Which part is difficult to process in the process of linear optical axis?

Linear optical axis is a kind of precision parts, so the processing technology is also put forward higher requirements, if any link is not grasped properly, the quality and accuracy of the entire linear optical axis will be affected.
Because the blank of linear optical axis is round material, the machining of inner hole is a big difficulty, mainly because the hole is long and small, and the other end is impermeable, but also to make the inner hole and outer diameter coaxiality get higher requirements, such a difficult way of processing is not feasible.
We must cooperate with advanced automatic control processing equipment, adopt fine cold drawing, fine grinding and high-precision polishing process, in order to achieve the requirements of the county indicators of linear optical axis, such products can be better used in mechanical equipment.