Tools, machines, and methods for machining planar workpieces

Patent metadata

Field	Value
Publication number	US-11219936-B2
Application number	US-201916364398-A
Country	US
Kind code	B2
Filing date	Mar 26, 2019
Priority date	Sep 26, 2016
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A tool for machining a planar workpiece, comprising an upper tool having a clamping shaft and an upper main body 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 tool having a lower main body that receives a rotational body that is rotatable around an axis of rotation running in a direction of the bending edge of the tool body, 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, and wherein the upper main body defines a projection surface that is perpendicular to the positioning axis and the bending edge of the tool body is adjacent tangentially to the projection surface or is outside the projection surface.

First claim

What is claimed is:

1. A tool for machining a planar workpiece, comprising:
an upper tool positionable along an upper positioning axis and having a clamping shaft and an upper main body 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 tool having a lower main body positionable along a lower positioning axis that is oriented parallel to the upper positioning axis,
wherein the lower tool receives a rotational body, which is rotatable around an axis of rotation that is oriented perpendicular to the lower positioning axis and that runs parallel to the bending edge of the tool body,
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.

2. The tool of claim 1 , wherein the projection surface is defined by a circumferential surface of the upper main body.

3. The tool of claim 1 , wherein the common positioning axis lies in a connection section of the tool body.

4. The tool of claim 1 , wherein a longitudinal axis of the tool body is inclined relative to the common positioning axis on the upper tool.

5. 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.

6. The machine of claim 5 , wherein one or both of the upper tool and lower tool is independently controllable by one or both of a stroke movement or a rotational movement about the positioning axis.

7. 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.

8. The method of claim 7 , further comprising controlling a distance of the positioning axes between the lower tool and the upper tool that results from a distance of the bending edge to the positioning axis on the upper main body of the upper tool and at least of a material thickness of the workpiece to be machined.

9. The method of claim 7 , further comprising controlling a stroke movement between the upper tool and the lower tool, the stroke movement having a first stroke phase where the upper tool is controlled along a stroke movement outside the stroke axis, and a second stroke phase that is introduced along the stroke axis shortly before the bending edge of the tool body rests on the workpiece or when resting on the workpiece.

Assignees

• Trumpf Werkzeugmaschinen Gmbh Co Kg

Inventors

• Kappes Jens
• Hank Rainer
• Tatarczyk Alexander
• Ockenfuss Simon
• Wilhelm Markus
• Klinkhammer Marc
• Schindewolf Leonard
• Traenklein Dennis
• Neupert Joerg
• Bitto Dominik
• Maatz Markus
• Jakisch Christian

Classifications

• B21D5/042

  With a rotational movement of the bending blade · CPC title

• B21D35/001

  Shaping combined with punching, e.g. stamping and perforating · CPC title

• B21D19/086 Primary

  with rotary cams · CPC title