Drive shaft hanger assembly product knowledge
发布时间：2016.11.29 新闻来源：邢台远拓汽车零部件制造有限公司
1, rough benchmark choice. For general bracket parts, it is perfectly reasonable to use the relative surface of the bottom of the bracket as a rough reference. But for this part, if the bracket bottom surface opposite as a rough benchmark, it may cause the datum can not be guaranteed, therefore, in accordance with the principle of benchmark crude (i.e. when the parts are not processing surface, with these surface as rough basis; if there are a number of parts processing surface is not. Should be based on the relative position accuracy and machining surface requires high processing surface as a rough benchmark).
2, the choice of precision benchmark. The problem of benchmark coincidence is mainly considered. When the design standards and process standards do not coincide, the size conversion should be carried out, which will be calculated later, no longer repeated here.
