Machining requirements for precision parts

What are the processing requirements for precision parts?

     For precision parts, the processing is very strict, and the processing procedures include feeding and feeding. There are specific requirements for the size and accuracy, such as 1mm plus or minus how many microns, etc. If the size is too wrong, it will become a waste product. At this time, it is equivalent to reprocessing, which is time-consuming and laborious, and sometimes even makes the entire processing material scrap. This results in an increase in cost, and at the same time, the parts are definitely not usable.

     For the processing of precision parts, there are mainly dimensional requirements, such as the diameter of the cylinder, there are strict requirements, and the positive and negative errors are within the specified requirements. Requirements, positive and negative errors are also specified, such as a built-in cylinder (take the simplest basic component as an example), if the diameter is too large and exceeds the allowable error range, it will cause the situation that it cannot be inserted. If the actual If the diameter is too small and exceeds the lower limit of the allowable negative value of the error, it will cause the insertion to be too loose and the problem of not firmness will occur. These are all unqualified products, or the length of the cylinder is too long or too short, beyond the allowable range of error, all of which are unqualified products, and they must be scrapped or reprocessed, which will inevitably increase the cost.

     The above are the requirements for the processing of precision parts, which is the most important size problem. It must be processed in strict accordance with the additional drawings. The actual size of the processed will definitely not be exactly the same as the theoretical size of the drawing. However, as long as the processing size is within the error All qualified parts are within the allowable range. Therefore, the requirement for precision parts processing is to process them in strict accordance with the theoretical size.