Micro-milling vibration precision measurement system taking laser micro-displacement sensor as measuring element

Abstract

The invention belongs to the field of machine tool vibration online measurement, and relates to a precision measurement system for measuring the relative vibration condition between a cutter and a workpiece in the micro-milling process. The measurement system comprises a laser micro-displacement sensor, a sensor bracket, a laser displacement controller, a data acquisition card and a computer provided with a PXI multifunctional controller, wherein the sensor bracket is arranged on a working platform of a micro-milling machine; the laser micro-displacement sensor is arranged the multi-degree of freedom adjustment laser displacement sensor bracket; the position of the laser micro-displacement sensor on the multi-degree of freedom adjustment laser displacement sensor bracket can be adjusted, so that the vibration condition along any of X direction, Y direction and Z direction can be measured. The laser micro-displacement sensor is connected with the laser displacement controller; the laser displacement controller is connected with the data acquisition card; the data acquisition card is arranged in the computer. The measurement system solves the technical problem of the measurement on the relative vibration between the cutter and the workpiece in the micro-milling process, and is high in measurement accuracy, high in equipment portability, wide in measurement range and simple to operate.

Description

technical field [0001] The invention belongs to the field of on-line vibration measurement of machine tools, in particular to a micro-milling vibration precision measurement system using a laser micro-displacement sensor as a measurement element. technical background [0002] Micro-milling is mainly used for the processing of micro-precision parts. The size of the processed parts is generally between 100 μm and 10 mm, and the characteristic size is generally 10 μm to 1 mm. The processed parts have the characteristics of high precision requirements and complex structures. The quality and accuracy of parts are significantly affected by the vibration phenomenon in the micro-milling process. The diameter of the micro-milling cutter used in micro-milling is usually less than 1 mm, which is low in rigidity, easy to wear, and easy to break. The vibration phenomenon in micro-milling will accelerate the wear of the tool, and even cause the tool to break in severe cases, resulting in ...

AI Technical Summary

Problems solved by technology

[0005] The precise measurement of micro-milling vibration is the premise and basis for the realization of micro-milling vibration suppression. At present, the micro-milling vibration measurement system at home and abroad can only measure a certain part or structure of the machine tool, and cannot accurately measure the relative vibration between the tool and the workpiece, or can only Realize measurement in a fixed direction

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