CN111914349A - SE-based method for controlling surface defects of quarter window of side wall outer plate - Google Patents
SE-based method for controlling surface defects of quarter window of side wall outer plate Download PDFInfo
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- CN111914349A CN111914349A CN202010627554.XA CN202010627554A CN111914349A CN 111914349 A CN111914349 A CN 111914349A CN 202010627554 A CN202010627554 A CN 202010627554A CN 111914349 A CN111914349 A CN 111914349A
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000007547 defect Effects 0.000 title claims abstract description 39
- 230000008569 process Effects 0.000 claims abstract description 23
- 235000013312 flour Nutrition 0.000 claims abstract description 13
- 238000000465 moulding Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
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- 230000007704 transition Effects 0.000 description 2
- 238000012300 Sequence Analysis Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of automobiles, and particularly relates to a method for controlling surface defects of a quarter window of a side wall outer plate based on SE. The method comprises the following steps: firstly, measuring key parameter data by a conventional process means; judging whether the step is a one-layer step model or a two-layer step model according to the key parameters; and step three, the defects of the flour products disappear by adjusting the height of the upper step. The invention is provided by researching the principle of generating the surface defect problem of the rear windshield of the side wall outer plate workpiece. The invention can effectively improve the early-stage modeling difficulty of the product, relieve the molding state of the area, reduce the surface defect problems of unsmooth and smooth fillet, reverse warping, A surface collapse and the like of the characteristic fillet of the area, ensure the molding quality of a workpiece in the production process, reduce the process difficulty, effectively reduce the risk of the surface defect, effectively reduce the later-stage debugging difficulty, reduce the number of rounds of rectification and improvement and shorten the manufacturing period.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a method for controlling surface defects of a quarter window of a side wall outer plate based on SE.
Background
SE is the Stamping synchronization engineering.
The side wall outer plate is the most important part with the largest size and the most complex shape in the outer covering part of the passenger car body, is the assembly reference of a whole car stamping part, is positioned at the most important position of the appearance of the whole car, and has extremely high requirements on the control of the surface quality and the size precision. The matching relationship is extremely complex, strict tolerance matching requirements are met on main parts such as a fender, a top cover, a vehicle door, a hair cover, a rear tail lamp and a rear bumper, and the A-level modeling curved surface is almost distributed in a first-level visible area of a vehicle body. In summary, in order to realize the design intention of the side wall outer plate product and ensure the modeling characteristics, the stamping forming process must be researched to ensure the surface quality and the dimensional accuracy of the products in each process of the stamping die in the forming process.
In the forming process of the side wall outer plate, the problems of unsmooth characteristic appearance circle R and surface quality defect of A surface collapse frequently occur due to complex modeling and difficult process realization of a rear air window area, and under the conventional condition, a large amount of simulation verification is required to be carried out in the product development stage to repeatedly optimize the product; in the later manufacturing stage, the debugging means such as the shaping amount and the transition range of the working procedure before and after the optimization of the fitter try to solve the problem. The mode has large workload of the early-stage simulation test, overlong optimization period and serious dependence on the operating skill of a bench worker in the later stage, and can not ensure to thoroughly eliminate the surface defect of the area, influence the visual effect of the area and reduce the aesthetic property of the whole vehicle.
The rear wind window area of the side wall outer plate has sharp modeling, the plate material flows complicatedly and is difficult to form, and the forming state of the area can not be controlled by a conventional means basically. The current scheme is to slow down the drawing forming state by drawing, enlarging the side wall draft angle and other processing modes, and then finish the characteristics through the shaping process. Because the method is realized through two processes, surface quality defects such as cracking, diameter reduction, unsmooth characteristic appearance round angle, reverse warping, collapse of A surface (vehicle body appearance curved surface) and the like often occur. The method can only be tried to solve by debugging means such as later-stage debugging of bench workers for optimizing the transition range of the drawing and shaping processes, the method seriously depends on the operating skills of the bench workers, the optimization period is too long, and the surface quality defect at the position cannot be completely eliminated. The area of the side wall outer plate belongs to a first-level visible area, and the defects in the area can influence the visible effect of the area and reduce the attractiveness of the whole automobile.
Disclosure of Invention
The invention provides a method for controlling surface defects of a quarter window of a side wall outer plate based on SE (sequence analysis), which is provided by researching the principle of generating surface defects of a rear windshield of a side wall outer plate workpiece. The invention can effectively improve the early-stage modeling difficulty of the product, relieve the molding state of the area, reduce the surface defect problems of unsmooth and smooth fillet, reverse warping, A surface collapse and the like of the characteristic fillet of the area, ensure the molding quality of a workpiece in the production process, reduce the process difficulty, effectively reduce the risk of the surface defect, effectively reduce the later-stage debugging difficulty, reduce the number of rounds of rectification and improvement and shorten the manufacturing period.
The technical scheme of the invention is described as follows by combining the attached drawings:
a method for controlling surface defects of a quarter window of a side outer plate based on SE comprises the following steps:
measuring key parameter data by a conventional process means;
judging whether the step is a one-layer step model or a two-layer step model according to the key parameters;
the defects of the flour products disappear by adjusting the height of the upper step.
A method for controlling surface defects of a quarter window of a side wall outer plate based on SE comprises the following steps:
firstly, measuring key parameter data by a conventional process means;
judging whether the step is a one-layer step model or a two-layer step model according to the key parameters;
and step three, the defects of the flour products disappear by adjusting the height of the upper step.
The key parameter data comprise a main ridge included angle alpha of the side wall outer plate triangular window, the radius R of a plane fillet of the side wall outer plate triangular window and the depth H between a lower main ridge and a central line of the side wall outer plate triangular window.
The concrete method of the third step is as follows:
when H is less than 10mm and alpha R/H is more than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products disappear; when H is larger than or equal to 10mm, the height of the upper step is controlled within 10mm, alpha R/H is larger than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products disappear.
The side wall outer plate is provided with a triangular window manufactured by the process method.
The invention has the beneficial effects that:
1) according to the invention, through the research on the forming principle of the rear air window area of the side wall outer plate, the forming difficulty is reduced in the product forming design stage, the problems of surface defects such as unsmooth characteristic round angle, collapse of A surface and the like caused by rapid forming at the position are solved, the workload of repeated simulation tests is reduced, and the product development period is effectively shortened;
2) the invention simplifies the process design flow, reduces the molding difficulty, shortens the design period and reduces the technical capability requirement on designers;
3) in the later-stage workpiece debugging and rectifying process, the high requirement of relying on the operating skill of a bench worker is reduced, the workload of workpiece surface quality improvement and rectification is reduced, and the rectifying and rectifying period is shortened.
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 wall rear windshield;
FIG. 2 is a schematic diagram of key parameters of a side wall rear windshield;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a schematic structural view of a molding state I;
FIG. 5 is a schematic structural view of a second molding state;
FIG. 6 is a schematic diagram of key parameters of a side wall rear windshield according to an embodiment of the invention;
fig. 7 is a cross-sectional view taken at B-B in fig. 6.
In the figure: 1. a triangular window area;
2. the included angle alpha of the main ridge line of the triangular window of the side wall outer plate;
3. the radius R of a plane fillet of the side wall outer plate triangular window;
4. the depth H between the lower structure surface and the surface A of the side wall outer plate triangular window;
5. a first structural face;
6. a first A face;
7. modeling a layer of steps;
8. a second structural surface;
9. a second A surface;
10. modeling the two layers of steps.
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, fig. 1 is a schematic structural view of a quarter outer panel quarter window 1.
A method for controlling surface defects of a quarter window of a side wall outer plate based on SE comprises the following steps:
referring to fig. 2 and 3, in step one, key parameter data is measured by a conventional process means;
the key parameters include: the main ridge included angle alpha 1 of the side wall outer plate triangular window, the radius R2 of the plane fillet of the side wall outer plate triangular window and the depth H3 between the lower structure surface and the surface A of the side wall outer plate triangular window;
referring to fig. 4 and 5, in the second step, whether the first-layer step model or the second-layer step model is determined according to the key parameters of the first step;
and step three, the defects of the flour products disappear by adjusting the height of the upper step. The method comprises the following specific steps:
referring to fig. 4, which is a one-step structure, the first structure surface 5 and the first a surface 9 are separated by a distance H; 7, forming a layer of steps;
when H is less than 10mm and alpha R/H is more than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products disappear;
referring to fig. 5, the second structure plane 8 is separated from the second a plane by a distance H; 8, forming a two-layer step;
when H is larger than or equal to 10mm, the height of the upper step is controlled within 10mm, alpha R/H is larger than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products disappear.
Examples
A method for controlling surface defects of a quarter window of a side wall outer plate based on SE comprises the following steps:
step one, referring to fig. 6 and 7, measuring key parameter data by a conventional process means;
the key parameters of the side wall triangular window of the motorcycle are as follows: α 52.3 °, R21.6 mm, H21 mm; the shape is needed according to the mode of figure 5, the height of the upper step is controlled within 10mm, alpha R/H is more than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products basically disappear.
According to the invention, through the research on the forming principle of the rear air window area of the side wall outer plate, the forming difficulty is reduced in the product forming design stage, the problems of surface defects such as unsmooth characteristic round angle, collapse of A surface and the like caused by rapid forming at the position are solved, the workload of repeated simulation tests is reduced, and the product development period is effectively shortened;
the invention simplifies the process design flow, reduces the molding difficulty, shortens the design period and reduces the technical capability requirement on designers;
in the later-stage workpiece debugging and rectifying process, the high requirement of relying on the operating skill of a bench worker is reduced, the workload of workpiece surface quality improvement and rectification is reduced, and the rectifying and rectifying period is shortened.
In the description of the present embodiment, the terms "first" and "second" are used only for descriptive distinction and have no special meaning.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (5)
1. A method for controlling surface defects of a quarter window of a side wall outer plate based on SE is characterized by comprising the following steps:
measuring key parameter data by a conventional process means;
judging whether the step is a one-layer step model or a two-layer step model according to the key parameters;
the defects of the flour products disappear by adjusting the height of the upper step.
2. The SE-based method for controlling surface defects of a quarter window of a quarter outer panel according to claim 1, wherein the method comprises the following steps:
firstly, measuring key parameter data by a conventional process means;
judging whether the step is a one-layer step model or a two-layer step model according to the key parameters;
and step three, the defects of the flour products disappear by adjusting the height of the upper step.
3. The SE-based method for controlling surface defects of the quarter window of the side wall outer plate according to claim 2, wherein the key parameter data comprise a main ridge included angle alpha of the quarter window of the side wall outer plate, a radius R of a plane fillet of the quarter window of the side wall outer plate and a depth H between a lower structure surface and an A surface of the quarter window of the side wall outer plate.
4. The SE-based method for controlling the surface defects of the quarter window of the outer side frame plate according to claim 3, wherein the concrete method in the third step is as follows:
when H is less than 10mm and alpha R/H is more than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products disappear; when H is larger than or equal to 10mm, the height of the upper step is controlled within 10mm, alpha R/H is larger than or equal to 120, the area meets the one-step forming in-place condition, and the defects of the flour products disappear.
5. An exterior quarter panel characterized in that it has a triangular window manufactured using the process of any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010627554.XA CN111914349A (en) | 2020-07-01 | 2020-07-01 | SE-based method for controlling surface defects of quarter window of side wall outer plate |
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| CN202010627554.XA CN111914349A (en) | 2020-07-01 | 2020-07-01 | SE-based method for controlling surface defects of quarter window of side wall outer plate |
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Citations (5)
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|---|---|---|---|---|
| CN101439377A (en) * | 2008-12-22 | 2009-05-27 | 奇瑞汽车股份有限公司 | Stamping processing method for related joint of vehicle side-frame outer plate and roof board |
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| CN102814430A (en) * | 2012-08-14 | 2012-12-12 | 奇瑞汽车股份有限公司 | Stamping method of top cover outer plate with skylight |
| CN102991580A (en) * | 2012-12-03 | 2013-03-27 | 奇瑞汽车股份有限公司 | Automobile side body outer plate-top cover lap joint region structure and design method thereof |
| JP2016203256A (en) * | 2015-04-22 | 2016-12-08 | 新日鐵住金株式会社 | Manufacturing method of press formed article, press formed article and press device |
-
2020
- 2020-07-01 CN CN202010627554.XA patent/CN111914349A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439377A (en) * | 2008-12-22 | 2009-05-27 | 奇瑞汽车股份有限公司 | Stamping processing method for related joint of vehicle side-frame outer plate and roof board |
| CN102730073A (en) * | 2012-06-06 | 2012-10-17 | 奇瑞汽车股份有限公司 | Automobile gusset outer plate A pillar tail end structure |
| CN102814430A (en) * | 2012-08-14 | 2012-12-12 | 奇瑞汽车股份有限公司 | Stamping method of top cover outer plate with skylight |
| CN102991580A (en) * | 2012-12-03 | 2013-03-27 | 奇瑞汽车股份有限公司 | Automobile side body outer plate-top cover lap joint region structure and design method thereof |
| JP2016203256A (en) * | 2015-04-22 | 2016-12-08 | 新日鐵住金株式会社 | Manufacturing method of press formed article, press formed article and press device |
Non-Patent Citations (3)
| Title |
|---|
| 侯勇，林建平，罗仁平，邹洋: "几何因素对轿车外覆盖件面畸变的影响", 同济大学学报(自然科学版), vol. 46, no. 04, 14 May 2018 (2018-05-14), pages 512 - 517 * |
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