The specifications of the fine parts processing industr […]
The specifications of the fine parts processing industry are very strict, and there are different processes such as cutting in and cutting out in the processing process. There will be different detailed requirements for the size depending on the product, and the processing accuracy requirements will also be different. Generally speaking, the precision requirements for fine processing are very high, and sometimes it can even be accurate to a micron difference below 1mm. If there is a big difference in size, the product will become scrap, and it is necessary to stop reprocessing to meet the request. This process is very time-consuming and laborious. Sometimes the branch will make all the original data scrapped, resulting in an increase in cost, and at the same time, the parts will inevitably be unusable, so there are many requests for fine parts processing.
So what are the requests for fine parts processing?
(1) Generally, due to the amount of cut, heat generation, and cutting force of the parts, the roughness and precision of the parts are different. In order to ensure the machining accuracy of the parts, it is necessary to stop the processing of rough parts and fine mechanical parts respectively. If rough machining and fine machining stop continuously, the precision of fine machining parts will be lost due to the difference in stress.
(2) The rationality of equipment selection. The machining of rough parts does not require high machining accuracy, but the main reason is to reduce the machining allowance, so fine machining requires very high-precision machine tools. In the processing roads of fine parts, heat treatment processes are often arranged. The location of the heat treatment process is arranged as follows: in order to improve the cutting performance of the metal, such as annealing, normalizing, quenching, and tempering, etc., it is generally arranged in the machining line of mechanical parts.
(3) Generally speaking, almost all fine parts are processed with heat treatment technology, which can improve the cutting performance of metals. The processing and manufacturing of fine parts not only requires the accuracy and stability of the machine tool and the accuracy of the tools and fixtures to ensure but also requires fine measuring instruments to stop calibration and measurement. Some are in the process of processing, and some are after the inspection.
A large number of hot forging forming and warm forging finishing processes of one-fire two-forged parts are the process of directly changing the appearance of the original material into a semi-specific product or a different product. This process is called the process flow, which is also the benchmark for the processing of parts, and the processing is fine. The process flow of the parts is more complicated, and the processing specifications of fine parts can be divided into casting, forging, stamping, welding, heat treatment, processing, assembly, etc. according to the different processes. The machining process of fine parts often refers to the general term of the entire part CNC machining and machine assembly process, while other processes such as cleaning, inspection, equipment maintenance, oil seals, etc., turning methods change the appearance of the original materials or semi-products. This process is called CNC machining, the corresponding switching mode of the tool's middle trajectory is different, and the fine parts system has linear and circular interpolation functions.