High-speed rotation test device for ultra-hard material grinding sand wheel

Abstract

The invention relates to a sand wheel rotation test device which is suitable for high-speed rotation test for an ultra-hard material grinding sand wheel, performs necessary rotation test on the ultra-hard material grinding sand wheel and supplies reference basis to subsequent actual processing and belongs to the field of grinding test equipment. A motor is arranged on a base and is connected with a bearing pedestal; the bearing pedestal drives the sand wheel to be tested to rotate; a tester is arranged below the sand wheel to be tested. The test device provided by the invention is compact in structure and adopts simple belt transmission; by stage-by-stage speed regulation, a frequency converter controls the motor to gradually accelerate, so that the acceleration time is long, and the load is small; by adoption of a high-speed belt and a large transmission ratio of 4.5, high-speed rotation is realized; the sand wheel rotation test device is suitable for sand wheels of phi230-phi400mm and high-speed rotation test with the extreme linear speed is up to 300m / s. In an acceleration or normal rotation process, if the sand wheel fails, a rotation system is emergently braked according to an energy consumption braking theory, so that the safety of people and the safety of devices are guaranteed.

Description

technical field [0001] The invention relates to a grinding wheel rotation testing device, which is suitable for a high-speed rotation test of superabrasive grinding wheels, performs necessary rotation performance tests for superabrasive grinding wheels, and provides reference for subsequent actual processing; it belongs to the field of grinding test equipment. Background technique [0002] Grinding wheels made of diamond or cubic boron nitride (CBN) abrasives are called superabrasive grinding wheels. Due to its excellent grinding performance, it has been widely used in various aspects of grinding technology, and has become a technology of precision and ultra-precision grinding, high-efficiency grinding, grinding of difficult-to-machine materials, high-precision forming grinding, and grinding automation. basis for progress. The abrasive grains of the superabrasive grinding wheel are embedded and fixed by bonding agents, mainly including vitrified bonding agents, resin bondin...

AI Technical Summary

Problems solved by technology

Because high-speed grinding machine tools are more expensive, the test equipment for testing the dynamic balance, safety and rotation accuracy of the grinding wheel on the grinding machine generally uses the electric spindle to drive the grinding wheel to rotate at a high speed. Moreover, due to the unreasonable structural design and acceleration scheme of the previous grinding wheel rotation test equipment, the limit speed of the test platform did not meet the requirements, and the necessary rotation test of the grinding wheel could not be performed.

In addition, the dynamic properties of the grinding wheel such as unbalance, expansion, and rotation accuracy at high speed will inevitably have a great impact on the grinding effect, and most of the previous grinding wheel rotation test equipment can only realize the rotation strength test of the grinding wheel to be tested , the function is relatively simple

Images