Plasma cutting machine comprises a plasma cutting head, which is provided to release a plasma cutting beam over a beam nozzle in the direction of a beam axis and is rotatably arranged in a cutting head holder to a rotation axis

摘要

The plasma cutting machine comprises a plasma cutting head (SK), which is provided to release a plasma cutting beam over a beam nozzle in the direction of a beam axis, is rotatably arranged in a cutting head holder (KH) to a rotation axis (RA) aligned with the beam axis and has a tube arrangement with a tube at its axial end turned away from the jet nozzle. The cutting head holder is controllably oriented relative to a carrier arrangement rotatable around a rotation axis in changeable manner in such a way that the alignment of rotation axis is adjustable relative to pivot axis (DA). The plasma cutting machine comprises a plasma cutting head (SK), which is provided to release a plasma cutting beam over a beam nozzle in the direction of a beam axis, is rotatably arranged in a cutting head holder (KH) to a rotation axis (RA) aligned with the beam axis and has a tube arrangement with a tube at its axial end turned away from the jet nozzle. The cutting head holder is controllably oriented relative to a carrier arrangement rotatable around a rotation axis in changeable manner in such a way that the alignment of rotation axis is adjustable relative to pivot axis (DA) of different pivoting angle within a limited pivoting angle area. The plasma cutting head is arranged in the cutting head holder in freely-rotatable manner in such a way that axial projection of the beam nozzle projects from the rotation axis in the alignment of the pivot axis slanted against the rotation axis in related to the pivot axis and the plasma cutting head lies on the side of the beam nozzle, and/or the carrier arrangement comprises a hollow shaft rotatable around the pivot axis. The tube arrangement is guidable through the hollow shaft. The cutting head holder is connected over a swiveling joint arrangement with the carrier arrangement. The swiveling axis of the swiveling joint arrangement passes vertically to rotation axis and pivot axis through a common intersection. The swiveling joint arrangement comprises two swivel bearings spaced in the direction of the swiveling axis. The tube arrangement passes in related to the swiveling axis (SA) to axial direction between the axial positions of both swivel bearings. The cutting head holder comprises a sector gear to the swiveling axis as part of a swiveling drive arrangement. The sector gear is connected to a grip with a gear of a first hollow shaft, which is rotatable relative to the swiveling joint arrangement around the pivot axis. The swiveling joint arrangement is arranged to the carrier shaft rotatable around the pivot axis. The carrier shaft is formed through a second hollow shaft. The tube arrangement is guided through the first and/or the second hollow shaft. The carrier arrangement is guidable in three orthogonal directions in translatoric manner. The tube arrangement comprises an anti-rotation means, which has a high torsion stability than the tube and prevents a distortion of the tube during rotation of the carrier arrangement around the pivot axis. The anti-rotation means is connected with the plasma cutting head in torque-proof manner, surrounds the tube, is formed through a twisting cover tube or a segment chain and consists of a flexible shaft.