Control system of error measurement and compensation of curve contour

Abstract

Disclosed in the invention is a control system of error measurement and compensation of a curve contour. The control system comprises a numerical control PC machine, a curve contour error measurement and compensation motion control card, a drive module, a motor module, and a position detection module. The numerical control PC machine contains a numerical control PC unit having the curve contour error compensation function, a serial port device, a touch screen, and a PCI chip; one end is connected with the touch screen to realize the man-machine conversation and the other end is connected with the curve contour error measurement and compensation motion control card based on the PCI chip by a PCI bus, thereby realizing measurement and compensation of the curve contour error. According to the invention, automatic measurement and compensation of the curve contour error can be realized; the interpolation precision of the numerical control system is improved; the curve contour error is reduced; the cost is lowered; and the great economic and social benefits can be created.

Description

technical field [0001] The invention relates to the field of electromechanical integrated numerical control interpolation and contour error control, and more specifically relates to a control system for measuring and compensating curve contour errors. Background technique [0002] In recent years, with the rapid development of the manufacturing industry, multi-axis linkage high-end CNC machine tools have the advantages of high processing precision, strong adaptability of processing capacity and small processing error, and are used in the processing tools of precision instruments, aerospace industry, mold and other manufacturing industries. The field has a very wide range of applications. However, the measurement, compensation and control of curve machining contour errors in the past multi-axis high-end CNC machine tools have the following problems: [0003] (1) In the past, the machine tool structure of the high-end multi-axis linkage CNC machine tool will generally produce...

AI Technical Summary

Problems solved by technology

[0003] (1) In the past, the machine tool structure of the high-end multi-axis linkage CNC machine tool will generally produce machine tool structure errors due to screw clearance and guide rail wear; the driver and controller will generally produce contour errors due to external interference. Although this type of machine tool is multi-axis Linked high-end CNC machine tools do not have corresponding error measurement and compensation devices, which are generally provided by the manufacturer and cannot be assembled or modified by users;

[0004] (2) In the past, high-end CNC machine tools with multi-axis linkage did not have special chips and special burning programs for contour error measurement and compensation. They only used CNC software programs to eliminate small-scale errors to a certain extent, but the effect was not ideal;

[0005] (3) There is no special contour error simulator for high-end CNC machine tools with multi-axis linkage, the measurement accuracy of the contour error is low, the interpolation control accuracy is not high, and the practicability is not strong

Images