亚洲av无码一区二区三区性色|国产精品美女久久久|久久se精品一区精品二区|国产一区二区精品丝袜|99精品国产一区二区|中文字幕在线|国产精品久久久午夜夜伦鲁鲁|巜电车痴汉被爆乳女学生打扑克

Our company is committed to the R & D and innovation of transmission shaft hanger, and has established a good supporting cooperation relationship with many automobile manufacturers. The following Xiaobian brings you information about the selection of the base plane of the transmission shaft hanger.
 
1. Selection of coarse datum. For general support parts, it is completely reasonable to take the relative surface of the support bottom as the rough datum. However, for this part, if the relative surface of the support bottom is used as the rough datum, the surface datum may not be guaranteed. Therefore, according to the selection principle of the rough datum (that is, if the part has unprocessed surfaces, these unprocessed surfaces should be used as the rough datum; if the part has several unprocessed surfaces, the unprocessed surfaces with high relative positional accuracy required to the machined surfaces should be used as the rough datum).