What are the aspects of the processing technology of precision parts? The processing technology of precision parts involves a wide range, and this is only analyzed from the two aspects of processing possibility and convenience. Mainly, the size data on the parts processing drawings should conform to the principle of programming convenience

(1) The dimensioning method on the part drawing should be adapted to the characteristics of numerical control processing. On the precision part machining drawing, the size should be quoted on the same basis or the coordinate size should be directly given.

1. This labeling method is both convenient for programming and for the coordination of dimensions, which brings great convenience in maintaining the consistency of design benchmarks, process benchmarks, test benchmarks, and programming origin settings.

2. Since part designers generally consider assembly and other use characteristics in dimensional marking, they have to use a partially scattered marking method, which will bring many inconveniences to process arrangement and numerical control processing.

3. Due to the high machining accuracy and repeated positioning accuracy of precision parts, the use characteristics will not be damaged due to large accumulated errors. Therefore, the local scattered labeling method can be changed to the same reference size or the coordinate size can be directly given.

(2) Calculate the basis point or node coordinates when programming manually. In automatic programming, precision part machining defines all the geometric elements that make up the contour of the part. Therefore, when analyzing the part drawing, it is necessary to analyze whether the given conditions of the geometric elements are sufficient.

For example, arcs and straight lines, arcs and arcs are tangent on the drawing, but according to the dimensions given on the drawing, when calculating tangent conditions, they become intersected or separated. Due to the insufficiency of the geometric elements that make up the precision parts, it is impossible to start programming. When encountering this situation, it should be negotiated with the part designer to solve it.