CN113843368A - Rear fender production line of high-end motorcycle and machining process thereof - Google Patents
Rear fender production line of high-end motorcycle and machining process thereof Download PDFInfo
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- CN113843368A CN113843368A CN202111236250.1A CN202111236250A CN113843368A CN 113843368 A CN113843368 A CN 113843368A CN 202111236250 A CN202111236250 A CN 202111236250A CN 113843368 A CN113843368 A CN 113843368A
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- die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/86—Making other particular articles other parts for bicycles or motorcycles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/06—Removing local distortions
- B21D1/10—Removing local distortions of specific articles made from sheet metal, e.g. mudguards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/12—Straightening vehicle body parts or bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
The invention provides a rear fender production line of a high-end motorcycle and a processing technology thereof, wherein the production line comprises the following steps: the drawing die is used for drawing and molding the material; the trimming die is used for trimming the redundant rim charge of the drawn and molded intermediate product; the flanging die is used for flanging and forming the drawn and formed intermediate product; the shaping die is used for shaping the convex part on the drawn and molded intermediate product; the situation that the rear mudguard is easy to crack after being drawn and formed in the prior art is improved. The middle bulge is shaped by adopting a shaping process, the performance and the structure of the bulge are ensured under the condition that the commodity attribute of the appearance surface is not influenced, the shaped bulge has a small R angle, the material is not easy to flow, and the product is not easy to crack.
Description
Technical Field
The invention relates to the field of motorcycle rear mudguard processing equipment, in particular to a rear mudguard production line of a high-end motorcycle and a processing technology thereof.
Background
When the rear mudguard used in the high-end motorcycle is manufactured, a production line is formed by a plurality of dies, as shown in fig. 1, a product forming process of the rear mudguard is gradually formed by a steel plate rolling die, a drawing die, a trimming die, a flanging die and the like through the plurality of dies, and corresponding forming processing is carried out at different stations; in the existing production line, a material plate firstly enters a drawing die to be drawn and molded to form an intermediate product, then trimming is carried out on redundant materials at the edge through a flanging die, and then the product is directly obtained; however, the product structure has a convex part structure at a high point, and because the convex part is higher in position, and the shape of the upper surface of the convex part and a plurality of corners (the R angle is about 0.5mm) is sharp and complicated, the material fluidity is poor in the forming process, the conditions of cracking and wrinkling are easily caused after drawing and forming, and the function and the appearance commodity of the product are influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a rear fender production line of a high-end motorcycle, which solves the problem that the rear fender in the prior art is easy to crack and wrinkle after being drawn and formed.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rear fender production line of a high-end motorcycle comprises:
the drawing die is used for drawing and molding the material;
the trimming die is used for trimming the redundant rim charge of the drawn and molded intermediate product;
the flanging die is used for flanging and forming the drawn and formed intermediate product;
the device also comprises a shaping die which is used for shaping the convex part on the drawn and molded intermediate product.
Preferably, the shaping die comprises an upper die and a lower die which are matched with each other, and the upper die and the lower die are matched and then used for positioning a stretched and formed intermediate product;
the upper die is provided with a shaping concave die core for positioning the convex part of the intermediate product;
the lower die is provided with a shaping convex die core for extruding the convex part of the intermediate product;
the shaping concave die core and the shaping convex die core are matched to form a shaping die cavity.
Preferably, the upper die comprises an upper die base and an upper die core arranged on the upper die base;
the upper die holder is also provided with at least two upper nitrogen springs which are symmetrically arranged and used for pushing the upper die core to longitudinally slide;
the upper die base is also provided with an upper limiting slide block for limiting the upper die core to slide;
the shaping concave die core is arranged on the upper die base, and an upper sliding groove for penetrating through the shaping concave die core is formed in the upper die core.
Preferably, the lower die comprises a lower die base and a lower die core arranged on the lower die base;
the lower die base is provided with at least two lower nitrogen springs which are symmetrically arranged and used for pushing the lower die core to longitudinally slide;
the lower die base is also provided with a lower limiting slide block for limiting the lower die core to slide;
the shaping convex die core is arranged on the lower die base, and the lower die core is provided with a lower sliding groove used for penetrating through the shaping convex die core.
Preferably, the lower die base is provided with positioning seats which are symmetrically arranged and guide rods which are arranged on the positioning seats;
and the upper die base is provided with a guide seat in sliding fit with the guide rod.
Preferably, at least two lower positioning rods which are symmetrically arranged are arranged on the lower die base;
and an upper positioning rod which is abutted against the lower positioning rod for positioning is arranged on the upper die base.
Preferably, the upper die base and the lower die base are respectively provided with two lifting bearing blocks which are symmetrically arranged.
The invention also provides a processing technology of the rear mudguard production line of the high-end motorcycle, which comprises the following steps:
1) rolling steel plates and cutting into filler blocks;
2) drawing;
3) shaping, edge folding, shaping after pressing the fender, pressing and pressing the appearance surface;
4) edge cutting
5) The edges are turned over and shaped,
flanging: turning over two long edge edges; shaping: the whole middle is convex;
6) punching a hole, punching a mounting hole, punching a hole connected with the seat in the forward direction, punching a tail lamp mounting hole and a frame steel pipe connecting hole in an inclined mode.
Preferably, the draw-time equivalance is within 20%.
Compared with the prior art, the invention has the following beneficial effects:
1. the shaping die is added in the process after the drawing forming to shape the convex part on the intermediate product, so that the conditions of deformation and wrinkling caused by direct drawing forming can be effectively solved, the condition of one-time in-place drawing forming can be avoided, and the condition of cracking of the convex part is avoided; after the whole model processing production line is improved, the structural strength and the mechanical property of the protruding part can be ensured.
2. The middle bulge is shaped by adopting a shaping process, the performance and the structure of the bulge are ensured under the condition that the commodity attribute of the appearance surface is not influenced, the shaped bulge has a small R angle, the material is not easy to flow, and the product is not easy to crack.
Drawings
FIG. 1 is a diagram showing a rear fender forming process;
FIG. 2 is a schematic diagram of an exploded structure of a reforming mold;
FIG. 3 is a schematic structural view of a lower mold;
FIG. 4 is a schematic structural view of an upper die;
in the figure, the position of the upper end of the main shaft,
the device comprises an upper die 1, an upper die base 11, an upper die core 12, an upper nitrogen spring 13, an upper limiting slide block 14, an upper sliding groove 15, a lower die 2, a lower die base 21, a lower die core 22, a lower nitrogen spring 23, a lower limiting slide block 24, a lower sliding groove 25, a shaping concave die core 3, a shaping convex die core 4, a positioning seat 5, a guide rod 6, a guide seat 7, a lower positioning rod 8, an upper positioning rod 9 and a hoisting bearing block 10.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
The embodiment of the invention provides a rear fender production line of a high-end motorcycle, which comprises a drawing die, a trimming die, a flanging die and the like, wherein a steel plate rolling die is required to prepare materials before the drawing die is processed, and the materials are conveyed to the drawing die and then drawn and molded to form a preliminary profile of the whole rear fender; then cutting redundant rim charge of the drawn and molded intermediate product through a trimming die, and finally flanging and molding the intermediate product subjected to rim charge cutting through a flanging die so as to finish the whole production process of the rear fender; however, in the current forming process, the forming of the convex part in the rear fender is mainly realized by a drawing die, and as the convex part is higher and the fillet is smaller, the cracking is easy to occur after one-step forming.
Specifically, as shown in fig. 2 to 4, the shaping mold includes an upper mold 1 and a lower mold 2 that are matched with each other, and the intermediate product formed by drawing is positioned after the upper mold 1 and the lower mold 2 are closed, and shaping is mainly performed for the protruding portion, so that the intermediate product needs to be reliably positioned before shaping without damaging a formed structure, and therefore, the intermediate product needs to be attached and positioned by the upper mold 1 and the lower mold 2; the upper die 1 is provided with a shaping concave die core 3 for positioning the bulge of the intermediate product, and the lower die 2 is provided with a shaping convex die core 4 for extruding the bulge of the intermediate product, so that a shaping die cavity is formed by matching the shaping concave die core 3 and the shaping convex die core 4; after the upper die 1 and the lower die 2 are assembled, the bulge is pressed and reshaped by the reshaping concave die core 3 and the reshaping convex die core 4, so that the local reshaping of the bulge can be realized under the condition that the formed part cannot be damaged.
The upper die 1 comprises an upper die holder 11 and an upper die core 12 arranged on the upper die holder 11, wherein the upper die holder 11 is also provided with at least two upper nitrogen springs 13 which are symmetrically arranged and used for pushing the upper die core 12 to longitudinally slide; meanwhile, an upper limiting slide 14 for limiting the upper die core 12 to slide is further arranged on the upper die holder 11; the shaping concave die core 3 is arranged on the upper die base 11, and the upper die core 12 is provided with an upper sliding groove 15 for penetrating through the shaping concave die core 3; the lower die 2 comprises a lower die base 21 and a lower die core 22 arranged on the lower die base 21; at least two lower nitrogen springs 23 which are symmetrically arranged and used for pushing the lower die core 22 to longitudinally slide are arranged on the lower die base 21; meanwhile, a lower limiting slide block 24 for limiting the sliding of the lower die core 22 is also arranged on the lower die base 21; specifically, the shaping convex die core 4 is mounted on the lower die base 21, and the lower die core 22 is provided with a lower sliding groove 25 for penetrating through the shaping convex die core 4; the upper die core 12 and the lower die core 22 are matched with each other to reliably position the intermediate product, and then the shaping concave die core 3 and the shaping convex die core 4 are matched to shape the convex part; after the shaping is finished, the upper die core 12 is pushed to move by the upper nitrogen spring 13, and the lower die core 22 is pushed to move by the lower nitrogen spring 23 so as to realize the demoulding.
In order to realize the process of stable guiding in the process of enabling the upper die base 11 and the lower die base 21 to approach each other, positioning bases 5 which are symmetrically arranged and guide rods 6 which are arranged on the positioning bases 5 are arranged on the lower die base 21; a guide seat 7 which is in sliding fit with the guide rod 6 is arranged on the upper die holder 11; through guide holder 7 and guide bar 6 sliding fit, realize spacing effect of direction at the in-process that goes up mould 1 downstream to can guarantee the accurate compound die process.
Meanwhile, in order to limit the distance of relative movement between the lower die holder 21 and the upper die holder 11, at least two symmetrically arranged lower positioning rods 8 are mounted on the lower die holder 21; the upper die base 11 is provided with an upper positioning rod 9 abutted against the lower positioning rod 8 for positioning, and the upper die base 11 and the lower die base 21 are mutually close to each other and then limit the relative movement position through the upper positioning rod 9 and the lower positioning rod 8, so that the damage of a formed structure caused by excessive acting force is avoided.
Meanwhile, in order to facilitate hoisting the upper die 1 and the lower die 2, the upper die base 11 and the lower die base 21 are respectively provided with two lifting bearing blocks 10 which are symmetrically arranged.
The invention also provides a processing technology of the rear mudguard production line of the high-end motorcycle, which comprises the following steps:
1) rolling steel plates and cutting into filler blocks;
2) drawing;
3) shaping, edge folding, shaping after pressing the fender, pressing and pressing the appearance surface;
4) edge cutting
5) The edges are turned over and shaped,
flanging: turning over two long edge edges; shaping: the whole middle is convex;
6) punching a hole, punching a mounting hole, punching a hole connected with the seat in the forward direction, punching a tail lamp mounting hole and a frame steel pipe connecting hole in an inclined mode.
Preferably, the draw-time equivalance is within 20%. Can not crack or wrinkle.
The middle bulge is shaped by adopting a shaping process, the performance and the structure of the bulge are ensured under the condition that the commodity attribute of the appearance surface is not influenced, the shaped bulge has a small R angle, the material is not easy to flow, and the product is not easy to crack.
The convex part of the drawing and shaping process is designed to have an optimum pre-forming profile by which the material can be guided to the corner regions where the material is not easy to flow. The excessive material flow will cause wrinkling, which affects the appearance and marketability. Too little material flow can crack. Affecting the function of the product. Therefore, the volume of the convex part needs to be accurately calculated according to the principle that the volume is not changed, the preformed molded surface is inversely calculated and designed, in addition, the material flow quantity of the external surface of other areas except the convex part is protected and limited to a certain degree in a pre-pressing mode on other external surfaces, and the influence on the appearance of the product due to the orange peel or ripple effect caused by uneven material flow on the surface of the product is avoided.
In the description of the present invention, it is to be understood that the terms indicating an orientation or positional relationship are based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. A rear fender production line of a high-end motorcycle comprises:
the drawing die is used for drawing and molding the material;
the trimming die is used for trimming the redundant rim charge of the drawn and molded intermediate product;
the flanging die is used for flanging and forming the drawn and formed intermediate product;
it is characterized in that the preparation method is characterized in that,
the device also comprises a shaping die which is used for shaping the convex part on the drawn and molded intermediate product.
2. The rear fender production line of a high-end motorcycle as claimed in claim 1, wherein the shaping mold comprises an upper mold (1) and a lower mold (2) which are matched with each other, and the upper mold (1) and the lower mold (2) position the intermediate product formed by drawing after being closed;
the upper die (1) is provided with a shaping concave die core (3) for positioning the convex part of the intermediate product;
a shaping convex die core (4) for extruding the convex part of the intermediate product is arranged on the lower die (2);
the shaping concave die core (3) and the shaping convex die core (4) are matched to form a shaping die cavity.
3. The rear mudguard production line of a high-end motorcycle according to claim 2, wherein the upper die (1) comprises an upper die holder (11) and an upper die core (12) mounted on the upper die holder (11);
the upper die holder (11) is also provided with at least two upper nitrogen springs (13) which are symmetrically arranged and used for pushing the upper die core (12) to longitudinally slide;
the upper die holder (11) is also provided with an upper limiting slide block (14) for limiting the sliding of the upper die core (12);
the shaping concave die core (3) is arranged on the upper die base (11), and an upper sliding groove (15) used for penetrating through the shaping concave die core (3) is formed in the upper die core (12).
4. The rear mudguard production line of a high-end motorcycle according to claim 3, wherein the lower mold (2) comprises a lower mold base (21) and a lower mold core (22) installed on the lower mold base (21);
the lower die base (21) is provided with at least two lower nitrogen springs (23) which are symmetrically arranged and used for pushing the lower die core (22) to longitudinally slide;
the lower die base (21) is also provided with a lower limiting slide block (24) for limiting the sliding of the lower die core (22);
the shaping convex die core (4) is arranged on the lower die base (21), and the lower die core (22) is provided with a lower sliding groove (25) used for penetrating through the shaping convex die core (4).
5. The rear mudguard production line of a high-end motorcycle according to claim 4, wherein the lower die holder (21) is provided with symmetrically arranged positioning seats (5) and guide rods (6) arranged on the positioning seats (5);
and the upper die holder (11) is provided with a guide seat (7) which is in sliding fit with the guide rod (6).
6. The rear mudguard production line of a high-end motorcycle as claimed in claim 5, wherein at least two symmetrically arranged lower locating rods (8) are mounted on the lower die holder (21);
an upper positioning rod (9) which is abutted against and positioned by the lower positioning rod (8) is arranged on the upper die base (11).
7. The rear mudguard production line of a high-end motorcycle according to claim 5 or 6, wherein the upper die holder (11) and the lower die holder (21) are respectively provided with the lifting bearing blocks (10) which are arranged symmetrically in pairs.
8. The processing technology of the rear mudguard production line of the high-end motorcycle as claimed in any one of claims 1 to 7, wherein: the method comprises the following steps:
1) rolling steel plates and cutting into filler blocks;
2) drawing;
3) shaping, edge folding, shaping after pressing the fender, pressing and pressing the appearance surface;
4) edge cutting
5) The edges are turned over and shaped,
flanging: turning over two long edge edges; shaping: the whole middle is convex;
6) punching a hole, punching a mounting hole, punching a hole connected with the seat in the forward direction, punching a tail lamp mounting hole and a frame steel pipe connecting hole in an inclined mode.
9. The processing technology of the rear mudguard production line of the high-end motorcycle as claimed in claim 8, wherein: the drawing isorate is within 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236250.1A CN113843368A (en) | 2021-10-22 | 2021-10-22 | Rear fender production line of high-end motorcycle and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236250.1A CN113843368A (en) | 2021-10-22 | 2021-10-22 | Rear fender production line of high-end motorcycle and machining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113843368A true CN113843368A (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111236250.1A Pending CN113843368A (en) | 2021-10-22 | 2021-10-22 | Rear fender production line of high-end motorcycle and machining process thereof |
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| Country | Link |
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| CN (1) | CN113843368A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117226001A (en) * | 2023-10-25 | 2023-12-15 | 武汉精力模塑有限公司 | Stamping device for automobile mudguard |
-
2021
- 2021-10-22 CN CN202111236250.1A patent/CN113843368A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117226001A (en) * | 2023-10-25 | 2023-12-15 | 武汉精力模塑有限公司 | Stamping device for automobile mudguard |
| CN117226001B (en) * | 2023-10-25 | 2024-03-12 | 武汉精力模塑有限公司 | Stamping device for automobile mudguard |
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