CN112623034B - Automobile front longitudinal beam with partitioned filling materials, automobile and manufacturing method of front longitudinal beam - Google Patents
Automobile front longitudinal beam with partitioned filling materials, automobile and manufacturing method of front longitudinal beam Download PDFInfo
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- CN112623034B CN112623034B CN202011583312.1A CN202011583312A CN112623034B CN 112623034 B CN112623034 B CN 112623034B CN 202011583312 A CN202011583312 A CN 202011583312A CN 112623034 B CN112623034 B CN 112623034B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
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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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Abstract
The invention relates to an automobile front longitudinal beam with a partitioned filling material, a vehicle and a manufacturing method of the front longitudinal beam. The vehicle of the invention comprises the front side frame. For the production method of the present invention, S1: connecting the extrusion die to extrusion equipment; s2: heating the aluminum alloy cast ingot; s3: the extrusion device advances to the extrusion die; s4: drawing the extrusion; s5: the aluminum alloy ingot inside the extrusion cylinder is entirely converted into an extrusion. S6: and partitioning the automobile front longitudinal beam along the longitudinal direction, and alternately filling rigid section filling materials and energy absorption section filling materials. The invention can ensure that the front longitudinal beam obtains good crushing, crumpling and deforming effects so as to protect the safety of passengers in the automobile.
Description
Technical Field
The invention relates to the technical field of automobile part design, in particular to an automobile front longitudinal beam filled with a partition material.
The invention also relates to a vehicle comprising the front longitudinal beam.
The invention also relates to a manufacturing method of the front longitudinal beam.
Background
With the rapid development of electric vehicles, in order to improve the driving range of electric vehicles and reduce energy consumption, light weight becomes an increasingly important part of vehicle design, but the strength of automobile part structures needs to be emphasized while realizing light weight, which is one of the subjects of current research and design.
The front longitudinal beam of the automobile is an important part of an automobile body structure for absorbing collision energy, the front end part of the front longitudinal beam is connected with an energy absorption box of a bumper system through a bolt, and the rear end part of the front longitudinal beam is connected with the floor of the automobile body through welding. The automobile front collision safety protection device is one of an important bearing unit, a force transmission part and an energy absorber of an automobile body, and the design of the automobile front collision safety protection device has great influence on the automobile front collision safety.
The ideal design of the front longitudinal beam of the automobile cannot ensure that the front longitudinal beam is too soft, otherwise, the living space of passengers cannot be effectively protected; the front longitudinal beam cannot be designed to be too rigid, so that the acceleration response of the vehicle is too large, secondary damage is caused to passengers, and the ideal design of the front longitudinal beam of the automobile should find balance between the two points.
The front longitudinal beam structure of the current automobile mostly adopts a steel plate stamping forming technology, and is mostly a thin-wall beam through the steel plate stamping forming, so that the front longitudinal beam structure has the defects that the front longitudinal beam structure is easy to bend in a high-speed collision process, a good crushing, crumpling and deformation effect cannot be obtained, and the energy absorption efficiency is poor.
Disclosure of Invention
The invention aims to provide an automobile front longitudinal beam with a partitioned filling material, which can enable the front longitudinal beam to obtain a good crushing, creasing and deforming effect, and can better induce the front longitudinal beam body to generate crushing type creasing and deforming so as to protect the safety of passengers in an automobile.
Another object of the present invention is to provide a vehicle including the above front side member, which is beneficial for reducing the impact of the collision on the vehicle interior and ensuring the safety of passengers in the vehicle.
It is still another object of the present invention to provide a method of manufacturing the front side member, which is advantageous in manufacturing the front side member.
The automobile front longitudinal beam with the partitioned filling material is of an integrally extruded hollow cavity structure and comprises a front longitudinal beam shell, a plurality of partitions are longitudinally formed along the front longitudinal beam shell, filling materials are filled in the partitions, the filling materials comprise rigid section filling materials and energy-absorbing section filling materials, the energy-absorbing section filling materials and the rigid section filling materials are alternately arranged, and the filling materials and the front longitudinal beam shell are connected through structural glue.
The hollow cavity formed by integral extrusion has good structural integrity, is not easy to fall apart when deformed, and is beneficial to
The deformation along the longitudinal direction is performed to obtain the expected crushing, and the filling materials of the energy absorption section and the rigid section are alternately arranged to be beneficial to inducing the deformation.
As a further improvement of the automobile front longitudinal beam, the filling material of the energy absorption section is a honeycomb material, and the honeycomb material comprises a plurality of cells.
The energy absorption section filling material can be honeycomb aluminum, the rigid section filling material can be aluminum pipes, aluminum profiles and the like, and the honeycomb material can be used for energy absorption and can also be used for induced deformation.
As a further improvement of the automobile front longitudinal beam, the shape of the cell is circular or polygonal. The round shape or the polygon shape is a proper pressed shape, so that the compression energy absorption effect is better.
As a further improvement of the automobile front longitudinal beam, the axial direction of the honeycomb material is parallel to the axial direction of the front longitudinal beam. The cell can be fully compressed to absorb more energy
As a further improvement of the automobile front longitudinal beam, the interface is reserved at the rear end of the front longitudinal beam and connected with the automobile body interface. The convenient installation is convenient for on the automobile body, and the assembly shaping of being convenient for promotes production efficiency.
As a further improvement of the automobile front longitudinal beam, the front end of the front longitudinal beam is provided with an interface which is connected with the energy absorption box or the bumper. The energy absorption box or the bumper can be conveniently connected, and assembly and production are facilitated.
As a further improvement of the automobile front longitudinal beam, the filling material can be in interference fit with the front longitudinal beam shell in the radial direction. The interference fit enables the filling material to be stabilized in the front longitudinal beam shell, so that slippage is prevented, and the expected crushing effect is influenced.
As a further improvement of the automobile front longitudinal beam, the number of the subareas is 5, and the subareas are longitudinally distributed along the front longitudinal beam and are respectively a rigid section filling material, an energy absorption section filling material, a rigid section filling material, an energy absorption section filling material and a rigid section filling material. The filling material of the energy absorption section is pressed to induce the front longitudinal beam to crush and deform along the longitudinal direction.
The invention relates to a vehicle, which comprises the front side frame. The vehicle with the front longitudinal beam can induce collision, crush deformation required by energy absorption occurs, and indoor safety of a passenger vehicle is guaranteed.
Aiming at the manufacturing method of the automobile front longitudinal beam of the partitioned filling material, the manufacturing method specifically comprises the following steps:
s1: connecting an extrusion die to a port of extrusion equipment through a bolt;
s2: heating the aluminum alloy cast ingot to 360-380 ℃, and putting the aluminum alloy cast ingot into an extrusion cylinder of extrusion equipment;
s3: an extrusion device in the extrusion equipment advances to an extrusion die at a certain extrusion speed to extrude the aluminum alloy cast ingot from a die hole of the extrusion die to form an extrusion piece;
s4: one end of the formed extrusion piece is fixed through traction equipment, and traction is completed along with the work of the extrusion equipment;
s5: and (3) converting all aluminum alloy cast ingots inside the extrusion container into extrusion parts, and cutting the extrusion parts according to preset sizes through cutting equipment to obtain the automobile front longitudinal beam.
S6: and partitioning the automobile front longitudinal beam along the longitudinal direction, and alternately filling rigid section filling materials and energy absorption section filling materials.
The front longitudinal beam formed by extrusion has good integrity, is not easy to scatter when being impacted and is convenient to induce deformation, the rigid section filling material and the energy absorption section filling material are alternately filled in the front longitudinal beam, so that the front longitudinal beam can be induced to crush and deform along the longitudinal direction when being impacted, an expected compression effect is obtained, the energy absorption section filling material is fully used, and the indoor safety of a passenger car is guaranteed.
When the automobile is in frontal collision and the front longitudinal beam is impacted, the invention has stronger energy absorption capacity, and the reasonable design and arrangement of the internal filling structure can better induce the front longitudinal beam body to generate crushing type fold deformation so as to protect the safety of passengers in the automobile.
Drawings
Fig. 1 is a schematic structural view of a front side member according to an embodiment of the present invention.
Fig. 2 is a transverse cross-sectional view of a front side member of one embodiment of the present invention.
Fig. 3 is a longitudinal sectional view of a front side member of one embodiment of the present invention.
Reference numerals: 1. a front longitudinal shell; 2. and (4) filling materials.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
Fig. 1-3 show an automobile front longitudinal beam with partitioned filling materials, which is an integrally extruded hollow cavity structure and comprises a front longitudinal beam shell 1, wherein a plurality of partitions are longitudinally arranged along the front longitudinal beam shell 1, filling materials 2 are arranged in each partition, the filling materials 2 comprise rigid section filling materials and energy absorption section filling materials, the energy absorption section filling materials and the rigid section filling materials are alternately arranged, and the filling materials 2 are connected with the front longitudinal beam shell 1 through structural adhesives.
The hollow cavity formed by integrally extrusion molding has good structural integrity, is not easy to scatter during deformation, is beneficial to deformation along the longitudinal direction so as to obtain the expected crushing effect, and the energy absorption section filling material and the rigid section filling material are alternately arranged so as to be beneficial to induced deformation.
In this embodiment, the energy absorbing section filler material is a honeycomb material, and the honeycomb material includes a plurality of cells.
In the present embodiment, the cell shape is circular or polygonal. The round shape or the polygon shape is a proper pressed shape, so that the compression energy absorption effect is better.
In the present embodiment, the axial direction of the honeycomb material and the axial direction of the front side member are parallel. The cell can be fully compressed to absorb more energy.
In this embodiment, the interface is left at the rear end of the front longitudinal beam to be connected with the vehicle body interface. The convenient installation is convenient for on the automobile body, and the assembly shaping of being convenient for promotes production efficiency.
In this embodiment, the front end of the front longitudinal beam should be connected to the energy absorption box or the bumper by an interface. The energy absorption box or the bumper can be conveniently connected, and assembly and production are facilitated.
In the present embodiment, the filler 2 may be in an interference fit with the front side member case 1 in the radial direction. The interference fit secures the filler material 2 in the front rail shell 1 against slippage, affecting the desired crushing effect.
In the embodiment, 5 subareas are distributed along the longitudinal direction of the front longitudinal beam and are respectively made of rigid section filling material, energy-absorbing section filling material, rigid section filling material, energy-absorbing section filling material and rigid section filling material. The filling material of the energy absorption section is pressed to induce the front longitudinal beam to crush and deform along the longitudinal direction.
Example 2
The invention also relates to a vehicle comprising the front longitudinal beam. The vehicle with the front longitudinal beam can induce the crush deformation required by energy absorption during collision, and is favorable for ensuring the indoor safety of the passenger vehicle.
Example 3
The invention also relates to a manufacturing method of the automobile front longitudinal beam of the partition filling material, which comprises the following steps:
s1: connecting an extrusion die to a port of extrusion equipment through a bolt;
s2: heating the aluminum alloy cast ingot to 360-380 ℃, and putting the aluminum alloy cast ingot into an extrusion cylinder of extrusion equipment;
s3: an extrusion device in the extrusion equipment advances to an extrusion die at a certain extrusion speed to extrude the aluminum alloy cast ingot from a die hole of the extrusion die to form an extrusion piece;
s4: one end of the formed extrusion piece is fixed through traction equipment, and traction is completed along with the work of the extrusion equipment;
s5: and (3) completely converting the aluminum alloy cast ingot in the extrusion cylinder into an extrusion piece, and cutting the extrusion piece according to a preset size through cutting equipment to obtain the automobile front longitudinal beam.
S6: and partitioning the automobile front longitudinal beam along the longitudinal direction, and alternately filling rigid section filling materials and energy absorption section filling materials.
The extrusion-molded front longitudinal beam has good integrity, is not easy to scatter when being impacted, is convenient to induce deformation, can be alternately filled with the rigid section filling material and the energy-absorbing section filling material, can induce the front longitudinal beam to generate crushing deformation along the longitudinal direction when being impacted, obtains expected compression effect, fully uses the energy-absorbing section filling material, and ensures the indoor safety of passenger cars.
The invention provides an automobile front longitudinal beam with partitioned filling materials, which comprises a front longitudinal beam shell and energy-absorbing material fillers with different strengths in a cavity in the beam. The filling material is connected with the front longitudinal beam shell by coating structural adhesive. The structure of the invention can improve the mechanical performance of the front longitudinal beam of the automobile, further improve the energy absorption effect of the front longitudinal beam, well adapt to the impact at high speed and low speed, well induce the deformation of the front longitudinal beam when being impacted, and has reliable performance.
Example 4
The automobile front longitudinal beam with the partitioned filling materials comprises a front longitudinal beam shell 1 and the filling materials 2 in a cavity inside the front longitudinal beam shell. The front side member filler 2 differs in the axial direction of the front side member 1.
The axial dimension of the filling material 2 should be no greater than that of the front side rail housing 1.
The filling material 2 may be in an interference fit with the front longitudinal beam housing 1 in the radial direction.
The structural materials filled in different axial subareas of the front longitudinal beam are connected with the front longitudinal beam shell through structural adhesive, welding or mechanical connection.
The structural materials filled in different axial subareas of the front longitudinal beam are connected by structural adhesive, welding or mechanical connection.
The material filled in the automobile front longitudinal beam of the partition filling material can be a honeycomb material, the honeycomb material is connected with the front longitudinal beam shell and enclosed into a plurality of cells, and the axial directions of different honeycomb materials are parallel to the axial direction of the front longitudinal beam.
The rear end of the front longitudinal beam is provided with an interface to be connected with the vehicle body interface.
The front end of the front longitudinal beam is provided with an interface to be connected with the energy absorption box or the bumper.
The embodiment also relates to a vehicle comprising the front side frame.
Example 5
The invention aims to solve the technical problem in the prior art, and provides an automobile front longitudinal beam which is filled with materials with different strengths in a cavity in a partitioned manner.
The technical scheme adopted by the invention is as follows: and materials with different strengths are filled in the inner cavity subarea of the front longitudinal beam shell, and the filler and the front longitudinal beam shell are welded or mechanically connected by structural adhesive.
According to the scheme, different filling materials are connected through structural adhesive, welding or machinery.
The invention provides an automobile front longitudinal beam filled with materials with different strengths in a partitioned mode, the energy absorption capacity of the front longitudinal beam can be improved by filling the materials with different strengths in the front longitudinal beam, in addition, the deformation of the front longitudinal beam when the front longitudinal beam is impacted can be better induced by reasonable design and arrangement of the filling materials, the performance is reliable, the automobile body is well protected, the damage of the collision to passengers in the automobile can be better reduced, and the performance is reliable.
Example 6
As shown in figures 1-3, the automobile front longitudinal beam with the partitioned filling materials comprises a front longitudinal beam shell 1, a front longitudinal beam shell internal cavity filling material 2, wherein the filling materials are connected with each other through structural glue.
The front longitudinal beam shell is of a hollow cavity structure and is integrally extruded and formed by the following steps
Step one, connecting an extrusion die to a port of extrusion equipment through a bolt;
step two, heating the aluminum alloy cast ingot to 360-380 ℃, and putting the aluminum alloy cast ingot into an extrusion cylinder of extrusion equipment;
step three, an extrusion device in the extrusion equipment advances to an extrusion die at a certain extrusion speed to extrude the aluminum alloy cast ingot, and the aluminum alloy cast ingot is extruded from a die hole of the extrusion die to form an extrusion piece;
fixing one end of the formed extrusion piece through traction equipment, and completing traction along with the work of the extrusion equipment;
and step five, all the aluminum alloy cast ingots in the extrusion cylinder are converted into extrusion pieces, and the extrusion pieces are cut according to the preset size through cutting equipment.
The internal space can be in various shapes, wherein the cross section of the filler can be in a circular shape or other polygonal shapes, and the filler can also be made of honeycomb materials to surround cells, and the cross section of the filler is a hexagonal cell as an example in the patent.
The cross section of each single cell is hexagonal, and the cells are arranged close to the left side wall and the right side wall of the front longitudinal beam.
The filled honeycomb structural material is arranged perpendicular to the upper wall surface and the lower wall surface of the front longitudinal beam shell, so that the plane of the cross section of the honeycomb structural material is parallel to the upper wall surface and the lower wall surface of the front longitudinal beam.
Different materials and different cross-sectional shapes can be selected for different subareas, and the honeycomb structure made of different materials is taken as an example in the invention.
The filling material and the front longitudinal beam shell are connected into an integrated structure through structural adhesive.
The number of partitions of the filling material may be different according to the specific vehicle type, and 5 partitions are used here, and in the filling manner, the following two manners may be used, but not limited thereto.
Energy-absorbing materials with lower compressive strength are filled in three subareas from a section close to the energy-absorbing box, the compressive strength of the materials is gradually increased, and materials with higher compressive strength are filled in the following subareas. The filling mode can effectively enhance the energy absorption effect of the energy absorption section and the strength of the rigid section and guide the front longitudinal beam to reasonably deform.
The materials with larger compressive strength and smaller compressive strength are filled in all the subareas at intervals, and the final effect is that the axial filling strength of the whole front longitudinal beam is strong and weak. The filling mode can also effectively enhance the energy absorption effect of the front longitudinal beam, ensure the deformation and guide the front longitudinal beam to reasonably deform.
The automobile front longitudinal beam with the structure is installed, and then the automobile front longitudinal beam and the frame form a whole. When the automobile is in frontal collision and the front longitudinal beam is impacted, the invention has stronger energy absorption capacity, and the reasonable design and arrangement of the internal filling structure can better induce the front longitudinal beam body to generate crushing type fold deformation so as to protect the safety of passengers in the automobile.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. It will be apparent to those skilled in the art that various equivalent substitutions and obvious modifications can be made without departing from the spirit of the invention, and all changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (1)
1. A manufacturing method of an automobile front longitudinal beam with a partition filling material is characterized in that: the automotive front longitudinal beam with the partitioned filling materials is a hollow cavity structure formed by extrusion in an integrated manner, and comprises a front longitudinal beam shell (1), wherein a plurality of partitions are longitudinally formed along the front longitudinal beam shell (1), filling materials (2) are arranged in each partition, the filling materials (2) comprise rigid section filling materials and energy-absorbing section filling materials, the energy-absorbing section filling materials and the rigid section filling materials are alternately arranged, and the filling materials (2) are connected with the front longitudinal beam shell (1) through structural adhesives;
the energy absorption section filling material is a honeycomb material, and the honeycomb material comprises a plurality of cells; the rigid section filling material is an aluminum pipe or an aluminum profile;
the shape of the cell is circular or polygonal; the cell elements are arranged close to the left side wall and the right side wall of the front longitudinal beam; the filled honeycomb material is vertically arranged with the upper and lower wall surfaces of the front longitudinal beam shell;
the axial direction of the honeycomb material is parallel to the axial direction of the front longitudinal beam;
the rear end of the front longitudinal beam is provided with an interface which is connected with a vehicle body interface;
the front end of the front longitudinal beam is provided with an interface which is connected with the energy absorption box or the bumper;
the filling material (2) is in interference fit with the front longitudinal beam shell (1) in the radial direction;
the number of the subareas is 5, and the subareas are longitudinally distributed along the front longitudinal beam and are respectively made of rigid section filling material, energy-absorbing section filling material, rigid section filling material, energy-absorbing section filling material and rigid section filling material;
the manufacturing method specifically comprises the following steps:
s1: connecting an extrusion die to a port of extrusion equipment through a bolt;
s2: heating the aluminum alloy cast ingot to 360-380 ℃, and putting the aluminum alloy cast ingot into an extrusion cylinder of extrusion equipment;
s3: an extrusion device in the extrusion equipment advances to an extrusion die at a certain extrusion speed to extrude the aluminum alloy cast ingot from a die hole of the extrusion die to form an extrusion piece;
s4: one end of the formed extrusion piece is fixed through traction equipment, and traction is completed along with the work of the extrusion equipment;
s5: all aluminum alloy cast ingots in the extrusion cylinder are converted into extrusion pieces, and the extrusion pieces are cut according to preset sizes through cutting equipment to obtain the automobile front longitudinal beam;
s6: and partitioning the automobile front longitudinal beam along the longitudinal direction, and alternately filling rigid section filling materials and energy absorption section filling materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011583312.1A CN112623034B (en) | 2020-12-28 | 2020-12-28 | Automobile front longitudinal beam with partitioned filling materials, automobile and manufacturing method of front longitudinal beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011583312.1A CN112623034B (en) | 2020-12-28 | 2020-12-28 | Automobile front longitudinal beam with partitioned filling materials, automobile and manufacturing method of front longitudinal beam |
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| CN112623034A CN112623034A (en) | 2021-04-09 |
| CN112623034B true CN112623034B (en) | 2022-05-13 |
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| CN102390434A (en) * | 2011-10-19 | 2012-03-28 | 湖南大学 | Front longitudinal beam structure for automobiles |
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