Tools, machines, and methods for machining planar workpieces

A processing machine for machining planar workpieces, comprising:

• an upper tool that is moveable along a stroke axis by a stroke drive device in a direction towards or away from a workpiece to be processed by the upper tool, and is positionable along an upper positioning axis running perpendicular to the stroke axis;
• an upper drive assembly that displaces the upper tool along the upper positioning axis;
• a lower tool that is moveable along a lower stroke axis by a stroke drive device in a direction of the upper tool, and is positionable along a lower positioning axis oriented perpendicular to the stroke axis of the upper tool;
• a lower drive assembly that displaces the lower tool along the lower positioning axis;
• a controller configured to control the upper and lower drive assemblies;
• wherein a traversing movement of the upper tool along the upper positioning axis and a traversing movement of the lower tool along the lower positioning axis are controllable independently of each other;
• and
• a tool for machining a planar workpiece, comprising:
• a clamping shaft and an upper main body on the upper tool that lie on a common positioning axis;
• a tool body arranged opposite to the clamping shaft on the upper main body, the tool body comprising a bending edge;
• and
• a lower main body on the lower tool that receives a rotational body, which is rotatable around an axis of rotation running in parallel to the bending edge of the tool body and that is oriented perpendicular to the lower positioning axis,
• wherein the upper tool and the lower tool are movable towards and away from each other in a stroke direction for machining the workpiece arranged therebetween,
• wherein the upper main body defines a projection surface that is perpendicular to the common positioning axis and the bending edge of the tool body is externally adjacent tangentially to the projection surface or is outside the projection surface, and
• wherein the tool body has a base surface adjacent to the bending edge, an inclined surface adjacent to the bending edge, and a surface section opposite the bending edge that passes into the upper main body or is fastenable on the upper main body.

A method for machining planar workpieces, the method comprising:

• moving an upper tool along a stroke axis by a stroke drive device in a direction towards or away from a workpiece to be processed by the upper tool, wherein the upper tool is positionable along an upper positioning axis running perpendicular to the stroke axis, and is displaceable by an upper drive assembly along the upper positioning axis;
• moving a lower tool along a lower stroke by a stroke drive device in a direction of the upper tool, wherein the lower tool is positionable along a lower positioning axis oriented perpendicular to the stroke axis of the upper tool, and is displaceable by a lower drive assembly along the lower positioning axis;
• providing a controller to actuate the upper and lower drive assemblies;
• using a tool to process the workpieces, wherein the tool comprises:
• a clamping shaft and an upper main body on the upper tool that lie on a common positioning axis;
• a tool body arranged opposite to the clamping shaft on the upper main body, the tool body comprising a bending edge;
• and
• a lower main body on the lower tool that receives a rotational body, which is rotatable around an axis of rotation running in parallel to the bending edge of the tool body and that is oriented perpendicular to the lower positioning axis,
• wherein the upper tool and the lower tool are movable towards and away from each other in a stroke direction for machining the workpiece arranged therebetween,
• wherein the upper main body defines a projection surface that is perpendicular to the common positioning axis and the bending edge of the tool body is externally adjacent tangentially to the projection surface or is outside the projection surface,
• wherein the tool body has a base surface adjacent to the bending edge, an inclined surface adjacent to the bending edge, and a surface section opposite the bending edge that passes into the upper main body or is fastenable on the upper main body;
• and
• controlling at least one of the upper tool and the lower tool by a stroke movement where the positioning axes are spaced parallel to each other.