Bending machine

Patent metadata

Field	Value
Publication number	US-2018304331-A1
Application number	US-201615769358-A
Country	US
Kind code	A1
Filing date	Oct 17, 2016
Priority date	Oct 20, 2015
Publication date	Oct 25, 2018
Grant date	—

Abstract

The invention relates to a bending press ( 3 ), in particular a press brake, comprising a machine frame ( 7 ) and pressing bars ( 13, 16 ), and tool holders ( 19, 20 ) and bending tools ( 4 ) arranged or formed on the pressing bars ( 13, 16 ) in the form of a bending punch ( 5 ) or a bending die ( 6 ), wherein a receiving portion ( 35 ) of the bending tools ( 4 ) is accommodated in a receiving groove ( 34 ) of the tool holder ( 19, 20 ). The tool holder ( 19, 20 ) and a driver device ( 41 ) assigned to the bending tool ( 4 ) are designed as a linear motor, as a result of which the bending tool ( 4 ) can be positioned in a direction ( 32 ) that is parallel to a bending edge ( 31 ).

First claim

1 : A bending press ( 3 ), in particular press brake, comprising a machine frame ( 7 ) and pressing bars ( 13 , 16 ) and tool holders ( 19 , 20 ) arranged or formed on the pressing bars ( 13 , 16 ) and bending tools ( 4 ) in the form of a bending punch ( 5 ) or a bending die ( 6 ), wherein a receiving portion ( 35 ) of the bending tools ( 4 ) is mounted in a receiving groove ( 34 ) of the tool holder ( 19 , 20 ), wherein the tool holder ( 19 , 20 ) and a driver device ( 41 ) assigned to the bending tool ( 4 ) is designed as a linear motor ( 36 ), whereby the bending tool ( 4 ) can be positioned in a direction ( 32 ) parallel to a bending edge ( 31 ).

2 : The bending press as claimed in claim 1 , wherein the tool holder ( 19 , 20 ) is designed as a long stator.

3 : The bending press as claimed in claim 1 , wherein the driver device ( 41 ) is designed as a shuttle ( 50 ), which is guided in the tool holder ( 19 , 20 ) and to which the receiving portion ( 35 ) of the bending tool ( 4 ) can be coupled.

4 : The bending press as claimed in claim 3 , wherein the shuttle ( 50 ) can be coupled by means of retractable pins ( 52 ) to the receiving portion ( 35 ) of the bending tool ( 4 ).

5 : The bending press as claimed in claim 1 , wherein the driver device ( 41 ) is designed in one piece with the receiving portion ( 35 ) of the bending tool ( 4 ).

6 : The bending press as claimed in claim 1 , wherein in the tool holder ( 19 , 20 ) a cleaning shuttle ( 53 ) is arranged which is designed for cleaning the receiving groove ( 34 ) of the tool holder ( 19 , 20 ), wherein the cleaning shuttle ( 53 ) also acts as a linear motor ( 36 ) with the tool holder ( 19 , 20 ).

7 : The bending press as claimed in claim 1 , wherein permanent magnets ( 39 ) are arranged in the driver device ( 41 ).

8 : The bending press as claimed in claim 1 , wherein in the area of the receiving groove ( 34 ) of the tool holder ( 19 , 20 ) a three-phase winding system ( 37 ) is arranged, wherein the winding system ( 37 ) is controlled by a control device ( 24 ) such that individual bending tools ( 4 ) mounted in the tool holder ( 19 , 20 ) can be displaced independently of one another.

9 : The bending press as claimed in claim 8 , wherein the winding system ( 37 ) is arranged on a groove base ( 38 ) of the receiving groove ( 34 ) and the permanent magnets ( 39 ) are arranged on one end side ( 40 ) of the receiving portion ( 35 ) of the bending tool ( 4 ).

10 : The bending press as claimed in claim 8 , wherein the winding system ( 37 ) is formed on at least one side face ( 45 ) of the receiving groove ( 34 ) and the permanent magnets ( 39 ) are arranged on at least one side face ( 46 ) of the receiving portion ( 35 ) of the bending tool ( 4 ).

11 : The bending press as claimed in claim 10 , wherein the winding system ( 37 ) is formed on both side faces ( 45 ) of the receiving groove ( 34 ) and the permanent magnets ( 39 ) are arranged on both side faces ( 46 ) of the receiving portion ( 35 ) of the bending tool ( 4 ), wherein the two winding systems ( 37 ) are arranged to be symmetrical to a central plane ( 47 ) of the tool holder ( 19 , 20 ).

12 : The bending press as claimed in claim 8 , wherein the winding system ( 37 ) extends over the whole length ( 33 ) of the tool holder ( 19 , 20 ).

13 : The bending press as claimed in claim 1 , wherein a sensor ( 49 ) is formed which is provided for detecting the position of the bending tool ( 4 ).

14 : The bending press as claimed in claim 13 , wherein the sensor ( 49 ) is arranged on the tool holder ( 19 , 20 ).

15 : The bending press as claimed in claim 7 , wherein in the bending tool ( 4 ) a clamping jaw ( 54 ) is formed which clamping jaw ( 54 ) can be released by the magnetic field of the winding system ( 37 ).

16 : The bending press as claimed in claim 1 , wherein the tool holder ( 19 , 20 ) comprises an attachment strip ( 58 ) which is arranged outside the receiving groove ( 34 ) and in which the winding system ( 37 ) is integrated.

Assignees

• Trumpf Maschinen Austria Gmbh & Co Kg

Inventors

• Cavicchia Luigi
• Tiraferri Matteo
• Tonda Roch Andrea
• Veronese Roberto
• Vidotto Giovanni
• Tomasin Fabio

Classifications

• B21D19/12

  Edge-curling · CPC title

• B21D5/0218

  Length adjustment of the punch · CPC title

• B21D5/0254 Primary

  Tool exchanging · CPC title

• B21D37/14

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

• B23Q3/155

  Arrangements for automatic insertion or removal of tools {, e.g. combined with manual handling (B23Q7/046 takes precedence)} · CPC title