Piezoelectric self-excited impulse-type micro electro discharge machining device and machining method thereof
A processing device and pulse-type technology, which is applied in the direction of electric processing equipment, metal processing equipment, circuits, etc., can solve the problems that the distance between the tool electrode and the workpiece cannot be automatically adjusted, and the ultrasonic vibration cannot be 100% utilized, so as to improve efficiency and quality. Effect of promoting discharge and reducing manufacturing cost
Inactive Publication Date: 2011-04-27
SHANDONG UNIV
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Problems solved by technology
The disadvantage of this method is that a set of ultrasonic generating device and pulse power supply are required, and the two are independent, so the ultrasonic vibration cannot be 100% utilized; the distance between the tool electrode and the workpiece cannot be automatically adjusted
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0024] figure 1 , 2 Among them, a piezoelectric self-excited pulse micro-EDM device, including a linear motion shaft 1, an actuator 2 and an electrode 3, one end of the linear motion shaft 1 and the actuator 2 is connected, and the other end of the actuator 2 It is connected with the electrode 3; among them, the actuator 2, the DC power supply 5, the capacitor 6, the resistor 7 and the resistor 8 form an equivalent RC circuit; the two poles of the DC power supply 5 are respectively connected with the electrode 3 and the workpiece 4, and the DC power supply 5 The two poles are also connected to the two ends of the piezoelectric ceramics of the actuator 2 respectively.
[0025] In the RC circuit, the actuator 2, the DC power supply 5, the resistor 7 and the resistor 8 are connected in series, and the capacitor 6 is connected in parallel with the actuato...
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Abstract
The invention relates to a piezoelectric self-excited impulse-type micro electro discharge machining device, comprising a linear motion axis, an actuator and electrodes, wherein the linear motion axis is connected with one end of the actuator; the other end of the actuator is connected with the electrodes; an equivalent RC circuit is constituted by the actuator, a direct current electrical source, a capacitor, a resistor R1 and a resistor R2; the two poles of the direct current electrical source are respectively connected with the electrodes and the workpieces; the two poles of the direct current electrical source are also respectively connected to the two ends of the piezoelectric ceramics of the actuator. The invention also discloses a machining method by utilizing the device. In the invention, pulse discharge is generated by the self-excited vibration of the actuator by combining the direct current electrical source and the actuator; and in the machining process, the adaptive vibration of the electrode improves the discharge of electric corrosion products and obviously improves the machining efficiency and quality.
Description
technical field [0001] The invention relates to a micro electric discharge processing technology, in particular to a piezoelectric self-excited pulse type micro electric discharge processing device and a processing method thereof. Background technique [0002] Since there is no significant mechanical cutting force between the workpiece and the tool during the machining process, the micro-EDM technology is not limited by the hardness of the processed material, so as an important branch of micro-machining technology, it has obvious advantages compared with traditional machining. [0003] As the key technology in the micro-EDM device, the micro-feed mechanism is the premise and guarantee for the realization of micro-EDM. The transmission chain of the traditional ball screw feed mechanism is long, and there is a gap between the transmission devices. Its accuracy and frequency response are difficult to meet the requirements of micro-EDM technology. [0004] In addition, the chip...
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IPC IPC(8): B23H1/02
Inventor 张勤河苏树朋
Owner SHANDONG UNIV