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Wire electrical discharge machine with anti-rust function

An electrical discharge machine and machining fluid technology, applied in electric machining equipment, metal machining equipment, circuits, etc., can solve problems such as insufficient current to achieve anticorrosion, shortened life of anticorrosion electrodes, and deterioration of workpieces.

Active Publication Date: 2016-06-22
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As mentioned above, when a voltage is applied to the workpiece and the anticorrosion electrode to prevent corrosion of the workpiece, when the current density of the workpiece is lower than a predetermined value, there is a problem that the current supplied from the anticorrosion electrode cannot sufficiently achieve corrosion protection. In addition, when the current density is too high, there are problems such as shortening the life of the anti-corrosion electrode or deteriorating the workpiece due to hydrogen generation.
Therefore, when the control of the current density is not performed, corrosion resistance or rust prevention cannot be sufficiently achieved by the size of the workpiece

Method used

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  • Wire electrical discharge machine with anti-rust function
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  • Wire electrical discharge machine with anti-rust function

Examples

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Embodiment Construction

[0017] First, in the following embodiments, the current density is a value obtained by dividing the current value of the current supplied from the anticorrosion power supply by a physical quantity related to the surface area of ​​the workpiece. When a voltage is applied to the workpiece and the anticorrosion electrode to prevent corrosion of the workpiece, when the current density of the workpiece is smaller than a predetermined value, there is a problem that the corrosion protection cannot be fully achieved. In addition, when the current density is too large, there is Shortened life of anti-corrosion electrodes or deterioration of workpiece due to hydrogen generation. Therefore, in electrical discharge machining, if the current density is not controlled in such a way that the current density for rust prevention supplied from the anti-corrosion power supply becomes constant by a predetermined value, the size of the workpiece, that is, the surface area, cannot sufficiently Anti...

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Abstract

The invention provides a wire electric discharge machine with antirust function. An electrical discharge machine applies a voltage to a workpiece and an anticorrosion electrode to preserve the workpiece. In such a way that the current density is constant, a reference current value proportional to the surface area of ​​the workpiece is set, and the voltage of the anti-corrosion power supply is controlled so that the anti-corrosion current is within a predetermined range.

Description

technical field [0001] The present invention relates to a wire electric discharge machine for rust-proofing workpieces. Background technique [0002] In a wire electrical discharge machine that uses water as a machining fluid, since the workpiece comes into contact with water, it is necessary to prevent rusting. As shown in the examples in Japanese Patent Laid-Open No. 5-220618 and Japanese Patent Laid-Open No. 2004-291206, a rust prevention method is disclosed, that is, an anti-corrosion electrode opposite to the workpiece is provided through a machining fluid, and the After the workpiece is set as the cathode and the anti-corrosion electrode is set as the positive electrode, the workpiece is rust-proofed by applying a voltage between the workpiece and the anti-corrosion electrode from an external power source. [0003] As mentioned above, when a voltage is applied to the workpiece and the anticorrosion electrode to prevent corrosion of the workpiece, when the current dens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/02B23H11/00
CPCB23H1/02B23H7/38B23H7/04
Inventor 松永伦明
Owner FANUC LTD
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