Automatic measuring compensation method and correction device for five-axis machine tool structure errors

Abstract

Disclosed is an automatic measuring compensation and correction method for five-axis machine tool structure errors. A five-axis correction block is mounted on a machine tool worktable and comprises adatum square table and a datum circular ring. The side surface and the top surface of the datum square table are parallel to the coordinate axis of a machine tool. A five-axis error model is established, and the error components delta<x>, delta<y> and delta<z> in the x, y and z directions and the main shaft axial error L<spd> are obtained; a machine tool numerical control system is used for starting a five-axis structural error automatic measuring cycle macroprogram, the axis angle error of a rotating shaft of the machine tool and the position error of the rotating shaft axis and the main shaft axis are measured; the axial error of a main shaft is measured; and the measured and obtained axis structural error of the main shaft and the main shaft axis error are substituted into the established five-axis error model, and compensated to all movement coordinate axes in the interpolation cycle of the machine tool numerical control system. The invention further discloses an automatic measuring and compensating correction device for the five-axis machine tool structure errors, automatic measuring and compensating of the five-axis machine tool structure errors are achieved.

Description

technical field [0001] The invention relates to a numerically controlled machine tool structure error measurement technology, in particular to a five-axis machine tool structure error automatic measurement compensation method and a correction device for automatic measurement and real-time compensation of the geometric structure error of a five-axis linkage rotating shaft. Background technique [0002] High-end five-axis linkage CNC machine tools have a decisive influence on a country's aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries. To a certain extent, the machining accuracy of five-axis machine tools symbolizes the level of a country's manufacturing industry. In recent years, scholars at home and abroad have done a lot of work on the error detection and compensation of five-axis machine tools, and have achieved certain results in the fields of machine tool control system errors, temperature c...

AI Technical Summary

Problems solved by technology

Among them, manual measurement is time-consuming, labor-intensive, and inefficient; automatic measurement technology is generally based on third-party measurement devices and measurement programs outside the CNC system, which only realize the error detection function, but cannot achieve error compensation, and the cost is high

Images