EP1632298A1 - Méthode et dispositif de fabrication d'un fil levier plié - Google Patents
Méthode et dispositif de fabrication d'un fil levier plié Download PDFInfo
- Publication number
- EP1632298A1 EP1632298A1 EP05107173A EP05107173A EP1632298A1 EP 1632298 A1 EP1632298 A1 EP 1632298A1 EP 05107173 A EP05107173 A EP 05107173A EP 05107173 A EP05107173 A EP 05107173A EP 1632298 A1 EP1632298 A1 EP 1632298A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- bending
- feed
- bending operation
- lever
- 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
- 238000000034 method Methods 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000012806 monitoring device Methods 0.000 claims abstract description 14
- 238000012937 correction Methods 0.000 claims abstract description 11
- 238000005452 bending Methods 0.000 claims description 47
- 238000001514 detection method Methods 0.000 claims description 19
- 239000002828 fuel tank Substances 0.000 claims description 12
- 230000000007 visual effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000013461 design Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
Definitions
- the invention relates to a method for producing a lever wire of a provided for arrangement in a fuel tank of a motor vehicle level sensor by a wire feed to a previously entered setpoint and a subsequent bending operation of the wire by a predetermined angle. Furthermore, the invention relates to a device for producing a bent lever wire of a provided for arrangement in a fuel tank of a motor vehicle level sensor with a feed device and with a bending device.
- Level sensors for detecting a level of fuel in today's fuel tanks usually have a arranged on a support potentiometer, which detects the inclination angle of a lever wire mounted in the carrier.
- the lever wire holds at its end facing away from the carrier a float following the fuel level.
- the carrier usually has an angling as storage in the carrier and further bends, which allow unhindered pivoting of the lever wire in the most twisted fuel tanks.
- the invention is based on the problem, a method of the type mentioned in such a way that a recalibration of the lever wire is avoided. Furthermore, a device for the simplest and most accurate manufacture of the lever wire to be created.
- the first problem is inventively achieved in that immediately after the successful bending process and / or after the wire feed has taken place, a detection of the measured value and a desired / actual value comparison takes place.
- the actual value is preferably determined after each individual bending operation or even before the bending process after the wire feed and compared with the intended target value. This allows early detection of a possible deviation in the bending of the lever wire and, if necessary, corrected. As a result, the manufacture of the lever wire is particularly simple and economical. A complex recalibration can be avoided thereby.
- the detection of the measured value requires according to an advantageous development of the invention, a particularly low cost when the measured value is optically determined.
- the method according to the invention makes it possible to produce a multiply bent lever wire if, after a first bending operation has taken place, a further wire feed and a further bending operation take place.
- the measured value could, for example, be determined after each bending process at a new location on the lever wire.
- the total tolerance between the two ends of the lever wire according to another advantageous embodiment of the invention can be kept particularly low if the measured value is determined in each case at the free end of the lever wire.
- the lever wire according to another advantageous embodiment of the invention has a particularly high dimensional accuracy, if after a determination of a deviation above a predetermined tolerance in the setpoint / actual value comparison, a renewed bending process or a renewed wire feed takes place.
- This design corrects each individual bend for a detected deviation.
- individual tolerances are compensated in the bends of the lever wire, so that a tight overall tolerance of the finished bent lever wire can be maintained.
- the tolerances of the lever wire depend very much on its material properties or the temperature prevailing during bending. After changing the material or changing the temperature, at least the second lever wire can be manufactured with a particularly small number of corrections if a correction value for the bending process is determined from the desired value and the deviation determined in the desired / actual value comparison and for the bending process of the following lever wire is stored.
- the second-mentioned problem namely the provision of a device for the simplest possible manufacture of the lever wire is achieved by a monitoring device for detecting an actual value of a measuring point after a bending operation and / or after a feed and by a computing device for comparing the actual value of the measuring point with a desired value.
- each bending process can be detected in the manufacture of the lever wire and thus early adjust the bending device and / or the feed device so that the lever wire is bent as intended.
- This allows a particularly close overall tolerance of the lever wire reach after production.
- the device according to the invention therefore enables a particularly simple production of the lever wire.
- tolerances of the bends can be easily compensated if the computing device is designed to calculate a correction value for actuating the feed device and / or the bending device.
- the measuring point can be detected with particularly low constructional outlay if the monitoring device has at least one visual detection device which is longitudinally displaceable in provided spatial axes.
- the monitoring device has at least one visual detection device which is longitudinally displaceable in provided spatial axes.
- one detection device each is used on the three spatial axes.
- a single detection device in the space axes provided for detecting the measuring point can be moved.
- the inventive device designed according to another advantageous embodiment of the invention structurally particularly simple when the detection device or the detection devices is designed as a camera / are.
- FIG. 1 shows a fuel tank 1 partially filled with fuel with a flange 3 inserted in a mounting opening 2.
- a swirl pot 4 prestressed against the bottom of the fuel tank 1 is supported on the flange 3.
- the swirl pot 4 holds a level sensor 5 with a lever wire 7 carrying a float 6.
- the lever wire 7 has a bearing 8 in a carrier 9 fastened to the swirl pot 4.
- the level sensor 5 has a potentiometer 10 for detecting the deflection of the lever wire 7.
- the lever wire 7 has a plurality of bends 11.
- the lever wire 7 is advanced with the float 6 through the mounting hole 2 in the fuel tank 1.
- the bends 11 of the lever wire 7 allow the introduction of the level sensor 5 in particularly twisted fuel tank 1 and also the unimpeded movement of the float 6 over the entire height of the fuel tank. 1
- FIG. 2 schematically shows a device for producing the lever wire 7 from FIG. 1 from a wire 12 wound on a roll.
- the device has an electrical feed device 13 and an electrical bending device 14.
- the feed device 13 conveys the wire 12 into a measuring and bending space 19.
- the feed device 13 stops the wire 12 and clamps it firmly.
- the wire 12 from the bending device 14 bent.
- a measuring point 15 is defined, which is detected by a monitoring device 16.
- the monitoring device 16 has two detection devices 17 which can be displaced longitudinally in a spatial axis.
- the detection devices 17 are each designed as a camera.
- two detection devices 17 for detecting the measuring point 15 in a plane are shown in FIG.
- the feed device 13, the bending device 14 and the monitoring device 16 are connected to a computing device 18, which controls the feed device 13 and the bending device 14 as a function of input setpoint values of the measuring point 15.
- the measuring point 15 of the wire 12 can detect in a plane.
- the monitoring device 16 may include a non-illustrated, third arranged perpendicular to the plane detection device and detect the measuring point 15 in the third spatial axis.
- a monitoring device with a single, movable in the space axes provided camera can be used.
- FIG. 3 shows the device for producing the lever wire 7 after a first bending operation with one of the bends 11 to be produced and a second activation of the feed device 13 before the generation of the next bend 11 shown in FIG. 1. It can be seen here that the camera trained detection devices 17 were to follow the defined at the free end of the wire 12 measuring point 15.
- FIG. 4 shows a flow chart for the production of the lever wire 7 from FIG. 1 with the device from FIGS. 2 and 3.
- a first step S1 in FIG 2, corresponding setpoint data of the measuring point 15 defined at the free end of the wire 12 are entered as a function of the intended dimensions of the lever wire 7 to be produced.
- the computing device 18 controls the feed device 13 in a step S2, so that the clamping of the wire 12 is released, the wire 12 is moved into the measuring and bending space 19 up to the desired coordinate and then tightened.
- the detection devices 17 of the monitoring device 16 detect the actual value of the measuring point 15 defined at the free end of the wire 12 in a visual measurement S3.
- the deviation of the actual value from the desired value is detected in a further step S4 and the feed device is exceeded when an intended tolerance is exceeded 13 again controlled via a correction loop S5.
- the first bending process S6 is started. After the first bending operation S6, the actual value of the measuring point 15 at the tip of the wire 12 is again determined in a visual measurement S7 with the monitoring device 16. After a comparison S8 of the actual value with the desired value, the bending process S6 is again carried out in a correction loop S9 with a calculated correction factor in the case of a deviation outside a prescribed tolerance. However, if the actual value lies within the tolerance, it is checked in a further step S10 whether the program for producing the lever wire 7 from the wire 12 has been completely carried out. Subsequently, either another feed and bending operation of the wire 12 or the finished bent lever wire 7 is output.
- FIG. 5 shows a control loop of the method from FIG. 4 for producing the lever wire 7 from FIG. 1.
- a reference variable W (t) the intended setpoint angle or the intended nominal length of the wire 12 during the feed or bending process S6 and with a controlled variable x (t) of the actual angle or the actual length of the advanced or bent wire 12.
- the monitoring device 16 detects the actual angle or the actual wire length from the controlled variable and supplies this measured value to the computing device 18, in which a control difference E (t) is determined. From this control difference, a manipulated variable Y (t) for the bending process S6 or the feed is determined.
- the manipulated variable Y (t) is thus a correction factor with which a faulty bent wire 12 can be bent.
- the parameters with which the bending device 14 and the feed device 13 are actuated for the production of a following lever wire 7 can be corrected with the correction factor.
- disturbances Z (t) act on the wire 12 during the bending operation S6, such as the internal stress of the material or the temperature, which influence the actual length produced or the actual angle of the finished bent wire 7.
- the influence of these disturbances Z (t) on the bend 11 of the wire 12 are detected by means of the monitoring device 16.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Length Measuring Devices By Optical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410043174 DE102004043174A1 (de) | 2004-09-03 | 2004-09-03 | Verfahren und Vorrichtung zur Herstellung eines gebogenen Hebeldrahtes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1632298A1 true EP1632298A1 (fr) | 2006-03-08 |
| EP1632298B1 EP1632298B1 (fr) | 2008-10-29 |
Family
ID=35276153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20050107173 Expired - Lifetime EP1632298B1 (fr) | 2004-09-03 | 2005-08-04 | Méthode et dispositif de fabrication d'un fil levier plié |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1632298B1 (fr) |
| DE (2) | DE102004043174A1 (fr) |
| ES (1) | ES2317150T3 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008142252A3 (fr) * | 2007-04-02 | 2009-01-29 | Jaubjaub Consulting | Unite de cintrage d'un tub |
| DE102010014384A1 (de) * | 2010-04-06 | 2011-10-06 | Wafios Ag | Richt- und Abschneidemaschine |
| EP3254782A1 (fr) * | 2016-06-10 | 2017-12-13 | Automated Industrial Machinery, Inc. | Procédé et appareil d'étalonnage automatique d'une machine de pliage de fil |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028834A1 (de) * | 1980-07-30 | 1982-02-25 | Adolf 8962 Pfronten Wünsch | Verfahren und maschine zum automatischen stanzen und biegen von werkstuecken |
| DE4109795A1 (de) * | 1991-03-26 | 1992-10-01 | Georg Burger | Verfahren und einrichtung zum stanzen, biegen und/oder pressen |
| DE4228566A1 (de) * | 1991-08-30 | 1993-03-04 | Brasil Compressores Sa | Verfahren zum biegeumformen verformbarer koerper |
| EP0642854A1 (fr) * | 1993-09-10 | 1995-03-15 | Otto Bihler | Machine outil comportant un dispositif de réglage pour un élément fonctionnel |
| WO1996021529A1 (fr) * | 1995-01-11 | 1996-07-18 | British United Shoe Machinery Ltd. | Systeme de definition de profil |
| DE19835521C1 (de) * | 1998-08-06 | 2000-02-17 | Schuessler Technik Bernd Schue | Verfahren zum Biegen von Draht |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3322777A1 (de) * | 1983-06-24 | 1985-01-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München | Verfahren zum richtenden umformen, insbesondere biegerichten und/oder torsionsrichten, von werkstuecken |
| DE4137752A1 (de) * | 1991-11-16 | 1993-05-19 | Braun Federdraht Vertriebs Gmb | Verfahren und vorrichtung zum beruehrungslosen messen von objekten |
| US5477715A (en) * | 1992-04-08 | 1995-12-26 | Reell Precision Manufacturing Corporation | Adaptive spring winding device and method |
| DE19754521C2 (de) * | 1997-12-09 | 2000-03-30 | Mannesmann Vdo Ag | Füllstandssensor |
| DE10304327A1 (de) * | 2003-02-04 | 2004-08-19 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zum Biegen schlanker Werkstücke |
-
2004
- 2004-09-03 DE DE200410043174 patent/DE102004043174A1/de not_active Withdrawn
-
2005
- 2005-08-04 DE DE200550005788 patent/DE502005005788D1/de not_active Expired - Lifetime
- 2005-08-04 EP EP20050107173 patent/EP1632298B1/fr not_active Expired - Lifetime
- 2005-08-04 ES ES05107173T patent/ES2317150T3/es not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028834A1 (de) * | 1980-07-30 | 1982-02-25 | Adolf 8962 Pfronten Wünsch | Verfahren und maschine zum automatischen stanzen und biegen von werkstuecken |
| DE4109795A1 (de) * | 1991-03-26 | 1992-10-01 | Georg Burger | Verfahren und einrichtung zum stanzen, biegen und/oder pressen |
| DE4228566A1 (de) * | 1991-08-30 | 1993-03-04 | Brasil Compressores Sa | Verfahren zum biegeumformen verformbarer koerper |
| EP0642854A1 (fr) * | 1993-09-10 | 1995-03-15 | Otto Bihler | Machine outil comportant un dispositif de réglage pour un élément fonctionnel |
| WO1996021529A1 (fr) * | 1995-01-11 | 1996-07-18 | British United Shoe Machinery Ltd. | Systeme de definition de profil |
| DE19835521C1 (de) * | 1998-08-06 | 2000-02-17 | Schuessler Technik Bernd Schue | Verfahren zum Biegen von Draht |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008142252A3 (fr) * | 2007-04-02 | 2009-01-29 | Jaubjaub Consulting | Unite de cintrage d'un tub |
| DE102010014384A1 (de) * | 2010-04-06 | 2011-10-06 | Wafios Ag | Richt- und Abschneidemaschine |
| EP3254782A1 (fr) * | 2016-06-10 | 2017-12-13 | Automated Industrial Machinery, Inc. | Procédé et appareil d'étalonnage automatique d'une machine de pliage de fil |
| US20170355005A1 (en) * | 2016-06-10 | 2017-12-14 | Automated Industrial Machinery, Inc. | Method and apparatus for auto-calibration of a wire bending machine |
| US11027323B2 (en) | 2016-06-10 | 2021-06-08 | Advanced Orthodontic Solutions | Method and apparatus for auto-calibration of a wire bending machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2317150T3 (es) | 2009-04-16 |
| DE502005005788D1 (de) | 2008-12-11 |
| DE102004043174A1 (de) | 2006-03-09 |
| EP1632298B1 (fr) | 2008-10-29 |
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