EP2771135A2 - Vorrichtung zum biegen von blechen - Google Patents
Vorrichtung zum biegen von blechenInfo
- Publication number
- EP2771135A2 EP2771135A2 EP12805557.1A EP12805557A EP2771135A2 EP 2771135 A2 EP2771135 A2 EP 2771135A2 EP 12805557 A EP12805557 A EP 12805557A EP 2771135 A2 EP2771135 A2 EP 2771135A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- die
- bending
- measuring
- punch
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005452 bending Methods 0.000 title claims abstract description 63
- 239000002184 metal Substances 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007723 die pressing method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/006—Bending sheet metal along straight lines, e.g. to form simple curves combined with measuring of bends
Definitions
- the invention relates to a device for bending metal sheets with a die, with a stamping a sheet under a bending operation in the die punch and with an optical measuring device for detecting the respective bending angle of the sheet by triangulation.
- a straight line of light is projected onto the outer side of the sheet to be bent with respect to the bending angle by means of a laser beam, and this light section is continuously measured by triangulation with the aid of a line camera, so that the respective distance of the light section from a given reference straight line Bending angle of the bent sheet metal leg can be determined.
- the measuring device for the bending angle can be aligned with respect to the measured in the direction of the bending line length of the sheet to be bent, the measuring device is housed on a carriage movable along the die.
- the disadvantage of this known measuring device is, above all, that the bending angle can only be measured at the sheet metal nose projecting above the die, which, in particular in the case of multiple bends, can lead to shading of the sheet metal leg to be measured by sheet metal sections already bent.
- the invention is therefore based on the object, a device of the type described for bending of sheets in such a way that advantageous conditions for accurate and simple detection of the respective bending angle of a sheet metal workpiece can be guaranteed.
- the invention achieves the stated object by the fact that the die and / or the punch have at least one measuring slit perpendicular to the bending line and open towards the metal sheet with a receptacle for the measuring device which has a row of slits extending at least over the region of the measuring slit aligned transmitters for beam direction parallel laser beams and at least one line scan camera for Triangulationser charged the laser beam reflected on the sheet comprises.
- the bending angles can also be detected in the region of the die and / or the punch, because parallel laser beams extending in the bending direction through these measuring slits can be directed onto the sheet to be bent in order to be able to detect the respective bending angle of the sheet-metal limb marked in this way on the basis of the light points of the laser beams reflected on the sheet surface in a section line of the sheet metal surface with a measuring plane perpendicular to the bending line.
- the bending angle of small sheet leg sections within the die can be determined continuously, not only from the side of the die, but also from the stamp side, which allows a largely independent, non-contact bending angle detection of already made bends. So that an adaptation of the measuring position to the position of the workpieces and their size in a comparatively simple manner is possible, without having to do without a good measurement accuracy, the die and / or the stamp on their extending in the direction of the bending line length measuring slots with recordings for selectively inserting the summarized in a housing measuring device.
- the measuring slots prepared in the die or in .Stempel can thus be selected if necessary for the use of a measuring device of the kind described, with only the housing of the measuring device, the hertees complete record all the essential components, including the power supply from the evaluation units and the data transfer can, in which the respective, the individual measuring slots associated recording needs to be used to be able to make measurements of the bending angle can.
- the detection of the points of light of the reflected laser beams for triangulation may advantageously be arranged by two on both sides of the row of transmitters for the laser beams Line scan cameras are performed, which brings good detection conditions for the light points in particular in the area of the die. But it is also possible that the measuring device has only one line camera in the middle of the row of transmitters for the laser beams. Such a camera arrangement is particularly advantageous for detecting the bending angle on the inside of the bend from the stamp.
- the measuring slots in the punch between the die can not leave behind corresponding marks in the workpieces to be formed
- the measuring slots in the punch and in the die can be closed in the contact area of the sheet on the punch or on the die, so that in these areas Over the die or punch length continuous contact surface for the sheets thus results in the risk that the edges of the measuring slots in the workpiece during the bending process, is avoided.
- FIG. 1 shows a device according to the invention for bending sheets in a cross-section perpendicular to the bending line in the region of a measuring slot of the die and the punch,
- Fig. 2 is a section along the line II-II of Fig. 1 and
- Fig. 3 is a Au s enclosures variant of a measuring device in one of FIG. 1 corresponding, only related to the stamp representation.
- the schematically indicated device for bending sheets has, according to FIGS. 1 and 2, a stationary die 1 and a punch 2, which is arranged above the die 1 and can be acted upon by a pressure force, around a metal sheet 3 inserted between die 1 and punch 2 with the aid of the punch 2 to press under a corresponding bending operation in the die 1.
- the die 1 facing the longitudinal edge of the punch 2 forms the bending line for the sheet 3, the respective bending angle to be detected. This bending angle results between the sheet metal legs 4 on both sides of the bending line.
- At least one measuring device 5 is provided, which is equipped with transmitters 6 for laser strokes 7 indicated by dashed lines, which extend in the bending direction parallel to each other and lie in a plane perpendicular to the bending line and on the
- the measuring device 5 facing surface of the sheet metal leg 4 depict light points that are detected by means of line scan cameras 8, in particular on CCD basis for triangulation.
- a straight line perpendicular to the bending line can be determined on the sheet metal legs 4, which represents an angle leg of the bending angle to be measured, so that the inclination of this straight line relative to a reference line given by the measuring device 5 the respective bending angle between the two metal legs 4 can be calculated.
- the light points required for detecting the bending angle can also be projected onto the sheet metal surface in the area of the die 1 and the punch 2, the die 1 and the punch 2 are provided with measuring slots 9 distributed over their length extending in the direction of the bending line which are perpendicular to the bending line and open against the sheet metal legs 4 with the exception of a narrow edge portion 10.
- the measuring devices 5 are housed in a substantially closed housing 11, so that the measuring device 5 can be used as a unit either in a provided in the die 1 and the stamp 2 shots 12, the associated with each measuring slot 9.
- the measuring position of the measuring device 5 can be adapted to the respective requirements in a simple manner, depending on the case of need the bending angle on the inside and or outside
- the arrangement of the line scan cameras 8 on both sides of the row of transmitters 6 for the laser beams 7 in most cases an advantageous detection of the curved sheet 3 can be determined, even within the die 1 or in the immediate connection area allows the respective bending angle, such a camera arrangement is not mandatory.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT15752011A AT511358B1 (de) | 2011-10-27 | 2011-10-27 | Vorrichtung zum biegen von blechen |
| PCT/AT2012/050169 WO2013059851A2 (de) | 2011-10-27 | 2012-10-25 | Vorrichtung zum biegen von blechen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2771135A2 true EP2771135A2 (de) | 2014-09-03 |
| EP2771135B1 EP2771135B1 (de) | 2015-08-05 |
Family
ID=47221792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12805557.1A Not-in-force EP2771135B1 (de) | 2011-10-27 | 2012-10-25 | Vorrichtung zum biegen von blechen |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2771135B1 (de) |
| AT (1) | AT511358B1 (de) |
| WO (1) | WO2013059851A2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112458A (zh) * | 2019-12-31 | 2020-05-08 | 东莞盛翔精密金属有限公司 | 模具调节系统以及模具调节方法 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT515521B1 (de) * | 2014-07-23 | 2015-10-15 | Trumpf Maschinen Austria Gmbh | Biegewinkelmessvorrichtung und Verfahren zum Messen eines Biegewinkels mittels der Biegewinkelmessvorrichtung |
| AT516465B1 (de) * | 2014-11-04 | 2016-08-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Biegewerkzeug mit Biegegeometrie-Messvorrichtung |
| CN105057409A (zh) * | 2015-08-03 | 2015-11-18 | 湖北鸿路钢结构有限公司 | 一种能消除钛合金板料在激光成形中的边缘效应和氧化的方法 |
| AT518560B1 (de) * | 2016-04-18 | 2018-01-15 | Trumpf Maschinen Austria Gmbh & Co Kg | Biegebalken für eine Schwenkbiegemaschine |
| CN113426918B (zh) * | 2021-06-29 | 2023-08-01 | 繁昌县华特机械制造有限公司 | 一种排气管不锈钢压花板封口环压边装置 |
| CN115365333B (zh) * | 2022-08-23 | 2025-06-10 | 安徽远方机床制造有限公司 | 一种带有激光保护机构的数控折弯机及其方法 |
| CN117181870B (zh) * | 2023-11-07 | 2024-01-23 | 广东金来电气有限公司 | 一种光伏支架弯折加工装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2624557B2 (ja) * | 1990-03-15 | 1997-06-25 | 株式会社アマダ | 折曲機の角度計測装置 |
| JP2680460B2 (ja) * | 1990-03-09 | 1997-11-19 | 株式会社アマダ | 折曲機の角度計測装置 |
| JP2001018011A (ja) * | 1999-07-06 | 2001-01-23 | Amada Eng Center Co Ltd | プレスブレーキにおけるワーク折曲げ角度検出方法及び装置並びにダイ |
| DE19939837A1 (de) * | 1999-08-21 | 2001-03-29 | Eht Werkzeugmaschinen Gmbh | Verfahren und Vorrichtung zum Erfassen eines Biegewinkels an einem Werkstück |
| NL1013378C2 (nl) * | 1999-10-22 | 2001-04-24 | Best Quality B V | Inrichting en werkwijze voor het bepalen van een zethoek van een plaat en het gebruik daarvan voor het zetten van platen. |
| ES2251150T3 (es) * | 1999-11-19 | 2006-04-16 | Lvd Company Nv | Metodo y dispositivo para medir un angulo de plegado de una chapa en una maquina plegadora. |
-
2011
- 2011-10-27 AT AT15752011A patent/AT511358B1/de not_active IP Right Cessation
-
2012
- 2012-10-25 WO PCT/AT2012/050169 patent/WO2013059851A2/de not_active Ceased
- 2012-10-25 EP EP12805557.1A patent/EP2771135B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013059851A2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112458A (zh) * | 2019-12-31 | 2020-05-08 | 东莞盛翔精密金属有限公司 | 模具调节系统以及模具调节方法 |
| CN111112458B (zh) * | 2019-12-31 | 2021-08-27 | 东莞盛翔精密金属有限公司 | 模具调节系统以及模具调节方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2771135B1 (de) | 2015-08-05 |
| WO2013059851A2 (de) | 2013-05-02 |
| AT511358A4 (de) | 2012-11-15 |
| WO2013059851A3 (de) | 2013-07-25 |
| AT511358B1 (de) | 2012-11-15 |
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