Laser-tracker-based omnibearing measure method for space precision of machine tool

Abstract

The invention provides a laser-tracker-based omnibearing measure method for space precision of a machine tool. Light focusing is carried out on a target lens and a laser tracker; the target lens is absorbed to a center of a cross sliding table arranged on the top of a rotary table device and the rotary table device is controlled to make rotation, so that a laser tracker laser beam is perpendicular to the end surface of the target lens; the cross sliding table is adjusted, so that the center of the target lens is superposed with the rotary center of the rotary table device; the laser tracker moved along a direction from a first base station to a next base station; the rotary table device is controlled to make rotation and measurement of a next base station is started after adjustment completion, and the whole measurement process is completed repeatedly. Therefore, rapid and low-cost measurement of a machine tool by a single laser tracker at any direction around the machine tool is realized. With the method, a base station can be set at any direction around a target lens; and precision measurement can be realized precisely and rapidly.

Description

technical field [0001] The invention relates to the technical field of measuring the spatial precision of a numerically controlled machine tool, in particular to a method for measuring the spatial precision of a machine tool in an all-round way based on a laser tracker. Background technique [0002] Accuracy and precision retention are important performance indicators of CNC machine tools, and are also the main weak link of domestic CNC machine tools. Compensating system errors through modern information technology is an economical and effective method to improve the machining accuracy of machine tools. How to quickly and accurately obtain the various errors of the machine tool is an important prerequisite for achieving the above goals. Due to the superiority of laser trackers in the field of space measurement, in recent years, based on the GPS measurement principle, the method of using multiple laser trackers to measure the accuracy of CNC machine tools at the same time, a...

AI Technical Summary

Problems solved by technology

However, whether multiple laser trackers measure at the same time or a single laser tracker performs time-sharing measurement, due to the limitation of the reflection angle of the target mirror, the laser trackers can only be distributed on the same side of the target mirror during the entire measurement process. Layout constraints severely affect the measurement of machine tool accuracy

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