Apparatus for scavenging the erosion zone of spark-erosive cutting plants
First Claim
1. In a spark-erosive cutting plant having a wire or strip-like tool electrode and tool electrode guide means arranged above and below a workpiece to be machined for guiding the tool electrode through the workpiece and controllable for optionally setting the tool electrode at an angle relative to the workpiece during machining, an erosion zone being formed between the tool electrode and the workpiece, an apparatus for scavenging the erosion zone with a fluid scavenging medium during the spark-erosive machining of the workpiece comprising:
- a scavenging chamber located on at least one side of the workpiece and formed as a deformable annular sleeve surrounding the tool electrode, the scavenging chamber being operatively connected at one end to the tool electrode guide means by a substantially fluid tight seal; and
a circumferential slide ring means attached to the other end of the scavenging chamber and adapted to slideably seal against the workpiece surface around the tool electrode;
the scavenging chamber further comprising wall means for adapting the scavenging chamber to the position of the slide ring means on the workpiece surface during machining.
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Accused Products
Abstract
A scavenging chamber surrounds the electrode and is brought up to the erosion zone in the workpiece. A slide ring is fixed to the casing of the scavenging chamber and seals the latter with respect to the workpiece surface. The scavenging chamber is provided with a structure for adapting at least the casing portion carrying the slide ring to the slide ring orientation defined by the workpiece surface. Preferably the scavenging chamber is provided with controllable elements for defining the shape of the scavenging chamber casing, which elements can be in particular constructed as flexible annular diaphragms.
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Citations
16 Claims
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1. In a spark-erosive cutting plant having a wire or strip-like tool electrode and tool electrode guide means arranged above and below a workpiece to be machined for guiding the tool electrode through the workpiece and controllable for optionally setting the tool electrode at an angle relative to the workpiece during machining, an erosion zone being formed between the tool electrode and the workpiece, an apparatus for scavenging the erosion zone with a fluid scavenging medium during the spark-erosive machining of the workpiece comprising:
- a scavenging chamber located on at least one side of the workpiece and formed as a deformable annular sleeve surrounding the tool electrode, the scavenging chamber being operatively connected at one end to the tool electrode guide means by a substantially fluid tight seal; and
a circumferential slide ring means attached to the other end of the scavenging chamber and adapted to slideably seal against the workpiece surface around the tool electrode;
the scavenging chamber further comprising wall means for adapting the scavenging chamber to the position of the slide ring means on the workpiece surface during machining. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a scavenging chamber located on at least one side of the workpiece and formed as a deformable annular sleeve surrounding the tool electrode, the scavenging chamber being operatively connected at one end to the tool electrode guide means by a substantially fluid tight seal; and
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10. In a spark-erosive cutting plant having a wire or strip-like tool electrode and tool electrode guide means arranged above and below a workpiece to be machined for guiding the tool electrode through the workpiece and controllable for optionally setting the tool electrode at an angle relative to the workpiece during machining, an erosion zone being formed between the tool electrode and the workpiece, an apparatus for scavenging the erosion zone with a fluid scavenging medium during the spark-erosive machining of the workpiece comprising:
- a deformable, sleeve-like scavenging chamber operatively connected to at least one of the tool electrode guide means by a substantially fluid tight seal and surrounding the tool electrode between the guide means and the workpiece surface;
a substantially circular slide ring means attached to the scavenging chamber and adapted to slideably seal against the workpiece surface surrounding the tool electrode; and
a scavenging nozzle surrounding the tool electrode and located within the scavenging chamber for discharging a scavenging medium jet toward the erosion zone surrounding the tool electrode, the scavenging nozzle being fixed with respect to the guide means and acting on the slide ring means to assist in moving the slide ring means along the workpiece surface during machining to prevent interference with the tool electrode. - View Dependent Claims (11, 12, 13, 14, 15, 16)
- a deformable, sleeve-like scavenging chamber operatively connected to at least one of the tool electrode guide means by a substantially fluid tight seal and surrounding the tool electrode between the guide means and the workpiece surface;
Specification