The steps of precision parts processing and programming mainly include the following:
Analyze the drawing of the part: It refers to the analysis of the contour of the part and the analysis of the dimensional accuracy, shape and position accuracy of the part, surface roughness, technical requirements, part material, heat treatment and other requirements.
Determine the processing technology: select the processing plan to determine the processing path, select the positioning and clamping method, select the tool, select the cutting parameter, select the tool set point and tool change point.
Numerical calculation: select the programming origin, perform correct mathematical calculations on the basic points of the part drawing, and prepare the program list.
Compile the program list: compile the processing program list according to the instructions and program format specified by the CNC machine tool.
Production of control medium: Simple numerical control programs are directly manually input into the numerical control system of the machine tool. When the program is automatically entered, the control medium must be made. Most programs now use floppy disks, removable storage devices and hard disks as control media, and use computers to transfer them into the CNC system of the machine tool. At present, the old-fashioned controlled medium perforated paper bags have basically ceased to be used.
Validation program: The precision parts processing program must be validated before it can be used. Usually, the validity of the machine tool is dry running, and the machine tool with a graphics display card can be directly verified on the CRT display.