In the vertical machining center, there are usually two current programming methods:
①Simple contours-contours composed of straight lines and arcs, programmed directly with G codes of the CNC system.
②Complex contours-three-dimensional curved surface contours, use automatic programming software (CAD/CAM) to draw three-dimensional graphics in the computer, set various corresponding parameters according to the surface type, and automatically generate CNC machining programs. The above two programming methods can basically meet the requirements of CNC machining. But it is very difficult to process the contour of the function equation curve, because the early milling machine numerical control system does not have the function of function calculation, and the processing program of the function equation curve cannot be compiled directly with G code, and the (lower version) CAD/CAM software usually does not It has the function of directly inputting graphics from equations. Therefore, the current method of cutting function equation curve profile is usually: according to the requirements of the drawing, calculate the coordinates of each point on the curve, and then use the straight line or arc instruction code to compile the program according to the calculated coordinate value, and manually enter the system for processing. This method has a lot of work and is prone to errors in calculating a large number of coordinate points.
