The emergence of some processing methods, to our industry, the role of all aspects, are greatly improved, the performance of all aspects, is also very good, precision parts processing is the same, so the possibility and convenience of precision parts processing, the following by CNC precision parts processing I will tell you in detail.
It is mainly the size data on the machining drawings of the parts should fit the programming convenient criterion
The conditions of the geometric elements forming the contour of the part should be sufficient
(1) The dimensioning method on the part drawing should conform to the characteristics of CNC machining. On the precision part machining drawing, the size should be quoted with the same reference or the coordinate size should be directly given.
1. This labeling method is not only convenient for programming, but also convenient for the mutual harmony between sizes. It brings great convenience in adhering to the divergence of design reference, process reference, detection reference and programming origin setting.
2. Because parts designers usually think more about assembly and other application characteristics in size labeling, they have to use local scattered labeling method, which will bring a lot of inconvenience to process layout and numerical control machining.
3. Due to the high machining accuracy and repeated positioning accuracy of precision parts, the application characteristics will not be damaged due to the large accumulation error. Therefore, the local decentralized labeling method can be changed to the labeling method of the same reference size or the coordinate size can be directly given.
(2) Base points or node coordinates should be calculated during manual programming. In the automatic programming, precision parts machining to constitute the outline of all geometric elements to stop the definition. Therefore, in the analysis of parts drawing, we should analyze whether the given conditions of geometric elements are sufficient.