For the processing of precision parts, the main dimensional requirements are as follows.

1. For example, what is the diameter of the cylinder? There are strict requirements, positive and negative errors within the specified requirements is a qualified part, otherwise it is not a qualified part.

2. Length, width and height also have specific strict requirements, and positive and negative errors are also specified, for example, an embedded cylinder (with the simplest basic parts as an example), if the diameter is too large, exceeding the allowable range of error, it will cause the situation that can not be inserted, if the actual diameter is too small, exceeding the negative lower limit of error, it will cause the problem of too loose and unstable insertion.

These are unqualified products, or the length of the cylinder is too long or too short, beyond the allowed error, are unqualified products, are to be scrapped, or reprocessed, which is bound to cause an increase in costs. The processing requirements of precision parts are mainly size problems, must be processed in strict accordance with the drawings of the other side, the actual size processed will certainly not be the same as the theoretical size on the drawings, but, as long as the processing size is within the scope of error is qualified parts, so the processing requirements of precision parts are processed in strict accordance with the theoretical size.

Followed by advanced precision parts processing equipment and testing equipment, advanced processing equipment makes the processing of precision parts easier, higher precision, better effect.