Apparatus for forming a closed cut surface in a wall of a workpiece
AssigneeMaschinen- und Armaturen- J & W Muller, fabrik GmbH
InventorHans Noll
Life of this patent
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Abstract
The cutting apparatus is used to cut a hole in a workpiece such as a pipe of relatively large thickness. The burner is mounted on a carriage which is reciprocated along a radially directed carrier which rotates about an axis perpendicular to the carrier. Reciprocation of the carriage is controlled as a function of the rotation of the carrier about the axis. In addition, a cam causes pivoting of the burner in accordance with the reciprocation of the carriage along the carrier. Operation of the apparatus is such that the tip of the burner is held at a constant distance from the surface of the workpiece. A motor is also provided for moving the burner longitudinally of its axis.
Claims12
An apparatus for cutting a hole in a wall of a workpiece, said apparatus comprising
- a carrier mounted for rotation about an axis perpendicular to said carrier;
- a burner adjustably mounted on said carrier and having a tip at one end;
- first means for moving said burner along said carrier radially of said axis;
- a computer connected to said means for controlling said means as a function of the rotation of said burner about said axis;
- and
- second means for tilting said burner in a predetermined program in a plane coincident with said carrier and said axis as a function of the radial movement of said burner relative to said carrier whereby said tip is held at a constant distance from a surface of the workpiece wall.
An apparatus for forming a closed cut surface in a wall of a workpiece, said apparatus comprising
- a carrier mounted for rotation about a first axis perpendicular to said carrier;
- a carriage movably mounted on said carrier;
- a burner mounted on said carriage and having a tip at one end;
- a motor for moving said carriage along said carrier radially of said axis;
- means connected to said motor for controlling said motor as a function of the rotation of said burner and carrier about said axis;
- and
- second means for tilting said burner about a pivot axis perpendicular to the plane of said carrier as a function of the movement of said burner and carriage on said carrier whereby said burner maintains a constant angle relative to said first axis.
Dependencies are inferred from the claim text.