CN108015216A - A kind of forging molding process of railcar bearing block - Google Patents
A kind of forging molding process of railcar bearing block Download PDFInfo
- Publication number
- CN108015216A CN108015216A CN201711320943.2A CN201711320943A CN108015216A CN 108015216 A CN108015216 A CN 108015216A CN 201711320943 A CN201711320943 A CN 201711320943A CN 108015216 A CN108015216 A CN 108015216A
- Authority
- CN
- China
- Prior art keywords
- forging
- base
- bearing block
- finish
- molding process
- 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
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
Abstract
The present invention proposes a kind of forging molding process for the railcar bearing block for belonging to forging field, comprises the following steps：A, blanking：Raw material are chosen according to product demand；B, base：First fire heats raw material, descale, and base is moulded with base on 1 ton of hammer；C, pre-bending：Second fire is by blank heating, prebuckling in the preparation edger of two station moulds, descale on 1600 tons of frictional force machines；D, it is molded：The finish forging in the finish impression of two station moulds；E, trimming：By the cutting burrs on forging after finish forging on bead cutter.Solve Conventional processing methods and use open die forging base, 5 tons of Die Forging Hammers shapings are not accurate there are base, there are Fold during die forging, there are corner underfill phenomenon after die forging, greatly reduce forging scrappage, saved production quality cost.
Description
Technical field
The present invention relates to technical field of forging, more particularly to a kind of forging molding process of railcar bearing block.
Background technology
Usually require to use a kind of bearing block in railcar, which is one on bogie important support member
Part, is mainly used to spring bearing, and product design of the present invention is small and not on the same axis for two, and centre is U-shaped big foot shape,
Metal flow is difficult during forging molding, it is difficult to is molded.
Conventional processing methods use the method base of open die forging, and die-forging forming is carried out on 5 tons of die hammers, often because system
Base is not accurate, causes forging part fold cracks occur, and product rejection is caused in forging corner because not rushing completely and existing defects after die forging
The problem of rate remains high.In addition die forging processing is carried out using 5 tons of hammer die forgings, because mould is subject to impact force big, mould easily occurs
Damage, die life is low, and manufacture cost is excessive.
The content of the invention
In view of defects in the prior art, of the invention provides a kind of forging molding process of subway bearing block, this
Technical solution is used by invention：
A kind of forging molding process of subway bearing block, specific embodiment are as follows：
A, blanking：Raw material are chosen according to product demand；
B, base：First fire heats raw material, descale, and base is moulded with base on 1 ton of hammer.
C, pre-bending：Second fire is pre- in the preparation edger of two station moulds on 1600 tons of frictional force machines by blank heating
Bending, descale；
D, it is molded：The finish forging in the finish impression of two station moulds on 1600 tons of frictional force machines；
E, trimming：With edger by the cutting burrs on forging after finish forging on forcing press.
The invention has the advantages that：
1st, base is carried out according to mold, eliminate base precisely caused by die forging the defects of folding generation.
2nd, prebuckling station is added during die forging, alleviates cutting stock weight, eliminates the discontented phenomenon of die forging back angle punching.
3rd, forging equipment is changed to 1600 tons of friction presses by 5 tons of die hammers, reduces equipment tonnage, so as to reduce mould
Has the impact force being subject to, die life extends, so as to reduce cost.
Below with reference to accompanying drawings, the present invention is described in further detail.
Brief description of the drawings
The attached drawing for forming the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its explanation is used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is preferred embodiment of the present invention base molding base schematic diagram；
Fig. 2 is the base mould bottom view of the preferred embodiment of the present invention；
Fig. 3 is the pre-bending schematic diagram of the preferred embodiment of the present invention；
Fig. 4 is two station mould finish impression schematic diagrames of the preferred embodiment of the present invention；
Fig. 5 is the product side view of the preferred embodiment of the present invention；
Fig. 6 is the product front view of the preferred embodiment of the present invention；
Fig. 7 is the process flow chart of the preferred embodiment of the present invention.
In figure, 1, base mould；2nd, two station mould；21st, preparation edger；22nd, finish impression；3rd, blank；4th, forging.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Product design of the present invention is small and not on the same axis for two, and centre is U-shaped big foot shape, forging molding process
Middle metal flow is difficult, it is difficult to is molded.The present invention provides a kind of forging molding process of subway bearing block, referring to Fig. 7, including
Following steps：
A, blanking：Raw material are chosen according to product demand.
It is an important branch on bogie since the bearing block manufactured by present invention process is generally used on railcar
Original paper is supportted, for supporting and fixing bearing.Because the size of such product is related with vehicle model, 4 shape of forging is substantially similar,
But specific size has a little change, therefore blank size determines blank size specification according to specific vehicle and forging design drawing.Root
Appropriate specifications of raw materials and weight are chosen according to forging design drawing, accurate discharge is carried out using sawing machine, prevents that material weight is overweight
Or kick the beam, actual cutting stock weight deviation is preferably controlled within the 1% of theoretical cutting stock weight.Consider bearing block and bogie for welding
Connection, the good 16MnDR materials of the product raw material preferred weld performance
B, base：First fire heats raw material, descale, and base is moulded with base on 1 ton of hammer.
Referring to Fig. 1, Fig. 1 is the first fiery base schematic diagram, and figure middle and lower part is base mould 1, and top is by made of 1 ton of hammer
The blank 3 of small at both ends and big in the middle shape, i.e., big tripe shape blank 3.Fig. 2 is the top view of base mould 1.
C, pre-bending：Second fire heats blank 3, the preparation edger 21 of two station moulds 2 on 1600 tons of frictional force machines
Middle prebuckling, descale.
Referring to Fig. 3, Fig. 3 is 21 schematic diagram of preparation edger of two station moulds 2, makes blank top curved by upper lower die
Song, formation two is small and has certain radian bending, the forging blank of shape broad in the middle.
D, it is molded：The finish forging in the finish impression 22 of two station moulds 2, cuts overlap.
Referring to Fig. 4, Fig. 4 is 22 schematic diagram of finish impression of two station moulds 2, and forging is put into finish impression 22 1600
The lower finish forging of ton frictional force machine effect obtains forging 4, and wherein Fig. 6 is the front view of forging 4, and Fig. 5 is the side view of forging 4.
E, trimming：With edger by the cutting burrs on forging after finish forging 4 on forcing press.
Since finish-forging cavity 22 is that the filling of finish-forging cavity 22 is discontented caused by preventing actual blank size deviation, so finish-forging
Be equipped with flash gutters in type groove, after finish-forging on forcing press with edger by 4 cutting burrs of forging.
Using this two station moulds, 2 forging die, first prefabricated blank brake forming, then into 22 finish forging of finish impression, eliminate
The phenomenon that die forging back angle is not fully filled.And the mode heated twice is employed, the process of pre-bending is rubbed with 1600 tons
Power machine is completed, and without being molded using conventional 5 tons of Die Forging Hammers, is avoided die forging when being molded using 5 tons of Die Forging Hammers and is deposited
There are the phenomenon of corner underfill after the phenomenon of folding and die forging, product rejection is caused.The system of other 5 tons of Die Forging Hammers
Cause it is excessive, being capable of effective control cost using 1600 tons of frictional force machines.
Preferably, the pattern draft of finish-forging die cavity 22 is 3 °.Set pattern draft enable draft when mould smoothly
Extract.
Preferably, raw material are heated to 1200 DEG C by the first fire.
Preferably, blank 3 is heated to 1200 DEG C by the second fire.
Preferably, because of the product usually with bogie frame to be welded to connect, the 16MnDR of material selection good welding performance.
Preferably, raw material use sawing machine sawing blanking, and inspection of weighing is carried out to it, and blanking actual weight should control
Within the 1% of theoretical cutting stock weight.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of forging molding process of railcar bearing block, it is characterised in that comprise the following steps：
A, blanking：Raw material are chosen according to product demand；
B, base：First fire heats raw material, descale, and base mould is used on 1 ton of hammer（1）Base；
C, pre-bending：Second is fiery by blank（3）Heating, the two station moulds on 1600 tons of frictional force machines（2）Preparation edger
（21）Middle prebuckling, descale；
D, it is molded：In two station moulds（2）Finish impression（22）Middle finish forging；
E, trimming：By forging after finish forging on bead cutter（4）On cutting burrs.
A kind of 2. forging molding process of railcar bearing block according to claim 1, it is characterised in that finish-forging die cavity
（22）Pattern draft be 3 °.
3. the forging molding process of a kind of railcar bearing block according to claim 1, it is characterised in that the first fire will
Raw material are heated to 1200 DEG C.
4. the forging molding process of a kind of railcar bearing block according to claim 1, it is characterised in that the second fire will
Blank（3）It is heated to 1200 DEG C.
5. the forging molding process of a kind of subway bearing block according to claim 1, it is characterised in that raw material are preferred
16MnDR。
A kind of 6. forging molding process of subway bearing block according to claim 1, it is characterised in that：Blanking preferably uses
Sawing machine sawing, actual blank size should be controlled within 1% with theoretical blank size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320943.2A CN108015216B (en) | 2017-12-12 | 2017-12-12 | A kind of forging molding process of railcar bearing block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711320943.2A CN108015216B (en) | 2017-12-12 | 2017-12-12 | A kind of forging molding process of railcar bearing block |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108015216A true CN108015216A (en) | 2018-05-11 |
| CN108015216B CN108015216B (en) | 2019-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711320943.2A Active CN108015216B (en) | 2017-12-12 | 2017-12-12 | A kind of forging molding process of railcar bearing block |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570717A (en) * | 2020-04-08 | 2020-08-25 | 上海兴道锻造有限公司 | Forging process of scraper chain |
| CN113020534A (en) * | 2021-02-25 | 2021-06-25 | 株洲中车天力锻业有限公司 | Forging method of subway bearing seat |
| CN113059102A (en) * | 2021-03-15 | 2021-07-02 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Multi-station forging method and device for guide bar hanger base for warp knitting machine |
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|---|---|---|---|---|
| JPS53149154A (en) * | 1977-06-02 | 1978-12-26 | Shiyouichi Mitsukawa | Production of stamped wheel track having two headed rail portion being almost symmetrical to both ends of wheel track |
| EP1352695A1 (en) * | 2000-11-22 | 2003-10-15 | Kabushiki Kaisha Somic Ishikawa | Joint device and method of manufacturing housing of the device |
| CN101007378A (en) * | 2007-02-01 | 2007-08-01 | 上海保捷汽车零部件锻压有限公司 | Shifting fork forging method of auto parts |
| CN102500740A (en) * | 2011-09-29 | 2012-06-20 | 芜湖禾田汽车工业有限公司 | Manufacturing process for lambdoidal control arm |
| CN102699265A (en) * | 2011-04-15 | 2012-10-03 | 大连大高阀门股份有限公司 | Mold and process for producing joint of counteractive rod |
| CN105081687A (en) * | 2014-05-23 | 2015-11-25 | 德西福格成型技术有限公司 | Method for producing a shaft |
-
2017
- 2017-12-12 CN CN201711320943.2A patent/CN108015216B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149154A (en) * | 1977-06-02 | 1978-12-26 | Shiyouichi Mitsukawa | Production of stamped wheel track having two headed rail portion being almost symmetrical to both ends of wheel track |
| EP1352695A1 (en) * | 2000-11-22 | 2003-10-15 | Kabushiki Kaisha Somic Ishikawa | Joint device and method of manufacturing housing of the device |
| CN101007378A (en) * | 2007-02-01 | 2007-08-01 | 上海保捷汽车零部件锻压有限公司 | Shifting fork forging method of auto parts |
| CN102699265A (en) * | 2011-04-15 | 2012-10-03 | 大连大高阀门股份有限公司 | Mold and process for producing joint of counteractive rod |
| CN102500740A (en) * | 2011-09-29 | 2012-06-20 | 芜湖禾田汽车工业有限公司 | Manufacturing process for lambdoidal control arm |
| CN105081687A (en) * | 2014-05-23 | 2015-11-25 | 德西福格成型技术有限公司 | Method for producing a shaft |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570717A (en) * | 2020-04-08 | 2020-08-25 | 上海兴道锻造有限公司 | Forging process of scraper chain |
| CN111570717B (en) * | 2020-04-08 | 2022-01-04 | 上海兴道锻造有限公司 | Forging process of scraper chain |
| CN113020534A (en) * | 2021-02-25 | 2021-06-25 | 株洲中车天力锻业有限公司 | Forging method of subway bearing seat |
| CN113059102A (en) * | 2021-03-15 | 2021-07-02 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Multi-station forging method and device for guide bar hanger base for warp knitting machine |
| CN113059102B (en) * | 2021-03-15 | 2023-12-01 | 中机精密成形产业技术研究院（安徽）股份有限公司 | Multi-station forging method and device for guide bar hanger base for warp knitting machine |
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| Publication number | Publication date |
|---|---|
| CN108015216B (en) | 2019-11-08 |
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