CN110860586A - Metal foil plate bending forming device and forming method - Google Patents
Metal foil plate bending forming device and forming method Download PDFInfo
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- CN110860586A CN110860586A CN201911103739.4A CN201911103739A CN110860586A CN 110860586 A CN110860586 A CN 110860586A CN 201911103739 A CN201911103739 A CN 201911103739A CN 110860586 A CN110860586 A CN 110860586A
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- 238000005452 bending Methods 0.000 title claims abstract description 60
- 239000011888 foil Substances 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 title claims abstract description 52
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims description 15
- 230000003213 activating effect Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 4
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
- B21D5/0209—Tools therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/70—Specific application
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention relates to a metal foil plate bending forming device; the device is used for being installed on an external device, the external device comprises a driving assembly, the device comprises a first forming member, a second forming member and an ultrasonic vibrator assembly connected with the driving assembly, a groove used for placing a target part to be formed is formed in one of the first forming member and the second forming member, the other one of the first forming member and the second forming member is connected with the ultrasonic vibrator assembly, and the driving assembly drives the ultrasonic vibrator assembly to further drive the first forming member or the second forming member to move until the first forming member or the second forming member is in contact with the target part to be formed so as to deform the target part to be formed. When the first forming piece and the second forming piece are matched with each other to extrude the metal foil, the ultrasonic vibrator assembly acts on the bending deformation piece, so that residual stress caused by non-uniform plastic deformation of a bending area can be reduced, and rebound is reduced; so that the target piece to be formed is uniformly plastically deformed, and the precision of the target piece to be formed in a bending mode is improved.
Description
Technical Field
The invention relates to a metal foil plate bending forming device and a foil plate bending forming method, and belongs to the field of metal processing.
Background
With the development of miniaturization and light weight of portable electronic products, higher requirements are put on the miniaturization of metal parts, and especially higher requirements are put on metal foil plate bending components with the thickness of less than 0.2 mm. However, due to the existence of obvious bending resilience, the precision of a metal foil plate bending component is difficult to guarantee, the bending resilience always troubles the bending forming of the metal foil plate, the existing calculation method is difficult to calculate accurately, and the optimization design is mainly carried out in a mode of combining an empirical formula with a test groping; the main reasons for the springback of the metal foil bending member are as follows: (1) when the thickness of the sheet is reduced below 0.2mm, the thickness of the metal foil plate approaches or even reaches the order of the grain size of the metal plate, and the plastic deformation behavior of the single grain dominates the bending deformation of the metal foil plate. From the angle of a crystal plastic deformation mechanism, the deformation of crystal grains is anisotropic, and the plastic deformation is extremely uneven, so that the thinner the plate thickness is, the larger the bending resilience is, and the more difficult the bending forming process design of the metal foil plate is; (2) due to the random distribution of the grain orientation, the position, the size, the shape and the like, the microstructure of each bending piece or bending structure is different, and the non-uniformity degree, the distribution and the like of plastic deformation are different, so that the rebound angle of each metal foil plate bending piece is different, the consistency of the metal foil plate bending piece is poor, the qualification rate of the metal foil plate component is low, and the large-scale commercial application of the miniature metal foil plate component is seriously restricted.
Disclosure of Invention
The invention aims to provide a device and a method for reducing the resilience of a metal foil plate bending member and improving the angle precision of a metal foil plate forming member.
In order to achieve the purpose, the invention provides the following technical scheme: a metal foil plate bending forming device is used for being installed on an external device and comprises a driving assembly, the metal foil plate bending forming device comprises a first forming piece, a second forming piece and an ultrasonic vibrator assembly connected with the driving assembly, a groove used for placing a target part to be formed is formed in one of the first forming piece and the second forming piece, the other of the first forming piece and the second forming piece is connected with the ultrasonic vibrator assembly, and the driving assembly drives the ultrasonic vibrator assembly to further drive the first forming piece or the second forming piece to move until the first forming piece or the second forming piece is in contact with the target part to be formed so as to deform the target part to be formed.
Further, the ultrasonic vibrator assembly comprises an ultrasonic vibrator fixing plate and an ultrasonic vibrator connected with the ultrasonic vibrator fixing plate, and one of the first forming member and the second forming member is connected with the ultrasonic vibrator.
Further, the metal foil plate bending device further comprises a first fixing plate for fixing the other one of the first forming member and the second forming member, and a guide assembly for connecting the first fixing plate and the ultrasonic vibrator assembly.
Further, the guide assembly comprises a guide shaft arranged on the first fixing plate and a linear bearing which is sleeved on the guide shaft and can move up and down along the guide shaft, and the linear bearing is connected with the ultrasonic vibrator fixing plate.
Further, the metal foil plate bending and forming device further comprises a second fixing plate, and the second fixing plate is connected with the ultrasonic vibrator fixing plate through a vertical plate.
Furthermore, the second fixing plate is also provided with a containing part corresponding to the position of the ultrasonic vibrator, and the containing part contains at least part of the ultrasonic vibrator.
Further, one of the first forming member and the second forming member is a male die, and the other of the first forming member and the second forming member is a female die provided with the groove, wherein the male die is provided with a protrusion which is matched with the groove to enable the target member to be formed to be in contact deformation.
Further, the bulge is provided with an arc surface facing the groove, and the bending angle of the arc surface is 90 degrees, and the fillet radius of the arc surface is 0.2 mm.
In order to achieve the above purpose, the invention provides the following technical scheme: a method of bending a metal foil sheet, the method comprising the steps of:
connecting the ultrasonic vibrator assembly with the driving assembly;
presetting the speed of the driving assembly and the working data of the ultrasonic vibrator assembly;
activating the driving assembly to drive the ultrasonic vibrator assembly, which in turn drives the first or second forming member to move, the first or second forming member contacting the target member to be formed to bend it until the lower surface of the target member to be formed contacts the inner wall of the groove.
Further, the working data of the ultrasonic vibrator comprises the working frequency and the amplitude of the ultrasonic vibrator, the working frequency range of the ultrasonic vibrator is 10-40Hz, and the amplitude range of the ultrasonic vibrator is 1-10 μm.
Further, the speed range of the driving assembly is 0.1-1 mm/min.
The invention has the beneficial effects that: the ultrasonic wave emitted by the ultrasonic vibrator is transmitted to the metal foil plate, so that the plastic deformation resistance of the metal foil plate is reduced, the bending deformation residual stress is reduced, and the local non-uniform plastic deformation is improved, so that the uniform plastic deformation of the metal foil plate is realized, and the precision of a metal foil plate bending forming piece is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a metal foil bending apparatus according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Referring to fig. 1, a bending apparatus for a metal foil plate according to a preferred embodiment of the present invention is configured to be mounted on an external apparatus, the external apparatus includes a driving assembly (not shown), the bending apparatus for a metal foil plate includes a first forming member 8, a second forming member 15, and an ultrasonic vibrator assembly 2 connected to the driving assembly, one of the first forming member 8 and the second forming member 15 is provided with a groove for placing a target member 16 to be formed, and the other of the first forming member 8 and the second forming member 15 is connected to the ultrasonic vibrator assembly 2. Wherein one of the first and second shaped members 8, 15 is a male die, and the other of the first and second shaped members 8, 15 is a female die 15 provided with the groove, which may be determined according to actual conditions. In the present exemplary embodiment, the first shaped part 8 is a punch 8 and the second shaped part 15 is a die 15. At this time, the driving assembly is connected with the first forming member 8, and the first forming member 8 is connected with the ultrasonic vibrator assembly 2; the male die 8 has a projection and the drive assembly drives the ultrasonic vibrator assembly 2 and thus the first shaped member 8 to move until the first shaped member 8 comes into contact with the target member to be formed 16 to deform it. In this embodiment, the arch has the orientation the arc surface that the recess set up, the bending angle of arc surface is 90 fillet radius and is 0.2mm to make final forming shape be bending angle 90, fillet radius is 0.2 mm. Indeed, in other embodiments, the arc surface of the protrusion may have other shapes, which is determined according to the actual situation and is not limited herein. The clearance between the male die 8 and the female die 15 can be determined according to the thickness and the bending size requirements of a target part 16 to be formed, and the device is particularly suitable for metal foil plates of 20-200 mu m copper alloy, stainless steel and the like.
Specifically, the ultrasonic vibrator assembly 2 includes an ultrasonic vibrator fixing plate 7 and an ultrasonic vibrator 201 connected to the ultrasonic vibrator fixing plate 7, and the first molding member 8 is connected to the ultrasonic vibrator 201 to move as a whole. The ultrasonic wave emitted by the ultrasonic vibrator component 2 is transmitted to the target piece 16 to be formed, so that the plastic deformation resistance of the target piece 16 to be formed is reduced, the bending deformation residual stress is reduced, and the local non-uniform plastic deformation is improved, so that the target piece 16 to be formed is uniformly plastically deformed, and the precision of a bending forming piece of the target piece 16 to be formed is improved.
Specifically, the bending apparatus for a metal foil plate further includes a first fixing plate 1 for fixing the first forming member 8, and a guide assembly 5 for connecting the first fixing plate 1 and the ultrasonic vibrator assembly 2, and the bending apparatus for a metal foil plate is fixed to an external device through the first fixing plate 1. The guide assembly 5 comprises a guide shaft 502 arranged on the first fixing plate 1 and a linear bearing 501 which is sleeved on the guide shaft 502 and can move up and down along the guide shaft 502, and the linear bearing 501 is connected with the ultrasonic vibrator fixing plate 7. The metal foil plate bending and forming device further comprises a second fixing plate 13, and the second fixing plate 13 is connected with the ultrasonic vibrator fixing plate 7 through a vertical plate. The second fixing plate 13 is movable together with the ultrasonic vibrator assembly 2 and guides the moving direction of the ultrasonic vibrator assembly 2. In this embodiment, a die fixing plate may be further disposed between the first fixing plate 1 and the die 15 for better fixing the die 15.
In order to reduce the overall height of the device, the second fixing plate 13 is further provided with a receiving portion 6 corresponding to the position of the ultrasonic transducer 201, and the receiving portion 6 receives at least a part of the ultrasonic transducer 201. As described above, the head of the ultrasonic vibrator 201 is housed in the housing 6, and the end thereof is connected to the punch 8, but the ultrasonic vibrator 201 may be entirely housed in the housing 6, so that the entire device is smaller in size, and is not particularly limited herein, depending on the actual situation.
The invention also provides the following technical scheme: a method for bending and forming metal foil plates utilizes the metal foil plate bending and forming device, and comprises the following steps:
connecting the ultrasonic vibrator assembly 2 with the driving assembly;
presetting the speed of the driving component and the working data of the ultrasonic vibrator component 2;
the driving assembly is activated to drive the ultrasonic vibrator assembly 2, the ultrasonic vibrator assembly 2 in turn drives the first forming member 8 or the second forming member 15 to move, the first forming member 8 or the second forming member 15 is contacted with the object to be formed 16 to bend it until the lower surface of the object to be formed 16 is contacted with the inner wall of the groove.
In the method, the ultrasonic waves emitted by the ultrasonic vibrator component 2 act on the target piece 16 to be formed, so that the resistance to plastic deformation of the target piece 16 to be formed is reduced, the residual stress of bending deformation is reduced, and local non-uniform plastic deformation is improved, so that the target piece 16 to be formed is uniformly plastically deformed, and the precision of the target piece 16 to be formed in a bending way is improved.
Specifically, the working data of the ultrasonic vibrator 201 includes the working frequency and amplitude of the ultrasonic vibrator 201, the working frequency range of the ultrasonic vibrator 201 is 10-40Hz, and the amplitude range of the ultrasonic vibrator 201 is 1-10 μm. In the method, the ultrasonic vibrator 201 emits the ultrasonic waves of the type, so that the target piece 16 to be formed has the advantages of uniform and consistent bending plastic deformation.
Specifically, the speed of the drive assembly ranges from 0.1 to 1 mm/min. In the present method, the target 16 to be formed is preferably a copper alloy foil plate or a stainless steel foil plate. The ultrasonic vibrator 201 emits ultrasonic waves, and the ultrasonic waves are continuously emitted for 10-200 seconds after the first forming member 8 and the second forming member 15 are closed, so that the target piece 16 to be formed is bent and deformed fully, the ultrasonic vibration is facilitated to act on the target piece 16 to be formed, the residual stress caused by the non-uniform plastic deformation of the target piece 16 to be formed can be reduced, and the rebound is further reduced.
The preferred operation of the metal foil sheet bending apparatus is: firstly, connecting the ultrasonic vibrator assembly 2 with the driving assembly; the movement speed of the driving assembly is set and the displacement is set, the movement speed is preferably 0.1-1mm/min, the displacement is set according to the size of the target piece 16 to be formed, the target piece 16 to be formed is placed in the groove in advance, then, the driving assembly is started to drive the ultrasonic vibrator assembly 2, and the ultrasonic vibrator assembly 2 drives the first forming piece 8 or the second forming piece 15 to move, so that the first forming piece 8, the target piece 16 to be formed and the second forming piece 15 are in close contact. Until the first forming member 8 or the second forming member 15 reaches a predetermined displacement amount, the driving assembly stops moving and stays for a period of time so that the target member 16 to be formed is sufficiently bent into a plate shape, preferably for 10 to 200 seconds, and secondly, the ultrasonic vibrator assembly 2 continues to emit ultrasonic waves having a frequency of 10 to 40kHz and an amplitude of 1 to 10 μm at the time of stopping of the driving assembly, which type of ultrasonic waves can reduce residual stress caused by non-uniform plastic deformation of the target member 16 to be formed, further reducing spring back so that the target member 16 to be formed is sufficiently bent into a plate shape. The ultrasonic vibrator assembly 2 may also be operated before, during or after the drive assembly has moved to a set displacement, as desired. The amplitude can be adjusted steplessly by adjusting the working current of the driving power supply of the ultrasonic vibrator assembly 2, and other amplitudes can be adopted according to the requirement.
And finally, stopping the work of the ultrasonic vibrator assembly 2, moving the driving assembly upwards to return, separating the first forming piece 8 from the second forming piece 15, relieving the extrusion of the target piece 16 to be formed, and taking out the target piece 16 to be formed. And finishing the bending forming process of the foil plate assisted by the ultrasonic vibration. The target 16 to be formed may be any metal material or a composite plate thereof, and the target 16 to be formed is preferably a copper alloy foil plate or a stainless steel foil plate. The plate thickness of the target piece 16 to be formed is selected according to the requirements, for example 20 to 200 μm.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A metal foil plate bending forming device is used for being installed on an external device, the external device comprises a driving assembly, and the metal foil plate bending forming device is characterized by comprising a first forming piece, a second forming piece and an ultrasonic vibrator assembly connected with the driving assembly, a groove used for placing a target piece to be formed is formed in one of the first forming piece and the second forming piece, the other of the first forming piece and the second forming piece is connected with the ultrasonic vibrator assembly, and the driving assembly drives the ultrasonic vibrator assembly to further drive the first forming piece or the second forming piece to move until the first forming piece or the second forming piece is in contact with the target piece to be formed so as to deform the target piece.
2. The metal foil plate bending apparatus of claim 1, wherein the ultrasonic vibrator assembly comprises an ultrasonic vibrator fixing plate and an ultrasonic vibrator connected to the ultrasonic vibrator fixing plate, and one of the first forming member and the second forming member is connected to the ultrasonic vibrator.
3. The metal foil plate bending apparatus of claim 2, further comprising a first fixing plate for fixing the other of the first forming member and the second forming member, and a guide assembly for connecting the first fixing plate and the ultrasonic vibrator assembly.
4. The metal foil plate bending apparatus of claim 3, wherein the guiding assembly comprises a guiding shaft disposed on the first fixing plate and a linear bearing disposed on the guiding shaft and capable of moving up and down along the guiding shaft, and the linear bearing is connected to the fixing plate of the ultrasonic vibrator.
5. The metal foil plate bending apparatus of claim 3, further comprising a second fixing plate, wherein the second fixing plate is connected to the fixing plate of the ultrasonic vibrator through a vertical plate.
6. The metal foil plate bending apparatus according to claim 5, wherein a receiving portion corresponding to the position of the ultrasonic vibrator is further provided in the second fixing plate, and the receiving portion receives at least a part of the ultrasonic vibrator.
7. The metal foil plate bending apparatus according to claim 1, wherein one of said first forming member and said second forming member is a male die, and the other of said first forming member and said second forming member is a female die provided with said groove, said male die having a projection which cooperates with said groove to deform said object to be formed in contact therewith.
8. The metal foil bending apparatus of claim 7, wherein the projection has a circular arc surface disposed toward the groove, the circular arc surface having a bending angle of 90 ° and a radius of 0.2 mm.
9. A method of bending a metal foil sheet using the metal foil sheet bending apparatus according to any one of claims 1 to 8, characterized by comprising the steps of:
connecting the ultrasonic vibrator assembly with the driving assembly;
presetting the speed of the driving assembly and the working data of the ultrasonic vibrator assembly;
activating the driving assembly to drive the ultrasonic vibrator assembly, which in turn drives the first or second forming member to move, the first or second forming member contacting the target member to be formed to bend it until the lower surface of the target member to be formed contacts the inner wall of the groove.
10. The method of claim 9, wherein the operating data of the ultrasonic vibrator comprises an operating frequency and an amplitude of the ultrasonic vibrator, the operating frequency of the ultrasonic vibrator is in a range of 10-40Hz, and the amplitude of the ultrasonic vibrator is in a range of 1-10 μm.
11. The method of bend forming metal foil sheet of claim 9 wherein the speed of the drive assembly is in the range of 0.1 to 1 mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911103739.4A CN110860586A (en) | 2019-11-13 | 2019-11-13 | Metal foil plate bending forming device and forming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911103739.4A CN110860586A (en) | 2019-11-13 | 2019-11-13 | Metal foil plate bending forming device and forming method |
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| CN110860586A true CN110860586A (en) | 2020-03-06 |
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| CN201911103739.4A Pending CN110860586A (en) | 2019-11-13 | 2019-11-13 | Metal foil plate bending forming device and forming method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111229880A (en) * | 2020-03-07 | 2020-06-05 | 赵丽英 | Sheet metal channel-section steel mechanism of buckling |
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| CN107971381A (en) * | 2017-11-28 | 2018-05-01 | 哈尔滨工业大学 | The ultrasonic vibration of thin-wall complicated curved surface micro-structure components aids in micro- bulging device and method |
| CN108405727A (en) * | 2018-03-21 | 2018-08-17 | 哈尔滨工业大学 | A kind of sheet metal pulse current auxiliary Micro-bending device and method |
| CN108555132A (en) * | 2018-05-18 | 2018-09-21 | 沈阳航空航天大学 | The method and device of ultrasonic vibration assistant metal sheet material forming under thermal environment |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1315486A (en) * | 1970-06-18 | 1973-05-02 | United Glass Ltd | Sealing containers |
| JP2510178B2 (en) * | 1987-01-12 | 1996-06-26 | 株式会社 アマダ | Folding machine |
| CN107971381A (en) * | 2017-11-28 | 2018-05-01 | 哈尔滨工业大学 | The ultrasonic vibration of thin-wall complicated curved surface micro-structure components aids in micro- bulging device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111229880A (en) * | 2020-03-07 | 2020-06-05 | 赵丽英 | Sheet metal channel-section steel mechanism of buckling |
| CN111229880B (en) * | 2020-03-07 | 2021-09-28 | 抚州市海利金属科技有限公司 | Sheet metal channel-section steel mechanism of buckling |
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Application publication date: 20200306 |