CN108568467A - A kind of stretch bending device of tyre of limitation rail vehicle top bow lateral bending - Google Patents
A kind of stretch bending device of tyre of limitation rail vehicle top bow lateral bending Download PDFInfo
- Publication number
- CN108568467A CN108568467A CN201710151004.3A CN201710151004A CN108568467A CN 108568467 A CN108568467 A CN 108568467A CN 201710151004 A CN201710151004 A CN 201710151004A CN 108568467 A CN108568467 A CN 108568467A
- Authority
- CN
- China
- Prior art keywords
- stretch bending
- piston rod
- stretch
- tyre
- fixed plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/22—Auxiliary equipment, e.g. positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D47/00—Making rigid structural elements or units, e.g. honeycomb structures
- B21D47/01—Making rigid structural elements or units, e.g. honeycomb structures beams or pillars
Abstract
The present invention provides a kind of stretch bending device of tyre, for limiting rail vehicle top bow lateral bending, the stretch bending device of tyre includes stretch bending tire main body, baffle, the fixed plate being connected in the stretch bending tire main body, the piston rod being retractably installed in fixed plate, the baffle is connect with piston rod, electric power is connected in fixed plate makes piston rod run, proximate matter is placed in stretch bending tire main body, passes through the gap of piston rod regulating fender and proximate matter.Compared with prior art, what is provided in the present invention can limit the stretch bending device of tyre of rail vehicle top bow lateral bending, effectively control the edgewise bend occurred in rail vehicle top bow class component stretch wrap forming and section warping defects, it eliminates with traditional insurmountable defect problem of bending, the forming accuracy of such component greatly improved, the production cycle is shortened, production cost is reduced.
Description
Technical field
The present invention relates to a kind of stretch bending device of tyre that can limit rail vehicle top bow lateral bending, are mainly used for railcar
The stretch wrap forming process of carline class component, belongs to bending forming technical field.
Background technology
Rail traffic is mostly important one of the transportation trade in China.Frame member size on rail vehicle is general
It is bigger, the bending forming of proximate matter is mainly carried out using stretch bending technology.Stretch wrap forming is a kind of Cold-forming process, and workpiece is curved
It is applied in tangential pulling force while bent, makes component shaping under moment of flexure and the collective effect of pulling force.Workpiece interface when stretch wrap forming
Interior stress becomes based on tensile stress, and therefore, the workpiece rebound of stretch wrap forming is small, part patch mould is good, forming accuracy is high, surface
It is high-quality.
The blank side view of the very useful camber beam of rail vehicle is as shown in Figure 1, its main body is exactly a L-shaped stainless steel
Proximate matter is made of a stile and a string side, and the size of stile is b, and the size on string side is h, and the thickness of proximate matter is t, is being drawn
Before the reason of crook, the blank of rail vehicle top bow shown in FIG. 1 is pressed along the profile structure of its cross section stretched vertically
According to design requirement, need stretch bending at camber beam planform shown in Fig. 2, during stretch bending, cross section as shown in Figure 1 is kept
It is constant, the shape at three segmental arcs by stretch bending is needed, the radius of big segmental arc is R, and the radius of two small segmental arcs is r, camber beam
Overall length be L, be highly H.
Traditional bending structure is too simple, and mould type face is also similar with the structure of stretch bending part, i.e., arc broad in the middle
Section radius of curvature is big, and segmental arc radius of curvature small in ends is small.Traditional stretch bending tire overhead gage gap be it is fixed, in theory,
During stretch bending, the gap of baffle and proximate matter is the smaller the better, but in practical situations, when baffle and proximate matter contact, i.e., between
When gap is 0mm, lead to the increase of frictional force during stretch bending, finally so that proximate matter fails to paste mould completely, leads to camber beam precision pole
Difference, so having gap between baffle and proximate matter in practice, although camber beam is bonded with stretch bending tire preferably, by camber beam in this way
Will appear the defect that edgewise bend and section distort after being taken out in stretch bending tire, as shown in Figures 3 and 4, wherein solid line indicate without
The camber beam of defect, dotted line indicates the camber beam for edgewise bend and section warping defects occur, this is because having between baffle and proximate matter
Gap does not give proximate matter side to apply pressure, and rebound is larger, leads to the defect for finally generating lateral bending.
For the drawbacks described above occurred when solving with traditional stretch bending tire forming, we have invented one kind can limiting camber beam side
Curved stretch bending device of tyre.One device that can automatically adjust baffle and proximate matter gap is set on traditional stretch bending tire, in prestretching
And cladding draw stage, it is 0.8t~1.1t to make gap between baffle and proximate matter, before mending the drawing stage, baffle constantly to
Proximate matter moves, and it is 0mm to make baffle and proximate matter gap, then carries out benefit drawing, and after mending drawing, baffle starts proximate matter to apply side
Surface pressure makes camber beam reach yield limit, and camber beam is taken out in finally unloading, can decreasing rebound, eliminating final camber beam, side occur curved
The defect of bent and section distortion, improves the product quality and forming accuracy of drip molding.
Invention content
In view of the foregoing drawbacks, present invention solves the technical problem that being, control carline component goes out during stretch bending
The defect of existing edgewise bend.
The present invention provides a kind of stretch bending device of tyre, for limiting rail vehicle top bow lateral bending, the stretch bending tire dress
It sets including stretch bending tire main body, baffle, the fixed plate being connected in the stretch bending tire main body, be retractably installed in fixed plate
Piston rod, the baffle are connect with piston rod, and electric power is connected in fixed plate makes piston rod run, and proximate matter is placed on stretch bending tire master
On body, pass through the gap of piston rod regulating fender and proximate matter.
Preferably, the fixed plate is fastened on by bolted connection in stretch bending tire main body.
Preferably, the piston rod includes telescopic rod and fixed link.
Preferably, it is equipped with hole in the telescopic rod and fixed link.
Preferably, the baffle, piston rod and fixed plate are connected by a fastener, the fastener and the telescopic rod
And the hole in fixed link matches.
Preferably, the fastener is bolt.
Compared with prior art, stretch bending device of tyre of the present invention during stretch bending by piston rod come free control baffle with
The gap of proximate matter, before mending the drawing stage, baffle is constantly moved to proximate matter, and it is 0mm to make baffle and proximate matter gap, is then mended
It draws, after mending drawing, baffle starts proximate matter to apply side pressure, and camber beam is made to reach yield limit, and finally unloading is taken out curved
Beam, can decreasing rebound, eliminate final camber beam occur edgewise bend and section distortion defect, improve drip molding product quality and
Forming accuracy.
What is provided in the present invention can limit the stretch bending device of tyre of rail vehicle top bow lateral bending, effectively control track
The edgewise bend and section warping defects occurred in vehicle roof camber beam class component stretch wrap forming, eliminates with traditional stretch bending tire
Have insurmountable defect problem, the forming accuracy of such component greatly improved, shorten the production cycle, reduce and be produced into
This；This structure can also promote the use of in the bendings of other components simultaneously, be of great practical significance and
Use value.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the side view of camber beam blank；
The front view of camber beam when Fig. 2 is forming；
Whether there is or not the vertical views of edgewise bend Defect Comparison for camber beam when Fig. 3 is forming；
Fig. 4 is the schematic cross-sectional view for occurring at A in Fig. 3 section distortion；
Fig. 5 is a kind of stretch bending device of tyre schematic diagram of limitation rail vehicle top bow lateral bending of the present invention；
Fig. 6 is B-B partial schematic cross-sectionals in Fig. 5；
Fig. 7 is the front view of piston rod；
Fig. 8 is the side view of piston rod.
In Fig. 1-8：
1, camber beam section 2, stretch bending tire main body 3, proximate matter 4, baffle 5, bolt 6, piston rod 61, telescopic rod 62, solid
Fixed pole 7, fixed plate
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As viewed in figures 5-8, the present embodiment provides a kind of stretch bending device of tyre that can limit rail vehicle top bow lateral bending,
Provided with can with the mechanism of adjust automatically flapper gap, form include stretch bending tire main body (2), baffle (4), piston rod (6), consolidate
Fixed board (7) etc., fixed plate (7) are fastened on using bolted mode in stretch bending tire main body (2).It is flexible in piston rod (6)
There are hole, size and the bolt (5) in hole just to coordinate in bar (61) and fixed link (62).
The piston rod (6) is mounted in fixed plate (7), extending and shortening.Being connected to electric power in fixed plate (7) makes
Piston rod (6) is run.
The baffle (4), piston rod (6), fixed plate (7) are linked together by bolt (5), and baffle (4) can be with
The elongation for piston rod (6) is shortened and squeezes and unclamp proximate matter (3).
According to the profile and sectional dimension data of carline component, stretch bending tire main body and mould type face are designed, by proximate matter
(3) after being placed in stretch bending tire main body (2), by the gap of piston rod (6) regulating fender (4) and proximate matter (3), make baffle and type
Gap between material is 0.8t~1.1t, then proceeds by stretch bending process, in prestretching and cladding draw stage, need not be adjusted
It that is, after cladding stretches, mends before drawing after proximate matter (3) patch mould completely, begins through piston rod (6) tune in baffle (4) gap
Whole baffle (4) gap makes it with proximate matter (3) gap be 0mm, then carries out benefit drawing, when mend draw after start extrudate
(3), make proximate matter (3) by side pressure, so that camber beam is reached yield limit, finally start discharging.
A kind of stretch bending device of tyre that can limit rail vehicle top bow lateral bending is provided in the present invention, effectively controls rail
The edgewise bend and section warping defects occurred in road vehicle roof camber beam class component stretch wrap forming, eliminates with traditional stretch bending
The insurmountable defect problem of mould, greatly improved the forming accuracy of such component, shortens the production cycle, reduce production
Cost；This structure can also promote the use of in the bendings of other components simultaneously, be of great practical significance
And use value.
Claims (6)
1. a kind of stretch bending device of tyre, for limiting rail vehicle top bow lateral bending, which is characterized in that the stretch bending device of tyre packet
It includes：
Stretch bending tire main body；
Baffle；
Fixed plate is connected in the stretch bending tire main body；
Piston rod is retractably installed in fixed plate；
The baffle is connect with piston rod, and electric power is connected in fixed plate makes piston rod run, and proximate matter is placed on stretch bending tire main body
On, pass through the gap of piston rod regulating fender and proximate matter.
2. stretch bending device of tyre according to claim 1, it is characterised in that：The fixed plate is tight by bolted connection
Gu in stretch bending tire main body.
3. stretch bending device of tyre according to claim 1, it is characterised in that：The piston rod includes telescopic rod and fixed link.
4. stretch bending device of tyre according to claim 3, it is characterised in that：Hole is equipped in the telescopic rod and fixed link.
5. stretch bending device of tyre according to claim 4, it is characterised in that：The baffle, piston rod and fixed plate pass through one
Fastener connects, and the fastener is matched with the hole in the telescopic rod and fixed link.
6. stretch bending device of tyre according to claim 5, it is characterised in that：The fastener is bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151004.3A CN108568467B (en) | 2017-03-14 | 2017-03-14 | Stretch bending tire device for limiting side bending of curved beam of railway vehicle roof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151004.3A CN108568467B (en) | 2017-03-14 | 2017-03-14 | Stretch bending tire device for limiting side bending of curved beam of railway vehicle roof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108568467A true CN108568467A (en) | 2018-09-25 |
| CN108568467B CN108568467B (en) | 2021-01-26 |
Family
ID=63578506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710151004.3A Active CN108568467B (en) | 2017-03-14 | 2017-03-14 | Stretch bending tire device for limiting side bending of curved beam of railway vehicle roof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108568467B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319170A (en) * | 2021-04-23 | 2021-08-31 | 中车长春轨道客车股份有限公司 | Stretch bending die for railway vehicle roof camber beam |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129031A (en) * | 1997-10-29 | 1999-05-18 | Mitsubishi Heavy Ind Ltd | Press forming die |
| CN101837408A (en) * | 2010-04-21 | 2010-09-22 | 吉林大学 | Integral multi-molded surface bending clamping fixture |
| CN102218461A (en) * | 2011-03-02 | 2011-10-19 | 北京北方车辆集团有限公司 | Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret |
| CN102240737A (en) * | 2011-05-17 | 2011-11-16 | 吉林大学 | Bending die for carlines of railway vehicles with back limitation mechanisms |
| CN102350453A (en) * | 2011-06-24 | 2012-02-15 | 宁波福耀汽车零部件有限公司 | Variable-radian forming equipment for double-framework type products and method thereof |
| CN102641925A (en) * | 2012-05-07 | 2012-08-22 | 吉林省瑞恒机械有限公司 | Modularization stretch bending clamping fixture for railway vehicle carline |
| CN204770000U (en) * | 2015-06-29 | 2015-11-18 | 凌云工业股份有限公司 | Double arc face bumper side pushes away plastic mechanism |
-
2017
- 2017-03-14 CN CN201710151004.3A patent/CN108568467B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11129031A (en) * | 1997-10-29 | 1999-05-18 | Mitsubishi Heavy Ind Ltd | Press forming die |
| CN101837408A (en) * | 2010-04-21 | 2010-09-22 | 吉林大学 | Integral multi-molded surface bending clamping fixture |
| CN102218461A (en) * | 2011-03-02 | 2011-10-19 | 北京北方车辆集团有限公司 | Stretch-bending formation method of lower enclosing rib of rectangular hollow section gun turret |
| CN102240737A (en) * | 2011-05-17 | 2011-11-16 | 吉林大学 | Bending die for carlines of railway vehicles with back limitation mechanisms |
| CN102350453A (en) * | 2011-06-24 | 2012-02-15 | 宁波福耀汽车零部件有限公司 | Variable-radian forming equipment for double-framework type products and method thereof |
| CN102641925A (en) * | 2012-05-07 | 2012-08-22 | 吉林省瑞恒机械有限公司 | Modularization stretch bending clamping fixture for railway vehicle carline |
| CN204770000U (en) * | 2015-06-29 | 2015-11-18 | 凌云工业股份有限公司 | Double arc face bumper side pushes away plastic mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 梁继业等: "L 型截面铝型材拉弯成形截面畸变缺陷控制研究", 《锻压技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319170A (en) * | 2021-04-23 | 2021-08-31 | 中车长春轨道客车股份有限公司 | Stretch bending die for railway vehicle roof camber beam |
| CN113319170B (en) * | 2021-04-23 | 2022-10-18 | 中车长春轨道客车股份有限公司 | Stretch bending die for railway vehicle roof camber beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108568467B (en) | 2021-01-26 |
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