For precision parts, the processing is very strict, and the processing procedures include feed and output. There are specific requirements for size and accuracy, such as the number of micrometers plus or minus 1mm. If the size is too wrong, it will become a waste product. At this time, it is equivalent to having to re-process, time-consuming and labor-intensive, and sometimes it will even make the whole processing material scrap, which will increase the cost. At the same time, the parts will definitely not be used.
For the processing of precision parts, there are mainly dimensional requirements, such as the diameter of the cylinder. There are strict requirements. Only the positive and negative errors within the specified range of requirements are qualified parts, otherwise they are unqualified parts; The length, width and height also have specific and strict requirements, and the positive and negative errors are also specified. For example, if the diameter of an embedded cylinder (taking the simplest basic component as an example) is too large and exceeds the allowable range of error, it will cause the problem that it cannot be inserted. If the actual diameter is too small and exceeds the lower limit of the allowable negative value of error, it will cause the problem that it is too loose and not firm to be inserted. These are all unqualified products, or the length of the cylinder is too long or too short, which is beyond the allowable range of error. They are all unqualified products and must be discarded or reprocessed, which will inevitably lead to increased costs.
The second is the advanced precision parts processing equipment and detection equipment. The advanced processing equipment makes it easier to process precision parts, with higher precision and better effect. The testing equipment can detect the parts that do not meet the requirements, so that all products sent to customers can truly meet the requirements.
The above is the requirement for precision parts processing, which is the most important dimension problem. It must be processed in strict accordance with the additional drawings. The actual size of the processed parts will not be exactly the same as the theoretical size of the drawings. However, as long as the processing size is within the allowable range of error, all parts are qualified. Therefore, the requirement for precision parts processing is to process in strict accordance with the theoretical size.
