CN103264707B - A kind of adopt stretch bending process to manufacture track train component and manufacture method - Google Patents
A kind of adopt stretch bending process to manufacture track train component and manufacture method Download PDFInfo
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- CN103264707B CN103264707B CN201310199510.1A CN201310199510A CN103264707B CN 103264707 B CN103264707 B CN 103264707B CN 201310199510 A CN201310199510 A CN 201310199510A CN 103264707 B CN103264707 B CN 103264707B
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
A kind of adopt stretch bending process to manufacture track train component and manufacture method, a kind of track train door pillar of being made up of silicomanganese aluminum rectangular tube or doorframe component, it has plural linear portion and one or more bending section, this component is when not changing aluminium-alloy pipe hardness condition, adopts stretch-bending molding process one step to produce.The manufacture method of this door pillar or doorframe component is drawing stress silicomanganese aluminum rectangular tube being applied to Rp0.2 > 275Mpa, it is made to enter plastic period, make it bending subsequently, until the curved interior surface of rectangular tube fits on stretch bending mold, be finally again stretched to and reach about 120% of material yield strength.Adopt the component surface of the method production without impression, inner flawless flaw, good stability of the dimension, the method speed of production is fast, and qualification rate is high.
Description
Technical field
The present invention relates to a kind of component of track train, especially relate to a kind of adopt stretch bending process to produce track train door pillar or the component of doorframe and manufacture method thereof.
Background technology
Track train widespread use as a kind of important vehicle always since appearance, particularly in recent years since, high-speed railway passenger development is rapidly.In order to ensure high-speed railway passenger from heavy and light, aluminum alloy materials is widely used among the manufacturing of the appurtenances such as the door and window of train.Wherein, the field of application of Aluminum Hollow compo pipe section bar is very extensive, obtains the attention of vast technical personnel.
At present in order to produce door pillar or the doorframe of high-speed railway passenger, the normal aluminum rectangular tube of T5 state that adopts, as raw MAT'L, adopts Multi-step forming explained hereafter.The aluminum alloy hardness of T5 state is higher, in punching course, often phenomenon of rupture occurs, and after Multi-step forming, even the tubing of more than 80% is pulled off or ftractures, and the yield rate of production is extremely low.In addition, aluminum alloy materials may produce small crackle or flaw in punching course, easily affects the bulk strength of door pillar or doorframe, and therefore this production method is difficult to the intensity ensureing door pillar or doorframe.Moreover, after Multi-step forming, produce multiple tracks impression on the surface of aluminum rectangular tube, significantly affects the exterior quality of door pillar or doorframe.
Recently, in order to produce door pillar or the doorframe of high-speed railway passenger, the aluminum rectangular tube of T5 state is reduced hardness to T4 state by technical personnel, then carries out Multi-step forming, is heat-treated to T5 state again after punching press.Although the generation that the method can avoid aluminum alloy materials to rupture largely, after shaping, heat-treat the dimensional accuracy being difficult to ensure component again.The door pillar produced through the method or doorframe component poor dimensional stability, qualification rate is also lower.In addition, in heat treatment process, aluminum alloy material surface will be oxidized, and surface there will be variable color, have impact on the exterior quality of door pillar or doorframe.In addition, the explained hereafter flow process in fact changing raw MAT'L hardness condition is longer, and speed of production slowly, is difficult to meet the requirement that economy is produced easily.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the present invention proposes a kind of when not changing material hardness state, through the method for a bending forming production track train component.The technical solution adopted in the present invention is: a kind of track train door pillar or doorframe component, it is made up of aluminium-alloy pipe, there is plural linear portion and one or more bending section, wherein aluminium-alloy pipe is in T5 state, once bending forming in the situation of hardness condition not changing this aluminium-alloy pipe.
The advantage of track train door pillar of the present invention or doorframe component is that component surface does not exist impression and flaw, and the inside of component is detected through metal defect detection and do not found crackle or flaw, and the intensity of component is guaranteed.
In a preferred technical scheme, this aluminium-alloy pipe is silicomanganese aluminium-alloy pipe, preferably silicomanganese aluminum rectangular tube.Described silicomanganese aluminum rectangular tube has a rectangular box, middle partition and upper side edge, and the middle part of rectangular tube is divided into a upper plenum and a lower cavity by middle partition.
A kind of method adopting stretch bending process to manufacture track train door pillar or doorframe component, this door pillar or doorframe component are made up of aluminium-alloy pipe, there is plural linear portion and one or more than one bending section, it is characterized in that the hardness condition keeping aluminium-alloy pipe is T5 state, in the hardness condition situation of immovable aluminium-alloy pipe, stretch bending is carried out to this aluminium-alloy pipe.
A kind of method adopting stretch bending process to manufacture track train door pillar or doorframe component, this door pillar or doorframe component are made up of aluminium-alloy pipe, there is plural linear portion and one or more than one bending section, it is characterized in that described method comprises the following steps:
(1) entire length of getting the raw materials ready according to door pillar or doorframe component, prepares the aluminum alloy pipeline section of appropriate length as stock;
(2) stock prepares the cavity of the aluminum alloy pipeline section described in flexible plug insertion, and adopts clamp pad to be fixed together with flexible plug by aluminium-alloy pipe;
(3) upper stretch benders utilize clamp pad to be clamped on the left and right clamping head of stretch benders by the stock described in being fixed on flexible plug;
(4) stretching utilizes stretch benders to apply the drawing stress of Rp0.2 > 275Mpa to described stock, makes stock enter plastic period;
(5) the bending stretch benders that utilize apply to bend, until the curved interior surface of stock fits in stretch bending mold to described stock;
(6) continuation that again stretches strengthens the drawing stress of the applying of stretch benders, until reach about 120% of aluminum rectangular tube section yield strength;
(7) unload the stretching oil cylinder of return stretch benders, clamping oil cylinder, left and right large arm all unload return, take out component and namely obtain described track train door pillar or doorframe component.
In one preferred embodiment, aluminium-alloy pipe adopts silicomanganese aluminium-alloy pipe, preferably silicomanganese aluminum rectangular tube.Described silicomanganese aluminium-alloy pipe has a rectangular box, middle partition and upper side edge, and the middle part of rectangular tube is divided into upper plenum and lower cavity by middle partition.
The manufacture method of track train door pillar of the present invention or doorframe component, it is advantageous that the component surface adopting the method to produce does not exist impression and next time, and the inside of component is detected through metal defect detection and do not found crackle or flaw, and the intensity of component is guaranteed.The good stability of the dimension of the door pillar that employing method manufactures or doorframe component, qualification rate is close to 100%.In addition, this manufacture method adopts stretch bending process one-shot forming when not changing material hardness state (remaining T5 state), and speed of production can reach more than 3 times of production technology in prior art, and production process is quick, stable.
Accompanying drawing explanation
The door pillar of Fig. 1 for the production of high-speed railway passenger or the aluminum rectangular tube schematic diagram of doorframe component;
The door pillar that Fig. 2 adopts stretch bending process of the present invention to produce or doorframe component finished product schematic diagram;
Fig. 3 stretch benders schematic diagram;
The clamp pad schematic diagram adopted in Fig. 4 stretch bending process of the present invention;
The plug schematic diagram adopted in Fig. 5 stretch bending process of the present invention.
Detailed description of the invention
Performance of the present invention is described in detail below in conjunction with accompanying drawing, but their also paired not restrictions of the present invention, only for example.Simultaneously by illustrating that advantage of the present invention will become clearly and easy understand.
As shown in Figure 1, the raw MAT'L for the production of high-speed railway passenger door pillar of the present invention or doorframe component is aluminum rectangular tube 1, preferably silicomanganese aluminum rectangular tube.This aluminum rectangular tube 1 is in T5 state (solution treatment adds incomplete artificial aging).Rectangular tube 1 is made up of rectangular shaped rim 11, middle partition 12, upper side edge 13, and rectangular shaped rim 11 is separated the tubular cavity of formation two hollows by middle partition 12, i.e. upper plenum 14 and lower cavity 15.Be marked as X-direction along rectangular tube 1 axis direction in figure, being Y-direction along its base, is Z-direction along its side.Rectangular tube 1 is applied along the Y direction the finished product bending high-speed railway passenger door pillar or the doorframe component 2 that can obtain as shown in Figure 2.
In fig. 2, door pillar or doorframe component 2 have one or the more than one section of stretching 21 and one or more than one bending section 22.
Should be understood, the raw MAT'L producing high-speed railway passenger door pillar or doorframe includes but are not limited to aluminum rectangular tube, also can be stainless steel rectangular pipe or other light-weight metal rectangular tubes.
Fig. 3 is the schematic diagram of stretch benders 3 of the present invention, and it has left large arm 31, right large arm 32, left clamping head 33, right clamping head 34, Zola stretch oil cylinder 35, right stretching oil cylinder 36, left clamping oil cylinder 37, right clamping oil cylinder 38, stretch bending bench board 30 and stretch bending mold 39.
As shown in Figure 4, clamp pad 4 is made up of left skewback 41, right skewback 42, packing ring 47, bolt 48 and handle 49.Left skewback 41, for having the wedge-like block of left tilted surface 43, left tilted surface 43 is provided with dovetail furrow 45.Right skewback 42, for having the wedge-like block of right tilted surface 44, right tilted surface 42 is provided with dovetail shaped slide block 46.Left tilted surface 43 and right tilted surface 44 cooperatively interact, and dovetail furrow 45 cooperatively interacts with the shape of dovetail shaped slide block 46.In use, dovetail shaped slide block 46 to insert in dovetail furrow 45 and can be free to slide wherein.The end face of right skewback 42 is provided with a screw (not shown), bolt 48 is screwed in screw by packing ring 47.Under the state that bolt 48 is tightened, the inboard face of packing ring 47 abuts with the end face of clamp pad 4, thus by locked for clamp pad 4.The end face of left skewback 41 is also provided with a handle 49.The face size of clamp pad 4 and the upper plenum 14 of aluminum rectangular tube 1, lower cavity 15 measure-alike, form interference fit when clamp pad 4 is fit into the upper plenum 14 of aluminum rectangular tube and lower cavity 15.
In use procedure, only need left skewback 41 and right skewback 42 to stagger certain distance, under the effect on inclined-plane, the side-to-side dimensions distortion of clamp pad 4, can insert in the cavity of rectangular tube 1 like a cork.Subsequently, knocking left skewback 41 gently can be also fixing intact by the cavity tensioner of rectangular tube 1.Finally bolt 48 is locked.
As shown in Figure 5, flexible plug 5 is made up of substrate 50, multiple upper cushion block 51, connecting strap 52, multiple lower cushion block 53, multiple dowel bolt 54 and multiple plug sheet 55.
Substrate 50 is made up of metal, can produce elastic deformation in the axial direction.Multiple upper cushion block 51 makes roughly trapezoidal block by hard metal, forms a vee, each upper cushion block 51 all has two blind head screws between adjacent two upper cushion blocks 51.The slip that connecting strap 52 is made for elastic sheet metal, its width is identical with upper cushion block 51, offers above for the multiple through holes through bolt, is also provided with a drag hook hole in an end of connecting strap 52.Lower cushion block 53 is trapezium structure, and shape and size match with the triangular cut on upper cushion block 51, each lower cushion block 53 all offers two step-like through holes.Dowel bolt 54 penetrates from the step-like through hole of lower cushion block 53, after by the through hole of connecting strap 52, is screwed in the blind head screw of cushion block 51.The blind head screw hole depth of cushion block, the length of stepped hole of lower cushion block 53 and the length of dowel bolt 54 in appropriate design, make under the state of dowel bolt locking, a space d is there is between upper cushion block 51 and lower cushion block 53, the width of this space d is greater than the thickness of connecting strap 52, and preferably the width in this gap is about four times of connecting strap 52 thickness.Like this, when dowel bolt 54 is locked, bearing fit between the stepped hole of dowel bolt 54 and lower cushion block 53.Plug sheet 55 is made up of elastic sheet metal, and its width is equal to or less than the distance between corresponding two dowel bolts, and this plug sheet 55 in use inserts in upper gap d between cushion block 51 and lower cushion block 53 along connecting strap 52.One end of plug sheet 55 has a drag hook hole.
In use, the curved outside surface end face of substrate 50 being fitted in rectangular tube 1 is inserted in the cavity of rectangular tube 1, inserted successively in the d of space by plug sheet 50 subsequently, so flexible plug 5 fills up the cavity of rectangular tube 1, can ensure that rectangle can not meet accident and is out of shape and forms flaw.Because substrate 50 and connecting strap 2 can elastic deformations, in BENDING PROCESS, flexible plug generation elastic bending, after unloading plug, it is returned to original shape.
The implementation process of the manufacture method of track train door pillar of the present invention or doorframe component is implemented in lower mask body introduction:
(1) get the raw materials ready and the silicomanganese aluminum rectangular tube being in T5 state is cut into the rectangle pipeline section 1 of appropriate length.
(2) stock prepares two flexible plugs 5 to pass in the upper plenum 14 of rectangle pipeline section 1 and lower cavity 15 respectively, again by airtight for the two ends clamp pad 4 of rectangle pipeline section 1 fixing, now rectangle pipeline section 1 is clamped pad 5 and two flexible plugs 4 keep fixing.
(3) clamp pad 4 at rectangle pipeline section 1 two ends is clamped on the left and right clamping head 33,34 of stretch benders 3 by upper stretch benders respectively, and left and right clamping oil cylinder 37,38 moves the two ends getting final product clamp rectangular pipeline section 1 to center.So far rectangle pipeline section 1 is fixed and held on the left and right clamping head of stretch benders 3.
(4) stretching left and right stretching oil cylinder 35,36 is respectively to side-to-side movement, and the axis X direction along rectangle pipeline section 1 applies drawing stress to rectangle pipeline section 1.The pulling force of configuration stretch benders 3, making it the drawing stress be applied on rectangle pipeline section 1 stock is Rp0.2 > 275Mpa, and now rectangle pipeline section 1 enters plastic period.
(5) the left and right large arm 31,32 of bending stretch benders is rocked to the angle of regulation respectively to rear, and the Y-direction along rectangle pipeline section 1 applies bending to rectangle pipeline section 1, rectangle pipeline section 1 is curved to the angle of regulation and fits on stretch bending mold 39.
(6) continuation that again stretches strengthens the pulling force of stretch benders, until reach about 120% of the yield strength of aluminum rectangular tube.
(7) oil cylinder 35,36 that stretches about unloading return unloads, and left and right clamping oil cylinder 37,38 unclamps rectangular tube, left and right stretching oil cylinder 35,36 return, left and right large arm 31,32 return.Now, the finished product that namely the rectangle pipeline section 1 be shaped obtains high-speed railway passenger door pillar or doorframe component 2 is taken out.
The door pillar of this explained hereafter or doorframe component 2 is adopted to be great circle arc rectangular tube parts, stretch bending process one-shot forming is adopted when not changing material hardness state (remaining T5 state), product surface is without any impression or flaw, detect through metal defect detection, do not find internal crack or flaw.Adopt this explained hereafter can ensure the dimensional stability of door pillar or doorframe component 2, conforming product rate close to 100%, faster than former technique more than 3 times of speed of production.Through door pillar or the doorframe component 2 of bending forming, material internal stress obtains elimination, and grain orientation there occurs change, and product strength is significantly improved.
Carried out exemplary description to the specific embodiment of the present invention by reference to the accompanying drawings above, obvious scope of the present invention is not limited thereto, and the various distortion made in the thought that the present invention proposes all do not exceed scope of the present invention.
Claims (8)
1. a track train door pillar or doorframe component, it is made up of aluminium-alloy pipe, there is plural linear portion and one or more bending section, wherein aluminium-alloy pipe is in T5 state, it is characterized in that: described door pillar or doorframe component adopt a stretch-wrap forming technique to make; In a described stretch-bending molding process, flexible plug is inserted in described aluminium-alloy pipe, adopting clamp pad to be fixed on stretch benders by described aluminium-alloy pipe and flexible plug, when not changing the hardness condition of aluminum alloy pipeline section, utilizing stretch benders to carry out stretch bending to described aluminium-alloy pipe.
2. track train door pillar according to claim 1 or doorframe component, is characterized in that: described aluminium-alloy pipe is cross-sectional plane is substantially rectangular aluminum rectangular tube.
3. track train door pillar according to claim 2 or doorframe component, is characterized in that: aluminum rectangular tube has a rectangular box, middle partition and upper side edge, and the middle part of rectangular tube is divided into a upper plenum and a lower cavity by middle partition.
4. track train door pillar according to claim 1 or doorframe component, is characterized in that: described aluminium-alloy pipe is silicomanganese aluminium-alloy pipe.
5. the method adopting stretch bending process to manufacture track train door pillar or doorframe component, this door pillar or doorframe component are made up of aluminium-alloy pipe, there is plural linear portion and one or more than one bending section, it is characterized in that the hardness condition keeping aluminium-alloy pipe is T5 state, flexible plug is inserted in described aluminium-alloy pipe, adopt clamp pad to be fixed on stretch benders by described aluminium-alloy pipe and flexible plug, in the hardness condition situation of immovable aluminium-alloy pipe, stretch bending is carried out to this aluminium-alloy pipe.
6. the method adopting stretch bending process to manufacture track train door pillar or doorframe component, this door pillar or doorframe component are made up of aluminium-alloy pipe, there is plural linear portion and one or more than one bending section, it is characterized in that described method comprises the following steps:
(1) entire length of getting the raw materials ready according to door pillar or doorframe component, prepare the aluminum alloy pipeline section of appropriate length as stock, described aluminum alloy pipeline section is in T5 state;
(2) stock prepares in the cavity of the aluminum alloy pipeline section described in flexible plug insertion, and adopts clamp pad to be fixed together with flexible plug by aluminium-alloy pipe;
(3) upper stretch benders utilize clamp pad to be clamped on the left and right clamping head of stretch benders by the stock described in being fixed on flexible plug;
(4), when being stretching in the hardness condition not changing aluminum alloy pipeline section, utilizing stretch benders to apply the drawing stress of Rp0.2 > 275Mpa to described stock, make stock enter plastic period;
(5) the bending stretch benders that utilize apply to bend, until the curved interior surface of stock fits in stretch bending mold to described stock;
(6) again stretch and continue to strengthen the pulling force of stretch benders, until reach that the drawing stress be applied on stock reaches the yield strength of aluminum rectangular tube section about 120%;
(7) unload the stretching oil cylinder of return stretch benders, clamping oil cylinder, left and right large arm all unload return, take out component and namely obtain described track train door pillar or doorframe component.
7. the manufacture track train door pillar according to claim 5 or 6 or the method for doorframe, it is characterized in that: described aluminium-alloy pipe is the roughly rectangular aluminum rectangular tube of cross-sectional plane, it has a rectangular box, middle partition and upper side edge, and the middle part of rectangular tube is divided into upper plenum and lower cavity by described middle partition.
8. the manufacture track train door pillar according to claim 5 or 6 or the method for doorframe, is characterized in that: described aluminium-alloy pipe is silicomanganese aluminium-alloy pipe.
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| CN201310199510.1A CN103264707B (en) | 2013-05-27 | 2013-05-27 | A kind of adopt stretch bending process to manufacture track train component and manufacture method |
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| CN201310199510.1A CN103264707B (en) | 2013-05-27 | 2013-05-27 | A kind of adopt stretch bending process to manufacture track train component and manufacture method |
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| CN103264707A CN103264707A (en) | 2013-08-28 |
| CN103264707B true CN103264707B (en) | 2015-12-02 |
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| CN201310199510.1A Expired - Fee Related CN103264707B (en) | 2013-05-27 | 2013-05-27 | A kind of adopt stretch bending process to manufacture track train component and manufacture method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106086550A (en) * | 2016-07-21 | 2016-11-09 | 辽宁忠旺集团有限公司 | The production technology of 6061 aluminium alloy stretch bending section bars |
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| SU740344A1 (en) * | 1978-03-27 | 1980-06-15 | Предприятие П/Я В-2946 | Mandrel for tube bending |
| CN1970185A (en) * | 2006-12-05 | 2007-05-30 | 成都飞机工业（集团）有限责任公司 | Bending and shaping method for hollow aluminum alloy extrusion section bar |
| CN201659219U (en) * | 2010-03-13 | 2010-12-01 | 长春英利汽车部件有限公司 | Wedge-shaped telescopic clamping device of aluminium alloy profile |
| CN102172689A (en) * | 2011-01-26 | 2011-09-07 | 上海交通大学 | Electroplastic bending device for light metal section |
| CN202624236U (en) * | 2012-04-17 | 2012-12-26 | 安徽盛世高科轨道装备有限公司 | New structure of door of railway locomotive |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5450003B2 (en) * | 2009-11-30 | 2014-03-26 | 三和シヤッター工業株式会社 | Door panel window structure |
-
2013
- 2013-05-27 CN CN201310199510.1A patent/CN103264707B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU740344A1 (en) * | 1978-03-27 | 1980-06-15 | Предприятие П/Я В-2946 | Mandrel for tube bending |
| CN1970185A (en) * | 2006-12-05 | 2007-05-30 | 成都飞机工业（集团）有限责任公司 | Bending and shaping method for hollow aluminum alloy extrusion section bar |
| CN201659219U (en) * | 2010-03-13 | 2010-12-01 | 长春英利汽车部件有限公司 | Wedge-shaped telescopic clamping device of aluminium alloy profile |
| CN102172689A (en) * | 2011-01-26 | 2011-09-07 | 上海交通大学 | Electroplastic bending device for light metal section |
| CN202624236U (en) * | 2012-04-17 | 2012-12-26 | 安徽盛世高科轨道装备有限公司 | New structure of door of railway locomotive |
Non-Patent Citations (1)
| Title |
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| 复杂截面铝合金型材拉弯成形有限元模拟;张晓丽等;《塑性工程学报》;20040831;第11卷(第4期);全文 * |
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