CN108296292B - Three-roller skew rolling forming method for railway vehicle axle - Google Patents
Three-roller skew rolling forming method for railway vehicle axle Download PDFInfo
- Publication number
- CN108296292B CN108296292B CN201810034928.XA CN201810034928A CN108296292B CN 108296292 B CN108296292 B CN 108296292B CN 201810034928 A CN201810034928 A CN 201810034928A CN 108296292 B CN108296292 B CN 108296292B
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- bar stock
- axial
- skew rolling
- railway vehicle
- driving mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling Diescher mills, Stiefel disc piercers, Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
- B21B39/06—Pushing or forcing work into pass
Abstract
The invention discloses a three-roller skew rolling forming method of a railway vehicle axle, which is characterized in that a bar stock is heated and is sent into a three-roller skew rolling mill through an axial material pushing device, three skew rolling rollers are simultaneously occluded with the bar stock and drive the bar stock to rotate, meanwhile, the axial material pushing device pushes the bar stock to axially move at a constant speed, a radial driving mechanism controls the skew rolling rollers to radially move according to the diameter requirement of the railway vehicle axle to be processed, when the bar stock axially moves to be in contact with an axial material guiding device, the axial material guiding device pulls the bar stock to continuously axially move at the constant speed, meanwhile, the bar stock is separated from the axial material pushing device, and a large-diameter long stepped shaft, namely the railway vehicle axle, is obtained after the processing is finished; the method has the advantages that the die is simple to manufacture, the force is uniformly distributed on the surface of a rolled piece, the abrasion of the roller can be effectively reduced in the skew rolling process, the rolling mill can carry out light construction, and the service life of the rolling mill is effectively prolonged.
Description
Technical Field
The invention relates to plastic forming processing of shaft parts, in particular to a three-roller skew rolling forming method of a railway vehicle axle.
Background
The railway vehicle axle is one of three key parts (heavy rail, axle and wheel) for railway construction, and belongs to super-large shaft parts. At present, the method for producing the railway vehicle axle at home and abroad mainly comprises forging and forming, the production efficiency is 0.2-0.3 per minute, and the material utilization rate is 58-65%. The cross wedge rolling is a forming method which is widely applied to shaft parts at present, the material utilization rate and the production efficiency are higher, but the maximum diameter of the shaft parts produced by cross wedge rolling at home and abroad is less than phi 150mm, the maximum length is within 1200mm, and the maximum diameter of a die is phi 1400 mm; the axle of the railway vehicle belongs to an oversized long stepped shaft part, the maximum diameter of the axle is phi 222mm, and the maximum length of the axle is 2356 mm. If the existing wedge cross rolling method is used for producing the railway vehicle axle, the diameter of the die is about phi 3000mm, and the height of the wedge cross rolling machine exceeds 9000mm, so that large machines and dies are inevitably large in investment, difficult to manufacture, inconvenient to produce and operate and cannot be implemented.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a three-roller skew rolling forming method for a railway vehicle axle, which can greatly reduce the production and processing difficulty and cost, reduce the rolling force and moment, avoid the damage to a die and ensure the rolling precision of the railway vehicle axle.
The technical scheme adopted by the invention for solving the technical problems is as follows: a three-roller skew rolling forming method for a railway vehicle axle comprises the following specific steps:
(1) a radial driving mechanism of the oblique rollers is arranged on the three-roller oblique rolling mill, and the three oblique rollers are controlled to synchronously and radially move;
(2) an axial pushing device is arranged on the feeding side of the three-roller skew rolling mill, and an axial guiding device is arranged on the discharging side of the three-roller skew rolling mill;
(3) heating the bar stock to 1000-1200 ℃, feeding the bar stock into a three-roller skew rolling mill through an axial pushing device, simultaneously occluding the three skew rolling rolls with the bar stock and driving the bar stock to rotate, simultaneously pushing the bar stock to axially move at a constant speed by the axial pushing device, controlling the skew rolling rolls to radially move by a radial driving mechanism according to the diameter requirement of the axle of the railway vehicle to be processed, pulling the bar stock to axially move at the constant speed by the axial guiding device when the bar stock axially moves to be in contact with the axial guiding device, simultaneously separating the bar stock from the axial pushing device, and obtaining the large-diameter long stepped shaft, namely the axle of the railway vehicle after the processing is finished.
Further, the axial pushing device comprises a pushing fixture, a rail and a pushing driving mechanism, wherein a driving shaft of the pushing driving mechanism is fixedly connected with the pushing fixture, and the rail is positioned below the bar to be processed.
Furthermore, the pushing driving mechanism is a hydraulic cylinder, an air cylinder or a linear motor and the like.
Furthermore, the axial material guiding device comprises an inductor, a material guiding clamp and a material guiding driving mechanism, wherein a driving shaft of the material guiding driving mechanism is fixedly connected with the material guiding clamp, and the inductor is fixedly arranged on the material guiding clamp.
Furthermore, the material guiding driving mechanism is a hydraulic cylinder, an air cylinder or a linear motor and the like.
Compared with the prior art, the invention has the advantages that:
(1) compared with the traditional wedge cross rolling, the method has the advantages that the mold is simple to manufacture, the force is uniformly distributed on the surface of a rolled piece, the abrasion of the roller can be effectively reduced in the skew rolling process, the rolling mill can carry out light-weight construction, and the service life of the rolling mill is effectively prolonged.
(2) And because the radial driving mechanism of the inclined roller is arranged on the three-roller inclined rolling mill, stepped shaft parts with different diameters can be processed on the three-roller inclined rolling mill by using the same die, and the production cost is low.
(3) The axial pushing device is arranged on the feeding side of the three-roller skew rolling mill, and the axial guiding device is arranged on the discharging side of the three-roller skew rolling mill, so that the bar can move at a constant axial speed in the rolling process, the rolling precision of the axle of the railway vehicle is improved, and the rolling process of the axle of the railway vehicle is easy to control.
Drawings
FIG. 1 is a schematic view of a rolling state according to the present invention;
FIG. 2 is a second schematic view of the rolling state of the present invention;
FIG. 3 is a schematic view of the combination of the skew roll and the bar stock of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in the figure, the three-roller skew rolling forming method of the railway vehicle axle comprises the following specific steps:
(1) a radial driving mechanism (not shown in the figure) of the oblique roller 1 is arranged on the three-roller oblique rolling mill, and controls the three oblique rollers 1 to synchronously and radially move;
(2) an axial pushing device 2 is arranged on the feeding side of the three-roller skew rolling mill, and an axial guiding device 3 is arranged on the discharging side of the three-roller skew rolling mill;
(3) heating a bar 4 to 1000-1200 ℃, feeding the bar 4 into a three-roll skew rolling mill through an axial pushing device 2, simultaneously meshing three skew rolls 1 with the bar 4 and driving the bar 4 to rotate, simultaneously pushing the bar 4 to axially move at a constant speed by the axial pushing device 2, controlling the skew rolls 1 to radially move by a radial driving mechanism according to the diameter requirement of a railway vehicle axle to be processed, pulling the bar 4 to axially move at a constant speed by the axial guiding device 3 when the bar 4 axially moves to be in contact with the axial guiding device 3, simultaneously separating the bar 4 from the axial pushing device 2, and obtaining a large-diameter long stepped shaft-railway vehicle axle after processing.
In the above embodiment, the axial pushing device 2 includes a pushing fixture 21, a rail 22 and a pushing driving mechanism 23, a driving shaft of the pushing driving mechanism 23 is fixedly connected to the pushing fixture 21, the rail 22 is located below the bar 4 to be processed, the axial guiding device 3 includes an inductor 31, a guiding fixture 32 and a guiding driving mechanism 33, a driving shaft of the guiding driving mechanism 33 is fixedly connected to the guiding fixture 32, and the inductor 31 is fixedly mounted on the guiding fixture 32; preferably, the pushing material driving mechanism 23 and the guiding material driving mechanism 33 may be hydraulic cylinders, air cylinders or linear motors.
In the above embodiment, the radial driving mechanism is a linear movement driving mechanism in the mechanical field, and the material pushing clamp 21 and the material guiding clamp 32 are workpiece clamps that can be opened and closed in the mechanical field.
Claims (3)
1. A three-roller skew rolling forming method of a railway vehicle axle is characterized by comprising the following specific steps:
(1) a radial driving mechanism of the oblique rollers is arranged on the three-roller oblique rolling mill, and the three oblique rollers are controlled to synchronously and radially move;
(2) an axial pushing device is arranged on the feeding side of the three-roller skew rolling mill, and an axial guiding device is arranged on the discharging side of the three-roller skew rolling mill;
wherein: the axial pushing device comprises a pushing fixture, a track and a pushing driving mechanism, wherein a driving shaft of the pushing driving mechanism is fixedly connected with the pushing fixture, and the track is positioned below a bar to be processed;
the axial material guiding device comprises an inductor, a material guiding clamp and a material guiding driving mechanism, wherein a driving shaft of the material guiding driving mechanism is fixedly connected with the material guiding clamp, and the inductor is fixedly arranged on the material guiding clamp;
(3) heating the bar stock to 1000-1200 ℃, feeding the bar stock into a three-roller skew rolling mill through an axial pushing device, simultaneously occluding the three skew rolling rolls with the bar stock and driving the bar stock to rotate, simultaneously pushing the bar stock to axially move at a constant speed by the axial pushing device, controlling the skew rolling rolls to radially move by a radial driving mechanism according to the diameter requirement of the axle of the railway vehicle to be processed, pulling the bar stock to axially move at the constant speed by the axial guiding device when the bar stock axially moves to be in contact with the axial guiding device, simultaneously separating the bar stock from the axial pushing device, and obtaining the large-diameter long stepped shaft, namely the axle of the railway vehicle after the processing is finished.
2. The three-roll skew rolling method for a railway vehicle axle according to claim 1, wherein: the material pushing driving mechanism is a hydraulic cylinder or an air cylinder or a linear motor.
3. The three-roll skew rolling method for a railway vehicle axle according to claim 1, wherein: the material guiding driving mechanism is a hydraulic cylinder or an air cylinder or a linear motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034928.XA CN108296292B (en) | 2018-01-15 | 2018-01-15 | Three-roller skew rolling forming method for railway vehicle axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810034928.XA CN108296292B (en) | 2018-01-15 | 2018-01-15 | Three-roller skew rolling forming method for railway vehicle axle |
Publications (2)
| Publication Number | Publication Date |
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| CN108296292A CN108296292A (en) | 2018-07-20 |
| CN108296292B true CN108296292B (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810034928.XA Active CN108296292B (en) | 2018-01-15 | 2018-01-15 | Three-roller skew rolling forming method for railway vehicle axle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022122826A1 (en) * | 2020-12-09 | 2022-06-16 | Forge Pat Gmbh | Forging rolling mill equipped with a manipulator subassemly and method for controlling such a rolling mill |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109158422A (en) * | 2018-08-06 | 2019-01-08 | 宁波大学 | A kind of forming device for high-speed rail hole-bored axle from end to end |
| CN109985910B (en) * | 2019-04-12 | 2020-07-03 | 安徽马钢和菱实业有限公司 | Heating method before rolling for thickened shaft shoulder area of thin-wall trailer axle |
| CN110102575B (en) * | 2019-04-30 | 2020-07-31 | 北京科技大学 | Two-roller flexible skew rolling forming device and method for shaft parts |
| CN113151834B (en) * | 2021-05-13 | 2023-01-17 | 燕山大学 | Shaft part surface strengthening device and method based on three-roller skew rolling cladding forming |
| CN114653748B (en) * | 2022-04-15 | 2022-10-11 | 宁波大学 | Three-roller skew rolling forming method for right-angle stepped shaft |
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| JPH07236902A (en) * | 1994-03-01 | 1995-09-12 | Sumitomo Metal Ind Ltd | Pusher device of plug mill |
| CN200974082Y (en) * | 2006-09-27 | 2007-11-14 | 宝山钢铁股份有限公司 | Hydraulic clamp tool |
| CN201799461U (en) * | 2010-09-07 | 2011-04-20 | 鞍钢股份有限公司 | Clamp for straight pulling tension device of cold-rolling mill |
| CN103252362A (en) * | 2013-05-31 | 2013-08-21 | 二重集团（德阳）重型装备股份有限公司 | Forced rolling mill feed device |
| CN203417928U (en) * | 2013-08-01 | 2014-02-05 | 苏州市艾西依钣金制造有限公司 | Large-size blank hot-rolling equipment |
| CN203711487U (en) * | 2013-12-20 | 2014-07-16 | 安徽澳德矿山机械设备有限公司 | Positioning and pushing feeding device for three-roller diameter reducing machine |
| CN204583867U (en) * | 2015-05-08 | 2015-08-26 | 内蒙古包钢钢联股份有限公司 | Middle alloy seamless pipe punch pipe disc type propulsion plant |
| CN206122329U (en) * | 2016-10-14 | 2017-04-26 | 绍兴市新兴金属材料厂 | Three -roller skew rolling mill |
-
2018
- 2018-01-15 CN CN201810034928.XA patent/CN108296292B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07236902A (en) * | 1994-03-01 | 1995-09-12 | Sumitomo Metal Ind Ltd | Pusher device of plug mill |
| CN200974082Y (en) * | 2006-09-27 | 2007-11-14 | 宝山钢铁股份有限公司 | Hydraulic clamp tool |
| CN201799461U (en) * | 2010-09-07 | 2011-04-20 | 鞍钢股份有限公司 | Clamp for straight pulling tension device of cold-rolling mill |
| CN103252362A (en) * | 2013-05-31 | 2013-08-21 | 二重集团（德阳）重型装备股份有限公司 | Forced rolling mill feed device |
| CN203417928U (en) * | 2013-08-01 | 2014-02-05 | 苏州市艾西依钣金制造有限公司 | Large-size blank hot-rolling equipment |
| CN203711487U (en) * | 2013-12-20 | 2014-07-16 | 安徽澳德矿山机械设备有限公司 | Positioning and pushing feeding device for three-roller diameter reducing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022122826A1 (en) * | 2020-12-09 | 2022-06-16 | Forge Pat Gmbh | Forging rolling mill equipped with a manipulator subassemly and method for controlling such a rolling mill |
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| CN108296292A (en) | 2018-07-20 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20180720 Assignee: Ningbo Yizhu Intelligent Technology Co.,Ltd. Assignor: Ningbo University Contract record no.: X2022980023454 Denomination of invention: A three roll cross rolling forming method for railway vehicle axles Granted publication date: 20200828 License type: Common License Record date: 20221125 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20180720 Assignee: Zhejiang Orange Plastic Technology Co.,Ltd. Assignor: Ningbo University Contract record no.: X2023330000365 Denomination of invention: A Three Roll Cross Rolling Forming Method for Railway Vehicle Axles Granted publication date: 20200828 License type: Common License Record date: 20230630 |
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