Multi-axis linkage ultrasonic modulation micro-electrochemical machining system

Abstract

A multi-axis linkage ultrasonic modulation micro-electrochemical machining system comprises an ultrasonic vibration system, an ultrasonic synchronization system, an electrochemical machining power supply system, a multi-axis machine tool control system, a working liquid circulating system, a machining positioning and gap detection system and an online parameter observation and control system. A transverse and longitudinal excitation device is additionally arranged on the joint of an amplitude-change pole, and a machine tool can machine a complex three-dimensional curve or special-shaped hole groove; a machine tool working table is a multi-axis linkage control feeding mechanism, the micro feeding movement of the multi-dimensional space of the working table is achieved, and it is ensured that the machining process is stable; an encoder and a micro displacement sensor are additionally arranged on a machine tool feeding mechanism, and therefore machining gap control and workpiece precise positioning feeding movement can be facilitated; in the machining process, parameter changes can be online observed in real time, preparing and conveying of needed work liquid can be completed by controlling a working liquid delivery device; and workpiece and tool electrode protection can be achieved during machining area collision or short circuit by controlling a switch of an electromagnetic valve and the multi-axis machine tool control system.

Description

technical field [0001] The invention relates to a multi-axis linkage ultrasonic modulation micro-electrolytic machining system, which belongs to the technical field of composite precision and micro-special machining. Background technique [0002] With the rapid development of industry, products are required to have multiple functions in a limited space, so the requirements for ultra-finishing of difficult-to-machine materials, miniaturization, and miniaturization are getting higher and higher. The combination of precision micro and complex curved surface processing technology combines multi-disciplinary content. It is a scientific and technological system that integrates cutting-edge high technology and engineering applications. It has become a research hotspot in modern manufacturing science and an important means for the competitive development of various technologies. [0003] In the field of composite precision and micro-special processing technology, micro-ultrasonic ma...

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Problems solved by technology

[0003] In the field of composite precision and micro-special processing technology, micro-ultrasonic machining, micro-EDM, micro-electrolytic machining and other micro-composite machining methods have emerged. play an important role, however, this processing method also has its limitations

[0004] Chinese invention patent application "CN200610037902.8" discloses a method and device for ultrasonic electrolysis composite micromachining. The micro-pressure adjustment and Z-direction automatic feed measurement device of the invention makes the workbench automatically upward under the action of hydraulic pressure by adding weights. Feed, as the processing depth increases, it is difficult to maintain a constant micro-pressure between the tool electrode and the micro-processing device, and the manual method of adding weights increases manpower, which is not conducive to the automatic development of micro-processing; Ultrasonic abrasive particles with large particle size are mixed into the liquid to prevent the electrolytic short circuit caused by the direct contact of the cathode at the same time, but the ultrasonic abrasive particles will also wear the tool electrode while eliminating passivation and material removal, reducing the The service life of the electrode is difficult to meet the precision requirements of micro-finishing

[0005] The Chinese invention patent "CN102513622B" discloses a micro-finishing method for difficult-to-machine materials. During processing, the workpiece and the electrode maintain a certain constant pressure contact, and the magnetic adjustment mechanism is used to perform continuous stepless adjustment of the micro-pressure. This processing method does not have precision and stability. Because of the high-speed worktable feed system, it can only process axially, and the parts that can be processed are limited. It cannot be used for three-dimensional processing of workpieces, and it cannot be used for processing complex curved surfaces or special-shaped holes. At the same time, when a short circuit occurs during processing, Because there is no protective emergency measure, the workpiece and tool electrodes will be burned directly, which is not conducive to the sustainable processing of the workpiece

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