CN106513485A - Plate locking device and pressing die - Google Patents
Plate locking device and pressing die Download PDFInfo
- Publication number
- CN106513485A CN106513485A CN201611014738.9A CN201611014738A CN106513485A CN 106513485 A CN106513485 A CN 106513485A CN 201611014738 A CN201611014738 A CN 201611014738A CN 106513485 A CN106513485 A CN 106513485A
- Authority
- CN
- China
- Prior art keywords
- plate
- pivot
- locking device
- block
- cantilever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/04—Blank holders; Mounting means therefor
-
- 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
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
- B21D24/12—Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D53/00—Making other particular articles
- B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
Abstract
The invention discloses a plate locking device and a pressing die. The locking device comprises a mounting base, a material locking block and a power device, wherein a first cantilever and a second cantilever are formed on the same side of the mounting base; the material locking block is provided with a material locking part formed at the front end, a connecting part formed at the rear end and a pivot part formed in the middle, and the pivot part is pivoted to a first pivot through the first cantilever; and one end of the power device is matched with the connecting part, the other end of the power device is matched with the second cantilever, and the power device drives the material locking block to rotate along the first pivot. The pressing die comprises an upper die body and a lower die body. A bland holder is formed on the lower die body. The material locking device and the lower die body are fixedly arranged. The material locking block is located above the blank holder. The power device of the locking device drives the material locking block to rotate, the limiting function to a plate can be achieved, and leaping of the plate is reduced or avoided; and by adoption of the pressing die, the plate is further fastened, and leaping of the plate is avoided.
Description
Technical field
The present invention relates to mould molding technical field, more particularly to plate locking device and compacting tool set.
Background technology
At present, section line approximate " V " shape of the luggage case outside plate of three box car along face in symmetrical, according to monoblock type outside
Plate, approximate " several " shape in its drawing die flanging ring face, due to being higher by much than left and right both sides in the middle of flanging ring face, plate exists
On type face, stable position becomes extremely difficult.
Current solution is that the relatively low position in left and right both sides type face respectively arranges two with retainer work(on blank holder
The location-plate of energy, after making on plate input blank holder, keeps formation state first, as upper mould declines and blank holder closure, on
Mould drives plate to be gently curved to " several " shape.
This measure is effectively improved in mould and blank holder closing course, position stability of the plate with respect to blank holder,
But the drawing operation part scrappage caused because of plate position play is still higher, can only control 10%～15%, it is impossible to
Reach zero scrappage target.
The content of the invention
It is an object of the invention to provide a kind of plate locking device and compacting tool set, solve above-mentioned defect, reduce or keep away
Exempt from the higher problem of the scrappage that causes because of plate play.
The plate locking device of the present invention, wherein, including：Mounting seat, is formed with first in the same side of the mounting seat
Cantilever and the second cantilever；Lock material block, with being formed at the lock material portion of front end, be formed at the connecting portion of rear end and be formed at centre
Pivot part, the pivot part and first cantilever pass through the first pivot pivot joint；Dynamic equipment, one end are matched somebody with somebody with the connecting portion
Close, the other end is coordinated with second cantilever, and drive the lock material block to pivot along described first.
Plate locking device as above, wherein, the dynamic equipment, one end pass through the second pivot pivot with the connecting portion
Connect, with second cantilever by the 3rd pivot pivot joint, the dynamic equipment drives the lock material block along first pivot to the other end
Axle is rotated.
Plate locking device as above, wherein, the dynamic equipment is pressure actuation device, including pressure cylinder and piston
Bar, the pressure cylinder bottom and the second cantilever pivot joint, the piston rod and the connecting portion pivot joint.
Plate locking device as above, wherein, the piston rod top is formed with connector, the connector and institute
State connecting portion pivot joint.
Present invention compacting tool set also, including：Upper mould；Lower mould, is formed with blank holder on the lower mould；Above-mentioned plate
Locking device, the plate locking device are fixedly installed with the lower mould, and the lock material block is located at the top of the blank holder, and
And under the drive of the dynamic equipment, plate is compressed jointly with the blank holder；The mould correspondence plate locking dress on described
The position put, forms slot to make way.
Compacting tool set as above, wherein, also include：Cambered surface detent mechanism, is arranged on the corner of the lower mould；It is described
Cambered surface detent mechanism includes base, support block, cambered surface location-plate and retainer block；The base is fixedly connected with the lower mould, institute
State support block to be fixedly installed on the base；The cambered surface location-plate is fixedly installed on the base, and is resisted against described
In support block, the through hole stretched out for the retainer block on the cambered surface location-plate, is formed with；The retainer block and the support block
Rotate connection.
Compacting tool set as above, wherein, the retainer block is rotated between the first position and the second position；Described
One position is that the retainer block is stretched out from the through hole, for lifting the plate；The second place is, the retainer
Surface of the surface of block and the cambered surface location-plate flush or below the cambered surface location-plate.
Compacting tool set as above, wherein, when the retainer block is located at the first position, for lifting the plate
Face height greater than or equal to the blank holder height.First than with prior art, the plate locking device of the present invention it is dynamic
Power device drives lock material block to rotate, and can realize the limit function to plate, reduce or avoid jumping for plate.Further, originally
The compacting tool set that application is provided, employs above-mentioned plate locking device, and the cooperation with blank holder, further fastens plate
Material, it is to avoid which jumps, and go up mould in addition and is formed with slot to make way, will not change the operation of compacting, it is ensured that normal compacting flow process with
While efficiency, the scrappage of plate is reduced.
Description of the drawings
Fig. 1 is the structural representation of plate locking device of the present invention；
Explosive views of the Fig. 2 for Fig. 1；
Fig. 3 is the schematic diagram of plate locking device lock material block of the present invention；
Fig. 4 is the schematic diagram of compacting tool set of the present invention；
Fig. 5 is the schematic diagram of cambered surface detent mechanism in compacting tool set of the present invention；
Fig. 6 is partial schematic diagram when compacting tool set of the present invention works.
Description of reference numerals：
1- plate locking devices；11- lock material blocks；111- lock material portion；112- pivot parts；113- connecting portions；The first pivots of 12-
Axle；The first cantilevers of 13-；14- mounting seats；The second pivots of 15-；16- connectors；17- dynamic equipments；The 3rd pivots of 18-；19- second
Cantilever；2- cambered surface detent mechanisms；21- cambered surface location-plates；22- retainer blocks；23- bases；24- support blocks；3- plates；Mould under 4-；
41- blank holders.
Specific embodiment
Embodiments of the invention are described below in detail, the example of embodiment is shown in the drawings, wherein identical from start to finish
Or similar label represents same or similar element or the element with same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
A kind of plate locking device of disclosure, also for disclosing a kind of compacting tool set with the plate locking device,
Above-mentioned plate locking device (hereinafter referred to as locking device) and compacting tool set are illustrated separately below.
Referring to Fig. 1 and Fig. 2, locking device 1 includes mounting seat 14, lock material block 11 and dynamic equipment 17, mounting seat 14 it is same
Two cantilevers, the first cantilever 13 and the second cantilever 19 are formed with side, two cantilevers are respectively intended to connection lock material block 11 and power
Device 17.Referring to Fig. 3, lock material block 11 has lock material portion 111, connection end 113 and pivot part 112, wherein lock material portion 111 is in lock material block
11 front end；Lock material portion 111 has the mortgage face for being used for compressing plate 3, and the mortgage face is plane；Connection end 113 is formed in lock
The afterbody of material block 11, the afterbody can coordinate with dynamic equipment；Pivot part 112 is formed in the mid portion of lock material block 11, with first
Cantilever 13 is pivotally connected, can be with 12 pivot joint of the first pivot；By the pivot 12 at pivot part 112, and dynamic equipment 17 is lock
Material block 11 provides power, and lock material block 11 can be made to rotate along first pivot 12.When in use, the rotation makes lock material portion 111
Position change, for compress plate 3 or unclamp plate 3.Specifically how to compress, can be illustrated below in specification.
Above-mentioned dynamic equipment 17 is gone on to say, one end of dynamic equipment 17 is connected with connecting portion 113 as described above, the other end and
Two cantilevers 19 coordinate.
The structure of dynamic equipment can have many kinds, and such as pneumatic cylinder, hydraulic cylinder, motor, cam structure etc. can be realized
Power is provided for lock material block 11 so as to rotate around the first pivot 12.
The preferred structure of dynamic equipment is illustrated below, and with continued reference to Fig. 1 and Fig. 2, dynamic equipment 17, one end are led to connecting portion 113
15 pivot joint of the second pivot is crossed, by 18 pivot joint of the 3rd pivot, dynamic equipment 17 drives 11 edge of lock material block for the other end and the second cantilever 19
First pivot 12 is rotated.Pressure actuation device, such as pneumatic cylinder, hydraulic cylinder are generally using the dynamic equipment of this structure.Its
Including pressure cylinder and piston rod, pressure cylinder bottom and 19 pivot joint of the second cantilever, piston rod and 113 pivot joint of connecting portion.
On the other hand, dynamic equipment 17 can also be cam, and cam directly coordinated with connecting portion 113, expects lock by cam
Block is rotated.
Be pneumatic cylinder or during hydraulic cylinder in dynamic equipment 17, piston rod top is formed with connector 16, connector 16 be connected
113 pivot joint of portion.Preferably, connector 16 is U-shaped connector, and connecting portion 113 is the projection stretched out, and the projection stretched out stretches into U
In the U-type groove of type joint, then with 15 pivot joint of the second pivot.
Plate locking device described above 1 can be used for compressing to plate 3, prevent from jumping in pressing process, tool
Body can be together illustrated with reference to following compacting tool set, in order to understand.
Compacting tool set disclosed in the present application, referring to Fig. 4, including：Upper mould (not shown), lower mould 4, and above-mentioned plate
Locking device 1 (hereinafter referred to as locking device 1).Blank holder 41 is formed with above-mentioned lower mould 4, locking device 1 is fixed with lower mould 4
It is set together, lock material block 11 is located at the top of blank holder 41, and can rotate under the drive of dynamic equipment 17, with blank holder 41
Plate 4 is compressed together.From the foregoing it will be appreciated that dynamic equipment 17 drives the motion of lock material block 11, and it is in compacted position
Move and ejected position between, compacted position locks material block 11 and blank holder 41 is matched for clamping tightly plate together, and ejected position is locked
Material block 11 and blank holder 41 are not extruded to plate, to facilitate the placement of plate and remove.
In order to clearly illustrate each several part in Fig. 4, mould is eliminated.
Above-mentioned blank holder 41 is generally " convex " shape, i.e., the structure in middle high, both sides bottom, and can be according to need between height
Cambered surface or can also be using the face with corner angle is adopted.These are determined according to product net shape.Above-mentioned lock material block
11 tops for being located at blank holder 41, also refer to positioned at the top of 41 higher position of blank holder.Coordinate with 41 highest point of blank holder, it is real
The now clamping to plate.
As lock material block 11 is before blank holder 41, in order to avoid affecting the formation of upper film, in the locking of upper mould correspondence
The position of device 1, forms slot to make way (not shown).General lock material block is to lock material portion 111 directly and blank holder 41 when compressing
Coordinate, and lock material portion 111 can't volume it is excessive, therefore upper mould also will not carry out big transformation because of slot to make way is opened up, no
Its intensity can be affected.
In a preferred embodiment, compacting tool set also includes：Cambered surface detent mechanism 2, its function are at the beginning of plate
During dress, for lifting plate.Its face lifted is not less than the highest face of blank holder 41, so as to facilitate locking device 1 with pressure
Flange 41 clamps plate follow-up.
General, in such as Fig. 4, cambered surface detent mechanism 2 is arranged on the corner of the lower mould.Referring to Fig. 5, cambered surface positioning
Mechanism base 23, support block 24, cambered surface location-plate 21 and retainer block 22；Base 23 is fixedly connected with the lower mould, support block 24
It is fixedly installed on the base 23；Cambered surface location-plate 21 is fixedly installed on base 23, and is resisted against in the support block 24,
The through hole stretched out for retainer block 22 is formed with cambered surface location-plate 21；Retainer block 22 is rotated with support block 24 and is connected.
Retainer block 22 is rotated between the first position and the second position；First position is that the retainer block 22 leads to from described
Stretch out in hole, for lifting plate；The second place is that the surface of retainer block 22 and cambered surface location-plate 21 is flush or below the arc
The surface of face location-plate 21.
Above-mentioned retainer block 22 can be connected using the resilient rotation of tool with support block 24, and the position that elasticity is recovered is first
Position.
When in use, first plate 3 is prevented on retainer block 22, locking device 1 clamps plate 3, upper mould with blank holder 41
Move down, along the shape compacting plate 3 of blank holder, under the pressure of upper mould, retainer block 22 is rotated to the second place, Bu Huiying
Ring compacting work.
In a preferred embodiment, retainer block 22 can be electronic, and have control circuit control, can with
After compacting terminates, retainer block 22 can also hold up the plate for suppressing, convenient to pick up, showing during the compacting work illustrated in Fig. 6
It is intended to, the work that the plate to suppressing holds up can not be carried out.
Plate after compacting may refer to Fig. 6, only illustrate the compacting tool set of half in Fig. 6, and eliminate mould and under
Mould, with clearly can find out compacting after plate 3, locking be filled with and cambered surface detent mechanism 2 between relation.
As described above, the face lifted by cambered surface detent mechanism 2 is not less than the highest face of blank holder 41, i.e. retainer block
22 when being located at first position, for lifting the height of the height in the face of plate greater than or equal to blank holder 41, in other words higher than or
Equal to the maximum height of blank holder 41.
The dynamic equipment of the plate locking device of the present invention drives lock material block to rotate, and can realize the limit function to plate,
Reduce or avoid jumping for plate.Further, the compacting tool set that the application is provided, employs above-mentioned plate locking device,
And the cooperation with blank holder, further fasten plate, it is to avoid which jumps, go up mould in addition and be formed with slot to make way, will not change
The operation of compacting, it is ensured that while normal compacting flow process and efficiency, reduce the scrappage of plate.
Construction, feature and the action effect of the present invention, above institute is described in detail above according to the embodiment shown in schema
Only presently preferred embodiments of the present invention is stated, but the present invention is not to limit practical range shown in drawing, it is every according to structure of the invention
Want made change, or be revised as the Equivalent embodiments of equivalent variations, when still covered with diagram without departing from specification spiritual,
All should be within the scope of the present invention.
Claims (8)
1. a kind of plate locking device, it is characterised in that include：
Mounting seat (14), is formed with the first cantilever (13) and the second cantilever (19) in the same side of the mounting seat (14)；
Lock material block (11), with the lock material portion (111), the connecting portion (113) for being formed at rear end that are formed at front end, and is formed at
Between pivot part (112), the pivot part (112) and first cantilever (13) are by the first pivot (12) pivot joint；
Dynamic equipment (17), one end are coordinated with the connecting portion (113), and the other end is coordinated with second cantilever (19), and is driven
Lock material block (11) is rotated along first pivot (12).
2. plate locking device according to claim 1, it is characterised in that
The dynamic equipment (17), one end is with the connecting portion (113) by the second pivot (15) pivot joint, the other end and described second
By the 3rd pivot (18) pivot joint, the dynamic equipment (17) drives lock material block (11) along first pivot to cantilever (19)
(12) rotate.
3. plate locking device according to claim 2, it is characterised in that
The dynamic equipment (17) is pressure actuation device, including pressure cylinder and piston rod, and the pressure cylinder bottom is outstanding with described second
Arm (19) pivot joint, the piston rod and the connecting portion (113) pivot joint.
4. plate locking device according to claim 3, it is characterised in that
The piston rod top is formed with connector (16), the connector (16) and the connecting portion (113) pivot joint.
5. a kind of compacting tool set, it is characterised in that include：
Upper mould；
Lower mould (4), is formed with blank holder (41) on the lower mould (4)；
Plate locking device described in any one of claim 1-4, the plate locking device are set with lower mould (4) fixation
Put, lock material block (11) is positioned at the top of the blank holder (41), and under the drive of the dynamic equipment (17), and described
Blank holder (41) compresses plate (3) jointly；
The position of the mould correspondence plate locking device, forms slot to make way on described.
6. compacting tool set according to claim 5, it is characterised in that also include：
Cambered surface detent mechanism (2), is arranged on the corner of the lower mould (4)；
The cambered surface detent mechanism (2) includes base (23), support block (24), cambered surface location-plate (21) and retainer block (22)；
The base (23) is fixedly connected with the lower mould (4), and the support block (24) is fixedly installed on the base (23)；
The cambered surface location-plate (21) is fixedly installed on the base (23), and is resisted against in the support block (24), described
The through hole stretched out for the retainer block (22) is formed with cambered surface location-plate (21)；
The retainer block (22) is rotated with the support block (24) and is connected.
7. compacting tool set according to claim 6, it is characterised in that
The retainer block (22) rotates between the first position and the second position；
The first position is that the retainer block (22) is stretched out from the through hole, for lifting the plate (3)；
The second place is, the surface of the retainer block (22) and the cambered surface location-plate (21) is flush or below the cambered surface
The surface of location-plate (21).
8. compacting tool set according to claim 7, it is characterised in that
The retainer block (22) positioned at the first position when, the height for lifting the face of the plate (3) is greater than or equal to
The height of the blank holder (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014738.9A CN106513485A (en) | 2016-11-18 | 2016-11-18 | Plate locking device and pressing die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611014738.9A CN106513485A (en) | 2016-11-18 | 2016-11-18 | Plate locking device and pressing die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106513485A true CN106513485A (en) | 2017-03-22 |
Family
ID=58352372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611014738.9A Pending CN106513485A (en) | 2016-11-18 | 2016-11-18 | Plate locking device and pressing die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106513485A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047442A (en) * | 2018-08-23 | 2018-12-21 | 四川成飞集成科技股份有限公司 | A kind of drawing die arc backgauge simulation frame |
| CN111872210A (en) * | 2020-06-29 | 2020-11-03 | 瑞鹄汽车模具股份有限公司 | Die blank positioning method for process data mining |
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| JPS5924536A (en) * | 1982-07-30 | 1984-02-08 | Nissan Motor Co Ltd | Blank material positioning mechanism of drawing press |
| CN101653808A (en) * | 2009-04-24 | 2010-02-24 | 天津汽车模具股份有限公司 | Tension spring type steel plate locating device for automobile steel plate drawing mould |
| CN201791855U (en) * | 2010-07-30 | 2011-04-13 | 瑞鹄汽车模具有限公司 | Rotary pressing and positioning device of drawing die |
| CN202845623U (en) * | 2012-09-26 | 2013-04-03 | 麦格纳技术与模具系统（天津）有限公司 | Board locating mechanism for automobile covering part drawing mould |
| CN103100597A (en) * | 2011-11-15 | 2013-05-15 | 北汽福田汽车股份有限公司 | Positioning mechanism for die and pouching die |
| CN203695797U (en) * | 2013-12-20 | 2014-07-09 | 北汽福田汽车股份有限公司 | Drawing die blank positioning device and drawing die |
| CN203955938U (en) * | 2014-07-17 | 2014-11-26 | 奇瑞汽车股份有限公司 | A kind of mould plate fast positioning clamping device |
| CN204209016U (en) * | 2014-10-16 | 2015-03-18 | 富士瑞鹄技研（芜湖）有限公司 | A kind of detent mechanism for stamping die of automotive covering part |
| CN204353269U (en) * | 2014-11-28 | 2015-05-27 | 北京比亚迪模具有限公司 | A kind of positioner |
| CN104889262A (en) * | 2015-07-03 | 2015-09-09 | 安徽江淮汽车股份有限公司 | Mounting structure for material supporting device of drawing mold and drawing mold |
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- 2016-11-18 CN CN201611014738.9A patent/CN106513485A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924536A (en) * | 1982-07-30 | 1984-02-08 | Nissan Motor Co Ltd | Blank material positioning mechanism of drawing press |
| CN101653808A (en) * | 2009-04-24 | 2010-02-24 | 天津汽车模具股份有限公司 | Tension spring type steel plate locating device for automobile steel plate drawing mould |
| CN201791855U (en) * | 2010-07-30 | 2011-04-13 | 瑞鹄汽车模具有限公司 | Rotary pressing and positioning device of drawing die |
| CN103100597A (en) * | 2011-11-15 | 2013-05-15 | 北汽福田汽车股份有限公司 | Positioning mechanism for die and pouching die |
| CN202845623U (en) * | 2012-09-26 | 2013-04-03 | 麦格纳技术与模具系统（天津）有限公司 | Board locating mechanism for automobile covering part drawing mould |
| CN203695797U (en) * | 2013-12-20 | 2014-07-09 | 北汽福田汽车股份有限公司 | Drawing die blank positioning device and drawing die |
| CN203955938U (en) * | 2014-07-17 | 2014-11-26 | 奇瑞汽车股份有限公司 | A kind of mould plate fast positioning clamping device |
| CN204209016U (en) * | 2014-10-16 | 2015-03-18 | 富士瑞鹄技研（芜湖）有限公司 | A kind of detent mechanism for stamping die of automotive covering part |
| CN204353269U (en) * | 2014-11-28 | 2015-05-27 | 北京比亚迪模具有限公司 | A kind of positioner |
| CN104889262A (en) * | 2015-07-03 | 2015-09-09 | 安徽江淮汽车股份有限公司 | Mounting structure for material supporting device of drawing mold and drawing mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047442A (en) * | 2018-08-23 | 2018-12-21 | 四川成飞集成科技股份有限公司 | A kind of drawing die arc backgauge simulation frame |
| CN111872210A (en) * | 2020-06-29 | 2020-11-03 | 瑞鹄汽车模具股份有限公司 | Die blank positioning method for process data mining |
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Application publication date: 20170322 |