Modular non-blocking energy-saving EDM power supply

An EDM and energy-saving technology, applied in electric processing equipment, metal processing equipment, circuits, etc., can solve the problems of low pulse current change rate and affect the accuracy of EDM processing, etc., achieve high power utilization rate and facilitate equipment troubleshooting And maintenance, improve the effect of EDM precision

Active Publication Date: 2020-10-13
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the inductance device is connected in series in the circuit, the current flowing through the inductance cannot change abruptly, resulting in a low rate of change of the rising and falling edges of the pulse current, which in turn affects the accuracy of EDM.

Method used

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  • Modular non-blocking energy-saving EDM power supply
  • Modular non-blocking energy-saving EDM power supply
  • Modular non-blocking energy-saving EDM power supply

Examples

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Embodiment Construction

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0043] The following describes the modular non-blocking energy-saving electric discharge machining power supply according to the embodiments of the present invention with reference to the accompanying drawings.

[0044] figure 1 It is a schematic diagram of the principle of a modular non-blocking energy-saving EDM power supply according to an embodiment of the present invention.

[0045] like figure 1 As shown, the blockized non-blocking energy-saving EDM power supply includes: a voltage source 1 , a non-blocking pulse power su...

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Abstract

The invention discloses a modular non-resistance energy-saving electric spark machining power supply. The modular non-resistance energy-saving electric spark machining power supply comprises a non-resistance pulse power supply module which is connected to two poles of a voltage source; a pulse discharging controller is connected with the non-resistance pulse power supply module; output poles of the non-resistance pulse power supply module are the positive pole and the negative pole of the electric spark machining power supply; the non-resistance pulse power supply module comprises a DC / DC current source and a pulse chopper circuit; the DC / DC current source is connected in series with the pulse chopper circuit; the DC / DC current source comprises a power switch tube VT1, an inductor L, a freewheel diode D1, a Hall current sensor and a pulse width modulator; and the pulse chopper circuit comprises a power switch tube TP1, a power switch tube TP2, a diode DP, a diode DP1, a diode DP2, a logical processing circuit and a peak voltage absorption circuit. The power supply can reduce electric energy loss, improve the electric energy utilization rate, improve the steepness of the ascending edge and the descending edge of pulse current, and ensure the electric spark machining precision.

Description

technical field [0001] The invention relates to the field of electric discharge technology, in particular to a modular, non-blocking and energy-saving electric discharge processing power supply. Background technique [0002] EDM is a processing method that uses spark discharge to corrode metals to achieve metal cutting. This processing technology makes up for some shortcomings of mechanical processing methods, and has become an important means in mold industry, defense industry and micromanufacturing. As an important part of the EDM system, the EDM power supply is used to provide pulse current to form spark discharge. Its performance has a great influence on the technical and economic indicators such as the accuracy, efficiency, electrode loss, and power utilization of EDM. [0003] In the EDM process, the shorter the discharge pulse time, the steeper the rising and falling edges of the pulse current, and the finer the processing quality. In related technologies, in order ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H1/02
CPCB23H1/02
Inventor 王强赵玥吴爱萍
Owner TSINGHUA UNIV
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