Fender flanging device, flanging method and fender machining method
By integrating the fendering of the hood side and the front bumper side into a single process during fender processing, the problem of uneven fendering and scrapped parts caused by positioning accuracy errors in the process parts has been solved, thereby improving part quality and mold debugging efficiency.
Patent Information
- Application Number
- CN202511839898.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-01-23
AI Technical Summary
In the existing fender processing technology, problems such as uneven flanging, uneven flanging surfaces, and scrapped parts are caused by errors in the positioning accuracy of the process parts. In particular, when the flanging of the hood side and the front bumper side are carried out in separate steps, it is difficult to achieve precise fitting, which affects the quality of the parts.
A fender flanging device is adopted, in which the hood side flanging mold and the front bumper side flanging mold work together in the same process. By using the movement of the upper mold and the drive of the drive component, in conjunction with the guide component and the guide slope, the stamping forming of the hood side and the front bumper side flanging is realized and completed in one process.
It effectively reduces the problems of uneven flanging and scrapped parts caused by the accumulation of errors between multiple processes, improves the stability of part quality and the convenience of mold debugging, and ensures the dimensional and shape accuracy of flanging.
Smart Images
Figure CN121373141A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of fender processing, and particularly relates to a fender flanging device, a flanging method and a fender processing method. BACKGROUND
[0002] In the stamping forming process of an automobile covering part, different process routes and die structures have a greater influence on the quality of the part. As an important appearance component of the front face of a passenger vehicle, the quality requirement of a fender is higher and higher. Since the fender part is relatively complex, the process arrangement is generally performed in four sequences.
[0003] The existing processing mode generally places the front cover side flanging and the hood side flanging in two steps (places the front cover side flanging in the third process and places the hood side flanging in the fourth process). Due to the existence of process part positioning accuracy error, the profile of the movable lower die in the fourth process is difficult to completely match the flanging profile in the third process, which leads to the situation that the flanging surface even produces a part scrap. SUMMARY
[0004] To solve the above technical problems, the application discloses a fender flanging device, a flanging method and a fender processing method.
[0005] The technical scheme adopted to achieve the purpose of the application is as follows. a lower die; an upper die, which moves relative to the lower die to approach or move away from the lower die, and is provided with a guide piece; a hood side flanging die, which is slidably connected with the lower die along a first direction; a driving piece, which drives the hood side flanging die to move along the first direction, so as to switch the hood side flanging die between an initial position and a working position; a front cover side flanging die, which is slidably connected with the hood side flanging die along a second direction, and is provided with a guide inclined surface, and the second direction is arranged at an angle with the first direction; Wherein, the hood side flanging die is driven by the driving piece to move to the working position, the upper die moves towards the lower die, the hood side flanging die cooperates with the upper die to stamp a hood side flanging of a fender blank, and the guide piece acts on the guide inclined surface, so as to drive the front cover side flanging die to move along the second direction, the front cover side flanging die cooperates with the upper die to stamp a front cover side flanging of the fender blank, and the front cover side flanging is arranged at an angle with the hood side flanging.
[0006] According to an embodiment of the present application, the side flanging die of the fender is provided with a fender side flanging surface which is in conformity with at least part of the design form of the fender side flange; the side flanging die of the front cover is provided with a front cover side flanging surface which is in conformity with at least part of the design form of the front cover side flange.
[0007] According to an embodiment of the present application, the fender side flanging surface is in conformity with a first part of the design form of the fender side flange; the side flanging die of the front cover is further provided with a first flanging surface which is in conformity with a second part of the design form of the fender side flange.
[0008] According to an embodiment of the present application, the second part is closer to the front cover side flange than the first part, and the area of the second part is smaller than that of the first part.
[0009] According to an embodiment of the present application, the lower die is provided with a profiling support, the outer surface of the profiling support, the fender side flanging surface and the first flanging surface jointly define the inner contour of the fender blank.
[0010] According to an embodiment of the present application, the fender side flanging die comprises a first sliding seat and a fender side flanging member, the first sliding seat is slidingly connected with the lower die along the first direction, and the fender side flanging member is arranged on the first sliding seat.
[0011] According to an embodiment of the present application, the front cover side flanging die comprises a second sliding seat and a front cover side flanging member, the second sliding seat is slidingly connected with the fender side flanging die along the second direction, the guide slope is arranged on the second sliding seat, and the front cover side flanging member is arranged on the second sliding seat.
[0012] According to an embodiment of the present application, further comprising an elastic member, two ends of the elastic member are respectively arranged on the fender side flanging die and the front cover side flanging die, and the elastic member is used to drive the front cover side flanging die to reset.
[0013] The technical scheme adopted for realizing the purpose of the present application is that, in the second aspect of the present application, the present application further discloses a fender flanging method based on the fender flanging device of the first aspect, comprising the following steps: controlling the driving member to drive the hood side flanging die to drive the front cover side flanging die to move from the initial position to the working position; controlling the upper die to move towards the lower die, so that the hood side flanging die cooperates with the upper die to stamp the hood side flanging of the fender blank; and the guide member acts on the guide slope to drive the front cover side flanging die to move in the second direction, the front cover side flanging die cooperates with the upper die to stamp the front cover side flanging of the fender blank; controlling the upper die to move away from the lower die, the front cover side flanging die moves in the direction opposite to the second direction, the driving member drives the hood side flanging die to move from the working position to the initial position; and the processed fender is taken out.
[0014] The technical scheme adopted for realizing the purpose of the present application is that, in the third aspect of the present application, the present application further discloses a fender processing method, comprising the following steps: S1: drawing the blank to obtain a fender blank; S2: trimming, punching and wedge trimming are performed on the fender blank; S3: the fender blank is flanged by the fender flanging method of the second aspect to obtain the front cover side flanging and the hood side flanging; S4: wedge flanging, punching and wedge punching are performed on the fender blank, and the fender processing is completed.
[0015] According to the above technical scheme, the fender flanging device disclosed by the present application comprises a lower die, an upper die, a hood side flanging die, a driving member and a front cover side flanging die. The upper die moves relative to the lower die to approach or move away from the lower die, and the guide member is arranged on the upper die. The hood side flanging die is slidably connected with the lower die in the first direction. The driving member drives the hood side flanging die to move in the first direction, so that the hood side flanging die switches between the initial position and the working position. The front cover side flanging die is slidably connected with the hood side flanging die in the second direction, the front cover side flanging die is provided with a guide slope, and the second direction is arranged at an angle to the first direction. The hood side flanging die moves to the working position under the driving of the driving member, the upper die moves towards the lower die, the hood side flanging die cooperates with the upper die to stamp the hood side flanging of the fender blank, and the guide member acts on the guide slope to drive the front cover side flanging die to move in the second direction, the front cover side flanging die cooperates with the upper die to stamp the front cover side flanging of the fender blank, and the front cover side flanging is arranged at an angle to the hood side flanging.
[0016] The fender flanging device disclosed in the application completes the stamping forming of the fender cover side flanging and the front cover side flanging in the same process by using the movement of the upper die and the driving of the fender cover side flanging die by the driving member, cooperating with the action of the guide member and the guide slope. The fender cover side flanging and the front cover side flanging are completed in one process, avoiding the error accumulation caused by the part transmission and positioning between multiple processes, effectively reducing the probability of problems such as flanging disorder, uneven flanging surface and part scrap caused by the positioning precision error of the process parts, and improving the stability of the part quality. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to make the skilled person in the technical field to which the present application belongs more clearly understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.
[0018] Figure 1 Fig. 1 is a schematic view of the fender flanging device hidden right upper die in one or more embodiments of the present application; Figure 2 Fig. 2 is a schematic view of a fender in one or more embodiments of the present application; Figure 1 Figure 3 Fig. 3 is a schematic view of the cooperation of the fender cover side flanging die and the front cover side flanging die in one or more embodiments of the present application; Figure 1 Figure 4 Fig. 4 is a schematic view of the fender cover side flanging die in one or more embodiments of the present application; Figure 3 Figure 5 Fig. 5 is a top view of the fender cover side flanging die in one or more embodiments of the present application; Figure 4 Figure 6 Fig. 6 is a schematic view of the front cover side flanging die in one or more embodiments of the present application; Figure 3 Figure 7 Fig. 7 is a schematic view of the front cover side flanging member in one or more embodiments of the present application; Figure 3 Figure 8 Fig. 8 is a schematic view of the front cover side flanging die in another view in one or more embodiments of the present application; Figure 3 Figure 9 Fig. 9 is a schematic view of the cooperation of the fender cover side flanging die, the front cover side flanging die and the profiling support member in one or more embodiments of the present application; Figure 1 Figure 10 Fig. 10 is a schematic view of the profiling support member in one or more embodiments of the present application. Figure 9
[0019] Explanation of reference numerals: 100, lower die; 200, upper die; 300, fender blank; 310, hood side flange; 311, first part; 312, second part; 320, front cover side flange; 400, hood side flange die; 410, hood side flange surface; 420, first sliding seat; 430, hood side flange piece; 440, first matching part; 500, front cover side flange; 510, front cover side flange surface; 520, first flange surface; 530, second sliding seat; 531, guide slope; 532, second matching part; 540, front cover side flange piece; 600, elastic piece; 700, profiling support piece; 710, second flange surface; I, first direction; II, second direction. DETAILED DESCRIPTION
[0020] In order to make the skilled in the art to which the present application belongs more clearly understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0021] In addition, reference numbers and / or reference letters can be repeated in different examples in the present application, and such repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art can realize the application of other processes and / or the use of other materials.
[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0023] In the prior art scheme, the process route is: S1: drawing; S2: trimming, punching and wedge trimming; S3: trimming, flanging, wedge flanging and wedge trimming; S4: flanging, punching, wedge punching, wedge shaping.
[0024] In the S3 process, the fender front area and the A column area are turned over, and the turned over transition area is generated on the part cover side profile. When the S3 process piece is placed on the S4 convex die, as the press slide goes down, the fender cover side movable die of the S4 sequence lower die is lifted up. Due to the positioning accuracy error of the process piece, the profile of the S4 movable die is difficult to fit with the turned over profile of the turned over intersection area of the S3 process piece. This leads to the situation that the S3 turned over profile and the S4 turned over profile are not connected after the S4 turned over stamping is completed, that is, the turned over R of the turned over intersection area is not smooth and the turned over surface is not flat. If the S3 process piece has large springback, even the turned over surface edge of the intersection area may interfere with the movable die, thereby causing the turned over surface of the part to be stacked, the nearby A surface to be collapsed, and the turned over quality to be seriously affected, and finally the part to be scrapped. The main reason for the above defects is that the positioning accuracy error of the process piece in the previous sequence causes the fender S3 process piece to be difficult to be positioned to the ideal position on the S4 convex die.
[0025] The fender turning device disclosed in the embodiments of the present application can solve the technical problem of the turned over quality caused by the positioning accuracy error of the process piece in the prior art, thereby improving the stability of the part quality and the convenience of the mold debugging.
[0026] The technical solutions of the present application will be described in detail below through specific embodiments, and in combination with the drawings which are not necessarily drawn to scale. Similar or identical reference numerals can be used to designate the same or similar parts in different drawings. The use of similar or identical reference numerals in different drawings does not mean that all drawings including the similar or identical reference numerals constitute a single or same embodiment. The drawings generally illustrate the various embodiments discussed in the present application in an exemplary and non-limiting manner.
[0027] Reference is made to Figure 1 , Figure 2 , Figure 3 and Figure 8In a first aspect embodiment of this application, a fender flanging device is disclosed, comprising a lower mold 100, an upper mold 200, a hood-side flanging mold 400, a driving member, and a front bumper-side flanging mold 500. The upper mold 200 moves relative to the lower mold 100 to approach or move away from the lower mold 100; a guide member is provided on the upper mold 200. The hood-side flanging mold 400 is slidably connected to the lower mold 100 along a first direction I. The driving member drives the hood-side flanging mold 400 to move along the first direction I, thereby switching the hood-side flanging mold 400 between an initial position and a working position. The front bumper-side flanging mold 500 is slidably connected to the hood-side flanging mold 400 along a second direction II, and the front bumper-side flanging mold 500 is provided with a guide slope 531; the second direction II is angled to the first direction I. Driven by the driving component, the hood side flanging die 400 moves to the working position, the upper die 200 moves toward the lower die 100, the hood side flanging die 400 and the upper die 200 cooperate to stamp and form the hood side flanging 310 of the fender blank 300, and the guide component acts on the guide slope 531, thereby driving the front bumper side flanging die 500 to move along the second direction II, the front bumper side flanging die 500 and the upper die 200 cooperate to stamp and form the front bumper side flanging 320 of the fender blank 300, the front bumper side flanging 320 and the hood side flanging 310 are set at an angle.
[0028] In traditional processes, the hood side flanging 310 and the front bumper side flanging 320 of the fender need to be performed in separate steps, using different molds and equipment. The fender flanging device disclosed in this embodiment, by setting up a hood side flanging mold 400 and a front bumper side flanging mold 500, completes the stamping forming of the hood side flanging mold 400 and the front bumper side flanging 320 in the same process, utilizing the movement of the upper mold 200 and the driving component to drive the hood side flanging mold 400, in conjunction with the action of the guide component and the guide slope 531. Integrating the fender front bumper side flanging and the hood side flanging into a single process avoids the accumulation of errors caused by the transfer and positioning of parts between multiple processes, effectively reducing the probability of problems such as uneven flanging, uneven flanging surfaces, and part scrap caused by errors in the positioning accuracy of process parts, and improving the stability of part quality.
[0029] See Figure 4 and Figure 6 In one embodiment, the hood side flange mold 400 is provided with a hood side flange surface 410, and the hood side flange surface 410 at least partially matches the design shape of the hood side flange 310. The front bumper side flange mold 500 is provided with a front bumper side flange surface 320, and the front bumper side flange surface 320 at least partially matches the design shape of the front bumper side flange 320.
[0030] During the stamping process, these specific surfaces of the die can directly apply precise pressure and shape guidance to the fender blank 300. This allows the hood side flange 310 and the front fender side flange 320 to be accurately formed according to design requirements, greatly reducing the forming errors caused by the mismatch of the die shape, and ensuring the dimensional accuracy and shape accuracy of the flange.
[0031] The upper die 200 acts on the outer surface of the fender blank 300. When the upper die 200 is pressed down, the upper die 200 applies pressure to the fender blank 300, so that the inner surface of the fender blank 300 abuts against the hood side flange surface 410 and the front fender side flange 320 surface, thereby completing the hood side flange 310 and the front fender side flange 320 of the fender blank 300.
[0032] In one embodiment, the hood side flange surface 410 is consistent with the first part 311 of the design form of the hood side flange 310. The front fender side flange die 500 is also provided with a first flange surface 520, which is consistent with the second part 312 of the design form of the hood side flange 310.
[0033] The design form of the hood side flange 310 is usually complex, and it is divided into the first part 311 and the second part 312, which are formed by the hood side flange surface 410 and the third flange surface, respectively. This can more meticulously and accurately control the shape and size of each part of the hood side flange 310. Each flange surface applies precise pressure and guidance to different parts of the design form, so that the entire hood side flange 310 can be formed strictly according to the design requirements, greatly improving the forming accuracy of the hood side flange 310 and reducing errors caused by the mismatch of the die shape.
[0034] The fender blank 300 forms an angle at the hood side flange 310 and the front fender side flange 320. The second part 312 of the design form of the hood side flange 310 is arranged on the front fender side flange die 500, so that the front fender side flange die 500 can independently complete the flanging operation of the angle. This can avoid interference and extrusion at the angle due to the presence of multiple interrelated structures, effectively prevent deformation or distortion at the angle, improve the flanging quality at the angle of the fender, and make the appearance of the product more beautiful.
[0035] In one embodiment, the second part 312 is closer to the front fender side flange 320 than the first part 311, and the area of the second part 312 is smaller than the area of the first part 311.
[0036] The second part 312 closer to the front bumper side flange 320 can better connect with the front bumper side flange 320 during forming. The cooperation of the third flange surface and the front bumper side flange die 500 can make the transition between the second part 312 and the front bumper side flange 320 natural and smooth, reduce the gap or misalignment between the two, and improve the assembly accuracy and overall coordination of the fender and other components such as the front bumper.
[0037] During stamping, the material will flow according to the shape of the die and the pressure distribution. The second part 312 is small in area and close to the front bumper side flange 320, and the third flange surface can guide the material to flow orderly in this area, avoiding local accumulation or excessive stretching of the material. At the same time, in cooperation with the hood side flange surface 410, the material can be uniformly distributed in the entire hood side flange 310 area, reducing defects such as wrinkles and cracks caused by uneven material flow.
[0038] Referring to Figure 2 , Figure 6 , Figure 9 and Figure 10 , in an embodiment, the lower die 100 is provided with a profiling support 700, the outer surface of the profiling support 700, the hood side flange surface 410 and the first flange surface 520 together define the inner contour of the fender blank 300.
[0039] The outer surface of the profiling support 700 is designed according to the shape of the inner contour of the fender blank 300, and cooperates with the hood side flange surface 410 and the third flange surface to accurately position and support the fender blank 300 from multiple directions. During stamping, the material is strictly limited in the space defined by the three surfaces and deformed according to the predetermined shape, thereby ensuring that the inner contour of the fender blank 300 can be accurately formed.
[0040] This multi-surface defining method can accurately control each part of the inner contour of the fender blank 300. Whether it is a straight line, a curve or a complex transition area, the size accuracy can be ensured to meet the design requirements under the cooperation of the profiling support 700, the hood side flange surface 410 and the third flange surface. For example, at some key assembly parts, accurate inner contour dimensions can ensure the assembly accuracy of the fender with other components such as the hood, the front bumper, etc.
[0041] The profiling support 700 can provide stable support for the fender blank 300 and prevent the material from being excessively deformed or collapsed due to excessive pressure during stamping. Especially in some thin-walled or complex-shaped parts, the presence of the profiling support 700 can enhance the stiffness and strength of the material.
[0042] In one embodiment, the second flanging surface 710 is arranged on the profiling support 700, and cooperates with the front side flanging 320 to match the design of the front side flanging 320.
[0043] In a conventional design, the front side flanging die 500 may need a large volume to fully realize the forming function of the front side flanging 320. By arranging the second flanging surface 710 on the profiling support 700, part of the function that may have been concentrated in a large front side flanging die 500 is dispersed to the profiling support 700, making the function distribution of each part of the die more reasonable, optimizing the overall structural layout, and avoiding the situation that the die is too large or complex in some parts.
[0044] The smaller volume of the front side flanging die 500 means that its shape and structure are relatively simple, and the factors that need to be considered and the challenges that need to be faced during the design process are reduced. The smaller front side flanging die 500 is more flexible in motion control. In an automated production line, smaller dies are easier to drive and position accurately, and can respond faster to control system instructions to achieve accurate movements, flips, and other actions.
[0045] Smaller dies are easier to install and debug. Workers can more easily perform die handling, positioning, and fixing operations, reducing installation time and labor intensity. At the same time, during the debugging process, since the die structure is relatively simple, it is also easier to find and solve possible problems, shorten the debugging cycle, and improve production preparation efficiency.
[0046] Referring to Figure 3 , Figure 4 and Figure 5 , in one embodiment, the hood side flanging die 400 includes a first sliding seat 420 and a hood side flanging 310 piece. The first sliding seat 420 is slidably connected to the lower die 100 along the first direction I, and the hood side flanging 310 piece is arranged on the first sliding seat 420.
[0047] In the hood side flanging die 400, the hood side flanging 310 piece directly in contact with the fender blank 300 needs to have high precision to ensure the quality and precision of the flanging forming, and its processing technology is complex, and the material selection is also more strict, so the production cost is higher. The first sliding seat 420, which does not contact the blank, has relatively low precision requirements and lower processing costs.
[0048] If the overall design is adopted, in order to meet the high precision requirement of the part in contact with the blank, the whole mold may need to be machined with high precision and high cost materials, which will cause the waste of materials and processing cost of the part not in contact with the blank. The split design can select appropriate materials and machining accuracy according to the actual needs of each part, avoiding unnecessary material and cost investment. Through this structure design, the first sliding seat 420 with low precision and low cost occupies more volume, and the machine cover side flange 310 with high precision and high cost occupies less volume, which effectively reduces the overall manufacturing cost of the machine cover side flange mold 400 under the premise of ensuring the function and quality of the mold.
[0049] Referring to Figure 3 , Figure 6 , Figure 7 and Figure 8 , in one embodiment, the front cover side flange mold 500 includes a second sliding seat 530 and a front cover side flange 320. The second sliding seat 530 is connected with the machine cover side flange mold 400 in the second direction II, and a guide slope 531 is arranged on the second sliding seat 530, and the front cover side flange 320 is installed on the second sliding seat 530.
[0050] Since the front cover side flange 320 directly in contact with the wing plate blank 300 has high precision requirement, complex processing technology and high material cost; while the second sliding seat 530 not in contact with the blank has low precision requirement and low processing cost. Through this split design, the second sliding seat 530 with low precision and low cost occupies more volume, and the front cover side flange 320 with high precision and high cost occupies less volume, which effectively reduces the overall manufacturing cost of the front cover side flange mold 500 under the premise of ensuring the function and quality of the mold.
[0051] Referring to Figure 4 and Figure 6 , in one embodiment, the machine cover side flange mold 400 is provided with a first matching part 440, and the front cover side flange mold 500 is provided with a second matching part 532 for matching with the first matching part 440. The lower mold 100 is also provided with a first matching part 440, and the bottom of the machine cover side flange mold 400 is provided with a second matching part 532. The second matching part 532 matches with the first matching part 440 to make the front cover side flange mold 500 connected with the machine cover side flange mold 400 in the second direction II.
[0052] The first matching part 440 and the second matching part 532 match with each other to provide accurate guidance for the movement of the front cover side flange mold 500 relative to the machine cover side flange mold 400. This guiding action can ensure that the front cover side flange mold 500 slides in the second direction II according to the predetermined trajectory, avoiding deviation or shaking, thereby ensuring that the front cover side flange 320 can accurately act on the material during the forming process, improving the dimensional accuracy and shape accuracy of the front cover side flange 320.
[0053] In one embodiment, one of the first fitting part 440 and the second fitting part 532 is a slider, and the other is a guide rail. The cooperation of the slider and the guide rail can provide accurate guidance for the movement of the front cover side flanging die 500 relative to the hood side flanging die 400. The guide rail has a fixed track, and when the slider slides along the guide rail, it can strictly follow the predetermined direction and path, effectively avoiding the front cover side flanging die 500 from deviating, shaking or tilting during the movement.
[0054] Referring to Figure 3 and Figure 6 In one embodiment, the wing flanging device further comprises a resilient member 600, both ends of the resilient member 600 acting on the hood side flanging die 400 and the front cover side flanging die 500 respectively, and the resilient member 600 is used to drive the front cover side flanging die 500 to reset.
[0055] During the flanging process of the wing blank 300, the hood side flanging die 400 and the front cover side flanging die 500 need to cooperate to complete a series of complex forming actions. The presence of the resilient member 600 enables the front cover side flanging die 500 to automatically reset under the action of the elastic force after completing a stamping forming, thereby preparing for the next forming action.
[0056] Since the resilient member 600 can automatically drive the front cover side flanging die 500 to reset without manual operation or additional driving devices, the time interval between each forming is greatly shortened.
[0057] In one embodiment, the driving member is a gas cylinder, and the driving member is installed on the lower die 100, and the gas cylinder is drivingly connected to the hood side flanging die 400.
[0058] The gas cylinder can generate relatively stable and powerful linear motion driving force. During the flanging process of the wing blank 300, the hood side flanging die 400 needs to exert a large pressure on the wing blank 300 to achieve accurate flanging forming. The gas cylinder can ensure that the hood side flanging die 400 has enough power during the stamping process by virtue of the power generated by the compressed air, so that the flanging action can be completed smoothly.
[0059] With the above embodiments, the application has the following advantages: the fender flanging device disclosed by the application integrates the front fender side flanging and the hood side flanging into one process from the perspective of side flanging process integration, avoids error accumulation caused by part transfer and positioning between multiple processes, effectively reduces the probability of problems such as flanging disorder, uneven flanging surface and part scrap caused by positioning precision error of process parts, and improves the stability of part quality. In terms of mold structure, the front fender side flanging die 500 and the hood side flanging die 400 are integrated into one set of mold, and a mold structure in which the larger hood side flanging die 400 bears the smaller front fender side flanging die 500 based on composite motion is innovatively designed. This structure effectively solves the problem of interference between the two movable convex dies moving at a certain angle, ensures the normal operation of the mold, ensures the strength and stability of the mold, can withstand a larger stamping force, improves the convenience of mold debugging, reduces the difficulty and time cost of mold debugging, and improves the production efficiency.
[0060] Based on the same inventive concept, the second aspect embodiment of the application discloses a fender flanging method based on the fender flanging device disclosed in any of the above first aspect embodiments, which comprises the following steps: The control driving member drives the hood side flanging die 400 to move the front fender side flanging die 500 from the initial position to the working position; The upper die 200 is controlled to move towards the lower die 100, so that the hood side flanging die 400 cooperates with the upper die 200 to stamp the hood side flanging 310 of the fender blank 300, and the guide member acts on the guide slope 531 to drive the front fender side flanging die 500 to move in the second direction II, and the front fender side flanging die 500 cooperates with the upper die 200 to stamp the front fender side flanging 320 of the fender blank 300; The upper die 200 is controlled to move away from the lower die 100, and the front fender side flanging die 500 moves in the direction opposite to the second direction II, and the driving member drives the hood side flanging die 400 to move from the working position to the initial position; The processed fender is taken out.
[0061] Specifically, the fender flanging method mainly comprises the following steps: First step: initial positioning of the mold.
[0062] The driving member (such as a pneumatic cylinder) is accurately controlled by the control system to start, and the driving member outputs stable and powerful power to drive the hood side flanging die 400 to move smoothly. Since the hood side flanging die 400 is directly installed on the front fender side flanging die 500, the hood side flanging die 400 will drive the front fender side flanging die 500 to move accurately from the initial position to the pre-set working position during the movement, thereby preparing for the subsequent flanging stamping operation.
[0063] Second step: stamping the fender cap side flanging 320.
[0064] The upper die 200 is controlled to move steadily and stably towards the lower die 100 under the accurate guidance of the guide device. When the upper die 200 gradually approaches the lower die 100, the fender cap side flanging die 400 cooperates with the upper die 200 to apply appropriate pressure to the fender blank 300 placed on the lower die 100, thereby stamping the fender cap side flanging 310 of the fender blank 300 and ensuring that the size and shape of the fender cap side flanging 310 meet the design requirements.
[0065] Meanwhile, the guide on the upper die 200 interacts with the guide slope 531 on the front fender side flanging die 500. As the upper die 200 continues to move downward, the guide slides along the guide slope 531, generating a component force in the second direction II, which drives the front fender side flanging die 500 to move steadily in the pre-set second direction II. The front fender side flanging die 500 cooperates with the upper die 200 during the movement to stamp the corresponding part of the fender blank 300, thereby forming the front fender side flanging 320 of the fender blank 300 and ensuring the forming quality of the front fender side flanging 320.
[0066] Third step: die resetting.
[0067] After the stamping operation is completed, the upper die 200 is controlled to move away from the lower die 100 and gradually return to the initial position. During the upward movement of the upper die 200, the front fender side flanging die 500 is automatically reset in the direction opposite to the second direction II under the elastic restoring force of the elastic member 600 (such as a spring) and returns to the initial state. Subsequently, the driving member is started again to drive the fender cap side flanging die 400 to move steadily from the working position to the initial position according to the pre-set program, so that the entire die system returns to the initial state ready for processing, preparing for the next flanging processing.
[0068] Fourth step: taking out the finished product.
[0069] After the die is completely reset, the operator carefully takes out the processed fender from the lower die 100 and checks the flanging quality of the fender. If the quality is qualified, the fender is subjected to subsequent assembly or storage operations; if quality problems are found, the die or processing parameters can be adjusted and reprocessed.
[0070] The fender flanging method disclosed in the application completes the stamping forming of the fender cover side flange 310 and the front cover side flange 320 in the same process by setting the fender cover side flanging die 400 and the front cover side flanging die 500, using the movement of the upper die 200 and the driving of the driving member to the fender cover side flanging die 400, and cooperating with the guide member and the guide slope 531. The fender cover side flanging and the front cover side flanging are completed in one process, effectively reducing the probability of problems such as flanging disorder, uneven flanging surface and part scrap caused by positioning accuracy error of process parts.
[0071] Based on the same inventive concept, the third aspect embodiment of the application discloses a fender processing method, comprising the following steps: S1: drawing a plate blank to obtain a fender blank 300; S2: trimming, punching and wedge trimming of the fender blank 300; S3: flanging the fender blank 300 by using the fender flanging method disclosed in any one of the second aspect embodiments to obtain the front cover side flange 320 and the fender cover side flange 310; S4: wedge flanging, punching and wedge punching of the fender blank 300, and the fender processing is completed.
[0072] Specifically, the fender processing method comprises the following steps: S1: drawing a plate blank to shape a basic shape.
[0073] First, select a plate blank that meets the quality standards and specification requirements as the raw material. Place the plate blank in a professional drawing equipment, and apply uniform and appropriate drawing force to the plate blank by precisely controlling the movement and pressure parameters of the drawing die. During the drawing process, the plate blank gradually undergoes plastic deformation and is stretched and formed according to the predetermined shape and size, finally obtaining the fender blank 300. This step lays the foundation for subsequent processing, ensuring that the fender blank 300 has a rough outline.
[0074] S2: fine trimming to perfect the preliminary shape.
[0075] The fender blank 300 obtained by drawing is subjected to careful trimming, punching and wedge trimming operations. Use high-precision trimming dies to cut off the excess material at the edges of the fender blank 300, making the edges neat and smooth, and meeting the design requirements for size and shape. At the same time, use a punching device to punch the required holes at the specified positions of the fender blank 300, ensuring the position accuracy and size accuracy of the holes. In addition, for some special parts, a wedge trimming process is used, which uses a wedge mechanism to trim the fender blank 300 obliquely, further optimizing its shape and structure, and improving the quality and accuracy of the blank.
[0076] S3: Precise flanging, shaping key structures.
[0077] The fender blank 300 is subjected to the flanging method disclosed in any of the embodiments of the second aspect. The fender blank 300 is accurately placed on the lower die 100 of the fender flanging device. The control system controls the driving member (such as a pneumatic cylinder) to drive the hood side flanging die 400 to move the front cover side flanging die 500 from the initial position to the working position. Then, the upper die 200 is controlled to move towards the lower die 100. The hood side flanging die 400 closely cooperates with the upper die 200 to apply appropriate pressure to the hood side of the fender blank 300, and stamp the hood side flange 310. At the same time, the guide on the upper die 200 acts on the guide slope 531 on the front cover side flanging die 500 to drive the front cover side flanging die 500 to move in the preset second direction II. The front cover side flanging die 500 cooperates with the upper die 200 to stamp the front cover side flange 320. After stamping, the upper die 200 is controlled to move upwards, the front cover side flanging die 500 is reset under the action of the elastic member 600, and the driving member drives the hood side flanging die 400 to return to the initial position. Through this series of precise operations, the front cover side flange 320 and the hood side flange 310, two key structures, are successfully shaped on the fender blank 300, improving the overall performance and appearance quality of the fender.
[0078] S4: Final processing, achieving perfect finished products.
[0079] The fender blank 300 after the flanging operation is subjected to the final processing of wedge flanging, punching, and wedge punching. The wedge flanging die is used to perform wedge flanging on specific parts of the fender blank 300, further optimizing its shape and structure to make it more in line with design requirements. At the same time, the punching equipment is used again to perform punching operations at the required positions, ensuring the accuracy and quality of the holes. For some parts that are difficult to punch directly, the wedge punching process is adopted, which realizes oblique punching through the action of the wedge mechanism, ensuring the integrity and accuracy of all holes on the fender. After this series of final processing steps, the fender blank 300 is finally processed into a finished fender that meets the quality standards and design requirements, completing the entire processing flow.
[0080] The fender processing method disclosed in the present application integrates the front cover side flanging and the hood side flanging into one process, avoiding the accumulation of errors caused by part transfer and positioning between multiple processes, effectively reducing the probability of problems such as flanging disorder, uneven flanging surface, and part scrap caused by positioning accuracy errors of process parts, and improving the stability of part quality.
[0081] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described above with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0082] Therefore, the above detailed description of the embodiments of the present application disclosed in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of protection of the present application.
[0083] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0084] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, cannot be understood as a limitation on the present application.
[0085] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0086] In the present application, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include 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 through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0087] While the preferred embodiments of the application have been described, additional variations and modifications can be made to these embodiments by those of ordinary skill in the art once they have the benefit of the foregoing description. Therefore, the appended claims are intended to encompass within their scope all such variations and modifications as are within the scope of the application. 251
[0088] It is apparent that those having ordinary skill in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. Therefore, if these modifications and variations of the application fall within the scope of the claims and their equivalents, it is intended that the application encompass such modifications and variations.
Claims
1. A fender flange device, characterized in that, include: Lower mold; The upper mold moves relative to the lower mold to move closer to or further away from the lower mold; the upper mold is provided with a guide. The side-flipping mold of the machine cover is slidably connected to the lower mold along the first direction; A driving component drives the hood side flanging mold to move along the first direction, so that the hood side flanging mold switches between an initial position and a working position; The front bumper side flange mold is slidably connected to the hood side flange mold along the second direction. The front bumper side flange mold is provided with a guide slope. The second direction is set at an angle to the first direction. In this process, the hood side flanging die moves to the working position under the drive of the driving component, the upper die moves toward the lower die, the hood side flanging die cooperates with the upper die to stamp and form the hood side flanging of the fender blank, and the guide component acts on the guide slope to drive the front bumper side flanging die to move along the second direction, the front bumper side flanging die cooperates with the upper die to stamp and form the front bumper side flanging of the fender blank, and the front bumper side flanging is set at an angle to the hood side flanging.
2. The fender flanging device according to claim 1, characterized in that, The hood side flange mold is provided with a hood side flange surface, and the hood side flange surface at least partially matches the design shape of the hood side flange. The front bumper side flange mold is provided with a front bumper side flange surface, and the front bumper side flange surface at least partially matches the design shape of the front bumper side flange.
3. The fender flanging device according to claim 2, characterized in that, The side flange of the hood matches the first part of the design shape of the side flange of the hood; The front bumper side flange mold is also provided with a first flange surface, which matches the second part of the design shape of the hood side flange.
4. The fender flanging device according to claim 3, characterized in that, The second part is closer to the front bumper side flange than the first part, and the area of the second part is smaller than the area of the first part.
5. The fender flanging device according to claim 3, characterized in that, The lower mold is provided with a contouring support, and the outer surface of the contouring support, the side flange of the hood, and the first flange jointly define the inner contour of the fender blank.
6. The fender flanging device according to any one of claims 1 to 5, characterized in that, The cover side flanging mold includes a first sliding seat and a cover side flanging component. The first sliding seat is slidably connected to the lower mold along the first direction, and the cover side flanging component is disposed on the first sliding seat.
7. The fender flanging device according to any one of claims 1 to 5, characterized in that, The front bumper side flanging mold includes a second sliding seat and a front bumper side flanging component. The second sliding seat is slidably connected to the hood side flanging mold along the second direction, and the guide slope is disposed on the second sliding seat. The front bumper side flanging component is installed on the second sliding seat.
8. The fender flanging device according to any one of claims 1 to 5, characterized in that, It also includes an elastic element, the two ends of which act on the hood side flange mold and the front bumper side flange mold respectively, and the elastic element is used to drive the front bumper side flange mold to reset.
9. A fender fendering method based on the fender fendering device according to any one of claims 1 to 8, characterized in that, Includes the following steps: The control drive unit drives the hood side flanging mold, which in turn moves the front bumper side flanging mold from the initial position to the working position; The upper die is controlled to move toward the lower die so that the hood side flanging die cooperates with the upper die to stamp and form the hood side flanging of the fender blank; and the guide acts on the guide ramp to drive the front bumper side flanging die to move along the second direction, the front bumper side flanging die cooperates with the upper die to stamp and form the front bumper side flanging of the fender blank; The upper mold is controlled to move away from the lower mold, the front guard side flanging mold moves in the opposite direction to the second direction, and the driving component drives the hood side flanging mold to move from the working position to the initial position. Remove the finished fender.
10. A method for processing a fender, characterized in that, Includes the following steps: S1: The slab is drawn to obtain the fender blank; S2: Trim, punch, and wedge trim the fender blank; S3: The fender blank is flanged using the fender flanging method as described in claim 9 to obtain the front bumper side flanging and the hood side flanging. S4: Perform wedge flanging, punching, and wedge punching on the fender blank to complete the fender processing.