Spark erosion machine with coupled wire electrode guidance heads
First Claim
1. A spark erosion machine using a wire-like tool electrode and including two spaced apart, coupled wire guidance heads for guiding the tool electrode in an erosion zone between the guidance heads, wherein each wire guidance head is pivotable in at least one plane about a pivot point for that plane;
- a hydraulic pivot drive means associated with each guidance head for each plane of pivot for pivoting the guidance head in the pivot plane; and
a hydraulic control means connected to each of the two pivot drive means for each plane of pivot for setting, in synchronism, the pivot of each guidance head while maintaining the axes of the wire guidance heads substantially parallel.
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Accused Products
Abstract
A spark erosion machine having two spaced apart wire electrode guidance heads, which are forcibly coupled with one another in such a way that the guidance heads are always coaxial to one another. The forced coupling takes place by a hydraulic system that includes adjusting cylinders for the guidance heads and associated control cylinders. The piston rods of the adjusting cylinders are coupled to one another. By the use of hydraulic circuits, a displacement of the piston rods of the control cylinders leads to a corresponding displacement of the piston rods of the associated adjusting cylinders, so that the orientation of both wire guidance heads is always the same. As a result of this hydraulic system, there is no need to couple the upper and lower wire guidance heads by a mechanical linkage, so that the working zone between the heads and the lateral area for the workpiece connected thereto can be of a random magnitude.
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Citations
11 Claims
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1. A spark erosion machine using a wire-like tool electrode and including two spaced apart, coupled wire guidance heads for guiding the tool electrode in an erosion zone between the guidance heads, wherein each wire guidance head is pivotable in at least one plane about a pivot point for that plane;
- a hydraulic pivot drive means associated with each guidance head for each plane of pivot for pivoting the guidance head in the pivot plane; and
a hydraulic control means connected to each of the two pivot drive means for each plane of pivot for setting, in synchronism, the pivot of each guidance head while maintaining the axes of the wire guidance heads substantially parallel.
- a hydraulic pivot drive means associated with each guidance head for each plane of pivot for pivoting the guidance head in the pivot plane; and
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2. A spark erosion machine using a wire-like tool electrode and including two forcibly coupled, pivotable wire guidance heads which are spaced from one another for guiding the electrode therebetween, wherein for each pivot plane of a wire guidance head there is provided a hydraulic adjusting cylinder, whose piston rod is operatively connected to its associated wire guidance head for pivoting the wire guidance head in the pivot plane;
- each adjusting cylinder is hydraulically connected to an associated control cylinder in such a way that a displacement of the control cylinder piston leads to a corresponding displacement of the piston of the associated adjusting cylinder; and
the control cylinders associated with the adjusting cylinders for the two wire guidance heads in each pivot plane are interconnected by their piston rods, the latter being controllably displaceable to effect a pivot of the wire guidance heads while maintaining the guidance heads substantially parallel. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
- each adjusting cylinder is hydraulically connected to an associated control cylinder in such a way that a displacement of the control cylinder piston leads to a corresponding displacement of the piston of the associated adjusting cylinder; and
Specification