Three-dimensional force detection system based on three-axis fast tool servo mechanism

Abstract

The invention provides a three-dimensional force detection system based on a three-axis fast tool servo mechanism. The three-dimensional force detection system comprises the three-axis fast tool servo mechanism, a three-channel charge amplifier module, an AD / DA collection card and an upper computer, wherein the X / Y / Z-axis drive units of the three-axis fast tool servo mechanism are respectively integrated with X / Y / Z-axis piezoelectric ceramic force sensors; the input end of the three-channel charge amplifier module is respectively coupled with the X / Y / Z-axis piezoelectric ceramic force sensors, and the three-channel charge amplifier module is used for amplifying the polarization charge generated by the piezoelectric ceramic force sensors; the input end of the AD / DA collection card is connected with the output end of the three-channel charge amplifier module, and the AD / DA collection card is used for collecting the amplified polarization charge signals output by three output channels; and the upper computer is connected with the output end of the AD / DA collection card and is used for receiving the amplified polarization charge signals collected by the AD / DA collection card and calculating the magnitude of dynamic force received by the X / Y / Z-axis piezoelectric ceramic force sensors based on the signals. Based on the positive piezoelectric effect of a piezoelectric ceramic piece, the system takes the piezoelectric ceramic piece as a force sensor to realize the online detection of three-dimensional forces in the cutting process.

Description

technical field [0001] The invention relates to the technical field of ultra-precision machining, in particular to a three-dimensional force detection system based on a three-axis fast tool servo mechanism. Background technique [0002] The fast tool servo system is a mechanical cutting method based on a single point diamond tool, and it is an effective means to process the microstructure array, the main component of ultra-precision devices. With the development of ultra-precision technology, the complexity of optical three-dimensional free surfaces in special fields is getting higher and higher, and the demand for high-performance manufacturing of microstructures is increasing day by day. Based on the limitation of servo degrees of freedom, the traditional single-axis fast tool servo system is difficult to meet the manufacturing requirements of complex three-dimensional free surfaces and complex microstructures. Therefore, two-axis and three-axis fast tool servo mechanisms ...

AI Technical Summary

Problems solved by technology

However, since the single-axis fast tool servo mechanism has only one servo degree of freedom, it is difficult to process complex free optical surfaces and complex surface microstructures.

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