CN215314981U - Electric auxiliary variable cross-section rolling forming device - Google Patents
Electric auxiliary variable cross-section rolling forming device Download PDFInfo
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- CN215314981U CN215314981U CN202121147421.9U CN202121147421U CN215314981U CN 215314981 U CN215314981 U CN 215314981U CN 202121147421 U CN202121147421 U CN 202121147421U CN 215314981 U CN215314981 U CN 215314981U
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- variable cross
- upper die
- power supply
- roll forming
- electrically assisted
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Abstract
The utility model discloses an electrically-assisted variable cross-section rolling forming device, and belongs to the technical field of metal plate forming. The electrically-assisted variable cross-section roll forming device comprises: the device comprises a frame, a base, an upper die, a lower die, a pulse power supply and two forming roller systems; the frame is slidably arranged on the base; the upper die is arranged on the rack in a lifting manner; the lower die is fixedly arranged on the rack and is opposite to the upper die; the frame is arranged between the two forming roller systems; the positive pole of the pulse power supply is connected with the upper die and the lower die, and the negative pole of the pulse power supply is connected with the two forming roller systems. The electrically-assisted variable cross-section rolling forming device reduces equipment load, reduces energy consumption and cost, and enables the metal difficult to deform to form the part with the complex cross section.
Description
Technical Field
The utility model relates to the technical field of metal plate forming, in particular to an electric auxiliary variable-section rolling forming device.
Background
In the fields of traffic, aerospace and the like, high-strength materials or light metals are increasingly applied due to the requirement of light weight. For example, in automobile bodies, ultrahigh-strength steel having a tensile strength of greater than 780MPa is becoming mainstream, and is mainly used for structural members or safety members. At present, the martensite steel for cold forming with the tensile strength reaching 1500MPa is also applied to the body in white of the automobile. The structural members or safety members of the automobile body are mostly long members, typically, column members such as A/B/C columns and the like, beam members such as front/rear longitudinal beams and the like, reinforcing plates/rods and bumpers and the like, and under the requirements of automobile appearance aesthetics, aerodynamics, light weight and safety, the parts generally have the characteristics of complex geometric shapes such as curved surface, variable cross section, multi-structural characteristics and the like, and in addition, the parts also need to meet the production characteristics of variable batch flexibility based on the current trends of automobile platform flexibility and automobile type familial design. Compared with common steel, the ultrahigh-strength steel has the advantages that the strength is greatly improved, the plasticity is reduced, on one hand, the forming mode needs to be reasonably selected, and on the other hand, the complexity of the formed parts is limited. At present, the manufacturing modes of the ultra-high strength vehicle body member mainly comprise cold stamping, hot forming and roll forming.
Cold stamping is the most common forming method for steel plates for vehicle bodies, but is limited by the tonnage of a press and the strength and abrasion of die materials, and great challenges exist when forming ultrahigh-strength steel, particularly steel plates with the strength of more than 1000 MPa. And as the strength is increased, the sheet forming performance is reduced, and the complexity of the shape of the stamping part is also limited.
Hot forming is an advanced forming technology developed in recent years with the increasing demand for light weight, which obtains parts with strength higher than 1300MPa by rapidly heating boron steel to austenitization, and then press forming and quenching in a die with a cooling system. However, since the workpiece needs to be heated and quenched in the mold, it has major disadvantages, such as large investment, slow production cycle, high mold price, high energy consumption, and relatively harsh working environment.
The roll forming is also called cold roll forming, is particularly suitable for producing large-batch long workpieces with single cross sections, but cannot be suitable for forming ultrahigh-strength steel parts with complex shapes. In addition, in the field of aerospace, titanium alloy components are widely applied, and because titanium alloy plates are low in plasticity, the titanium alloy plates are mainly formed in a heating mode at present, so that the energy consumption is high, and a plurality of restrictions are also caused in flexible manufacturing of parts.
The difficult-to-form metal has challenges in forming components with complex shapes, and with the increasing application of the components in the fields of traffic, aerospace and the like, a new method and a new technology with high performance, low cost and high efficiency of the difficult-to-form metal complex components are urgently sought and developed.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electrically-assisted variable cross-section rolling forming device, which solves or partially solves the technical problem that in the prior art, the load requirement of equipment is high due to the fact that parts are formed by means of traditional stamping, hot forming, rolling and the like.
In order to solve the technical problem, the utility model provides an electrically-assisted variable cross-section rolling forming device, which comprises: the device comprises a frame, a base, an upper die, a lower die, a pulse power supply and two forming roller systems; the frame is slidably arranged on the base; the upper die is arranged on the rack in a lifting manner; the lower die is fixedly arranged on the rack and is opposite to the upper die; the frame is arranged between the two forming roller systems; the positive pole of the pulse power supply is connected with the upper die and the lower die, and the negative pole of the pulse power supply is connected with the two forming roller systems.
Furthermore, a first insulating part is fixedly arranged between the lower die and the rack.
Further, the electrically-assisted variable cross-section roll forming device further comprises: a lifting mechanism; the fixed end of the lifting mechanism is fixedly connected with the rack, and the action end of the lifting mechanism is connected with the upper die.
Furthermore, a second insulating part is fixedly arranged between the action end of the lifting mechanism and the upper die.
Further, a wedge-shaped block is fixedly arranged on the base; the frame is fixedly provided with a wedge-shaped groove, and the wedge block is embedded into the wedge-shaped groove.
Further, the forming roll system comprises: the device comprises a supporting seat, a position adjusting mechanism, a connecting seat and a press roller; the fixed end of the position adjusting mechanism is fixedly arranged on the supporting seat, and the action end of the position adjusting mechanism is hinged with the connecting seat; the compression roller is rotatably arranged on the connecting seat; the compression roller is connected with the negative electrode of the pulse power supply.
Further, the position adjustment mechanism includes: at least six driving motors and at least six ball screws; the six driving motors correspond to at least six ball screws one by one, the fixed ends of the driving motors are fixedly connected with the supporting seat, and the action ends of the driving motors are fixedly connected with the corresponding ball screws; at least three hinge points are arranged on the end face, facing the supporting seat, of the connecting seat in a staggered manner; and at least two ball screws in the six ball screws are hinged with one hinge point.
Further, the connection socket includes: the supporting plate, the third insulating part, the supporting column and the connecting plate; the third insulating part is fixedly connected with the end face, deviating from the position adjusting mechanism, of the supporting plate; the first end of the supporting column is fixedly connected with the third insulating part, and the second end of the supporting column is fixedly connected with the connecting plate.
Further, the connecting plate is rotatably provided with a clamping roller.
Further, the current density of the pulse power supply ranges from 0 to 35A.mm-2Duty ratio range of 0-100%, and pulse frequency range of 0-999Hz
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
because the frame is arranged on the base in a sliding way, the upper die is arranged on the frame in a lifting way, the lower die is fixedly arranged on the frame, the lower die is opposite to the upper die, the frame is arranged between the two forming roller systems, the positive pole of the pulse power supply is connected with the upper die and the lower die, and the negative pole of the pulse power supply is connected with the two forming roller systems, the blank can be placed on the lower die, the upper die moves towards the lower die to clamp the blank, so as to realize the bottom forming of the part, the pulse power supply is started, the pulse power supply supplies power to the upper die, the lower die and the two forming roller systems, the electro-plastic effect is realized by forming migration electron wind inside the metal material by electrifying, the plasticity of the steel material and the titanium alloy material can be effectively improved, therefore, the pulse current with certain current density is electrified for the blank, certain electrifying time is ensured, the plasticity of the material can be improved, and the complexity of the part forming is improved, the frame moves on the base, the two forming roller systems perform shape-following rolling on two side edges of the blank to realize rolling deformation, the device is small compared with a device required by stamping due to the combination of the electro-plasticity and the rolling technology, the heating process and the energy consumption caused by the hot-state forming are omitted, the manufacturing process is reduced, the requirement on the plasticity of the material is low, the equipment load is reduced, the energy consumption and the cost are reduced, and the metal difficult to deform is formed into the parts with the complicated sections.
Drawings
Fig. 1 is a schematic structural diagram of an electrically-assisted variable cross-section roll forming device provided in an embodiment of the present invention;
FIG. 2 is a left side view of the electrically assisted variable cross-section roll forming apparatus of FIG. 1;
FIG. 3 is a right side view of the electrically assisted variable cross-section roll forming apparatus of FIG. 1;
fig. 4 is a schematic structural diagram of a forming roller system of the electrically-assisted variable cross-section roll forming device in fig. 1.
Detailed Description
Referring to fig. 1 to 3, an electrically-assisted variable cross-section roll forming apparatus according to an embodiment of the present invention includes: the device comprises a frame 1, a base 2, an upper die 3, a lower die 4, a pulse power supply 5 and two forming roller systems 6.
The frame 1 is slidably disposed on the base 2.
The upper die 3 is arranged on the frame 1 in a lifting way.
The lower die 4 is fixedly arranged on the frame 1, and the lower die 4 is opposite to the upper die 3.
The frame 1 is arranged between two forming roll systems 6.
The positive pole of the pulse power supply 5 is connected with the upper die 3 and the lower die 4, and the negative pole of the pulse power supply 5 is connected with the two forming roller systems 6.
In the embodiment of the application, because the frame 1 is slidably arranged on the base 2, the upper die 3 is arranged on the frame 1 in a lifting manner, the lower die 4 is fixedly arranged on the frame 1, the lower die 4 is opposite to the upper die 3, the frame 1 is arranged between the two forming roller systems 6, the anode of the pulse power supply 5 is connected with the upper die 3 and the lower die 4, and the cathode of the pulse power supply 5 is connected with the two forming roller systems 6, the blank 7 can be placed on the lower die 4, the upper die 3 acts towards the lower die to clamp the blank 7, so as to realize the bottom forming of a part, the pulse power supply 5 is started, the pulse power supply 5 supplies power to the upper die 3, the lower die 4 and the two forming roller systems 6, the electro-plastic effect is realized by forming migration electron wind inside a metal material by electrifying, the plasticity of the steel material and the titanium alloy material can be effectively improved, and therefore, the pulse current with certain current density is electrified to the upper die 7, the machine frame 1 moves on the base 2, the two forming roller systems 6 perform shape-following rolling on two side edges of the blank to realize rolling deformation, the electroplasticity and rolling technology are combined, compared with the punching, the machine frame has the advantages that equipment required by punching is small, heating procedures and energy consumption caused by forming in a heat state are omitted, the requirement on the plasticity of the material is low, equipment load is reduced, energy consumption and cost are reduced, and the metal difficult to deform is used for forming the parts with the complicated sections.
Specifically, fixedly between lower mould 4 and the frame 1 be provided with first insulating part, avoid frame 1 electrified, lead to personnel's mistake to touch, produce the incident.
Specifically, the electrically-assisted variable cross-section roll forming device further comprises: and a lifting mechanism 8.
The fixed end of the lifting mechanism 8 is fixedly connected with the frame 1, and the action end of the lifting mechanism 8 is connected with the upper die 3.
When the blank 7 is formed, the lifting mechanism 8 is started, the action end of the lifting mechanism 8 drives the upper die 3 to move towards the lower die 4 to clamp the blank 7, and meanwhile, if the part has a change in the depth direction, the upper die 3 and the lower die 4 can press the bottom surface shape of the part.
In the present embodiment, the lifting mechanism 8 may be a hydraulic cylinder.
A second insulating part is fixedly arranged between the action end of the lifting mechanism 8 and the upper die 3, so that the phenomenon that the frame 1 is electrified, personnel touch the frame by mistake and safety accidents are caused is avoided.
Specifically, a wedge-shaped block is fixedly arranged on the base 2; a wedge-shaped groove is fixedly arranged on the frame 1, and a wedge block is embedded into the wedge-shaped groove and is positioned through the wedge block.
The machine frame 1 can slide on the wedge block through the wedge-shaped groove, and the action of the machine frame 1 on the base 2 is realized.
Specifically, the forming roll system 6 includes: a supporting seat 6-1, a position adjusting mechanism 6-2, a connecting seat 6-3 and a press roller 6-4.
The fixed end of the position adjusting mechanism 6-2 is fixedly arranged on the supporting seat 6-1, and the action end of the position adjusting mechanism 6-2 is hinged with the connecting seat 6-3.
The press roller 6-4 is rotatably arranged on the connecting base 6-3.
The press roller 6-4 is connected with the negative pole of the pulse power supply 5.
Referring to fig. 4, the position adjustment mechanism 6-2 includes: at least six driving motors and at least six ball screws.
The six driving motors correspond to the at least six ball screws one by one, the fixed ends of the driving motors are fixedly connected with the supporting seat, and the action ends of the driving motors are fixedly connected with the corresponding ball screws.
At least three hinge points are arranged on the end surface of the connecting seat 6-3 facing the supporting seat 6-1 in a staggered manner.
Every two ball screws in at least six ball screws are hinged with a hinged point.
The support bases 6-1 of the two forming roller systems 6 are respectively placed on two sides of the rack 1, according to the shape of a part, the rolling angle of the forming roller system 6 and the space motion parameter of the forming roller system 6 of the pass are set through programming, the rack 1 drives a corresponding ball screw to act along the motion parameter of the base 2, the ball screw drives the connection bases 6-3 to realize the action of six spatial degrees of freedom, and then the connection bases 6-3 drive the compression rollers 6-4 to act to accurately roll the side edge of the blank 7, so that the multi-pass incremental forming can be realized, and the shape and the size of the formed part are more diversified and flexible.
According to the shape of the part, the frame 1 acts on the base 2, so that the upper die 3, the lower die 4 and the blank 7 can reciprocate along the length direction of the part, and the part is rolled in a multi-pass shape following manner by matching with the rolling action of the two forming roller systems 6.
In the present embodiment, a form is adopted in which the driving motor drives the ball screw, and the function thereof is to ensure accuracy.
The connecting seat 6-3 includes: support plates 6-31, third insulating members 6-32, support columns 6-33, and connecting plates 6-34.
The third insulating part 6-32 is fixedly connected with the end face of the supporting plate departing from the position adjusting mechanism 6-2, so that the situation that personnel touch by mistake and safety accidents are caused due to the fact that the supporting seat 6-1 is electrified is avoided.
In the present embodiment, the first, second, and third insulating members 6 to 32 may be made of a rubber sheet.
The first ends of the supporting columns 6-33 are fixedly connected with the third insulating parts 6-32, and the second ends of the supporting columns 33 are fixedly connected with the connecting plates 6-34. Wherein, an included angle is formed between the connecting plates 6-34 and the third insulating parts 6-32, so that the blank 7 can be pressed by the press roller 6-4, and the blank 7 is convenient to form.
The connecting plates 6 to 34 are rotatably provided with the nip rollers 6 to 5, and in the present embodiment, the distance between the nip rollers 6 to 5 of the forming roller system 6 is equal to the width ± 0.1 to 03mm of the blank 7, so that the blank 7 can be held during the running rolling of the blank 7, the stability of the blank 7 can be ensured, and wrinkles generated during the deformation of the blank 7 can be suppressed.
Specifically, the current density of the pulse power supply is in the range of 0-35A.mm-2Duty ratio in the range of 0-100 percent, the pulse frequency range is 0-999Hz, and the current parameters, the frequency parameters and the electrifying time which are beneficial to changing the material can be selected according to the material of the blank 7.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. An electrically assisted variable cross-section roll forming apparatus comprising: the device comprises a frame, a base, an upper die, a lower die, a pulse power supply and two forming roller systems;
the frame is slidably arranged on the base;
the upper die is arranged on the rack in a lifting manner;
the lower die is fixedly arranged on the rack and is opposite to the upper die;
the frame is arranged between the two forming roller systems;
the positive pole of the pulse power supply is connected with the upper die and the lower die, and the negative pole of the pulse power supply is connected with the two forming roller systems.
2. An electrically assisted variable cross-section roll forming apparatus as claimed in claim 1, wherein:
a first insulating part is fixedly arranged between the lower die and the rack.
3. An electrically assisted variable cross-section roll forming device according to claim 1, further comprising: a lifting mechanism;
the fixed end of the lifting mechanism is fixedly connected with the rack, and the action end of the lifting mechanism is connected with the upper die.
4. An electrically assisted variable cross-section roll forming apparatus as claimed in claim 3, wherein:
and a second insulating part is fixedly arranged between the action end of the lifting mechanism and the upper die.
5. An electrically assisted variable cross-section roll forming apparatus as claimed in claim 1, wherein:
a wedge-shaped block is fixedly arranged on the base;
the frame is fixedly provided with a wedge-shaped groove, and the wedge block is embedded into the wedge-shaped groove.
6. An electrically assisted variable cross-section roll forming apparatus as claimed in claim 1, wherein the forming roll train comprises: the device comprises a supporting seat, a position adjusting mechanism, a connecting seat and a press roller;
the fixed end of the position adjusting mechanism is fixedly arranged on the supporting seat, and the action end of the position adjusting mechanism is hinged with the connecting seat;
the compression roller is rotatably arranged on the connecting seat;
the compression roller is connected with the negative electrode of the pulse power supply.
7. An electrically assisted variable cross-section roll forming apparatus according to claim 6, wherein the position adjusting mechanism comprises: at least six driving motors and at least six ball screws;
the six driving motors correspond to at least six ball screws one by one, the fixed ends of the driving motors are fixedly connected with the supporting seat, and the action ends of the driving motors are fixedly connected with the corresponding ball screws;
at least three hinge points are arranged on the end face, facing the supporting seat, of the connecting seat in a staggered manner;
and at least two ball screws in the six ball screws are hinged with one hinge point.
8. An electrically assisted variable cross-section roll forming device according to claim 6, wherein the connecting socket comprises: the supporting plate, the third insulating part, the supporting column and the connecting plate;
the third insulating part is fixedly connected with the end face, deviating from the position adjusting mechanism, of the supporting plate;
the first end of the supporting column is fixedly connected with the third insulating part, and the second end of the supporting column is fixedly connected with the connecting plate.
9. An electrically assisted variable cross-section roll forming apparatus as claimed in claim 8, wherein:
the connecting plate is rotatably provided with a clamping roller.
10. An electrically assisted variable cross-section roll forming apparatus as claimed in claim 1, wherein:
the range of the current density of the pulse power supply is 0-35A.mm-2The duty ratio range is 0-100%, and the pulse frequency range is 0-999 Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121147421.9U CN215314981U (en) | 2021-05-26 | 2021-05-26 | Electric auxiliary variable cross-section rolling forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121147421.9U CN215314981U (en) | 2021-05-26 | 2021-05-26 | Electric auxiliary variable cross-section rolling forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215314981U true CN215314981U (en) | 2021-12-28 |
Family
ID=79548427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121147421.9U Expired - Fee Related CN215314981U (en) | 2021-05-26 | 2021-05-26 | Electric auxiliary variable cross-section rolling forming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215314981U (en) |
-
2021
- 2021-05-26 CN CN202121147421.9U patent/CN215314981U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |