Dynamic error measurement system for high-speed machine tools

Abstract

The invention provides a dynamic error measuring system of a high-speed machine tool. The dynamic error measuring system of the high-speed machine tool comprises a reference substance, a scale device and a high-speed image recording device. The scale device is fixed to a machine tool large component moving at high speed and moves at high speed along with the machine tool large component. The high-speed image recording device is used for recording the scale, located on the scale device, of the reference substance so that the deviation between moving trails of the large component of the machine tool can be obtained in the operating process. The dynamic error measuring system of the high-speed machine tool comprises a machine tool small component, a scale device and a high-speed image recording device, wherein the scale device is fixed to one side of the machine tool small component moving at high speed, and the high-speed image recording device is arranged on the other side of the machine tool small component moving at high speed and used for recording the scale, on the scale device, of the machine tool small component moving at high speed. The high-speed image recording devices can directly read the scales, on the scale devices, of the machine tool large component or the machine tool small component moving at high speed, so that the dynamic error of the machine tool large component or the machine tool small component moving at high speed is directly, effectively and conveniently measured.

Description

technical field [0001] The invention relates to the technical field of machine tool dynamic error measurement, in particular to a high-speed machine tool dynamic error measurement system. Background technique [0002] For high-speed and high-precision machine tools, its dynamic characteristics have an extremely important impact on its work performance, efficiency, stability, and reliability. In order to make the machine tool work more quickly, efficiently and with high quality, the research on the dynamic error of the machine tool is an essential content. [0003] The dynamic error of the machine tool here refers to the deviation between the running trajectories of the machine tool during operation. [0004] At present, there are generally four methods for measuring dynamic errors: one is to use a single-dimensional laser interferometer to follow the moving object to measure the dynamic accuracy; the other is to use a two-dimensional grating to directly measure the two-dime...

AI Technical Summary

Problems solved by technology

[0005] The above four methods can measure the dynamic error, but the application occasions are not the same

Laser collimators generally can only perform static or quasi-static measurements. For high-speed moving objects (high-speed machine tools), laser collimators cannot really measure dynamic errors; although the other three instruments can do to the dynamic error measurement, but after the instrument itself collects the data, it needs to do corresponding processing on the collected data to get the measurement result

And because the mass of the instrument itself is large, additional inertia will be added during the test process, which will have a certain impact on the measurement results

Especially for the dynamic errors of small-sized objects (small parts of machine tools moving at high speed), these instruments are even more difficult to measure, and may not even be able to measure

In addition, in order to test the working conditions, the test process also requires tooling design, and the design, installation and commissioning of tooling is also a very time-consuming and cumbersome process

[0006] In summary, for the measurement of dynamic errors of high-speed machine tools, especially small parts moving at high speeds, the prior art has not yet provided a convenient and effective measurement system

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