CN115007643A - Cross wedge rolling long shaft piece shaping blank making small stub bar combined forming system - Google Patents
Cross wedge rolling long shaft piece shaping blank making small stub bar combined forming system Download PDFInfo
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- CN115007643A CN115007643A CN202210589823.7A CN202210589823A CN115007643A CN 115007643 A CN115007643 A CN 115007643A CN 202210589823 A CN202210589823 A CN 202210589823A CN 115007643 A CN115007643 A CN 115007643A
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- chain
- rolling mill
- blank
- rolling
- shaped groove
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- 238000005096 rolling process Methods 0.000 title claims abstract description 67
- 238000007493 shaping process Methods 0.000 title claims abstract description 26
- 238000001125 extrusion Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 17
- 230000005540 biological transmission Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 description 11
- 239000000047 product Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- 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
- B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
- B21B1/14—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 structural sections, i.e. work of special cross-section, e.g. angle steel in a non-continuous process, i.e. at least one reversing stand
-
- 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
-
- 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
- B21B1/02—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 heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
- B21B2001/022—Blooms or billets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a cross wedge rolling long shaft piece shaping blank making small stub bar combined forming system, and relates to the technical field of cross wedge rolling equipment. The invention uses two rolling mills and a set of quick transmission device, designs a special die on the first rolling mill, rolls the heated bar, rolls the two ends of the bar into the required fixed shape, then quickly transmits the bar with the fixed shape at the two ends from the first rolling mill to the second rolling mill by the quick transmission device, and realizes the final forming on the second rolling mill. The forming mode solves the problem that one rolling mill cannot reduce the stub bar by utilizing the shaping blank to form the long shaft part, solves the problem that the small stub bar of the long shaft part occupies long roll surface in the rolling process, and improves the material utilization rate.
Description
Technical Field
The invention relates to the technical field of cross wedge rolling equipment, in particular to a cross wedge rolling long-shaft piece shaping blank small stub bar combined forming system.
Background
The cross wedge rolling is an advanced technology for forming shaft parts, and has the characteristics of energy conservation, material saving, high efficiency, environmental protection, low noise, long service life of a die and the like. However, because of radial compression and axial extension in the cross wedge rolling forming process, the surface of the metal material always flows faster than the center of the metal material, so that concave surfaces, looseness or holes are formed at two ends of a rolled piece, and the shaft piece is scrapped, therefore, enough stub bars must be left at two ends of the cross wedge rolling piece, and the stub bars are cut off after forming and thrown away as waste materials. The bigger the stub bar is, the more the waste material is, and the stub bar is too small, which can cause concave centers and looseness at two ends of the product and form waste products. Therefore, the important factor for improving the material utilization rate of the cross wedge rolled piece is to reduce the stub bars at the two ends of the rolled piece. Currently, the literature shows a number of methods for reducing the stub bar, such as: the method is characterized by comprising the steps of reverse wedge, wedge blocking, closing and opening combined rolling, special blanking and the like, but the industrial stable production is not realized really, and the problem of rolling the small stub bar of the long shaft piece cannot be solved. Each approach has its limitations: the reverse wedge is that when rolling begins, two ends of a bar stock are pressed into a cone shape by a method different from a normal wedge rolling method, so that the defect that the surface of the material flows faster than the center of the material is overcome, and a stub bar is reduced. The method is theoretically feasible, but in the actual forming process, the material is easily blocked and clamped, the shape of the formed part is influenced, and the wedge is also easily hollow and loose and cannot be produced in batches. The special blanking requires additional working procedures and equipment, and the process is complex and can not be used for on-line production.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined forming system for a small stub bar of a shaping blank of a cross wedge rolling long shaft part, solving the problem that the rolling of the small stub bar of the long shaft part can not be realized on one rolling mill, and improving the material utilization rate.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a small stub bar combined forming system for shaping and blanking a long shaft part by cross wedge rolling comprises a first rolling mill, a conveying device and a second rolling mill, wherein a blanking die is arranged on the first rolling mill, and a bar is made into a shaping blank with a specific shape by the blanking die; the conveying device is arranged between the first rolling mill and the second rolling mill and is used for conveying the shaped material blank to the second rolling mill from the first rolling mill, the conveying device comprises a support and a chain track, a first baffle and a second baffle are symmetrically arranged on two sides of the support in a downward inclined mode, the first baffle and the second baffle form a V-shaped groove with an opening at the lower end, the shaped material blank is placed in the V-shaped groove and slides along the length direction of the V-shaped groove, a chain is arranged right below the opening of the V-shaped groove, the chain is driven by a motor and a chain wheel and moves in the chain track, a plurality of pushing pieces are connected to the chain at intervals, the pushing pieces extend upwards into the V-shaped groove, and the pushing pieces push the shaped material blank to slide in the V-shaped groove along with the movement of the chain; the second rolling mill is provided with a forming die which forms the shaped blank into a product with a required shape.
Preferably, the blank making mold is provided with a wedge point, a wedging and backward extrusion section and a finishing section, the bar enters the blank making mold from the wedge point and starts to deform, the heads of the two ends of the bar are extruded into a designed shape through the wedging and backward extrusion section, and finally the finishing section shapes the bar to finish the shaping blank making work.
Preferably, the chain is a single-row roller chain, a plurality of connecting pieces are connected to the chain at intervals, and the pushing piece is fixedly connected to the upper surfaces of the connecting pieces.
Preferably, the cross section of the connecting piece is a U-shaped groove, the opening of the U-shaped groove faces the chain, and the pushing piece is fixedly connected to the upper surface of the outer bottom surface of the U-shaped groove.
Preferably, the chain track comprises a first track plate and a second track plate, the lower part of the first baffle plate is fixedly connected with the upper part of the second track plate, and the lower part of the second baffle plate is fixedly connected with the upper part of the first track plate.
Preferably, a protective mesh is arranged above the V-shaped groove.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the method has the advantages that the first rolling mill is adopted to roll the shaping blank, the second rolling mill finishes product rolling, if the two rolling mills can not be started simultaneously, the shaping blank can be produced firstly, and the shaping blank is rolled to form a final product when the other rolling mill is started, so that the method can be used for forming the connecting line, brings convenience for replacing the rolling mills of multiple varieties, and solves the problem that the long shaft part small stub bar occupies long roll surface for rolling; the conveying device in the application adopts the chain to drive the pushing piece to push the setting material blank to slide and move in the V-shaped groove, so that the conveying device is safe and reliable to convey, the setting material blank is not required to be manually transferred, the production efficiency is improved, and the labor cost is reduced.
Drawings
FIG. 1 is a schematic overall structure of the present application;
FIG. 2 is a schematic view of the shape and cross-sectional structure of a blank mold;
FIG. 3 is a schematic view of the structure of the conveying apparatus;
FIG. 4 is a schematic view of the drive configuration of the chain;
in the figure: 1. a support; 2. a first baffle plate; 3. shaping the blank; 4. a pusher member; 5. a second baffle; 6. a connecting member; 7. a first track plate; 8. a chain; 9. a second track plate; 10. a first rolling mill; 11. a conveying device; 12. a second rolling mill; 13. wedging; 14. wedging and backward extruding section; 15 finishing section.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in figure 1, the small stub bar combined forming system for shaping the long shaft part by cross wedge rolling comprises a first rolling mill 10, a conveying device 11 and a second rolling mill 12, wherein a blank making mould is arranged on the first rolling mill 10, and the blank making mould is used for making a bar into a shaping blank 3 with a specific shape; as shown in fig. 2, the blank making mold is provided with a wedge 13, a wedging and backward extrusion section 14 and a finishing section 15, the bar enters the blank making mold from the wedge 13 and starts to deform, the heads at the two ends of the bar are extruded into a designed shape through the wedging and backward extrusion section 14, and finally the finishing section 15 shapes the bar to finish the blank shaping work.
The transport device 11 is arranged between the first rolling mill 10 and the second rolling mill 12 and transports the shaped preforms 3 from the first rolling mill 10 to the second rolling mill 12.
As shown in fig. 3-4, the conveying device 11 includes a support 1 and a chain track, wherein a first baffle 2 and a second baffle 5 are symmetrically arranged on two sides of the support 1 in a downward inclined manner, the first baffle 2 and the second baffle 5 form a V-shaped groove with an open lower end, the chain track includes a first track plate 7 and a second track plate 9, the lower portion of the first baffle 2 is fixedly connected to the upper portion of the second track plate 9, and the lower portion of the second baffle 5 is fixedly connected to the upper portion of the first track plate 7. The shaping material blank 3 is placed in the V-shaped groove and slides along the length direction of the V-shaped groove, a chain 8 is arranged under the opening of the V-shaped groove, the chain 8 is driven by a motor and a chain wheel and moves in a chain track, the chain 8 is a single-row roller chain, a plurality of connecting pieces 6 are connected to the chain 8 at intervals, the cross section of each connecting piece 6 is a U-shaped groove, the opening of each U-shaped groove faces the chain 8, and the pushing piece 4 is fixedly connected to the upper surface of the outer bottom surface of the U-shaped groove. The pushing piece 4 extends upwards into the V-shaped groove, and the pushing piece 4 pushes the shaping blank 3 to slide and move in the V-shaped groove along with the movement of the chain 8; pushing pieces 4 are arranged on the chain 8 at intervals, the material 3 falls into the V-shaped groove from the first rolling mill, and the pushing pieces 4 continuously push the material 3 falling into the V-shaped groove to the second rolling mill 12 along with the rotation of the chain 8. If necessary, the shaping material 3 on the chain 8 can be pushed into the second rolling mill 12 by a pushing device driven by an air cylinder or a hydraulic cylinder.
The second rolling mill 12 is provided with a shaping die which shapes the shaped preform 3 into a product of a desired shape.
And a protective net cover is arranged above the V-shaped groove, so that foreign matters can be prevented from falling into the groove, and the safety of the transportation of the material piece 3 is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (6)
1. A small stub bar combined forming system for shaping a long shaft piece through cross wedge rolling is characterized by comprising a first rolling mill (10), a conveying device (11) and a second rolling mill (12), wherein a blank making mold is arranged on the first rolling mill (10), and the blank making mold is used for making a bar into a shaping blank (3) with a specific shape; the conveying device (11) is arranged between the first rolling mill (10) and the second rolling mill (12) and is used for conveying the shaping billets (3) from the first rolling mill (10) to the second rolling mill (12), the conveying device (11) comprises a support (1) and a chain track, a first baffle plate (2) and a second baffle plate (5) are symmetrically arranged on two sides of the support (1) in a downward inclined mode, the first baffle plate (2) and the second baffle plate (5) form a V-shaped groove with an opening at the lower end, the shaping billets (3) are placed in the V-shaped groove and slide along the length direction of the V-shaped groove, a chain (8) is arranged right below the opening of the V-shaped groove, the chain (8) is driven by a motor and a chain wheel and moves in the chain track, a plurality of pushing pieces (4) are connected to the chain (8) at intervals, the pushing piece (4) extends upwards into the V-shaped groove, and the pushing piece (4) pushes the shaping blank (3) to slide in the V-shaped groove along with the movement of the chain (8); the second rolling mill (12) is provided with a forming die which forms the shaped blank (3) into a product of a desired shape.
2. The system for jointly forming the small head of the shaped blank of the long shaft member by cross wedge rolling as claimed in claim 1, wherein the blank-making die is provided with a wedge point (13), a wedging and backward extrusion section (14) and a finishing section (15), the bar enters the blank-making die from the wedge point (13) and starts to deform, the heads of the two ends of the bar are extruded into designed shapes through the wedging and backward extrusion section (14), and finally the finishing section (15) shapes the bar to finish the blank-making and shaping work.
3. A system for jointly forming a cross wedge rolling long shaft piece shape forming blank small stub bar according to claim 1, characterized in that the chain (8) is a single row roller chain, a plurality of connecting pieces (6) are connected to the chain (8) at intervals, and the pushing pieces (4) are fixedly connected to the connecting pieces (6).
4. A rapid feeding device between cross wedge rolling mills according to claim 3, characterized in that the cross section of the connecting piece (6) is a U-shaped groove, the opening of which is arranged towards the chain (8), and the pushing piece (4) is fixedly connected on the outer bottom surface of the U-shaped groove.
5. The cross wedge rolling mill room fast feeding device according to claim 1, wherein the chain track comprises a first track plate (7) and a second track plate (9), the lower portion of the first baffle plate (2) is fixedly connected with the upper portion of the second track plate (9), and the lower portion of the second baffle plate (5) is fixedly connected with the upper portion of the first track plate (7).
6. The rapid feeding device between wedge cross rolling mills according to any one of claims 1 to, wherein a protective screen is provided above the V-shaped groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210589823.7A CN115007643A (en) | 2022-05-26 | 2022-05-26 | Cross wedge rolling long shaft piece shaping blank making small stub bar combined forming system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210589823.7A CN115007643A (en) | 2022-05-26 | 2022-05-26 | Cross wedge rolling long shaft piece shaping blank making small stub bar combined forming system |
Publications (1)
Publication Number | Publication Date |
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CN115007643A true CN115007643A (en) | 2022-09-06 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202210589823.7A Pending CN115007643A (en) | 2022-05-26 | 2022-05-26 | Cross wedge rolling long shaft piece shaping blank making small stub bar combined forming system |
Country Status (1)
Country | Link |
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CN (1) | CN115007643A (en) |
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2022
- 2022-05-26 CN CN202210589823.7A patent/CN115007643A/en active Pending
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