CN105057381B - Cold extruding die capable of changing metallographic streamline mark collecting position of product - Google Patents
Cold extruding die capable of changing metallographic streamline mark collecting position of product Download PDFInfo
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- CN105057381B CN105057381B CN201510505756.6A CN201510505756A CN105057381B CN 105057381 B CN105057381 B CN 105057381B CN 201510505756 A CN201510505756 A CN 201510505756A CN 105057381 B CN105057381 B CN 105057381B
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Abstract
The invention discloses a cold extruding die capable of changing a metallographic streamline mark collecting position of a product. The cold extruding die comprises an upper die (1) and a lower die (2). The upper die adopted by the cold extruding die is formed by an upper die plate, a movable pressing plate, an upper puncher pin, springs, an upper sliding block and an upper air cylinder. The upper sliding block is driven by the upper air cylinder to be inserted into or separated from the upper face of the movable pressing plate. The lower die is formed by a lower die plate, a lower sliding block, a lower air cylinder, a double-linkage oil cylinder and a lower puncher pin. The lower sliding block is driven by the lower air cylinder to be inserted into or separated from the upper face of the lower die plate. During working, by inserting or separating the upper sliding block and the lower sliding block, die closing and die opening are carried out in three times, and a blank B is extruded into a blank C, a blank D and a blank E step by step, so that the technical scheme that a metallographic streamline collecting mark is formed in the internal position of the product is changed, and the purposes of avoiding fractures and prolonging the service life of the product are achieved.
Description
Technical field
The present invention relates to a kind of cold extrusion molding mould, specifically refer to for cold extrusion shaped bearing automobile pitman arm vibration damping
A kind of change product metallographic streamline of the connector product of support collects the cold extrusion die of trace position.
Background technology
Cold extrusion product is referred to as by the metallic article that cold-extrusion technology is molded by press and cold extrusion die；For carrying
The connector of automobile steering arm damping frame is the cold extrusion product of carbon steel, hereinafter referred to as connector, and connector is by connecting
Ring 061, shoulder block disk 062 and upper prop 063 are constituted, refering to Figure 11, Figure 12；
In actual applications, service life is short, is easily broken for the connector of prior art cold extrusion die shaping, fracture
Position concentrates on shoulder block Pan062Chu；The life-span of load vibration distortion destructive testing is 3~40,000 times, and fracture position is all concentrated
In shoulder block Pan062Chu；
To find out its cause, from metal lographic examination etch section, ASTME3-01 (2007) standard, refering to Figure 14, connector is cold
The metallographic streamline that flow of metal is formed during extrusion forming comes together in the shoulder block Pan062Chu of connector, i.e. the metallographic of connector
Streamline collects trace 09 and is formed in shoulder block Pan062Chu, and the knot of tissue at trace is collected due to the metallographic streamline of carbon steel cold extrusion product
Structure is easily layered, and causes the fragile link for being easy to fracture at this as connector, but it is connection that problem is due precisely to shoulder block disk 062
The main bearing load position of device；Therefore, prior art exists and the problems and shortcomings being broken, service life is short easily occurs.
The content of the invention
For the problems and shortcomings that above-mentioned prior art is present, the present invention uses the device being made up of upper die and lower die, its
In, upper mould is made up of upper die plate, movable pressing board, upper punch, spring, top shoe and upper cylinder, and upper die plate is provided with upper hopper chute and upper
Die cavity, the upper end of upper punch is fixed on center below movable pressing board, and movable pressing board is slided in upper hopper chute, and upper punch is slided on
In upper impression, two springs are respectively provided at the right and left of upper hopper chute bottom land and upward elasticity supports movable pressing board；Upper die plate
Being respectively arranged on the left side and the right side for top is driven by upper cylinder, can be slidably inserted into or detach the top shoe above movable pressing board；Lower mould
It is made up of lower template, sliding block, lower cylinder, duplex oil cylinder, low punch, lower template is provided with lower impressions, the left and right on lower template top
It is respectively provided on two sides with and is driven by lower cylinder, can be slidably inserted into or detach the sliding block above lower template；Duplex oil cylinder is by cylinder body
The united hydraulic telescopic device of double pressures constituted with big piston and valve piston；Duplex oil cylinder is located at below lower template, low punch
The upper end of valve piston is connected to, the top of low punch is slided in lower impressions；
Using when, upper impression is corresponding with lower impressions, and upper mould is fixedly connected with below press walking beam, lower mould and press work
It is fixedly connected as platform；
Before work, by other press with mould first by A blank formings into B blanks；
During work, B blanks are loaded into lower impressions, start upper cylinder by top shoe insertion pad above movable pressing board, together
When, starting lower cylinder by sliding block insertion pad above lower template, press walking beam promotes the downward matched moulds of upper mould, starts duplex
Pushed up on the big piston of oil cylinder, big piston drives low punch to eject upwards through valve piston, upper punch, upper impression, low punch, lower impressions
Common is C blanks by B blanks extrusion forming, is molded afterwards；Start lower cylinder to detach above lower template sliding block, close again
Mould, due to detaching for sliding block, it is D blanks by C blanks extrusion forming that upper punch, upper impression, low punch and lower impressions are common, it
After mold；Start upper cylinder to detach above movable pressing board top shoe, third time matched moulds starts on the valve piston of duplex oil cylinder
Top, due to detaching for top shoe, it is E blanks by D blanks extrusion forming that upper punch, upper impression, low punch and lower impressions are common, it
E blanks are taken out in die sinking afterwards；Afterwards, then by E blanks other press are moved to and mould punching is shaped to connector；By by B blanks
It is the process of E blanks through C blanks, D blanks extrusion forming, metallographic streamline is collected trace and be formed at the upper prop for not carrying Main Load
Place, the technical scheme for being enhanced the mechanical strength of shoulder block Pan Chu, there is provided one kind changes product metallographic streamline and collects trace position
Cold extrusion die, it is intended to reach connector and avoid fracture, the purpose that increases the service life.
The object of the present invention is achieved like this：It is a kind of to change the cold extrusion die that product metallographic streamline collects trace position,
Including upper die and lower die, wherein：Described upper mould is by upper die plate, movable pressing board, upper punch, spring, top shoe and upper cylinder structure
Into the upper die plate is the block steel components of rectangular slab, and center is provided with the rectangular right and left in cross section above upper die plate
To groove be referred to as upper hopper chute, the center of the upper hopper chute bottom land is provided with through hole referred to as mo(u)ld top half of the above-below direction through upper die plate
Chamber, the internal diameter of the upper impression is corresponding with the diameter of the upper prop of connector, and the lower opening's edge of the upper impression is provided with formed connectors
Shoulder block disk upper half slit bamboo or chopped wood type face；The movable pressing board is the steel components of rectangular block shape, and the upper punch is the steel of cylinder
Texture part, vertically protrusion is fixedly connected on center below the movable pressing board to upper punch；Movable pressing board is slidably disposed on described
In chute, upper punch is slided and is through in the upper impression, and two springs are respectively provided at the right and left of the upper hopper chute bottom land simultaneously
Upward elasticity supports movable pressing board；The spring is cylindroid helical-coil compression spring；The groove depth of the upper hopper chute is more than described
The height of movable pressing board；Being respectively arranged on the left side and the right side for upper die plate top is driven by upper cylinder, can be slidably inserted into or detach activity
Top shoe above pressing plate, the top shoe is the steel components of rectangular block shape；
Described lower mould is made up of lower template, sliding block, lower cylinder, duplex oil cylinder and low punch, and the lower template is square
The plate-like steel components of shape, the center of lower template is provided with above-below direction, the manhole referred to as lower impressions through lower template, institute
The internal diameter for stating lower impressions is corresponding with the diameter of the lower prop of E blanks, and the upper edge of the lower impressions is provided with the shoulder block of formed connectors
The lower half slit bamboo or chopped wood type face of disk；Being respectively arranged on the left side and the right side for lower template top is driven by lower cylinder, can be slidably inserted into or detach lower mould
Sliding block above plate, the sliding block is the steel components of rectangular block shape；The duplex oil cylinder be by cylinder body and big piston with
The united hydraulic telescopic device of double pressures that valve piston is constituted, the low punch is the steel components of cylinder；Duplex oil cylinder is located at
Below lower template, low punch is connected to the upper end of valve piston, and the top of low punch is slided in lower impressions.
Operation principle and beneficial effect
Using connection, upper impression is corresponding with lower impressions upper-lower position, and upper mould is fixedly connected on below press walking beam, under
Mould is fixedly connected on above press bed.
Need to be after A blanks, B blanks, C blanks, D blanks, E blanks and the road work of connector six using present apparatus processing connection ring
Program process, C blanks therein, D blanks and E blanks process are completed to process by the present apparatus, therefore, before present apparatus work, first
By other press and mould by A blank formings into B blanks.
During work, B blanks are loaded into lower impressions, start upper cylinder by top shoe insertion pad above movable pressing board, together
When, starting lower cylinder by sliding block insertion pad above lower template, press walking beam drives the downward first time matched moulds of upper mould, closes
Start item on the big piston of duplex oil cylinder after mould, big piston driving valve piston and low punch are ejected upwards, due to inserting for top shoe
Enter, effective chamber of upper impression shoals；Due to the insertion of sliding block, produce spacing between upper die plate and lower template, upper punch, on
B blanks extrusion forming is jointly C blanks by die cavity, low punch, lower impressions, is molded for the first time afterwards；
Start lower cylinder to detach above lower template sliding block, second matched moulds, due to detaching for sliding block, upper die plate
Spacing is eliminated between lower template, it is D bases by C blanks extrusion forming that upper punch, upper impression, low punch and lower impressions are common
Part, now metallographic streamline collect trace and be formed in shoulder block Pan Chu, mold for second afterwards；
Start upper cylinder to detach above movable pressing board top shoe, third time matched moulds starts the valve piston of duplex oil cylinder
Upper top, valve piston drives low punch to eject upwards, due to detaching for top shoe, effective chamber of upper impression increase it is deep, upper punch, on
It is E blanks by D blanks extrusion forming that die cavity, low punch and lower impressions are common, and now metallographic streamline collects trace and moved by shoulder block Pan Chu
To upper prop, E blanks are taken out in third time die sinking afterwards；Afterwards, then by E blanks other press and mould are moved to, by under E blanks
Post punch forming is connection ring, obtains the manufactured goods of connector.
The present apparatus with a secondary mould, by way of substep combination pulls and pushes top shoe and sliding block, by B blanks through C blanks,
D blanks extrusion forming is the process of E blanks, causes metallographic streamline to collect trace and is formed at the upper prop for not carrying Main Load, makes to hold
The mechanical strength for carrying the shoulder block Pan Chu of Main Load is enhanced.
Experiment
Through the connector that the present apparatus participates in making：
ASTME3-01 (2007) standard, metal lographic examination etching section, metallographic streamline collects trace and is formed at upper prop；
The destructive testing life-span of load vibration distortion, more than 400,000 times.
Above-mentioned, the present invention uses the device being made up of upper die and lower die, wherein, upper mould is by upper die plate, movable pressing board, upper punching
Head, spring, top shoe and upper cylinder are constituted, and upper die plate is provided with upper hopper chute and upper impression, and the upper end of upper punch is fixed on movable pressure
Center below plate, movable pressing board is slided in upper hopper chute, and upper punch is slided in upper impression, and two springs are respectively provided at cunning
Simultaneously elasticity supports movable pressing board to the right and left of groove bottom land upwards；Upper die plate top is respectively arranged on the left side and the right side by upper cylinder
Drive, can be slidably inserted into or detach the top shoe above movable pressing board；Lower mould is by lower template, sliding block, lower cylinder, duplex oil
Cylinder, low punch are constituted, and lower template is provided with lower impressions, and being respectively arranged on the left side and the right side for lower template top is driven by lower cylinder, can slided
It is dynamic to insert or detach the sliding block above lower template；Duplex oil cylinder is that the double pressures being made up of with valve piston cylinder body and big piston are combined
Hydraulic telescopic device；Duplex oil cylinder is located at below lower template, and low punch is connected to the upper end of valve piston, the top of low punch
Slide in lower impressions；
Using when, upper impression is corresponding with lower impressions, and upper mould is fixedly connected with below press walking beam, lower mould and press work
It is fixedly connected as platform；
Before work, by other press with mould first by A blank formings into B blanks；
During work, B blanks are loaded into lower impressions, start upper cylinder by top shoe insertion pad above movable pressing board, together
When, starting lower cylinder by sliding block insertion pad above lower template, press walking beam promotes the downward matched moulds of upper mould, starts duplex
Item on the big piston of oil cylinder, big piston drives low punch to eject upwards through valve piston, upper punch, upper impression, low punch, lower impressions
Common is C blanks by B blanks extrusion forming, is molded afterwards；Start lower cylinder to detach above lower template sliding block, close again
Mould, due to detaching for sliding block, it is D blanks by C blanks extrusion forming that upper punch, upper impression, low punch and lower impressions are common, it
After mold；Start upper cylinder to detach above movable pressing board top shoe, third time matched moulds starts on the valve piston of duplex oil cylinder
Top, due to detaching for top shoe, it is E blanks by D blanks extrusion forming that upper punch, upper impression, low punch and lower impressions are common, it
E blanks are taken out in die sinking afterwards；Afterwards, then by E blanks other press are moved to and mould punching is shaped to connector；By by B blanks
It is the process of E blanks through C blanks, D blanks extrusion forming, metallographic streamline is collected trace and be formed at the upper prop for not carrying Main Load
Place, the technical scheme for being enhanced the mechanical strength of shoulder block Pan Chu overcomes prior art and there is easily generation fracture, uses the longevity
A kind of short problems and shortcomings of life, the change product metallographic streamline for being provided collects the cold extrusion die of trace position, makes connector
The purpose for avoiding fracture occurring, increases the service life is reached.
Brief description of the drawings
Fig. 1 is the main view sectional structure of the cold extrusion die that a kind of change product metallographic streamline of the invention collects trace position
Schematic diagram；
Fig. 2 is the cold extrusion die that a kind of change product metallographic streamline of the invention collects trace position, is operated in for the first time
The principle schematic of tense before matched moulds；
Fig. 3 is the cold extrusion die that a kind of change product metallographic streamline of the invention collects trace position, is operated in second
The principle schematic of tense before matched moulds；
Fig. 4 is the cold extrusion die that a kind of change product metallographic streamline of the invention collects trace position, is operated in third time
The principle schematic of tense before matched moulds；
Fig. 5 is the cold extrusion die that a kind of change product metallographic streamline of the invention collects trace position, is operated in third time
The principle schematic of tense after die sinking；
Fig. 6 is the front view of heretofore described A blanks 01；
Fig. 7 is the front view of heretofore described B blanks 02；
Fig. 8 is the front view of heretofore described C blanks 03；
Fig. 9 is the front view of heretofore described D blanks 04；
Figure 10 is the front view of heretofore described E blanks 05；
Figure 11 is a kind of front view of connector 06；
Figure 12 is Figure 11 side views；
The metallographic of Figure 13 connectors of the present invention etches the schematic diagram of section 07, ASTME3-01 (2007) standard；
The metallographic of Figure 14 prior art connectors etches the schematic diagram of section 08, ASTME3-01 (2007) standard.
Embodiment in below in conjunction with the accompanying drawings is described in further detail to the present invention, but should not be construed as to of the invention
Any limitation.
In figure：Upper mould 1, upper die plate 11, upper hopper chute 111, upper impression 12, movable pressing board 13, upper punch 14, spring 15, on
Sliding block 16, upper cylinder 17, guide pillar 18, lower mould 2, lower template 21, lower impressions 22, sliding block 23, lower cylinder 24, duplex oil cylinder 25,
Big piston 251, valve piston 252, low punch 26, A blanks 01, B blanks 02, C blanks 03, D blanks 04, E blanks 05, lower prop 051,
Connector 06, connection ring 061, shoulder block disk 062, upper prop 063, the metallographic etching section 07, prior art of connector of the present invention connect
Connect the metallographic etching section 08 of device, metallographic streamline and collect trace 09, press bed 010, press walking beam 011.
Specific embodiment
Refering to Fig. 1~Figure 10 and Figure 13, a kind of change product metallographic streamline of the invention collects the cold extruding die of trace position
Tool, including upper mould 1 and lower mould 2, wherein：Described upper mould 1 by upper die plate 11, movable pressing board 13, upper punch 14, spring 15, on
Sliding block 16 and upper cylinder 17 are constituted, and the upper die plate 11 is the block steel components of rectangular slab, and center sets above upper die plate 11
There is the groove referred to as upper hopper chute 111 of the rectangular left and right directions in cross section, the center of the bottom land of the upper hopper chute 111 is provided with upper and lower
It is referred to as the diameter of upper impression 12, the internal diameter of the upper impression 12 and the upper prop 063 of connector 06 to the through hole through upper die plate 11
Correspondence, the lower opening's edge of the upper impression 12 is provided with the upper half slit bamboo or chopped wood type face of the shoulder block disk 062 of formed connectors 06；The movable pressing board
13 is the steel components of rectangular block shape, and the upper punch 14 is the steel components of cylinder, and upper punch 14 vertically protrudes fixed company
It is connected on center below the movable pressing board 13；Movable pressing board 13 is slidably disposed in the upper hopper chute 111, and upper punch 14 is slided and worn
In the upper impression 12, two springs 15 are respectively provided at the right and left of the bottom land of the upper hopper chute 111 and flexibly support upwards
Movable pressing board 13；The spring 15 is cylindroid helical-coil compression spring；The groove depth of the upper hopper chute 111 is more than the activity pressure
The height of plate 13；Being respectively arranged on the left side and the right side for the top of upper die plate 11 drives, can be slidably inserted into or detaches activity by upper cylinder 17
Top shoe 16 above pressing plate 13, the top shoe 16 is the steel components of rectangular block shape；
Described lower mould 2 is made up of lower template 21, sliding block 23, lower cylinder 24, duplex oil cylinder 25 and low punch 26, described
Lower template 21 is the block steel components of rectangular slab, and the center of lower template 21 is provided with above-below direction, the circle through lower template 21
Through hole is referred to as lower impressions 22, and the internal diameter of the lower impressions 22 is corresponding with the diameter of the lower prop 051 of E blanks 05, the lower impressions 22
Upper edge be provided with formed connectors 06 shoulder block disk 062 lower half slit bamboo or chopped wood type face；The left and right sides on the top of lower template 21 sets respectively
Have and drive, can be slidably inserted into or detach sliding block 23 above lower template 21 by lower cylinder 24, the sliding block 23 is rectangular block
The steel components of shape；The duplex oil cylinder 25 is the united hydraulic pressure of double pressures being made up of with valve piston 252 cylinder body and big piston 251
Retractor device, the low punch 26 is the steel components of cylinder；Duplex oil cylinder 25 is located at below lower template 21, low punch 26
The upper end of valve piston 252 is connected to, the top of low punch 26 is slided in lower impressions 22.
Operation principle and beneficial effect
Using connection, upper impression 12 is corresponding with the upper-lower position of lower impressions 22, and upper mould 1 is fixedly connected on press walking beam 011
Below, lower mould 2 is fixedly connected on above press bed 010.
Need to be after A blanks 01, B blanks 02, C blanks 03, D blanks 04, E blanks 05 using present apparatus processing connection ring 061
With the procedure process of connector 06 6, C blanks 03 therein, D blanks 04 and the process of E blanks 05 are completed to add by the present apparatus
Work, therefore, before present apparatus work, A blanks 01 are first processed into B blanks 02 by other press and mould.
During work, B blanks 02 are loaded into lower impressions 22, start upper cylinder 17 by the insertion pad of top shoe 16 in movable pressing board 13
Above, meanwhile, start lower cylinder 24 by the insertion pad of sliding block 23 above lower template 21, press walking beam 011 drive on
The downward first time matched moulds of mould 1, starts after matched moulds and pushed up on the big piston 251 of duplex oil cylinder 25, and big piston 251 drives valve piston 252
Ejected upwards with low punch 26, due to the insertion of top shoe 16, effective chamber of upper impression 12 shoals；Due to inserting for sliding block 23
Enter, spacing is produced between upper die plate 11 and lower template 21, upper punch 14, upper impression 12, low punch 26, lower impressions 22 are common by B
The extrusion forming of blank 02 is C blanks 03, is molded for the first time afterwards；
Start lower cylinder 24 to detach above lower template 21 sliding block 23, second matched moulds, due to taking out for sliding block 23
From, spacing is eliminated between upper die plate 11 and lower template 21, upper punch 14, upper impression 12, low punch 26 and lower impressions 22 are common
It is D blanks 04 by the extrusion forming of C blanks 03, now metallographic streamline collects trace 09 and is formed in shoulder block Pan062Chu, opens for the second time afterwards
Mould；
Start upper cylinder 17 to detach above movable pressing board 13 top shoe 16, third time matched moulds starts duplex oil cylinder 25
Valve piston 252 on push up, valve piston 252 drives low punch 26 to eject upwards, and due to detaching for top shoe 16, upper impression 12 has
Effect chamber increases deeply, and it is E blanks by the extrusion forming of D blanks 04 that upper punch 14, upper impression 12, low punch 26 and lower impressions 22 are common
05, now metallographic streamline collect trace 09 upper prop 063 moved to by shoulder block Pan062Chu, E blanks 05 are taken out in third time die sinking afterwards；
Afterwards, then by E blanks 05 other press and mould are moved to, is connection ring 061 by the punch forming of lower prop 051 of E blanks 05, obtained
The manufactured goods of connector 06.
The present apparatus passes through B blanks 02 with a secondary mould, by way of substep combination pulls and pushes top shoe 16 and sliding block 23
C blanks 03, the extrusion forming of D blanks 04 are the process of E blanks 05, cause metallographic streamline to collect trace 09 and be formed at and do not carry Main Load
Upper prop 063 at, be enhanced the mechanical strength of the shoulder block Pan062Chu of carrying Main Load.
Experiment
Through the connector that the present apparatus participates in making：
ASTME3-01 (2007) standard, metal lographic examination etching section, metallographic streamline collects trace 09 and is formed at upper prop 063
Place；
The destructive testing life-span of load vibration distortion, more than 400,000 times.
Claims (1)
1. it is a kind of to change the cold extrusion die that product metallographic streamline collects trace position, including upper mould (1) and lower mould (2), its feature
It is：Described upper mould (1) by upper die plate (11), movable pressing board (13), upper punch (14), spring (15), top shoe (16) and
Upper cylinder (17) is constituted, and the upper die plate (11) is the block steel components of rectangular slab, and center is provided with above upper die plate (11)
The groove of the rectangular left and right directions in cross section is referred to as upper hopper chute (111), and the center of upper hopper chute (111) bottom land is provided with up and down
Direction is referred to as upper impression (12), the internal diameter of the upper impression (12) and the upper prop of connector (06) through the through hole of upper die plate (11)
(063) diameter correspondence, the lower opening's edge of the upper impression (12) is provided with the upper half slit bamboo or chopped wood of the shoulder block disk (062) of formed connectors (06)
Type face；The movable pressing board (13) is the steel components of rectangular block shape, and the upper punch (14) is the steel components of cylinder, on
Vertically protrusion is fixedly connected on center below the movable pressing board (13) to drift (14)；Movable pressing board (13) is slidably disposed in described
In upper hopper chute (111), upper punch (14) is slided and is through in the upper impression (12), and two springs (15) are respectively provided at the upper cunning
Simultaneously elasticity supports movable pressing board (13) to the right and left of groove (111) bottom land upwards；The spring (15) is compressed for cylindrical screw
Spring；Height of the groove depth of the upper hopper chute (111) more than the movable pressing board (13)；The left and right two on upper die plate (11) top
Side is respectively equipped with and is driven by upper cylinder (17), can be slidably inserted into or detach movable pressing board (13) top shoe (16) above, described
Top shoe (16) is the steel components of rectangular block shape；
Described lower mould (2) is by lower template (21), sliding block (23), lower cylinder (24), duplex oil cylinder (25) and low punch (26)
Constitute, the lower template (21) is the block steel components of rectangular slab, the center of lower template (21) is provided with above-below direction, run through under
The manhole of template (21) is referred to as lower impressions (22), the internal diameter of the lower impressions (22) and the lower prop (051) of E blanks (05)
Diameter correspondence, the upper edge of the lower impressions (22) is provided with the lower half slit bamboo or chopped wood type face of the shoulder block disk (062) of formed connectors (06)；Under
Being respectively arranged on the left side and the right side for template (21) top is driven by lower cylinder (24), can be slidably inserted into or detach lower template (21) above
Sliding block (23), the sliding block (23) is the steel components of rectangular block shape；The duplex oil cylinder (25) is by cylinder body and big
The united hydraulic telescopic device of double pressures that piston (251) is constituted with valve piston (252), the low punch (26) is the steel of cylinder
Texture part；Below lower template (21), low punch (26) is connected to the upper end of valve piston (252) to duplex oil cylinder (25), under
The top of drift (26) is slided in lower impressions (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510505756.6A CN105057381B (en) | 2015-08-11 | 2015-08-11 | Cold extruding die capable of changing metallographic streamline mark collecting position of product |
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| CN201510505756.6A CN105057381B (en) | 2015-08-11 | 2015-08-11 | Cold extruding die capable of changing metallographic streamline mark collecting position of product |
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| CN105057381B true CN105057381B (en) | 2017-05-24 |
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| CN105537303B (en) * | 2015-12-30 | 2018-03-30 | 广东潮宏基实业股份有限公司 | Improve the processing method and its equipment of gold product hardness |
| CN105599343B (en) * | 2015-12-31 | 2017-05-31 | 江苏大通精密机械零部件有限公司 | A kind of automatic die clamping device |
| CN109382418A (en) * | 2017-08-09 | 2019-02-26 | 广东兴发铝业有限公司 | A kind of vertical die-sinking machine producing aluminum profile |
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| CN201257486Y (en) * | 2008-08-21 | 2009-06-17 | 慈溪市丰盈电声配件有限公司 | One mould two stamping oil-hydraulic press |
| CN101508004A (en) * | 2009-03-20 | 2009-08-19 | 华中科技大学 | Sedan gear-box axle piece cold finish-forging formation method and die |
| JP2012035292A (en) * | 2010-08-05 | 2012-02-23 | Honda Motor Co Ltd | Forging mold of rod-like workpiece and method for forging the rod-like workpiece |
| CN203281692U (en) * | 2013-04-26 | 2013-11-13 | 天津太平洋超高压设备有限公司 | Shallow corrugated metal sheet hydraulic machine |
| CN204866879U (en) * | 2015-08-11 | 2015-12-16 | 宁波佳比佳工贸有限公司 | Change cold extruding die that goods metallography streamline collects trace position |
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| CN105057381A (en) | 2015-11-18 |
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