Method and correction device for automatic measurement and compensation of five-axis machine tool structure error
An automatic measurement and axis error technology, applied in automatic control devices, feeding devices, metal processing machinery parts, etc., can solve the problems of inability to achieve error compensation, high cost, time-consuming and labor-intensive
Active Publication Date: 2021-08-13
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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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
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[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0026] The invention proposes a method for automatically measuring and compensating the structure error of a five-axis machine tool, which only needs to use a correction block and a measuring head, and has a very simple structure. The error automatic measurement compensation is realized by using the error automatic measurement program and the calculation compensation model. Since the whole process is semi-automatic, the operation is simple for machine tool debuggers and maintenance personnel, and the five-axis linkage structural error measurement and compensation can be quickly completed with just a few instructions.
[0027] In the preferred embodiment of the present invention, please refer to figure 1 As shown, it is a schemat...
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Five-axis machine tool structural error automatic measurement, compensation and correction method, a five-axis correction block is installed on the machine tool table, the five-axis correction block includes a reference square table and a reference ring, and the side and top surfaces of the reference square table are parallel to the coordinate axis of the machine tool ;Establish a five-axis error model to obtain the error components of the structural error in the X, Y, Z directions, , , and the spindle axial error L SPD ;Use the CNC system of the machine tool to start the five-axis structure error automatic measurement cycle macro program to measure the angle error of the machine tool's axis of rotation and the position error of the axis of the rotation axis and the axis of the main shaft; and measure the axial error of the main shaft; The structural error and the spindle axial error are substituted into the established five-axis five-axis error model, and compensated to each motion coordinate axis in the interpolation cycle of the machine tool numerical control system. The invention also discloses a correction device for automatic measurement and compensation of the structural error of the five-axis machine tool, which realizes the automatic measurement and compensation of the structural error of the five-axis machine tool.
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...
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IPC IPC(8): B23Q15/12
CPCB23Q15/12
Inventor 高诚张盛桂李初晔马岩冯长征
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST