CN105014159B - Planetary gear train-plane screw type bar end hot molding mechanism - Google Patents
Planetary gear train-plane screw type bar end hot molding mechanism Download PDFInfo
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- CN105014159B CN105014159B CN201510415393.7A CN201510415393A CN105014159B CN 105014159 B CN105014159 B CN 105014159B CN 201510415393 A CN201510415393 A CN 201510415393A CN 105014159 B CN105014159 B CN 105014159B
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Abstract
The invention discloses a planetary gear train-plane screw type bar end hot molding mechanism. The planetary gear train-plane screw type bar end hot molding mechanism is characterized in that a material containing platform used for mounting of heated bars and a bar clamping device are included; hot molding devices are arranged on the two sides of the material containing platform respectively and comprise supporting platforms, motors, spindles, planet carriers and sun wheels; the motors are fixed to the supporting platforms; the spindles are coaxially and fixedly connected with driving shafts of the motors; the planet carriers are coaxially and fixedly connected with the spindles; the sun wheels are located in the planet carriers and fixedly connected with the supporting platforms; two planet wheels arranged symmetrically along the sun wheels are arranged in the planet carriers in a shaft connection mode and engaged with the sun wheels; a plane screw mechanism is arranged between each planet wheel and the corresponding planet carrier and provided with a molding tool. The planetary gear train-plane screw type bar end hot molding mechanism has the advantages that specific shapes are formed after the ends of the heated bars are extruded to be deformed, and high-quality original bars are provided for cross wedge stub-bar-free rolling; the material utilization rate is high, production efficiency is high, and the structure of the whole mechanism is simple.
Description
Technical field
The present invention relates in Plastic Forming and field of machining bar end hot forming mechanism, more particularly to it is a kind of will
It is processed into the planet circular system-planar spiral-type bar end hot forming mechanism of given shape in the end of the bar after heating.
Background technology
When Regularity of Workpiece of Cross Wedge Rolling shapes, two ends occur that the recessed heart shows when the irregular flowing of metal causes rolled piece finally to shape
As and recessed center portion is allocated as to be cut off for waste material head, which results in the lumber recovery of cross wedge rolling generally below 85%.And
The original blank of rolled piece is generally cylindrical bar-shaped, change bar end shape, such as by bar end processing coning,
The shapes such as truncated cone-shaped, arc, can greatly improve the utilization rate of rolling stock, be the most strong realization nothing of current most effective, versatility
The process of stub bar cross wedge rolling.But in actual production, it is at present general using by the way of cutting or forging processing bar
End shape, and waste material is still present when cutting, the production efficiency of forging all cannot be well than relatively low therefore current method
Meet production requirement, and waste of material is larger.
The content of the invention
The technical problem to be solved is to provide a kind of high stock utilization, production efficiency height and structure is simpler
Planet circular system-planar spiral-type bar end hot forming mechanism.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for：A kind of planet circular system-planar spiral-type bar
End hot forming mechanism, including the putting for bar after for installing heating platform and bar clamping device are expected, described material of putting is put down
The both sides of platform are respectively arranged with structure identical for the thermal forming device of the bar end shape after heating, described heat
Forming device includes support platform, motor, main shaft, planet support body and sun gear, and described motor is fixed on described support and puts down
On platform, described main shaft is fixedly and coaxially connected with the drive shaft of described motor, and described planet support body is same with described main shaft
Axle is fixedly connected, and described sun gear is located in described planet support body and with described support platform and is fixedly connected, described
Two are connected with planet carrier body along the described symmetrically arranged planetary gear of sun gear, described planetary gear and described sun gear
It is meshed, between the planetary gear and described planet support body described in each snail mechanism is provided with, it is flat described in two
Surface helix mechanism is symmetrical arranged along described main shaft, and in the snail mechanism described in each forming tool is both provided with.
Described snail mechanism includes claw, and planet axis are coaxially fixedly installed on described planetary gear, described
Planet axis axle is connected in described planet support body, and described planetary gear is provided with plane towards in the described plane for putting material platform
Screw thread, is provided with the chute of radial direction on described planet support body, one end of described claw stretch into described chute with it is described
Flat thread is engaged, and described planet support body is fixedly installed the slideway of radial direction towards on the described end face for putting material platform,
Described claw radially slides cooperation with described slideway, and described forming tool is fixed with the other end of described claw and connected
Connect.
Described forming tool is disc, what shape and the bar end of the periphery of described forming tool need to process
Shape is identical.
The described upper end for putting material platform is provided with the lower V-groove for the bar after horizontal positioned heating of indent, institute
The bar clamping device stated includes pressing plate and hydraulic cylinder, and described pressing plate is located at the described top for putting material platform, described pressure
Be provided with the lower surface of plate indent and the position upper V-groove corresponding with described lower V-groove, described hydraulic cylinder is fixed
Put on material platform in described, the drive shaft of described hydraulic cylinder is fixedly connected with described pressing plate, for driving described pressure
Plate is moved up and down.
Feeding guide pair be fixedly installed between material platform and ground in described is put, and described feeding guide is secondary and bar
Axially perpendicular, described feeding guide is secondary to include feeding guide and feeding slide block, and described feeding guide is fixed on the ground,
Described feeding slide block is fixedly connected on the described bottom surface for putting material platform, described feeding slide block and described feeding guide
Level is slidably matched；By the secondary adjustable position for putting material platform on feeding guide of feeding guide, realize bar charging and
The material returned, when the dead in line of bar axis and main shaft, pressing plate moves downward compression bar under the driving of hydraulic cylinder, processing
After the completion of, move on pressing plate and unclamp bar.
Roll adjustment guideway, described roll adjustment guideway are fixedly installed between support platform and ground described in one of them
Along the axially arranged of bar, described roll adjustment guideway includes roll adjustment guide rail and roll adjustment slide block, and described roll adjustment guide rail is fixed on
On ground, described roll adjustment slide block is fixedly connected on the bottom surface of described support platform, described roll adjustment slide block with it is described
Roll adjustment guide rail level is slidably matched, described roll adjustment slide block sliding axially along bar；It is adjustable wherein by roll adjustment guideway
The position of one support platform on roll adjustment guide rail, realizes the processing to different length bar.
Described sun gear is 1 with the gear ratio of described planetary gear：7 or 1：8.
Compared with prior art, it is an advantage of the invention that the hot forming for processing bar end shape in mechanism is filled
Put and be driven using the combination of planet circular system and snail mechanism, by the way that snail is secondary claw is driven（Forming tool）Along slideway
Move radially, while the uniform rotation of planet support body is changed into into bar rotary motion of the forming tool after heating radially by
Stepping, forms specific shape, such as cone, truncated cone-shaped, arc after the end generation crimp for making the bar after heating
Deng, high-quality original bar is provided without stub bar rolling for cross wedge rolling, and stock utilization height, production efficiency are high, whole mechanism
Structure it is also simpler.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the front schematic view of the snail mechanism in the embodiment of the present invention one；
Fig. 3 is the cooperation schematic diagram for putting material platform, pressing plate and bar in the embodiment of the present invention one；
Fig. 4 is the structural representation of the embodiment of the present invention two；
Fig. 5 is the structural representation of the embodiment of the present invention three；
Fig. 6 is the structural representation of the roll adjustment guideway in the embodiment of the present invention three；
Fig. 7 is the structural representation of the embodiment of the present invention four.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
Embodiment one：As illustrated, a kind of planet circular system-planar spiral-type bar end hot forming mechanism, including for
That installs the bar 100 after heating puts material platform 1 and bar clamping device, puts material platform 1 and fixes on the ground, puts material platform 1
Upper end be provided with indent for horizontal positioned heating after bar 100 lower V-groove 11, bar clamping device include pressing plate
2 and hydraulic cylinder 3, pressing plate 2 is located at the top for putting material platform 1, be provided with the lower surface of pressing plate 2 indent and position and lower V-type
The corresponding upper V-groove 21 of groove 11, hydraulic cylinder 3 is fixed on to be put on material platform 1, and the drive shaft of hydraulic cylinder 3 is fixed with pressing plate 2 and connected
Connect, for driving pressing plate 2 to move up and down, put material platform 1 both sides be respectively arranged with structure identical for processing heat after
The thermal forming device of bar end shape, thermal forming device includes support platform 4, motor 5, main shaft 6, planet support body 7 and the sun
Wheel 71, support platform 4 is maintained static, and motor 5 is fixed in support platform 4, and main shaft 6 is by shaft coupling and the drive shaft of motor 5
Be fixedly and coaxially connected, planet support body 7 is fixedly and coaxially connected with main shaft 6, sun gear 71 be located at planet support body 7 in, sun gear 71 with
Support platform 4 is fixedly connected, and two are provided with along the symmetrically arranged planetary gear 72 of sun gear 71, planetary gear 72 in planet support body 7
On be coaxially fixedly installed planet axis 73, the axle of planet axis 73 is connected in planet support body 7, and planetary gear 72 is meshed with sun gear 71,
Sun gear 71 is 1 with the gear ratio of planetary gear 72：7 or 1：8, it is provided with plane between each planetary gear 72 and planet support body 7
Screw mechanism, Liang Ge snails mechanism is symmetrical arranged along main shaft 6, and snail mechanism includes claw 8, and planetary gear 72 is towards putting
Flat thread 721 is provided with the plane of material platform 1, the chute 74 of radial direction is provided with planet support body 7, one end of claw 8 is stretched
Enter chute 74 to be engaged with flat thread 721, planet support body 7 is fixedly installed the cunning of radial direction towards on the end face for putting material platform 1
Road 75, claw 8 radially slides cooperation with slideway 75, and the other end of claw 8 is fixedly connected with forming tool 9, and forming tool 9 is circle
Dish type, the shape that the shape of the periphery of forming tool 9 need to be processed with the end of bar 100 is identical.
Embodiment two：As illustrated, a kind of planet circular system-planar spiral-type bar end hot forming mechanism, including for
That installs the bar 100 after heating puts material platform 1 and bar clamping device, puts to be fixedly installed between material platform 1 and ground and send
Material guideway, feeding guide is secondary perpendicular with the axial direction of bar 100, and feeding guide is secondary to include feeding guide 12 and feeding slide block
13, feeding guide 12 is fixed on the ground, feeding slide block 13 be fixedly connected on puts material platform 1 bottom surface on, feeding slide block 13 with
The level of feeding guide 12 is slidably matched, put material platform 1 upper end be provided with indent for horizontal positioned heating after bar 100
Lower V-groove 11, bar clamping device includes pressing plate 2 and hydraulic cylinder 3, and pressing plate 2 is located at the top for putting material platform 1, under pressing plate 2
Be provided with end face indent and the position upper V-groove 21 corresponding with lower V-groove 11, hydraulic cylinder 3 is fixed on puts material platform 1
On, the drive shaft of hydraulic cylinder 3 is fixedly connected with pressing plate 2, and for driving pressing plate 2 to move up and down, the both sides for putting material platform 1 set respectively
The thermal forming device of the bar end shape that structure identical is used for after heating is equipped with, thermal forming device includes support platform
4th, motor 5, main shaft 6, planet support body 7 and sun gear 71, support platform 4 is maintained static, and motor 5 is fixed in support platform 4, main
Axle 6 is fixedly and coaxially connected by shaft coupling with the drive shaft of motor 5, and planet support body 7 is fixedly and coaxially connected with main shaft 6, sun gear
71 are located in planet support body 7, and sun gear 71 is fixedly connected with support platform 4, and two are provided with along sun gear 71 in planet support body 7
Symmetrically arranged planetary gear 72, is coaxially fixedly installed planet axis 73 on planetary gear 72, the axle of planet axis 73 is connected on planet support body 7
In, planetary gear 72 is meshed with sun gear 71, and sun gear 71 is 1 with the gear ratio of planetary gear 72：7 or 1：8, each planetary gear 72
Snail mechanism is provided between planet support body 7, Liang Ge snails mechanism is symmetrical arranged along main shaft 6, snail
Mechanism includes claw 8, and planetary gear 72 is provided with flat thread 721, arranges on planet support body 7 towards in the plane for putting material platform 1
There is the chute 74 of radial direction, one end of claw 8 is stretched into chute 74 and is engaged with flat thread 721, planet support body 7 is towards putting material platform
The slideway 75 of radial direction is fixedly installed on 1 end face, claw 8 radially slides cooperation with slideway 75, and the other end of claw 8 is fixed and connected
Forming tool 9 is connected to, forming tool 9 is disc, and the shape of the periphery of forming tool 9 needs processing with the end of bar 100
Shape it is identical.
Embodiment three：As illustrated, a kind of planet circular system-planar spiral-type bar end hot forming mechanism, including for
That installs the bar 100 after heating puts material platform 1 and bar clamping device, puts material platform 1 and fixes on the ground, puts material platform 1
Upper end be provided with indent for horizontal positioned heating after bar 100 lower V-groove 11, bar clamping device include pressing plate
2 and hydraulic cylinder 3, pressing plate 2 is located at the top for putting material platform 1, be provided with the lower surface of pressing plate 2 indent and position and lower V-type
The corresponding upper V-groove 21 of groove 11, hydraulic cylinder 3 is fixed on to be put on material platform 1, and the drive shaft of hydraulic cylinder 3 is fixed with pressing plate 2 and connected
Connect, for driving pressing plate 2 to move up and down, put material platform 1 both sides be respectively arranged with structure identical for processing heat after
The thermal forming device of bar end shape, thermal forming device includes support platform 4, motor 5, main shaft 6, planet support body 7 and the sun
Wheel 71, motor 5 is fixed in support platform 4, and main shaft 6 is fixedly and coaxially connected by shaft coupling with the drive shaft of motor 5, planet carrier
Body 7 is fixedly and coaxially connected with main shaft 6, and sun gear 71 is located in planet support body 7, and sun gear 71 is fixedly connected with support platform 4, OK
Two are provided with along the symmetrically arranged planetary gear 72 of sun gear 71, planet is coaxially fixedly installed on planetary gear 72 in carrier body 7
Axle 73, the axle of planet axis 73 is connected in planet support body 7, and planetary gear 72 is meshed with sun gear 71, sun gear 71 and planetary gear 72
Gear ratio is 1：7 or 1：8, snail mechanism, two snails are provided between each planetary gear 72 and planet support body 7
Mechanism is symmetrical arranged along main shaft 6, and snail mechanism includes claw 8, and planetary gear 72 is provided with towards in the plane for putting material platform 1
Flat thread 721, is provided with the chute 74 of radial direction on planet support body 7, chute 74 and flat thread 721 are stretched in one end of claw 8
It is engaged, planet support body 7 is fixedly installed the slideway 75 of radial direction towards on the end face for putting material platform 1, and claw 8 is with slideway 75 radially
It is slidably matched, the other end of claw 8 is fixedly connected with forming tool 9, forming tool 9 is disc, the periphery of forming tool 9
Shape it is identical with the shape that the end of bar 100 need to process；In being arranged on two thermal forming devices for putting material platform 1 both sides,
One of support platform 4 is maintained static, and between another support platform 4 and ground roll adjustment guideway, roll adjustment are fixedly installed
Guideway is axially arranged along bar 100, and roll adjustment guideway includes roll adjustment guide rail 41 and roll adjustment slide block 42, and roll adjustment guide rail 41 is fixed
On the ground, roll adjustment slide block 42 is fixedly connected on the bottom surface of support platform 4, and roll adjustment slide block 42 slides with the level of roll adjustment guide rail 41
Coordinate, roll adjustment slide block 42 slides axially along bar 100.
Example IV：As illustrated, a kind of planet circular system-planar spiral-type bar end hot forming mechanism, including for
That installs the bar 100 after heating puts material platform 1 and bar clamping device, puts to be fixedly installed between material platform 1 and ground and send
Material guideway, feeding guide is secondary perpendicular with the axial direction of bar 100, and feeding guide is secondary to include feeding guide 12 and feeding slide block
13, feeding guide 12 is fixed on the ground, feeding slide block 13 be fixedly connected on puts material platform 1 bottom surface on, feeding slide block 13 with
The level of feeding guide 12 is slidably matched, put material platform 1 upper end be provided with indent for horizontal positioned heating after bar 100
Lower V-groove 11, bar clamping device includes pressing plate 2 and hydraulic cylinder 3, and pressing plate 2 is located at the top for putting material platform 1, under pressing plate 2
Be provided with end face indent and the position upper V-groove 21 corresponding with lower V-groove 11, hydraulic cylinder 3 is fixed on puts material platform 1
On, the drive shaft of hydraulic cylinder 3 is fixedly connected with pressing plate 2, and for driving pressing plate 2 to move up and down, the both sides for putting material platform 1 set respectively
The thermal forming device of the bar end shape that structure identical is used for after heating is equipped with, thermal forming device includes support platform
4th, motor 5, main shaft 6, planet support body 7 and sun gear 71, motor 5 is fixed in support platform 4, and main shaft 6 is by shaft coupling and electricity
The drive shaft of machine 5 is fixedly and coaxially connected, and planet support body 7 is fixedly and coaxially connected with main shaft 6, and sun gear 71 is located in planet support body 7,
Sun gear 71 is fixedly connected with support platform 4, and two are provided with along the symmetrically arranged planetary gear of sun gear 71 in planet support body 7
72, planet axis 73 are coaxially fixedly installed on planetary gear 72, the axle of planet axis 73 is connected in planet support body 7, planetary gear 72 and the sun
Wheel 71 is meshed, and sun gear 71 is 1 with the gear ratio of planetary gear 72：7 or 1：8, between each planetary gear 72 and planet support body 7
Snail mechanism is provided with, Liang Ge snails mechanism is symmetrical arranged along main shaft 6, snail mechanism includes claw 8, planet
Wheel 72 is provided with flat thread 721 towards in the plane for putting material platform 1, and the chute 74 of radial direction, claw are provided with planet support body 7
8 one end is stretched into chute 74 and is engaged with flat thread 721, and planet support body 7 is fixedly installed towards on the end face for putting material platform 1
The slideway 75 of radial direction, claw 8 radially slides cooperation with slideway 75, and the other end of claw 8 is fixedly connected with forming tool 9, shaping
Cutter 9 is disc, and the shape that the shape of the periphery of forming tool 9 need to be processed with the end of bar 100 is identical；It is arranged on and puts
In two thermal forming devices of material platform 1 both sides, one of support platform 4 is maintained static, another support platform 4 and ground
Between be fixedly installed roll adjustment guideway, roll adjustment guideway is axially arranged along bar 100, roll adjustment guideway include roll adjustment guide rail
41 and roll adjustment slide block 42, roll adjustment guide rail 41 is fixed on the ground, and roll adjustment slide block 42 is fixedly connected on the bottom surface of support platform 4,
Roll adjustment slide block 42 is slidably matched with the level of roll adjustment guide rail 41, and roll adjustment slide block 42 slides axially along bar 100.
Claims (6)
1. a kind of planet circular system-planar spiral-type bar end hot forming mechanism, it is characterised in that after including for installing heating
Bar put material platform and bar clamping device, the described both sides for putting material platform be respectively arranged with structure identical for plus
The thermal forming device of the bar end shape after work heating, described thermal forming device includes support platform, motor, main shaft, OK
Carrier body and sun gear, described motor is fixed in described support platform, the driving of described main shaft with described motor
Axle is fixedly and coaxially connected, and described planet support body is fixedly and coaxially connected with described main shaft, and described sun gear is located at described
It is fixedly connected in planet support body and with described support platform, two is connected with described planet carrier body along described sun gear
Symmetrically arranged planetary gear, described planetary gear is meshed with described sun gear, the planetary gear described in each and described row
Snail mechanism is provided between carrier body, the snail mechanism described in two is symmetrical arranged along described main shaft, often
Forming tool is both provided with individual described snail mechanism, described snail mechanism includes claw, described planet
Planet axis are coaxially fixedly installed on wheel, described planet axis axle is connected in described planet support body, described planetary gear direction
Flat thread is provided with the described plane for putting material platform, the chute of radial direction is provided with described planet support body, it is described
One end of claw is stretched into described chute and is engaged with described flat thread, and described planet support body is put down towards described material of putting
The slideway of radial direction is fixedly installed on the end face of platform, described claw radially slides cooperation, described shaping with described slideway
Cutter is fixedly connected with the other end of described claw.
2. a kind of planet circular system-planar spiral-type bar end hot forming mechanism as claimed in claim 1, it is characterised in that
Described forming tool is disc, the shape phase that the shape of the periphery of described forming tool need to be processed with bar end
Together.
3. a kind of planet circular system-planar spiral-type bar end hot forming mechanism as claimed in claim 1, it is characterised in that
The described upper end for putting material platform is provided with the lower V-groove for the bar after horizontal positioned heating of indent, described bar
Clamping device includes pressing plate and hydraulic cylinder, and described pressing plate is located at the described top for putting material platform, the lower end of described pressing plate
Be provided with face indent and the position upper V-groove corresponding with described lower V-groove, described hydraulic cylinder is fixed on described
Put on material platform, the drive shaft of described hydraulic cylinder is fixedly connected with described pressing plate, move down on described pressing plate for driving
It is dynamic.
4. a kind of planet circular system-planar spiral-type bar end hot forming mechanism as claimed in claim 1, it is characterised in that
Feeding guide pair be fixedly installed between material platform and ground in described is put, and described feeding guide is secondary axially mutually vertical with bar
Directly, described feeding guide is secondary to include feeding guide and feeding slide block, and described feeding guide is fixed on the ground, and described send
Material slide block is fixedly connected on the described bottom surface for putting material platform, and described feeding slide block slides with described feeding guide level
Coordinate.
5. a kind of planet circular system as described in claim 1 or 4-planar spiral-type bar end hot forming mechanism, its feature exists
Roll adjustment guideway is fixedly installed between the support platform described in one of them and ground, described roll adjustment guideway is along bar
It is axially arranged, described roll adjustment guideway includes roll adjustment guide rail and roll adjustment slide block, and described roll adjustment guide rail is fixed on the ground,
Described roll adjustment slide block is fixedly connected on the bottom surface of described support platform, described roll adjustment slide block and described roll adjustment guide rail
Level is slidably matched, described roll adjustment slide block sliding axially along bar.
6. a kind of planet circular system-planar spiral-type bar end hot forming mechanism as claimed in claim 1, it is characterised in that
Described sun gear is 1 with the gear ratio of described planetary gear：7 or 1：8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415393.7A CN105014159B (en) | 2015-07-15 | 2015-07-15 | Planetary gear train-plane screw type bar end hot molding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415393.7A CN105014159B (en) | 2015-07-15 | 2015-07-15 | Planetary gear train-plane screw type bar end hot molding mechanism |
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| Publication Number | Publication Date |
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| CN105014159A CN105014159A (en) | 2015-11-04 |
| CN105014159B true CN105014159B (en) | 2017-04-26 |
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| CN201510415393.7A Active CN105014159B (en) | 2015-07-15 | 2015-07-15 | Planetary gear train-plane screw type bar end hot molding mechanism |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405922A (en) * | 2017-11-24 | 2018-08-17 | 遵化市永辉工程机械配件有限公司 | A kind of axial workpiece drill centres machine tool |
| CN109702097B (en) * | 2018-12-25 | 2024-01-02 | 湖州机床厂有限公司 | Efficient thermoforming equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1400944A (en) * | 1974-07-12 | 1975-07-16 | Vyzk Ustav Tvarecich Stroju | Cross wedge rolling |
| US4177660A (en) * | 1978-03-24 | 1979-12-11 | Vyzkumny Ustav Tvarecich Stroju A Technologie Tvareni | Apparatus for feeding workpieces for cross wedge rolling |
| SU1379001A1 (en) * | 1986-01-09 | 1988-03-07 | Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения им.А.И.Целикова | Arrangement for cross and wedge rolling |
| CN101722186B (en) * | 2009-11-25 | 2012-01-25 | 宁波大学 | Self-potential roller-type cross wedge rolling mill |
| CN102553928B (en) * | 2012-01-09 | 2014-04-16 | 宁波大学 | Roll system of replaceable-roll type cross wedge rolling mill |
| CN103551650B (en) * | 2013-10-10 | 2016-01-20 | 湖北新冶钢汽车零部件有限公司 | A kind of automatic stock cutter |
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2015
- 2015-07-15 CN CN201510415393.7A patent/CN105014159B/en active Active
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