Device and method for detecting thermally induced straightness-perpendicularity errors of horizontal machining center

Abstract

The invention provides a device and method for detecting thermally induced multi-line straightness-perpendicularity errors of a horizontal machining center. The device comprises an eddy current sensormeasurement module and a cast iron square box assembly reference module on the surface of a workbench. According to the technical scheme, the eddy current sensor measurement module is used for carrying out large-stroke measurement of multi-line straightness errors before and after machine tool heating on the reference module placed on the workbench of the precision horizontal machining center, and the multi-line thermally induced straightness-perpendicularity errors of a machine tool are further obtained; and by adopting the device, the thermally induced straightness-perpendicularity errors of three planes can be obtained at the same time, straightness-perpendicularity errors of different positions in the same plane can be obtained, so that the surface perpendicularity errors of any two measurement planes can be obtained, the measurement result is more accurate. The device and method are of great significance to the improvement of the machining precision and the precision retentivityof the precision horizontal machining center.

Description

technical field [0001] The invention relates to a machine tool thermal error detection device and a measurement method, in particular to a thermally induced straightness-perpendicularity error rapid detection device and method of a horizontal machining center. Background technique [0002] The precision horizontal machining center is the most representative equipment among high-end CNC machine tools. It is a strategic basic equipment to ensure the development of national defense and cutting-edge industries, and reflects the comprehensive level of a country's advanced manufacturing technology. Many studies have shown that among the influencing factors of precision machining accuracy, the thermal stability of key parts has a greater impact on the maintenance of precision machining accuracy. Therefore, how to quickly and accurately detect the verticality errors of each plane of the machine tool and perform related error compensation will play a very important role in improving ...

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Problems solved by technology

[0005] In order to solve the existing problems of high cost and poor adaptability of the verticality error measurement device used for precision horizontal machining centers caused by thermal deformation, the present invention proposes a combined precision horizontal machining center thermal deformation straightness- A device and method for quickly measuring perpendicularity errors, the device can almost realize the measurement of the full-stroke error of a precision horizontal machining center, and at the same time perform straightness-perpendicularity error detection on three different planes of the machine tool, and can obtain different positions in the same direction Straightness-perpendicularity error provides initial data for targeted active control thermal error compensation, which is of great significance to the improvement of machining accuracy and accuracy retention of precision horizontal machining centers

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