CN105562467A - Method for on-line real-time detection controlled rapid bend forming of plate - Google Patents
Method for on-line real-time detection controlled rapid bend forming of plate Download PDFInfo
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- CN105562467A CN105562467A CN201410540889.2A CN201410540889A CN105562467A CN 105562467 A CN105562467 A CN 105562467A CN 201410540889 A CN201410540889 A CN 201410540889A CN 105562467 A CN105562467 A CN 105562467A
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Abstract
The invention provides a method for on-line real-time detection controlled rapid bend forming of a plate. The method adopts closed-loop control principle, according to the springback rule of each point's springback displacement amount along with deformation displacement amount during plate cold bending, utilizes the fast adjustable characteristic of a ship hull outer plate numerical control plate bending machine reconfigurable die, draws support from three-dimensional laser or "magnetism induced" on-line measurement technology to achieve real-time feedback of the forming effect and real-time online quick solution of single ship hull plate's springback problem, and ensures plate forming accuracy. The method provided by the invention controls the positions of a finite number of points (coincident with each pressure head primitive center line of a lower die) on the plate surface to guarantee the shape accuracy of a formed part. When the x, y coordinates of plate control points on the adjustable lower die are already known, and only an upper die needs to be removed after plate forming, three-dimensional coordinates can be obtained by measuring the height values of the control points with a laser instrument (or "magnetism induced instrument"), and then surface shape coordinates can be converted to compare error. In a gradual bending-approaching process, the plate is processed on line in real time and has no need to leave a workbench before the completion of forming, thus being beneficial to improve the forming efficiency.
Description
Technical field
The present invention relates to cold bending of ship plate molding field, be specifically related to a kind of method be shaped for the Quick bending of sheet material on-line real-time measuremen control.
Background technology
Can resilience be the key factor affecting cold bending of ship plate forming accuracy, be also the key point that effectively realize Automatic Control.At present, for the main thought utilizing reconfigurable die to carry out Sheet Metal Surface Form springback control research be both at home and abroad: the feature fully using reconfigurable die convenient tune shape, based on Finite Element Method, Computer Simulation or numerical simulation are carried out to Sheet Metal Forming, revise mould by springback Prediction.The factor affecting forming accuracy is a lot, during by finite element numerical simulation computing ship hull plate cold bending resilience problem, asks, but also there is comparatively big error, can not meet the requirement calculated real-time in the deck of boat formed machining when not only needing a large amount of.
Summary of the invention
In order to overcome the deficiency of above-mentioned condition, the invention provides a kind of method be shaped for the Quick bending of sheet material on-line real-time measuremen control.The present invention takes loop control theory, according to each point resilience displacement during plate cold bending with the rebound law of deformation displacement amount, utilize ship hull plate numerical control squeezer reconfigurable die fast tunable feature, and by three-dimensional laser or " mangneto " line Measurement Technique Real-time Feedback forming effect, the resilience problem of real-time online quick solution single-piece ship hull plate, guarantees sheet material forming precision.
The present invention is with the calculated results of sheet material forming resilience and passes through the rule of practice confirmation for guidance, use for reference the Step wise approximation bending springback processing method accumulated in boats and ships rib in vain dynamic working research, in conjunction with online real-time measure and control strategy, carry out the method for the quick Step wise approximation bending forming moving processing for sheet material in vain.
Quick Step wise approximation crooked forming method is that the position by controlling plate surface limited point (point overlapped with counterdie each pressure head element body center line) ensures the form accuracy of drip molding.The x at the sheet material control point on adjustable counterdie, y coordinate is known, under removing patrix situation after only needing sheet material forming, by laser (or " mangneto instrument; ') measure control point height value three-dimensional coordinate, and then converse curve form coordinate, relative error.In Step wise approximation BENDING PROCESS, sheet material real-time online is processed, and without the need to leaving workbench before shaping completes, is conducive to improving forming efficiency.
When quick Step wise approximation bending forming mechanism is cold bending, on the deck of boat, the distortion of each point interknits with interactive.According to the three-dimension curved surface deck of boat Form springback amount of theory calculate and machining Practice gained with the Changing Pattern of deflection, draw the curve that on plate, any point resilience displacement changes with deformation displacement amount; When measuring in real time drip molding shape, also only need the height coordinate of the point of sheet material measurement surface and counterdie each pressure head element body central axes, namely the springback control of sheet material has been come by the position of the control point relevant with sheet material.
Claims (3)
1. the method for the Quick bending shaping controlled for sheet material on-line real-time measuremen, it is characterized in that taking loop control theory, according to each point resilience displacement during plate cold bending with the rebound law of deformation displacement amount, utilize ship hull plate numerical control squeezer reconfigurable die fast tunable feature, and by three-dimensional laser or " mangneto " line Measurement Technique Real-time Feedback forming effect, the resilience problem of real-time online quick solution single-piece ship hull plate, guarantees sheet material forming precision.
2. it is characterized in that the position by controlling plate surface limited point (point overlapped with counterdie each pressure head element body center line) ensures the form accuracy of drip molding; The x at the sheet material control point on adjustable counterdie, y coordinate is known, under removing patrix situation after only needing sheet material forming, by laser (or " mangneto instrument; ') measure control point height value three-dimensional coordinate, and then converse curve form coordinate, relative error.
3. in Step wise approximation BENDING PROCESS, sheet material real-time online is processed, and without the need to leaving workbench before shaping completes, is conducive to improving forming efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540889.2A CN105562467A (en) | 2014-10-14 | 2014-10-14 | Method for on-line real-time detection controlled rapid bend forming of plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410540889.2A CN105562467A (en) | 2014-10-14 | 2014-10-14 | Method for on-line real-time detection controlled rapid bend forming of plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105562467A true CN105562467A (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410540889.2A Pending CN105562467A (en) | 2014-10-14 | 2014-10-14 | Method for on-line real-time detection controlled rapid bend forming of plate |
Country Status (1)
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| CN (1) | CN105562467A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345857A (en) * | 2016-09-29 | 2017-01-25 | 哈尔滨工业大学 | Method for plane segmented approximation of arc |
| CN111028208A (en) * | 2019-11-22 | 2020-04-17 | 华南理工大学 | Method for evaluating resilience of plate forming piece |
| CN113329827A (en) * | 2019-03-12 | 2021-08-31 | 宝马股份公司 | Method for controlling a bending process for bending a bending body |
| CN113953355A (en) * | 2021-11-02 | 2022-01-21 | 江南造船(集团)有限责任公司 | Method for forming bent plate by utilizing three-dimensional numerical control plate bending machine |
| US12030109B2 (en) | 2019-03-12 | 2024-07-09 | Bayerische Motoren Werke Aktiengesellschaft | Method for controlling a bending process for bending a bending body |
-
2014
- 2014-10-14 CN CN201410540889.2A patent/CN105562467A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106345857A (en) * | 2016-09-29 | 2017-01-25 | 哈尔滨工业大学 | Method for plane segmented approximation of arc |
| CN106345857B (en) * | 2016-09-29 | 2019-03-08 | 哈尔滨工业大学 | A kind of method that flat section approaches circular arc |
| CN113329827A (en) * | 2019-03-12 | 2021-08-31 | 宝马股份公司 | Method for controlling a bending process for bending a bending body |
| US12030109B2 (en) | 2019-03-12 | 2024-07-09 | Bayerische Motoren Werke Aktiengesellschaft | Method for controlling a bending process for bending a bending body |
| CN111028208A (en) * | 2019-11-22 | 2020-04-17 | 华南理工大学 | Method for evaluating resilience of plate forming piece |
| CN111028208B (en) * | 2019-11-22 | 2023-05-23 | 华南理工大学 | Method for evaluating resilience of plate forming piece |
| CN113953355A (en) * | 2021-11-02 | 2022-01-21 | 江南造船(集团)有限责任公司 | Method for forming bent plate by utilizing three-dimensional numerical control plate bending machine |
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Application publication date: 20160511 |
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| WD01 | Invention patent application deemed withdrawn after publication |