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Imperceptible electric spark deposition processing pulse power source in gas medium

A technology of electric spark deposition and gas medium, which is applied in the field of pulse power supply for micro electric spark deposition processing, can solve problems such as residual stress, arc drawing, and unstable discharge machining, and achieve the effect of improving surface quality and efficiency

Inactive Publication Date: 2010-12-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems that the existing common EDM machine tool power supply makes the tool electrode material deposited on the surface of the workpiece unable to fully melt, resulting in unstable EDM, short circuit and arcing, which reduces the efficiency of deposition processing, and cannot Dense deposits are formed, holes and gaps are easy to occur, and defects such as residual stress and crack penetration are easy to exist on the surface of the workpiece deposit layer, and a pulse power supply for fine EDM deposition processing in a gas medium is proposed

Method used

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  • Imperceptible electric spark deposition processing pulse power source in gas medium
  • Imperceptible electric spark deposition processing pulse power source in gas medium
  • Imperceptible electric spark deposition processing pulse power source in gas medium

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 Describe this embodiment, this embodiment consists of a control circuit 1, an electric discharge machining platform 2, a first DC power supply 3, a second DC power supply 4, a first switch circuit 5-1, a second switch circuit 5-2 and a third The switch circuit 5-3 is composed; the positive pole of the first DC power supply 3 is connected to the input terminal of the first switch circuit 5-1 and the input terminal of the second switch circuit 5-2, and the positive pole of the second DC power supply 4 is connected to the third switch circuit The input terminal of 5-3, the output terminal of the third switch circuit 5-3, the output terminal of the first switch circuit 5-1 and the output terminal of the second switch circuit 5-2 are connected to the tool electrode 2- 1 and one input M of the control circuit 1, the negative pole of the first DC power supply 3 and the negative pole of the second DC power supply 4 are connecte...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 2 Describe this embodiment, the difference between this embodiment and the specific embodiment is that the control circuit 1 is composed of a discharge voltage detection circuit 1-1, a first optocoupler isolation circuit 1-2, a serial communication circuit 1-3, and a single-chip microcomputer system 1- 4 and the second optocoupler isolation circuit 1-5; the two input terminals of the discharge voltage detection circuit 1-1 are respectively an input terminal M and another input terminal M2 of the control circuit 1, and the discharge voltage detection circuit 1-1 The output end is connected to the input end of the first optocoupler isolation circuit 1-2, the output end of the first optocoupler isolation circuit 1-2 is connected to the INT input end of the single-chip microcomputer system 1-4, the input end of the serial communication circuit 1-3 and The output terminals are respectively connected to pin TXD and pin RXD...

specific Embodiment approach 3

[0013] Specific implementation mode three: combination image 3 Describe this embodiment. The difference between this embodiment and the second embodiment is that the discharge voltage detection circuit 1-1 is composed of a twenty-fifth resistor R25, a ninth capacitor C9, a twenty-sixth resistor R26, a twenty-seventh resistor R27, Composed of the twenty-fifth diode D25, the twenty-eighth adjustable resistor R28, the twenty-ninth resistor R29, the thirtieth resistor R30 and a voltage comparator; one end of the twenty-fifth resistor R25 is one of the control circuit 1 Input terminal M, the other end of the twenty-fifth resistor R25 is connected to one end of the ninth capacitor C9 and one end of the twenty-sixth resistor R26, and the other end of the ninth capacitor C9 is connected to one end of the twenty-seventh resistor R27 and the control circuit 1 The other input end M2 of the 26th resistance R26 and the other end of the 27th resistance R27 are connected to the anode of the...

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Abstract

The invention discloses a micro electric spark deposited processing impulsing power source, which comprises the following steps: connecting the anode of first direct current main with circuit of first switch and carry-in terminal of second switch circuit; connecting anode of second direct current with carry-in terminal of the third switch circuit; connecting the carry-in terminal of the third switch circuit, the first switch circuit and the second switch circuit with the tool electrode carry-in terminal of electric spark working flat base and one carry-in terminal of control circuit; connecting the negative pole of the first direct current main and the second direct current main with bench of electric spark working flat base and the other carry-in terminal of control circuit; making the carry-in terminal of control circuit connect with controlling terminal of the first, second and third switch circuit. It can drop the chap and opening of deposited surface and can increase efficiency of deposited process.

Description

technical field [0001] The invention relates to a pulse power supply, in particular to a pulse power supply for fine electric spark deposition processing. Background technique [0002] Micro-EDM in gaseous medium is a technology that has emerged in recent years. Metal materials such as copper, steel, and tungsten are used as tool electrodes, and ordinary EDM machine tools are used to deposit tool electrode materials in gaseous medium through discharge. On the workpiece, cooperate with the corresponding control strategy to realize the fabrication of microstructure, which is a major breakthrough to the traditional EDM method. [0003] However, because traditional EDM machine tools mostly use transistor pulse power supply, the pulse width and pulse interval cycle in turn during EDM, and the discharge process has certain sudden cooling and sudden heating. In addition, due to the characteristics of fine EDM deposition processing in gas medium It determines that the loss of the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M9/02
Inventor 王振龙金柏冬方宇彭子龙
Owner HARBIN INST OF TECH