Voltage-regulating energy saving spark machining pulse power supply

A technology of pulse power supply and electric spark, which is applied in the direction of electric processing equipment, metal processing equipment, circuits, etc., can solve the problems of reducing the utilization rate of electric energy and limiting the adjustment range of pulse parameters, so as to save costs, reduce volume and weight, and achieve high The effect of high-frequency electromagnetic radiation is small

Active Publication Date: 2006-05-17
CHINA UNIV OF PETROLEUM (EAST CHINA)
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AI Technical Summary

Problems solved by technology

At present, most of the EDM pulse power supplies commonly used at home and abroad adopt the working method of connecting the current-limiting resistor in series with the discharge main circuit, and its power utilization rate is 25%, while nearly 75% of the power is consumed in the form of heat on the current-limiting resistor. While reducing the utilization rate of electric energy, it also puts forward higher requirements on the heat dissipation sy

Method used

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  • Voltage-regulating energy saving spark machining pulse power supply
  • Voltage-regulating energy saving spark machining pulse power supply

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Embodiment Construction

[0016] See figure 1 . The voltage-regulating energy-saving EDM pulse power supply of the present invention includes a rectifier filter circuit 1, a voltage adjustment circuit 2, a pulse conversion and power amplifier circuit 3, a voltage and current detection circuit 5, a pulse trigger circuit 6, and a PWM control circuit 7. The rectifier filter circuit 1 converts the alternating current into a regulated direct current, and delivers the direct current to the voltage regulation circuit 2. The voltage regulation circuit 2 automatically adjusts the voltage according to the control command sent by the PWM control circuit 7, and sends it to the pulse conversion and power amplifier circuit 3. When the high voltage of about 100V is output, it is used to break the discharge gap. When the gap is broken down, its output is adjusted to a machining maintenance voltage of about 25V. When the pulse discharge enters the discharge interval for deionization, the circuit outputs no load again Volt...

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Abstract

The present invention relates to machining technology, and is especially one voltage regulating energy saving spark machining pulse power supply. The pulse power supply includes rectification and filtering circuit, voltage regulating circuit, pulse converting and power amplifying circuit, voltage and current detecting circuit, pulse triggering circuit and PWM control circuit. The pulse power supply can provide no-load puncture voltage of about 100 V to the machining spark interval before puncture and machining maintenance voltage of about 25 V to the machining spark interval after puncture, and has the features of adaptive voltage regulation and equal current pulse width. The present invention can realize the independent regulation of pulse voltage, pulse width and pulse interval in wide ranges, and has no current limiting resistor with high power consumption and thus 2 times raised electric energy utilization rate.

Description

Technical field [0001] The invention relates to an electric spark machining pulse power supply in the field of mechanical machining. Background technique [0002] Pulse power supply is an important part of the EDM system, and its performance has a greater impact on the productivity, machining accuracy, surface processing quality, electrode loss and power utilization of EDM. [0003] The pulse power supply provides the energy required for EDM to remove materials and consumes more than 80% of the energy of the EDM machine tool. Since its generation, the EDM pulse power supply has experienced uncontrollable RC, RLC non-independent pulse power supplies, independent pulse power supplies with independent and isolated from each other for the discharge gap and DC power supply, and other derived on the basis of independent pulse power supplies. Pulse power supply, such as high and low voltage composite pulse power supply, multi-loop pulse power supply, equal pulse power supply, intelligen...

Claims

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Application Information

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IPC IPC(8): B23H1/02B23H7/20
Inventor 刘永红杜建华陈继明刘静
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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