CN103575238A - Angle detection device used for bending machine - Google Patents
Angle detection device used for bending machine Download PDFInfo
- Publication number
- CN103575238A CN103575238A CN201310471260.2A CN201310471260A CN103575238A CN 103575238 A CN103575238 A CN 103575238A CN 201310471260 A CN201310471260 A CN 201310471260A CN 103575238 A CN103575238 A CN 103575238A
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- China
- Prior art keywords
- striation
- measuring head
- synchronous
- detection device
- slide block
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
-
- 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
-
- 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
Abstract
An angle detection device used for a bending machine comprises four synchronous pulley fixing bases which are fixed to the two ends of a machine body, and connecting shafts penetrate through inner holes of synchronous pulleys, on the different sides, of the two ends of the machine body and then are inserted into rolling bearings. A servo motor is connected with one synchronous pulley, and one synchronous belt is installed on the two synchronous pulleys on the same side. Guide rails are fixedly connected to the machine body through bolts. Sliding blocks are installed on the guide rails and meshed with the synchronous belts. Measuring head supports are connected to the sliding blocks, each measuring head is formed by a left camera, a right camera and a light bar projector and fixed to one of the measuring head supports, and the left camera, the right camera, the light bar projector, the measuring head support, the sliding block, the guide rail, the synchronous belt and the two synchronous pulleys on each side of the machine body form a measuring device. The measuring devices on the two sides of the machine body are symmetrically arranged relative to a bent part. According to a detection method, light bar three-dimensional information is reconstructed to calculate the bending angle, and a non-contact mode is adopted for measuring so that the angle can be rapidly and accurately detected in real time in the bending process of the bending machine.
Description
Technical field
The angle detection technique field that the present invention relates to sheet material bending part, relates in particular to a kind of bender angle detection device.
Background technology
Bender is former important in plate plastic processing, has complicated resilience problem during due to sheet material bending, is the important indicator of weighing bender performance to the accurate control of sheet material bending angle always.Semiclosed loop mode is mainly taked in the control of bender bending angle, adjust the amount of being pressed into of patrix and control bending angle, and the angle of sheet material forming and mould openings, sheet metal thickness, material resilience, patrix drafts are relevant, digital control system can only be controlled patrix drafts, and the error that the factor outside ring is caused is helpless.
For above problem, existing multiple bender angle measurement method, can be divided into two kinds of contact and non-contact measurements substantially at present, contact type measurement adopts mechanical hook-up, use single-point type measuring method, structure is comparatively complicated, and measuring accuracy depends on the precision of physical construction; Non-cpntact measurement is generally used laser range finder, detects measuring head and surface of the work distance, according to related algorithm, calculates bending angle.These methods are all that single-point type is measured, and measuring accuracy depends on measurement point workpiece surface quality, easily produces error, for workpiece a certain cross section measurement of angle, generally need to measure the value of the averaging estimation of a plurality of positions, testing process inefficiency.In addition these methods are all based on upper and lower punch die, to be the hypothesis of Accurate align, adopt the twice of one-sided detection angles approximate as bending angle.And in actual production, upper and lower punch die is to be difficult to Accurate align, this has just brought measuring error.
Therefore developing a kind of quick, accurate, contactless measurement mechanism is of great practical significance.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of bender angle detection device, adopt non-cpntact measurement, in order to realize the real-time detection of bender Forging Process angle.
For achieving the above object, the present invention is by the following technical solutions:
A kind of bender angle detection device, comprise four synchronous pulley holders 2, four synchronous pulley holders 2 are fixed on fuselage 1 two ends, and front and back are symmetrical, each synchronous pulley holder 2 is provided with dead eye, be used for installing rolling bearing 17, coupling shaft 3 through fuselage 1 two ends not synchronous pulley 5 endoporus of homonymy insert in rolling bearings 17, by the shaft shoulder and synchronous pulley 5 axial freedoms, fix, between coupling shaft 3 and synchronous pulley 5, by key, be connected, servomotor 4 is connected by key with in four synchronous pulleys 5 one, on two synchronous pulleys 5 of homonymy, a Timing Belt 15 is installed, and tighten, guide rail 14 is bolted and is fixed on fuselage 1, and guarantee that guide rail 14 is in Timing Belt 15 inside, slide block 13 is installed on guide rail 14, slide block 13 tops are processed with bar generating gear and are meshed with Timing Belt 15, on slide block 13, be connected by screw measuring head support 12, left camera 9, right camera 10 and the striation projector 11 form measuring head, measuring head is all connected by screw and is fixed on measuring head support 12, left camera 9, right camera 10 is with respect to the striation projector 11 symmetrical placement, the left camera 9 of fuselage 1 each side, right camera 10, the striation projector 11, measuring head support 12, slide block 13, guide rail 14, Timing Belt 15, 2 synchronous pulleys 5, form one group of measurement mechanism, the measurement mechanism of fuselage 1 both sides is arranged symmetrically with respect to bending part 7, each group measurement mechanism detects the angle of bending part 7 outside surfaces and counterdie 6 outside surfaces.
On described slide block 13, displacement transducer is installed, detects in real time the positional information of slide block 13 on guide rail 14.
The striation 16 of projection on the same group that the described striation projector 11 guarantees bending part 7 both sides while installing is in same plane.
The afterbody of described servomotor 4 is towards fuselage 1 inner side.
Described left camera 9 and right camera 10 both optical axis included angles change between 0-90 °.
The striation width that the described striation projector 11 projects is less than 1mm.
Advantage of the present invention: the present invention adopts non-cpntact measurement, in order to realize the real-time detection of bender Forging Process angle, fast, accurately.
Accompanying drawing explanation
Fig. 1 is bender angle detection device oblique view.
Fig. 2 is striation projection figure.
Fig. 3 is bender angle detection device vertical view.
Fig. 4 is bender angle detection device right view.
Fig. 5 is synchronous pulley holder detail view.
Fig. 6 is bender folding angle measurement method schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of bender angle detection device, comprise four synchronous pulley holders 2, four synchronous pulley holders 2 are fixed on fuselage 1 two ends, and front and back are symmetrical, each synchronous pulley holder 2 is provided with dead eye, be used for installing rolling bearing 17, coupling shaft 3 through fuselage 1 two ends not synchronous pulley 5 endoporus of homonymy insert in rolling bearings 17, by the shaft shoulder and synchronous pulley 5 axial freedoms, fix, between coupling shaft 3 and synchronous pulley 5, by key, be connected, servomotor 4 is connected by key with in four synchronous pulleys 5 one, on two synchronous pulleys 5 of homonymy, a Timing Belt 15 is installed, and tighten, guide rail 14 is bolted and is fixed on fuselage 1, and guarantee that guide rail 14 is in Timing Belt 15 inside, slide block 13 is installed on guide rail 14, slide block 13 tops are processed with bar generating gear and are meshed with Timing Belt 15, on slide block 13, be connected by screw measuring head support 12, left camera 9, right camera 10 and the striation projector 11 form measuring head, measuring head is all connected by screw and is fixed on measuring head support 12, left camera 9, right camera 10 is with respect to the striation projector 11 symmetrical placement, the left camera 9 of fuselage 1 each side, right camera 10, the striation projector 11, measuring head support 12, slide block 13, guide rail 14, Timing Belt 15, 2 synchronous pulleys 5, form one group of measurement mechanism, the measurement mechanism of fuselage 1 both sides is arranged symmetrically with respect to bending part 7, each group measurement mechanism detects the angle of bending part 7 outside surfaces and counterdie 6 outside surfaces.
On described slide block 13, displacement transducer is installed, detects in real time the positional information of slide block 13 on guide rail 14.
The striation 16 of projection on the same group that the described striation projector 11 guarantees bending part 7 both sides while installing is in same plane.
The afterbody of described servomotor 4 is towards fuselage 1 inner side.
Described left camera 9 and right camera 10 both optical axis included angles change between 0-90 °.
The striation width that the described striation projector 11 projects is less than 1mm.
The principle of work of pick-up unit of the present invention is:
Under the acting force of Timing Belt 15, slide block 13 can be done rectilinear motion along guide rail 14, displacement transducer is installed on slide block 13 and detects in real time slide block 13 positions, and two groups of measurement mechanisms share a servomotor 4, guarantee slide block 13 synchronized movement.While carrying out measurement of angle, one group of lines of the striation projector 11 projections, as shown in Figure 2, the measuring head that is distributed in bending part 7 both sides is worked simultaneously, be 11 open and close simultaneously of the striation projector, left and right camera 9,10 synchronous acquisition images, the striation that projects 16 can be according to measure to require adjusting striation quantity and spacing, but must guarantee that both sides projection striation 16 is all in same cross section, position of the every movement of measuring head, detect one group of angle value, and according to the positional information of slide block 13 top offset sensor record, detection angles is positioned.
Angle testing process is as follows:
Single cross section angle detects: servomotor 4 drives synchronous pulley 5 to rotate by coupling shaft 3, synchronous pulley 5 slides on guide rail 14 by Timing Belt 15 band movable sliders 13, servomotor 4 is accurately controlled slide block shift position, make it rest in the position that needs angle to detect, a striation of the striation projector 11 synchronous projections of bender both sides is on bending part 7 and counterdie 6 outside surfaces, bender both sides camera 9,10, gathers bending part 7 and counterdie 6 outside surface striation information, carries out angle detection.
A plurality of cross sections angle detects: servomotor 4 drives synchronous pulley 5 to rotate by coupling shaft 3, synchronous pulley 5 slides on guide rail 14 by Timing Belt 15 band movable sliders 13, servomotor 4 is accurately controlled slide block shift position, make it rest in the position that needs angle to detect, the many groups of the striation projector 11 projection striation of bender both sides, camera 9,10 gathers striation, detects striation place angle, realizes a plurality of cross sections angle and detects.
Total length angle detects: servomotor 4 drives synchronous pulley 5 to rotate by coupling shaft 3, synchronous pulley 5 slides on guide rail 14 by Timing Belt 15 band movable sliders 13, servomotor 4 is accurately controlled slide block shift position, make it rest in the position that needs angle to detect, the many groups of the striation projector 11 projection striation of bender both sides, camera 9,10 gathers striation, detects striation place angle, realizes a plurality of cross sections angle and detects.Servomotor 4 drives measuring head to move to next position, and angle detection is carried out in a plurality of cross sections in camera vision area, according to the positional information of slide block 13 records, each position angle is carried out to total length splicing, realizes total length and detects.
With reference to Fig. 6, the detection method of described pick-up unit, identical two measuring head A1, A2 are arranged on bending part both sides, and can be along bending part length direction synchronizing moving, measuring head A1, A2 project two narrow striations to bending part and counterdie, and two narrow striations are in same plane, and measuring head A1, A2 gather bending part and counterdie outside surface striation information simultaneously, according to binocular imaging principle, rebuild striation three-dimensional information, utilize space line angle relation to calculate respectively bending part and counterdie angle α
1, α
2, bending part angle is by formula α=360 °-α
1-α
2try to achieve, α is the bending angle of bending part.
The foregoing is only one embodiment of the present invention, it not whole or unique embodiment, the conversion of any equivalence that those of ordinary skills take technical solution of the present invention by reading instructions of the present invention, is claim of the present invention and contains.
Claims (6)
1. a bender angle detection device, comprise four synchronous pulley holders (2), it is characterized in that: four synchronous pulley holders (2) are fixed on fuselage (1) two ends, and front and back are symmetrical, each synchronous pulley holder (2) is provided with dead eye, be used for installing rolling bearing (17), coupling shaft (3) through fuselage (1) two ends not the synchronous pulley of homonymy (5) endoporus insert in rolling bearing (17), by the shaft shoulder and synchronous pulley (5) axial freedom, fix, between coupling shaft (3) and synchronous pulley (5), by key, be connected, servomotor (4) is connected by key with in four synchronous pulleys (5) one, the upper Timing Belt (15) of installing of two synchronous pulleys of homonymy (5), and tighten, guide rail (14) is bolted and is fixed on fuselage (1), and guarantee that guide rail (14) is in Timing Belt (15) inside, slide block (13) is installed on guide rail (14), slide block (13) top is processed with bar generating gear and is meshed with Timing Belt (15), on slide block (13), be connected by screw measuring head support (12), left camera (9), right camera (10) and the striation projector (11) form measuring head, measuring head is all connected by screw and is fixed on measuring head support (12), left camera (9), right camera (10) is with respect to the striation projector (11) symmetrical placement, the left camera (9) of each side of fuselage (1), right camera (10), the striation projector (11), measuring head support (12), slide block (13), guide rail (14), Timing Belt (15), 2 synchronous pulleys (5), form one group of measurement mechanism, the measurement mechanism of fuselage (1) both sides is arranged symmetrically with respect to bending part (7), each group measurement mechanism detects the angle of bending part (7) outside surface and counterdie (6) outside surface.
2. a kind of bender angle detection device according to claim 1, is characterized in that: described slide block is provided with displacement transducer on (13), detects in real time the positional information of slide block (13) on guide rail (14).
3. a kind of bender angle detection device according to claim 1, is characterized in that: the striation of projection on the same group (16) that the described striation projector (11) guarantees bending part (7) both sides while installing is in same plane.
4. a kind of bender angle detection device according to claim 1, is characterized in that: the afterbody of described servomotor (4) is towards fuselage (1) inner side.
5. a kind of bender angle detection device according to claim 1, is characterized in that: described left camera (9) and both optical axis included angles of right camera (10) change between 0-90 °.
6. a kind of bender angle detection device according to claim 1, is characterized in that: the striation width that the described striation projector (11) projects is less than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471260.2A CN103575238B (en) | 2013-10-10 | 2013-10-10 | A kind of bender angle detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310471260.2A CN103575238B (en) | 2013-10-10 | 2013-10-10 | A kind of bender angle detection device |
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| Publication Number | Publication Date |
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| CN103575238A true CN103575238A (en) | 2014-02-12 |
| CN103575238B CN103575238B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310471260.2A Expired - Fee Related CN103575238B (en) | 2013-10-10 | 2013-10-10 | A kind of bender angle detection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058020A1 (en) * | 2014-10-16 | 2016-04-21 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Bending angle measuring method |
| CN107206451A (en) * | 2014-12-12 | 2017-09-26 | 屋罗斯·杜兰强尼 | The application of shape bending process of the 3D video cameras on the bending machine of three and four rollers |
| CN107436126A (en) * | 2016-05-27 | 2017-12-05 | 江苏精电气科技有限公司 | Power distribution cabinet flanging flat plate testing apparatus |
| CN110686622A (en) * | 2019-10-08 | 2020-01-14 | 华南理工大学 | Method for measuring train wheel attack angle |
| CN112718942A (en) * | 2020-12-08 | 2021-04-30 | 江苏弘东工业自动化有限公司 | Bending angle correction method for bending machine |
| CN112845694A (en) * | 2021-01-21 | 2021-05-28 | 湖北理工学院 | Bending angle measurement compensation system and compensation method for bending machine |
| EP4063783A1 (en) * | 2021-03-25 | 2022-09-28 | Bystronic Laser AG | Method and device for bend angle determination on a bending machine |
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| JPH10286627A (en) * | 1997-04-14 | 1998-10-27 | Amada Eng Center:Kk | Work inclination angle measuring method, work bend angle measuring method, work inclination quantity measuring instrument and work bend angle measuring instrument |
| CN1216103A (en) * | 1996-02-13 | 1999-05-05 | 阿玛达美都丽股份有限公司 | Angle detection method for bending machine, angle detection apparatus and angle sensor |
| US6473537B1 (en) * | 1998-02-07 | 2002-10-29 | Komatsu Ltd. | Process and system for detecting bend angle |
| CN1683095A (en) * | 2005-03-09 | 2005-10-19 | 吉素琴 | Servo motor driven digital control plate bending machine |
| DE202010006391U1 (en) * | 2010-05-04 | 2010-11-04 | Bystronic Laser Ag | Angle measuring device for press brakes |
-
2013
- 2013-10-10 CN CN201310471260.2A patent/CN103575238B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1216103A (en) * | 1996-02-13 | 1999-05-05 | 阿玛达美都丽股份有限公司 | Angle detection method for bending machine, angle detection apparatus and angle sensor |
| JPH10286627A (en) * | 1997-04-14 | 1998-10-27 | Amada Eng Center:Kk | Work inclination angle measuring method, work bend angle measuring method, work inclination quantity measuring instrument and work bend angle measuring instrument |
| US6473537B1 (en) * | 1998-02-07 | 2002-10-29 | Komatsu Ltd. | Process and system for detecting bend angle |
| CN1683095A (en) * | 2005-03-09 | 2005-10-19 | 吉素琴 | Servo motor driven digital control plate bending machine |
| DE202010006391U1 (en) * | 2010-05-04 | 2010-11-04 | Bystronic Laser Ag | Angle measuring device for press brakes |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058020A1 (en) * | 2014-10-16 | 2016-04-21 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Bending angle measuring method |
| US10436579B2 (en) | 2014-10-16 | 2019-10-08 | Trumpf Maschinen Austria Gmbh & Co. Kg. | Bending angle measuring method |
| CN107206451A (en) * | 2014-12-12 | 2017-09-26 | 屋罗斯·杜兰强尼 | The application of shape bending process of the 3D video cameras on the bending machine of three and four rollers |
| CN107206451B (en) * | 2014-12-12 | 2019-09-03 | 屋罗斯·杜兰强尼 | The application of shape bending process of the 3D video camera on the bending machine of three and four rollers |
| CN107436126A (en) * | 2016-05-27 | 2017-12-05 | 江苏精电气科技有限公司 | Power distribution cabinet flanging flat plate testing apparatus |
| CN110686622A (en) * | 2019-10-08 | 2020-01-14 | 华南理工大学 | Method for measuring train wheel attack angle |
| CN112718942A (en) * | 2020-12-08 | 2021-04-30 | 江苏弘东工业自动化有限公司 | Bending angle correction method for bending machine |
| CN112845694A (en) * | 2021-01-21 | 2021-05-28 | 湖北理工学院 | Bending angle measurement compensation system and compensation method for bending machine |
| EP4063783A1 (en) * | 2021-03-25 | 2022-09-28 | Bystronic Laser AG | Method and device for bend angle determination on a bending machine |
| WO2022200488A1 (en) * | 2021-03-25 | 2022-09-29 | Bystronic Laser Ag | Method and device for determining a bending angle on a bending machine |
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| Publication number | Publication date |
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| CN103575238B (en) | 2016-02-24 |
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