Energy-saving discharge power supply of electrical discharge machining machine

A technology of electric discharge processing machine and discharge power supply, which is applied in electric processing equipment, metal processing equipment, circuits, etc., can solve the problems of difficult heat dissipation, increased wattage, large volume, etc., and achieve the effect of reducing power waste

CN101767229AActive Publication Date: 2010-07-07IND TECH RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2010-07-07

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Abstract

The invention discloses an energy-saving discharge power supply of an electrical discharge machining machine, comprising an AC (alternative current) power supply, an alternative current-to-direct current voltage converter, a direct current-to-direct current voltage converter, a current-limiting unit, a time-limiting unit and a control unit. The invention can reduce the unnecessary waste of the power supply and achieve the purpose of energy saving.
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Description

technical field

[0001] The invention relates to an energy-saving discharge power supply for a discharge processing machine, in particular to a power supply capable of reducing unnecessary waste of power supply. Background technique

[0002] EDM is the use of electrodes to process workpieces with the principle of high-temperature discharge and melting. figure 1 Shown is a traditional current-limiting resistor EDM power supply. Its discharge circuit is composed of an AC 220V power supply, AC power transformer T2, bridge rectifier A, current-limiting resistor R2, reverse current prevention diode D12 and transistor Q5. The principle is that first, the AC power transformer T2 steps down the mains AC 220V to AC 56-70V, and then it is rectified and filtered by the bridge rectifier A to become DC 80-100V, and then the current is limited by the current-limiting resistor R2. At this time, when the transistor Q5 When it is turned on, a high-voltage direct current is generated between ...

Examples

Embodiment Construction

[0072] In order to fully understand the features and effects of the present invention, the present invention will be described in detail by the following specific embodiments in conjunction with the accompanying drawings, as follows:

[0073] figure 2 It is a system schematic diagram of a specific embodiment of the present invention, please refer to figure 2, an energy-saving discharge power supply for an electric discharge machine according to the present invention includes: an AC power supply 1, which outputs an AC voltage; an AC-to-DC voltage conversion device 2, which is coupled to the AC power supply 1 and converts the AC voltage to It is a first DC voltage; a DC-to-DC voltage conversion device 3, wherein the DC-to-DC voltage conversion device 3 is composed of a main discharge circuit and an arcing circuit, which is coupled to the AC-to-DC voltage conversion device 2 And convert the first DC voltage to a second DC voltage, wherein the second DC voltage will drop as the...