjusting discs, a cutter, a synchronous data collecting card, a computer, a frequency conversion driver used for adjusting the rotating speed of a rotor on the high-speed electric main shaft, an oil-air lubricator used for conducting oil-air lubrication on a bearing of the high-speed electric main shaft and a recirculation cooler used for cooling the high-speed electric main shaft. By means of the electric main shaft dynamic balance performance test experimental system, the high-speed electric main shaft can be completely and comprehensively simulated; in addition, the electric main shaft dynamic balance performance testing can be achieved, and effectiveness of a dynamic balance method can be verified through the experimental system.

Description

technical field [0001] The invention relates to a monitoring experiment system, in particular to an electric spindle dynamic balance performance testing experiment system. Background technique [0002] The equipment manufacturing industry has always been a pillar industry of the national economy and the industrial field. The important core of equipment manufacturing is the precision CNC machine tool. The machining accuracy of the precision CNC machine tool mainly depends on the performance of the electric spindle. At the same time, high-speed machining can Effectively promoting the improvement of production efficiency, improving the surface quality of processed workpieces and other advantages, are being applied in more and more manufacturing fields, which has played an important role in promoting the development of high-speed electric spindle 1, and also for electric spindle The design, manufacture, application, and testing techniques of advanced technologies have brought gr...

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Problems solved by technology

[0003] Due to many factors such as material, assembly, wear and so on, there must be imbalance in the electric spindle, which has a great impact on the dynamic characteristics of the electric spindle during operation, especially under the condition of high-speed operation, the imbalance will not only bring The reduction of machining accuracy will also make it difficult for the electric spindle to reach a higher speed, and in serious cases will lead to safety accidents. In this case, it is extremely important to be able to accurately measure the dynamic characteristics of the high-speed electric spindle 1, especially the dynamic balance performance

[0004] At present, there is no test system for the dynamic balance performance of the high-speed and high-precision electric spindle in the country, and the existing experimental system for the dynamic balance performance test of the electric spindle usually has the following deficiencies:

[0005] 1) The applicable test speed of the test system is low, which is often not suitable for the actual needs of the dynamic balance performance test of the high-speed electric spindle 1;

[0006] 2) The rotating speed of the electric spindle used in high-speed machining is relatively high. When using the experimental system to simulate the field environment, the electric spindle with a high rotating speed should be selected. The need for environmental simulation of spindle 1 test;

[0007] 3) The test items of the existing dynamic balance performance testing experimental system are single, and often only one physical quantity expression is used to describe the dynamic balance performance, while the spindle dynamic balance performance can be reflected in many aspects, so the traditional dynamic balance performance The test experiment system cannot realize the comprehensiveness and objectivity of the expression;

[0008] 4) In the actual processing state, the unbalance of the spindle is likely to be caused by the wear and damage of the tool, and the existing dynamic balance performance test system does not have the function of simulating the unbalance of the tool, which cannot meet the requirements of the experimental system to the industry. The objective needs of actual progress;

[0009] 5) The existing dynamic balance performance testing experimental system is often complex in structure, but relatively simple in function, and the system performance has not been fully utilized;

[0010] 6) For the dynamic balance performance test of the electric spindle, it is extremely important to be able to accurately obtain the vibration caused by unbalance and conduct a reasonable analysis of the data. The processing efficiency is low, and the accuracy of the spindle unbalance obtained by using the test data is poor

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