CN104226819A - Rail wagon sleeper beam lower cover plate molding device and method thereof - Google Patents
Rail wagon sleeper beam lower cover plate molding device and method thereof Download PDFInfo
- Publication number
- CN104226819A CN104226819A CN201410481992.4A CN201410481992A CN104226819A CN 104226819 A CN104226819 A CN 104226819A CN 201410481992 A CN201410481992 A CN 201410481992A CN 104226819 A CN104226819 A CN 104226819A
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- plane
- sleeper beam
- lower cover
- railway freight
- beam lower
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- Bending Of Plates, Rods, And Pipes (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a rail wagon sleeper beam lower cover plate molding device and a method thereof. The device comprises an upper die base, upper die molding inserts arranged on two side faces of the upper die base, a lower die base provided with an installation slot in the middle, and lower die molding inserts arranged on two side faces of the installation slot of the lower die base. The method comprises the following steps of putting an elastic body in the installation slot of the lower die base, placing a pressure plate on the elastic body, and placing a workblank of a rail wagon sleeper beam lower cover plate on a work face of the pressure plate; adjusting the shut height of a press machine to apply pressure on the workblank according the difference of material mechanical performance of the workblank; enabling work faces of the upper die molding inserts and the lower die molding inserts to respectively act on the workblank of the rail wagon sleeper beam lower cover plate, so that two sides of the workblank of the rail wagon sleeper beam lower cover plate can be bent and molded. According to the molding device and the method, the problem of the change of molding springback angles caused by the difference of the material mechanical performance is effectively solved, the flatness of non-molding parts in the middle of the rail wagon sleeper beam lower cover plate is ensured, and the production efficiency of molding is improved.
Description
Technical field
The present invention relates to the field shaping technique of railway freight-car sleeper beam lower cover, refer to a kind of railway freight-car sleeper beam lower cover shaped device and method thereof particularly.
Background technology
China is when railway freight-car (hereinafter referred to as lorry) product design, and in order to strengthen the intensity of lorry, be all designed with sleeper beam lower cover at underframe sleeper beam position, welded and installed is below railway freight-car central sill and sleeper beam, and its lower plane is provided with body center plate; Lorry weight is delivered on bogie by sleeper beam lower cover, body center plate; Its shape is bool.
It is shaping that current sleeper beam lower cover mainly contains following two kinds of methods.
Method one: utilize bender to carry out bending.
Method two: utilize mould to carry out at hydraulic press shaping.
All there is certain shortcoming in above two kinds of methods.Method one: need twice locate bending, at bending fillet there is transition arc in place, and after bending and molding, soffit plane degree does not reach requirement, bending angle and the difference in size opposite sex larger; Method two: utilize mould to carry out on hydraulic press shaping, because the mechanical property of materials there are differences, shaping rear spring back angle is uncontrollable.
Summary of the invention
A technical problem to be solved by this invention is to provide a kind of railway freight-car sleeper beam lower cover shaped device, efficiently shaping for railway freight-car sleeper beam lower cover.
Another technical problem to be solved by this invention is to provide a kind of railway freight-car sleeper beam lower cover forming method, to solve the shaping back plane degree of railway freight-car sleeper beam lower cover, angle resilience quality problems.
For solving above-mentioned first technical problem, the railway freight-car sleeper beam lower cover shaped device designed by the present invention comprises: upper bolster, the upper die forming insert being arranged on upper bolster two sides, centre are provided with the die shoe of mounting groove, are arranged on the lower mold forming insert of die shoe mounting groove two sides; The working face of described upper die forming insert is a plane and the inclined-plane adjacent with this plane, and the plane working face of described upper die forming insert is mutually concordant with the lower plane of upper bolster; The working face of described lower mold forming insert is a plane and the inclined-plane adjacent with this plane, the plane working face of described lower mold forming insert is mutually concordant with the upper plane of die shoe, and the plane working face of lower mold forming insert and the intersection of inclined-plane working face are arc surface; In working order, the inclined-plane working face of described upper die forming insert is parallel just relative with the inclined-plane working face of lower mold forming insert.
In such scheme, the profile angle that the plane working face of described upper die forming insert and the angle of inclined-plane working face equal railway freight-car sleeper beam lower cover deducts 2 ~ 10 °.
In such scheme, described die shoe mounting groove is two step stepped recesses, and described lower mold forming insert is individually fixed on the first step step of groove both sides.
For solving above-mentioned second technical problem, the railway freight-car sleeper beam lower cover forming method designed by the present invention, comprises the following steps:
1) elastomer is placed in die shoe mounting groove, elastomer places one piece of holding pad, then the blank of railway freight-car sleeper beam lower cover is placed on this holding pad working face;
2) according to the difference of blank material mechanical performance, adjustment shut height of press machine, applies pressure to the blank of railway freight-car sleeper beam lower cover;
3) upper and lower die holder relative motion, makes the working face of upper and lower mold forming insert act on the blank of railway freight-car sleeper beam lower cover respectively, can make the blank both sides brake forming of railway freight-car sleeper beam lower cover.
In such scheme, before applying pressure to the blank of railway freight-car sleeper beam lower cover, on holding pad, plane is higher than plane 3 ~ 10mm in lower mold forming insert.
Closer, in such scheme, before applying pressure to the blank of railway freight-car sleeper beam lower cover, on holding pad, plane is higher than plane 4 ~ 5mm in lower mold forming insert.
Beneficial effect of the present invention is:
1, because upper die forming insert of the present invention, lower mold forming insert working face place are all designed with inclined-plane, centering when installing for mould, avoid upper and lower mould and interfere, eliminate die guide structure.
2, in lower mold forming insert, plane and intersection, inclined-plane are set to arc surface, are convenient to railway freight-car sleeper beam lower cover metal flow when shaping; Elastomer has certain pretightning force, and its pretightning force is greater than the power that railway freight-car sleeper beam lower cover mid portion produces in forming process.
3, smooth with the railway freight-car sleeper beam lower cover middle part that the present invention is shaping, efficiently solve because of mechanical property of materials differentia influence angle resilience change.Simplify moulding process simultaneously, improve production efficiency, there is stronger practicality.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of railway freight-car sleeper beam lower cover of the present invention.
Fig. 2 is the structural representation of railway freight-car sleeper beam lower cover shaped device of the present invention state before forming parts.
Fig. 3 is the structural representation of railway freight-car sleeper beam lower cover shaped device of the present invention in forming parts state.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As can be seen from Figure 1, railway freight-car sleeper beam lower cover shape is comparatively complicated, and has two places to be bending, and angle of bend (i.e. profile angle) is θ.
As can be seen from Figure 2, railway freight-car sleeper beam lower cover shaped device of the present invention, comprises upper bolster 1, the upper die forming insert 3 be arranged in pairs on upper bolster 1, centre is provided with the die shoe 2 of mounting groove, is arranged on the lower mold forming insert 4 of die shoe mounting groove two sides.The working face of described upper die forming insert 3 is a plane and the inclined-plane adjacent with this plane, and the plane working face of described upper die forming insert 3 is mutually concordant with the lower plane of upper bolster 1; The working face of described lower mold forming insert 4 is a plane and the inclined-plane adjacent with this plane, the plane working face of described lower mold forming insert 4 is mutually concordant with the upper plane of die shoe 2, and the plane working face of lower mold forming insert 4 and the intersection of inclined-plane working face are arc surface; In working order, the inclined-plane working face of described upper die forming insert 3 is parallel just relative with the inclined-plane working face of lower mold forming insert.The mounting groove of described die shoe 2 both can be the two step stepped recesses of Fig. 2, and two lower mold forming inserts 4 are individually fixed on the first step step of groove both sides; Can for not arranging the groove of intermediate step (i.e. first step step) yet, the baseplane of lower mold forming insert 4 is mutually concordant with bottom portion of groove, and the upper plane of lower mold forming insert 4 is mutually concordant with the upper plane of die shoe 2.Preferably, the plane working face of described upper die forming insert 3 and the angle of inclined-plane working face equal minimum profile angle θ and deduct 2 ° and can increase shaping scope like this.
As can be seen from Fig. 2, Fig. 3, when utilizing this shaped device to carry out shaping to railway freight-car sleeper beam lower cover on forcing press, first elastomer 6 is installed in the mounting groove of die shoe 2, holding pad 5 is installed on above elastomer 6, be positioned at lower mold forming insert 4 middle, left and right.Elastomer 6 has certain pretightning force, and its pretightning force is greater than the power that railway freight-car sleeper beam lower cover mid portion produces in forming process.By location, railway freight-car sleeper beam lower cover blank 7 is positioned over plane on holding pad 5; Before applying pressure to the blank 7 of railway freight-car sleeper beam lower cover, the upper plane of holding pad 5 is higher than the upper plane 3 ~ 10mm of lower mold forming insert 4.Preferably, the upper plane of holding pad 5 is higher than the upper plane 4 ~ 5mm of lower mold forming insert 4.Shut height of press machine is regulated according to the mechanical property of materials, namely then shut height of press machine is increased when Tensile strength is large, otherwise, then reduce shut height of press machine, pressure is applied to railway freight-car sleeper beam lower cover blank 7, upper bolster 1 and die shoe 2 relative motion, make the working face of upper and lower mold forming insert act on railway freight-car sleeper beam lower cover blank 7 respectively, can make the both sides brake forming of railway freight-car sleeper beam lower cover blank 7.
The present invention effectively can solve the shaping process difficulties of railway freight-car sleeper beam lower cover, by adjustment shut height of press machine, changes railway freight-car sleeper beam lower cover both sides profile angle, eliminates because mechanical property of materials change produces different spring back angle; Plane and intersection, inclined-plane circular arc in upper die forming insert 3 lower plane and lower mold forming insert 4 is utilized to carry out shaping to railway freight-car sleeper beam lower cover both sides; Because railway freight-car sleeper beam lower cover carries out shaping on pressure, without the need to carrying out pressurize, production efficiency significantly improves.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a railway freight-car sleeper beam lower cover shaped device, is characterized in that:
Described device comprises:
Upper bolster (1), the upper die forming insert 3 being arranged on upper bolster (1) two sides, centre are provided with the die shoe (2) of mounting groove, are arranged on the lower mold forming insert (4) of the mounting groove two sides of die shoe (2); The working face of described upper die forming insert (3) is a plane and the inclined-plane adjacent with this plane, and the plane working face of described upper die forming insert (3) is mutually concordant with the lower plane of upper bolster (1); The working face of described lower mold forming insert (4) is a plane and the inclined-plane adjacent with this plane, the plane working face of described lower mold forming insert (4) is mutually concordant with the upper plane of die shoe (2), and the plane working face of lower mold forming insert (4) and the intersection of inclined-plane working face are arc surface; In working order, the inclined-plane working face of described upper die forming insert (3) is parallel just relative with the inclined-plane working face of lower mold forming insert (4).
2. railway freight-car sleeper beam lower cover shaped device according to claim 1, is characterized in that: the profile angle that the described plane working face of upper die forming insert (3) and the angle of inclined-plane working face equal railway freight-car sleeper beam lower cover deducts 2 ~ 10 °.
3. railway freight-car sleeper beam lower cover shaped device according to claim 1 and 2, it is characterized in that: the mounting groove of described die shoe (2) is two step stepped recesses, described lower mold forming insert (4) is individually fixed on the first step step of groove both sides.
4. a railway freight-car sleeper beam lower cover forming method, is characterized in that:
1) elastomer (6) is placed in die shoe (2) mounting groove, the upper placement one piece of holding pad (5) of elastomer (6), then the blank (7) of railway freight-car sleeper beam lower cover is placed on the working face of this holding pad (5);
2) according to the difference of blank material mechanical performance, adjustment shut height of press machine, applies pressure to the blank (7) of railway freight-car sleeper beam lower cover;
3) upper and lower die holder (1,2) relative motion, make the working face of upper and lower mold forming insert (3,4) act on the blank (7) of railway freight-car sleeper beam lower cover respectively, blank (7) the both sides brake forming of railway freight-car sleeper beam lower cover can be made.
5. railway freight-car sleeper beam lower cover forming method according to claim 4, it is characterized in that: before applying pressure to the blank (7) of railway freight-car sleeper beam lower cover, the upper plane of holding pad (5) is higher than the upper plane 3 ~ 10mm of lower mold forming insert (4).
6. railway freight-car sleeper beam lower cover forming method according to claim 5, it is characterized in that: before applying pressure to the blank (7) of railway freight-car sleeper beam lower cover, the upper plane of holding pad (5) is higher than the upper plane 4 ~ 5mm of lower mold forming insert (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481992.4A CN104226819B (en) | 2014-09-19 | 2014-09-19 | Railway freight-car sleeper beam lower cover shaped device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410481992.4A CN104226819B (en) | 2014-09-19 | 2014-09-19 | Railway freight-car sleeper beam lower cover shaped device and method thereof |
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| Publication Number | Publication Date |
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| CN104226819A true CN104226819A (en) | 2014-12-24 |
| CN104226819B CN104226819B (en) | 2016-08-24 |
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| CN201410481992.4A Active CN104226819B (en) | 2014-09-19 | 2014-09-19 | Railway freight-car sleeper beam lower cover shaped device and method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999632A (en) * | 2017-12-29 | 2018-05-08 | 重庆鹏林钢结构有限责任公司 | Press machine |
| CN109967629A (en) * | 2019-04-25 | 2019-07-05 | 肇庆胜尚知识产权服务有限公司 | A kind of split type plate molding die |
| CN110102613A (en) * | 2019-04-23 | 2019-08-09 | 中车石家庄车辆有限公司 | End carriage bending mould and end carriage manufacture craft |
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| JP2002102934A (en) * | 2000-09-28 | 2002-04-09 | Waitekku:Kk | Bending apparatus of long member |
| US20040011115A1 (en) * | 2000-07-13 | 2004-01-22 | Komatsu, Ltd. | Method of bending a long length of a member and bending apparatus for use in such method |
| CN101585066A (en) * | 2009-06-23 | 2009-11-25 | 重庆大学 | A kind of sectional bending mould for machining heavy forging |
| CN202400101U (en) * | 2012-01-13 | 2012-08-29 | 齐齐哈尔轨道交通装备有限责任公司 | Sleeper beam covering plate and rail wagon |
| CN102716948A (en) * | 2012-07-10 | 2012-10-10 | 南车长江车辆有限公司 | U-shaped section steel bending and molding device and molding method utilizing same |
| CN204052632U (en) * | 2014-09-19 | 2014-12-31 | 南车长江车辆有限公司 | The shaped device of railway freight-car sleeper beam lower cover |
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2014
- 2014-09-19 CN CN201410481992.4A patent/CN104226819B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040011115A1 (en) * | 2000-07-13 | 2004-01-22 | Komatsu, Ltd. | Method of bending a long length of a member and bending apparatus for use in such method |
| JP2002102934A (en) * | 2000-09-28 | 2002-04-09 | Waitekku:Kk | Bending apparatus of long member |
| CN101585066A (en) * | 2009-06-23 | 2009-11-25 | 重庆大学 | A kind of sectional bending mould for machining heavy forging |
| CN202400101U (en) * | 2012-01-13 | 2012-08-29 | 齐齐哈尔轨道交通装备有限责任公司 | Sleeper beam covering plate and rail wagon |
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| CN204052632U (en) * | 2014-09-19 | 2014-12-31 | 南车长江车辆有限公司 | The shaped device of railway freight-car sleeper beam lower cover |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999632A (en) * | 2017-12-29 | 2018-05-08 | 重庆鹏林钢结构有限责任公司 | Press machine |
| CN107999632B (en) * | 2017-12-29 | 2023-08-25 | 重庆鹏林钢结构有限责任公司 | punching machine |
| CN110102613A (en) * | 2019-04-23 | 2019-08-09 | 中车石家庄车辆有限公司 | End carriage bending mould and end carriage manufacture craft |
| CN109967629A (en) * | 2019-04-25 | 2019-07-05 | 肇庆胜尚知识产权服务有限公司 | A kind of split type plate molding die |
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| Publication number | Publication date |
|---|---|
| CN104226819B (en) | 2016-08-24 |
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Address after: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Applicant after: CRRC YANGTZE CO., LTD. Address before: 430212 Jiangxia Economic Development Zone, Wuhan, the new bridge area of the city of Hubei Applicant before: China South Locomotive & Rolling Stock Changjiang Vehicle Company |
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