CN108043941A - A kind of diaphragm of rubber hydraulic vibration building mortion and its processing technology - Google Patents
A kind of diaphragm of rubber hydraulic vibration building mortion and its processing technology Download PDFInfo
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- CN108043941A CN108043941A CN201711282365.8A CN201711282365A CN108043941A CN 108043941 A CN108043941 A CN 108043941A CN 201711282365 A CN201711282365 A CN 201711282365A CN 108043941 A CN108043941 A CN 108043941A
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- hydraulic
- vibration
- diaphragm
- rubber
- hydraulic cylinder
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/10—Stamping using yieldable or resilient pads
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F3/00—Changing the physical structure of non-ferrous metals or alloys by special physical methods, e.g. treatment with neutrons
Abstract
The invention discloses a kind of diaphragm of rubber hydraulic vibration building mortion and its processing technology, including：Pedestal, guide rail, two lateral braces, stroke cylinder, fluid filled devices, there are two semicircular shell, die holder, vibrating hydraulic cylinder, punch, workbench, plate, supporter, upper cavity, diaphragm of rubber, the hydraulic vibration shaping dies of formation for feature；Diaphragm of rubber is fastened on supporter and cavity junction, upper cavity forms a hydraulic pressure cavity with fluid filled devices, and cavity injects liquid pressure medium, and by hydromechanical system control pressure size.During shaping, in drawing process, first increase fluid pressure, diaphragm of rubber is made to be covered in panel surface, vibrating hydraulic cylinder elder generation low frequency driven mold shapes plate vibration drawing, while adjusts fluid pressure and ensure patch molding pressure, until low frequency forming process terminates；After stretching, high-frequency vibration is carried out, reduces residual stress, inhibits rebound；Finally carry out unloading campaign.The present invention can guarantee plate fully deformed, and inhibit the rebound of shaping, so as to improve forming quality.
Description
Technical field
The invention belongs to stamp forming technology field, specifically a kind of diaphragm of rubber hydraulic vibration building mortion and its
Processing technology.
Technical background
Hydroforming is widely used in the numerous areas such as automobile ship, aerospace.In the past 40 years, space flight and aviation
Some crucial sheet metal members or different in nature section part in the high-tech industries such as industry, nuclear energy application technology, auto manufacturing into
Shape difficulty is high, Weight control is stringent, process costs are high, forming accuracy is low, it is desirable that has new forming technology to occur with theoretical, with symbol
Close the requirements such as lightweight, environmentally protective, energy-saving.General stamping, slab interior can generate stress unevenly distributed,
And frictional force is larger between plate and mold, the part thickness after shaping can be caused to be unevenly distributed, it could even be possible to going out
Situation about now rupturing, and plate mobility it is poor can also occur windrow corrugation situations such as.Using soft fluid come forming board
Material part has many advantages such as the formability that plate can be greatly improved, forming efficiency are high, mold changing facilitates, and receives increasingly
More attention.In simple terms, diaphragm of rubber Hydroforming is one kind that mold or lower mold are replaced with hydraulic medium
The forming property of material can be greatly improved in advanced forming technique compared with conventional ones.
On the other hand, the technique for having occurred eliminating inside workpiece using actual effect is vibrated and participating in stress at present, in correlation
Patent in describe the method and apparatus that residual stress is eliminated with oscillation time-effect method, but this device is only simple
Part after processing is fixed on shake table and carries out vibration processing, this requires in process finishing by part and process equipment
Separation, vibration stress relief treatment is carried out taking to be fixed on shake table, and possible part has occurred that part becomes in the process
Change as sprung back, so the effect of vibration may be deteriorated.
The content of the invention
In place of the present invention is overcomes above-mentioned the shortcomings of the prior art, a kind of diaphragm of rubber hydraulic vibration shaping is provided
Device and its processing technology to can guarantee that plate sufficiently deforms, and can inhibit material rebounds, so as to improve morphoplasm
Amount.
The present invention to achieve the above object of the invention, adopts the following technical scheme that：
A kind of diaphragm of rubber hydraulic vibration building mortion of the present invention, is that the both sides of pedestal are provided with pillar；In the branch
Stroke cylinder is respectively arranged in column, fluid filled devices are provided with above the pillar, in the centre position of the pedestal, and is located
Guide rail is provided with below the fluid filled devices；It is structurally characterized in that, liquid is provided between the fluid filled devices and pedestal
Vibration shaping mold is pressed, the hydraulic vibration shaping dies includes：Two semicircular shells, die holder, vibrating hydraulic cylinder, punching
Head, workbench, annular support, upper cavity, diaphragm of rubber；
The middle position of the die holder is provided with integral loop configuration, and the middle position of the loop configuration is set
Double-deck ring-shaped step is equipped with, the workbench, and the workbench and the loop configuration are provided in the ring-shaped step of upper strata
Upper surface is in a plane, and the middle position of lower floor's ring-shaped step is provided with through hole；It is set in the through hole
Vibrating hydraulic cylinder is stated, the bottom of the vibrating hydraulic cylinder is connected with the pedestal, the top piston bar of the vibrating hydraulic cylinder
It is connected by flange with the punch, and the punch passes through the workbench；
The upper cavity is connected with below the fluid filled devices, the bottom surface of the upper cavity is provided with annular hydraulic
Room is provided with hydraulic pressure hole in the middle position of the upper cavity, and the annular branch is provided in the lower surface of the upper cavity
Support body is provided with the diaphragm of rubber between the upper cavity and annular support, so as to by the annular hydraulic chamber and institute
State the annular chamber isolation of annular support；
Described two semicircular shells are connected with the piston rod of two lateral brace expert's journey cylinders, and the upper cavity with it is described
When the loop configuration upper surface of die holder is engaged to form unitary mould, pass through the described two semicircle shells of the piston rod
Body runs on guide rail and to intermediate closed, so as to which form the unitary mould encircles structure.
A kind of the characteristics of processing technology of diaphragm of rubber hydraulic vibration building mortion of the present invention is to carry out as follows：
Step 1 places plate on the workbench；
Step 2 drives the upper cavity to move downward and passes through the annular support and institute using the fluid filled devices
The loop configuration upper surface for stating die holder is mutually closed, so that the lower section of the diaphragm of rubber and putting down where the workbench
Face forms cavity；
Step 3, the piston rod of the stroke cylinder drive described two semicircular shells to run on guide rail and closed to centre
It closes, so as to form the hydraulic vibration shaping dies；
Step 4, the fluid filled devices inject liquid by the hydraulic pressure hole to the annular hydraulic chamber so that the rubber
Membrane deforms downwards, until fitting to the upper surface of the plate, and certain downward pressure is formed to the plate；
Step 5 sets the frequency of the vibrating hydraulic cylinder as 10~20HZ, and amplitude is 1~2 millimeter so that described to shake
Hydrodynamic cylinder pressure is in low-frequency vibration working condition, by the vibrating hydraulic cylinder punch is driven to move upwards, to the plate
(11) certain upward pressure is formed, until the plate shaping, does not remake and moves upwards；
Step 9 sets the frequency of the vibrating hydraulic cylinder as 500~1000HZ, and amplitude is 0.1~0.2 millimeter, is vibrated
Shi Changwei 1~10 minute makes the vibrating hydraulic cylinder be in high-frequency vibration working condition, so that plate obtains fully deformed.
Compared with the prior art, beneficial effects of the present invention are embodied in：
1st, the present invention substitutes traditional hydraulic cylinder by using vibrating hydraulic cylinder, plate can be generated in forming process
Effect is shaped by the low-frequency vibration of vibrating hydraulic cylinder driven mold, substantially reduces the frictional force between plate and mold, is homogenized
The machining stress of slab interior, makes deformation more full and uniform, ensure that part forming quality.High frequency after shaping
Vibration processing eliminates the internal residual stress of part, it is suppressed that the rebound of part.
2nd, the workbench inside inventive die and die holder are separate structure, and intermediate gaps can also fill vibration isolation material
Material, integrates and not only can guarantee that vibrational energy is effectively transferred on drip molding, but also vibrational energy can be prevented to be transferred to mold exterior
Influence the normal work of device.
3rd, the hydraulic chamber structure of fluid filled devices of the present invention uses upper and lower separated structure, is divided into upper cavity and supporter two
Part facilitates the assembling of device and the sealing of diaphragm of rubber, is also convenient for changeing for equipment.
4th, hydroforming outside of the present invention adds one layer of semicircular shell again, by both sides stroke cylinder control semicircular shell edge
It rail closure and separates, so as to improve the limiting pressure of shaping, stamping material ranges are more extensive, forming effect
Also it is more preferable.
5th, inventive die and pedestal are equipped using separate type, and workbench can be replaced at any time with punch, change the mold simple side
Just, can be with continuous work, material forming efficiency is higher.
6th, apparatus of the present invention assembling and operation are easy, good to material forming effect, have a extensive future.
Description of the drawings
Fig. 1 is the stereogram of apparatus of the present invention；
Fig. 2 is the front view that shape dress of the present invention is put；
Fig. 3 is internal cross section figure of the hydraulic vibration shaping dies of the present invention in low-frequency vibration working condition；
Fig. 4 is internal cross section front view of the hydraulic vibration shaping dies of the present invention in low-frequency vibration working condition；
Fig. 5 is internal cross section figure of the hydraulic vibration shaping dies of the present invention in high-frequency vibration working condition；
Fig. 6 is fluid filled devices hydraulic coupling loading curve figure of the present invention；
Fig. 7 is vibrating hydraulic cylinder low frequency equivalent displacement loading curve figure of the present invention；
Fig. 8 is vibrating hydraulic cylinder high frequency equivalent displacement loading curve figure of the present invention；
Figure label：1 pedestal, 2 guide rails, the pillar of 3 both sides, 4 mold outer frame bodies, 5 stroke cylinders, 6 fluid filled devices, 7 lower dies
Seat, 8 vibrating hydraulic cylinders, 9 punches, 10 workbench, 11 plates, 12 supporters, 13 upper cavities, 14 diaphragm of rubber.
Specific embodiment
In the present embodiment, a kind of diaphragm of rubber hydraulic vibration building mortion, including：Pedestal 1, guide rail 2, two lateral braces 3, mould
Have outer frame body 4, stroke cylinder 5, fluid filled devices 6, die holder 7, vibrating hydraulic cylinder 8, punch 9, workbench 10, plate 11, supporter
12nd, upper cavity 13, diaphragm of rubber 14.Different from traditional hydraulic forming equipment, diaphragm of rubber hydraulic vibration proposed by the present invention
Building mortion in a manner that vibrating hydraulic cylinder and plunger chip die are connected to a fixed, forms brand-new hydraulic vibration shaping
Device, specifically, as shown in Figure 1, Figure 2, Figure 3, Figure 4.
As shown in Figure 1 and Figure 2, the both sides of pedestal 1 are provided with pillar 5；Stroke cylinder 3 is respectively arranged in pillar 5,
The top of pillar 5 is provided with fluid filled devices 6, is specially hydraulic control system and equipment, control device moves up and down and hydraulic pressure fills
Liquid process.In the centre position of pedestal 1, and the lower section in fluid filled devices 6 is provided with guide rail 2, and there are two the settings of guide rail top
Semicircular shell 4, under the action of the piston rod of stroke cylinder 5, the movement of two semicircular shells of control, the movement of this part,
Need the various aspects coordinated to filling liquid control system, vibration shaping system and auxiliary system；Fluid filled devices 6 and pedestal 1 it
Between be provided with hydraulic vibration shaping dies, hydraulic vibration shaping dies includes：Two semicircular shells 4, die holder 7, vibration liquid
Cylinder pressure 8, punch 9, workbench 10, annular support 12, upper cavity 13, diaphragm of rubber 14；
As shown in Figure 3, Figure 4, it is as follows for specific hydraulic vibration shaping dies internal structure, the middle position of die holder 7
Integral loop configuration is provided with, the middle position of loop configuration is provided with double-deck ring-shaped step, and die holder 7 is adopted with pedestal 1
With the structure of separate type, the dismounting and assembling of mold are facilitated, while various work pieces process can also be met, upper strata ring-shaped step
Workbench 10 is inside provided with, the plate 11 of required processing, and workbench 10 and the upper surface of loop configuration are placed on workbench
In a plane, the middle position of lower floor's ring-shaped step is provided with through hole, and hole size can design adjusting to meet
Different size mold and the needs of assembling；Vibrating hydraulic cylinder 8, bottom and 1 phase of pedestal of vibrating hydraulic cylinder 8 are provided in through hole
Connection, the top piston bar of vibrating hydraulic cylinder 8 are connected by flange with punch 9, and punch 9 passes through workbench 10, so as to shape
Into builder；Punch 9 connect it is opposite is separated with workbench 10, between gap size as Parameter adjustable, and workbench 10
With die holder and separate structure, the advantage of doing so is that the energy that vibrates can be concentrated on plate 11 during work, without
The work of mold other component is influenced, while also reduces the noise that vibration generates.
As shown in Figure 3, Figure 4, upper cavity 13 is connected in the lower section of fluid filled devices 6, the bottom surface of upper cavity 13 is provided with ring
Shape hydraulic pressure chamber is provided with hydraulic pressure hole in the middle position of upper cavity 13, for the inflow of liquid medium and the control of pressure, this
A little functions are all that can well be realized on fluid filled devices, and the lower surface of upper cavity 13 is provided with annular support
12, diaphragm of rubber 14 is provided between upper cavity 13 and annular support 12, and be sealed, so as to by annular hydraulic chamber with
Plate annular is close in the annular chamber isolation of annular support 12, injection liquid in hydraulic pressure chamber during work, diaphragm of rubber deformation downwards
Chamber is full of by diaphragm of rubber and liquid, forms a more complete hydraulic pressure chamber of bigger.
As shown in Figure 1 and Figure 2, two semicircular shells 4 are connected with the piston rod of stroke cylinder 3 in two lateral braces 5, and upper
When cavity 13 is engaged to form unitary mould with the loop configuration upper surface of die holder 7, two semicircular shell bottoms are assembled
There are three and the matched sliding block of guide rail, run on guide rail 2 by two semicircular shells 4 of piston rod and closed to centre
It closes, so as to which form unitary mould encircles structure.
As shown in Figure 3, Figure 4, the schematic diagram before being shaped at this time for low frequency building motion, diaphragm of rubber when low-frequency vibration shapes
Deformation punch uplink downwards, is formed movement；It is the mould inside structure in forming process shown in Fig. 5, diaphragm of rubber at this time
14 are close to plate 11 under the action of fluid pressure, while vibrating hydraulic cylinder uses the high-frequency vibration of amplitude very little, can be effective
It is that sheet forming stress distribution is uniform, and the generation of rebound can be inhibited.
In the present embodiment, a kind of processing technology of diaphragm of rubber hydraulic vibration building mortion is to carry out as follows：
Step 1 places plate 11 on workbench 10, selects as a diameter of 350mm, thickness 3mm, material is aluminium alloy
2024, the part of stretch forming is cylindrical member；
Step 2 drives upper cavity 13 to move downward and passes through annular support 12 and die holder 7 using fluid filled devices 6
Loop configuration upper surface is mutually closed, so that the lower section of diaphragm of rubber 14 forms cavity with the plane where workbench 10, this
Shi Shangwei filling liquids so there is the toroidal cavity of hydraulic pressure chamber cavity and supporter respectively；
Step 3, the piston rod of stroke cylinder 3 drive two semicircular shells 4 to be run on guide rail 2 and to intermediate closed, from
And form hydraulic vibration shaping dies；
Step 4, fluid filled devices 6 inject liquid by hydraulic pressure hole to annular hydraulic chamber so that and diaphragm of rubber 14 deforms downwards,
Until fitting to the upper surface of plate 11, and certain downward pressure is formed to plate 11；
Step 5 sets the frequency of vibrating hydraulic cylinder 8 as 10~20HZ, and amplitude is 1~2 millimeter so that vibrating hydraulic cylinder
8 are in low-frequency vibration working condition, by vibrating hydraulic cylinder 8 punch 9 are driven to move upwards, certain upward pressure is formed to plate 11
Power until plate 11 is molded, does not remake and moves upwards；
Step 9 sets the frequency of vibrating hydraulic cylinder 8 as 500~1000HZ, and amplitude is 0.1~0.2 millimeter, during vibration
A length of 1~10 minute, vibrating hydraulic cylinder 8 is made to be in high-frequency vibration working condition, so that plate 11 obtains fully deformed.
Fig. 3, Fig. 4 are the technique of diaphragm of rubber hydraulic pressure low-frequency vibration shaping, and low-frequency vibration focuses on plate and punch
Synchronous working.Low-frequency vibration is advantageous in that the frictional force that can be reduced between plate and mold, is homogenized the stress of slab interior,
Make the deformation in forming process more fully and uniform, so as to ensure the quality of shaping.
Fig. 5 is that the emphasis of the technique high frequency of diaphragm of rubber hydraulic pressure high-frequency vibration shaping is upper when keeping to sheet forming
Portion's fluid pressure control, it is impossible to which fluctuation is too big.Because the deformed patch mould phenomenon of rubber, promotes high frequency vibrating to a certain extent
The dynamic effect to plate fully deformed improves the effect of vibration.High-frequency vibration eliminates the residual stress of inside parts, inhibits
The rebound phenomenon of part.
As shown in fig. 6, fluid filled devices control system, by setting the fluid pressure size of different time, to improve shaping
Quality, it is general want when starting pre-swollen pressure in 1~5Mpa once, maximum hydraulic pressure will be according to different materials, thickness etc.
Adjusting performance.
As shown in fig. 7, the vibration shaping of low frequency, makes the fully deformed of plate, sets 10~20HZ of frequency, amplitude 1~2
Millimeter, direction straight up, forms the equivalent displacement wavy curve of Forming Equipments and part.
As shown in figure 8, the vibration shaping of high frequency inhibits rebound, by setting 500~1000HZ of frequency, amplitude 0.1~0.2
A millimeter, direction vertical direction form Forming Equipments and part vibration equivalent displacement wavy curve.
Claims (2)
1. a kind of diaphragm of rubber hydraulic vibration building mortion is that the both sides of pedestal (1) are provided with pillar (5)；In the pillar
(5) stroke cylinder (3) is respectively arranged in, fluid filled devices (6) are provided with above the pillar (5), in the pedestal (1)
Centre position, and it is provided with guide rail (2) below the fluid filled devices (6)；It is characterized in that in the fluid filled devices (6)
Hydraulic vibration shaping dies is provided between pedestal (1), the hydraulic vibration shaping dies includes：Two semicircular shells
(4), die holder (7), vibrating hydraulic cylinder (8), punch (9), workbench (10), annular support (12), upper cavity (13), rubber
Membrane (14)；
The middle position of the die holder (7) is provided with integral loop configuration, and the middle position of the loop configuration is set
Double-deck ring-shaped step is equipped with, the workbench (10), and the workbench (10) and the ring are provided in the ring-shaped step of upper strata
The upper surface of shape structure is in a plane, and the middle position of lower floor's ring-shaped step is provided with through hole；In the through hole
The vibrating hydraulic cylinder (8) is provided with, the bottom of the vibrating hydraulic cylinder (8) is connected with the pedestal (1), the vibration liquid
The top piston bar of cylinder pressure (8) is connected by flange with the punch (9), and the punch (9) passes through the workbench
(10)；
The upper cavity (13) is connected with below the fluid filled devices (6), the bottom surface of the upper cavity (13) is provided with ring
Shape hydraulic pressure chamber is provided with hydraulic pressure hole in the middle position of the upper cavity (13), is set in the lower surface of the upper cavity (13)
The annular support (12) is equipped with, the diaphragm of rubber is provided between the upper cavity (13) and annular support (12)
(14), so that the annular hydraulic chamber be isolated with the annular chamber of the annular support (12)；
Described two semicircular shells (4) are connected with the piston rod of two lateral braces (5) interior stroke cylinder (3), and in the upper cavity
(13) when being engaged to form unitary mould with the loop configuration upper surface of the die holder (7), the piston rod institute is passed through
It states two semicircular shells (4) to run on guide rail (2) and to intermediate closed, so as to which form the unitary mould encircles knot
Structure.
2. a kind of processing technology based on diaphragm of rubber hydraulic vibration building mortion described in claim 1, it is characterized in that by such as
Lower step carries out：
Step 1 places plate (11) on the workbench (10)；
Step 2 drives the upper cavity (13) to move downward and passes through the annular support using the fluid filled devices (6)
(12) the loop configuration upper surface with the die holder (7) is mutually closed, so that the lower section of the diaphragm of rubber (14) and institute
Plane where stating workbench (10) forms cavity；
Step 3, the piston rod of the stroke cylinder (3) drive described two semicircular shells (4) to be run and on guide rail (2)
Between be closed, so as to form the hydraulic vibration shaping dies；
Step 4, the fluid filled devices (6) inject liquid by the hydraulic pressure hole to the annular hydraulic chamber so that the rubber
Membrane (14) deforms downwards, until fit to the upper surfaces of the plate (11), and the plate (11) is formed it is certain to
Lower pressure；
Step 5 sets the frequency of the vibrating hydraulic cylinder (8) as 10~20HZ, and amplitude is 1~2 millimeter so that the vibration
Hydraulic cylinder (8) is in low-frequency vibration working condition, by the vibrating hydraulic cylinder (8) punch (9) is driven to move upwards, to institute
It states plate (11) and forms certain upward pressure, until the plate (11) is molded, does not remake and move upwards；
Step 9 sets the frequency of the vibrating hydraulic cylinder (8) as 500~1000HZ, and amplitude is 0.1~0.2 millimeter, is vibrated
Shi Changwei 1~10 minute makes the vibrating hydraulic cylinder (8) be in high-frequency vibration working condition, so that plate (11) is filled
Divide deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282365.8A CN108043941B (en) | 2017-12-07 | 2017-12-07 | A kind of diaphragm of rubber hydraulic vibration forming device and its processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711282365.8A CN108043941B (en) | 2017-12-07 | 2017-12-07 | A kind of diaphragm of rubber hydraulic vibration forming device and its processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108043941A true CN108043941A (en) | 2018-05-18 |
| CN108043941B CN108043941B (en) | 2019-06-18 |
Family
ID=62123069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711282365.8A Expired - Fee Related CN108043941B (en) | 2017-12-07 | 2017-12-07 | A kind of diaphragm of rubber hydraulic vibration forming device and its processing technology |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719042A (en) * | 2020-06-24 | 2020-09-29 | 北京航空航天大学 | Heat flow pulse type ring residual stress homogenization method and device |
| CN116984468A (en) * | 2023-09-26 | 2023-11-03 | 合肥工业大学 | Ultra-thin metal polar plate ultrasonic auxiliary accurate forming device |
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| US2317869A (en) * | 1941-04-15 | 1943-04-27 | Lewis E Walton | Combination hydraulic and rubber die |
| GB771257A (en) * | 1953-12-14 | 1957-03-27 | Svenska Aeroplan Ab | Hydraulic forming attachment for presses |
| FR1370852A (en) * | 1963-07-19 | 1964-08-28 | E Mabille Ets | Monobloc metal ammunition box with external bosses obtained by hydraulic expansion |
| US3391559A (en) * | 1965-11-10 | 1968-07-09 | Mc Donnell Douglas Corp | Diaphragm type hydraulic press |
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| CN102896196A (en) * | 2012-09-14 | 2013-01-30 | 黄启瑞 | Metal forming system with modular high-pressure fluid guiding device |
| US9216523B2 (en) * | 2010-06-23 | 2015-12-22 | Gentex Corporation | Process for shaping or forming articles |
| CN106345882A (en) * | 2016-11-22 | 2017-01-25 | 合肥工业大学 | Vibration-assisted aircraft skin stretch forming and resilience inhibition device and technique |
| US20170027268A1 (en) * | 2013-03-15 | 2017-02-02 | Inter Materials Llc | Ballistic helmets and method of manufacture thereof |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2317869A (en) * | 1941-04-15 | 1943-04-27 | Lewis E Walton | Combination hydraulic and rubber die |
| GB771257A (en) * | 1953-12-14 | 1957-03-27 | Svenska Aeroplan Ab | Hydraulic forming attachment for presses |
| FR1370852A (en) * | 1963-07-19 | 1964-08-28 | E Mabille Ets | Monobloc metal ammunition box with external bosses obtained by hydraulic expansion |
| US3391559A (en) * | 1965-11-10 | 1968-07-09 | Mc Donnell Douglas Corp | Diaphragm type hydraulic press |
| US3681958A (en) * | 1970-10-15 | 1972-08-08 | Grumman Aerospace Corp | High pressure forming press |
| CN2074689U (en) * | 1990-09-15 | 1991-04-10 | 武汉市热喷涂厂 | Liquid pressure increasing shaping device for concave and convex heat exchanging plate |
| US9216523B2 (en) * | 2010-06-23 | 2015-12-22 | Gentex Corporation | Process for shaping or forming articles |
| CN102896196A (en) * | 2012-09-14 | 2013-01-30 | 黄启瑞 | Metal forming system with modular high-pressure fluid guiding device |
| US20170027268A1 (en) * | 2013-03-15 | 2017-02-02 | Inter Materials Llc | Ballistic helmets and method of manufacture thereof |
| CN106345882A (en) * | 2016-11-22 | 2017-01-25 | 合肥工业大学 | Vibration-assisted aircraft skin stretch forming and resilience inhibition device and technique |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111719042A (en) * | 2020-06-24 | 2020-09-29 | 北京航空航天大学 | Heat flow pulse type ring residual stress homogenization method and device |
| CN111719042B (en) * | 2020-06-24 | 2021-06-15 | 北京航空航天大学 | Heat flow pulse type ring residual stress homogenization method and device |
| CN116984468A (en) * | 2023-09-26 | 2023-11-03 | 合肥工业大学 | Ultra-thin metal polar plate ultrasonic auxiliary accurate forming device |
| CN116984468B (en) * | 2023-09-26 | 2023-12-15 | 合肥工业大学 | Ultra-thin metal polar plate ultrasonic auxiliary accurate forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108043941B (en) | 2019-06-18 |
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