Bending tool and gripping device for manipulating the bending tool

Patent metadata

Field	Value
Publication number	US-11260442-B2
Application number	US-201515502627-A
Country	US
Kind code	B2
Filing date	Aug 11, 2015
Priority date	Aug 12, 2014
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

The invention concerns a bending tool ( 6 ) with an actuating element ( 19 ) accessible outside the tool receptacle, with coupled to it a locking element ( 20 ) with a locking catch ( 21 ) for securing the bending tool ( 6 ) in the tool receptacle. The first end portion ( 32 ) of the actuating element ( 19 ) has an actuating face ( 33 ) arranged on the end side and the second end portion ( 34 ) of the actuating element ( 19 ) has an actuating recess ( 35 ).
The invention further concerns a gripping device ( 14 ) for manipulating a bending tool ( 6 ), comprising a first gripping arm ( 59 ) and a second gripping arm ( 60 ) displaceable relative to the first gripping arm ( 59 ) in the clamping direction ( 64 ), said gripping arms ( 59 ) being formed to engage in a gripping groove ( 23, 24 ) of the bending tool ( 6 ) and to clamp the bending tool ( 6 ). Also formed is an unlocking member ( 65 ) for actuating an actuating element ( 19 ) of the bending tool ( 6 ), said unlocking member ( 65 ) being longitudinally displaceable normally to the clamping direction ( 64 ) relative to the gripping arms ( 59, 60 ).

First claim

The invention claimed is:

1. Bending tool for insertion in a tool receptacle, the bending tool comprising:
a tool body comprising a first gripping groove and a second gripping groove arranged opposite to each other,
a locking element comprising a locking catch, the locking element being disposed in and/or on the tool body, and
an actuating element coupled to the locking element, the actuating element being movable between a base position and an actuating position, the base position corresponding to a locked position of the locking element, the actuating position corresponding to an unlocked position of the locking element, the actuating element having a first end portion and a second end portion, the first end portion having an actuating face, the second end portion having an actuating recess,
wherein the first end portion of the actuating element is accessible in a region of the first gripping groove and the second end portion of the actuating element is accessible in a region of the second gripping groove,
wherein the actuating recess is configured such that a gripping catch of a gripping device for manipulating the bending tool can engage in the actuating recess of the actuating element to pull the actuating element out of the base position into the actuating position, and
wherein the first end portion of the actuating element is rigidly connected to the second end portion of the actuating element, such that when the gripping catch of the gripping device engages in the actuating recess and pulls the actuating element, the actuating face and the actuating element are moved out of the base position into the actuating position.

2. Bending tool as in claim 1 , wherein the actuating element is rotationally symmetric in a region of the second end portion, with the actuating recess configured as a circular groove.

3. Bending tool as in claim 1 , wherein the actuating element comprises a first actuating component and a second actuating component,
wherein the first end portion of the actuating element is arranged at the first actuating component,
wherein the second end portion of the actuating element is arranged at the second actuating component, and
wherein the first actuating component and the second actuating component are joined together such that the locking element is clamped between the first actuating component and the second actuating component.

4. Bending tool as in claim 3 , wherein the second actuating component has a screw section that is screwed into a threaded hole in the first actuating component, with the screw section then having a projection for clamping the locking element.

5. Bending tool as in claim 3 , wherein the second actuating component has a guide section that is rotationally symmetric and said guide section is received in a through-hole in the tool body.

6. Bending tool as in claim 5 , wherein the second actuating component has a screw section that is screwed into a threaded hole in the first actuating component, with the screw section then having a projection for clamping the locking element, and
wherein the guide section is connected to the screw section, with an external diameter of the guide section being larger than an external diameter of the screw section and with a circular ring projection being connected to the guide section.

7. Bending tool as in claim 1 , wherein the first gripping groove and the second gripping groove have a dovetail shape and are arranged parallel to each other.

8. Bending tool as in claim 1 , wherein the tool body comprises a centering recess that widens, the centering recess being in a middle of the first and the second gripping groove.

9. Bending tool as in claim 1 , further comprising a compression spring arranged in a spring receptacle in the tool body, wherein the compression spring acts on a back of the locking element.

10. A system comprising:
a bending tool for insertion in a tool receptacle, the bending tool comprising:
a tool body comprising a first gripping groove and a second gripping groove arranged opposite to each other,
a locking element comprising a locking catch, the locking element being disposed in and/or on the tool body, and
an actuating element coupled to the locking element, the actuating element being movable between a base position and an actuating position, the base position corresponding to a locked position of the locking element, the actuating position corresponding to an unlocked position of the locking element, the actuating element having a first end portion and a second end portion, the first end portion having an actuating face, the second end portion having an actuating recess, and

a gripping device for manipulating the bending tool, the gripping device comprising:
a first gripping arm and a second gripping arm that is displaceable relative to the first gripping arm in a clamping direction, the first and second gripping arms being configured to engage in the first gripping groove or the second gripping groove, respectively, in the tool body of the bending tool and to clamp the bending tool,
an unlocking member for actuating the actuating element of the bending tool, the unlocking member being longitudinally displaceable normally to the clamping direction relative to the first and second gripping arms, and
a gripping catch arranged on the unlocking member,

wherein the first end portion of the actuating element is accessible in a region of the first gripping groove and the second end portion of the actuating element is accessible in a region of the second gripping groove,
wherein the actuating recess is configured such that the gripping catch of the gripping device for manipulating the bending tool can engage in the actuating recess of the actuating element to pull the actuating element out of the base position into the actuating position, and
wherein the first end portion of the actuating element is rigidly connected to the second end portion of the actuating element, such that when the gripping catch of the gripping device engages in the actuating recess and pulls the actuating element, the actuating face and the actuating element are moved out of the base position into the actuating position.

11. The system as in claim 10 , wherein the unlocking member is mounted on the second gripping arm by a non-turning longitudinal guide, through which the unlocking member is positioned longitudinally displaceably on the second gripping arm.

12. The system as in claim 10 , wherein the first gripping arm and the second gripping arm each have a respective recess in a center of a gripping section, with two gripping fingers arranged on the first gripping arm and the second gripping arm through the respective recess, with the unlocking member being moveable in a free space within the recesses.

13. The system as in claim 10 , further comprising a centering protrusion arranged in the gripping section of the first gripping arm that acts together with a centering recess of the bending tool and wherein the tool body of the bending tool comprises the centering recess that widens, the centering recess being in a middle of the first and the second gripping groove.

14. The system as in claim 10 , wherein a front end portion of the first gripping arm has a wear protection element, with a wearing face of the wear protection element oriented parallel to the clamping direction.

15. The system as in claim 10 , wherein the second gripping arm is displaceable relative to the first gripping arm by a first actuator.

16. The system as in claim 15 , wherein the unlocking member is longitudinally displaceable by a second actuat

Assignees

• Trumpf Maschinen Austria Gmbh & Co Kg

Inventors

• Denkmeier Thomas
• Skopljak Melvin

Classifications

• Y10T483/1729

  Reciprocating tool machine tool [e.g., broaching machine, shaping machine, etc.] · CPC title

• B21D5/0236

  Tool clamping · CPC title

• B21D5/0209 Primary

  Tools therefor · CPC title

• B21D37/14

  Particular arrangements for handling and holding in place complete dies · CPC title

• B21D5/0254 Primary

  Tool exchanging · CPC title