Tool and method for processing plate-shaped workpieces
AssigneeTRUMPF Werkzeugmaschinen GmbH + Co. KG
InventorsMarkus Wilhelm, Takeshi Abiko
Life of this patent
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Abstract
A tool and a method for processing plate-shaped workpieces, in particular metal sheets. An upper tool and a lower tool are movable toward one another for processing a workpiece arranged in between. The upper tool has a clamping shank and a main body arranged on a common position axis. A processing tool is arranged on a main body so as to be situated opposite the clamping shank. The lower tool has a main body with a bearing surface for the workpiece and an opening within the bearing surface. The processing tool of the upper tool has at least one bending edge and at least one cutting edge, and the main body of the lower tool has at least one counterpart bending edge and at least one counterpart cutting edge.
Claims19
A tool for processing plate-shaped workpieces, the tool comprising:
- an upper tool and a lower tool movably disposed toward one another for processing a workpiece arranged in between said upper and lower tools;
- said upper tool having a clamping shank and a main body, arranged on a common position axis, and a processing tool mounted to said main body opposite said clamping shank;
- said upper tool being mounted for rotating said processing tool relative to said lower tool about the common position axis;
- said lower tool having a main body with a bearing surface for the workpiece and an opening formed within said bearing surface;
- said opening having a shape of a polygon with at least one counterpart cutting edge and at least two counterpart bending edges distributed about a circumference of said opening, and said at least two bending edges having different bending radii from one another;
- said processing tool of said upper tool being formed with a ram surface that is substantially orthogonal to the common position axis, at least one bending edge disposed for interaction with one of said at least two counterpart bending edges and at least one cutting edge disposed for interaction with said at least one counterpart cutting edge, said bending edge being adjoined by an inclined surface away from said bending edge and towards said common position axis, and said inclined surface enclosing an angle of less than 90° with said ram surface of said processing
- tool.
A method of processing a plate-shaped workpiece, the method comprising:
- providing an upper tool with a processing tool having a ram surface that is substantially orthogonal to a common position axis, at least one bending edge and at least one cutting edge, the bending edge being adjoined by an inclined surface away from the bending edge, towards the common position axis, and with the inclined surface enclosing an angle of less than 90° with the ram surface of the processing tool, and wherein the upper tool is movable by a stroke drive apparatus along a stroke axis in a direction of the workpiece for processing by the upper tool and in an opposite direction, and which is positionable along an upper positioning axis running perpendicular to the stroke axis, and moving the upper tool along the upper positioning axis by a drive arrangement;
- providing a lower tool, which is aligned with the upper tool and is positionable along a lower positioning axis which is oriented perpendicular to the stroke axis of the upper tool, and moving the lower tool along the lower positioning axis by a drive arrangement;
- actuating the drive arrangements by a controller for selectively moving the upper tool or the lower tool;
- positioning a workpiece part of the plate-shaped workpiece relative to a bearing surface of the lower tool;
- selecting one of at least two counterpart bending edges in accordance with a given bending radius thereof and aligning the bending edge of the upper tool and the one of the at least two counterpart bending edges of the lower tool with one another, and effecting at least one bending stroke movement during which the workpiece part is bent with the given bending radius and at an angle relative to the plate-shaped workpiece;
- and
- transferring the workpiece part that has been bent at an angle and/or the cutting edge of the upper tool and a counterpart cutting edge of the lower tool into a cutting position, and subsequently effecting a cutting stroke for punching out the workpiece part from the plate-shaped workpiece.
Dependencies are inferred from the claim text.