Shenzhen prototype factory briefly describes the basic principle of numerical control of vacuum compound die of machine tool

Shenzhen prototype factory briefly describes the basic principle of vacuum compound die CNC machining of machine tools. The machining of workpiece on machine tools is done by the movement of the tool relative to the workpiece. In order to quantitatively describe the movement position and trajectory of the tool relative to the workpiece on the CNC machine tool, the geometric information and process information of the part machining profile on the part drawing must be digitized first, write the processing program according to the specified code and format. Information digitization is to cut the movement track of the tool relative to the workpiece into some minimum unit quantity in the working coordinate system, that is, the minimum displacement. According to the requirements of the program, the numerical control system, after information processing and distribution, controls the movement of several minimum displacement of each coordinate axis, so that the movement track of the tool relative to the workpiece meets the requirements of the workpiece machining contour shape, complete the processing of the workpiece. Figure 1 Chang 1 shows the two-coordinate plane motion in which the vacuum complex model uses the movement of the minimum setting unit in the two vertical direction of each other to synthesize the straight line P0P1 and the circular arc P0P1. The general numerical control system can be based on the contour shape information of the processed workpiece ( Such as the starting point and ending point coordinates of the line, the starting point and ending point coordinates and radius of the arc, etc) Automatically calculate and determine the minimum number of units and the coordinate of the moving point that each coordinate axis should move (Called interpolation calculation)And pulse allocation of each coordinate axis ( Sequential Allocation of pulse number and motion control information) Control the regular movement of each coordinate axis according to the requirements through the servo system. For any curve, the vacuum complex mold can generally use the above linear interpolation and arc interpolation functions of the numerical control system for approximate processing.

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