CN106984747B - The design method of T section abnormity ring blank in a kind of TC4 alloy - Google Patents
The design method of T section abnormity ring blank in a kind of TC4 alloy Download PDFInfo
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- CN106984747B CN106984747B CN201611088141.9A CN201611088141A CN106984747B CN 106984747 B CN106984747 B CN 106984747B CN 201611088141 A CN201611088141 A CN 201611088141A CN 106984747 B CN106984747 B CN 106984747B
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- ring
- blank
- boss
- intermediate blank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
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Abstract
The present invention discloses a kind of design method of T section abnormity ring blank in TC4 alloy, based on T section abnormity ring in finished product TC4 alloy, according to the characteristic of the metal flow during ring rolling, intermediate blank and the height of final blank are set and the height of ring is consistent, and ring is divided into several pieces, then according to the principle of each piece of constancy of volume in plastic history, accurately calculate each piece of billet size, finally it is combined into final blank, the present invention has filled up the domestic blank for T section abnormity ring blank design in TC4 alloy.The present invention is accurately calculated by the size of each part to ring and blank, and the ring dimensional accuracy made is high, can effectively be avoided the defects of metal filling is discontented in the operation of rolling, be eliminated a large amount of manpower and material resources.
Description
Technical field
The present invention relates to annular element forming technique fields, and it is different to accurately calculate T section in TC4 alloy more particularly to one kind
The method of shape ring billet size
Background technique
Special-shaped ring piece rolling technique is to subtract ring billet sectional dimension under the collective effect of radial roll and axial roll
It is small, cross section profile forming, a kind of efficient plastic forming process of enlarged-diameter.The design side of existing rolling preform blank
Method is obtained according to certain rolling ratio by simply calculating according to the constancy of volume principle during metal plastic deformation
To billet size.Yuan Hailun is in " ring with odd-shaped cross section blahk structure optimization design and operation of rolling Computer Simulation: [doctor
Degree thesis whole-length] " in devise oblique L shape blank for upper and lower pass flange ring respectively, and carried out numerical simulation, the results showed that,
Metal flow is mainly tangential direction, and Radial Flow is more difficult；Guo Liang just et al. in " TC4 titanium alloy taper ring roll off blank
It points out in simulation optimization design, plastic engineering journal " to the hot roll off Process Design of TC4 titanium alloy taper ring part " core roller benchmark
Type " and " driven roller reference model " two kinds of not equal wall thickness taper ring billets, optimize tradition " waiting thickened walls " taper ring billet；Zhao Xiao
Light et al. is in patent: having invented one kind in CN105268886A and has been related to interior T shape ring blank upsetting squeeze forming method, has proposed in invention
Upsetting squeeze forming method forge piece blank reheating can be promoted to form, become the component with interior T-type structure.Due to the metal of TC4 alloy
Mobility is poor, thus needs more accurately to accurately calculate the size of each part of ring and blank, however closes for TC4
The method of T section abnormity ring blank design in gold, it is domestic still to belong to vacancy.
Summary of the invention
The object of the present invention is to provide a kind of design methods of T section abnormity ring blank in TC4 alloy, have filled up state
Ring is integrally divided into four by isometric first by the interior blank for T section abnormity ring blank design in TC4 alloy
Block, then individually calculates the size of each block of blank, then combines them into final integral blank.
To achieve the above object, the present invention provides the following technical scheme that
The present invention provides a kind of design methods of T section abnormity ring blank in TC4 alloy, comprising the following steps:
(1) according to the axial dimension of ring, be arranged intermediate blank b, centre blank c and final blank d height be it is contour,
Since the mobility of TC4 alloy is poor, and in the operation of rolling, metal primarily radially flows, so designed that contour blank；
H0=H0b,
H0=H0c,
H0=H0d,
In formula, H0For the axial height of ring, H0bFor the axial height of intermediate blank b, H0cFor the axial high of intermediate blank c
Degree, H0dFor the axial height of final blank；
(2) the internal diameter D according to rolling than K and ring1Determine the internal diameter of intermediate blank b, centre blank c and final blank d:
In formula, D1For the internal diameter of ring, D1b、D1c、D1dRespectively intermediate blank b, intermediate blank c, final blank d it is interior
Diameter；
(3) overall volume of ring and the volume at ring boss position are found out:
V0=V01+V02
In formula, V0For the overall volume of ring, V01For the volume at ring boss position, V02To remove the ring boss portion
The volume of the remaining rectangle ring in position, D0For the outer diameter of ring, D2For the internal diameter of ring boss, H1For the axial high of ring boss
Degree；
(4) in order to guarantee that it is full that the boss position of ring can fill, the volume at boss is designed to former ring boss portion
1.2 times of position volume, then according to constancy of volume principle, the volume for subtracting 1.2 times of boss position with total volume is remaining later
Volume, be the volume of remaining rectangular section blank；Therefore, the volume at the boss of intermediate blank b is designed to step 3
Described in 1.2 times of volume of ring boss position, find out the wall thickness of intermediate blank b:
In formula, D0bFor the outer diameter of intermediate blank b, L0bFor the wall thickness of intermediate blank b；
(5) by ring volume V0It is divided into the quartering, every partial volume is a quarter V0, since ring is about horizontal direction
Center line is symmetrical, calculates the top half of intermediate blank b entirety, and ring upper end remains as rectangular section after segmentation, by
It has been found out in volume, internal diameter and the outer diameter of rectangular section blank of this part, the upper end intermediate blank b is still after segmentation
For rectangular section, the axial height H of the rectangular section is calculated2b:
In formula, D0bFor the outer diameter of intermediate blank b, L0bFor the wall thickness of intermediate blank b；
(6) H is determined2bLater, intermediate blank c is divided into four equal parts of volume, be represented by dashed line, in order to guarantee centre
The blank at boss position is readily flowed in deformation process, and blank is required to deform in four regions split respectively,
Then the rectangular boss of intermediate blank b is designed to isometric trapezoid boss, the bottom of the trapezoid boss just extends to two
At the line of demarcation of end regions, and high 1.2 times of a height of rectangular boss of the trapezoid boss, specific calculating are as follows:
L1c=1.2L1
In formula, H1cFor the upper bottom of trapezoid boss, 2 × H3cFor the bottom of trapezoid boss；
(7) trapezoid boss size described in step 6 is coordinated to obtain final blank d after simplifying.
The present invention achieves following technical effect in terms of existing technologies:
The present invention provides a kind of design methods of T section abnormity ring blank in TC4 alloy, according to specific special-shaped ring
Ring is divided into several pieces, then according to each piece by the calculating of accurately volume and areal calculation by the area of section shape of part
Constant-volume principle in plastic history designs each piece of billet size, then they is combined, and just obtains
Whole billet size can effectively avoid metal in the operation of rolling from filling discontented lack using the ring fatigue that the present invention makes
It falls into.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the cross-sectional view of T section of embodiment of the present invention abnormity ring:
Fig. 2 is the cross-sectional view of blank b among rectangular boss of the embodiment of the present invention；
Fig. 3 is the cross-sectional view of blank c among trapezoid boss of the embodiment of the present invention；
Fig. 4 is the cross-sectional view of the final blank d of T section of embodiment of the present invention abnormity ring.
Specific embodiment
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 description, 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.
The object of the present invention is to provide a kind of design methods of T section abnormity ring blank in TC4 alloy, using ring
The calculating of block size, the size of individually designed each piece of blank, and finally it is combined into final blank.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Ring is picture 1-4 the present invention using the special-shaped ring of T section in TC4 alloy in the present embodiment
Further details of explanation out.
The present invention provides a kind of design methods of T section abnormity ring blank in TC4 alloy, including following step
It is rapid:
(1) according to the axial dimension of ring, it is contour that the height of intermediate blank b, centre blank c and final blank d, which is arranged:
H0=H0b,
H0=H0c,
H0=H0d,
In formula, H0For the axial height of ring, H0bFor the axial height of intermediate blank b, H0cFor the axial high of intermediate blank c
Degree, H0dFor the axial height of final blank；
(2) the internal diameter D according to rolling than K and ring1Determine the internal diameter of intermediate blank b, centre blank c and final blank d:
In formula, D1For the internal diameter of ring, D1b、D1c、D1dRespectively intermediate blank b, intermediate blank c, final blank d it is interior
Diameter；Rolling value more general than K is 1.2~1.8, is specifically selected according to the specific size of ring.
(3) overall volume of ring and the volume at ring boss position are found out:
V0=V01+V02
In formula, V0For the overall volume of ring, V01For the volume at ring boss position, V02To remove the ring boss portion
The volume of the remaining rectangle ring in position, D0For the outer diameter of ring, D2For the internal diameter of ring boss, H1For the axial high of ring boss
Degree；
(4) volume at the boss of intermediate blank b is designed to the 1.2 of the volume at the position of ring boss described in step 3
Times, find out the wall thickness of intermediate blank b:
In formula, D0bFor the outer diameter of intermediate blank b, L0bFor the wall thickness of intermediate blank b；
(5) by ring volume V0It is divided into the quartering, every partial volume is a quarter V0, to the upper half of intermediate blank b entirety
Part is calculated, and the upper end intermediate blank b remains as rectangular section after segmentation, calculates the axial height of the rectangular section
H2b:
In formula, D0bFor the outer diameter of intermediate blank b, L0bFor the wall thickness of intermediate blank b；
(6) H is determined2bLater, intermediate blank c is divided into four equal parts of volume, is represented by dashed line,
Then the rectangular boss of intermediate blank b is designed to isometric trapezoid boss, the bottom of the trapezoid boss is just
It extends at the line of demarcation of two end regions, and high 1.2 times of a height of rectangular boss of the trapezoid boss, it is specific to calculate such as
Under:
In formula, H1cFor the upper bottom of trapezoid boss, 2 × H3cFor the bottom of trapezoid boss；
L1c=1.1L1
(7) trapezoid boss size described in step 6 is coordinated to obtain final blank d after simplifying.It specifically will be intermediate
There is the position of dog-ear to carry out rounding in the trapezoid boss of ingredient c to smooth to obtain final ingredient d, wherein D0c=D0d, D1c=D1d,
D2c=D2d, L0c=L0d, H0c=H0d, H2c=H2d, H3c=H3d。
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (1)
1. the design method of T section abnormity ring blank in a kind of TC4 alloy, which comprises the following steps:
(1) according to the axial dimension of ring, it is contour that the height of intermediate blank b, centre blank c and final blank d, which is arranged:
H0=H0b,
H0=H0c,
H0=H0d,
In formula, H0For the axial height of ring, H0bFor the axial height of intermediate blank b, H0cFor the axial height of intermediate blank c,
H0dFor the axial height of final blank；
(2) the internal diameter D according to rolling than K and ring1Determine the internal diameter of intermediate blank b, centre blank c and final blank d:
In formula, D1For the internal diameter of ring, D1b、D1c、D1dThe internal diameter of respectively intermediate blank b, intermediate blank c, final blank d；
(3) overall volume of ring and the volume at ring boss position are found out:
V0=V01+V02
In formula, V0For the overall volume of ring, V01For the volume at ring boss position, V02It is surplus to remove ring boss position
Under rectangle ring volume, D0For the outer diameter of ring, D2For the internal diameter of ring boss, H1For the axial height of ring boss；
(4) volume at the boss of intermediate blank b is designed to 1.2 times of the volume at ring boss position described in step (3),
Find out the wall thickness of intermediate blank b:
In formula, D0bFor the outer diameter of intermediate blank b, L0bFor the wall thickness of intermediate blank b；
(5) by ring volume V0It is divided into the quartering, every partial volume is a quarter V0, to the top half of intermediate blank b entirety
It is calculated, the upper end intermediate blank b remains as rectangular section after segmentation, calculates the axial height H of the rectangular section2b:
In formula, D0bFor the outer diameter of intermediate blank b, L0bFor the wall thickness of intermediate blank b；
(6) H is determined2bLater, intermediate blank c is divided into four equal parts of volume, be represented by dashed line, then by intermediate blank b
Rectangular boss be designed to isometric trapezoid boss, the bottom of the trapezoid boss just extends to the line of demarcation of two end regions
Place, and high 1.2 times of a height of ring boss of the trapezoid boss, specific calculating are as follows:
L1c=1.2L1
In formula, H1cFor the upper bottom of trapezoid boss, 2 × H3cFor the bottom of trapezoid boss, L1cFor the height of trapezoid boss, L1It is convex for ring
The height of platform, H2cFor the distance that the top of intermediate blank c is gone to the bottom to trapezoid boss, D2cFor the internal diameter of trapezoid boss；
(7) trapezoid boss size described in step (6) is coordinated to obtain final blank d after simplifying.
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| CN109794568B (en) * | 2019-04-01 | 2020-09-22 | 西北工业大学深圳研究院 | Method for determining size of ring rolling blank with special-shaped inner and outer surfaces |
| 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 |
| CN113510208A (en) * | 2020-04-09 | 2021-10-19 | 陕西长羽航空装备有限公司 | Local die forging and rolling combined forming method for titanium alloy T-shaped section ring piece |
| CN112122517A (en) * | 2020-09-02 | 2020-12-25 | 豪梅特航空机件(苏州)有限公司 | Roll forming method for large-section wall thickness variation ratio ring forging |
| CN112453293B (en) * | 2020-11-04 | 2022-06-07 | 中国航发南方工业有限公司 | Rolling method of special-shaped ring with L-shaped section |
| CN112589021B (en) * | 2020-11-17 | 2023-06-02 | 贵州航宇科技发展股份有限公司 | Manufacturing method of IN718 alloy double-flange high-cylinder casing ring piece |
| CN113579129B (en) * | 2021-07-29 | 2022-10-21 | 武汉理工大学 | Method for calculating rolling force of complex special-shaped section ring piece based on segmentation and accumulation |
| CN114309382B (en) * | 2021-12-26 | 2023-06-23 | 贵州安大航空锻造有限责任公司 | Precise rolling forming method for Waspaloy alloy large-sized casing forging |
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| CN1586753A (en) * | 2004-09-21 | 2005-03-02 | 武汉理工大学 | Method for rolling and forming rectangular section aluminium alloy ring piece |
| KR100769253B1 (en) * | 2006-07-20 | 2007-10-23 | 한국기계연구원 | Method for designing shape in ring rolling process |
| CN102672083A (en) * | 2011-03-10 | 2012-09-19 | 马义伟 | Design method for high-temperature alloy ring preforming blank with tapered section |
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| CN104959501A (en) * | 2015-07-30 | 2015-10-07 | 西北有色金属研究院 | Method for machining TC4 thin-wall titanium alloy ring piece |
| CN105127340A (en) * | 2015-09-23 | 2015-12-09 | 太原科技大学 | Method for ring rolling forming of groove inclined inner hole ring part |
| CN205165703U (en) * | 2015-11-30 | 2016-04-20 | 贵州航天新力铸锻有限责任公司 | A dysmorphism ring blank is upset and is crowded fashioned mould |
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2016
- 2016-12-01 CN CN201611088141.9A patent/CN106984747B/en not_active Expired - Fee Related
Patent Citations (7)
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| CN1586753A (en) * | 2004-09-21 | 2005-03-02 | 武汉理工大学 | Method for rolling and forming rectangular section aluminium alloy ring piece |
| KR100769253B1 (en) * | 2006-07-20 | 2007-10-23 | 한국기계연구원 | Method for designing shape in ring rolling process |
| CN102672083A (en) * | 2011-03-10 | 2012-09-19 | 马义伟 | Design method for high-temperature alloy ring preforming blank with tapered section |
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| CN105127340A (en) * | 2015-09-23 | 2015-12-09 | 太原科技大学 | Method for ring rolling forming of groove inclined inner hole ring part |
| CN205165703U (en) * | 2015-11-30 | 2016-04-20 | 贵州航天新力铸锻有限责任公司 | A dysmorphism ring blank is upset and is crowded fashioned mould |
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