Study on machining accuracy in Wire-EDM. Improvement of machining accuracy of corner parts in rough-cutting.

Magara, Takuji; Yatomi, Tsuyoshi; Kobayashi, Kazuhiko

doi:10.2526/jseme.25.23

Cited by 7 publications

(7 citation statements)

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“…In a report on finishing process by Magara et al [14], the averaged gap-voltages, V g , were proven to be linearly dependent on the sparking frequency, f T . The relationship can be described with a simple equation V g = V o − f T , where V o is the open voltage and is a positive coefficient depending on the electrical conditions.…”

Section: Resultsmentioning

confidence: 99%

“…But the barrelshape inaccuracy of workpiece still existed, since wire deflection was not improved significantly in the proposed strategies. Recently, Magara et al [13] showed that wire deflection can be significantly reduced by changing machining conditions such as feedrate and off-time. By so doing, both geometrical accuracy and straightness along workpiece height were improved.…”

Section: Introductionmentioning

confidence: 99%

“…However, their strategy was quite intuitive and there were no analytical bases for the tuning of machining conditions. In their second report on the finish-cutting process [14], the metal removal, which was defined as the ratio of the removal area with respect to speed of wire centre, was calculated. However, the general mechanism of metal removal in rough cutting was still not exposed.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fundamental geometry analysis of wire electrical discharge machining in corner cutting

Hsue

Liao²,

1999

International Journal of Machine Tools and Manufacture

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fundamental geometry analysis of wire electrical discharge machining in corner cutting

Hsue

Liao²,

1999

International Journal of Machine Tools and Manufacture

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“…A different method is required to improve the accuracy of this corner R. For the improvement of the corner accuracy, Magara et a1. 2) and Hsue et a1. 3) proposed control methods whereby the wire deflection is reduced by decreasing the power at the corner.…”

Section: Introductionmentioning

confidence: 93%

Combined Power and Path Control Method to Improve Corner Accuracy of Rough Cuts by Wire EDM (2st Report)

2003

IJEM

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We describe a control method for improving the accuracy of the small-radius concave corner R of rough cuts by wire electrical discharge machining. A well-known pulse interval time control method has an advantage in terms of corner precision but it takes a long time to cut the corner. In this report, types of control that reduce the machining time of this corner R are examined. Pulse interval time control is combined with servo voltage control and a simple program path modification method. The proposed combined control method is found to be useful for improving the corner accuracy and reducing the machining time. The machining time is reduced from 90 to 28 seconds. The residual error of the corner R is reduced to within 15 11 m. The procedure and equations used to calculate the control values are described.

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“…This is mainly due to wire deflection during EDMI). For the improvement of the corner accuracy, Magara et aL 2) proposed a control whereby the wire deflection is decreased by increasing the pulse interval time at the corner. Hsue et aL 3) proposed a pattern for varying EDM parameters to decrease the wire deflection.…”

Section: Introductionmentioning

confidence: 99%

Combined Power and Path Control Method to Improve Corner Accuracy of Rough Cuts by Wire EDM (1st Report)

2003

IJEM

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In this paper we propose a simultaneous power and path control method to improve the accuracy of a convex corner, convex corner R and large-radius concave corner R of rough cuts by wire electrical discharge machining. In the method, the program path is modified so that the error of the corner on a plane at the desired height of the workpiece can be zero. The discharge power is simultaneously adjusted so that the error of the corner on a plane at another desired height of the workpiece decreases to within an allowable value. The strategy of the contro~ equations to calculate control values and experimental results are reported.

show abstract

Study on machining accuracy in Wire-EDM. Improvement of machining accuracy of corner parts in rough-cutting.

Cited by 7 publications

References 0 publications

Fundamental geometry analysis of wire electrical discharge machining in corner cutting

Fundamental geometry analysis of wire electrical discharge machining in corner cutting

Combined Power and Path Control Method to Improve Corner Accuracy of Rough Cuts by Wire EDM (2st Report)

Combined Power and Path Control Method to Improve Corner Accuracy of Rough Cuts by Wire EDM (1st Report)

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