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Electrochemical machining method and device for pulsating flow field tube electrode

A processing method and technology of electrolytic processing machine tools, which are applied in the direction of electrochemical processing equipment, metal processing equipment, and the supply of processing working media, can solve the problems of inability to popularize fixed cathodes, poor processing stability, and complex device structures, etc., and achieve Improve electrochemical reaction efficiency, improve flow field, simple effect of pulsating pressure

Active Publication Date: 2011-09-28
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the device is complicated, and the reciprocating change of the size of the gap will cause electrolyte backflow, flow field disorder in the gap, and poor processing stability; this method cannot be extended to the occasion of fixed cathode electrolytic processing

Method used

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  • Electrochemical machining method and device for pulsating flow field tube electrode
  • Electrochemical machining method and device for pulsating flow field tube electrode
  • Electrochemical machining method and device for pulsating flow field tube electrode

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Experimental program
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Effect test

Embodiment Construction

[0024] figure 1 In the process, the electrolyte enters the tube electrode 9 with a certain pressure, injects into the processing gap at a high speed, takes away the electrolysis product and Joule heat, and completes the renewal of the electrolyte between the electrodes. The localization of the electrolytic machining can be improved through the insulation of the side wall of the tube electrode 9 .

[0025] figure 2 In the shown pulsating flow field tube electrode electrolytic machining system, the pulse power supply 15, the spindle feed device 7, the electrode fixture 6, the machine tool body 8, the working box 12 and the workbench 10 form the electrolytic machining machine tool hardware system; the motion control card 14, The data acquisition card 17, the current sensor 16, the industrial computer 18 and related circuits constitute the control system of the electrolytic machining machine tool; the electrolytic liquid storage tank 1, the one-way valve 2, the pressure pump 3, ...

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Abstract

The invention relates to an electrochemical machining method and an electrochemical machining device for a pulsating flow field tube electrode, and belongs to the technical field of electrochemical machining. The method comprises the following steps of: 1, adjusting the flow and the pressure by controlling an action of a spool of a servo valve (9) by a pressure servo execution module (4), and outputting a pulsating electrolyte solution to an electrochemical machining area; 2, modulating a control instruction phase by using a control system of an electrochemical machining machine tool according to a pressure and voltage feedback signal, so that the pressure of the machining area is matched with the voltage pulse rhythm; and 3, dynamically adjusting a feeding speed and the machining voltage by using the control system of the electrochemical machining machine tool so as to machine a hole with a variable section in regular change. The method and the device provided by the invention have important meaning for increasing the flocculent product discharge rate and the machining stability of the electrochemical machining of a neutral saline solution deep hole tube electrode.

Description

Technical field [0001] The electrolytic machining method and device of the pulsating flow field tube electrode of the present invention belong to the technical field of electrolytic machining. Background technique [0002] When Shaped tube electrochemical drilling (STED) is in progress, the electrolyte flows out from the hollow metal tube (round tube or special-shaped tube) at high speed and fills the entire machining gap. The cathode of the tool is fed, and the anode of the workpiece is dissolved under the action of the electrochemical reaction and gradually forms a hole pattern consistent with the cross section of the metal tube. At the same time, the electrolyte will carry the reaction product and Joule heat out of the processing area. This process has the characteristics of not being limited by the mechanics and mechanical properties of the workpiece material, good processing quality, and no loss of tools. It has important applications in aerospace, automobile, mold manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H9/14B23H3/00B23H3/10
Inventor 房晓龙朱荻曲宁松
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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