CN107695280A - T section annular forging piece forming process of roll milling - Google Patents
T section annular forging piece forming process of roll milling Download PDFInfo
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- CN107695280A CN107695280A CN201710853053.1A CN201710853053A CN107695280A CN 107695280 A CN107695280 A CN 107695280A CN 201710853053 A CN201710853053 A CN 201710853053A CN 107695280 A CN107695280 A CN 107695280A
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- semifinished product
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- 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
- B21K1/00—Making machine elements
- B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
- B21K1/761—Making machine elements elements not mentioned in one of the preceding groups rings
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Abstract
The invention discloses a kind of T section annular forging piece forming process of roll milling, including following process：(1) heat：Steel material section is placed on intermediate frequency furnace to the initial forging temperature for being heated to steel material；(2) jumping-up：The steel material section that will warm up initial forging temperature is placed in the mould of forcing press and carries out jumping-up, obtains expecting section；(3) extrusion forming：The material section forms shaping semifinished product in the shaping mould of forcing press in the presence of shaping is rushed；(4) the flat height of perforation：The shaping semifinished product is placed in the perforation cavity plate of forcing press, and flat high disposal of perforating is completed in the presence of drift hammer, obtains annular perforations semifinished product；(5) rolling：The perforation semifinished product is placed in staving press, reaming is carried out and obtains T section annular rolling workpiece；(6) whole footpath：Whole footpath is carried out to the T section annular rolling workpiece external diameter according to annular forging piece design requirement, to obtain the T section annular forging piece for meeting shape requirement.The technique can improve the utilization rate of raw material, reduce production cost, and can obtain the forging of zero-fault.
Description
Technical field
The present invention relates to forging forming technique, more particularly to T section annular forging piece grinding forming technique.
Background technology
T section annular forging piece is one kind of bearing forging.At present, the annular bearing forging in automobile, machinery is adopted mostly
With single-piece production on the press devices such as crank press, staving press, part-toroidal bearing forging is produced using two connected sets forging mode,
Forging technology waste material is as larger in expected core, and heavier-weight, stock utilization is relatively low, wastes larger, production cost height.With steel city
The price of field raw material constantly rises, and even more further increases production cost.And traditional forging forming process of roll milling is steady
It is qualitative unstable, cause some positions of bearing forging to be not fully filled, i.e., metal fails to be completely filled with platform at the end of forging roll milling forming
The pass of rank, it is impossible to ensure the zero-fault of technical requirements.
The content of the invention
Present invention aims at a kind of T section annular forging piece grinding forming technique is provided, the technique can improve former material
The utilization rate of material, production cost is reduced, and the forging of zero-fault can be obtained.
To achieve the above object, the present invention uses following technical scheme：A kind of T section annular forging piece grinding forming work
Skill, including following process：
(1) heat：Steel material section is placed on intermediate frequency furnace to the initial forging temperature for being heated to steel material；
(2) jumping-up：The steel material section that will warm up initial forging temperature is placed in the mould of forcing press and carries out jumping-up, obtains expecting section；
(3) extrusion forming：Described material section forms shaping semifinished product in the shaping mould of forcing press in the presence of shaping is rushed,
The swollen hole angle of taper of the shaping punching is less than between 0.5-1 ° of shaping mould inner conical angle；
(4) the flat height of perforation：The shaping semifinished product is placed in the perforation cavity plate of forcing press, is completed in the presence of drift hammer
Perforate flat high disposal, obtain annular perforations semifinished product；
(5) rolling：Perforation semifinished product is placed in staving press, carries out reaming, spreading ratio is being perforated between 1.37-1.45
The inner chamber of big at both ends and small in middle is formed in semifinished product, obtains T section annular rolling workpiece；
(6) whole footpath：Whole footpath is carried out to T section annular rolling workpiece external diameter according to annular forging piece design requirement, to obtain
Meet the T section annular forging piece of shape requirement.
In the process (1), it is 750-1100 kilograms, diameter between 40~Ф of Ф 55 that steel material section, which preferably uses weight,
GCr15 steel material sections.The initial forging temperature is 1050 DEG C -1100 DEG C.
In the process (4), the gap of drift hammer and cavity plate of perforating obtains height in 0.5- between 1.5-2.0mm
Annular perforations semifinished product between 1.0mm.
It is described to roll than for internal diameter ratio before and after forging rolling in the process (5).
The present invention has advantages below compared with prior art：
1. the present invention realizes the reaming of T section annular forging piece, the production of whole footpath, process stabilizing, zero-fault can be obtained
Forging, there is the characteristics of stock utilization is high, production cost is low, is adapted to small lot or high-volume annular bearing forging to produce,
The present invention has a extensive future, and techno-economic effect is notable.The present invention can be used for the big small lot of T section annular forging piece or
Person produces in enormous quantities.
2. dimensional accuracy is high, near/net shaping of profiled-cross-section annular forging piece is realized.
3. reduce machine-finish allowance, improve the stock utilization of annular forging piece.
4. substantially increase the structure property of forging, wearability and fatigue life.
5. greatly improve die life, reduce energy consumption, reduce worker labor intensity and improve production efficiency from
And reduce production cost.
Brief description of the drawings
Fig. 1 is the process flow diagram of the present invention；
Fig. 2 is present invention material section jumping-up schematic diagram,
In figure, upset die on 1., 2. material sections, 3. times upset dies；
Fig. 3 is present invention material section extrusion forming schematic diagram,
In figure, 4. upper punch, 5. shaping semifinished products, 6. molding concave dies, 7. shaping cushion moulds；
Fig. 4 is present invention shaping semifinished product perforation schematic diagram,
In figure, 8. drift hammers, 9. perforation discharge rings, 10. perforation semifinished products, 11. perforation cavity plates, 12. perforation blades, 13.
Cake core；
Fig. 5 is annular perforations semifinished product rolling schematic diagram of the present invention,
In figure, 14. roll milling wheels, 15. calendering rollers, 16. thrust rollers, 17. rolling workpiece, 18. signal rollers；
Fig. 6 is the schematic diagram of milling roller；
Fig. 7 is the annular whole external diameter schematic diagram of rolling workpiece of the present invention,
In figure, 19. whole footpath drifts, 20. whole footpath cavity plates, 21. workpiece, 22. whole footpath pad moulds.
Embodiment
(1) heat：Weight be 750-1100 kilograms, diameter to the GCr15 steel material sections between 40~Ф of Ф 55 is in KGPS-
1100 DEG C of the initial forging temperature of steel is heated on 250 intermediate frequency furnaces.
(2) jumping-up：As shown in Fig. 2 the steel material section for being heated to initial forging temperature is placed on JL31-250 forcing presses in upper upsetting
Highly reduced in the presence of thick platform 1 and lower upset die 3 and cross section increase, remove forging oxidation, obtain expecting section 2, be in next step
The base of extruding work step is prepared.
(3) extrusion forming：After expecting the jumping-up of section 2, it is placed in the mould of forcing press and carries out extrusion forming.As shown in figure 3, will material
Section 2 is placed in the shaping mould that molding concave die 6 and shaping cushion mould 7 are formed, and shaping semifinished product 5 is squeezed into the presence of upper punch 4.
In this process, it is desirable to which it is inside and outside same taper to be molded semifinished product 5, and the swollen hole angle of taper of upper punch 4 is less than shaping mould inner conical angle
Between 0.5-1 °, predominantly next flat high and annular blank rolling of the perforation of one-step forming semifinished product 5 is ready.This process need to ensure into
The spreading ratio (internal diameter ratio before and after forging rolling) of parison 5 is between 1.37-1.45.
(4) perforate：The flat height of the laggard eleven punch 11 of extrusion forming.As shown in figure 4, shaping semifinished product 5 is placed in perforation cavity plate 11,
Complete to perforate in the presence of drift hammer 8, the gap of drift hammer 8 and cavity plate 11 of perforating obtains high between 1.5-2.0mm
The annular perforations semifinished product 10 spent between 0.5-1.0mm, ensure that the height of annular perforations semifinished product 10 is just suitable, be annular perforations base
Sub 10 rollings are ready.
(5) rolling：Annular perforations semifinished product 10 is placed in D51-250 staving presses, in roll milling wheel 14 and the rolling in dumbbell shaped
In the space of the composition closing of nip drum 15, annular perforations semifinished product 10 is under the pressure and the thrust of thrust roller 16 of roll milling wheel 14, wall
It is thick thinning by thickness, until the wall contacts signal roller 18 of annular perforations semifinished product 10, it is big-and-middle to form both ends in annular perforations semifinished product 10
Between small inner chamber, obtain T section annular rolling workpiece 17.In this process, spreading ratio (the forging rolling of annular perforations semifinished product 10
Front and rear internal diameter ratio) between 1.37-.145.
(6) whole footpath：Whole footpath is the process of final annular forging piece shaping, directly affects the final size of annular forging piece.To T-shaped
It is vertical with end face to external diameter that cross sectional annular rolling workpiece 17 carries out external-diameter footpath, as shown in fig. 7, by T section annular rolling work
Part 17 is placed in the whole footpath mould of JC23-80 forcing presses, whole footpath drift 19 and whole footpath pad mould 22 fix T section annular forging piece half into
Product 17, whole footpath cavity plate 20 carries out whole footpath to the outer wall of T section annular rolling workpiece 17, final to obtain T section annular forging piece
Workpiece 21.
The present invention can be summarized with others without prejudice to the concrete form of the spirit or essential characteristics of the present invention, of the invention
Above-described embodiment can only all be considered the description of the invention rather than limitation, and every substantial technological according to the present invention is to the above
Any subtle modifications, equivalent variations and modifications that embodiment is made, are belonged in the range of technical solution of the present invention.
Claims (4)
1. a kind of T section annular forging piece grinding forming technique, it is characterized in that, including following process：
(1) heat：Steel material section is placed on intermediate frequency furnace to the initial forging temperature for being heated to steel material；
(2) jumping-up：The steel material section that will warm up initial forging temperature is placed in the mould of forcing press and carries out jumping-up, obtains expecting section；
(3) extrusion forming：The material section in the shaping mould of forcing press shaping rush in the presence of formed shaping semifinished product, it is described into
The swollen hole angle of taper of type punching is less than between 0.5-1 ° of shaping mould inner conical angle；
(4) the flat height of perforation：The shaping semifinished product is placed in the perforation cavity plate of forcing press, and perforation is completed in the presence of drift hammer
Flat high disposal, obtain annular perforations semifinished product；
(5) rolling：The perforation semifinished product is placed in staving press, carries out reaming, spreading ratio is between 1.37-1.45, described
The interior inner chamber for forming big at both ends and small in middle of semifinished product of perforating, obtains T section annular rolling workpiece；
(6) whole footpath：Whole footpath is carried out to the T section annular rolling workpiece external diameter according to annular forging piece design requirement, to obtain
Meet the T section annular forging piece of shape requirement.
2. T section annular forging piece grinding forming technique according to claim 1, it is characterized in that, in the process (1), steel
Material section preferably uses weight as 750-1100 kilograms, diameter to the GCr15 steel material sections between 40~Ф of Ф 55.
3. T section annular forging piece grinding forming technique according to claim 2, it is characterized in that, the initial forging temperature is
1050℃-1100℃。
4. T section annular forging piece grinding forming technique according to claim 1, it is characterized in that, in the process (4), wear
The gap of hole drift and cavity plate of perforating obtains annular perforations semifinished product of the height between 0.5-1.0mm between 1.5-2.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710853053.1A CN107695280A (en) | 2017-09-20 | 2017-09-20 | T section annular forging piece forming process of roll milling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710853053.1A CN107695280A (en) | 2017-09-20 | 2017-09-20 | T section annular forging piece forming process of roll milling |
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| CN107695280A true CN107695280A (en) | 2018-02-16 |
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| CN201710853053.1A Pending CN107695280A (en) | 2017-09-20 | 2017-09-20 | T section annular forging piece forming process of roll milling |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274204A (en) * | 2018-03-13 | 2018-07-13 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of wind-powered electricity generation T section ring |
| CN110180987A (en) * | 2019-06-27 | 2019-08-30 | 洛阳Lyc轴承有限公司 | The forging molding process of complex thin-wall annular forging piece |
| CN111085638A (en) * | 2019-12-23 | 2020-05-01 | 宝鸡石油机械有限责任公司 | Rolling forming method of T-shaped section full-fiber gear ring |
| CN112404337A (en) * | 2020-10-21 | 2021-02-26 | 洛阳市洛凌轴承科技股份有限公司 | NU2300 series bearing sleeve forging process |
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| CN104148554A (en) * | 2014-06-30 | 2014-11-19 | 贵州安大航空锻造有限责任公司 | Titanium alloy and annular titanium alloy forge piece forming method |
| US20150068264A1 (en) * | 2009-12-02 | 2015-03-12 | Nsk, Ltd. | Manufacturing method for bearing outer ring |
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| CN101417379A (en) * | 2007-10-27 | 2009-04-29 | 襄阳汽车轴承股份有限公司 | Tapered roller bearing ring double extension-sleeve forging technique |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108274204A (en) * | 2018-03-13 | 2018-07-13 | 张家港中环海陆特锻股份有限公司 | The manufacturing process of wind-powered electricity generation T section ring |
| CN110180987A (en) * | 2019-06-27 | 2019-08-30 | 洛阳Lyc轴承有限公司 | The forging molding process of complex thin-wall annular forging piece |
| CN110180987B (en) * | 2019-06-27 | 2024-06-07 | 洛阳轴承集团股份有限公司 | Forging forming process of complex thin-wall annular forging |
| CN111085638A (en) * | 2019-12-23 | 2020-05-01 | 宝鸡石油机械有限责任公司 | Rolling forming method of T-shaped section full-fiber gear ring |
| CN111085638B (en) * | 2019-12-23 | 2022-03-29 | 宝鸡石油机械有限责任公司 | Rolling forming method of T-shaped section full-fiber gear ring |
| CN112404337A (en) * | 2020-10-21 | 2021-02-26 | 洛阳市洛凌轴承科技股份有限公司 | NU2300 series bearing sleeve forging process |
| CN112404337B (en) * | 2020-10-21 | 2024-04-12 | 洛阳市洛凌轴承科技股份有限公司 | NU2300 series bearing sleeve forging process |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180216 |
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