Production installation having a clamping tool and method for adapting a total length of a bending edge of the clamping tool

Patent metadata

Field	Value
Publication number	US-11065660-B2
Application number	US-201716461873-A
Country	US
Kind code	B2
Filing date	Dec 4, 2017
Priority date	Dec 6, 2016
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A production installation for producing workpieces from sheet metal by forming in a bending operation includes a bending machine and a clamping tool having at least one lower clamping jaw and an upper clamping jaw set including first upper clamping jaws and a second upper clamping jaw. The second upper clamping jaw has a clamping jaw part at each of the two second upper clamping jaw end sections, the clamping jaw parts being movable from a working to a pull-out position. At least one first upper clamping jaw is arranged on both sides of the second upper clamping jaw. The first upper clamping jaws have a first horn at each of the first end regions of the first upper clamping jaws facing away from the second upper clamping jaw. A method adapts a total length of a bending edge of a clamping jaw set of this production installation.

First claim

The invention claimed is:

1. A production installation for producing workpieces from sheet metal by forming in a bending operation, comprising:
a bending machined with a fixed machine frame, a lower clamping beam and with an upper clamping beam, wherein at least one of the clamping beams is adjustable relative to the machine frame in order to clampingly hold the workpiece to be manufactured,
a clamping tool with at least one lower clamping jaw and with an upper clamping jaw set from comprising several first upper clamping jaws and at least one second upper clamping jaw, and each of the at least one lower clamping jaw, the first upper clamping jaws, and the at least one second upper clamping jaw comprising a base body, wherein the at least one lower clamping jaw is held on the lower clamping beam and the first upper clamping jaws and the at least one second upper clamping jaw of the upper clamping jaw set are held on the upper clamping beam, and wherein the at least one second upper clamping jaw in a direction of a longitudinal extension of the clamping beams on a first end section comprises a first clamping jaw part movable relative to its base body from a working position to a pull-out position, wherein a longitudinal extension of the upper clamping jaw set is shorter in the pull-out position than in the working position, and
wherein a bending edge aligned in the direction of the longitudinal extension of the clamping beams is formed by the upper clamping jaw set when the first upper clamping jaws are in the working position, and a first partial bending edge of the bending edge is respectively formed by each first upper clamping jaw as well as a second partial bending edge is formed by the at least one second upper clamping jaw in the working position, and
a bending unit, said bending unit being adjustable relative to the clamping tool for performing a bending operation,
wherein
the at least one second upper clamping jaw further comprises a second clamping jaw part movable relative to its base body from the working position in the pull-out position on its second end section arranged at a distance from the first end section in the direction of the longitudinal extension of the clamping beams,
at least one first upper clamping jaw is respectively arranged on both sides of the at least one second upper clamping jaw in the direction of the longitudinal extension of the clamping beams, and wherein
the first upper clamping jaws respectively comprise a first horn at least on their first end regions facing away from the at least one second upper clamping jaw, said first horn being formed to project from the respective base body of the first upper clamping jaw in the direction of the longitudinal extension of the clamping beams.

2. The production installation according to claim 1 , wherein the first and second clamping jaw parts are respectively formed with a horn-shaped projection, and wherein a shortened outer longitudinal dimension of the second upper clamping jaw in the direction of the longitudinal extension of the clamping beams is defined by the first and second clamping jaw parts in the pull-out position.

3. The production installation according to claim 2 , wherein the shortened outer longitudinal dimension of the second upper clamping jaw in the pull-out position corresponds to a maximum length of the base body of the second upper clamping jaw.

4. The production installation according to claim 1 , wherein in the pull-out position, the first upper clamping jaws that are respectively arranged on both sides of the at least one second upper clamping jaw are respectively moved in a direction of the base body of the at least one second upper clamping jaw.

5. The production installation according to claim 1 , wherein at least individual ones of the first upper clamping jaws respectively comprise a second horn projecting from the base body in the direction of the longitudinal extension of the clamping beams on their second end regions facing the at least one second upper clamping jaw.

6. The production installation according to claim 1 , wherein the at least one second upper clamping jaw of the upper clamping jaw set is arranged on a stationary position in relation to the upper clamping beam.

7. The production installation according to claim 1 , wherein the at least one second upper clamping jaw is arranged in a central region of the upper clamping jaw set.

8. The production installation according to claim 1 , wherein a number of upper clamping jaws of the upper clamping jaw set is selected such that in the working position, a total length of the bending edge corresponds to a sum, said sum being composed of individual lengths of the first partial bending edges of the first upper clamping jaws plus a length of the second partial bending edge of the second upper clamping jaw, and the sum at a maximum corresponds to a longitudinal dimension of a clamping length to be supported on the workpiece to be manufactured.

9. The production installation according to claim 1 , wherein a number of upper clamping jaws of the upper clamping jaw set in the working position is equal to a number of upper clamping jaws of the upper clamping jaw set in the pull-out position.

10. The production installation according to claim 1 , wherein the clamping tool further comprises a lower clamping jaw set and the lower clamping jaw set comprises several first lower clamping jaws and at least one second lower clamping jaw, and wherein the at least one second lower clamping jaw respectively comprises a first and second clamping jaw part movable from the working position in the pull-out position on both sides on its first and second end sections arranged in the direction of the longitudinal extension of the clamping beams.

11. The production installation according to claim 10 , wherein at least one first lower clamping jaw is respectively arranged on both sides of the at least one second lower clamping jaw in the direction of the longitudinal extension of the clamping beams.

12. A method for adjusting a total length of a bending edge of a clamping jaw set of a clamping tool of a production installation for producing workpieces from sheet metal forming in a bending operation, wherein the method comprises the following steps:
providing a bending machine with a fixed machine frame, a lower clamping beam and with an upper clamping beam, wherein at least one of the clamping beams is adjustable relative to the machine frame in order to clampingly hold the workpiece to be manufactured,
providing a clamping tool comprising at least one lower clamping jaw and an upper clamping jaw set with comprising several first upper clamping jaws and with at least one second upper clamping jaw, wherein each of the at least one lower clamping jaw, the first upper clamping jaws, and the at least one second upper clamping jaw comprises a base body, and wherein the at least one lower clamping jaw is held on the lower clamping beam and the first upper clamping jaws and the at least one second upper clamping jaw of the upper clamping jaw set are held on the upper clamping beam, and wherein the at least one second upper clamping jaw in a direction of a longitudinal extension of the clamping beams on a first end section comprises a first clamping jaw part movable relative to its base body from a working position to a pull-out position, wherein a longitudinal dimension of the upper clamping jaw set is formed to be shorter in the pull-out position than in the working position, and
wherein a bending edge aligned in the direction of the longitudinal extension of the clamping beams is formed by the upper clamping jaw set when the upper clamping jaws are in the

Assignees

• Trumpf Maschinen Austria Gmbh & Co Kg

Inventors

• Auzinger Michael

Classifications

• B21D5/047 Primary

  Length adjustment of the clamping means · CPC title

• B21D5/04

  on brakes making use of clamping means on one side of the work · CPC title