Wire electric discharge machine
First Claim
1. A wire electric discharge machine for machining a workpiece by electric discharge between the workpiece and a wire, comprising:
- an upstream wire guide from which the wire is fed;
a downstream wire guide unit;
a wire turning unit having a first wire tuning guide and a second wire turning guide, said first wire turning guide turning the wire from said upstream wire guide towards said second wire turning guide, and said second wire turning guide turning the wire turned by said first wire turning guide towards said downstream wire guide.
1 Assignment
0 Petitions
Accused Products
Abstract
A wire electric discharge machine capable of preventing breakage of a wire and perform an automatic wire connection/extension process in machining a wall portion of a concave, a groove, a hole, etc. formed on the workpiece. A wire turning unit is attached to one of an upstream wire guide unit and a downstream wire guide unit. The wire turning unit has a first wire turning guide and a second wire turning guide. The first wire turning guide turns the wire fed from the upstream wire guide unit towards the second wire turning guide, and the second wire turning guide turns the wire towards the downstream wire guide unit. After aligning the upstream wire guide unit and the downstream wire guide unit, the wire is automatically connected therebetween. The upstream wire guide unit is moved such that the wire is successively caught by the first wire turning guide and the second wire turning guide. The number of turnings of the wire and thus a load exerted on the wire are reduced to lower possibility of breakage of the wire.
10 Citations
14 Claims
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1. A wire electric discharge machine for machining a workpiece by electric discharge between the workpiece and a wire, comprising:
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an upstream wire guide from which the wire is fed;
a downstream wire guide unit;
a wire turning unit having a first wire tuning guide and a second wire turning guide, said first wire turning guide turning the wire from said upstream wire guide towards said second wire turning guide, and said second wire turning guide turning the wire turned by said first wire turning guide towards said downstream wire guide. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wire electric discharge machine for machining a workpiece by electric discharge between the workpiece and a wire, comprising:
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an upstream wire guide from which the wire is fed;
a downstream wire guide;
a wire turning unit for turning the wire from said upstream wire guide towards said downstream wire guide such that a projected position of said upstream wire guide is displaced from a projected position of said downstream wire guide on a plane perpendicular to a feeding direction of the wire. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification