How is the processing of precision axis straight optical axis determined?

Firstly, the small machining allowance is used to shorten the processing time and reduce the cost of parts manufacturing. Secondly, sufficient machining allowance should be ensured, especially in the post-processing allowance, in order to obtain the required surface finish and precision. Then, the size of the part to be machined should be considered when determining the grinding allowance. The larger the part, the greater the machining allowance. At the same time, we also need to ensure that the less the grinding allowance is, the better, without leaving any traces and defects of the previous process. Precision axis
Then polish it according to slow and light reasons to eliminate serious oxidation, fine scratches and surface defects; this process is bound to use the corresponding polishing agent, in its selection issues should also be noted, preferential selection of light abrasives, if the linear axis defect is serious, consider using moderate or heavy grinding. Agent.