Method apparatus for generating multiple sparks for an electrical discharge wire cutting machine
First Claim
1. An apparatus for controlling the flow of electrical energy between an electrically conductive piece part and a wire electrode of an electrical discharge wire cutting machine, comprising:
- a pulse type power supply having first and second leads of opposite polarity, said first lead being electrically connected to said piece part and said second lead having first and second portions connected to said wire electrode at two separate spaced apart locations;
first and second storage means connected between said first lead line and said first and second portions of said second lead line; and
,means for electrically isolating said first and second portions of said second lead line whereby said first and second portions of said second lead line are electrically independent from one another and whereby electrical energy may flow independently through said first and second portions of said second lead line.
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Accused Products
Abstract
An electrical discharge wire cutting machine (EDWC) includes an apparatus for controlling the flow of electrical energy between an electrically conductive piece part and a wire electrode of the EDWC machine. A pulse type power supply has first and second leads of opposite polarity with the first lead being electrically connected to the piece part and the second lead having first and second portions connected to the wire electrode at two separate, spaced-apart locations. Diodes electrically isolate the first and second portions of the second lead line whereby the first and second portions of the second lead line are electrically independent from one another. Further, first and second independently controllable arrays of capacitors are connected between the first lead line and the first and second portions of the second lead line respectively. The capacitance of these arrays is controllably adjustable to a range of values suitable for the instantaneous cutting conditions.
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Citations
21 Claims
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1. An apparatus for controlling the flow of electrical energy between an electrically conductive piece part and a wire electrode of an electrical discharge wire cutting machine, comprising:
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a pulse type power supply having first and second leads of opposite polarity, said first lead being electrically connected to said piece part and said second lead having first and second portions connected to said wire electrode at two separate spaced apart locations; first and second storage means connected between said first lead line and said first and second portions of said second lead line; and
,means for electrically isolating said first and second portions of said second lead line whereby said first and second portions of said second lead line are electrically independent from one another and whereby electrical energy may flow independently through said first and second portions of said second lead line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An apparatus for controlling the flow of electrical energy between an electrically conductive piece part and a wire electrode of an electrical discharge wire cutting machine, comprising:
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a pulse type power supply having first and second leads of opposite polarity, said first lead being electrically connected to said piece part and said second lead having first and second portions connected to said wire electrode at two separate spaced apart locations; first and second diodes respectively disposed in said first and second portions of said second lead line; first and second pluralities of capacitors disposed between said first lead line and said first and second portions of said second lead line respectively; switching means for controllably connecting each of said capacitors to said first lead line and said first and second portions of said second lead line respectively in response to receiving a control signal; and means for monitoring preselected parameters of said electrical discharge wire cutting machine, determining the value of said control signals in response to the values of the preselected parameters, and delivering said control signals to enable said switching means to connect preselected combinations of said capacitors between said first lead line and said first and second portions of said second lead line respectively.
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Specification