Wire-cut electric discharge machine

An EDM wire and cutting machine technology, which is used in electrode manufacturing, electric machining equipment, metal processing equipment, etc., can solve the problems such as the inability to obtain the linearity of tension fluctuation suppression, the inability to suppress large wire tension fluctuations, and the difficulty in suppressing characteristics. , to achieve the effect of easy installation and maintenance, good linearity, and adjustment and suppression characteristics

Inactive Publication Date: 2005-11-02
FANUC LTD
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  • Abstract
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Problems solved by technology

Therefore, since the effect of suppressing fluctuations in wire tension varies depending on the amount of fluctuations, there is a problem that good linearity in suppressing tension fluctuations cannot be obtained.
In addition, since the fluctuation range that can be suppressed is limited by the fluctuation amount of the spring part, there is a problem that the large wire tension fluctuation cannot be suppressed.
[0013] Moreover, since the tension fluctuation suppression characteristic depends only on the elastic characteristics of the spring portion, it is difficult to adjust the tension fluctuation suppression characteristic for different wire tension fluctuation ranges.

Method used

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Embodiment Construction

[0036] figure 1 It is a figure for demonstrating the schematic structure of the wire electric discharge machine of this invention. The wire electric discharge machine 1 is the same as the prior art shown in the above-mentioned FIG. 16. A wire-feeding system for supplying and winding-up the wire in the order of taking up the bobbin 17, in which a lowering wire is set between the wire supplying bobbin 11 and the braking roller 12 The device (wire tension fluctuation reduction device) 2 for the fluctuation of the tension of the wire is used to control the tension fluctuation of the wire generated by the brake roller 12 on the wire supply side by the wire tension fluctuation reduction device 2.

[0037] exist figure 1On the side closer to the wire supply side than the brake roller 12, if the tension of the wire changes due to changes in the rotational speed of the wire supply bobbin 11 or frictional changes in the brake roller 12, etc., the The wire tension fluctuation reduci...

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Abstract

To effectively restrict wire tension fluctuation generated on the wire supply side from a brake roller.

Description

technical field [0001] The present invention relates to a wire electric discharge machine, and particularly relates to a structure for reducing vibration of a wire electrode. Background technique [0002] In the wire electric discharge machine, if the wire tension fluctuates and the wire vibrates, the processing accuracy will decrease, and the surface accuracy and straightness of the workpiece will decrease. Conventionally, in order to control the vibration of such a wire, it was necessary to adjust processing conditions such as current and voltage, set a processing speed, or apply tension to the wire. As a known method of giving wire tension, friction is applied to the rollers of the wire-feeding system to make the rollers difficult to rotate, so that the rollers are braked and tension is given to the wires. [0003] When the vibration of the wire is reduced by applying tension to the wire, there is a problem that the tension of the wire fluctuates due to fluctuations in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23H7/10
CPCB23H7/104B23H7/10
Inventor 喜多佑树高山雄司牧野良则
Owner FANUC LTD
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