A high-speed milling electric spindle chatter intelligent detection and active suppression device

Abstract

The invention discloses an intelligent detection and active inhibition device for fluttering of a high-speed milling electric spindle. According to the device, in the milling process, a vibration signal of a spindle tool handle is collected in real time through built-in acceleration sensors, built-in displacement sensors and an external data collection and analysis meter; the acceleration vibration signal is analyzed in real time through a modern signal processing method, so that intelligent detection of milling fluttering is achieved; and if fluttering occurs, the vibration information collected by the displacement sensors is transmitted into an FPGA controller, the controller carries out adaptive optimization, a driving signal is output, a piezoelectric actuator is driven by a power amplifier to operate, mutual offset of secondary vibration and machining vibration of the piezoelectric actuator is achieved, and intelligent and active inhibition of the fluttering is achieved. Visual displaying and monitoring of the state information, comprising vibration, displacement, temperature and the like, of the whole system can be achieved on a computer in real time in the machining process. The intelligent detection and active inhibition device for the fluttering of the high-speed milling electric spindle can effectively improve milling stability, milling quality and milling efficiency.

Description

technical field [0001] The invention belongs to the technical field of high-speed milling, and in particular relates to an intelligent detection and active suppression device for cutting chatter of a high-speed milling electric spindle. Background technique [0002] As the "mother machine" of the equipment manufacturing industry, the machine tool provides processing equipment for other industries and is the "pillar of the pillar". With the increasing demand for high-speed and high-efficiency machining of complex precision parts (such as the overall impeller of aero-engines) in the fields of aviation and aerospace, higher requirements are put forward for performance indicators such as speed, precision, and reliability of the cutting spindle. The vibration of a general mechanical rotor is usually on the order of 10 μm, and the working speed is below 10,000 r / min, while the vibration of a high-speed precision spindle is required to be on the order of 1 μm, and the rotation spee...

AI Technical Summary

Problems solved by technology

At present, the commonly used method is the trial cutting method. This method mainly relies on the manual judgment of on-site personnel to determine reasonable cutting parameters, which is low in efficiency and high in cost.

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