CN103264707A - Rail train component manufactured through stretch bending technology and manufacturing method thereof - Google Patents

Rail train component manufactured through stretch bending technology and manufacturing method thereof Download PDF

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CN103264707A
CN103264707A CN2013101995101A CN201310199510A CN103264707A CN 103264707 A CN103264707 A CN 103264707A CN 2013101995101 A CN2013101995101 A CN 2013101995101A CN 201310199510 A CN201310199510 A CN 201310199510A CN 103264707 A CN103264707 A CN 103264707A
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aluminium
alloy pipe
stretch
door pillar
doorframe
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CN103264707B (en
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倪慨宇
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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
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Abstract

The invention discloses a rail train component manufactured through a stretch bending technology and a manufacturing method thereof. The rail train door post or door frame component composed of a silicon-manganese aluminum alloy rectangular pipe is provided with more than two straight line sections and one or more curved sections, and the component is produced in a one-step mode through the stretch bending technology under the situation of not changing the hardness state of the aluminum alloy pipe. According to the manufacturing method of the door post or door frame component, stretching stress with Rp0.2 being larger than 275MPa is exerted on the silicon-manganese aluminum alloy rectangular pipe, the silicon-manganese aluminum alloy rectangular pipe enters the plastic deformation step and then is curved until the surface of the curved inner side of the rectangular pipe is attached to a stretch bending mold, and finally the rectangular pipe is stretched until the yield strength of materials reaches about 120%. According to the component produced by the manufacturing method, the surface has no indentation, no cracks and flaws exist inside, dimensional stability is good, and the manufacturing method is high in production speed and qualified rate.

Description

A kind of track train member and manufacture method thereof that adopts stretch bending process to make
Technical field
The present invention relates to a kind of member of track train, especially relate to a kind of track train door pillar of stretch bending process production or member and manufacture method thereof of doorframe of adopting.
Background technology
Track train since coming out always as a kind of important vehicle and widespread use, particularly in recent years since, the 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 appurtenances such as door and window of train.Wherein, the field of application of Aluminum Hollow compo pipe section bar is very extensive, has obtained the attention of vast technical personnel.
Door pillar or doorframe in order to produce high-speed railway passenger often adopts the aluminum rectangular tube of T5 state as raw MAT'L at present, adopts repeatedly Sheet Metal Forming Technology production.The aluminum alloy hardness of T5 state is higher, the normal phenomenon of rupture that takes place in punching course, and after the multiple tracks punching press, even 80% above tubing broken or ftractureed, and the yield rate of production is extremely low.In addition, aluminum alloy materials may produce small crackle or flaw in punching course, influences the bulk strength of door pillar or doorframe easily, so this production method is difficult to guarantee the intensity of door pillar or doorframe.Moreover, produce the multiple tracks impression through the surface in aluminum rectangular tube after the multiple tracks punching press, appreciable impact the exterior quality of door pillar or doorframe.
Recently, for door pillar or the doorframe of producing high-speed railway passenger, technical personnel reduces hardness to the T4 state with the aluminum rectangular tube of T5 state, carries out the multiple tracks punching press then, it is heat-treated to the T5 state after the punching press again.Though this method can be avoided the generation of aluminum alloy materials fracture largely, heat-treat the dimensional accuracy that is difficult to guarantee member after the moulding again.Through door pillar or doorframe component poor dimensional stability that this method is produced, qualification rate is also lower.In addition, oxidation will take place in aluminum alloy material surface in the heat treatment process, and variable color can appear in the surface, has influenced the exterior quality of door pillar or doorframe.In addition, the explained hereafter flow process that in fact changes raw MAT'L hardness state is longer, and speed of production is very slow, is difficult to satisfy 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 under the situation that does not change the material hardness state, through the method for a bending forming production track train member.The technical solution adopted in the present invention is: a kind of track train door pillar or doorframe component, it is made of aluminium-alloy pipe, have plural linear portion and one or more bending section, wherein aluminium-alloy pipe is in the T5 state, at the situation of the hardness state that does not change this aluminium-alloy pipe bending forming next time.
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 member is detected through metal defect detection and do not found crackle or flaw, and the intensity of member is guaranteed.
In an optimized technical scheme, this aluminium-alloy pipe is the silicomanganese aluminium-alloy pipe, preferably the silicomanganese aluminum rectangular tube.Described silicomanganese aluminum rectangular tube has a rectangular box, middle partition and upper side edge, and middle partition is divided into a upper plenum and a following cavity with the middle part of rectangular tube.
A kind of method that adopts stretch bending process to make track train door pillar or doorframe component, this door pillar or doorframe component are made of aluminium-alloy pipe, have plural linear portion and one or more than one bending section, it is characterized in that keeping the hardness state of aluminium-alloy pipe is the T5 state, carries out stretch bending to this aluminium-alloy pipe under the hardness state status of immovable aluminium-alloy pipe.
A kind of method that adopts stretch bending process to make track train door pillar or doorframe component, this door pillar or doorframe component are made of aluminium-alloy pipe, have plural linear portion and one or more than one bending section, it is characterized in that described method may further comprise the steps:
(1) gets the raw materials ready according to the entire length of door pillar or doorframe component, prepare the aluminum alloy pipeline section of appropriate length as stock;
(2) stock prepares flexible plug is inserted the cavity of described aluminum alloy pipeline section, and adopts clamp pad that aluminium-alloy pipe is fixing together with flexible plug;
(3) the described stock that stretch benders utilize clamp pad will be fixed on the flexible plug on is clamped on the left and right sides clamping head of stretch benders;
(4) stretch and to utilize stretch benders that described stock is applied the drawing stress of Rp0.2＞275Mpa, make stock enter the plastic deformation stage;
(5) bending utilizes stretch benders that described stock is applied bending, fits in the stretch bending mould until the curved interior surface of stock;
(6) stretch to continue strengthen the drawing stress that applies of stretch benders again, until reaching about 120% of aluminum rectangular tube section yield strength;
(7) the stretching oil cylinder of unloading return stretch benders, clamping oil cylinder, about big arm all unload return, take out member and namely obtain described track train door pillar or doorframe component.
One preferred embodiment in, 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 middle partition is divided into upper plenum and following cavity with the middle part of rectangular tube.
The manufacture method of track train door pillar of the present invention or doorframe component it is advantageous that the component surface that adopts this method to produce does not exist impression and next time, and the inside of member is detected through metal defect detection and do not found crackle or flaw, and the intensity of member is guaranteed.The door pillar that the employing method is made or the dimensional stability of doorframe component are good, and qualification rate is near 100%.In addition, this manufacture method adopts the stretch bending process one-shot forming under the situation that does not change material hardness state (remaining the T5 state), and speed of production can reach more than 3 times of production technology in the prior art, and production process is quick, stable.
Description of drawings
Fig. 1 is for the production of the door pillar of high-speed railway passenger or the aluminum rectangular tube scheme drawing of doorframe component;
Door pillar or doorframe component finished product scheme drawing that Fig. 2 adopts stretch bending process of the present invention to produce;
Fig. 3 stretch benders scheme drawing;
The clamp pad scheme drawing that adopts in Fig. 4 stretch bending process of the present invention;
The plug scheme drawing that adopts in Fig. 5 stretch bending process of the present invention.
The specific embodiment
Describe performance of the present invention in detail below in conjunction with accompanying drawing, but their also paired restrictions of the present invention are inadequately only given an example.Simultaneously by illustrating that advantage of the present invention will become clear more and understanding easily.
As shown in Figure 1, be aluminum rectangular tube 1 for the production of the raw MAT'L of high-speed railway passenger door pillar of the present invention or doorframe component, silicomanganese aluminum rectangular tube preferably.This aluminum rectangular tube 1 is in T5 state (solution treatment adds incomplete artificial aging).Rectangular tube 1 is made of rectangular shaped rim 11, middle partition 12, upper side edge 13, and partition 12 separately forms the tubular cavity of two hollows, i.e. upper plenum 14 and following cavity 15 in rectangular shaped rim 11 quilts.Being marked as directions X along rectangular tube 1 axis direction among the figure, is Y-direction along its base, is the Z direction along its side.With rectangular tube 1 along Y-direction apply bending can obtain as shown in Figure 2 the high-speed railway passenger door pillar or the finished product of doorframe component 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.
What should be understood is that the raw MAT'L of 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 scheme drawing of stretch benders 3 of the present invention, and it has the big arm 31 in a left side, right arm 32, left clamping head 33, right clamping head 34, Zola greatly 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 mould 39.
As shown in Figure 4, clamp pad 4 is made of left skewback 41, right skewback 42, packing ring 47, bolt 48 and handle 49.Left side skewback 41 is for having the wedge-like block of left tilted surface 43, and left tilted surface 43 is provided with dovetail furrow 45.Right skewback 42 is for having the wedge-like block of right tilted surface 44, and 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 inserts in the dovetail furrow 45 and can be free to slide therein.The end face of right skewback 42 is provided with a screw (not shown), and bolt 48 screws in the screw by packing ring 47.Under the state that bolt 48 is tightened, the inboard face of packing ring 47 and the end face butt of clamp pad 4, thus clamp pad 4 is locked.Also be provided with a handle 49 on the end face of left side skewback 41.The upper plenum 14 of the face size of clamp pad 4 and aluminum rectangular tube 1, down cavity 15 is measure-alike, formation interference fit when clamp pad 4 is fit into the upper plenum 14 of aluminum rectangular tube and following cavity 15.
In the use, the certain distance that only left skewback 41 and right skewback 42 need be staggered, under the effect on inclined-plane, the distortion of the side-to-side dimensions of clamp pad 4 can be inserted in the cavity of rectangular tube 1 like a cork.Subsequently, knocking left skewback 41 gently can be also fixing intact with the cavity tensioner of rectangular tube 1.At last bolt 48 lockings are got final product.
As shown in Figure 5, flexible plug 5 is made of substrate 50, a plurality of cushion block 51, connecting strap 52, a plurality of lower cushion block 53, a plurality of dowel bolt 54 and a plurality of plug sheet 55 gone up.
Substrate 50 is made of metal, can produce elastic deformation in the axial direction.A plurality of upward cushion blocks 51 are to make roughly trapezoidal block by hard metal, go up for adjacent two to constitute a vee between the cushion block 51, all have two blind screws on each on the cushion block 51.The slip that connecting strap 52 is made for elastic sheet metal, its width is identical with last cushion block 51, offers above be used to a plurality of through holes that pass bolt, also is 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 triangular cut on the last cushion block 51, all offer two step-like through holes on each lower cushion block 53.Dowel bolt 54 penetrates from the step-like through hole of lower cushion block 53, by behind the through hole of connecting strap 52, is screwed in blind the screw of cushion block 51.The length of the stepped hole of blind the screw degree of depth of cushion block, lower cushion block 53 and the length of dowel bolt 54 on the appropriate design, make under the state of dowel bolt locking, there is a space d between last cushion block 51 and the 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 lockings, bearing fit between the stepped hole of dowel bolt 54 and lower cushion block 53.Plug sheet 55 is made 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 the gap d that goes up between cushion block 51 and the lower cushion block 53 along connecting strap 52.One end of plug sheet 55 has a drag hook hole.
In use, insert in the cavity of rectangular tube 1 on the curved outside surface that the end face of substrate 50 is fitted in rectangular tube 1, subsequently plug sheet 50 is inserted in the d of space successively, flexible like this plug 5 fills up the cavity of rectangular tube 1, can ensure that rectangle can not meet accident distortion and form flaw.Because substrate 50 and connecting strap 2 can elastic deformations, in the BENDING PROCESS, flexible plug generation elastic bending, after waiting to unload 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 following mask body introduction:
(1) the get the raw materials ready silicomanganese aluminum rectangular tube that will be in the T5 state cuts into the rectangle pipeline section 1 of appropriate length.
(2) stock is prepared two flexible plugs 5 are passed in the upper plenum 14 of rectangle pipeline section 1 and following cavity 15 respectively, and again that the two ends of rectangle pipeline section 1 is airtight fixing with clamp pad 4, this moment, rectangle pipeline section 1 clamped pad 5 and two flexible plugs 4 kept fixing.
(3) last stretch benders are clamped in the clamp pad 4 at rectangle pipeline section 1 two ends respectively on the left and right sides clamping head 33,34 of stretch benders 3, and left and right sides clamping oil cylinder 37,38 moves the two ends that get final product clamp rectangular pipeline section 1 to the center.So far rectangle pipeline section 1 is fixed on the left and right sides clamping head that remains on stretch benders 3.
(4) stretch about stretching oil cylinder 35,36 move leftwards and rightwards respectively, along the axis X direction of rectangle pipeline section 1 rectangle pipeline section 1 is applied drawing stress.The pulling force of configuration stretch benders 3, the drawing stress that makes it to be applied on rectangle pipeline section 1 stock is Rp0.2＞275Mpa, rectangle pipeline section 1 enters the plastic deformation stage at this moment.
(5) crooked stretch benders about big arm 31,32 rearward be rocked to the angle of regulation respectively, along the Y-direction of rectangle pipeline section 1 rectangle pipeline section 1 is applied bending, rectangle pipeline section 1 is curved to the angle of regulation and fits on the stretch bending mould 39.
(6) stretch to continue strengthen the pulling force of stretch benders again, until about 120% of the yield strength that reaches aluminum rectangular tube.
(7) stretching oil cylinder 35,36 unloadings about the unloading return, left and right sides clamping oil cylinder 37,38 unclamps rectangular tube, about stretching oil cylinder 35,36 returns, about big arm 31,32 returns.At this moment, take out the finished product that the good rectangle pipeline section 1 that is shaped namely obtains high-speed railway passenger door pillar or doorframe component 2.
Adopting door pillar or the doorframe component 2 of this explained hereafter is great circle arc rectangular tube part, under the situation that does not change material hardness state (remaining the T5 state), adopt the stretch bending process one-shot forming, 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 guarantee the dimensional stability of door pillar or doorframe component 2, product quality is near 100%, and speed of production is faster more than 3 times than former technology.Through door pillar or the doorframe component 2 of bending forming, material internal stress has obtained elimination, and change has taken place grain orientation, and product strength is significantly improved.
By reference to the accompanying drawings the specific embodiment of the present invention has been carried out exemplary description above, obvious scope of the present invention is not limited thereto, and the various distortion of making 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 of aluminium-alloy pipe, have plural linear portion and one or more bending section, wherein aluminium-alloy pipe is in the T5 state, it is characterized in that: described door pillar or doorframe component are to adopt a stretch-wrap forming technology to make under the situation of the hardness state that does not change this aluminium-alloy pipe.
2. track train door pillar according to claim 1 or doorframe component, it is characterized in that: described aluminium-alloy pipe is that cross-sectional plane is the aluminum rectangular tube of essentially rectangular.
3. track train door pillar according to claim 2 or doorframe component, it is characterized in that: aluminum rectangular tube has a rectangular box, middle partition and upper side edge, and middle partition is divided into a upper plenum and a following cavity with the middle part of rectangular tube.
4. track train door pillar according to claim 1 or doorframe component, it is characterized in that: described aluminium-alloy pipe is the silicomanganese aluminium-alloy pipe.
5. method that adopts stretch bending process to make track train door pillar or doorframe component, this door pillar or doorframe component are made of aluminium-alloy pipe, have plural linear portion and one or more than one bending section, it is characterized in that keeping the hardness state of aluminium-alloy pipe is the T5 state, carries out stretch bending to this aluminium-alloy pipe under the hardness state status of immovable aluminium-alloy pipe.
6. method that adopts stretch bending process to make track train door pillar or doorframe component, this door pillar or doorframe component are made of aluminium-alloy pipe, have plural linear portion and one or more than one bending section, it is characterized in that described method may further comprise the steps:
(1) gets the raw materials ready according to the entire length of door pillar or doorframe component, prepare the aluminum alloy pipeline section of appropriate length as stock;
(2) stock is prepared flexible plug is inserted in the cavity of described aluminum alloy pipeline section, and adopts clamp pad that aluminium-alloy pipe is fixing together with flexible plug;
(3) the described stock that stretch benders utilize clamp pad will be fixed on the flexible plug on is clamped on the left and right sides clamping head of stretch benders;
(4) stretch and to utilize stretch benders that described stock is applied the drawing stress of Rp0.2＞275Mpa, make stock enter the plastic deformation stage;
(5) bending utilizes stretch benders that described stock is applied bending, fits in the stretch bending mould until the curved interior surface of stock;
(6) stretch to continue strengthen the pulling force of stretch benders again, until reach the drawing stress that is applied on the stock reach the aluminum rectangular tube section yield strength about 120%;
(7) the stretching oil cylinder of unloading return stretch benders, clamping oil cylinder, about big arm all unload return, take out member and namely obtain described track train door pillar or doorframe component.
7. according to the method for claim 5 or 6 described manufacturing track train door pillars or doorframe, it is characterized in that: described aluminium-alloy pipe is roughly rectangular aluminum rectangular tube of cross-sectional plane, it has a rectangular box, middle partition and upper side edge, and the described middle middle part that cuts off rectangular tube is divided into upper plenum and following cavity.
8. according to the method for claim 5 or 6 described manufacturing track train door pillars or doorframe, it is characterized in that: described aluminium-alloy pipe is the silicomanganese aluminium-alloy pipe.
CN201310199510.1A 2013-05-27 2013-05-27 A kind of adopt stretch bending process to manufacture track train component and manufacture method Expired - Fee Related CN103264707B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2011111838A (en) * 2009-11-30 2011-06-09 Sanwa Shutter Corp Window structure of door panel
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

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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
JP2011111838A (en) * 2009-11-30 2011-06-09 Sanwa Shutter Corp Window structure of door panel
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

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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