CN108188247A - A kind of subregion soft mode regulation and control plank precision forming device and method - Google Patents
A kind of subregion soft mode regulation and control plank precision forming device and method Download PDFInfo
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- CN108188247A CN108188247A CN201810180705.4A CN201810180705A CN108188247A CN 108188247 A CN108188247 A CN 108188247A CN 201810180705 A CN201810180705 A CN 201810180705A CN 108188247 A CN108188247 A CN 108188247A
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- core assembly
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 42
- WKPSFPXMYGFAQW-UHFFFAOYSA-N iron;hydrate Chemical compound O.[Fe] WKPSFPXMYGFAQW-UHFFFAOYSA-N 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 5
- 239000000306 component Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000000518 rheometry Methods 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
-
- 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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/021—Deforming sheet bodies
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The present invention discloses a kind of subregion soft mode regulation and control plank precision forming device and method, belong to sheet material forming technical field, magnetorheological fluid is injected by plunger case, forcing press applies pressure-pad-force, so as to simplify the configuration requirement to forcing press, the location conflicts of mold, flange fixing installation and magnetorheological fluid injection cylinder are avoided, reduce the difficulty of mold assembling；In addition, pass through the application of built-up coil and core assembly, the distance between electric current and iron core is adjusted in forming process, change the magnetic field intensity of compartmentalization, the soft mode performance in differing formed region is made to adapt to the stress state needs of plank, promote the flowing of material, the Precise control of forming process is realized, so as to improve sheet material forming and part forming quality.This method has great application value in the precision form of complicated shape thin-wall member.
Description
Technical field
The present invention relates to sheet material forming technical field, specially a kind of subregion soft mode regulation and control plank precision forming device and
Method.
Background technology
With the fast development in the fields such as Aeronautics and Astronautics and automobile, sheet metal part manufacture is gradually to lightweight, high-precision
The trend development of degree and low cost.The difficulty shaped due to this kind of component with complex-shaped, thin-walled, integral forming, material difficulty
Point, conventional forming techniques are easy to uneven deformation, rupture or ridging defect occur, constrain the extensive use of such component.
Plank magnetorheological fluid flexible die forming method is a kind of new flexible die forming method, it uses intellectual material --- magnetic current
Become liquid, provide magnetic field by coil or permanent magnet etc., change the characteristic of magnetorheological fluid in forming process, make soft mode mechanical property
The needs of Sheet Metal Forming are more suitable for, so as to improve the forming quality of the formability of plank and part.
Patent of invention ZL.201210092979.0 " a kind of plank magnetorheological fluid flexible die forming device and method " is proposed and is adopted
The device and method of sheet material forming is carried out with magnetorheological fluid soft mode, forming process is：Plank to be formed is clamped in cavity plate
Upper surface and magnetorheological fluid hold between the lower surface of frame；Fill magnetorheological fluid in first inner chamber, in forming process, the first magnetic current
Become liquid injection cylinder and the second magnetorheological fluid injection cylinder injects magnetorheological fluid into first inner chamber；According to the shape of plank to be formed and
Soft mode action mode determines working region magnetic field intensity B；Solenoid with DC power supply is connect, makes magnetic current by adjusting electric current
The magnetic field intensity for becoming liquid region changes, and plank to be formed is made to shape required shape under the change states of matter of magnetorheological fluid
Shape；Magnetorheological fluid is held frame to open, the plank after forming is taken out.But it using the above method in Sheet Metal Forming, is relating to
And injection, the loading of pressure-pad-force and the loading in magnetic field to magnetorheological fluid, it easily causes mold, flange fixing installation and magnetorheological fluid and notes
Enter the location conflicts of cylinder, increase the difficulty of device assembling；In addition, this method can only apply uniform magnetic field, shape is answered
Miscellaneous, the part that different zones deformation extent differs greatly is difficult to the magnetic field of applying zone, and then is difficult to realize forming process
Precise control.
Invention content
The purpose of the present invention is poor to soft mode performance zonesization in complicated shape part magnetorheological fluid flexible die forming to solve
Different requirement using built-up coil and assembling iron core, provides a kind of subregion soft mode regulation and control plank precision forming device and method.
The present invention is to be achieved through the following technical solutions：
A kind of subregion soft mode regulates and controls plank precision forming device, including the first core assembly, cavity plate, first coil, the
Two coil, plank, magnetorheological fluid, plunger case, plunger, medium cylinder, the second core assembly；
The medium cylinder bottom lock, top are provided with opening, and plunger case is connected with medium cylinder, and plunger is mounted on plunger case
Interior, magnetorheological fluid is filled in the inner cavity of medium cylinder and plunger case, and cavity plate is located above medium cylinder, and plank to be formed is clamped in
Between cavity plate and medium cylinder；
First coil is provided on the cavity plate, the second coil is located at below medium cylinder to be correspondingly arranged with first coil, the
One core assembly is located at the inside of first coil, and the second core assembly is located at the inside of coil.
Optionally, first core assembly includes the first cylinder iron core and several first annular iron cores, and described first
Cylinder iron core and the coaxial arrangement of first annular iron core, second core assembly include the second cylinder iron core and several second rings
Shape iron core, the second cylinder iron core and the coaxial arrangement of the second annular core.
Optionally, including two plunger cases and two plungers, two plunger cases are respectively positioned at the both sides of medium cylinder and medium
Cylinder connects, and two plungers are separately mounted in plunger case.
Optionally, the circular hole for being connected with plunger case is provided on the medium cylinder side wall, the Circularhole diameter is 10
~15mm.
Based on a kind of manufacturing process of subregion soft mode regulation and control plank precision forming device provided by the invention, including following
Step：
Magnetorheological fluid is injected into the inner cavity of medium cylinder by step 1, makes dielectric surface and upper level, by plate to be formed
Material is placed between medium cylinder upper surface and cavity plate lower surface, and applies pressure-pad-force F, and plank to be formed is clamped；
Step 2, to first coil and the second coil input current, the second core assembly holding position is constant, adjusts first
The distance between core assembly and the second core assembly, to adjust the magnetic field intensity of shaped region；
Step 3 applies speed V to plunger1, plank is made to be deformed under the effect of magnetorheological hydraulic power；
Step 4 applies anti-speed degree V to plunger2, magnetorheological fluid is made to be back in plunger case, cavity plate 3 is opened, after forming
Part take out.
Optionally, in step 2 the distance between the first core assembly and the second core assembly adjustable range for 30mm~
80mm。
Optionally, 0 ＜ B ＜ 0.5T of field region intensity described in step 2.
Optionally, in step 3 plunger speed V1Ranging from 0.2mm/s~0.4mm/s.
Optionally, in step 4 plunger anti-speed degree V2Ranging from 0.1mm/s~0.2mm/s.
Optionally, the magnetorheological fluid 6 described in step 1 includes hydroxy iron powder and silicone oil, wherein, hydroxy iron powder content is
35%~48%.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of subregion soft mode regulation and control plank precision forming device provided by the invention and method, inject magnetic by plunger case
Rheology liquid, forcing press apply pressure-pad-force, so as to simplify the configuration requirement to forcing press, avoid mold, flange fixing installation and magnetic
Rheology liquid injects the location conflicts of cylinder, reduces the difficulty of mold assembling；In addition, by built-up coil and core assembly should
With the distance in forming process between adjusting electric current and iron core changes the magnetic field intensity of compartmentalization, makes the soft of differing formed region
Mould performance adapts to the stress state needs of plank, promotes the flowing of material, realizes the Precise control of forming process, so as to improve
Sheet material forming and part forming quality.This method has in the precision form of complicated shape thin-wall member greatly applies valency
Value.
Description of the drawings
Fig. 1 be using subregion soft mode of the present invention regulate and control that plank accurate forming method treats that shaped sheet is formed just
Overall structural main section view during beginning state；
Fig. 2 is the overall structural main section view of present invention when being formed into certain phase；
In figure：1-1. the first cylinder iron cores, the first annular iron cores of 2-1., 3. cavity plates, 4-1. first coils, 5. planks, 6.
Magnetorheological fluid, the first plunger cases of 7-1., the second plunger cases of 7-2., the first sealing rings of 8-1., the second sealing rings of 8-2., 9-1. first
Plunger, the second plungers of 9-2., 10. medium cylinders, 1-2 the second cylinder iron cores, the second annular cores of 2-2., the second coils of 4-2..
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Embodiment one
A kind of subregion soft mode regulates and controls plank precision forming device, including the first core assembly, cavity plate 3, first coil 4-
1st, the second coil 4-2, plank 5, magnetorheological fluid 6, plunger case, plunger, medium cylinder 10, the second core assembly；
10 bottom lock of medium cylinder, top are provided with opening, and plunger case is connected with medium cylinder 10, and plunger is mounted on plunger case
Interior, magnetorheological fluid 6 is filled in the inner cavity of medium cylinder 10 and plunger case, and cavity plate 3 is located at 10 top of medium cylinder, plank quilt to be formed
It is clamped between cavity plate 3 and medium cylinder 10；
First coil 4-1, the second coil 4-2 are provided on cavity plate 3 and is located at corresponding with first coil 4-1 below medium cylinder set
It puts, the first core assembly is located at the inside of first coil 4-1, and the second core assembly is located at the inside of coil 4-2.
First core assembly includes the first cylinder iron core 1-1 and several first annular iron core 2-1, the first cylinder iron core 1-
1 and first annular iron core 2-1 is coaxially disposed, and second core assembly includes the second cylinder iron core 1-2 and several second rings
Shape iron core 2-2, the second cylinder iron core 1-2 and the second annular core 2-2 are coaxially disposed.
A kind of subregion soft mode regulation and control plank precision forming device provided in an embodiment of the present invention can include two plungers
Cylinder and two plungers, two plunger cases connect respectively positioned at the both sides of medium cylinder with medium cylinder, and two plungers are separately mounted to column
In plug cylinder.The circular hole for being connected with plunger case is provided on 10 side wall of medium cylinder, the Circularhole diameter is 10~15mm.
A kind of manufacturing process of subregion soft mode regulation and control plank precision forming device, includes the following steps：
Magnetorheological fluid is injected into the inner cavity of medium cylinder 10, makes dielectric surface and upper level by step 1, will be to be formed
Plank 5 is placed between 3 lower surface of 10 upper surface of medium cylinder and cavity plate, and applies pressure-pad-force F, and plank 5 to be formed is clamped；
Step 2, to first coil 4-1 and the second coil 4-2 input currents, the second core assembly holding position is constant, adjusts
The distance between the first core assembly and the second core assembly are saved, to adjust the magnetic field intensity of shaped region；
Step 3 applies speed V to plunger1, plank is made to be deformed under the effect of magnetorheological hydraulic power；
Step 4 applies anti-speed degree V to plunger2, magnetorheological fluid is made to be back in plunger case, cavity plate 3 is opened, after forming
Part take out.
The distance between the first core assembly and the second core assembly adjustable range are 30mm~80mm magnetic fields in step 2
0 ＜ B ＜ 0.5T of field strength.
The speed V of plunger in step 31Ranging from 0.2mm/s~0.4mm/s.
The anti-speed degree V of plunger in step 42Ranging from 0.1mm/s~0.2mm/s.
Magnetorheological fluid 6 described in step 1 includes hydroxy iron powder and silicone oil, wherein, hydroxy iron powder content for 35%~
48%.
Embodiment two
As shown in Figure 1, a kind of subregion soft mode regulation and control plank precision forming device, including the first cylinder iron core 1-1, first
Annular core 2-1, cavity plate 3, first coil 4-1, plank 5, magnetorheological fluid 6, the first plunger case 7-1, the first sealing ring 8-1,
One plunger 9-1, medium cylinder 10, the second cylinder iron core 1-2, the second annular core 2-2 and the second coil 4-2；
10 bottom lock of medium cylinder, opened upper end, and flanging muscle is provided with, there are two circular hole on side wall, with plunger case 7-1
It is connected with 7-2.Cavity plate 3 is located at 10 top of medium cylinder, and plank to be formed is clamped between cavity plate 3 and medium cylinder 10, in cavity plate 3
Portion opens up annular groove, and first coil 4-1, the second coil 4-2 placement corresponding with first coil 4-1 are placed in inside, positioned at medium cylinder
Lower section.First cylinder iron core 1-1 is located inside first annular iron core 2-1, and the two is placed in inside cavity plate 3.Second cylinder iron core 1-2
It is located inside coil 4-2 with the second annular core 2-2.The two is put in pairs with the first cylinder iron core 1-1 and first annular iron core 2-1
It is placed in 10 lower section of medium cylinder.Magnetorheological fluid 6 is located in the inner cavity of medium cylinder and plunger case composition.First plunger 9-1 is located at first
Inside plunger case 7-1, the two contact surface is provided with the first sealing ring 8-1.
Wherein, cavity plate 3, the first plunger case 7-1 and the second plunger case 7-2 are made by non-magnetic austenitic stainless steel.Choosing
Selecting the material can make the shaped region magnetic line of force by magnetorheological fluid, the performance of magnetorheological fluid be made to change completely.
Wherein, connected on 10 side wall of medium cylinder with the first plunger case 7-1 and the second plunger case 7-2 Circularhole diameter for 10~
15mm.The flowing loading speed of magnetorheological fluid 6 can be ensured by selecting the bore dia, and can guarantee that the intensity of medium cylinder 10 meets
Requirement.
It should be noted that the first core assembly provided in an embodiment of the present invention and the second annular core component can be same
The core assembly of thimble shape core assembly or multiple cylindrical member combinatorial compounds, according to different molding demands, selection
Core assembly of different shapes, to adjust the magnetic field intensity of shaping position everywhere.
A kind of subregion soft mode regulates and controls plank accurate forming method, is realized by following steps：
Magnetorheological fluid is injected into the inner cavity of medium cylinder 10, makes dielectric surface and upper level by step 1, will be to be formed
Plank 5 is placed between 3 lower surface of 10 upper surface of medium cylinder and cavity plate, and applies pressure-pad-force F, and plank 5 to be formed is clamped；
Step 2, to coil 4-1 and 4-2 input current, cylinder iron core 1-2 and annular core 2-2 holding positions are constant, adjust
The distance between the first cylinder iron core 1-1, the second cylinder iron core 1-2 and the first circle ring iron core 2-1, the second circle ring iron core 2-2 are saved,
It is respectively B that shaped region is made, which magnetic field intensity occur,1And B2Two regions；
Step 3 applies speed V respectively to the first plunger 9-1 and the second plunger 9-21, make plank in magnetorheological fluid pressure
Effect is lower to be deformed.
Step 4 applies anti-speed degree V respectively to the first plunger 9-1 and the second plunger 9-22, magnetorheological fluid is made to be back to column
In plug cylinder 7-1 and 7-2, cavity plate 3 is opened, the part after forming is taken out.
Wherein, the distance between cylinder iron core 1-1,1-2 and circle ring iron core 2-1,2-2 adjustable range are 30mm in step 2
~80mm.The adjustable range can ensure needs of the shaped region to magnetic field intensity.
The B of field region intensity described in step 21And B2, in forming 0 ＜ B of initial stage1＜ B2＜ 0.5T, after forming 0 ＜ of phase
B2＜ B1＜ 0.5T.Using such method of adjustment, forming initial stage edge magnetorheological fluid can be made to level off to approximate solid-state, promoted
Die entrance material center region flowing nearby；The later stage is shaped, central area magnetic field bigger is concentrated part deformation, obtained
The deformation extent of bigger.Entire forming process material is made to flow more reasonable in this way, improves the formability of plank.
The speed V of first plunger 9-1 and the second plunger 9-2 in step 31Ranging from 0.2mm/s~0.4mm/s.Using this
The magnetorheological fluid injection rate of sample can make the deformation of plank be maintained at preferable velocity interval.
The anti-speed degree V of first plunger 9-1 and the second plunger 9-2 in step 42Ranging from 0.1mm/s~0.2mm/s.Using
To avoid the part after forming secondary deformation can occur for magnetorheological fluid discharge rate slower in this way.
6 main component of magnetorheological fluid described in step 1 is hydroxy iron powder and silicone oil, iron content ranging from 35%~
48%.There is preferable property regulation range using the magnetorheological fluid of this kind of component content.
The specific embodiment lifted of the present invention is only the annotation to the invention spirit, person skilled in the art of the present invention
It can modify to the specific embodiment of description or similar method substitutes, without departing from the spirit of the present invention.
Claims (10)
1. a kind of subregion soft mode regulates and controls plank precision forming device, which is characterized in that including the first core assembly, cavity plate (3),
First coil (4-1), the second coil (4-2), magnetorheological fluid (6), plunger case, plunger, medium cylinder (10), the second core assembly；
Medium cylinder (10) bottom lock, top are provided with opening, and plunger case is connected with medium cylinder (10), and plunger is mounted on column
In plug cylinder, magnetorheological fluid (6) is filled in medium cylinder (10) and the inner cavity of plunger case, cavity plate (3) above the medium cylinder (10),
Plank (5) to be formed is clamped between cavity plate (3) and medium cylinder (10)；
First coil (4-1) is provided on the cavity plate (3), the second coil (4-2) is positioned at medium cylinder (10) lower section and First Line
Circle (4-1) is correspondingly arranged, and the first core assembly is located at the inside of first coil (4-1), and the second core assembly is located at the second coil
The inside of (4-2).
2. a kind of subregion soft mode regulation and control plank precision forming device as described in claim 1, which is characterized in that described first
Core assembly includes the first cylinder iron core (1-1) and several first annular iron cores (2-1), the first cylinder iron core (1-1)
With first annular iron core (2-1) be coaxially disposed, second core assembly include the second cylinder iron core (1-2) and several second
Annular core (2-2), the second cylinder iron core (1-2) and the second annular core (2-2) coaxial arrangement.
3. a kind of subregion soft mode regulation and control plank precision forming device as described in claim 1, which is characterized in that including two
Plunger case and two plungers, two plunger cases connect respectively positioned at the both sides of medium cylinder with medium cylinder (10), two plunger difference
In plunger case.
A kind of 4. subregion soft mode regulation and control plank precision forming device as claimed in claim 3, which is characterized in that the medium
The circular hole for being connected with plunger case is provided on cylinder (10) side wall, the Circularhole diameter is 10~15mm.
5. based on a kind of forming of subregion soft mode regulation and control plank precision forming device any one of Claims 1-4
Method, which is characterized in that include the following steps：
Magnetorheological fluid (6) is injected into the inner cavity of medium cylinder (10) by step 1, and plank to be formed (5) is placed in medium cylinder
(10) between upper surface and cavity plate (3) lower surface, and apply pressure-pad-force F, plank to be formed (5) is clamped；
Step 2, to first coil (4-1) and the second coil (4-2) input current, the second core assembly holding position is constant, adjusts
The distance between the first core assembly and the second core assembly are saved, to adjust the magnetic field intensity of shaped region；
Step 3 applies speed V to plunger1, plank is made to be deformed under the effect of magnetorheological hydraulic power；
Step 4 applies anti-speed degree V to plunger2, magnetorheological fluid is made to be back in plunger case, cavity plate (3) is opened, after forming
Plank takes out.
6. method as claimed in claim 5, which is characterized in that in step 2 between the first core assembly and the second core assembly
Apart from adjustable range be 30mm~80mm.
7. method as claimed in claim 5, which is characterized in that 0 ＜ B ＜ 0.5T of field region intensity in step 2.
8. method as claimed in claim 5, which is characterized in that the speed V of plunger in step 31Ranging from 0.2mm/s~
0.4mm/s。
9. method as claimed in claim 5, which is characterized in that the anti-speed degree V of plunger in step 42Ranging from 0.1mm/s~
0.2mm/s。
10. method as claimed in claim 5, which is characterized in that magnetorheological fluid (6) described in step 1 including hydroxy iron powder and
Silicone oil, wherein, hydroxy iron powder content is 35%~48%.
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| CN201810180705.4A CN108188247B (en) | 2018-03-05 | 2018-03-05 | A kind of subregion soft mode regulation plate precision forming device and method |
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| CN201810180705.4A CN108188247B (en) | 2018-03-05 | 2018-03-05 | A kind of subregion soft mode regulation plate precision forming device and method |
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| CN108188247B CN108188247B (en) | 2019-08-06 |
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| CN109746302A (en) * | 2019-02-22 | 2019-05-14 | 河南科技大学 | Magneto-rheological combined soft mode and sheet material forming method based on magneto-rheological combined soft mode |
| CN109759491A (en) * | 2019-03-04 | 2019-05-17 | 燕山大学 | A kind of the pipe fitting swelling pressure forming device and process of magneto-rheological grease auxiliary |
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