Miniature bearing grinding allowance

Grinding allowance will significantly reduce the productivity, increase the second wheel and grinding machine power consumption: the margin is too small, can't wear off before leaving traces of processing or defect layer. Basic principle is to ensure that the workpiece surface quality under the premise of grinding allowance is smaller, the better. Ring face grinding, because both end face grinding is required, so it is important to pay special attention to the distribution of the cushion on the two end face. Vertical plane grinding, because of the bearing face as the single grinding, and is to benchmark the datum, and grinding surface. So, often take reference face allowance to half of basic allowance, rather than the maximum allowance of datum is basic allowance half plus blank of tolerance. Double face grinding, should pay attention to two points: one is the symmetric grinding, will make the speed of the grinding wheel is the same on both sides, so that both ends to remove the uniform allowance; 2 it is asymmetrical grinding, grinding tapered roller bearing ring end face, because the area of the two end ring size, thus the grinding area also vary, according to the conventional method of grinding hard to meet the technical requirements, in order to ensure its accuracy used by using the following methods: (1) two wheel speed range, and adopts stepless variable speed. Ring of large area using high speed with low speed, small size, make the two end face grinding depth is equal. (2) two grinding wheel with different features and materials, big face using soft grinding wheel, the small face using harder to implement the second round of two end face grinding depth is equal to (3) in the existing equipment ( The material of fixed speed, grinding wheel fixed) Grinding, two end face need to set aside when car processing different allowance, namely one end of the big margin, small margin at the end of the larger, in order to ensure that can meet the technical requirements after grinding