Main shaft rotary error accuracy testing device

Abstract

The invention relates to the technical field of machine tool processing, particularly to a main shaft rotary error accuracy testing device for a machine tool. The main shaft rotary error accuracy testing device comprises vortex flow sensors, prefixed amplifying circuits, filter circuits, A / D conversion chips, a single chip microcomputer, a peripheral circuit of the single chip microcomputer, and an embedded microprocessor, wherein the vortex flow sensors comprise an X direction sensor and a Y direction sensor; the X direction sensor and the Y direction sensor are respectively connected to the input end of the single chip microcomputer through the prefixed amplifying circuits, the filter circuits and the A / D conversion chips in sequence; the input-output port of the single chip microcomputer is connected to a memory and the embedded microprocessor; the input-output port of the embedded microprocessor is connected with a keyboard, a mouse, a USB and a display. According to the main shaft rotary error accuracy testing device, the rotary error of the main shaft of the machine tool can be effectively improved, the error condition can be discovered in time to diagnose failure of the machine tool, or the targeted prevention and improvement measures are conducted on the machine tool, so that the machine tool processing precision is improved, and the yield and quality of products processed by the machine tool are ensured.

Description

technical field [0001] The invention relates to the technical field of machine tool processing, in particular to a machine tool spindle rotation error precision testing device. Background technique [0002] Spindle rotation error is the main factor affecting the machining accuracy of the machine tool, and the spindle rotation accuracy is a main index for evaluating the dynamic performance of the machine tool. By measuring the rotation error of the spindle, the running state of the spindle can be monitored, and faults can be found and diagnosed in time, and the rotation accuracy of the spindle can also be improved through error compensation. Therefore, the research on the rotation accuracy of the spindle has a particularly important significance, so many scholars at home and abroad They have conducted long-term research on their testing methods and achieved certain results. [0003] The rotation accuracy of the early machine tool spindle was not too high. The common method o...

AI Technical Summary

Problems solved by technology

The reverse method is based on the good repeatability of the roundness error of the workpiece and the error of the spindle system in a short period of measurement. The relative position of the workpiece and the sensor to the spindle is changed, and then two measurements are made respectively, and the combined error of the two measurements is calculated. After processing, the spindle system error can be obtained; the multi-step method only needs one sensor to collect data, and the workpiece or the spindle is transferred to a specific position measurement work; the multi-point method uses multiple sensors to simultaneously collect data in the radial direction of the spindle, and multiple sensors They are arranged at a certain angle in the plane of the vertical axis, and then the shape error and the rotation error of the main shaft are separated by processing the collected data. The three-point method is the most widely used error separation technology in multi-point method measurement, but It suffers from harmonic distortion

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