CN112007969A - Springback control method for high-strength steel plate side shaping process - Google Patents
Springback control method for high-strength steel plate side shaping process Download PDFInfo
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- CN112007969A CN112007969A CN202010650914.8A CN202010650914A CN112007969A CN 112007969 A CN112007969 A CN 112007969A CN 202010650914 A CN202010650914 A CN 202010650914A CN 112007969 A CN112007969 A CN 112007969A
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- shaping
- die
- side shaping
- die insert
- strength steel
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- 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
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
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- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
Abstract
The invention belongs to the technical field of punch forming, and particularly relates to a springback control method for a side shaping process of a high-strength steel plate. The method comprises the following steps: 1) the side shaping female die insert and the shaping male die are processed by different resilience angles, so that the modification of the molded surfaces of the side shaping female die insert and the shaping male die is not uniform; 2) when the side shaping action starts, the side shaping female die starts to touch materials after the material pressing plate presses the plate materials; 3) the side shaping female die insert starts to shape along with the gradual closing of the die; 4) and finally, the shaping of the side shaping female die insert is completed, and because the molded surface of the shaping male die and the molded surface of the side shaping female die insert are not unified, the shaping force is concentrated on the product fillet to control the side wall to rebound, so that the side shaping action is completed. The invention not only reduces the rebound value after shaping, but also has simple die structure, is beneficial to field debugging and connection production, prolongs the service life of the die and reduces the die repair cost.
Description
Technical Field
The invention belongs to the technical field of punch forming, and particularly relates to a springback control method for a side shaping process of a high-strength steel plate.
Background
In recent years, energy conservation, environmental protection, safety and light weight of the automobile body are main development trends of the automobile industry. Therefore, the application of high-strength steel also occupies a certain position, but due to the characteristics of poor forming performance of a high-strength steel plate and the like, the rebound is easy to generate in the production process, and the improvement of the dimensional accuracy of parts is always the target of the stamping industry.
In the past stamping production, the large-angle hanging wedge mainly adopted by the side shaping type of a workpiece is used for carrying out curved surface transformation on the side wall according to the resilience value, meanwhile, the inclined shaping insert is attached with a product fillet, the side wall resilience is controlled by the pier product fillet in the shaping process, but the product fillet is easy to generate extra elastic deformation in the actual production, and other uncertain resilience influence is brought.
Disclosure of Invention
The invention provides a springback control method for a side shaping process of a high-strength steel plate, which not only reduces the springback value after shaping, but also has a simple die structure, is beneficial to field debugging and connection production, prolongs the service life of the die, reduces die repair cost, and solves the problems existing in the springback of the existing high-strength steel plate.
The technical scheme of the invention is described as follows by combining the attached drawings:
a springback control method for a high-strength steel plate side shaping process comprises the following steps:
1) the side shaping die insert 5 and the shaping convex die 6 are processed by different resilience angles, so that the modification of the molded surfaces of the side shaping die insert 5 and the shaping convex die 6 is not uniform;
2) when the side shaping action starts, the side shaping female die 5 starts to touch materials after the material pressing plate 2 presses the plate materials;
3) with the mold gradually closed, the side shaping die insert 5 starts to shape;
4) and finally, shaping the side shaping die insert 5 to the end, wherein the shaping force is concentrated on the product fillet to control the side wall to rebound because the profile of the shaping convex die 6 is not uniform with the profile of the side shaping die insert 5, so that the side shaping action is completed.
When the molded surfaces of the side shaping female die insert 5 and the shaping male die 6 are reformed, the force is concentrated on the product fillet when the shaping is finished.
The molded surface of the side shaping female die insert 5 is reformed, and a rebound angle of 3 degrees is arranged.
The molded surface of the shaping convex die 6 is reformed, and a rebound angle of 5 degrees is arranged.
The side shaping die adopted by the control method comprises an upper bottom plate 1, a pressure plate 2, a pressure plate power source 3, a side shaping wedge 4, a side shaping female die insert 5, a shaping male die 6 and a lower bottom plate; the side shaping concave die insert 5 is fixed on the side shaping wedge 4 through a bolt; the side shaping wedge 4 is fixed on the lower bottom plate through a bolt; the material pressing plate 2 and the pressure plate power source 3 are fixed on the upper bottom plate 1 in a limiting way; the shaping male die 6 is fixed on the lower base plate through bolts.
The pressure plate power source 3 is a spring or a nitrogen cylinder.
The invention has the beneficial effects that:
1) the invention not only reduces the rebound value after shaping, but also has simple die structure, and is beneficial to field debugging and line production;
2) the invention can prolong the service life of the die and reduce the die repair cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic structural view of a side dressing mold according to the present invention;
FIG. 2 is a schematic process diagram of the rebound control method of the present invention;
FIG. 3 is a schematic process diagram of the rebound control method of the present invention.
In the figure:
1. an upper base plate;
2. a material pressing plate;
3. a pressure plate power source;
4. a side shaping wedge;
5. side-shaping die inserts;
6. and (5) shaping the male die.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Referring to fig. 1, a side shaping die adopted by a springback control method of a high-strength steel plate side shaping process comprises an upper base plate 1, a pressure plate 2, a pressure plate power source 3, a side shaping wedge 4, a side shaping die insert 5, a shaping convex die 6 and a lower base plate; the side shaping concave die insert 5 is fixed on the side shaping wedge 4 through a bolt; the side shaping wedge 4 is fixed on the lower bottom plate through a bolt; the material pressing plate 2 and the pressure plate power source 3 are fixed on the upper bottom plate 1 in a limiting way; the shaping male die 6 is fixed on the lower base plate through bolts.
The pressure plate power source 3 is a spring or a nitrogen cylinder.
Referring to fig. 2 and 3, a method for controlling springback of a high strength steel plate side forming process includes the steps of:
firstly, the side shaping die insert 5 and the shaping convex die 6 are processed by different resilience angles, so that the modification of the molded surfaces of the side shaping die insert 5 and the shaping convex die 6 is not uniform;
when the molded surfaces of the side shaping female die insert 5 and the shaping male die 6 are reformed, the force is concentrated on the product fillet when the shaping is finished.
The molded surface of the side shaping female die insert 5 is reformed, and a rebound angle of 3 degrees is arranged.
The molded surface of the shaping convex die 6 is reformed, and a rebound angle of 5 degrees is arranged.
Step two, when the side shaping action starts, the side shaping female die 5 starts to touch materials after the material pressing plate 2 presses the plate materials;
step three, with the mold gradually closed, the side shaping die insert 5 starts to shape;
and step four, finally shaping the side shaping die insert 5 to the end, and concentrating the shaping force on the product fillet to control the side wall to rebound because the profile of the shaping convex die 6 is not uniform with the profile of the side shaping die insert 5, thereby finishing the side shaping action.
Examples
The flanging process is applied to a flanging process of a high-strength steel plate part in a certain project, and the part is characterized by high-strength steel and S shape.
The method comprises the following steps:
firstly, the side shaping die insert 5 and the shaping convex die 6 are processed by different resilience angles, so that the modification of the molded surfaces of the side shaping die insert 5 and the shaping convex die 6 is not uniform;
when the molded surfaces of the side shaping female die insert 5 and the shaping male die 6 are reformed, the force is concentrated on the product fillet when the shaping is finished.
The molded surface of the side shaping female die insert 5 is reformed, and a rebound angle of 3 degrees is arranged.
The molded surface of the shaping convex die 6 is reformed, and a rebound angle of 5 degrees is arranged.
The high-strength steel plate part prepared by the method is finally shaped in place directly on the side, and the times of shaping are reduced compared with the times of traditional methods.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A method for controlling springback in a high-strength steel plate side shaping process is characterized by comprising the following steps:
1) the side shaping female die insert (5) and the shaping male die (6) adopt different rebound angles for processing, so that the modification of the molded surfaces of the side shaping female die insert (5) and the shaping male die (6) is not uniform;
2) when the side shaping action starts, the side shaping female die (5) starts to touch materials after the material pressing plate (2) presses the plate;
3) the side shaping die insert (5) starts to shape along with the gradual closing of the die;
4) and finally, the side shaping die insert (5) is shaped to the end, and because the molded surface of the shaping convex die (6) is not uniform with the molded surface of the side shaping die insert (5), the shaping force is concentrated on the product fillet to control the side wall to rebound, and the side shaping action is completed.
2. The method for controlling the resilience of the high-strength steel plate side reshaping process is characterized in that the force is concentrated on the product fillet when the reshaping bottom is ensured when the molded surfaces of the side reshaping die insert (5) and the reshaping convex die (6) are reformed.
3. The method for controlling resilience in the high-strength steel plate side shaping process according to claim 1, wherein the profile of the side shaping die insert (5) is modified to have a resilience angle of 3 degrees.
4. The method for controlling resilience of a high-strength steel plate side shaping process according to claim 1, wherein the shaping convex die (6) is subjected to profile modification and is subjected to a resilience angle of 5 degrees.
5. The rebound control method of the high-strength steel plate side shaping process according to claim 1, wherein the side shaping die adopted by the control method comprises an upper bottom plate (1), a pressure plate (2), a pressure plate power source (3), a side shaping wedge (4), a side shaping die insert (5), a shaping punch (6) and a lower bottom plate; the side shaping concave die insert (5) is fixed on the side shaping wedge (4) through a bolt; the side shaping wedge (4) is fixed on the lower bottom plate through a bolt; the pressure plate (2) and the pressure plate power source (3) are fixed on the upper bottom plate (1) in a limiting way; and the shaping male die (6) is fixed on the lower bottom plate through bolts.
6. The method for controlling springback in the high-strength steel plate side reforming process according to claim 1, wherein the pressure plate power source (3) is a spring or a nitrogen cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650914.8A CN112007969A (en) | 2020-07-08 | 2020-07-08 | Springback control method for high-strength steel plate side shaping process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010650914.8A CN112007969A (en) | 2020-07-08 | 2020-07-08 | Springback control method for high-strength steel plate side shaping process |
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| CN112007969A true CN112007969A (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010650914.8A Pending CN112007969A (en) | 2020-07-08 | 2020-07-08 | Springback control method for high-strength steel plate side shaping process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117308790A (en) * | 2023-12-01 | 2023-12-29 | 泊头市兴达汽车模具制造有限公司 | Detection method for improving precision and reducing correction rounds, electronic equipment and storage medium |
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|---|---|---|---|---|
| JPH01166828A (en) * | 1987-12-21 | 1989-06-30 | Matsushita Electric Ind Co Ltd | Die for forming shadow mask |
| CN101856693A (en) * | 2010-05-25 | 2010-10-13 | 李义 | Moving die compressive stress decomposing and forming method, volume spring and U-shaped bolt composite bending die |
| CN202180145U (en) * | 2011-07-21 | 2012-04-04 | 浙江正邦汽车模具有限公司 | Rebounding device for beam-like part |
| US8418518B2 (en) * | 2010-09-03 | 2013-04-16 | Cheng Uei Precision Industry Co., Ltd. | Contact bending fixture |
| CN103894491A (en) * | 2014-04-02 | 2014-07-02 | 昆山达亚汽车零部件有限公司 | Die with avoiding structure |
| CN107138618A (en) * | 2017-06-27 | 2017-09-08 | 昆山申凌精密金属工业有限公司 | A kind of punch and matrix gap adjusting structure |
| CN207479349U (en) * | 2017-10-27 | 2018-06-12 | 郑州日产汽车有限公司 | Side shaping mould with staged driving wedge mechanism |
| CN110548811A (en) * | 2019-10-17 | 2019-12-10 | 湖北省齐星汽车车身股份有限公司 | Novel side plastic mould of whole side wall of processing |
-
2020
- 2020-07-08 CN CN202010650914.8A patent/CN112007969A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01166828A (en) * | 1987-12-21 | 1989-06-30 | Matsushita Electric Ind Co Ltd | Die for forming shadow mask |
| CN101856693A (en) * | 2010-05-25 | 2010-10-13 | 李义 | Moving die compressive stress decomposing and forming method, volume spring and U-shaped bolt composite bending die |
| US8418518B2 (en) * | 2010-09-03 | 2013-04-16 | Cheng Uei Precision Industry Co., Ltd. | Contact bending fixture |
| CN202180145U (en) * | 2011-07-21 | 2012-04-04 | 浙江正邦汽车模具有限公司 | Rebounding device for beam-like part |
| CN103894491A (en) * | 2014-04-02 | 2014-07-02 | 昆山达亚汽车零部件有限公司 | Die with avoiding structure |
| CN107138618A (en) * | 2017-06-27 | 2017-09-08 | 昆山申凌精密金属工业有限公司 | A kind of punch and matrix gap adjusting structure |
| CN207479349U (en) * | 2017-10-27 | 2018-06-12 | 郑州日产汽车有限公司 | Side shaping mould with staged driving wedge mechanism |
| CN110548811A (en) * | 2019-10-17 | 2019-12-10 | 湖北省齐星汽车车身股份有限公司 | Novel side plastic mould of whole side wall of processing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117308790A (en) * | 2023-12-01 | 2023-12-29 | 泊头市兴达汽车模具制造有限公司 | Detection method for improving precision and reducing correction rounds, electronic equipment and storage medium |
| CN117308790B (en) * | 2023-12-01 | 2024-03-12 | 泊头市兴达汽车模具制造有限公司 | Detection method for improving precision and reducing correction rounds, electronic equipment and storage medium |
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Application publication date: 20201201 |
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