CN110538880A - cross rolling process for large shaft wedge - Google Patents
cross rolling process for large shaft wedge Download PDFInfo
- Publication number
- CN110538880A CN110538880A CN201910804678.8A CN201910804678A CN110538880A CN 110538880 A CN110538880 A CN 110538880A CN 201910804678 A CN201910804678 A CN 201910804678A CN 110538880 A CN110538880 A CN 110538880A
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- Prior art keywords
- blank
- rolling
- rolled
- cross wedge
- rotary
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B13/023—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally the axis of the rolls being other than perpendicular to the direction of movement of the product, e.g. cross-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/18—Adjusting or positioning rolls by moving rolls axially
-
- 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
- B21B39/14—Guiding, positioning or aligning work
- B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
- B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a cross rolling process of a large-scale shaft wedge, S1, hoisting a rolling blank to a feeding rack, and feeding the rolling blank on the feeding rack into induction heating equipment for heating by using steel pushing equipment; s2, conveying the heated rolling blank to a cross wedge rolling mill for rolling; and S3, clamping one end of the rolled blank by using the rotary mechanical claw, and feeding the rolled blank into a cross wedge rolling mill for sectional rolling according to design parameters. The invention can realize the rolling function of the traditional cross wedge rolling mill, can roll the blank with large diameter or the length of the shaft larger than the length of the roller of the rolling mill under a single die, and replaces the existing forging mode with the sectional rolling mode to produce the step shaft, the step shaft has the advantages of high production efficiency, high precision and the like, and the blank after being rolled can be subjected to the blank making process of fine machining without rough machining after being subjected to heat treatment, thereby greatly improving the production efficiency of the step shaft.
Description
Technical Field
the invention belongs to the field of rolling of shaft workpieces, and particularly relates to a cross rolling process of a large shaft wedge.
background
In recent years, with the increasing demand of large-diameter shaft parts along with the development of times, the cross wedge rolling is increasingly large as a new process which is very suitable for producing stepped shafts and rotary parts. The existing large-scale shaft production needs to be processed by a fast section machine, a precision forging machine and other equipment to forge and press into a rough blank, and then rough machining and finish machining are carried out to obtain the required step shaft, so that the utilization rate of materials is low, the energy consumption is high, the time is long and the like. The traditional cross wedge rolling mill can only roll large shafts with the diameter of 150mm and the length of 1200mm at most, a single die can only roll step shafts with one specification, raw materials with different diameters and lengths cannot be produced under the same die, so that the investment of the die is large, the time for adjusting the equipment is long, and the important problem to be solved urgently is solved.
Disclosure of Invention
in view of the above, the present invention provides a cross rolling process for large shaft wedges, which aims to overcome the above-mentioned defects in the prior art.
in order to achieve the purpose, the technical scheme of the invention is realized as follows:
A cross wedge rolling process for rolling large shafts comprises the following steps:
S1, hoisting the rolled blank to a feeding rack, and feeding the rolled blank on the feeding rack into induction heating equipment for heating by using steel pushing equipment;
S2, conveying the heated rolling blank to a cross wedge rolling mill for rolling;
S3, clamping one end of the rolled blank by using a rotary mechanical claw, and sending the rolled blank into a cross wedge rolling mill for sectional rolling according to design parameters;
s4, after one end of the rolled blank is rolled, returning the rotary manipulator and releasing the fixation of the rolled blank;
S5, rotating the rolled blank by 180 degrees, re-clamping the rolled blank by using a rotary manipulator, and sending the non-rolled end of the rolled blank into a cross wedge rolling mill for sectional rolling;
And S6, after the two ends of the rolling blank are completely rolled, moving the rolling blank to a collection rack.
Further, the specific method of step S2 is as follows:
s201, arranging a rotary lifting platform at a discharging roller way, and pushing the heated rolled blank to the rotary lifting platform by using steel pushing equipment;
S202, the rolling stock is moved to a cross wedge rolling mill by rotating the lifting platform.
Further, the specific method of step S3 is as follows:
s301, driving a rolled blank to ascend to a window of a cross wedge rolling mill by a rotary lifting platform, and clamping one end of the rolled blank by a rotary manipulator;
and S302, the rotary lifting platform descends and exits from the working space of the rotary manipulator, and the rotary manipulator sends one end of the rolled blank into a cross wedge rolling mill according to design parameters for sectional rolling.
further, the specific method of step S5 is as follows:
S501, the rotary lifting platform holds the rolled blank again, and after the rotary manipulator releases the fixation of the rolled blank, the rotary lifting platform drives the rolled blank to rotate 180 degrees;
s502, the rotary manipulator clamps the rolled blank again, the rotary lifting platform descends and moves out, and the rotary manipulator continues to convey the rolled blank into the cross wedge rolling mill for sectional rolling.
furthermore, the cross wedge rolling mill adopts a cross wedge rolling mill with a full hydraulic AGC servo control function.
compared with the prior art, the invention has the following advantages:
the invention is suitable for cross wedge rolling production of large shafts, can realize one-time rolling forming of large shaft step shafts and sectional rolling of large long shafts, is used for realizing replacement of forging by rolling, expands the field of forging and pressing production, has the advantages of high production efficiency, high material utilization rate, low equipment investment and the like, can realize the rolling function of the traditional cross wedge rolling mill, can roll blanks with large diameter or shaft length larger than the roller length of the rolling mill under a single die, replaces the existing forging mode with the sectional rolling mode to produce the step shafts, has the advantages of high production efficiency, high precision and the like, can carry out a blank making process of finish machining after the rolled blanks are subjected to heat treatment without rough machining, and greatly improves the production efficiency of the step shafts.
The invention can realize that the long shafts of the blanks with different specifications can be rolled by using a single die on the same cross wedge rolling mill, the support of the step shaft can be controlled at any time in the rolling process, and the support and the length of the rollable step shaft are greatly increased by adopting sectional rolling.
Drawings
the accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:
FIG. 1 is a schematic view of a cross wedge rolling process according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a cross wedge rolling mill in the inventive embodiment.
Description of reference numerals:
1-a feeding rack; 2-feeding roller way; 3-a pusher; 4-an induction heating furnace; 5, discharging from a furnace roller way; 6-fixing a baffle plate; 7-lifting and rotating the feeding trolley; 8-a rotary manipulator; 9-feeding a pusher; 10-cross wedge rolling mill; 11-a collection gantry; 12-collecting the trolley; 13-passing flat car.
Detailed Description
it should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.
A cross wedge rolling process for large shafts, as shown in fig. 1 and 2, comprising:
s1, hoisting the rolled blank to a feeding rack, and feeding the rolled blank on the feeding rack into induction heating equipment for heating by using steel pushing equipment;
s2, conveying the heated rolling blank to a cross wedge rolling mill for rolling;
s3, clamping one end of the rolled blank by using a rotary mechanical claw, and sending the rolled blank into a cross wedge rolling mill for sectional rolling according to design parameters;
S4, after one end of the rolled blank is rolled, returning the rotary manipulator and releasing the fixation of the rolled blank;
s5, rotating the rolled blank by 180 degrees, re-clamping the rolled blank by using a rotary manipulator, and sending the non-rolled end of the rolled blank into a cross wedge rolling mill for sectional rolling;
and S6, after the two ends of the rolling blank are completely rolled, moving the rolling blank to a collection rack.
As shown in fig. 1, the cross wedge rolling process for large shafts according to the present invention has both the operation mode of the transmission cross wedge rolling mill and the sectional rolling function of the long round steel blank, specifically, the steel pushing device may be an existing steel pushing machine 3, the induction heating device may be an induction heating furnace 4, the rotary lifting platform may be a lifting rotary feeding trolley 7, and the rolling blank used by the cross wedge rolling mill 10 is round steel.
(1) Aiming at rolling of round steel blanks with the diameter of 150mm and the length of 1200mm below, a traditional rolling process is used; specifically, a round steel blank is hoisted to a feeding rack 1 by a crane, and the round steel blank slides to a feeding roller way 2 in front of the furnace through an opened control gate in a rolling sliding mode through a slope slide way of the feeding rack 1. The blank is pushed into an induction heating furnace 4 for heating through a stokehold feeding roller way 2 and a pusher 3, the heated blank is pushed out to a furnace outlet roller way 5 through the pusher 3 and the unheated round steel blank, and the heated round steel blank is positioned on the furnace outlet roller way 5 through a fixed baffle 6.
the heated round steel is transported to the central line of the operation side window of the cross wedge rolling mill 10 for waiting by lifting the lifting rotary feeding trolley 7, and the blank is pushed into the cross wedge rolling mill 10 by the feeding and pushing device 9 to complete rolling; the rolled finished product is rolled into a collecting groove in a collecting trolley 12 through a sliding groove of an outlet guide plate device on one side of a cross wedge rolling mill 10, the collecting groove filled with the rolled finished product shaft is transversely moved to one side through a transverse moving hydraulic cylinder of the collecting trolley 12, the collecting groove above the collecting trolley 12 is located at a collecting position, the filled collecting groove is hung to a finished product warehouse by a workshop travelling crane for cooling and storing, and an empty groove is placed on the collecting trolley 12 again. And the cooled finished products are marshalled and then hoisted to the cross flat car 13 to be transported to a loading and transporting area, and are transported after being loaded.
(2) aiming at rolling of large round steel with the diameter of 150mm-240mm, a wedge cross mill is used for sectional rolling, the feeding and pushing device 9 can be disassembled and assembled firstly, and then replaced by the rotary manipulator 8, or the rotary manipulator 8 can be directly and additionally arranged on the pushing device, so long as the round steel can be clamped;
Specifically, a round steel blank is hoisted to a feeding rack 1 by a crane, and the round steel blank slides to a feeding roller way 2 in front of the furnace through an opened control gate in a rolling sliding mode through a slope slide way of the feeding rack 1. The blank is pushed into an induction heating furnace 4 for heating through a stokehold feeding roller way 2 and a pusher 3, the heated blank is pushed out to a furnace outlet roller way 5 through the pusher 3 and the unheated round steel blank, and the heated round steel blank is positioned on the furnace outlet roller way 5 through a fixed baffle 6.
The heated round steel is transported to the central line of an operation side window of a cross wedge rolling mill 10 to wait through the lifting of a lifting rotary feeding trolley 7, a rotary manipulator 8 advances and clamps the heated round steel blank, the lifting rotary feeding trolley 7 descends and exits the working space of the rotary manipulator 8, the rotary manipulator 8 clamps the blank and sends the blank into the cross wedge rolling mill 10 in a segmentation manner according to design parameters from an operation side housing window of the cross wedge rolling mill 10, and the blank is rolled to a finished product state of the design parameters except the clamping side of the rotary manipulator 8 through the segmentation rolling of the cross wedge rolling mill 10;
and then the rotary manipulator 8 retreats to the position when the rotary manipulator 8 clamps, so that the lifting rotary feeding trolley 7 transversely moves to the lower part of the rotary manipulator 8 and ascends to support the blank, and the rotary manipulator 8 opens the clamping device and retreats to the initial waiting position. The finished blank held by the lifting rotary feeding trolley 7 rotates 180 degrees, the rotary manipulator 8 advances and clamps the rolled blank, and the lifting rotary feeding trolley 7 descends and exits from the forward working area of the rotary manipulator 8. The rotary manipulator 8 sends the non-rolled side blank into the cross wedge rolling mill 10 for continuous rolling until the blank is rolled to a finished product state of design parameters, the rotary manipulator 8 drives the finished product to exit from the rolling mill to a clamping position, the lifting rotary feeding trolley 7 transversely moves to the lower part of the rotary manipulator 8 and supports the rolled finished product, and the rotary manipulator 8 is opened, clamped and retreated to an initial waiting position.
The lifting rotary feeding trolley 7 supports rolled finished products and puts the rolled finished products on a collecting rack 11, and the lifting rotary feeding trolley 7 descends and transversely moves to the lower part of the tapping roller table 5 to wait for the next heated blank. And the hot finished products on the collecting rack 11 are lifted to a finished product warehouse by a workshop travelling crane. And after cooling the finished product warehouse, grouping, hoisting to a cross flat car 13, transferring to a loading and transferring area, and loading and transporting.
the cross wedge rolling mill can adopt the existing cross wedge rolling mill with full hydraulic AGC servo control function, as long as rolling of large round steel can be realized; specifically, in the production process, different forms of cross wedge rolling mill working forms can be used according to different general types of products, and different forms of dies and auxiliary devices are installed, so that rolling requirements of different products are met, namely, when a roll system is provided with a sectional rolling die, the main rolling length of the products is larger than that of shafts and the like of the rolls, and when a roll system is provided with a traditional die, the main rolling length of the products is smaller than that of the shafts of the rolls.
the invention is suitable for cross wedge rolling production of large shafts, can realize one-time rolling forming of large shaft step shafts and sectional rolling of large long shafts, is used for realizing replacement of forging by rolling, expands the field of forging and pressing production, has the advantages of high production efficiency, high material utilization rate, low equipment investment and the like, can realize the rolling function of the traditional cross wedge rolling mill, can roll blanks with large diameter or shaft length larger than the roller length of the rolling mill under a single die, replaces the existing forging mode with the sectional rolling mode to produce the step shafts, has the advantages of high production efficiency, high precision and the like, can carry out a blank making process of finish machining after the rolled blanks are subjected to heat treatment without rough machining, and greatly improves the production efficiency of the step shafts.
the invention can realize that the long shafts of the blanks with different specifications can be rolled by using a single die on the same cross wedge rolling mill, the support of the step shaft can be controlled at any time in the rolling process, and the support and the length of the rollable step shaft are greatly increased by adopting sectional rolling.
the above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (5)
1. a cross wedge rolling process for large shafts is characterized by comprising the following steps:
s1, hoisting the rolled blank to a feeding rack, and feeding the rolled blank on the feeding rack into induction heating equipment for heating by using steel pushing equipment;
s2, conveying the heated rolling blank to a cross wedge rolling mill for rolling;
S3, clamping one end of the rolled blank by using a rotary mechanical claw, and sending the rolled blank into a cross wedge rolling mill for sectional rolling according to design parameters;
s4, after one end of the rolled blank is rolled, returning the rotary manipulator and releasing the fixation of the rolled blank;
S5, rotating the rolled blank by 180 degrees, re-clamping the rolled blank by using a rotary manipulator, and sending the non-rolled end of the rolled blank into a cross wedge rolling mill for sectional rolling;
And S6, after the two ends of the rolling blank are completely rolled, moving the rolling blank to a collection rack.
2. The cross wedge rolling process for large shafts according to claim 1, wherein the specific method of step S2 is as follows:
S201, arranging a rotary lifting platform at a discharging roller way, and pushing the heated rolled blank to the rotary lifting platform by using steel pushing equipment;
S202, the rolling stock is moved to a cross wedge rolling mill by rotating the lifting platform.
3. The cross wedge rolling process for large shafts according to claim 2, wherein the specific method of step S3 is as follows:
S301, driving a rolled blank to ascend to a window of a cross wedge rolling mill by a rotary lifting platform, and clamping one end of the rolled blank by a rotary manipulator;
And S302, the rotary lifting platform descends and exits from the working space of the rotary manipulator, and the rotary manipulator sends one end of the rolled blank into a cross wedge rolling mill according to design parameters for sectional rolling.
4. The cross wedge rolling process for large shafts according to claim 2, wherein the specific method of step S5 is as follows:
s501, the rotary lifting platform holds the rolled blank again, and after the rotary manipulator releases the fixation of the rolled blank, the rotary lifting platform drives the rolled blank to rotate 180 degrees;
s502, the rotary manipulator clamps the rolled blank again, the rotary lifting platform descends and moves out, and the rotary manipulator continues to convey the rolled blank into the cross wedge rolling mill for sectional rolling.
5. The cross wedge rolling process for large shafts according to claim 1, which is characterized in that: the cross wedge rolling mill adopts a cross wedge rolling mill with a full hydraulic AGC servo control function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910804678.8A CN110538880A (en) | 2019-08-28 | 2019-08-28 | cross rolling process for large shaft wedge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910804678.8A CN110538880A (en) | 2019-08-28 | 2019-08-28 | cross rolling process for large shaft wedge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110538880A true CN110538880A (en) | 2019-12-06 |
Family
ID=68710764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910804678.8A Withdrawn CN110538880A (en) | 2019-08-28 | 2019-08-28 | cross rolling process for large shaft wedge |
Country Status (1)
| Country | Link |
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| CN (1) | CN110538880A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102520A (en) * | 2021-04-09 | 2021-07-13 | 山东中兴汽车零部件有限公司 | Full-automatic production equipment for revolving body shaft parts and using method thereof |
| CN113787159A (en) * | 2021-07-26 | 2021-12-14 | 北京科技大学 | Cross wedge rolling combined die of railway vehicle axle and forming method thereof |
| CN114178802A (en) * | 2021-11-18 | 2022-03-15 | 太原重工轨道交通设备有限公司 | Manufacturing method of large axle wedge cross rolling die |
| CN114229407A (en) * | 2021-12-06 | 2022-03-25 | 太原科技大学 | Online feeding and pushing device for pipe and bar blanks |
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| CN101549384B (en) * | 2009-02-18 | 2010-12-22 | 北京机电研究所 | Roll forging technology for producing roll forging parts with length exceeding maximum permissible length of roll forging machine |
| CN102274921A (en) * | 2011-05-13 | 2011-12-14 | 北京机电研究所 | Method for forming train shaft forgings |
| CN105252280A (en) * | 2015-11-27 | 2016-01-20 | 安徽马钢工程技术集团有限公司 | Production system and technology for American-standard iron chair |
| CN108080547A (en) * | 2017-12-15 | 2018-05-29 | 清华大学 | A kind of long-axis forging prefabricated blank method and device |
-
2019
- 2019-08-28 CN CN201910804678.8A patent/CN110538880A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101549384B (en) * | 2009-02-18 | 2010-12-22 | 北京机电研究所 | Roll forging technology for producing roll forging parts with length exceeding maximum permissible length of roll forging machine |
| CN102274921A (en) * | 2011-05-13 | 2011-12-14 | 北京机电研究所 | Method for forming train shaft forgings |
| CN105252280A (en) * | 2015-11-27 | 2016-01-20 | 安徽马钢工程技术集团有限公司 | Production system and technology for American-standard iron chair |
| CN108080547A (en) * | 2017-12-15 | 2018-05-29 | 清华大学 | A kind of long-axis forging prefabricated blank method and device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102520A (en) * | 2021-04-09 | 2021-07-13 | 山东中兴汽车零部件有限公司 | Full-automatic production equipment for revolving body shaft parts and using method thereof |
| CN113102520B (en) * | 2021-04-09 | 2022-05-20 | 山东中兴汽车零部件有限公司 | Full-automatic production equipment for revolving body shaft parts and using method thereof |
| CN113787159A (en) * | 2021-07-26 | 2021-12-14 | 北京科技大学 | Cross wedge rolling combined die of railway vehicle axle and forming method thereof |
| CN114178802A (en) * | 2021-11-18 | 2022-03-15 | 太原重工轨道交通设备有限公司 | Manufacturing method of large axle wedge cross rolling die |
| CN114229407A (en) * | 2021-12-06 | 2022-03-25 | 太原科技大学 | Online feeding and pushing device for pipe and bar blanks |
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Application publication date: 20191206 |
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