CN113477777B - Oil filler workpiece forming process - Google Patents
Oil filler workpiece forming process Download PDFInfo
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- CN113477777B CN113477777B CN202110774816.XA CN202110774816A CN113477777B CN 113477777 B CN113477777 B CN 113477777B CN 202110774816 A CN202110774816 A CN 202110774816A CN 113477777 B CN113477777 B CN 113477777B
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- workpiece
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/30—Deep-drawing to finish articles formed by deep-drawing
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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
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to the technical field of automobile accessories, and discloses a forming process of an oil filler workpiece, which comprises the following steps: step 1: forming a shallow-modeling workpiece from a flat material through a drawing process; step 2: roughly trimming and stamping the shallow-modeling workpiece to form a rough oil filler workpiece, stamping the middle part of the rough oil filler workpiece with a rough oil filler formed by encircling a rough trimming line, forming a forming corner ring at the outer edge of the rough trimming line, forming a distance L between the rough trimming line and the forming corner ring, arranging a finish trimming line between the rough trimming line and the forming corner ring, and enabling the distance M between the rough trimming line and the finish trimming line to be larger than 0; and step 3: shaping and stamping the workpiece with the coarse oil filling port to form a shaped oil filling port piece; and 4, step 4: and (4) carrying out fine trimming and stamping on the shaping oil filler part to form a fine trimming line, and finishing the forming processing of the oil filler part. The forming process of the oil filling port workpiece prevents the oil filling port workpiece from forming and cracking, improves the positioning precision of the oil filling port workpiece, and reduces the difficulty of debugging, grabbing and holding the material edge in the trimming process.
Description
Technical Field
The invention relates to the technical field of automobile accessories, in particular to a forming process of a workpiece at an oil filling port.
Background
At present, the oil filler hole is the indispensable part of fuel vehicle, and the oil filler hole is in order to satisfy the outward appearance requirement simultaneously, with filler cap cooperation requirement, sealed, some series of requirements such as location lead to the design process to have that the outward appearance fillet is little, the outward appearance corner, Y is big to the degree of depth, characteristics that bottom fillet is unfavorable for stamping forming such as little.
In the stamping process, the traditional process at the oil filling port is as follows: drawing to form the shallow shape of the oil filling port, trimming and shaping in place.
The traditional process has the advantages that the oil filling port is easy to crack during shaping, the oil filling port usually appears at the root of a place with a small appearance fillet, the main expression forms are 2, one crack is parallel to the appearance fillet, the other crack is perpendicular to the appearance fillet, the boundary of the oil filling port is cracked during shaping, so that parts are scrapped, and the rejection rate is 80%;
the precision of the material edge of the oil filling port needs to be ensured through two procedures of trimming and shaping, the errors of the two procedures are accumulated, and the precision of the material edge cannot meet the positioning requirement of the oil filling port. The trimming process material edges are difficult to meet the positioning requirement after being shaped, and the trimming process debugging and material grabbing edge difficulty is increased.
Disclosure of Invention
The purpose of the invention is: the forming process for the oil filling port workpiece is provided, the oil filling port workpiece is prevented from being formed and cracked, the positioning precision of the oil filling port workpiece is improved, and the difficulty of material grabbing and edge debugging in the trimming process is reduced.
In order to achieve the purpose, the invention provides a forming process of a workpiece of an oil filling port, which comprises the following steps of: step 1: forming a shallow-modeling workpiece from a flat material through a drawing process;
step 2: roughly trimming and stamping the shallow-modeling workpiece to form a rough oil filler workpiece, stamping a rough oil filler formed by enclosing a rough trimming line in the middle of the rough oil filler workpiece, forming a forming corner ring at the outer edge of the rough trimming line, forming a distance L between the rough trimming line and the forming corner ring, and arranging a finishing line between the rough trimming line and the forming corner ring, wherein the distance M between the rough trimming line and the finishing line is more than 0;
and step 3: shaping and stamping the workpiece with the coarse oil filling port to form a shaped oil filling port piece;
and 4, step 4: and carrying out fine trimming and stamping on the shaping oil filling port piece to form a fine trimming line, and finishing the forming processing of the oil filling port piece.
Preferably, in step 2, the distance L is 15 to 30 mm.
Preferably, in step 2, the distance L is 20 to 25 mm.
Preferably, in step 2, a corner of the workpiece with the rough oil filling opening is located on the forming corner ring.
Preferably, in the step 4, the finishing press is used to remove the gap M to form the finishing edge line.
Preferably, in the step 2, performing rough trimming and stamping on the shallow-modeling workpiece to form a rough machining of the workpiece with the rough oil filling port in the depth direction;
and in the step 3, the rough oil filler workpiece is subjected to shaping and stamping to finish the machining of the oil filler workpiece in the depth direction.
Preferably, the distance N between the finishing edge line and the forming corner ring is 5 mm-10 mm.
Compared with the prior art, the forming process of the oil filler workpiece has the beneficial effects that: in the forming process of the oil filler workpiece, a material flow rate control ring is formed between the rough trimming line and the forming corner ring, a finishing trimming line is arranged between the rough trimming line and the forming corner ring, the distance a between the rough trimming line and the finishing trimming line is more than 0, the rough trimming stamping in the step 2 does not need to be finished to the finishing trimming line at one time, so that the material flow rate control is carried out through the material flow rate control ring in the stamping and shaping step, a point a, a point b and a point c in the material flow rate control ring flow to a point d at the forming corner of the rough oil filler workpiece, the point a and the point b are respectively positioned at two sides of the point c, if the flow rate of the flow of the point a and the point b to the point d is faster than the flow rate of the flow of the point c to the point d, cracks vertical to the forming corner are formed at the forming corner, the point a and the point b are moved in the material flow rate control ring, the distance between the point a and the point b to the point d is increased to reduce the speed between the point a flowing and the point b to the point d, and reduce the material flow rate difference between the point a and the point b and the point c, and vice versa. Meanwhile, in the oil filler workpiece forming process, the stamping and finishing are carried out after the stamping and shaping in the step 4, the precision of the material edges is only controlled by the step 4, the accumulation of a plurality of process errors does not exist, the positioning precision control is simpler, and the precision control of the material edges is improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a shallow-molded workpiece according to an embodiment of the present invention.
Fig. 2 is a schematic cross-sectional view of a low-profile workpiece according to an embodiment of the invention.
FIG. 3 is a schematic diagram of a exemplary embodiment of a workpiece for a roughing filler neck.
Fig. 4 is an enlarged schematic structural diagram at a in fig. 3 according to an embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a workpiece for an oil filler hole according to an embodiment of the invention.
In the figure:
10. shallow modeling of the workpiece; 11. a fuel filler port workpiece;
20. a workpiece of a coarse oil filling port; 21. roughly trimming edges; 22. a coarse oil filling port; 23. forming a corner ring; 24. trimming the sideline; 25. at the corner.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. used herein are used to indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used broadly, and for example, the terms "connected," "connected," or "fixed" may be fixed, or detachably connected, or integrated; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 to 5, a forming process of a fuel filler workpiece 11 according to a preferred embodiment of the present invention includes the following steps:
as shown in fig. 1 to 2, step 1: forming a shallow modeling workpiece 10 by a drawing process on a flat plate;
as shown in fig. 3 to 4, step 2: roughly trimming and stamping the shallow-modeling workpiece 10 to form a rough oil filler workpiece 20, stamping the middle part of the rough oil filler workpiece 20 with a rough oil filler 22 surrounded by a rough trimming line 21, forming a forming corner ring 23 at the outer edge of the rough trimming line 21, forming a distance L between the rough trimming line 21 and the forming corner ring 23, arranging a finishing trimming line 24 between the rough trimming line 21 and the forming corner ring 23, and enabling the distance M between the rough trimming line 21 and the finishing trimming line 24 to be larger than 0;
and step 3: shaping and stamping the rough oil filler hole workpiece 20 to form a shaped oil filler hole part;
as shown in fig. 5, step 4: and (3) finishing and stamping the shaping oil filler part to form a finished edge line 24, and finishing the forming processing of the oil filler part 11.
Due to the fact that material flowing is involved in the step 3 stamping and shaping process, the oiling workpiece is cracked and scrapped due to the fact that the inflow speed of the material is not uniform. Because the prior art does fine trimming before stamping and shaping, the inflow speed of materials cannot be adjusted in the stamping and shaping step, and no process adjustment room exists. In the forming process of the oil filler hole workpiece 11 of the invention, a material flow rate control ring is formed between a rough trimming line 21 and a forming corner ring 23, a finishing trimming line 24 is arranged between the rough trimming line 21 and the forming corner ring 23, the distance a between the rough trimming line 21 and the finishing trimming line 24 is more than 0, the rough trimming stamping in step 2 does not need to be finished to the finishing trimming line 24 at one time, so that the material flow rate control is carried out by the material flow rate control ring in the stamping and shaping step, points a, b and c in the material flow rate control ring flow to a point d at a forming corner 25 of the rough oil filler hole workpiece 20, the points a and b are respectively positioned at two sides of the point c, if the flow rate of the points a and b flowing to the point d is faster than the flow rate of the points c flowing to the point d, cracks vertical to the forming corner are formed at the forming corner 25, the cracks are formed by moving the points a, b in the material flow rate control ring, the distance between the point a and the point b to the point d is increased to reduce the speed between the point a flowing and the point b to the point d, and reduce the material flow rate difference between the point a and the point b and the point c, and vice versa. Meanwhile, in the forming process of the oil filler workpiece 11, the stamping and finishing are carried out after the stamping and shaping in the step 4, the precision of the material edges is only controlled by the step 4, the accumulation of a plurality of process errors does not exist, the positioning precision control is simpler, and the precision control of the material edges is improved.
As shown in fig. 3 to 4, further, in step 2, the distance L is 15-30 mm. The width of the material flow rate control ring is too small, so that the material flow rate control range is narrowed, and the adjustment of the material flow rate is inconvenient. The width of the material flow rate control ring is too large to facilitate placement of the fat filler neck workpiece 20 during the press truing step.
As shown in fig. 3 to 4, it is preferable that the distance L is 20 to 25mm in step 2, and the width of the material flow rate control ring is set in a suitable range so as to satisfy the material flow rate control requirement and facilitate the process placement in the press-shaping of step 3.
Further, in step 2, as shown in FIG. 3, the corner 25 of the workpiece 20 is located on the contoured corner ring 23. In the stamping forming process, the position of the corner 25 is determined, namely the position of the forming corner ring 23 is fixed, and the distance between the overhaul sideline and the forming corner ring 23 can be changed according to different vehicle models and other conditions, so that the distance of the rough trimming line 21 is determined according to the position of the forming corner ring 23, and the applicability of the workpiece 20 for the oil tank is improved.
As shown in fig. 3 to 5, further, in step 4, the gap M is removed by a finishing press to form a finishing border 24. Because the accumulated error or distance is calculated in the step 1-3, the final trimming line 24 is formed by once removing through the stamping and trimming in the step 4, the precision control is simple, and the positioning accuracy is high.
Further, in step 2, the rough trimming and pressing process is performed on the shallow modeling workpiece 10 to form the rough oiling port workpiece 20, and preliminary machining in the depth direction is performed, so that preparation is made for the overall machining in the depth direction in step 3.
In step 3, the rough oil filler hole workpiece 20 is subjected to shaping and stamping to finish the machining of the oil filler hole workpiece 11 in the depth direction. Through the preliminary processing in the depth direction in step 2 to reduce the deformation of the degree of depth processing in step 3, reduce the deformation degree of difficulty of oil filler hole work piece 11, prevent to produce deformation stress because of single deformation is too big, improve the life of oil filler hole work piece 11.
Further, the distance N between the finishing edge line 24 and the forming corner ring 23 is 5 mm-10 mm. The numerical value of the distance N is too small, the forming corner is easily influenced in the fine trimming stamping in the step 4, the stamping processing difficulty is increased, and the material waste caused by too large distance is avoided.
In summary, in the forming process of the oil filler workpiece 11 of the present invention, a material flow rate control ring is formed between the rough trimming line 21 and the forming corner ring 23, a finishing trimming line 24 is provided between the rough trimming line 21 and the forming corner ring 23, a distance a between the rough trimming line 21 and the finishing trimming line 24 is greater than 0, the rough trimming press in step 2 does not need to be once finished to the finishing trimming line 24, so that in the press shaping step, the material flow rate control is performed by the material flow rate control ring, at the forming corner 25 of the rough oil filler workpiece 20, a point a, a point b, and a point c in the material flow rate control ring flow to a point d, the point a and the point b are respectively located at both sides of the point c, if the flow rate of the point a and the point b to the point d is faster than the flow rate of the point c to the point d, a crack perpendicular to the forming corner is formed at the forming corner 25, the distance between the point a and the point b to the point d is increased by moving the point a and the point b in the material flow rate control ring, so that the speed between the point a flowing and the point b to the point d is reduced, the material flow rate difference between the point a and the point b and the point c is reduced, and vice versa, and through the arrangement of the material flow rate control ring, a material flow rate adjusting space is provided for stamping and shaping, cracking caused by uneven material flow rate is avoided, and the yield is improved. Meanwhile, in the forming process of the oil filler workpiece 11, the stamping and finishing are carried out after the stamping and shaping in the step 4, the precision of the material edges is only controlled by the step 4, the accumulation of a plurality of process errors does not exist, the positioning precision control is simpler, and the precision control of the material edges is improved.
The above are only preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (5)
1. A forming process of a workpiece at an oil filling port is characterized in that: the method comprises the following steps:
step 1: forming a shallow-modeling workpiece from a flat material through a drawing process;
and 2, step: roughly trimming and stamping the shallow-modeling workpiece to form a rough oil filler workpiece, stamping the middle part of the rough oil filler workpiece to form a rough oil filler surrounded by a rough trimming line, forming a forming corner ring at the outer edge of the rough trimming line, forming a distance L between the rough trimming line and the forming corner ring, arranging a finishing line between the rough trimming line and the forming corner ring, wherein the distance M between the rough trimming line and the finishing line is more than 0, the distance L is 15-30 mm, and the corner of the rough oil filler workpiece is positioned in the forming corner ring;
and step 3: shaping and stamping the rough oil filler workpiece to form a shaping oil filler workpiece, wherein a material flow rate control ring is formed between the rough edge trimming line and the forming corner ring in the shaping and stamping process, a finishing edge trimming line is arranged between the rough edge trimming line and the forming corner ring, the material flow rate is controlled through the material flow rate control ring, points a, b and c in the material flow rate control ring flow to a point d at the forming corner of the rough oil filler workpiece, the points a and b are respectively positioned at two sides of the point c, the speed of the material flow direction points a and b is adjusted by adjusting the distance L between the rough edge trimming line corresponding to the points a and b and the forming corner, and the flow speed difference of the points a, b and c flowing to the point d is reduced to form the shaping oil filler workpiece;
and 4, step 4: and carrying out fine trimming and stamping on the shaping oil filling port piece to form a fine trimming line, and finishing the forming processing of the oil filling port piece.
2. The oil filler hole workpiece forming process according to claim 1, wherein: in the step 2, the distance L is 20-25 mm.
3. The oil filler workpiece forming process according to claim 1, wherein: in the step 4, the distance M is removed through the fine trimming stamping, and the fine trimming line is formed.
4. The oil filler workpiece forming process according to claim 1, wherein: in the step 2, performing rough trimming and stamping on the shallow modeling workpiece to form primary processing of the workpiece with the rough oil filling port in the depth direction;
and in the step 3, the rough oil filler workpiece is subjected to shaping and stamping to finish the machining of the oil filler workpiece in the depth direction.
5. The oil filler hole workpiece forming process according to claim 1, wherein: and the distance N between the refined sideline and the forming corner ring is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110774816.XA CN113477777B (en) | 2021-07-08 | 2021-07-08 | Oil filler workpiece forming process |
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|---|---|---|---|
| CN202110774816.XA CN113477777B (en) | 2021-07-08 | 2021-07-08 | Oil filler workpiece forming process |
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| CN113477777A CN113477777A (en) | 2021-10-08 |
| CN113477777B true CN113477777B (en) | 2022-09-13 |
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