CN110270625A - Double acting die set device - Google Patents
Double acting die set device Download PDFInfo
- Publication number
- CN110270625A CN110270625A CN201910002062.9A CN201910002062A CN110270625A CN 110270625 A CN110270625 A CN 110270625A CN 201910002062 A CN201910002062 A CN 201910002062A CN 110270625 A CN110270625 A CN 110270625A
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- China
- Prior art keywords
- stock
- poppet
- fore
- die
- double acting
- Prior art date
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- Granted
Links
- 238000004080 punching Methods 0.000 description 31
- 239000002994 raw material Substances 0.000 description 15
- 238000003825 pressing Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Forging (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses a kind of double acting die set devices comprising: bracket component and die shank component.Bracket component includes fore-stock, after-poppet, two connecting shafts and two disc cams, the both ends of two connecting shafts are separately connected the top of fore-stock and the top of after-poppet, fore-stock and after-poppet are arranged in parallel, two connecting shafts are arranged in parallel, each disc cam is rotatably connected at a connecting shaft, and two disc cams are between fore-stock and after-poppet.Die shank component is between fore-stock and after-poppet and can move up and down, there are two the symmetrical inclined pressure surfaces being disposed opposite to each other for the outside tool of die shank component, two symmetrical inclined pressure surfaces are connected to two disc cams along vertically downward direction respectively, and each disc cam is moved down with die shank component and rotated gradually downward.The present apparatus can implement fine-edge blanking in the case where lack valuableness three move dedicated fine blanking press on common punch press.
Description
Technical field
The present invention relates to a kind of double acting die set devices.
Background technique
Currently used fine blanking technology is to be moved on dedicated fine blanking press with the mold of special construction three, is applied to plate
It is punched in the case where adding crunch, to obtain, dimensional tolerances are small, and the accuracy of form and position is high and shear surface is bright and clean, smooth
Punching parts without gradient.And the key factor that obtain the higher fine blanking part of quality is: first before fine shearing starts
First to application unit pressure inside and outside raw material deformed area close to the crunch of Materials Yield Limit, and in entire shear history
It remains unchanged.Common simple fine device generally utilizes elastomer to generate pressure-pad-force, with the increase of punch-pin amount of movement, week
The pressing force on side is also being continuously increased, and causes punching quality impacted.Another simple fine device uses additional hydraulic device
Pressure-pad-force is generated, structure is complicated, expensive though this device can generate stable pressure-pad-force machine, leads to the cost of punching press
It is higher, so that the application of fine blanking technology technology cannot be universal.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome, three to move dedicated fine blanking press expensive in the prior art,
Simple fine device is punched ropy defect, and it is rack-mounted to provide a kind of double acting die that can implement fine-edge blanking on common punch press
It sets.
The present invention is to solve above-mentioned technical problem by following technical proposals:
A kind of double acting die set device, it is characterized in that comprising:
Bracket component, the bracket component include fore-stock, after-poppet, two connecting shafts and two disc cams, and two
The both ends of the connecting shaft are separately connected the top of the fore-stock and the top of the after-poppet, the fore-stock and it is described after
Bracket is arranged in parallel, and two connecting shafts are arranged in parallel, and each disc cam is rotatably connected at one
A connecting shaft, two disc cams are between the fore-stock and the after-poppet；
Die shank component, the die shank component is between the fore-stock and the after-poppet and can move up and down, institute
The symmetrical inclined pressure surface that there are two the outside tools for stating die shank component is disposed opposite to each other, two symmetrical inclined pressure surfaces are along side straight down
To being connected to two disc cams respectively, each disc cam moved down with the die shank component and gradually downward
Rotation.
Preferably, the die shank component includes die shank, two retainers and two gyration blocks, opened on the die shank there are two
The lnner arced slot being disposed opposite to each other, each gyration block are semi-cylindrical, each gyration block and a lnner arced slot
Match, the die shank is fixed in one end of each retainer, and each gyration block is rotatably connected at an institute
The other end of retainer is stated, two symmetrical inclined pressure surfaces are located on two gyration blocks.
Preferably, the bracket component further includes fixed plate, the fixed plate is individually fixed in the lower part of the fore-stock
With the lower part of the after-poppet.
Preferably, the fixed plate is connected to the fore-stock and the after-poppet by bolt and pin.
Preferably, the both ends of each connecting shaft are equipped with external screw thread, two connecting shafts are threadingly attached to institute
State fore-stock and the after-poppet.
Preferably, each disc cam is provided with connecting hole along central axis, each disc cam passes through the company
It connects hole and is sheathed on the connecting shaft.
Preferably, having the preceding avoid holes and rear avoid holes of horizontal perforation on the fore-stock and the after-poppet.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can any combination to get each preferable reality of the present invention
Example.
The positive effect of the present invention is that: after the present apparatus is combined with common ball mould bases component, it can be realized
While die shank carries out punching press, is generated using the correlation between cam and symmetrical inclined pressure surface and stablize pressure-pad-force, so that general
Also it can be realized the effect of fine on logical punching machine.The present apparatus can save cost, move dedicated fine pressure lacking expensive three
In the case where power machine, after device is combined with common ball mould bases component, mixes and be punched stage property with by stamping is corresponding, just can
Implement fine-edge blanking.
Detailed description of the invention
Fig. 1 is the facing structure partial sectional view of double acting die set device in the embodiment of the present invention 1.
Fig. 2 is the left view structure partial cross-sectional view of double acting die set device in the embodiment of the present invention 1.
Fig. 3 is the structural schematic diagram that die shank component is abutted with disc cam in the embodiment of the present invention 1.
Fig. 4 is that double acting die set device is mutually tied with ball mould bases component, upper die component, lower mold assemblies in the embodiment of the present invention 2
The structural schematic diagram of conjunction.
Fig. 5 is that double acting die set device is combined with ball mould bases component, upper cavity die, lower cavity die in the embodiment of the present invention 3
The structural schematic diagram of blanking with opposed dies.
Description of symbols:
Bracket component 100
Fore-stock 110
Preceding avoid holes 111
Preceding hole lower flat 112
After-poppet 120
Avoid holes 121 afterwards
Metapore lower flat 122
Connecting shaft 130
Disc cam 140
Connecting hole 141
Fixed plate 150
Die shank component 200
Symmetrical inclined pressure surface 210
Retainer 220
Die shank 230
Lnner arced slot 231
Gyration block 240
Upper die holder 310
Lower die holder 320
Guide post 330
Ball bearing guide bushing 340
Pressure spring 350
Upper padding plate 360
Pop-up 410
Punch retainer 420
Punch-pin 430
Gear ring pressing plate 440
Cavity plate 510
Head part plate 520
Mandril 530
Supporting plate 540
Rubber pad 550
Upper cavity die 600
Spring 610
Lower cavity die 700
Groove 710
Ejector 800
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
Embodiment 1
Figures 1 and 2 show that a kind of double acting die set device comprising bracket component 100 and die shank component 200.
Bracket component 100 includes fore-stock 110, the disc cam 140 of connecting shaft 130, two of after-poppet 120, two and consolidates
Fixed board 150.The both ends of two connecting shafts 130 are separately connected the top of fore-stock 110 and the top of after-poppet 120, fixed plate 150
The lower part of fore-stock 110 and the lower part of after-poppet 120 are fixed on by bolt and pin.Fore-stock 110 and after-poppet 120 are mutual
It is arranged in parallel, two connecting shafts 130 are arranged in parallel.Each disc cam 140 is rotatably connected at a connecting shaft
130, two disc cams 140 are between fore-stock 110 and after-poppet 120.
Die shank component 200 is between fore-stock 110 and after-poppet 120 and can move up and down, outside die shank component 200
There are two the symmetrical inclined pressure surfaces 210 being disposed opposite to each other for side tool, are equivalent to the cammed surface that oblique angle can change with stroke, two symmetrical inclineds
Pressure surface 210 is connected to two disc cams 140 along vertically downward direction respectively, and each disc cam 140 is with die shank component 200
It moves down and rotates gradually downward, until two symmetrical inclined pressure surfaces 210 are vertically, two disc cams 140 stop
Rotation, and die shank component 200 still is able to continue traveling downwardly.
Stamping device will improve the quality of punching press, and key is to need to connect application unit pressure inside and outside raw material deformed area
The crunch of nearly Materials Yield Limit, and remained unchanged in entire shear history.Commonly the flanging part of stamping device is
Elastomeric element, though can be realized the effect of pressing raw material deformed area, its pressing force is continuously increased with the movement of die shank,
Affect the quality of punching press.It matches, and applies to common ball mould bases component in the present solution, working as double acting die set device
When common punch press, die shank 230 is moved downward under the driving of punching machine and is punched to raw material, using disc cam 140 with it is right
Claim the correlation baroclined between face 210 that the upper die holder 310 of ball mould bases component can be made to move downward and pressure is generated to raw material
Bian Li, to can also implement fine-edge blanking on common punch press.In addition, being filled compared to the punching press that flanging part is elastomeric element
It sets, when the face abutted against in disc cam 140 with symmetrical inclined pressure surface 210 is in vertical direction, disc cam 140 is no longer rotated,
The pressure-pad-force of generation remains unchanged, therefore the quality of punching press is more preferably.For the fine part for adapting to different-thickness and material, pass through setting
Different cam curves can obtain the gear ring pressure-pad-force of required position and size.
For the ease of assembly and disassembly connecting shaft 130, the both ends of each connecting shaft 130 are equipped with external screw thread, two connecting shafts
130 are threadingly attached to fore-stock 110 and after-poppet 120.
In addition, when needing according to the thickness of raw material or material requirements replacement disc cam 140, for the ease of carousel
Shape cam 140, each disc cam 140 are provided with connecting hole 141 along central axis, and each disc cam 140 passes through 141 sets of connecting hole
Set on connecting shaft 130.In the present solution, only connecting shaft 130 need to be disassembled from fore-stock 110 and after-poppet 120, and will
Disc cam 140 is removed from connecting shaft 130, and then new disc cam 140 is placed in connecting shaft 130, finally will connection
Axis 130 is re-installed on fore-stock 110 and after-poppet 120, that is, completes the replacement of disc cam 140.
In practical applications, conventional inclined wedge cam mechanism is other than being in face contact under a location status, at it
Line contact is under remaining location status, contact stress is larger, easily causes to wear.In order to which the contact for reducing between the two is answered
Power avoids line contact, as shown in figure 3, die shank component 200 includes 230, two retainers 220 of die shank and two gyration blocks
240, it opens on die shank 230 there are two the lnner arced slot 231 being disposed opposite to each other, each gyration block 240 is semi-cylindrical, each gyration block
240 match with a lnner arced slot 231, and die shank 230 is fixed in one end of each retainer 220, and each gyration block 240 can turn
It is connected to the other end of a retainer 220 dynamicly, two symmetrical inclined pressure surfaces 210 are located on two gyration blocks 240.
It is mutually abutted using gyration block 240 with 140 structure of disc cam, and semi-cylindrical and inner circle on gyration block 240
The inner surface of arc slot 231 matches, so that the gyration block 240 while rotation of disc cam 140 is also rotating with it, guarantees disk
Always it is in face contact between shape cam 140 and gyration block 240, reduces contact stress between the two, avoids between the two
Big abrasion is generated, the service life of fine device is improved.
After double acting die set device and ball mould bases component are combined, to avoid fore-stock 110 and after-poppet 120 from interfering to lead
Expect and punching situation can be observed, the preceding avoid holes 111 of horizontal perforation are had on fore-stock 110 and after-poppet 120 with after
Avoid holes 121.The preceding hole lower flat 112 of preceding avoid holes 111 and the metapore lower flat 122 and fixed plate of rear avoid holes 121
150 lower surface fitting.Fore-stock 110 and after-poppet 120 and fixed plate 150 are connected into one " U " by bolt and pin
The rigid body of font.This rigid body has enough strength and stiffness, it is sufficient to which balance is applied to bracket because of powerful pressure-pad-force
Counter-force.
Embodiment 2
The present embodiment is the structure after double acting die set device, ball mould bases component, upper die component and lower mold assemblies are combined
And the course of work.
As shown in figure 4, ball mould bases component includes upper die holder 310, lower die holder 320, guide post 330, ball bearing guide bushing 340, pressure
Spring 350 and upper padding plate 360.Upper die component includes pop-up 410, punch retainer 420, punch-pin 430 and gear ring pressing plate 440.Lower die
Component includes cavity plate 510, head part plate 520, mandril 530, supporting plate 540 and rubber pad 550.Wherein, the fixation of double acting die set device
Plate 150 is fixed on lower die holder 320.In the present embodiment, floating connection between die shank 230 and pop-up 410, to solve punching machine closure
The height problem inconsistent with the closure height of ball mould bases component.
The course of work can be divided into flanging stage, punching press stage, loose metal stage, punch-pin rise and liftout stage, specific works
Process is as follows:
The flanging stage:
Die shank 230 moves down under the driving of punching machine, and gyration block 240 and disc cam 140 cooperate and generate rotation,
Disc cam 140 rotates down pressing upper die holder 310 and moves down.Meanwhile gear ring pressing plate 440 follow upper die holder 310 simultaneously to
Lower movement, presses the periphery of raw material.When the contact surface that gyration block 240 and disc cam 140 turn to the two is in vertical position
When setting, disc cam 140 does not continue to generate rotation, and the position of gear ring pressing plate 440 remains unchanged at this time, and pressure-pad-force is kept not
Become.
The punching press stage:
Die shank 230 continues to move down, and then die shank 230 pushes pop-up 410, punch retainer 420, punch-pin 430 downward
Mobile, punch-pin 430 will be in blanking part punching press to cavity plate 510.The effect of head part plate 520, mandril 530 and supporting plate 540 in punch-pin 430
Under move down, rubber pad 550 generate flexible deformation.
The loose metal stage:
After completing punching press, die shank 230 moves up under the driving of punching machine, and die shank 230 drives gyration block 240 simultaneously first
It moves up, disc cam 140 remains stationary, and pop-up 410, punch retainer 420, punch-pin 430 remain stationary.Work as gyration block
When 240 axis of rotation is higher by the rotation axis of disc cam, under the restoring force effect of pressure spring 350, gyration block 240 and dish type
Cam 140 generates rotation, and upper die holder 310 moves up, and gear ring pressing plate 440 unclamps raw material, the process for completing loose metal.
Punch-pin gos up and the liftout stage:
Die shank 230 continues up, and then the bottom of die shank 230 and the top of pop-up 410 abut against, 230 band of die shank
Dynamic pop-up 410, punch retainer 420, punch-pin 430 move up, and complete the process that punch-pin 430 gos up.Punch-pin 430 is from cavity plate
During removing in 510, supporting plate 540, mandril 530, head part plate 520 will be punched under the action of the restoring force of rubber pad 550
Part gradually ejection outward out of cavity plate 510, and when upper die holder 310 is returned to upper limit position, pop-up 410 continues uplink, causes
Punch-pin 430 is shaken off out from billot.
General fine device is easy to produce phenomenon of the blanking part in raw material, when reason is that punch-pin 430 gos up
Raw material are still remained stationary by the effect of pressure-pad-force, and blanking part is headed into the aperture of raw material by the effect of liftout power again
It is interior.Because the gap between the blanking part of fine and the aperture of raw material is smaller, the blanking part in raw material is caused to be difficult to take
Out.And the above problem is then not present using the blanking apparatus of this double acting die set device, reason is that punch-pin 430 gos up with respect to tooth
Circle pressing plate 440 compares lag, therefore blanking part cannot be introduced into the aperture of raw material.
Embodiment 3
The present embodiment is double acting die set device, ball mould bases component, upper cavity die 600 and lower cavity die 700,800 phase of ejector
Structure and the course of work after combination.
As shown in figure 5, ball mould bases component includes upper die holder 310, lower die holder 320, guide post 330, ball bearing guide bushing 340, pressure
Spring 350 and upper padding plate 360.Wherein, the fixed plate 150 of double acting die set device is fixed on lower die holder 320, and lower cavity die 700 is fixed on
Fixed plate 150, upper cavity die 600 are fixed on upper die holder 310.In the present embodiment, the lower end of ejector 800 is located at upper cavity die 600
Punching type it is intracavitary, the upper end of ejector 800 is between upper padding plate 360 and upper cavity die 600.The upper end of ejector 800 and upper
The compressed spring 610 of vertical direction is equipped between cavity plate 600, the upper end of ejector 800 is limited by upper padding plate 360, Wu Facong
Upper die holder 310 is detached from.
The course of work can be divided into punching press stage, pusher stage, recovery stage, and specific work process is as follows:
The punching press stage:
Die shank 230 moves down under the driving of punching machine, and gyration block 240 and disc cam 140 cooperate and generate rotation,
Disc cam 140 rotates down pressing upper die holder 310 and moves down.Meanwhile upper cavity die 600 follows upper die holder 310 downward simultaneously
Mobile, the cutting edge of upper cavity die 600 and the cutting edge of lower cavity die 700 liquidate workpiece immediately, and upper cavity die 600 continues to move downward, when returning
When the contact surface that switch block 240 and disc cam 140 both turn to is in a vertical position, the cutting edge and lower cavity die of upper cavity die 600
700 cutting edge is in contact, and the two sides of shaft-like raw material are blanked for the cutting edge of upper cavity die 600 and the cutting edge resultant force of lower cavity die 700,
Workpiece after completing punching stays the punching type in upper cavity die 600 and lower cavity die 700 intracavitary, and disc cam 140 does not continue at this time
Rotation, the position of upper cavity die 600 remains unchanged.
The pusher stage:
Die shank 230 continues to move down, and then 230 bottom of die shank is in contact with the upper end of ejector 800, and pushes down on
Punching type of the ejector 800 in upper cavity die 600 is intracavitary to be moved downward, and the workpiece after punching is pushed into lower cavity die by ejector 800
In 700 groove 710.The bottom of groove 710 is arc-shaped bottom, uses rod-shaped equipment by the workpiece after punching convenient for operator
It is horizontal out of groove 710 to release.
Recovery stage:
After completing pusher, die shank 230 moves up under the driving of punching machine, and ejector 800 is acted in the elastic force of spring 610
Under follow die shank 230 to move upwards, when ejector 800 abut upper padding plate 360 after, ejector 800 can not continue up.Mould
Handle 230 continues up, and gyration block 240 and disc cam 140 generate rotation, upper die holder 310 under the action of pressure spring 350 to
Upper movement, upper cavity die 600 are separated with 700 phase of lower cavity die, and ball mould bases component completes the process replied.
Said mechanism can under the driving of punching machine according to punching press, pusher, reply sequence of motion in cycles, constantly into
Row punching movement.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (7)
1. a kind of double acting die set device, characterized in that it comprises:
Bracket component, the bracket component includes fore-stock, after-poppet, two connecting shafts and two disc cams, described in two
The both ends of connecting shaft are separately connected the top of the fore-stock and the top of the after-poppet, the fore-stock and the after-poppet
Arranged in parallel, two connecting shafts are arranged in parallel, and each disc cam is rotatably connected at an institute
Connecting shaft is stated, two disc cams are between the fore-stock and the after-poppet；
Die shank component, the die shank component is between the fore-stock and the after-poppet and can move up and down, the mould
There are two the symmetrical inclined pressure surfaces being disposed opposite to each other for the outside tool of handle component, and two symmetrical inclined pressure surfaces are along vertically downward direction point
It is not connected to two disc cams, each disc cam moves down with the die shank component and turns gradually downward
It is dynamic.
2. double acting die set device as described in claim 1, which is characterized in that the die shank component includes die shank, two holdings
Frame and two gyration blocks are opened on the die shank there are two the lnner arced slot being disposed opposite to each other, and each gyration block is semi-cylindrical,
Each gyration block matches with a lnner arced slot, and the die shank is fixed in one end of each retainer, often
One gyration block is rotatably connected at the other end of a retainer, and two symmetrical inclined pressure surfaces are located at two
On a gyration block.
3. double acting die set device as described in claim 1, which is characterized in that the bracket component further includes fixed plate, described
Fixed plate is individually fixed in the lower part of the fore-stock and the lower part of the after-poppet.
4. double acting die set device as claimed in claim 3, which is characterized in that the fixed plate is connected to by bolt and pin
The fore-stock and the after-poppet.
5. double acting die set device as described in claim 1, which is characterized in that the both ends of each connecting shaft are equipped with outer spiral shell
Line, two connecting shafts are threadingly attached to the fore-stock and the after-poppet.
6. double acting die set device as claimed in claim 5, which is characterized in that each disc cam is provided with company along central axis
Hole is connect, each disc cam is sheathed on the connecting shaft by the connecting hole.
7. double acting die set device as described in claim 1, which is characterized in that opened respectively on the fore-stock and the after-poppet
There are the horizontal preceding avoid holes and rear avoid holes penetrated through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002062.9A CN110270625B (en) | 2019-01-02 | 2019-01-02 | Double-acting die carrier device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002062.9A CN110270625B (en) | 2019-01-02 | 2019-01-02 | Double-acting die carrier device |
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| CN110270625A true CN110270625A (en) | 2019-09-24 |
| CN110270625B CN110270625B (en) | 2024-08-02 |
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| CN101912926A (en) * | 2010-08-17 | 2010-12-15 | 上海工程技术大学 | Multipurpose sheet metal stamping die-set for positive edge pressing |
| CN202087671U (en) * | 2011-01-26 | 2011-12-28 | 成都万荣科技有限责任公司 | Simple precise die |
| CN202123159U (en) * | 2011-06-16 | 2012-01-25 | 上海工程技术大学 | Drawing die with constant blank holder force |
| CN202943124U (en) * | 2012-11-14 | 2013-05-22 | 珠海格莱利模具有限公司 | Fine stamping die of car disc braking brake pad steel back |
| CN103934298A (en) * | 2014-05-13 | 2014-07-23 | 四川中邦模具有限公司 | Cold extruding mould of automobile tappet body |
| US20170106427A1 (en) * | 2015-10-14 | 2017-04-20 | Magna Powertrain Inc. | Fine Blanking Cam Die |
| CN207695481U (en) * | 2018-01-09 | 2018-08-07 | 长春一汽四环力达冲压制品有限公司 | A kind of double acting bending die |
| CN208303613U (en) * | 2018-05-24 | 2019-01-01 | 江阴市高拓精密模具有限公司 | A kind of porous punching press separation mold |
| CN209439278U (en) * | 2019-01-02 | 2019-09-27 | 上海宇飞金属制品有限公司 | Double acting die set device |
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