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Finishing method of wire electric discharge machine and wire electric discharge machine

A technology of wire electric discharge and cutting machine, which is applied in the fine machining of wire electric discharge machine and the field of wire electric discharge machine, which can solve the problems of reducing the average voltage and achieve the effect of suppressing discharge damage

Active Publication Date: 2016-04-13
FANUC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] As mentioned above, there is a problem that the groove 22 is formed due to the approach of the wire electrode 1 relative to the workpiece 2
[0021] As a method of reducing the electrostatic attractive force 23, there is also a method of reducing the average voltage by extending the discharge suspension time (hereinafter referred to as "off time") that determines the ratio of the application time of the discharge voltage to the suspension time for a very long time, thereby reducing The method of electrostatic attraction, but even if the suspension time is extended, the electrostatic attraction 23 cannot be completely zero as long as the applied voltage for strong discharge is applied.

Method used

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  • Finishing method of wire electric discharge machine and wire electric discharge machine
  • Finishing method of wire electric discharge machine and wire electric discharge machine
  • Finishing method of wire electric discharge machine and wire electric discharge machine

Examples

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Embodiment Construction

[0048] Figure 6 It is a schematic configuration diagram showing an embodiment of the main body of the wire electric discharge machine of the present invention.

[0049] The winding drum 11 around which the wire electrode 1 is wound is given a predetermined low torque commanded in a direction opposite to the direction in which the wire electrode 1 is pulled out by the wire feed unit torque motor 10 . The electrode wire 1 conveyed from the winding drum 11 passes through a plurality of guide wheels (not shown), and utilizes the brake block 13 driven by the brake motor 12 to adjust the brake block 13 and drive with a wire feeding motor (not shown). The tension between the feed rollers 19.

[0050] The electrode wire 1 after passing through the brake block 13 passes through the upper wire guide 14, the lower guide wire 15 and the lower guide wheel 16, and is clamped by the pinch wheel 18 and the feed roller 19 driven by the wire feeding motor (not shown). hold, and finally recla...

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Abstract

In carrying out finish machining by a wire electric discharge machine, a move program for an approach area from a machining starting position to a machined shape is advanced in a discharge-off (dry-run) state, and a discharge-on state is established in a subsequent shape machining block. By doing this, formation of a gouged groove in a machined surface of a workpiece by an approach can be suppressed.

Description

technical field [0001] The invention relates to a finishing method of a wire electric discharge cutting machine and a wire electric discharge cutting machine. Background technique [0002] In the finishing machining of the wire electric discharge machine, the machining surface is cut by electrical discharge machining while gradually reducing the machining amount to about 30 to 1 μm several times from the previous rough machining surface to the final finishing machining. [0003] In this finishing machining, when the wire electrode is first approached to the surface of the workpiece to be processed from the machining start position to the actual machined shape (hereinafter, the work of the wire electrode approaching the machined surface of the workpiece is referred to as "approaching") , the discharge starts a few 10 μm before the final arrival position of the command position obtained by the command to move the wire electrode of the wire electric discharge machine, that is, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23H7/02
CPCB23H7/04B23H7/06
Inventor 荒川靖雄高山雄司
Owner FANUC LTD