Bending machine comprising a work area image detecting device and method for representing a work area

Patent metadata

Field	Value
Publication number	US-11159730-B2
Application number	US-201716327485-A
Country	US
Kind code	B2
Filing date	Aug 30, 2017
Priority date	Sep 2, 2016
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

A bending machine has a work area image capture apparatus. A longitudinal expanse and the movement direction of the press beam define a working plane, which establishes a front working and manipulation space and a rear machine space, which is distinguished from the former and, in particular, closed off. An image capture apparatus is disposed in the working and manipulation space above the machine table, in a center section of the longitudinal expanse of the press beam, which apparatus is connected with a display, which is configured for representation of the captured image of the capture region. The image capture apparatus is disposed in a press beam casing, and has two image capture devices, wherein each image capture device captures a partial section in the direction of the machine table.

First claim

The invention claimed is:

1. A bending machine ( 1 ) with a work area image capture apparatus ( 2 ), wherein the bending machine ( 1 ) has a machine frame,
a longitudinally extended machine table ( 4 ), fixed in place, and a longitudinally extended press beam ( 6 ), which press beam ( 6 ) is guided in the machine frame and held by a drive means ( 7 ), so as to be movable relative to the latter,
and wherein the machine frame furthermore has two side parts ( 3 ), which are spaced apart from one another by a machine width in the direction of the longitudinal expanse ( 5 ) of the machine table ( 4 ),
and wherein the longitudinal expanse ( 5 ) and the movement direction ( 8 ) of the press beam ( 6 ) define a working plane ( 32 ), and the working plane ( 32 ) establishes a front working and manipulation space ( 33 ) and a rear machine space ( 34 ), which is distinguished from the former and, in particular, closed off, and wherein an image capture apparatus ( 2 ) is disposed in the working and manipulation space ( 33 ) above the machine table ( 4 ), in a center section of the longitudinal expanse ( 9 ) of the press beam, in a press beam casing ( 12 ), and wherein the image capture apparatus ( 2 ) has two image capture means ( 16 ), wherein a capture region ( 10 ) of the image capture apparatus ( 2 ) is oriented in the direction of the machine table ( 4 ),
and wherein each image capture means ( 16 ) captures a partial section ( 19 ) in the direction of the machine table ( 4 ),
and wherein the image capture apparatus is connected with a display means ( 11 ), and
wherein the display means ( 11 ) is configured for representation of the captured image of the capture region ( 10 ), and
the optical centers of the two image capture means ( 16 ) coincide in comparison with the longitudinal expanse ( 5 ) of the machine table ( 4 ), in particular are disposed at a distance ( 18 ) from one another of less than 10 cm.

2. The bending machine according to claim 1 , wherein the image capture apparatus ( 16 ) is formed by a 2D camera.

3. The bending machine according to claim 1 , wherein the image capture apparatus ( 16 ) is formed by a laser scanner.

4. The bending machine according to claim 1 , wherein the two partial regions ( 19 ) form a first overlap region ( 20 ), which covers a common section of the capture region ( 10 ).

5. The bending machine according to claim 1 , wherein the ratio of the normal line distance ( 31 ) between the image capture apparatus and the longitudinal expanse ( 5 ) of the machine table ( 4 ) amounts to less than 1, in particular in the range from 1 to 0.25.

6. The bending machine according to claim 1 , wherein the normal line distance ( 31 ) between the image capture apparatus and the machine table ( 4 ) amounts to 60 cm to 150 cm.

7. The bending machine according to claim 1 , wherein the opening angle ( 28 ) of an image capture means ( 16 ), parallel to the working plane ( 32 ), amounts to at least 60°, in particular 66°.

8. The bending machine according to claim 7 , wherein the pivot angle ( 30 ) of the two image capture means ( 16 ) is the same, and amounts to 20° to 30°, in particular 25°.

9. The bending machine according to claim 7 , wherein the pivot angle ( 30 ) of the two image capture means ( 16 ) is not the same, and amounts to 20° to 30° and 40° to 30°, in particular 25° and 35°.

10. A bending machine according to claim 1 , wherein an optical axis ( 29 ) of the image capture means ( 16 ) is pivoted in the direction parallel to the working plane ( 32 ), about a pivot angle ( 30 ) relative to the normal line distance of the image capture means ( 16 ) relative to the machine table ( 4 ).

11. The bending machine according to claim 1 , wherein an image synthesis module ( 21 ) is present, with which the cameras of the front image capture apparatus are connected, and which image synthesis module ( 21 ) is configured for generation of a front overall image of the front working and manipulation space ( 33 ).

12. The bending machine according to claim 11 , wherein the image synthesis module ( 21 ) is configured for generation of an overall image of the front working and manipulation space ( 33 ) and of the rear machine space ( 34 ).

13. The bending machine according to claim 11 , wherein an image analysis module ( 23 ) is present, which is connected with the image synthesis module ( 21 ), and which image analysis module ( 23 ) is configured for recognition of a structure of a metal sheet to be processed.

14. The bending machine according to claim 1 , wherein a further image capture apparatus ( 35 ) is disposed in the machine space ( 34 ) above the machine table ( 4 ), in a center section of the longitudinal expanse ( 9 ) of the press beam ( 6 ), which apparatus has at least two further image capture means ( 16 ), which are preferably configured as cameras, and wherein the cameras are oriented in the direction of a rear stop ( 36 ) present in the machine space ( 34 ).

15. The bending machine according to claim 14 , wherein an image synthesis module ( 21 ) is present, with which the cameras of the rear further image capture apparatus ( 35 ) are connected, and which image synthesis module ( 21 ) is configured for generation of a rear overall image of the rear machine space ( 34 ).

16. A method for representation of an overall image of a longitudinally extended work area of a bending machine ( 1 ), carried out on the bending machine ( 1 ) according to claim 1 ,
wherein a region along the machine table ( 4 ) is captured as a front picture-taking region ( 40 ) by the image capture apparatus, which is disposed in the working and manipulation space ( 33 ), and shown on a display means ( 11 ) as a live image,
wherein
a first section ( 25 ) is captured by a first camera ( 24 ) of the image capture apparatus, as a first partial image ( 38 ), and a second section ( 27 ) is captured by the second camera ( 26 ) of the image capture apparatus, as a second partial image ( 39 ) along the front picture-taking region ( 40 ), wherein the first and second section of the front picture-taking region ( 40 ) are captured to overlap in a partial section ( 19 ), and forms a first overlap region ( 20 ),
and image orientation and image scaling of the first ( 38 ) and second ( 39 ) partial image are carried out by the image synthesis module ( 21 ),
and an image synthesis of the first ( 38 ) and second ( 39 ) partial image is carried out in the first overlap region ( 20 ), and the live image is formed.

17. The method according to claim 16 , wherein
a region along the machine table ( 4 ) is captured as a rear picture-taking region ( 41 ) by the further image capture apparatus disposed in the machine space ( 34 ), and displayed on a display means ( 11 ) as a live image,
wherein a first section ( 25 ) is captured by the first camera ( 24 ) of the further image capture apparatus ( 35 ) as a third partial image ( 42 ), and a second section ( 27 ) along the rear picture-taking region ( 41 ) is captured by the second camera ( 26 ) of the further image capture apparatus ( 35 ) as a fourth partial image ( 43 ), wherein the first ( 25 ) section and the second ( 27 ) section of the rear picture-taking region ( 41 ) are captured to overlap in a partial section ( 19 ), and form a second overlap region ( 44 ),
and image orientation and image scaling of the third ( 42 ) and fourth ( 43 ) partial image are carried out by the image synthesis module ( 21 ),
and in the second overlap region ( 44 ), image synthesis of the third ( 42 ) and fourth ( 43 ) partial image is carried out, and the live image is formed.

Assignees

• Trumpf Maschinen Austria Gmbh & Co Kg

Inventors

• Angerer Gerhard
• Freudenthaler Klemens
• Hausmann Florian
• Hoerl Matthias
• Kovjenic Nenad
• Maier Florian
• Steininger Verena
• Theis Helmut
• Waldherr Manfred

Classifications

• H04N23/63 Primary

  by using electronic viewfinders · CPC title

• H04N23/90

  Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums · CPC title

• B21D5/02 Primary

  on press brakes without making use of clamping means · CPC title

• B23Q17/24

  using optics {or electromagnetic waves} · CPC title

• G06T5/50

  using two or more images, e.g. averaging or subtraction · CPC title