A novel electrical discharge machining circuit and machining method capable of realizing multi-point electrical discharge high-speed electrical discharge machining

A technology of electric discharge machining and electric spark, which is applied in the direction of electric processing equipment, circuits, metal processing equipment, etc., can solve the problems of low processing efficiency and slow processing speed of workpieces, achieve simple adjustment, uniform discharge energy, and ensure the effect of restoring insulation

Active Publication Date: 2016-04-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of low processing efficiency and slow processing speed of the traditional single-electrode electric discharge machining circuit and method. The present invention provides a new electric discharge machining circuit and processing method that can realize multi-point discharge high-speed electric discharge machining

Method used

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  • A novel electrical discharge machining circuit and machining method capable of realizing multi-point electrical discharge high-speed electrical discharge machining
  • A novel electrical discharge machining circuit and machining method capable of realizing multi-point electrical discharge high-speed electrical discharge machining
  • A novel electrical discharge machining circuit and machining method capable of realizing multi-point electrical discharge high-speed electrical discharge machining

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specific Embodiment approach 1

[0030] Specific implementation mode one: see figure 1 and 2Describe this embodiment mode, a new type of electric discharge machining circuit that can realize multi-point discharge high-speed electric discharge machining described in this embodiment mode, it includes N electrodes 1, pulse power supply 2, and N isolation capacitors C 1 , compensation capacitor C 0 , Feeding capacitor C, one end of the N electrodes 1 are respectively connected with N isolation capacitors C 1 One end of the connection, N isolation capacitors C 1 The other end of the feeding capacitor C is connected to one end of the feeding capacitor C at the same time, and the other end of the feeding capacitor C is connected to the compensation capacitor C 0 One end of the pulse power supply is connected to the positive pole of the pulse power supply 2, and the negative pole of the pulse power supply 2 is connected to the compensation capacitor C 0 After the other end is connected at the same time, as the el...

specific Embodiment approach 2

[0034] Specific implementation mode two: see image 3 This embodiment is described. The difference between this embodiment and the new EDM circuit that can realize multi-point discharge and high-speed EDM described in the first embodiment is that it also includes N diodes D 1 , the N diodes D 1 The cathodes are respectively connected with N isolation capacitors C 1 One end of the connection, N diodes D 1 The anode of the same time with the compensation capacitor C 0 The other end is connected to the negative pole of the pulse power supply 2.

[0035] In this embodiment, the positive polarity processing is realized by connecting diodes in parallel;

[0036] When the value of N is 2, in this embodiment, the discharge waveform of electrode 1 has a duty cycle of 80%. For details, see Figure 6 ,From Figure 6 It can be seen from the figure that the electrode 1 can realize negative polarity discharge, therefore, a new type of EDM circuit that can realize multi-point discharge...

specific Embodiment approach 3

[0037] Specific implementation mode three: see Figure 4 This embodiment is described. The difference between this embodiment and the new EDM circuit that can realize multi-point discharge and high-speed EDM described in the first embodiment is that it also includes N diodes D 1 , the N diodes D 1 The anodes are respectively connected to N isolation capacitors C 1 One end of the connection, N diodes D 1 The cathode simultaneously with the compensation capacitor C 0 The other end is connected to the negative pole of the pulse power supply 2.

[0038] In this embodiment, the positive polarity processing is realized by connecting diodes in parallel;

[0039] When the value of N is 2, in this embodiment, the discharge waveform of electrode 1 has a duty cycle of 50%. For details, see Figure 7 ,From Figure 7 It can be seen from the figure that the electrode 1 can realize positive polarity discharge. Therefore, a new type of EDM circuit that can realize multi-point discharge ...

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Abstract

The invention relates to a novel electric spark machining circuit and method capable of achieving multi-point-discharge high-speed electric spark machining, and belongs to the field of electric spark machining. The novel electric spark machining circuit and method solve the problems that according to a traditional single-electrode electric spark machining circuit and method, workpiece machining is low in efficiency and speed. The novel electric spark machining circuit comprises N electrodes, a pulse power source, N isolation capacitors C1, a compensation capacitor C0 and a power supply capacitor C. One end of each electrode is connected with one end of the corresponding isolation capacitor C1, and meanwhile the other end of each isolation capacitor C1 is connected with one end of the power supply capacitor C. The other end of the power supply capacitor C is connected with one end of the compensation capacitor C0 and the positive electrode of the pulse power source. The negative electrode of the pulse power source is connected with the other end of the compensation capacitor C0 at the same time to serve as the electric signal input end of a workpiece to be machined. The N electrodes are mutually insulated and are arranged opposite to the workpiece to be machined. The vertical distance between the electrodes and the workpiece to be machined is d. The novel electric spark machining circuit and method are used in the field of electric spark machining.

Description

technical field [0001] The invention belongs to the field of electrical discharge machining. Background technique [0002] EDM is to use the instantaneous high temperature generated by the pulsed spark discharge between the workpiece and the tool electrode to locally melt and vaporize the workpiece material, so as to achieve the purpose of removing the workpiece material. EDM belongs to non-contact machining. There is no significant mechanical cutting force in the machining process. It can process hard materials and materials with complex shapes that are difficult to process by traditional machining methods. It has simple control and high machining accuracy. These characteristics of EDM make it widely used in mold manufacturing and micromachining. [0003] However, the EDM method has the disadvantages of low processing efficiency and slow processing speed. The main reason is that the EDM process has discontinuity in time and space in the microcosm. As a method of processi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H1/02B23H1/00
Inventor 杨晓冬杨凯
Owner HARBIN INST OF TECH
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