Fender outer plate and fender outer plate punch forming method
By punching and then flanking in the flange outer plate stamping process, the problems of inconsistent flange angles and complex molds in the "hawk's beak" area are solved, reducing the matching risk of flange outer plates and improving production efficiency and quality.
Patent Information
- Application Number
- CN202510584609.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2025-07-22
AI Technical Summary
The existing wing outer plate 4-process stamping process has problems such as inconsistent flange angles, complex molds, difficult matching and quality risks in the "hawk's beak".
The process of punching in the edge trimming process first, then flipping on the first and second sides respectively, and finally carrying out the angle-covering process to reduce the use of inclined wedges and avoid the "angle-covering + side punching" process in the same process, and the side holes are far away from the end of the "hawk's beak".
The problem of inconsistent flange angle is solved, the number of molds and the matching quality risk of the outer plate of the fender and peripheral parts is reduced, and the production efficiency and product quality are improved.
Smart Images
Figure CN120347137A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vehicles, and particularly to a wing outer panel and a stamping forming method thereof. Background Art
[0002] At the present stage when pursuing the ultimate development cost of automotive parts, each vehicle manufacturer has gradually adopted a 4-process stamping process for the wing outer panel. Regarding the 4-process stamping process of the wing outer panel, it is often restricted in its "eagle beak" area. To solve the limitations of the 4-process stamping process in the "eagle beak" area of the wing outer panel, there are the following two existing solutions:
[0003] The first one: Make the flanging angles of the flanging surfaces on both sides of the end of the "eagle beak" of the wing outer panel the same, and perform the flanging on both sides of the "eagle beak" end in the same process to eliminate the corner wrapping process in the "eagle beak" area of the wing outer panel. At this time, the process route adopted in the "eagle beak" area is: drawing - trimming + side trimming - side flanging - side punching. However, in many cases, the flanging angles of the flanging surfaces on both sides of the end of the "eagle beak" of the wing outer panel cannot be the same. For example, when the styling split of the "eagle beak" of the wing outer panel has an acute angle, the angle of the flanging surface on the "front bumper body matching side" cannot be the same as the angle of the flanging surface on the "hood matching side"; if the flanging angles of the two flanging surfaces are the same according to the normal flanging angle in the vehicle body Z direction, it will cause difficulties in demolding the front bumper body and also affect the installation operation space of the front bumper body fasteners.
[0004] The second one: Make the side holes on the flanging surfaces on both sides of the end of the "eagle beak" of the wing outer panel far away from the end of its "eagle beak", so that while performing the corner wrapping process on the "eagle beak" area in the same process, side punching can also be performed. The side holes being far away from the end of its "eagle beak" can avoid the side punching die being located on the corner wrapping wedge mechanism, resulting in difficult waste discharging; it can also avoid the interference risk between the side punching wedge mechanism and the corner wrapping wedge structure. At this time, the process route adopted in the "eagle beak" area is: drawing - trimming + side trimming - flanging + side flanging - corner wrapping + side punching. However, the side holes being far away from the end of the "eagle beak" will increase the matching difficulty, matching cycle and stability between the wing outer panel and surrounding parts in the later stage, and thus lead to certain quality risks. Summary of the Invention
[0005] In order to solve the above technical problems or at least partially solve the above technical problems, this application provides a wing outer panel and a stamping forming method thereof.
[0006] This application provides a stamping forming method for a wing outer panel, including:
[0007] The first process: drawing;
[0008] Second process: Trimming the first side and the second side of the fender, where the first side and the second side are adjacent to each other, and punching holes on the first side;
[0009] Third process: Flanging the first side and the second side;
[0010] Fourth process: Wrapping the corner at the connection of the first side and the second side.
[0011] In some embodiments, the first process further includes unfolding the first side and the second side onto the process supplementary surface.
[0012] In some embodiments, the first process further includes forming a stepped surface between the process supplementary surface and the fender body through over-drawing process.
[0013] In some embodiments, in the second process, the punching position is not less than 5 mm away from the edge line of the first side.
[0014] In some embodiments, in the third process, flanging is first performed on the first side and then on the second side.
[0015] In some embodiments, the first side is flanged along the Y direction of the vehicle body, and the second side is flanged along the Z direction of the vehicle body.
[0016] In some embodiments, the flanging angles of the first side and the second side are different.
[0017] In some embodiments, the trimming of the first side and the second side in the second process specifically includes:
[0018] Removing the waste material that unfolds the first side and the second side onto the area outside the process supplementary surface.
[0019] In some embodiments, the punching on the first side in the second process further includes:
[0020] Punching holes on the first side to form riveting side holes for riveting cooperation with the fender bracket.
[0021] The second aspect of this application also provides an outer fender, which is formed by stamping using the outer fender stamping method described in any one of the above.
[0022] The technical solutions provided by the embodiments of this application have the following advantages compared with the prior art:
[0023] The stamping forming method of the outer panel of the wing provided by the embodiment of the present application, in the second process, trimming and punching are carried out. The punching is carried out before flanging, and no inclinable wedge is required during the punching process, reducing the number of dies. At the same time, after its third process (flanging the first side and the second side respectively), space can also be vacated to implement the corner wrapping process to solve the problem that the flanging angles of the flanging surfaces on both sides of the "eagle beak" end of the outer panel of the wing are inconsistent. At the same time, the side punching process does not need to be carried out in the subsequent process, avoiding the "corner wrapping + side punching" process in the same process, and keeping the side holes away from the "eagle beak" end of the fender, reducing the quality risk of the matching between the outer panel of the wing and the surrounding parts. Brief Description of the Drawings
[0024] The drawings here are incorporated into the description and form a part of this description, showing the embodiments in line with the present application, and are used together with the description to explain the principles of the present application.
[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative labor.
[0026] Figure 1 It is a flowchart of the stamping forming method of the outer panel of the wing described in the embodiment of the present application;
[0027] Figure 2 It is an axonometric view of the outer panel of the wing described in the embodiment of the present application;
[0028] Figure 3 Figure 2 Partial enlarged view of point A in
[0029] Figure 4 It is a front view of the outer panel of the wing described in the embodiment of the present application;
[0030] Figure 5 For Figure 4 Partial enlarged view of point B in
[0031] Figure 6 It is a left view of the outer panel of the wing described in the embodiment of the present application;
[0032] Figure 7 For Figure 6 Partial enlarged view of point C in
[0033] Figure 8 It is a structural schematic diagram of the outer panel of the wing formed after the first process;
[0034] Figure 9 For Figure 8 Partial enlarged view of point D in
[0035] Figure 10 It is a schematic structural diagram of the outer wing panel formed after the second process;
[0036] Figure 11 It is Figure 10 a partial enlarged view of point E in
[0037] Figure 12 It is a schematic structural diagram of the outer wing panel formed after the third process;
[0038] Figure 13 It is Figure 12 a partial enlarged view of point F in
[0039] Figure 14 It is a schematic structural diagram of the outer wing panel formed after the fourth process;
[0040] Figure 15 It is Figure 14 a partial enlarged view of point G in
[0041] Wherein, 1 is the outer wing panel body; 2 is the process supplementary surface; 11 is the first side edge; 12 is the second side edge; 13 is the fillet; 201 is the stepped surface. Specific embodiments
[0042] In order to more clearly understand the above objects, features and advantages of the present application, the solution of the present application will be further described below. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0043] In the following description, many specific details are set forth in order to fully understand the present application, but the present application can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present application, rather than all the embodiments.
[0044] As Figure 1 shown, the embodiments of the present application provide a method for stamping and forming an outer wing panel, including:
[0045] The first process: drawing; Figure 8 It is a schematic structural diagram of the outer wing panel formed after the first process;
[0046] The second process: trimming the first side edge 11 and the second side edge 12 of the outer wing panel, the first side edge 11 and the second side edge 12 are arranged adjacent to each other, and punching is performed on the first side edge 11; Figure 10 It is a schematic structural diagram of the outer wing panel formed after the second process;
[0047] The third process: flanging the first side edge 11 and the second side edge 12 respectively; Figure 12It is a schematic diagram of the structure of the fender outer panel formed after the third process;
[0048] In the fourth step, the connection between the first side edge 11 and the second side edge 12 is subjected to an angle wrapping process. Figure 14 This is a schematic diagram of the structure of the fender outer panel formed after the fourth process. Figure 15 for Figure 14 A partial enlarged view of point G in the middle.
[0049] Specifically, the first side edge 11 and the second side edge 12 of the fender outer panel are respectively used to match and connect with different positions on the vehicle. For example, the first side edge 11 matches with the front fender body of the vehicle, and the second side edge 12 matches with the hood of the vehicle. The fender outer panel forms a "beak" portion of the fender at the connection between the first side edge 11 and the second side edge 12, that is, a structure with a certain sharp angle. The "beak" portion can be an acute angle, a right angle, or an obtuse angle. In some embodiments of the present application, the angle of the "beak" of the fender outer panel is an acute-angled molding seam. The first side edge 11 and the second side edge 12 need to be flanging at different angles when flanging. Therefore, in the third process, the first side edge 11 and the second side edge 12 are flanging respectively, and the first side edge 11 and the second side edge 12 use different angles of the wedge when flanging, thereby achieving different flanging angles.
[0050] Punching is performed before flanging. When the punching process is implemented, the first side edge 11 and the second side edge 12 have not yet been flipped, so the punching process does not require the use of an inclined wedge, reducing the number and types of molds used in the fender outer panel stamping process. At the same time, after the third process (flanging the first side edge 11 and the second side edge 12 respectively), space can be freed up to implement the corner wrapping process to solve the problem of inconsistent flanging angles of the flanging surfaces on both sides of the "eagle's beak" end of the fender outer panel. At the same time, the subsequent process does not require the side punching process, which can avoid the "corner wrapping + side punching" process in the same process, and keep the side holes away from the "eagle's beak" end of the fender, reducing the quality risk of matching the fender outer panel with surrounding parts.
[0051] In some embodiments of the present application, the first process also includes: unfolding the first side edge 11 and the second side edge 12 onto the process supplementary surface 2. The process supplementary surface 2 is an extended surface formed by the flat plate during the drawing process. The drawing process supplementary surface 2 refers to the additional material added outside the fender outer panel body 1, which is used to improve the drawing forming conditions, ensure uniform material flow, and avoid cracking or wrinkling defects. It usually includes parts such as an extension surface, a pressing surface (drawing surface) and a draft surface. The first side edge 11 and the second side edge 12 are unfolded onto the process supplementary surface 2 to facilitate trimming and punching operations on the first side edge 11 and the second side edge 12.
[0052] Figure 8This is a schematic diagram of the structure of the fender outer panel formed after the first process. Figure 9 As shown, in some embodiments of the present application, the first process also includes forming a step surface 201 between the process supplementary surface 2 and the fender outer panel body 1 through an over-drawing process. The appearance of the fender outer panel body 1 often has a certain curvature, and an unequal height step surface 201 can be formed between the process supplementary surface 2 and the fender outer panel body 1 through an over-drawing process, so that the first side edge 11 and the second side edge 12 are as close to a plane as possible when unfolded onto the process supplementary surface 2, thereby controlling the first side edge 11 and the second side edge 12 to avoid defects such as wrinkling and deformation during subsequent processing.
[0053] Figure 10 The structure diagram of the fender outer panel formed after the second process, in some embodiments of the present application, combined with Figure 11 As shown, in the second process, the distance between the punching position and the edge line of the first side edge 11 is not less than 5 mm, which can better ensure the strength of the punching edge of the mold in this process.
[0054] Figure 12 The structure diagram of the fender outer panel formed after the third process, in some embodiments of the present application, combined with Figure 13 As shown, in the third process, the first side 11 is first flanged, and then the second side 12 is flanged, wherein the first side 11 is flanged along the Y direction of the vehicle body, and the second side 12 is flanged along the Z direction of the vehicle body. After the first side 11 is flanged, it is used to match the front guard body of the vehicle, and after the second side 12 is flanged, it is used to match the hood side of the vehicle. Since the first side 11 is first flanged, and then the second side 12 is flanged, the flange intersection area formed after the two flanges are completed is located on the second flange. Of course, the second side 12 can also be flanged first, and then the first side 11 is flanged. The order of the first side 11 and the second side 12 can be interchanged. In the embodiment of the present application, the first side 11 is first flanged, and then the second side 12 is flanged, in order to comprehensively consider the retreat space of the inclined wedge mechanism used in the second flange and to ensure the strength of the mold insert of the first flange.
[0055] In some embodiments of the present application, the first side edge 11 and the second side edge 12 have different flanging angles, and different flanging molds are used for flanging to form different flanging angles. The flanging angles of the first side edge 11 and the second side edge 12 are related to the fuselage structure matched therewith. In the embodiments of the present application, the tip angle a of the "eagle's beak" end of the fender outer panel is an acute angle, and the flanging angles of the first side edge 11 and the second side edge 12 formed thereby are also different, so two flangings are used to form the flanging of the first side edge 11 and the flanging of the second side edge 12.
[0056] Due to the different flanging angles of the first side 11 and the second side 12, the rounded corners at the "eagle beak" end are continuous with non - single stamping angles, and it is impossible to complete the flanging in one step in the Y - direction or Z - direction of the vehicle body. Therefore, it is necessary to perform corner wrapping on this area in the fourth process. The corner wrapping is carried out on the rounded corner 13 at the "eagle beak" end and part of the flanging surface, and the corner wrapping process is carried out under the action of the corner wrapping process, so that the outer edge of the wing reaches the finished state.
[0057] Specifically, a side flanging operation is performed on the first side 11, and a flanging operation is performed on the second side 12. Flanging refers to a forming method that uses the action of a mold to turn up the plane or curved surface edge of a blank along a closed / non - closed curve to form a straight wall or flange. It is divided into vertical flanging (consistent with the stamping direction), horizontal flanging, and inclined flanging. Vertical flanging is the preferred solution because of its stable forming and convenient positioning. Side flanging specifically refers to a process where the flanging direction has a certain angle (usually not 90°) with the stamping direction. A complex - angle flanging needs to be achieved through a wedge mechanism. For example, 75° side flanging is often used at the corner of the vehicle body side panel.
[0058] In some embodiments of the present application, in the second process, trimming the first side 11 and the second side 12 specifically includes:
[0059] Cutting off the waste material that expands the first side 11 and the second side 12 to the outside of the process - supplementary surface 2.
[0060] Since the flanging angles of the first side 11 and the second side 12 are different in the subsequent processes, trimming and side - trimming processes are respectively carried out for the first side 11 and the second side 12.
[0061] Furthermore, in the second process, punching holes on the first side 11 further includes:
[0062] Punching holes on the first side 11 to form riveting side holes, and the riveting side holes are used for riveting and mating with the fender bracket.
[0063] Specifically, when installing the outer fender, through the riveting side holes, it is riveted with the fender bracket by using fixture positioning, avoiding the deviation in the accuracy of the riveting side holes caused by punching holes first and then flanging, and making the mold manufacturing more convenient.
[0064] The riveting side holes in the embodiments of the present application can also be threaded holes or other forms of functional holes.
[0065] It should be noted that due to various changes in the body shape and structure, the first flanging surface and the second flanging surface of the outer fender in the embodiments of the present application can also be the flanging surfaces on the matching sides of other parts, such as the flanging surface on the "front headlight matching side", etc.; at the same time, this solution is also applicable to sheet - metal parts of other parts with the feature of "different flanging angles on both flanging surfaces", not limited to the outer fender, and can also be used as a process - reference method.
[0066] Combined Figures 2 to 7 As shown, an embodiment of the present application further provides an outer wing panel, which is made by using the stamping forming method in the above embodiment. The outer wing panel includes an outer wing panel body 1 and a first flanging surface and a second flanging surface formed at the edge of the outer wing panel body 1. The first flanging surface is flanged along the Y direction of the vehicle body, and the second flanging surface is flanged along the Z direction of the vehicle body. The first flanging surface is matched with the front bumper body of the vehicle body, and the second flanging surface is matched with the hood side of the vehicle body.
[0067] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.
[0068] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments described herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A stamping forming method for the outer panel of a wing, characterized in that, Including: The first process: drawing; The second process: trimming the first side edge and the second side edge of the fender, the first side edge and the second side edge are arranged adjacent to each other, and punching is performed on the first side edge; The third process: flanging is respectively performed on the first side edge and the second side edge to form a first flanging surface and a second flanging surface; The fourth process: corner wrapping treatment is performed on the connection part of the first flanging surface and the second flanging surface.
2. The method for stamping and forming the outer panel of the wing according to claim 1, characterized in that, The first process further includes: unfolding the first side edge and the second side edge onto the process supplement surface.
3. The method for stamping and forming the outer panel of the wing according to claim 2, characterized in that, The first process further includes forming a stepped surface between the process supplement surface and the fender outer panel body through an over-drawing process.
4. The wing outer panel stamping method according to claim 1, characterized in that, In the second process, the punching position is not less than 5 mm away from the edge line of the first side edge.
5. The stamping method for the outer panel of the wing according to claim 1, characterized in that In the third process, flanging is first performed on the first side edge, and then flanging is performed on the second side edge.
6. The method for stamping and forming the outer panel of the wing according to claim 1, characterized in that, The first side edge is flanged along the Y direction of the vehicle body, and the second side edge is flanged along the Z direction of the vehicle body.
7. The stamping method for the outer panel of the wing according to claim 1, characterized in that The flanging angles of the first side edge and the second side edge are different.
8. The method for stamping and forming the outer panel of the wing according to claim 2, characterized in that In the second process, the specific trimming of the first side edge and the second side edge includes: Cutting off the waste material of the first side edge and the second side edge unfolded outside the process supplement surface.
9. The method for stamping and forming the outer panel of the wing according to claim 1, characterized in that, In the second process, the punching on the first side edge further includes: Punching on the first side edge to form a riveting side hole, and the riveting side hole is used for riveting cooperation with the fender bracket.
10. An outer wing panel, characterized in that, Adopt the fender outer panel stamping forming method according to any one of claims 1-9.