CN113333544A - Electric-assisted variable-section roll forming device and method - Google Patents
Electric-assisted variable-section roll forming device and method Download PDFInfo
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- CN113333544A CN113333544A CN202110578237.8A CN202110578237A CN113333544A CN 113333544 A CN113333544 A CN 113333544A CN 202110578237 A CN202110578237 A CN 202110578237A CN 113333544 A CN113333544 A CN 113333544A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims description 30
- 230000009471 action Effects 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910000712 Boron steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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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
- B21D22/02—Stamping using rigid devices or tools
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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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
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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
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
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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
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses an electrically-assisted variable cross-section rolling forming device and method, 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 and the electrically-assisted variable cross-section rolling forming method reduce equipment load, reduce energy consumption and cost, and enable the metal difficult to deform to form the part with the complex cross section.
Description
Technical Field
The invention relates to the technical field of metal plate forming, in particular to an electrically-assisted variable cross-section rolling forming device and method.
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 for plastic forming of the difficult-to-form metal complex components with high performance, low cost, high efficiency and flexibility are urgently sought and developed.
Disclosure of Invention
The invention provides an electrically-assisted variable cross-section rolling forming device and method, which solve or partially solve the technical problem of high equipment load requirement caused by forming parts by traditional stamping, hot forming, rolling and other modes in the prior art.
In order to solve the technical problem, the invention 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; 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-2The duty ratio range is 0-100%, and the pulse frequency range is 0-999 Hz.
Based on the same inventive concept, the application also provides an electrically-assisted variable cross-section rolling forming method, which comprises the following steps: placing the blank on a lower die, and enabling an upper die to act towards the lower die to clamp the blank to realize the forming of the bottom of the part; turning on a pulse power supply, wherein the pulse power supply supplies power to the upper die, the lower die and the two forming roller systems; the frame moves on the base, and the two forming roller systems roll the two side edges of the blank along with the shape, so that rolling deformation is realized.
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-2The duty ratio range is 0-100%, 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.
Based on the same inventive concept, the application also provides an electrically-assisted variable cross-section rolling forming method, which comprises the following steps:
the blank 7 is placed on the lower die 4, and the upper die 3 is moved toward the lower die 4 to clamp the blank 7, thereby realizing the bottom forming of the part.
And (3) turning on a pulse power supply 5, wherein the pulse power supply 5 supplies power to the upper die 3, the lower die 4 and the two forming roller systems 6.
The frame 1 moves on the base 2, and the two forming roller systems 6 roll the two side edges of the blank 7 along with the shape, so that rolling deformation is realized.
Specifically, the support seats 6-1 of the two forming roller systems 6 are respectively placed on two sides of the rack 1, according to the shape of the part, the rolling angle of the forming roller system 6 and the spatial motion parameters of the forming roller system 6 of the pass are set through programming, the rack 1 drives the corresponding ball screw to act along the motion parameters of the base 2 through the drive motor, the ball screw drives the connection seats 6-3 to realize the action of six spatial degrees of freedom, and then the connection seats 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.
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;
the connecting plate is rotatably provided with a clamping roller.
9. 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.
10. An electrically-assisted variable cross-section roll forming method based on the electrically-assisted variable cross-section roll forming device of claim 1, wherein the electrically-assisted variable cross-section roll forming method comprises:
placing the blank on a lower die, and enabling an upper die to act towards the lower die to clamp the blank to realize the forming of the bottom of the part;
turning on a pulse power supply, wherein the pulse power supply supplies power to the upper die, the lower die and the two forming roller systems;
the frame moves on the base, and the two forming roller systems roll the two side edges of the blank along with the shape, so that rolling deformation is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110578237.8A CN113333544A (en) | 2021-05-26 | 2021-05-26 | Electric-assisted variable-section roll forming device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110578237.8A CN113333544A (en) | 2021-05-26 | 2021-05-26 | Electric-assisted variable-section roll forming device and method |
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| CN113333544A true CN113333544A (en) | 2021-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116274548A (en) * | 2023-05-25 | 2023-06-23 | 合肥工业大学 | Material with double-side convex rib plates and electric auxiliary roll forming equipment and process thereof |
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| CN109365611A (en) * | 2018-10-10 | 2019-02-22 | 华南理工大学 | A kind of electric pulse auxiliary spin forming machine |
| CN109482690A (en) * | 2018-10-31 | 2019-03-19 | 南京航空航天大学 | A kind of electric current auxiliary rolling formation method of difficult-to-deformation material odd-shaped cross section pipe fitting |
| CN215314981U (en) * | 2021-05-26 | 2021-12-28 | 江汉大学 | Electric auxiliary variable cross-section rolling forming device |
Cited By (2)
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| CN116274548A (en) * | 2023-05-25 | 2023-06-23 | 合肥工业大学 | Material with double-side convex rib plates and electric auxiliary roll forming equipment and process thereof |
| CN116274548B (en) * | 2023-05-25 | 2023-07-21 | 合肥工业大学 | Material with double-side convex rib plates and electric auxiliary roll forming equipment and process thereof |
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