CN102500661A - Straightening device for large-diameter material of cold header and straightening method - Google Patents
Straightening device for large-diameter material of cold header and straightening method Download PDFInfo
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- CN102500661A CN102500661A CN2011103113864A CN201110311386A CN102500661A CN 102500661 A CN102500661 A CN 102500661A CN 2011103113864 A CN2011103113864 A CN 2011103113864A CN 201110311386 A CN201110311386 A CN 201110311386A CN 102500661 A CN102500661 A CN 102500661A
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Abstract
The invention discloses a straightening device for the large-diameter material of a cold header and a straightening method. The straightening device comprises a wire rod component, a pressing frame and a support wheel, wherein the wire rod component is matched with the pressing frame; a rolling shaft straightening frame A, a rolling shaft straightening frame B and a roller straightening frame are sequentially arranged between the wire rod component and the support wheel; and the rolling shaft straightening frame A, the rolling shaft straightening frame B, the roller straightening frame and the support wheel are in a coaxial structure. In the invention, an optimal combination method of rolling shaft straightening and roller straightening is adopted to achieve the aim of straightening the multi-directional multi-radian curved form of the material before cold heading, thus, the large-diameter material can be quickly straightened in a short path and the elastic rebound of the heading product can be effectively reduced, and the yield or the yield of secondary processing is improved; in the straightening method, the headed material is placed on the wire rod component in a wire rod form and then pulled to sequentially enter the multi-dimensional rolling shaft straightening frame A and rolling shaft straightening frame B and the roller straightening frame under the restriction and guidance of the pressing frame so as to finish the material straightening; and finally, the material enters the body of the cold header.
Description
Technical field
The present invention relates to a kind of cold headers assembly, especially for the coalignment and the aligning method of cold headers major diameter material.
Background technology
The metal cold heading technique is a kind of no cutting technology, and multi-locating automatic cold forging machine processing is a kind of continuous processing mode, so processed object generally gets into technical process to coil circular formula.
The specification of the processed object of multi-locating automatic cold forging machine has covered 5～33 millimeters on straight warp, even near 40 millimeters.
By the hot rolling of rammer metal material process, dish circle, cooling and logistics progress; Material unavoidably produces multidimensional stress; Also just form the physical effect that material is multidirectional, multi-radian is crooked, finally forming the initial bending condition is the curvature of space model, and its three-dimensional projection plane is a plurality of S type arc combinations.Although material has the heat treatment process of a stress relief annealing before rammer; But material then is the reduction case hardness that eliminates stress in annealing in process in the real-time working condition condition; But multidirectional, multi-radian curvature of space still can not improve; So, the first alignment of palpus before long cut-out process procedure is got in material entering cold-heading, the preceding straightening technology of cold headers rammer under the current this working condition generally all is the methods obligated that adopt conventional pressure mode.
Straightening technology had difference in essence with general slender axles straightening technology before cold headers were upset, the dynamic mode that the former continuous straight line moves, and the latter is discontinuous fixedly static schema.So the former is dynamically uncontrollable with the pressure amount time, the latter is that static state is controlled.
Cold-heading is the technical process that the strong constraint cold forging squeezes, as insufficient this of material alignment just can produce harmful effect to demanding rammer workpieces quality before upsetting. can produce elastic resilience after the most just upsetting, be prone to cause inferior the goods secondary operations.Secondly the bending of material can have a strong impact on drawing-inroller to the dragging and the length metering precision of machined material, is prone to produce the instability of feeding displacement scale.Cause product size bad.
Need a cover novel apparatus do the alignment of more optimizing for this reason, in the hope of the material linearity of the best, simultaneously again not the crushing material surface guarantee the quality that goods are shaped.
The general diameter of machined material is major diameter in home-made machine at 16～33mm in the cold heading technique.
Summary of the invention
The objective of the invention is to provide for the deficiency that solves above-mentioned prior art a kind of can be efficiently and more reasonably multidirectional, that multi-radian curvature of space kenel is carried out the alignment coalignment and the aligning method that are used for cold headers major diameter material to material before the cold-heading.
To achieve these goals; The coalignment that is used for cold headers major diameter material that the present invention designed; Comprise dish circle assembly, binder frame and support roller; Dish circle assembly cooperates with the binder frame, it is characterized in that being provided with roller bearing alignment A frame, roller bearing alignment B frame and roller alignment frame successively between said dish circle assembly and the support roller, and roller bearing alignment A frame, roller bearing alignment B frame, roller alignment frame and support roller are coaxial configuration.Adopt the structure of the optimum organization of roller bearing alignment frame and roller alignment frame in the said structure, with reach to material before the cold-heading multidirectional-purpose that multi-radian curvature of space kenel is carried out alignment.
As preferably; Said roller bearing alignment A frame and roller bearing alignment B frame are by pedestal and roll the roller composition; Place its cross-wise direction of roller of rolling on the pedestal all to be three-dimensional 120 degree distribution equalizing structures; Length direction all is multiple pressure point and many fulcrum dislocation arrangements, and is that 90 degree shift to install structure between roller bearing alignment A frame and the roller bearing alignment B frame, realizes continuous multi-directional, the alignment of multi-radian roller bearing; Said roller alignment frame is made up of power fixed wheel, fulcrum fixed wheel, pressure point driving wheel, the governor motion of exerting pressure, reducing motor and drive sprocket A; Power fixed wheel and fulcrum driving wheel and pressure point driving wheel are the horizontal structure setting; And fulcrum fixed wheel and pressure point driving wheel are the horizontal displacement combining structure; The realization multiple pressure is put the alignment of many fulcrums recurvation roller; The governor motion of exerting pressure is connected cooperation with the pressure point driving wheel, and said reducing motor cooperates with the power fixed wheel through drive sprocket A group, and the power fixed wheel utilizes frictional drive that material is carried out Flexible Drag; Said dish circle assembly sidewinders tube, master rotor, drive sprocket B group and motor by two to be formed, and master rotor sidewinders and tin becomes " article " font fixed structure with two, and master rotor sidewinders between the tube at two; Making dish circle assembly not produce in the blowing process rocks and beats; Guarantee steady blowing, motor cooperates with master rotor through drive sprocket B group, and master rotor is under the drive of motor; Utilize frictional force that dish circle assembly is rotated, to reach the auxiliary effect that material moves that promotes.
In order to guarantee that material does not produce deflection and gets into next alignment frame smoothly in advancing, the transition rings between said roller bearing alignment A frame, roller bearing alignment B frame and the roller alignment frame three is equipped with guide pipe.
The invention still further relates to a kind of aligning method that is used for cold headers major diameter material; It is characterized in that may further comprise the steps: at first will be placed on the dish circle assembly to coil circular attitude by the rammer material; Then material successively gets into various dimensions roller bearing alignment A frame and roller bearing alignment B frame and roller alignment frame through pulling by binder frame constraint guiding; Material is accomplished alignment, finally gets into the cold headers body.
The coalignment that is used for cold headers major diameter material that the present invention obtains; It adopts the optimum organization method of roller bearing alignment and roller alignment; With reach to material before the cold-heading multidirectional-purpose that multi-radian curvature of space kenel is carried out alignment; This largely makes the major diameter material also can effectively reduce rammer goods elastic resilience in the quick alignment of short path, improves the yield rate of yield rate or secondary operations; In order to guarantee that material does not produce deflection and gets into next alignment frame smoothly in advancing, the transition rings between said roller bearing alignment A frame, roller bearing alignment B frame and the roller alignment frame three is equipped with guide pipe; This aligning method at first will be placed on the dish circle assembly to coil circular attitude by the rammer material; Then material successively gets into various dimensions roller bearing alignment A frame and roller bearing alignment B frame and roller alignment frame through pulling by binder frame constraint guiding; Material is accomplished alignment, finally gets into the cold headers body.
Description of drawings
Fig. 1 is the overall structure sketch map of embodiment 1;
Fig. 2 is a circle supporting construction sketch map in the embodiment 1 mid-game circle assembly;
Fig. 3 is the end face structure sketch map of roller bearing alignment A frame and roller bearing alignment B frame among the embodiment 1;
Fig. 4 is the side structure sketch map of roller bearing alignment A frame and roller bearing alignment B frame among the embodiment 1;
Fig. 5 is the partial structurtes sketch map of roller alignment frame among the embodiment 1;
Fig. 6 is the overall structure sketch map of embodiment 2.
Among the figure: dish circle assembly 1, master rotor 11, sidewinder tube 12, motor 13, drive sprocket B group 14, binder frame 2, roller bearing alignment A frame 3, roller bearing alignment B frame 4, pedestal 341, roll roller 342, roller alignment frame 5, power fixed wheel 51, fulcrum fixed wheel 52, piezoelectricity driving wheel 53, the governor motion 54 of exerting pressure, reducing motor 55, drive sprocket A group 56, support roller 6, guide pipe 7, material 8.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment 1:
Like Fig. 1, Fig. 3, Fig. 4 and shown in Figure 5; The coalignment that is used for cold headers major diameter material that present embodiment provides; Comprise dish circle assembly 1, binder frame 2 and support roller 6; Dish circle assembly 1 cooperates with binder frame 2, is provided with roller bearing alignment A frame 3, roller bearing alignment B frame 4 and roller alignment frame 5 successively between dish circle assembly 1 and the support roller 6, and roller bearing alignment A frame 3, roller bearing alignment B frame 4, roller alignment frame 5 and support roller 6 are coaxial configuration.Adopt the structure of roller bearing alignment A frame 3, roller bearing alignment B frame 4 and the optimum organization of roller alignment frame 5 in the said structure, with reach to material before the cold-heading 8 multidirectional-purpose that multi-radian curvature of space kenel is carried out alignment.
Said roller bearing alignment A frame 3 and roller bearing alignment B frame 4 are by pedestal 341 and roll roller 342 compositions; Place roller 342 its cross-wise direction of rolling on the pedestal 341 all to be three-dimensional 120 degree distribution equalizing structures; Length direction all is multiple pressure point and many fulcrum dislocation arrangements; And be that 90 degree shift to install structure between roller bearing alignment A frame 3 and the roller bearing alignment B frame 4, realize continuous multi-directional, the alignment of multi-radian roller bearing; Said roller alignment frame 5 is made up of power fixed wheel 51, fulcrum fixed wheel 52, pressure point driving wheel 53, the governor motion 54 of exerting pressure, reducing motor 55 and drive sprocket A group 56; Power fixed wheel 51 is the horizontal structure setting with fulcrum driving wheel 52 with pressure point driving wheel 53; And fulcrum fixed wheel 52 is the horizontal displacement combining structure with pressure point driving wheel 53; The realization multiple pressure is put the alignment of many fulcrums recurvation roller, and the governor motion 54 of exerting pressure is connected cooperation with pressure point driving wheel 53, and the governor motion 54 of exerting pressure is realized the pressure amount control of pressure point driving wheels 53; Reducing motor 55 cooperates with power fixed wheel 51 through drive sprocket A group 56, and power fixed wheel 51 utilizes frictional drive that material 8 is carried out Flexible Drag; Flexible Drag is insider's a known technology, so seldom be described in detail at this; As shown in Figure 2; Said dish circle assembly 1 sidewinders tube 12, master rotor 11, drive sprocket B group 14 and motor 13 by two to be formed, and master rotor 11 sidewinders 12 one-tenth " article " font fixed structures of tube with two, and master rotor 11 sidewinders between the tube 12 at two; Making dish circle assembly 1 not produce in the blowing process rocks and beats; Guarantee steady blowing, motor 13 cooperates with master rotor 11 through drive sprocket B group 14, and master rotor 11 is under the drive of motor 13; Utilize frictional force that dish circle assembly 1 is rotated, to reach the auxiliary effect that material 8 moves that promotes.
The invention still further relates to a kind of aligning method that is used for cold headers major diameter material; This method at first will be placed on the dish circle assembly 1 to coil circular attitude by rammer material 8; Then material 8 successively gets into various dimensions roller bearing alignment A frame 3 and roller bearing alignment B frame 4 and roller alignment frame 5 through pulling by binder frame 2 constraint guiding; Material 8 is accomplished alignment, finally gets into the cold headers body.
Embodiment 2:
As shown in Figure 6; The coalignment that is used for cold headers major diameter material that present embodiment provides; Its general structure is consistent with embodiment 1; But in order to guarantee that material 8 does not produce deflection and gets into next alignment frame smoothly in advancing, the transition rings between said roller bearing alignment A frame 3, roller bearing alignment B frame 4 and roller alignment frame 8 threes is equipped with guide pipe 7.
Claims (10)
1. coalignment that is used for cold headers major diameter material; Comprise dish circle assembly (1), binder frame (2) and support roller (6); Dish circle assembly (1) cooperates with binder frame (2); It is characterized in that being provided with roller bearing alignment A frame (3), roller bearing alignment B frame (4) and roller alignment frame (5) successively between said dish circle assembly (1) and the support roller (6), roller bearing alignment A frame (3), roller bearing alignment B frame (4), roller alignment frame (5) and support roller (6) are coaxial configuration.
2. the coalignment that is used for cold headers major diameter material according to claim 1; It is characterized in that said roller bearing alignment A frame (3) and roller bearing alignment B frame (4) are by pedestal (341) with roll roller (342) and form; Place its cross-wise direction of roller (342) of rolling on the pedestal (341) all to be three-dimensional 120 degree distribution equalizing structures; Length direction all is multiple pressure point and many fulcrum dislocation arrangements, and is that 90 degree shift to install structure between roller bearing alignment A frame (3) and the roller bearing alignment B frame (4).
3. the coalignment that is used for cold headers major diameter material according to claim 1 and 2; It is characterized in that said roller alignment frame (5) is made up of power fixed wheel (51), fulcrum fixed wheel (52), pressure point driving wheel (53), the governor motion of exerting pressure (54), reducing motor (55) and drive sprocket A group (56); Power fixed wheel (51) and fulcrum driving wheel (52) are the horizontal structure setting with pressure point driving wheel (53); And fulcrum fixed wheel (52) and pressure point driving wheel (53) are the horizontal displacement combining structure, and the governor motion of exerting pressure (54) is connected cooperation with pressure point driving wheel (53); Said reducing motor (55) cooperates with power fixed wheel (51) through drive sprocket A group (56).
4. the alignment frame that is used for cold headers major diameter material according to claim 1 and 2; It is characterized in that said dish circle assembly (1) sidewinders tube (12), master rotor (11), drive sprocket B group (14) and motor (13) by two and forms; Master rotor (11) with two sidewinder the tube (12) become " article " font fixed structure; Master rotor (11) is positioned at two and sidewinders between the tube (12), and motor (13) cooperates with master rotor (11) through drive sprocket B group (14).
5. the alignment frame that is used for cold headers major diameter material according to claim 3; It is characterized in that said dish circle assembly (1) sidewinders tube (12), master rotor (11), drive sprocket B group (14) and motor (13) by two and forms; Master rotor (11) with two sidewinder the tube (12) become " article " font fixed structure; Master rotor (11) is positioned at two and sidewinders between the tube (12), and motor (13) cooperates with master rotor (11) through drive sprocket B group (14).
6. the alignment frame that is used for cold headers major diameter material according to claim 1 and 2 is characterized in that the transition rings between said roller bearing alignment A frame (3), roller bearing alignment B frame (4) and roller alignment frame (5) three is equipped with guide pipe (7).
7. the coalignment that is used for cold headers major diameter material according to claim 3 is characterized in that the transition rings between said roller bearing alignment A frame (3), roller bearing alignment B frame (4) and roller alignment frame (5) three is equipped with guide pipe (7).
8. the coalignment that is used for cold headers major diameter material according to claim 4 is characterized in that the transition rings between said roller bearing alignment A frame (3), roller bearing alignment B frame (4) and roller alignment frame (5) three is equipped with guide pipe (7).
9. the coalignment that is used for cold headers major diameter material according to claim 5 is characterized in that the transition rings between said roller bearing alignment A frame (3), roller bearing alignment B frame (4) and roller alignment frame (5) three is equipped with guide pipe (7).
10. the aligning method that is used for cold headers major diameter material according to claim 1; It is characterized in that may further comprise the steps: at first will be placed on the dish circle assembly (1) to coil circular attitude by rammer material (8); Then material (8) successively gets into various dimensions roller bearing alignment A frame (3) and roller bearing alignment B frame (4) and roller alignment frame (5) through pulling by binder frame (2) constraint guiding; Material (8) is accomplished alignment, finally gets into the cold headers body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103113864A CN102500661A (en) | 2011-10-14 | 2011-10-14 | Straightening device for large-diameter material of cold header and straightening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103113864A CN102500661A (en) | 2011-10-14 | 2011-10-14 | Straightening device for large-diameter material of cold header and straightening method |
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| CN102500661A true CN102500661A (en) | 2012-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103113864A Pending CN102500661A (en) | 2011-10-14 | 2011-10-14 | Straightening device for large-diameter material of cold header and straightening method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143595A (en) * | 2013-03-21 | 2013-06-12 | 宁波海星机械制造有限公司 | Portable straightening mechanism of multi-station cold header |
| CN105033159A (en) * | 2015-08-12 | 2015-11-11 | 浙江东瑞机械工业有限公司 | Straightening manipulator device of cold header |
| CN105312443A (en) * | 2015-11-13 | 2016-02-10 | 衢州学院 | Self-correcting pipe feeding unit and self-correcting pipe feeding mechanism of automatic pipe coiler |
| CN109127986A (en) * | 2018-07-24 | 2019-01-04 | 阜阳市圣贝诺装饰工程有限公司 | A kind of industrial automation equipment Hardware fitting production cold headers backgauge component |
| CN109807200A (en) * | 2019-03-29 | 2019-05-28 | 上海和科设备制造有限公司 | A kind of aligning mechanism and flat tube cutter device |
| CN112371868A (en) * | 2020-10-26 | 2021-02-19 | 广州法思特精密五金有限公司 | Screw head forming process |
| CN112474888A (en) * | 2020-11-18 | 2021-03-12 | 中机试验装备股份有限公司 | Elastic supporting mechanism for straightening |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87105049A (en) * | 1987-08-01 | 1988-05-25 | 东北工学院 | Multi-roll straightening machine |
| CN2040012U (en) * | 1988-11-26 | 1989-06-28 | 姜德永 | Rolling-pulley type straightening machine for disc-section wire steel |
| GB2216443A (en) * | 1988-03-15 | 1989-10-11 | Bicc Plc | Mineral insulated cable straightening tool |
| JP2002001431A (en) * | 2000-06-19 | 2002-01-08 | Suncall Corp | Surface reforming correction machine for round bar steel stock |
| KR100812244B1 (en) * | 2006-08-25 | 2008-03-13 | 한국원자력연구원 | Straightening machine for polygonal metal rod and tube |
| CN101279336A (en) * | 2008-05-20 | 2008-10-08 | 太原市通泽成套设备有限公司 | Three-roller flattening machine |
-
2011
- 2011-10-14 CN CN2011103113864A patent/CN102500661A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87105049A (en) * | 1987-08-01 | 1988-05-25 | 东北工学院 | Multi-roll straightening machine |
| GB2216443A (en) * | 1988-03-15 | 1989-10-11 | Bicc Plc | Mineral insulated cable straightening tool |
| CN2040012U (en) * | 1988-11-26 | 1989-06-28 | 姜德永 | Rolling-pulley type straightening machine for disc-section wire steel |
| JP2002001431A (en) * | 2000-06-19 | 2002-01-08 | Suncall Corp | Surface reforming correction machine for round bar steel stock |
| KR100812244B1 (en) * | 2006-08-25 | 2008-03-13 | 한국원자력연구원 | Straightening machine for polygonal metal rod and tube |
| CN101279336A (en) * | 2008-05-20 | 2008-10-08 | 太原市通泽成套设备有限公司 | Three-roller flattening machine |
Non-Patent Citations (1)
| Title |
|---|
| 贾梦帮: "卧式滚子冷镦机送料双向校直装置的改进", 《机械工人热加工》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143595A (en) * | 2013-03-21 | 2013-06-12 | 宁波海星机械制造有限公司 | Portable straightening mechanism of multi-station cold header |
| CN105033159A (en) * | 2015-08-12 | 2015-11-11 | 浙江东瑞机械工业有限公司 | Straightening manipulator device of cold header |
| CN105312443A (en) * | 2015-11-13 | 2016-02-10 | 衢州学院 | Self-correcting pipe feeding unit and self-correcting pipe feeding mechanism of automatic pipe coiler |
| CN105312443B (en) * | 2015-11-13 | 2017-06-27 | 衢州学院 | Pipe unit and self-correcting tube feeding mechanism are sent in a kind of self-correcting of automatic pipe winding machine |
| CN109127986A (en) * | 2018-07-24 | 2019-01-04 | 阜阳市圣贝诺装饰工程有限公司 | A kind of industrial automation equipment Hardware fitting production cold headers backgauge component |
| CN109807200A (en) * | 2019-03-29 | 2019-05-28 | 上海和科设备制造有限公司 | A kind of aligning mechanism and flat tube cutter device |
| CN112371868A (en) * | 2020-10-26 | 2021-02-19 | 广州法思特精密五金有限公司 | Screw head forming process |
| CN112371868B (en) * | 2020-10-26 | 2022-03-15 | 广州法思特精密五金有限公司 | Screw head forming process |
| CN112474888A (en) * | 2020-11-18 | 2021-03-12 | 中机试验装备股份有限公司 | Elastic supporting mechanism for straightening |
| CN112474888B (en) * | 2020-11-18 | 2023-07-21 | 中机试验装备股份有限公司 | Elastic supporting mechanism for alignment |
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Address after: The national high tech Zone of Ningbo city in Zhejiang Province, 315103 South Road No. 1832 (Ningbo Sijin machinery Limited by Share Ltd) Applicant after: Ningbo Sijin Machinery Company Limited Address before: The national high tech Zone of Ningbo city in Zhejiang Province, 315103 South Road No. 1832 (Ningbo Sijin Machinery Co. Ltd.) Applicant before: Ningbo SiJin Machinery Co., Ltd. |
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Application publication date: 20120620 |