CN106670370A - Forging die and die forging technology for brake disc hub of high speed train - Google Patents

Forging die and die forging technology for brake disc hub of high speed train Download PDF

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Publication number
CN106670370A
CN106670370A CN201710154043.9A CN201710154043A CN106670370A CN 106670370 A CN106670370 A CN 106670370A CN 201710154043 A CN201710154043 A CN 201710154043A CN 106670370 A CN106670370 A CN 106670370A
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CN
China
Prior art keywords
forging
mould
finish
blocking
die
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.)
Pending
Application number
CN201710154043.9A
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Chinese (zh)
Inventor
谭叶林
张功让
王建民
王兆和
张帆
孙起立
李英楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LIAONING YINJIE EQUIPMENT TECHNOLOGY Co Ltd
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LIAONING YINJIE EQUIPMENT TECHNOLOGY Co Ltd
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Publication date
Application filed by LIAONING YINJIE EQUIPMENT TECHNOLOGY Co Ltd filed Critical LIAONING YINJIE EQUIPMENT TECHNOLOGY Co Ltd
Priority to CN201710154043.9A priority Critical patent/CN106670370A/en
Publication of CN106670370A publication Critical patent/CN106670370A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/02Die forging; Trimming by making use of special dies ; Punching during forging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K7/00Making railway appurtenances; Making vehicle parts
    • B21K7/12Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
    • B21K7/14Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes brake rigging or brake parts

Abstract

The invention discloses a forging die and a die forging technology for a brake disc hub of a high speed train. The forging die comprises a pre-forging upper die, a pre-forging lower die, a finish forging upper die and a finish forging lower die, and is structurally characterized in that each of the pre-forging upper die and the pre-forging lower die is provided with two guide through holes symmetrical in position; after being combined, the pre-forging upper die and the pre-forging lower die are located through long guide pillars; each of the finish forging upper die and the finish forging lower die is provided with two guide through holes symmetrical in position; and the finish forging upper die and the finish forging lower die are located through short guide pillars. The die forging technology comprises the steps of upsetting, pre-forging and finish forging, the entire process requires two-time firing, namely, firing during upsetting and pre-forging, and firing during finish forging, and in the finish forging step, a preformed blank is subjected to finish forging after being overturned by 180 degrees. According to the forging die, guide locating devices are arranged on the pre-forging dies and the finish forging dies, the pre-forging dies are not provided with tooth cavities, the finish forging dies are provided with tooth cavities, precise shaping of forge pieces is guaranteed, the requirement on equipment is reduced, and operation difficulty of equipment is reduced.

Description

A kind of forging die for brake disc hub of high-speed train and contour forging technique
Technical field
Specifically it is exactly a kind of forging die for brake disc hub of high-speed train and die forging work the invention belongs to forge field Skill.
Background technology
Brake disc hub is the critical component of bullet train, is played an important role when bullet train brakes.Outside hub part Shape is flanged annular cylinder shape, and arranges 9 tooth-shape structures in flange end, and for connecting brake disc, the forging wall is thin, and teeth portion is difficult In shaping.Its special working environment is additionally, since, the tissue and performance to forging proposes high requirement, manufacture is difficult Degree is larger.At present China's forging almost all dependence on import, constrains the development of China's high ferro industry.
The U of CN 202114202 disclose a kind of forging die for brake disc hub of high-speed train, and it includes mould on blocking, pre- Mould and extruding drift under mould, finish-forging on the lower mould of forging, finish-forging;Closed cavity is formed wherein on blocking after mould closure under mould and blocking ;It is the cavity of through hole in the middle of being formed after mould closure under mould and finish-forging in terminal;Drift for extruding prefabricated blank is anterior for taper Structure, rear portion is cylindrical structural, is round-corner transition between anterior and rear portion, wherein mould is by under 9 blockings under described blocking Under mould teeth portion, blocking mould V shapes base and under the blocking in mould V shape bases centre position under blocking mould boss constitute.Its For comparing traditional free forging method, although the allowance of hub blank forged piece can be greatly reduced, shorten hub and produce The production cycle of product;But in actual forging process, due to just forging teeth portion die cavity during blocking so that prefabricated blank is determined during finish-forging Bit comparison is difficult, and, operation comparatively laborious, forging forming precision higher to equipment requirement is relatively low.
Brake disc hub of high-speed train forging is the middle-size and small-size forging of high hub deep hole, can be obtained using contour forging technique production The profile forging consistent with final part, not only can ensure that continuous metallic fiber, and allowance is little, sectional dimension It is little, can avoid producing impermeable problem of quenching.
The content of the invention
For the shortcomings of the prior art, it is an object of the invention to provide a kind of brake disc hub of high-speed train Forging mold and contour forging technique, using the mould production brake disc hub of high-speed train, it is relatively low to equipment requirement, operation letter It is single, and forging forming precision is higher;Using the forming technology of jumping-up-blocking-finish-forging, not only can ensure that continuous metal is fine Dimension, allowance is little, sectional dimension is little, avoid producing impermeable problem of quenching, while the technique is also low for equipment requirements, operation letter Just, forming accuracy is high, and production efficiency is high.
For achieving the above object, the present invention adopts the following technical scheme that, a kind of forging die for brake disc hub of high-speed train, Including mould under mould, finish-forging on mould, finish-forging under mould, blocking on blocking, blocker is formed after mould closure under mould and blocking on blocking, Finish impression is formed after mould closure under mould and finish-forging on finish-forging, its structural feature is, mould is provided with 2 positional symmetries on blocking Upper guide through hole, mould is provided with 2 lower guide through hole corresponding with mould on blocking under blocking, mould and mould closure under blocking on blocking Sequentially pass through lower pilot hole, upper pilot hole by long lead column afterwards to be positioned;Mould is provided with the upper of 2 positional symmetries on finish-forging Guide through hole, mould is provided with 2 lower guide through hole corresponding with mould on finish-forging under finish-forging, and mould is equal respectively under mould, finish-forging on finish-forging 9 tooth moulds of cloth, the position of 9 teeth will mutually correspond to when mould is closed under mould and finish-forging on finish-forging, and be passed through successively by short lead column Put on pilot hole, lower pilot hole to be positioned.
Preferably, it is provided with finish-forging die cavity in teeth portion die cavity, blocker without teeth portion die cavity.
Preferably, blocker is as the inside and outside pattern draft of finish impression.
Preferably, when some positions of blocker are deeper, the interior pattern draft of blocker is 7 °, outer pattern draft For 10 °, the interior pattern draft of finish impression is 5 °, outer pattern draft is 7 °.
Preferably, the long lead column is T-shaped post, and it is made up of capital, cylinder, post bottom, and the cross-sectional width of capital is more than The cross-sectional width of cylinder, the section at post bottom is trapezoidal, and the width of the wide end of post basal cross section is as cylinder, the narrow end of post basal cross section Width less than cylinder width.
Preferably, the length of long lead column is bigger than the height sum of upper mould and blank when blocking, finish-forging.
Preferably, the short lead column is made up of capital, cylinder, post bottom, the cross-sectional width of capital and the section width of cylinder Degree is the same, and the section at post bottom is trapezoidal, and the width of the wide end of post basal cross section is as cylinder, the width of the narrow end of post basal cross section is little In the width of cylinder.
Preferably, flash gutters are additionally provided with the finish impression, flash gutters are made up of bridge portion and storehouse portion, the bridge portion of flash gutters It is located on finish-forging on mould.
A kind of brake disc hub of high-speed train contour forging technique, including jumping-up-step of blocking-finish-forging three, whole process Need 2 fiery, jumping-up and blocking are one fiery, and finish-forging is one fiery,
The jumping-up step is heated including the blank for taking out Φ a × b, jumping-up is to a height of c two procedures;
The blocking step includes,
1), mould 2 under mould on blocking 1 and blocking is assembled with long lead column 7,
2), the Preform Die for assembling is hung on lower hammering block, mould 1 on blocking of slinging,
3), the blank after jumping-up is placed on the center of the impression of mould 2 under blocking, mould 1 on blocking is put down, long lead column 7 is pulled out Go out, insert short lead column 8, with mould 1 on tup strike blocking, when the upper and lower module distance of blocking is d strike, prefabricated blank are stopped Depanning;
The finish-forging step be by prefabricated blank overturn 180 ° after carry out finish-forging, finish-forging is identical with blocking step, when the He of mould 3 on finish-forging When distance is e between mould 4 under finish-forging, finish-forging part depanning;
Preferably, by the appearance and size and flash form, size of design forging part, blank specification, forging hammer tonnage, blocking are determined With the shape and size of finish impression, the value of above-mentioned a, b, c, d, e is respectively 160mm, 301mm, 200mm, 8mm, 2mm, forges Hammer selects 5t hammers.
Preferably, teeth portion pattern is not provided with mould under mould, blocking on the blocking for adopting in blocking step, and in finish-forging step Finish impression in be provided with teeth portion die cavity.
Compared with prior art, beneficial effects of the present invention are as follows:
1st, the present invention it is guide locating device provided by being respectively provided with Preform Die, finish-forging die, to ensure deformation process in Accurate relative position between blank and mould, it is ensured that forging Accurate Shaping, while also reducing the requirement to equipment;
2nd, teeth portion die cavity is not set on Preform Die of the invention, and teeth portion die cavity is set on finish-forging grinding tool, it is prefabricated so as to avoid Base positions relatively difficult defect, further ensure that the Accurate Shaping of forging and reduces operation difficulty;
3rd, the present invention has carried out guide-localization blocking using the forming technology of jumping-up-blocking-finish-forging in blocking step, Finish-forging is carried out after prefabricated blank is overturn into 180 ° in finish-forging step, so as to need very big power to fix upper mould, drop when can avoid forging The low requirement to equipment, and it is easy to operate, forming accuracy is high, and production efficiency is high.
Description of the drawings
Fig. 1 is the front view of mould on hub blocking;
Fig. 2 is the sectional view of Fig. 1;
Fig. 3 is the front view of mould under hub blocking;
Fig. 4 is the sectional view of Fig. 3;
Fig. 5 is the structural representation of long lead column;
Fig. 6 is the front view of mould on hub finish-forging;
Fig. 7 is the sectional view of Fig. 6;
Fig. 8 is the enlarged drawing in A portions in Fig. 6;
Fig. 9 is the enlarged drawing in B portions in Fig. 6;
Figure 10 is the front view of mould under hub finish-forging;
Figure 11 is the sectional view of Figure 10;
Figure 12 is the enlarged drawing in C portions in Figure 10;
Figure 13 is the enlarged drawing in D portions in Figure 10;
Figure 14 is the structural representation of short lead column;
Figure 15 is blank jumping-up;
Figure 16 is Preform Die assembly state diagram;
Figure 17 is blocking figure;
Figure 18 is finish-forging die assembly state diagram;
Figure 19 is finish-forging figure;
In figure:Mould on 1- blockings, mould, the upper guide through hole of 5- under mould, 4- finish-forgings on mould, 3- finish-forgings under 2- blockings, is oriented to logical under 6- Hole, the long lead columns of 7-, 71- capitals, 72- cylinders, 73- posts bottom, the short lead columns of 8-, 81- capitals, 82- cylinders, 83- posts bottom.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with the accompanying drawings, described embodiment is only The a part of embodiment of the present invention, rather than the embodiment of whole.
As Figure 1-4, a kind of forging die for brake disc hub of high-speed train, including mould on blocking(1), mould under blocking (2), mould on finish-forging(3), mould under finish-forging(4), mould on blocking(1)With mould under blocking(2)Blocker is formed after closure, on finish-forging Mould(3)With mould under finish-forging(4)Finish impression is formed after closure, mould on blocking(1)It is provided with the upper guide through hole of 2 positional symmetries (5), mould under blocking(2)2 are provided with mould on blocking(1)Corresponding lower guide through hole(6), mould on blocking(1)Under blocking Mould(2)By long lead column after closure(7)Sequentially pass through guide through hole(5), lower guide through hole(6)Positioned;On finish-forging Mould(3)It is provided with the upper guide through hole of 2 positional symmetries(5), mould under finish-forging(4)2 are provided with mould on finish-forging(3)It is corresponding Lower guide through hole(6), mould on finish-forging(3), mould under finish-forging(4)The uniform 9 tooth moulds of difference, mould on finish-forging(3)With mould under finish-forging(4) The position of 9 teeth will mutually correspond to during closure, and by long lead column(7)Sequentially pass through guide through hole(5), lower guide through hole (6)Positioned;The long lead column(7)For T-shaped post, it is by capital(71), cylinder(72), post bottom(73)Composition, capital (71)Cross-sectional width be more than cylinder(72)Cross-sectional width, post bottom(73)Section be trapezoidal, post bottom(73)The wide end in section Width and cylinder(72)Equally, post bottom(73)The width of the narrow end in section is less than cylinder(72)Width, and long lead column(7) Length it is bigger than the height sum of upper mould and blank when blocking, finish-forging;The short lead column(8)By capital(81), cylinder (82), post bottom(83)Composition, capital(81)Cross-sectional width and cylinder(82)Cross-sectional width it is the same, post bottom(83)Section be It is trapezoidal, post bottom(83)The width and cylinder of the wide end in section(82)Equally, post bottom(83)The width of the narrow end in section is less than cylinder (82)Width, after blank is put in mold cavity, long lead column(7)It is replaced by short lead column(8), short lead column (8)All to submerge in guide through hole, pilot hole, short lead column can not be exposed at the end of forging(8)Length to ensure forging Guide effect when making and with tup interference is not produced.
It is provided with the finish-forging die cavity of the present invention in teeth portion die cavity, blocker without teeth portion die cavity, is different from prior art Teeth portion die cavity is just forged in blocking, and prefabricated blank positioning is relatively difficult in finish-forging, so as to affect the Accurate Shaping of forging.
Generally, blocker is as the inside and outside pattern draft of finish impression;But when some portions of blocker When position is deeper, for the ease of full of and depanning, the inside and outside pattern draft of blocker more than finish impression inside and outside pattern draft, When blocker interior pattern draft be 7 °, outer pattern draft be 10 °, then the interior pattern draft of finish impression be 5 °, outer withdrawing pattern Gradient is 7 °.
Flash gutters are additionally provided with described finish impression, flash gutters are made up of bridge portion and storehouse portion, during finish-forging, bridge portion metal compared with Thin, cooling block, the die cavity surrounding for making finish impression produces resistance, forces metal full of die cavity, storehouse portion to accommodate excess metal, Flash gutters bridge portion is located on finish-forging on mould, is, because upper mould is short with high-temperature metal time of contact during die forging, to be heated few, is not likely to produce Overheated and abrasion.
With reference to actual production process, the contour forging technique of the brake disc hub of high-speed train of formulation includes jumping-up-blocking-end Three steps of forging, whole die forging process needs 2 are fiery, and jumping-up and blocking are one fiery, and finish-forging is fiery, a technological process such as Figure 15-19 It is shown.The blank of 160 × 301mm of Φ is taken on steel ingot first, jumping-up to 200mm is high, by mould on blocking(1)With mould under blocking (2)Use long lead column(7)Assembling, the Preform Die for assembling is hung on lower hammering block, mould on blocking of slinging(1), after jumping-up Blank be placed on mould under blocking(2)The center of impression, puts down mould on blocking(1), by long lead column(7)Extract, insert short Lead column(8), with mould on tup strike blocking(1), when the upper and lower module distance of blocking is 8mm or so strike, prefabricated blank are stopped Depanning;Finish-forging step be prefabricated blank is overturn into 180 ° after carry out finish-forging, so as to need very big power to fix when can avoid forging Mould, reduces the requirement to equipment, and the assembly manipulation of finish-forging process is identical with pre- forging process, when mould on finish-forging(3)Under finish-forging Mould(4)Between distance be 2mm when, finish-forging part depanning.
Mould on the blocking adopted in the blocking step(1), mould under blocking(2)It is not provided with teeth portion die cavity, and finish-forging step In finish impression in be provided with teeth portion die cavity;
General appearance and size and flash form, size by design forging part, determine blank specification, forging hammer tonnage, blocking and The shape and size of finish impression.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention And modification, the scope of the present invention be defined by the appended.

Claims (10)

1. a kind of forging die for brake disc hub of high-speed train, including mould under mould, finish-forging on mould, finish-forging under mould, blocking on blocking, Blocker is formed after mould closure under mould and blocking on blocking, finish impression is formed after mould closure under mould and finish-forging on finish-forging, its It is characterised by, mould is provided with the upper guide through hole of 2 positional symmetries on blocking, mould is provided with 2 with mould pair on blocking under blocking The lower guide through hole answered, mould sequentially passes through lower pilot hole, upper pilot hole after mould closure with blocking by long lead column on blocking Positioned;Mould is provided with the upper guide through hole of 2 positional symmetries on finish-forging, and mould is provided with 2 with mould pair on finish-forging under finish-forging The lower guide through hole answered, mould distinguishes uniform 9 tooth moulds under mould, finish-forging on finish-forging, 9 teeth when mould is closed under mould and finish-forging on finish-forging Position mutually to correspond to, and upper pilot hole, lower pilot hole sequentially passed through by short lead column positioned.
2. mould according to claim 1, it is characterised in that teeth portion die cavity is provided with finish-forging die cavity, nothing in blocker Teeth portion die cavity.
3. mould according to claim 1, it is characterised in that blocker and the inside and outside pattern draft one of finish impression Sample.
4. mould according to claim 1, it is characterised in that when some positions of blocker are deeper, blocker Interior pattern draft be 7 °, outer pattern draft be 10 °, the interior pattern draft of finish impression is 5 °, outer pattern draft is 7 °.
5. mould according to claim 1, it is characterised in that the long lead column is T-shaped post, and it is by capital, cylinder, post Bottom constitutes, and the cross-sectional width of capital is more than the cross-sectional width of cylinder, and the section at post bottom is trapezoidal, the width of the wide end of post basal cross section As cylinder, the width of the narrow end of post basal cross section less than cylinder width.
6. mould according to claim 1, it is characterised in that the length of long lead column than upper mould when blocking, finish-forging and The height sum of blank is big.
7. mould according to claim 1, it is characterised in that the short lead column is made up of capital, cylinder, post bottom, post As the cross-sectional width of cylinder, the section at post bottom is trapezoidal, the width and cylinder of the wide end of post basal cross section to the cross-sectional width on top Equally, width of the width of the narrow end of post basal cross section less than cylinder.
8. mould according to claim 1, it is characterised in that be additionally provided with flash gutters in the finish impression, flash gutters by Bridge portion and storehouse portion constitute, and the bridge portion of flash gutters is located on finish-forging on mould.
9. a kind of brake disc hub of high-speed train contour forging technique, the including jumping-up-step of blocking-finish-forging three, whole process is needed Want 2 fiery, jumping-up and blocking are one fiery, and finish-forging is one fiery,
The jumping-up step is heated including the blank for taking out Φ a × b, jumping-up is to a height of c two procedures;
The blocking step includes,
1), mould 2 under mould on blocking 1 and blocking is assembled with long lead column 7,
2), the Preform Die for assembling is hung on lower hammering block, mould 1 on blocking of slinging,
3), the blank after jumping-up is placed on the center of the impression of mould 2 under blocking, mould 1 on blocking is put down, long lead column 7 is pulled out Go out, insert short lead column 8, with mould 1 on tup strike blocking, when the upper and lower module distance of blocking is d strike, prefabricated blank are stopped Depanning;
The finish-forging step be by prefabricated blank overturn 180 ° after carry out finish-forging, finish-forging is identical with blocking step, when the He of mould 3 on finish-forging When distance is e between mould 4 under finish-forging, finish-forging part depanning;
By the appearance and size and flash form, size that design forging part, blank specification, forging hammer tonnage, blocking and finish-forging are determined The shape and size of impression, the value of above-mentioned a, b, c, d, e is respectively 160mm, 301mm, 200mm, 8mm, 2mm, and forging hammer is selected 5t is hammered into shape.
10. contour forging technique according to claim 9, it is characterised in that:On the blocking adopted in blocking step under mould, blocking Teeth portion pattern is not provided with mould, and teeth portion die cavity is provided with the finish impression in finish-forging step.
CN201710154043.9A 2017-03-15 2017-03-15 Forging die and die forging technology for brake disc hub of high speed train Pending CN106670370A (en)

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Application Number Priority Date Filing Date Title
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Publication number Priority date Publication date Assignee Title
CN108097859A (en) * 2017-12-18 2018-06-01 吉林大学 A kind of bullet train Forging Steel Brake Disc pendulum rolles over forging mold
CN108580778A (en) * 2018-05-18 2018-09-28 山东大学 A kind of forging method of thin-walled depth chamber aircraft wheel hub forging part
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CN111195697A (en) * 2020-01-08 2020-05-26 丹阳利鹏机电科技有限公司 Cover plate forging process
CN111318633A (en) * 2020-03-28 2020-06-23 中冶重工(唐山)有限公司 Forging forming method of railway turnout switch core forging
CN112059091A (en) * 2020-10-10 2020-12-11 山东大学 Disc type aluminum alloy automobile hub forging die structure and forging method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108097859A (en) * 2017-12-18 2018-06-01 吉林大学 A kind of bullet train Forging Steel Brake Disc pendulum rolles over forging mold
CN108672645A (en) * 2018-05-04 2018-10-19 杭州前进锻造有限公司 Band tooth idle pulley conjunction gear no-welding teeth portion one-step moulding method
CN108580778A (en) * 2018-05-18 2018-09-28 山东大学 A kind of forging method of thin-walled depth chamber aircraft wheel hub forging part
CN111195697A (en) * 2020-01-08 2020-05-26 丹阳利鹏机电科技有限公司 Cover plate forging process
CN111318633A (en) * 2020-03-28 2020-06-23 中冶重工(唐山)有限公司 Forging forming method of railway turnout switch core forging
CN112059091A (en) * 2020-10-10 2020-12-11 山东大学 Disc type aluminum alloy automobile hub forging die structure and forging method

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Application publication date: 20170517

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