How to deal with the processing error of precision mechanical parts?

2023-06-14 16:39

How to deal with the processing error of precision mechanical parts?

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Reasonable error is a normal phenomenon in the processing of precision mechanical parts, and then accurate processing measures, parts factories can not avoid normal errors, in the test report, as long as it is a reasonable error, are qualified, the error is definitely unqualified, generally take what measures to avoid?


1. Local error in the processing of precision mechanical parts


Many automated parts processing plants often encounter such a situation when doing product error detection, the size error of the workpiece to be processed is reasonable, but the local size error is very large, in fact, this reason is mainly caused by the gap between the nut and the lead screw in the lathe.


Originally, this place has a gap, but the lathe has been operated for a long time, the gap between the nut and the lead screw will naturally become larger, in the programming of precision parts processing, the compensation error of this gap is considered, but there is no compensation for the newly added gap, resulting in local dimensional deviation, generally need to repair this gap or replace the lead screw.


2. Total error of precision mechanical parts processing


If the overall error of the machining workpiece is large, basically need to be redone, if the connection between the lathe nut and the screw is loose, it is easy to cause a large error, when processing the workpiece, the cutting resistance is very large, if the joint is loose, there will be dimensional drift when cutting, the joint of this lathe must be tightened to eliminate the error.


On the other hand, the loosening of the electric tool holder will also cause a large workpiece error, during the tool change process, the tool holder can not be automatically locked, the cutting point will be offset during cutting, which will inevitably lead to a large error, in order to avoid this error, to lock the tool holder.


Features of precision mechanical parts processing


In practical applications, the higher the precision, the more exquisite, the better the processing level and quality, at the same time, such products are more popular with consumers, in general, CNC machining has unparalleled advantages and characteristics in processing, and its product quality is usually higher, so what are the characteristics of precision mechanical parts processing?


1. First of all, the production efficiency of precision mechanical parts processing is higher, CNC parts processing can process multiple surfaces at the same time, compared with ordinary lathe processing, it can save a lot of processes and time, and the quality of CNC machining parts is much more stable than ordinary lathe processing.


2. The processing of precision mechanical parts plays an irreplaceable role in the research and development of new products, in general, parts of different complexity can be processed by programming, and the modification and update of the design only need to change the lathe program, which can greatly shorten the product development cycle.


3. The degree of automation of precision mechanical parts processing is sufficient, which greatly reduces the physical labor intensity of workers, and workers do not need to control the whole process like ordinary lathes, mainly to observe and supervise lathes, but the technical content of CNC machining is higher than ordinary lathes, so higher mental work is required than ordinary lathes.


4. The initial investment is larger than that of ordinary lathes, because the price of CNC lathes is high, and the maintenance cost and processing preparation cycle are long.



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