Full Automatic Control and Compensation Methods of Grinding Wheel Dressing

In the grinding, grinding wheel wear is an important factor affecting the quality of grinding. According to different blade size and material, the grinding time and removal volume are also different. Considering various factors, to set automatic dressing intervals and count the number of grinding wheel grinding blade, it can achieve real-time comparison with dressing interval set by the system.

When the frequency of grinding reaches the set number, it will make a automatic adjustment in NC programs, to realize automatic grinding wheel dressing. In order to guarantee safe operation of machine tool, it also has real-time monitoring for grinding wheel life and dressing wheel life. As long as it detects that grinding wheel or dressing wheel reaches the thickness in the early warning, the machine tool will automatically send alarm signal, and stop waiting for manual processing. If grinding wheel and dressing wheel do not reach the thickness, it will finish smoothly. After finishing, it will go through data processing and get compensation value after grinding wheel dressing.

The consistency of the processed workpiece size depends largely on the consistency of system status. If grinding wheel has been dressed, the thickness of abrasives will be reduced, and the specified location will be also changed, which will result in the whole system state change. And the size of the processed workpiece will also change and can not guarantee the size consistency. Therefore, it is particularly important of compensation for dressed grinding wheel.

The process of grinding wheel dressing is a kind of grinding between two abrasive products. Not only the thickness of grinding wheel will be decreased, dressing wheel’s thickness will also drop, which is the result of combined action. Therefore, it can determine the compensation method for wheel dressing after multiple test.

Because the hardness and wear resistance of diamond grinding wheel are better than GC cup dressing wheel. Predictably, in the process of dressing, the reduced thickness of diamond grinding wheel is far less than that of dressing wheel. In order to guarantee the machining dimension consistency, it should control the decreased amount of grinding wheel. The actual dressing test data shows that when the dressing is 0.03 mm, the thinning amount of grinding wheel is 0.0015 mm, and dressing wheel about 0.0275 mm.

The automatic control method and compensation method of grinding wheel dressing have already been applied in tool grinding machine. Through uninterrupted grinding, the machining size consistency is controlled within 5 microns, and the practical effect of this method has been verified.

For high quality grinding wheels, please click the following links to view more: Luoyang Xiwei Abrasives Co., Ltd., ZHEGNZHOU BOSDI ABRASIVES CO.,LTD. and CIPIE(Henan)Import and Export Trade Co.,LTD.