Rtcp dynamic precision calibration device and calibration method for five-axis linkage machine tool

Abstract

The invention discloses a five-axis linkage machine tool RTCP dynamic precision calibrating apparatus and a calibrating method thereof. The apparatus comprises a support, and a first face contact type dial gauge and a second face contact type dial gauge both arranged on the support. The central axes of the two face contact type dial gauges are perpendicular to each other and located in the same plane. The apparatus satisfies the following formula: d1=d2<=r-3mm. d1 is the distance between the measuring end face of the first face contact type dial gauge to the vertically intersecting point of the central axes of the two face contact type dial gauges. d2 is the distance between the measuring end face of the second face contact type dial gauge to the vertically intersecting point of the central axes of the two face contact type dial gauges. r is the bulb radius of a bulb test rod for calibration. By using the two face contact type dial gauges arranged on the support, the apparatus prevents complex equation solving processes, conventional dial gauge calculating errors and measuring geometric errors, and complex operations during a conventional calibration method using process. The calibration efficiency and the calibration precision are thus greatly improved. The invention further discloses a calibrating method for the five-axis linkage machine tool RTCP dynamic precision calibrating apparatus.

Description

Technical field [0001] The invention relates to a five-axis linkage machine tool RTCP (Rotation Tool Center Point, five-axis linkage rotary tool point point programming) dynamic accuracy calibration device and a calibration method. Background technique [0002] With the development of machine tool technology in China, high-precision and high-efficiency five-axis machine tools are increasingly used in aerospace, military, automotive and some civilian enterprises. Many domestic machine tool manufacturers have developed and produced five-axis machine tools. . Whether it is when the machine tool manufacturer debugs a five-axis machine tool, or when the machine tool user regularly inspects or maintains the machine tool, the RTCP accuracy of a five-axis linkage machine tool is an extremely important accuracy index, especially the user's RTCP accuracy of the machine tool. There are special and strict regular accuracy inspection specifications, because the RTCP accuracy of the machine t...

AI Technical Summary

Problems solved by technology

Due to the constraints of the devices used in the current method, there are inevitable calculation errors and measurement geometric errors in the calibration or detection methods, so that the obtained data cannot be measured very accurately at one time, which affects the accuracy and efficiency of parameter compensation. It is also necessary to repeatedly perform detection and correction to evaluate and correct the accuracy error

[0004] Simultaneously, the inventor noticed that: there are individual writings mentioning that the special design device does not need to set up the dial indicator for many times, but it needs to repeatedly move the position of the dial indicator so that the dial indicator is aligned with the position of the ball for checking the ball. pole position, such a device also does not escape some of the limitations of conventional dial indicators used in current methods

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