In the CNC machining of parts before the work, to combine the actual situation of CNC machine tools in the CNC machine tools to enter a scientific and reasonable processing program, and ensure that CNC machine tool processing operations are strictly in accordance with the implementation of the planned processing program. Each kind of parts of the processing program is not the same, but the content covered by a few, the main program content are: parts processing process, parts processing selected tools, parts processing strategy and the corresponding parameters of the machine settings. In order to ensure that the processing program is effective, to the parts of the CNC machining process for detailed analysis and research, at the same time, but also with reference to the relevant standard specifications for design, to ensure that the CNC machining process content specific and detailed, and thus ensure the success rate of parts processing.
As the use of CNC machine tools for processing parts are often high precision requirements, and CNC machine tools in the processing work, is completely in accordance with the pre-designed computer program for processing, manual intervention is very little, resulting in poor self-adaptability of the machine tool in processing. For example, CNC machine tools in the processing, processing materials do not meet the requirements, the machine still according to the computer program for processing, and can not be judged on the unreasonable processing materials to be removed. In addition, CNC machine tools in the processing of parts, completely under the control of the computer for processing operations, computer program design is reasonable or not for the processing quality of parts has a very important impact, if the processing program is not set up to cause the machine tool to process the parts of the product is not up to standard, and may even cause accidents, damage to the machine tool. Therefore, in order to ensure that the parts processed by the machine meet the requirements, CNC machining process requires more rigorous and accurate.
In the parts of the CNC machining, the external interference factors are more, if not correctly deal with these interference, will cause a considerable impact on the quality of processing parts. Interference factors are: parts and tooling checks, computer program rationality checks, CNC machine tools, such as the overall working condition of the inspection. In the CNC machine tool before processing parts need to exclude these influential interference factors one by one, and thus ensure the quality of parts processing. Because the interference factors to be considered are very many, which will lead to CNC machining process becomes extremely tedious, requiring great patience and experience of staff. In the actual work of CNC machine tool inspection, CNC machine tool operators not only to the size of the parts, size for detailed inspection, and then ensure that the processing requirements, but also the CNC machine tool processing program for effective programming, to ensure that the entire processing program of the parts can run smoothly, and then ensure the quality of the processed parts.
In the CNC machine tool machining process design, to strictly adhere to the process concentration, one-time positioning principle, that is, the CNC machine tool in the same processing
Under the same processing conditions, as many as possible to complete the parts processing process, improve the degree of concentration of the parts processing process. Through the centralized processing of parts, and thus reduce the risk of error brought about by multiple processes, improve the accuracy of CNC machine tools, and thus ensure that the processed parts meet the requirements. In addition, when machining the gaps of coaxial parts, the errors caused by repeated positioning should be fully considered, and in order to reduce the errors caused by repeated positioning, precise positioning techniques should be used so as to reduce the generation of errors.
CNC machine tools in the processing of parts, to strictly follow the principle of first coarse and then fine, in order to improve the efficiency of parts processing on the basis of ensuring the precision of parts processing.
degree. The principle of "coarse" specifically refers to the initial processing of parts, processing operations are simpler processes, CNC machine tools can carry out rapid processing, and thus improve the processing speed, thereby improving the efficiency of processing work; principle of "fine" specifically refers to, the parts processing The key process, the quality of the parts has a very important impact, then the CNC machine tools to carry out strict processing operations, and thus ensure that the quality of processed parts meet the requirements. In the rough machining of parts, the operator should try to reduce the number of times to ensure that the machining allowance meets the requirements of the next process, the entire operation process less, the occupied processing time will be reduced accordingly, thereby improving the efficiency of parts processing; in the fine machining of parts, the deformation of parts brought about by rough machining needs to be fully considered, and then in the finishing process to take effective Processing measures to restore the shape of the parts before processing, so as to ensure that the quality of parts processing meet the requirements.
CNC machine tools in the processing of parts, to strictly follow the principle of first near and then far, and then ensure the shortest route to improve the efficiency of parts processing. In order to
In order to reduce the distance of tool movement, the operator should make a systematic and comprehensive analysis and study of tool movement, carry out a scientific and reasonable design of tool movement, reduce the distance of tool movement, and ensure the shortest distance of tool movement under the premise of ensuring machining quality. In accordance with the requirements of the principle of first near and then far, the tool should first process the part around it, and then gradually expand the processing range to process the more distant parts of the part. When the machining design is carried out according to such a tool path, not only can the tool travel distance be minimized, but also the machining accuracy of various holes can be improved to a certain extent.
In conclusion, the use of CNC machine tools for machining parts with high efficiency, high machining accuracy, stable machining process and other advantages, is widely used in industrial
processing. In this paper, the characteristics of CNC machining process and CNC machining process principles for a systematic and comprehensive analysis of the staff engaged in CNC machining has a certain reference value.