CN113665516A - High-strength steel anti-collision beam and forming method thereof - Google Patents
High-strength steel anti-collision beam and forming method thereof Download PDFInfo
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- CN113665516A CN113665516A CN202111107253.5A CN202111107253A CN113665516A CN 113665516 A CN113665516 A CN 113665516A CN 202111107253 A CN202111107253 A CN 202111107253A CN 113665516 A CN113665516 A CN 113665516A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R2019/1806—Structural beams therefor, e.g. shock-absorbing
- B60R2019/1813—Structural beams therefor, e.g. shock-absorbing made of metal
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Abstract
The invention discloses a high-strength steel anti-collision beam and a forming method thereof, and belongs to the technical field of anti-collision beams. The anti-collision beam is formed by bending a steel plate into an anti-collision beam with a section shaped like a Chinese character 'ri', and the anti-collision beam consists of an upper side plate, a right side plate, a lower side plate, a left side plate and a partition plate connected between the upper side plate and the lower side plate, wherein the upper side plate, the right side plate, the lower side plate and the left side plate are enclosed into a rectangle; the lower side plate is at least provided with an inwards concave reinforcing rib; the middle part of the upper side plate is provided with a bent opening of the steel plate, the steel plates on two sides of the opening are respectively bent inwards by 90 degrees, the steel plate on one side is bent to form a shorter stub bar, and the steel plate on the other side is bent to form a longer partition plate; the lower part of the partition plate abuts against one side of the reinforcing rib, a first welding seam is formed between the partition plate and the reinforcing rib through welding, and a second welding seam is formed between the partition plate and the stub bar through welding. The first welding seam that baffle and strengthening rib welding formed hides in the cavity, is in the strengthening rib rear, does not cause direct impact to the welding seam during the striking, avoids the welding seam inefficacy.
Description
Technical Field
The invention relates to a high-strength steel anti-collision beam and a forming method thereof, and belongs to the technical field of anti-collision beams.
Background
With the increasing automobile holding capacity, the environmental problem is also becoming more severe. In order to improve energy saving and environmental protection of automobiles, reduce fuel consumption and emission, automobiles are increasingly paid more attention by manufacturers and consumers in terms of miniaturization, light weight and safety. When the automobile collides in the forward direction, the front anti-collision beam structure can effectively absorb impact energy and reduce the damage to the passenger compartment and the automobile body structure, and the front anti-collision beam structure is an important safety part on the automobile. The front anti-collision beam structure comprises an anti-collision cross beam and an energy absorption box, and the anti-collision cross beam is a main anti-bending piece of the front anti-collision beam structure during frontal collision of an automobile. The truncated shape design has better bending resistance and torsion resistance and better weight reduction effect, and also needs to have a welding seam protection function to avoid directly impacting the welding seam to cause welding seam failure. The research and development of the cross beam section with more reasonable structural design is an important subject which is continuously researched by the industry.
Because the welding seam of traditional B style of calligraphy cross-section anticollision crossbeam is located the place ahead, does not have any safeguard measure, can directly cause the impact to the welding seam when taking place to strike, and damage to the welding seam is great, and the opening in the middle of the B font structure is a semi-enclosed construction in addition, when strikeing the emergence in the center, can lead to this opening to the both sides tensile, leads to the welding seam to become invalid to the car body coupling part is pulled bad. Therefore, the high-strength steel anti-collision beam and the forming method thereof are designed, the whole shape of the cross section of the beam is of a herringbone structure, the whole bending resistance and the torsion resistance are better, the local reinforcing rib structure of the cross section can further enhance the bending resistance, and the problem of wrinkling during forming can be solved; the reinforcing ribs and the stub bars are welded, so that the welding seams can be protected, and the deformation of the cavity body is prevented, and the cracking and failure of the welding seams are avoided.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the high-strength steel anti-collision beam and the forming method thereof solve the problems that the existing B-shaped cross section anti-collision beam has no weld joint protection and the weld joint is easy to crack due to collision.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a high-strength steel anti-collision beam is an anti-collision beam with a section shaped like a Chinese character 'ri' formed by bending a steel plate, and is composed of an upper side plate, a right side plate, a lower side plate, a left side plate and a partition plate connected between the upper side plate and the lower side plate, wherein the upper side plate, the right side plate, the lower side plate and the left side plate are enclosed into a rectangle;
the lower side plate is at least provided with an inwards concave reinforcing rib;
the middle part of the upper side plate is provided with a bent opening of the steel plate, the steel plates on two sides of the opening are respectively bent inwards by 90 degrees, the steel plate on one side is bent to form a shorter stub bar, and the steel plate on the other side is bent to form a longer partition plate;
the lower part of the partition plate abuts against one side of the reinforcing rib, a first welding seam is formed between the partition plate and the reinforcing rib through welding, and a second welding seam is formed between the partition plate and the stub bar through welding.
As a preferable example, the bent parts of the anti-collision cross beam are transition fillets, and the second welding line is located at a concave part between the partition plate and the stub bar transition fillet.
As a preferable example, the reinforcing rib is a square rib, and the bent part of the square rib is a transition round angle.
As a preferable example, the lower side plate is provided with two concave reinforcing ribs which are respectively positioned in the right cavity and the left cavity.
A method for forming a high-strength steel anti-collision beam comprises the following steps:
(1) forming a reinforcing rib, namely rolling the middle part of a whole steel plate to form at least one convex reinforcing rib;
(2) forming a right cavity, namely continuously rolling and bending the steel plate on the right side of the reinforcing rib three times along the anticlockwise direction, wherein each time the steel plate is bent for 90 degrees, transition fillets are adopted at the bent positions, so that a right cavity formed by a lower side plate where the reinforcing rib is located, a right side plate formed after the right side plate is bent for the first time, an upper side plate formed by bending for the second time and a partition plate formed by bending for the third time is formed, the lower part of the partition plate abuts against one side of the reinforcing rib, and a first welding line is formed between the partition plate and the reinforcing rib through laser welding;
(3) left cavity shaping, follow clockwise continuous roll-in the cubic of buckling with the left steel sheet of strengthening rib, 90 buckle at every turn, the department of buckling all adopts the transition fillet, form the lower plate by the strengthening rib place, the left side board that forms after buckling for the first time, the last sideboard that buckles for the second time and form, the left cavity that the stub bar that buckles for the third time formed constitutes, the second welding seam that caves in is formed through laser welding in the baffle of last sideboard opening both sides and the sunken department between the stub bar transition fillet, a monoblock steel sheet is buckled and is welded the back through the roll-in, form the anticollision crossbeam in style of calligraphy cross-section of day.
The invention has the beneficial effects that:
(1) the cross section of the anti-collision beam is in a shape like a Chinese character 'ri', the overall bending resistance and the torsion resistance are better than those of the traditional B shape, and the bending resistance can be further enhanced by the local reinforcing rib structure of the cross section; the forming method can solve the problem of wrinkling during forming;
(2) the first welding seam formed by welding the partition plate and the reinforcing ribs is hidden in the cavity and positioned behind the reinforcing ribs, so that the welding seam is not directly impacted when being impacted, the failure of the welding seam is avoided, and the effect of protecting the welding seam is well achieved;
(3) the second welding seam also sets up in the sunken between baffle and stub bar transition fillet, and bellied transition fillet also has the protection effect to the second welding seam.
Drawings
FIG. 1 is a schematic view of a structure of the present invention using a reinforcing rib;
FIG. 2 is a schematic view of the structure of the present invention using two reinforcing ribs;
FIG. 3 is a schematic flow chart of the molding method of the present invention;
FIG. 4 is a schematic structural view of a laser welding machine for welding a first weld according to the present invention;
FIG. 5 is a schematic structural view of a laser welding machine for welding a second weld according to the present invention.
In the figure: the structure comprises an upper side plate 1, a right side plate 2, a lower side plate 3, a left side plate 4, a partition plate 5, a right cavity 6, a left cavity 7, a reinforcing rib 8, a stub bar 9, a first welding line 10, a second welding line 11, a transition fillet 12 and a steel plate 13.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the invention easily understood, the invention is further described with reference to the following embodiments.
Example 1
As shown in fig. 1, a high-strength steel anti-collision beam is an anti-collision beam with a section shaped like a Chinese character ri formed by bending a steel plate 13, and is composed of an upper side plate 1, a right side plate 2, a lower side plate 3, a left side plate 4 and a partition plate 5 connected between the upper side plate 1 and the lower side plate 3, wherein the anti-collision beam is divided into a right cavity 6 and a left cavity 7 by the partition plate 5;
the lower side plate 3 is provided with an inwards concave reinforcing rib 8;
the middle part of the upper side plate 1 is provided with a bent opening of the steel plate 13, the steel plates 13 on the two sides of the opening are respectively bent inwards by 90 degrees, the steel plate 13 on one side is bent to form a shorter stub bar 9, and the steel plate 13 on the other side is bent to form a longer partition plate 5;
the lower part of the partition plate 5 abuts against one side of the reinforcing rib 8, a first welding seam 10 is formed between the partition plate 5 and the reinforcing rib 8 through welding, and a second welding seam 11 is formed between the partition plate 5 and the stub bar 9 through welding.
The bending part of the anti-collision beam adopts a transition fillet 12, the radius of the transition fillet 12 is not less than 3 times of the thickness of an anti-collision beam steel plate 13, and a second welding line 11 is positioned at the concave part between the partition plate 5 and the transition fillet 12 of the stub bar 9.
The reinforcing rib 8 adopts a square rib, and the bending part of the square rib adopts a transition round angle 12. The ribs have a height and width of between about 1/4 and 1/3 of the height of the impact beam profile.
Following sideboard 3 is positive for the collision, when the anticollision crossbeam openly receives the collision impact, the square rib has better rigidity, is difficult to warp, plays the guard action to the welding seam, and in addition, the welding seam is hidden in the cavity, has avoided the direct impact of welding seam, also plays the welding seam guard action.
The first welding seam 10 and the second welding seam 11 are both positioned at the position of the transition fillet 12, so that the contact area of welding can be increased, and the welding strength is improved. When one welding seam is adopted at present, the welding strength needs to be improved by two welding seams at two sides because the contact area of welding is small and the welding is easy to crack under stress.
Example 2
As shown in fig. 2, the lower panel 3 is provided with two concave reinforcing ribs 8, and the two reinforcing ribs 8 are respectively located in the right cavity 6 and the left cavity 7. The other structure is the same as embodiment 1.
The lower side plate 3 is used as a collision front, and the left cavity 7 is arranged at the upper part, and the right cavity 6 is arranged at the lower part. When an automobile collides, the collision force of the upper part of the front anti-collision beam is usually strong, and the collision force of the lower part of the front anti-collision beam is relatively weak, so that deformation can be resisted only by arranging the reinforcing rib 8 in the left cavity 7; in order to further enhance the strength of the lower part of the anti-collision beam, a reinforcing rib 8 is also arranged on the right cavity 6, and the strength of the right cavity 6 and the strength of the left cavity 7 are enhanced.
As shown in fig. 1 to 5, according to the structure of the high-strength steel anti-collision beam, a method for forming the high-strength steel anti-collision beam is provided, which comprises the following steps:
(1) forming the reinforcing ribs 8, and rolling the middle part of a whole steel plate 13 to form at least one convex reinforcing rib 8;
(2) forming a right cavity 6, continuously rolling and bending a steel plate 13 on the right side of the reinforcing rib 8 three times along the anticlockwise direction, wherein the steel plate is bent 90 degrees at each time, transition fillets 12 are adopted at the bent positions to form the right cavity 6 consisting of a lower side plate 3 where the reinforcing rib 8 is located, a right side plate 2 formed after the first bending, an upper side plate 1 formed by the second bending and a partition plate 5 formed by the third bending, the lower part of the partition plate 5 abuts against one side of the reinforcing rib 8, and a first welding line 10 is formed between the partition plate 5 and the reinforcing rib 8 through laser welding;
(3) the shaping of left cavity 7, roll in succession the cubic of buckling clockwise with 8 left steel sheets 13 of strengthening rib, 90 buckles at every turn, the department of buckling all adopts transition fillet 12, form the lower panel 3 by 8 places in strengthening rib, the left side board 4 that forms after buckling for the first time, the last sideboard 1 that the second time buckles and forms, the left cavity 7 that stub bar 9 that the third time buckles and forms, the baffle 5 of 1 opening both sides of last sideboard and the sunken department between stub bar 9 transition fillet 12 pass through laser welding and form the second welding seam 11 that caves in, a monoblock steel sheet 13 is buckled and is welded the back through the roll-in, form the crashproof crossbeam of day style of calligraphy cross-section.
The anti-collision cross beam is formed by rolling, and compared with a stamping process, the anti-collision cross beam is high in material utilization rate and production efficiency.
The working principle is as follows:
the cross section of the anti-collision beam is in a shape like a Chinese character 'ri', the overall bending resistance and the torsion resistance are better than those of the traditional B shape, and the bending resistance can be further enhanced by the local reinforcing rib 8 structure of the cross section; the forming method can solve the problem of wrinkling during forming;
the first welding seam 10 formed by welding the partition plate 5 and the reinforcing ribs 8 is hidden in the cavity and is positioned behind the reinforcing ribs 8, so that the welding seam is not directly impacted when being impacted, the failure of the welding seam is avoided, and the effect of protecting the welding seam is well achieved;
the second welding seam 11 is also arranged in the recess between the partition plate 5 and the transition fillet 12 of the stub bar 9, and the raised transition fillet 12 also has a protective effect on the second welding seam 11.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A high-strength steel anti-collision beam is characterized by being an anti-collision beam with a section shaped like a Chinese character 'ri' formed by bending a steel plate, wherein the anti-collision beam is composed of an upper side plate, a right side plate, a lower side plate, a left side plate and a partition plate, the upper side plate, the right side plate, the lower side plate and the left side plate are enclosed into a rectangle, the partition plate is connected between the upper side plate and the lower side plate, and the anti-collision beam is divided into a right cavity and a left cavity by the partition plate;
the lower side plate is at least provided with an inwards concave reinforcing rib;
the middle part of the upper side plate is provided with a bent opening of the steel plate, the steel plates on two sides of the opening are respectively bent inwards by 90 degrees, the steel plate on one side is bent to form a shorter stub bar, and the steel plate on the other side is bent to form a longer partition plate;
the lower part of the partition plate abuts against one side of the reinforcing rib, a first welding seam is formed between the partition plate and the reinforcing rib through welding, and a second welding seam is formed between the partition plate and the stub bar through welding.
2. The high-strength steel anti-collision beam according to claim 1, wherein the bending parts of the anti-collision beam are transition fillets, and the second welding line is located in a concave part between the partition plate and the stub bar transition fillet.
3. The high-strength steel anti-collision beam according to claim 1, wherein the reinforcing ribs are square ribs, and transition fillets are arranged at the bent parts of the square ribs.
4. The high-strength steel anti-collision beam according to claim 1, wherein the lower side plate is provided with two concave reinforcing ribs, and the two reinforcing ribs are respectively positioned in the right cavity and the left cavity.
5. A method for forming a high-strength steel anti-collision beam is characterized by comprising the following steps:
(1) forming a reinforcing rib, namely rolling the middle part of a whole steel plate to form at least one convex reinforcing rib;
(2) forming a right cavity, namely continuously rolling and bending the steel plate on the right side of the reinforcing rib three times along the anticlockwise direction, wherein each time the steel plate is bent for 90 degrees, transition fillets are adopted at the bent positions, so that a right cavity formed by a lower side plate where the reinforcing rib is located, a right side plate formed after the right side plate is bent for the first time, an upper side plate formed by bending for the second time and a partition plate formed by bending for the third time is formed, the lower part of the partition plate abuts against one side of the reinforcing rib, and a first welding line is formed between the partition plate and the reinforcing rib through laser welding;
(3) left cavity shaping, follow clockwise continuous roll-in the cubic of buckling with the left steel sheet of strengthening rib, 90 buckle at every turn, the department of buckling all adopts the transition fillet, form the lower plate by the strengthening rib place, the left side board that forms after buckling for the first time, the last sideboard that buckles for the second time and form, the left cavity that the stub bar that buckles for the third time formed constitutes, the second welding seam that caves in is formed through laser welding in the baffle of last sideboard opening both sides and the sunken department between the stub bar transition fillet, a monoblock steel sheet is buckled and is welded the back through the roll-in, form the anticollision crossbeam in style of calligraphy cross-section of day.
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| CN202111107253.5A CN113665516A (en) | 2021-09-22 | 2021-09-22 | High-strength steel anti-collision beam and forming method thereof |
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| CN202111107253.5A CN113665516A (en) | 2021-09-22 | 2021-09-22 | High-strength steel anti-collision beam and forming method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083239A (en) * | 2021-11-24 | 2022-02-25 | 无锡市源隆金属制品有限公司 | High-strength new energy automobile blade battery tray frame beam and production process thereof |
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2021
- 2021-09-22 CN CN202111107253.5A patent/CN113665516A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114083239A (en) * | 2021-11-24 | 2022-02-25 | 无锡市源隆金属制品有限公司 | High-strength new energy automobile blade battery tray frame beam and production process thereof |
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