The consistency of the dimensions of the workpiece being machined depends to a large extent on the consistency of the state of the process system. After the grinding wheel is trimmed once, the thickness of the abrasive is reduced, and the end face of the flat cutting disc on sale changes to the specified calibration position, which causes the state of the entire process system to change, and the size of the workpiece to be processed also changes, and dimensional consistency cannot be guaranteed. Therefore, the compensation after the dressing of the grinding wheel is particularly important.
The process of analyzing the dressing of the grinding wheel is the mutual grinding of the two grinding tools. Not only the thickness of the grinding wheel will be reduced, but also the thickness of the grinding wheel of the dressing wheel will be reduced, which is a comprehensive result. Therefore, the method of compensation for grinding wheel dressing was determined by using multiple tests.
Because the hardness and wear resistance of the diamond wheel is much larger than the GC cup dressing wheel. It is foreseeable that the thickness of the abrasive reduced by the diamond wheel during a dressing process is much less than the thickness of the abrasive reduced by the dressing wheel. As shown in the figure, the dressing wheel is fixed in position, and the dressing wheel advances in the feeding direction by a dressing amount. Due to mutual grinding, the thickness of the grinding wheel and the dressing wheel are simultaneously reduced. The relationship between them is: dressing amount = grinding wheel reduction amount of dressing wheel reduction. In order to ensure the dimensional consistency of the workpiece to be machined, the reduction of the aluminum flat cutting disc after trimming should be compensated. The actual trimming test data shows that when the dressing amount is 0.03 mm, the grinding wheel thinning amount is 0.0015 mm, and the dressing wheel thinning amount is 0.0275 mm.