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Signal generation method for high-frequency narrow-pulse electrochemical machining power supply

A technology of signal generation and narrow pulse, which is applied in the field of signal generation of high frequency narrow pulse electrolytic machining power supply, and can solve the problems of metal material removal, grinding and polishing.

Inactive Publication Date: 2013-03-13
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the existing electrolytic machining, it cannot adapt to the removal, grinding, polishing, etc. of various metal materials.

Method used

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  • Signal generation method for high-frequency narrow-pulse electrochemical machining power supply
  • Signal generation method for high-frequency narrow-pulse electrochemical machining power supply
  • Signal generation method for high-frequency narrow-pulse electrochemical machining power supply

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The present invention is used for the signal generation method of high frequency narrow pulse electrolytic machining power supply, comprising the following steps:

[0022] Frequency and duty cycle digital adjustment principle:

[0023] First, use DDS direct frequency synthesis to generate 2-phase 1Hz-10MHz sine wave, use high-speed comparator to obtain square wave of the same frequency, this square wave is used as the reference clock pulse for frequency adjustment, and use CPLD to count the clock pulse from 0 to 99. Square waves with 0%~100% duty cycle are available upon request. The DDS frequency synthesizer is controlled by the single-chip microcomputer to change the final output frequency, and any duty cycle is realized by the single-chip computer outputting to the CPLD according to the specific value. Both specific parameters are digitally contro...

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Abstract

The invention discloses a signal generation method for a high-frequency narrow-pulse electrochemical machining power supply. The method comprises the following steps of: carrying out frequency and duty ratio digitalizing regulation, namely generating two phases of sine waves of 1Hz to 10MHz in a direct frequency synthesis manner by adopting DDS (Direct Digital Synthesis), acquiring square waves with the same frequency by using a high-speed comparator, counting clock pulses by using a CPLD (Complex Programmable Logic Device) and obtaining the square waves with 0% to 100% of the duty ratio as required; and 2) outputting waveforms, namely utilizing two sets of frequency and duty ratio regulating devices for generating high-frequency pulses and low-frequency pulses respectively to process two paths of signals, thereby obtaining five-type signals corresponding to five working modes of a direct-current power supply. The method provided by the invention can excellently satisfy requirements of a plurality of electrochemical machining modes such as removing, grinding and polishing of various metal materials during electrochemical machining.

Description

technical field [0001] The invention relates to a signal generation method, in particular to a signal generation method for a high-frequency narrow-pulse electrolytic machining power supply. Background technique [0002] Pulse current electrolytic machining can be divided into sine wave or rectangular wave according to its processing voltage waveform, and can be divided according to the frequency [0003] Divided into low frequency (tens of hertz), wide pulse (millisecond level) or high frequency (kHz ~ tens of kilohertz), narrow pulse (micro [0004] seconds). Pulse current electrolytic machining replaces the traditional DC continuous power supply with periodic intermittent power supply. [0005] The process of energizing and de-energizing leads to a series of changes in the physical and chemical properties of the ECM gap process, and the pulse [0006] The higher the frequency, the stronger the effect. [0007] In the existing electrolytic machining, it cannot adapt to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/135
Inventor 黄亮干为民
Owner CHANGZHOU INST OF TECH