A detection device and method for the parallelism of multiple motion axes of a machine tool

Abstract

The invention discloses a machine tool multiple motion shaft parallelism detecting device and method. The machine tool multiple motion shaft parallelism detecting device and method achieves multiple motion shaft parallelism detection by controlling the combined complementary motion of two or more parallel motion shafts and through the offset of an observing point P on a CCD (charge control device) detection calibration board. The method comprises that the CCD measurement device is fixed onto a motion shaft to be detected, and the motion shaft to be detected is controlled to move to an upper limit position; a main motion shaft drives the motion shaft to be detected to move downwards to enable the P to be presented on a measurement display system; a horizontal movement calibration board enables the P to coincide with the central datum point O of the measurement display system; the main motion shaft moves axially at a distance of H, the motion shaft to be detected moves downwards at a distance of H, and meanwhile, the P of the calibration board is displayed on the measurement display system as a point of O', therefore, the parallelism of the two motion shafts can be calculated by calculating the pixel position offset between the O and the O' and according to the resolution rate of the CCD measurement device. The machine tool multiple motion shaft parallelism detecting device and method achieves convenient and rapid non-contact motion shaft two-dimensional parallelism measurement and improves the efficiency of measuring and adjusting the multiple motion shaft parallelism.

Description

technical field [0001] The invention relates to the field of machine tool detection, in particular to a detection device and method for the parallelism of multiple motion axes of a machine tool. Background technique [0002] In the field of advanced manufacturing, more and more people are connecting other motion units on the main motion axis to realize a more flexible motion system and complete more complex processing tasks. For example, the Chinese patent document CN201881047U "a multi-axis numerical control laser processing device", by connecting the laser processing head to the end of the numerical control machine tool, the processing of larger-sized parts is completed. Chinese patent document CN102151984A "a laser processing method and device suitable for complex curved surfaces", by connecting a laser processing head with two-axis laser galvanometer and Z-axis movement to a five-axis linkage machine tool, the surface laser processing of free-form surfaces is completed. ...

AI Technical Summary

Problems solved by technology

[0006] 1. The side of the motion shaft contacted by the dial gauge is required to be parallel to the direction of motion of the shaft, and the side of the motion shaft and the direction of motion are affected by machining accuracy and assembly, so there are many error factors;

[0007] 2. The offset in the X and Y directions needs to be measured separately, and the measurement steps are relatively cumbersome;

[0008] 3. The measurement results are not intuitive enough, and are not easy to be processed digitally, and often require manual calculation and processing in the later stage

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