CN108372264B - A method of being conducive to super large ring roll off stable formation four embrace roller layout - Google Patents
A method of being conducive to super large ring roll off stable formation four embrace roller layout Download PDFInfo
- Publication number
- CN108372264B CN108372264B CN201810130971.6A CN201810130971A CN108372264B CN 108372264 B CN108372264 B CN 108372264B CN 201810130971 A CN201810130971 A CN 201810130971A CN 108372264 B CN108372264 B CN 108372264B
- Authority
- CN
- China
- Prior art keywords
- roller
- armful
- value
- position angle
- initial position
- 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.)
- Active
Links
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/04—Constraint-based CAD
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Mathematical Analysis (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Computational Mathematics (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
A method of being conducive to super large ring roll off stable formation four embrace roller layout, and what the size and equipment that need to only obtain roll and ring billet provided embraces roller power, it will be able to determine four that the are conducive to shape stability layouts for embracing roller.Present invention determine that four embrace roller layout, ring billet can not only be effectively prevent to be detached from roll and cause looping mill rolling process unstability, moment of flexure suffered in entire ring billet can also be made to be distributed more uniformly across, stress of ring billet during roll off is easier to maintain balance, looping mill rolling state is more stable, prevent ring billet from leading to excessive distortion since the layout for embracing roller is unreasonable under Planar Mechanisms, it breaches and is laid out the unreasonable technical bottleneck for causing ring billet that unstability occurs under overconstrained condition due to embracing roller, the development for the two-way roll off equipment of four armfuls of roller super large rings provides technical support.The present invention improves the success rate of super large ring-rolling, shortens the production cycle, has the advantages that conveniently, accurately and efficiently.
Description
Technical field
The present invention relates to ring parts rolling forming manufacture fields, are a kind of four for being conducive to super large ring roll off stable formation armful
The method of roller layout.
Background technique
High-performance super large ring is widely used in the fields such as space flight, nuclear power, wind-powered electricity generation, and especially aluminium alloy super large ring is as space flight
The basic component of heavy launcher fuel tank has in terms of the construction of Chinese Space station, moonfall engineering and mars exploration engineering
Having Major Strategic Demand, (Guo Lianggang, Wang Fengqi, Liang Lei wait high-performance Ring Rolling forming intelligent simulation optimization new approaches and grind
Study carefully progress [J] precision form engineering, 2017,9 (4): 1-11.).The super large ring refers to diameterRing.So
And the two-way roll off of super large ring is due to ring billet super-big and overweight, and inertia is very big, and ring billet is caused easily to be detached from roll, unstable phenomenon occurs,
Therefore for super large ring-rolling, novel four have been used to embrace collars rolling plant in the world.This is because when embracing roller using four,
Roller is embraced relative to classical two, increases constraint in the radial growth direction of ring billet, greatly reduces the wind that ring billet is detached from roll
Danger, to significantly improve the stability of the two-way rolling and shaping process of super large ring.However, embracing the two-way roll off of roller super large ring for four
Process is detached from a possibility that unstability occurs for roll although increasing constraint and avoiding ring billet, if four layouts for embracing roller are unreasonable,
It very likely will lead to ring billet to be crushed during the rolling process, generate excessive distortion, cause the unstability under Planar Mechanisms.Therefore, such as
Four layouts for embracing roller of what design can make the stress of ring billet more uniform, be easier to maintain balance, avoid due to embracing
Roller layout is unreasonable to cause ring billet that unstability occurs under overconstrained condition, is that four armfuls of collars roll into shape stability control and equipment
Research and develop faced one of technical bottleneck.Northwestern Polytechnical University proposes in the innovation and creation application No. is 201810037638.0
A kind of method that the two-way roll off stable formation criterion of roller ultra-large type ring is embraced in determination four embraces a roller cloth given using the criterion
Office under conditions of embracing roller power and ring billet size, can stablize shape to whether four armfuls of two-way roll off processes of roller ultra-large type ring are in
State judges, and makes real-time adjustment to looping mill rolling technique in conjunction with judging result, avoids looping mill rolling process that unstability occurs in time.The present invention
Based on four armfuls of two-way roll off stable formation criterions of roller ultra-large type ring, propose a kind of to be conducive to the four of super large ring roll off stable formation
The method of a armful of roller layout provides important evidence and side for shape stability control and the development of the two-way roll off equipment of super large ring
Method.
Summary of the invention
Existing in the prior art unreasonable ring billet is caused to be lost under overconstrained condition due to embracing roller layout to overcome
Steady deficiency, the invention proposes a kind of methods that four for being conducive to super large ring roll off stable formation embrace roller layout.
Detailed process of the invention is:
Step 1 determines four initial position angles for embracing roller:
It is first armful of roller, second armful of roller, third armful roller and the 4th armful of roller respectively that described four, which embrace roller,.Wherein, described
First armful of roller and second armful of roller are respectively positioned on the super large ring close to driven roller side, and the third embraces roller and the 4th armful of roller is respectively positioned on
The super large ring is close to cone roller side, and C point is the contact position of first armful of roller external peripheral surface and ring billet external peripheral surface；C1Point
For the contact position of second armful of roller external peripheral surface and ring billet external peripheral surface；D point is that third embraces roller external peripheral surface and ring billet
The contact position of external peripheral surface；D1Point is the contact position of the 4th armful of roller external peripheral surface and ring billet external peripheral surface.
Described four embrace rollers respectively with the radial deformation area A of ring billetBaseBetween forming position angle: COrABaseThe angle of formation is
First armful of roller initial position angle α1；C1OrABaseThe angle of formation is second armful of roller initial position angle beta1；DOrABaseThe angle of formation is
Three armfuls of roller initial position angle α2；D1OrABaseThe angle of formation is the 4th armful of roller initial position angle beta2.Due to first armful of roller and second armful
Roller is symmetrical about coordinate system x-axis, and third embraces roller and the 4th armful of roller, and to also relate to coordinate system x-axis symmetrical, therefore β1=α1, β2=α2。
In any cross section of the ring billet and ring heart OrBetween be line P；POrABaseThe angle of formation is cross-section location angle
Four embrace rollers layout depend on every angle setting occurrence, by the optimization to determining each initial position angle from
And obtain four final layouts for embracing roller.
The coordinate origin O is directed toward ring heart OrRectilinear direction be coordinate system x-axis；Coordinate origin O is crossed to be parallel to
The rectilinear direction of ring billet central axis is coordinate system y-axis；It crosses coordinate origin O and makees to be coordinate system z perpendicular to the rectilinear direction in the face xOy
Axis；The origin O of the coordinate system is the radial deformation area A of ring billetBaseLocate the geometric center of cross section.
Step 2 proposes the foundation for the value for determining that four are embraced roller layout:
The value that four are embraced roller layout is obtained by four armfuls of determining two-way roll off stable formation criterion S of roller ultra-large type ring
Foundation.Four armfuls of two-way roll off stable formation criterion S of roller ultra-large type ring are as follows:
In formula, RT baseFor radius in ring billet, FG2Roller power is embraced for third, H is ring billet height, and B is ring billet wall thickness, σsFor ring billet
The yield stress of material；For Moment Influence function absolute value.
The Moment Influence function absolute valueExpression formula are as follows:
In formula (3),For first armful of roller influence function,Roller influence function is embraced for third；K is bilateral
Embrace roller power proportionality coefficient；
It is describedExpression formula are as follows:
It is describedExpression formula are as follows:
The bilateral embraces the expression formula of roller power proportionality coefficient k are as follows:
In formula (6), FG1For first armful of roller power
In formula (2), the maximum value of Moment Influence function absolute valueIt is to give first armful of roller initial bit
Angle setting α1, third embrace roller initial position angle α2, bilateral embrace roller power proportionality coefficient k under, Moment Influence function absolute valueAt cross-section location angleOn maximum value；
WhenWhen, the value of stable formation criterion S is minimum, obtains advantageous
Four in shape stability are embraced roller initial position angle as ([α1]OPT,[α2]OPT,[β1]OPT,[β2]OPT)。
In the foundation for the value for proposing to determine that four are embraced roller layout,It is obtained according to following steps
To: given bilateral is embraced into roller power proportionality coefficient k first and is updated to Moment Influence function absolute valueExpression formula
In obtainIt shouldIt is absolute to give the Moment Influence function that bilateral is embraced under roller power proportionality coefficient k
Value；Secondly by first armful of roller initial position angle α1Each numerical value in value range embraces roller initial position angle α with third respectively2
Value range in each combinations of values, solve under all combinationsIt is finally all from what is obtainedIn find minimum value, be denoted as
Step 3 determines four value ranges for embracing roller initial position angle:
Four value ranges for embracing roller initial position angle are determined according to critical geometrical condition.
Identified first armful of roller initial position angle α1Value range be [α1min,α1max], third embraces roller initial position angle
α2Value range be [α2min,α2max], second armful of roller initial position angle beta1Value range be [β1min,β1max], the 4th armful of roller
Initial position angle beta2Value range be [β2min,β2max]。
The critical geometrical condition are as follows: do not interfere determination between roller and driven roller between ring billet with first armful
First armful of roller initial position angle α1Minimum value α1min；It is embraced and is not interfered between ring billet between roller and cone roller really with third
Determine third and embraces roller initial position angle α2Maximum value be α2max；It is embraced with first armful of roller and third and is not sent out between ring billet between roller
It is raw to interfere determining first armful of roller initial position angle α1Maximum value α1max；It is embraced between roller and first armful of roller between ring billet with third
It does not interfere determining third and embraces roller initial position angle α2Minimum value α2min。
The determination four detailed processes for embracing roller position angle value range are:
I first is embraced not to be interfered between ring billet between roller and driven roller
When the outer circumference surface of first armful of roller outer circumference surface and driven roller outer circumference surface and ring billet is tangent simultaneously to be contacted, institute's shape
At first armful of roller position angle value be α1min, the α1minFor the value lower limit of first armful of roller position angle.
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, therefore β1=α1, β1min=α1min。
II third is embraced and is not interfered between ring billet between roller and cone roller
When the outer circumference surface of the outer circumference surface of third armful roller and cone roller outer surface and ring billet is tangent simultaneously to be contacted, formed
Third embrace roller position angle value be α2max, the α2maxThe value upper limit of roller position angle is embraced for third.
Since third armful roller and the 4th armful of roller are symmetrical about coordinate system x-axis, so β2=α2, β2max=α2max。
III first armfuls of rollers and third are embraced between roller and first armful of roller and third are embraced roller and do not sent out between ring billet respectively
Raw interference.
When the outer circumference surface and the outer circumference surface of third armful roller and the outer circumference surface three of ring billet of first armful of roller are tangent simultaneously
Contact, and when first armful of roller and third armful roller symmetrical about straight line l, the value for being formed by the position angle of first armful of roller is α1max,
The α1maxFor the value upper limit of first armful of roller position angle.The straight line l was the straight line that ring heart is parallel to coordinate system z-axis.
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, so β1=α1, β1max=α1max。
IV third is embraced between roller and first armful of roller and the third embraces roller and first armful of roller is not sent out between ring billet respectively
Raw interference.
When the outer circumference surface and the outer circumference surface of third armful roller and the outer circumference surface three of ring billet of first armful of roller are tangent simultaneously
Contact, and when first armful of roller and third armful roller symmetrical about straight line l, being formed by third and embracing the value of roller position angle is α2min, should
α2minThe value lower limit of the position angle of roller is embraced for third.The straight line l was the straight line that ring heart is parallel to z-axis.
Since third armful roller and the 4th armful of roller are symmetrical about coordinate system x-axis, so β2=α2, β2min=α2min。
Step 4 determines the value for the initial position angle that four that are conducive to shape stability are embraced roller:
The determination is conducive to the value ([α of the initial position angle of four armfuls of rollers of shape stability1]OPT,[α2]OPT,
[β1]OPT, [β2]OPT) specific step is as follows:
I embraces roller power proportionality coefficient k by given bilateral, obtains
II equal part first embraces roller initial position angle α1Value range [α1min,α1max], obtain a series of decile value α1,i；Together
When, equal part third embraces roller initial position angle α2Value range [α2min,α2max], obtain a series of decile value α2,j
Roller initial position angle α is embraced by equal part first of u1The increment of value range, equal part first embrace roller initial position angle α1's
Value range [α1min,α1max], obtain α1,i.With obtained α1,iAs each position angle of first armful of roller, expression formula are as follows:
α1, i=α1,min+ (i-1) u i=1,2,3 ..., s (8)
I is that equal part first embraces roller initial position angle α1Value range [α1min,α1max] after a series of obtained α1Decile value
Serial number, s α1,iSum, expression formula is
Roller initial position angle α is embraced by equal part third of v2The increment of value range, equal part third embrace roller initial position angle α2's
Value range [α2min,α2max], obtain α2,j.With obtained α2,jEach position angle of roller is embraced as third, expression formula is
α2, j=α2,min+ (j-1) v j=1,2,3 ..., t (10)
J is that equal part third embraces roller initial position angle α2A series of α obtained after value range2The serial number of decile value, t α2,j
Sum, expression formula is
III successively solves α1=α1,iAnd α2=α2,jWhen?Maximum value
As first armful of roller initial position angle α1=α1,i, third armful roller initial position angle α2=α2,jWhen, by α1,i、α2,jIt substitutes into
It arrivesIn, it obtains?The maximum value of upper acquirement is denoted asDescribedThe case where embracing roller power proportionality coefficient k for given bilateral
Under, α1Value is α1,iAnd α2Value is α2,jWhen, Moment Influence function absolute value?Upper acquirement
Maximum value.
I=1 is successively given, 2 ..., s, j successively take 1,2,3 ..., when t, obtained all α1And α2Valued combinations
(α1,i,α2,j) be expressed as
Work as α1=α1,iAnd α2=α2,jWhen?The maximum value of acquirement isObtained all α1And α2Valued combinations underIt is expressed as
IV compare it is allValue, find minimum value therein and be denoted asIt is describedCorresponding α1Value be conducive to shape stability first
Embrace roller initial position angle [α1]OPT, shouldThe α answered2Value be to be conducive to the third of shape stability
Embrace roller initial position angle [α2]OPT.Due to β1=α1, therefore [β1]OPT=[α1]OPT；Due to β2=α2, therefore [β2]OPT=[α2]OPT；
So far, obtain being conducive to the value of the initial position angle of four armfuls of rollers of shape stability.
The present invention provides weight for the development that the two-way roll off technical study of super large ring embraces roller ultra-large type ring rolling apparatus with four
The theoretical foundation and method wanted.
As long as the present invention obtains armful roller power of size and the equipment offer of roll and ring billet, it will be able to determine to be conducive to
Four of shape stability embrace the layout of roller.Four determined according to the present invention embrace the layout of roller, can not only effectively prevent ring
Base is detached from roll and causes looping mill rolling process unstability, additionally it is possible to so that moment of flexure suffered in entire ring billet is distributed more uniformly across, ring billet
Stress during roll off is easier to maintain balance, and looping mill rolling state is more stable, prevents ring billet under Planar Mechanisms due to embracing roller
It is laid out unreasonable and leads to excessive distortion, improve the success rate of super large ring-rolling, shorten the production cycle, have convenient, accurate, high
The advantages of effect.The two-way roll off of roller super large ring is embraced for four, this method, which can be broken through, is laid out unreasonable cause due to embracing roller at present
The technical bottleneck of unstability occurs under overconstrained condition for ring billet, provides a kind of layout of four for being conducive to shape stability armful roller
Mode, the development for the two-way roll off equipment of four armfuls of roller super large rings provide technical support.
Detailed description of the invention
Fig. 1 is four and embraces the two-way roll off schematic diagram of roller super large ring；
Fig. 2 is four and embraces the two-way roll off top view of roller super large ring；
Fig. 3 is ring billet radial deformation area cross-sectional view；
Fig. 4 is to embrace roller and driven roller, cone roller and ring billet critical interference figure；
Fig. 5 is to embrace critical interference figure between roller and ring billet；
Fig. 6 is flow chart of the invention.
In figure:
1. driven roller；2. core roller；Cone roller on 3.；4. lower cone roller；5. first armful of roller；6. second armful of roller；7. third embraces roller； 8
4th armful of roller；9. ring billet.
Specific embodiment
The present embodiment is a kind of method that four for being conducive to super large ring roll off stable formation embrace roller layout.
Roller 7, the 4th armful are embraced by driven roller 1, core roller 2, upper cone roller 3,4, first armfuls of lower cone roller, 5, second armfuls of roller roller 6, third
Roller 8 and ring billet 9 form four and embrace the two-way roll off layout of roller super large ring.Wherein,
OrFor ring heart, ABaseFor the radial deformation area of ring billet.The origin O of coordinate system is the radial deformation area A of ring billetBaseLocate transversal
The geometric center in face.Coordinate origin O is directed toward ring heart OrRectilinear direction be coordinate system x-axis；Coordinate origin O is crossed to be parallel to
The rectilinear direction of ring billet central axis is coordinate system y-axis；It crosses coordinate origin O and makees to be coordinate system perpendicular to the rectilinear direction in the face xOy
Z-axis.Ring billet inside radius is RI base, ring billet wall thickness is B, and ring billet height is H, and radius is R in ring billetT base.As shown in Figures 1 to 3.
The middle radius R of the ring billetT baseIt is determined by formula (1):
Specific step is as follows for the present embodiment:
Step 1 determines four initial position angles for embracing roller:
It is first armful of roller, second armful of roller, third armful roller and the 4th armful of roller respectively that described four, which embrace roller,.Wherein, described
First armful of roller 5 and second armful of roller 6 are respectively positioned on the super large ring close to driven roller side, and the third embraces roller 7 and the 4th armful of roller 8 is equal
Positioned at the super large ring close to cone roller side, and C point is the contact position of first armful of 5 external peripheral surface of roller and 9 external peripheral surface of ring billet
It sets；C1Point is the contact position of second armful of 6 external peripheral surface of roller and 9 external peripheral surface of ring billet；D point is that third embraces 7 excircle of roller
The contact position on surface and 9 external peripheral surface of ring billet；D1Point is the 4th armful of 8 external peripheral surface of roller and 9 external peripheral surface of ring billet
Contact position.
Described four embrace rollers respectively with the radial deformation area A of ring billetBaseBetween forming position angle: COrABaseThe angle of formation is
First armful of roller initial position angle α1；C1OrABaseThe angle of formation is second armful of roller initial position angle beta1；DOrABaseThe angle of formation is
Three armfuls of roller initial position angle α2；D1OrABaseThe angle of formation is the 4th armful of roller initial position angle beta2.Due to first armful of roller and second armful
Roller is symmetrical about coordinate system x-axis, and third embraces roller and the 4th armful of roller, and to also relate to coordinate system x-axis symmetrical, therefore β1=α1, β2=α2。
In any cross section of the ring billet and ring heart OrBetween be line P；POrABaseThe angle of formation is cross-section location angle
Four layouts for embracing roller depend on the occurrence of every angle setting, by the excellent of each armful of determining roller initial position angle
Change and obtains four final layouts for embracing roller.
In the present embodiment, due to β1=α1And β2=α2, therefore according to the initial position angle α of first armful of determining roller1Determine
The initial position angle beta of two armfuls of rollers1, the initial position angle α of roller is embraced according to determining third2Determine the initial position angle of the 4th armful of roller
β2。
Step 2 proposes the foundation for the value for determining that four are embraced roller layout:
It proposes to determine that four are embraced roller layout by the determining two-way roll off stable formation criterion S of four armfuls of roller ultra-large type rings
The foundation of value.
In Fig. 2, at the contact position C of first armful of roller external peripheral surface and ring billet external peripheral surface, first armful of roller is to ring
The roller power of embracing of base is known as first armful of roller power FG1, ring heart O is directed toward in directionr；In second armful of roller external peripheral surface and ring billet outer circle weekly form
The contact position C in face1Place, second armful of roller are known as second armful of roller power P to the roller power of embracing of ring billetG1, ring heart O is directed toward in directionr；In third
At the contact position D for embracing roller external peripheral surface and ring billet external peripheral surface, third embraces roller and is known as third armful to the roller power of embracing of ring billet
Roller power FG2, ring heart O is directed toward in directionr；In the contact position D of the 4th armful of roller external peripheral surface and ring billet external peripheral surface1Place, the 4th
It embraces roller and the 4th armful of roller power P is known as to the roller power of embracing of ring billetG2, ring heart O is directed toward in directionr。
A kind of determination four is proposed in the innovation and creation application No. is 201810037638.0, and to embrace roller ultra-large type ring double
To the method for roll off stable formation criterion, in the innovation and creation, four armfuls of two-way roll off stable formation criterion S of roller super large ring are as follows:
In formula (2), H is ring billet height, and B is ring billet wall thickness, sees Fig. 3；σsFor the yield stress of ring billet material, FG2For third
Embrace roller power；RT baseFor radius in ring billet, formula (1) is seen；Formula (3) is Moment Influence function absolute valueExpression formula.
In formula (3),For first armful of roller influence function, expression formula is shown in formula (4),Roller influence function is embraced for third,
Its expression formula is shown in formula (5)；K is that bilateral embraces roller power proportionality coefficient, and expression formula is shown in formula (6).In formula (6), FG1For first armful of roller
Power.
In formula (2), the maximum value of Moment Influence function absolute valueIt is to give first armful of roller initial bit
Angle setting α1, third embrace roller initial position angle α2, bilateral embrace roller power proportionality coefficient k under, Moment Influence function absolute valueAt cross-section location angleOn maximum value.
As stable formation criterion S≤1, unstability does not occur for looping mill rolling process.As stable formation criterion S > 1, looping mill rolling process
Unstability has occurred.
Therefore the value of stable formation criterion S is smaller, is more conducive to stablize.Given bilateral embraces roller power proportionality coefficient k, is updated to curved
Square influence function absolute valueIt is obtained in expression formulaIt shouldIt is embraced for given bilateral
Moment Influence function absolute value under roller power proportionality coefficient k.As first armful of roller initial position angle α1Roller initial position is embraced with third
Angle α2When taking different value respectively, it can make describedAt cross-section location angleOn maximum valueIt is different.In α given respectively1And α2Value range in, there is always one group of α1And α2Value, can make
Described in obtainingMinimum is denoted asWhen the maximum of Moment Influence function absolute value
ValueWhen, it enables to stable formation criterion S to obtain minimum value, obtainsα1Value be first armful of roller initial position angle for being conducive to shape stability, be denoted as [α1]OPT；
It obtainsα2Value be conducive to shape stability third embrace roller initial position angle, be denoted as
[α2]OPT；Because of β1=α1, so [β1]OPT=[α1]OPT；Because of β2=α2, so [β2]OPT=[α2]OPT.In summary, when
DescribedWhen minimum, i.e.,When, stable formation is sentenced
It is minimum according to the value of S.At this point, four that obtain being conducive to shape stability are embraced roller initial position angle ([α1]OPT,[α2]OPT,
[β1]OPT,[β2]OPT) value.
Step 3 determines four value ranges for embracing roller initial position angle:
When carrying out four layout designs for embracing roller, roller must be avoided embracing between roller and driven roller, cone roller and ring billet and embraced
It is interfered between ring billet.Critical geometrical condition is proposed accordingly are as follows:
It is not interfered between ring billet between roller and driven roller with first armful and determines first armful of roller initial position angle α1
Minimum value α1min；It is embraced with third and does not interfere determining third armful roller initial position angle between roller and cone roller between ring billet
α2Maximum value be α2max；It is embraced with first armful of roller and third at the beginning of not interfering determining first armful of roller between ring billet between roller
Beginning position angle α1Maximum value α1max；It is embraced with third and does not interfere determining third between ring billet between roller and first armful of roller
Embrace roller initial position angle α2Minimum value α2min。
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, therefore second armful of roller initial position angle beta1Minimum
Value β1min=α1min, second armful of roller initial position angle beta1Maximum value β1max=α1max.Roller is embraced due to third also to close with the 4th armful of roller
It is symmetrical in coordinate system x-axis, therefore the 4th armful of roller initial position angle beta2Minimum value β2min=α2min, the 4th armful of roller initial position angle beta2
Maximum value be β2max=α2max。
Four value ranges for embracing roller position angle are determined according to the critical geometrical condition of proposition:
1. first armful does not interfere between ring billet between roller and driven roller
Roller and driven roller, cone roller and the critical interference schematic diagram of ring billet are embraced according to Fig.4, when first armful of 5 outer circumference surface of roller
With the outer circumference surface of 1 outer circumference surface of driven roller and ring billet 9 is tangent simultaneously contact when, the value for being formed by first armful of roller position angle is
α1min, the α1minFor the value lower limit of first armful of roller position angle.
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, therefore β1=α1, β1min=α1min。
2. third is embraced and is not interfered between ring billet between roller and cone roller
Roller and driven roller, cone roller and the critical interference schematic diagram of ring billet are embraced according to Fig.4, when third embraces the excircle of roller 7
The outer circumference surface of face and 3 outer surface of cone roller and ring billet 9 is tangent simultaneously when contacting, and is formed by third and embraces the value of roller position angle and is
α2max, the α2maxThe value upper limit of roller position angle is embraced for third.
Since third armful roller and the 4th armful of roller are symmetrical about coordinate system x-axis, so β2=α2, β2max=α2max。
3. first armful of roller and third are embraced between roller and first armful of roller and third are embraced roller and do not sent out between ring billet respectively
Raw interference.
Critical interference schematic diagram between roller and ring billet is embraced according to Fig.5, when the outer circumference surface and third of first armful of roller 5 are embraced
The outer circumference surface of roller 7 and the outer circumference surface three tangent contact simultaneously of ring billet 9, and first armful of roller 5 and third embrace roller about straight line l
When symmetrical, the value for being formed by first armful of roller position angle is α1max, the α1maxFor the value upper limit of first armful of roller position angle.It is described
Straight line l be straight line that ring heart is parallel to z-axis.
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, so β1=α1, β1max=α1max。
4. third is embraced between roller and first armful of roller and the third embraces roller and first armful of roller is not sent out between ring billet respectively
Raw interference.
Critical interference schematic diagram between roller and ring billet is embraced according to Fig.5, when the outer circumference surface and third of first armful of roller 5 are embraced
The outer circumference surface of roller 7 and the outer circumference surface three tangent contact simultaneously of ring billet 9, and first armful of roller 5 embraces roller 7 about straight with third
When line l is symmetrical, being formed by third and embracing the value of roller position angle is α2min, the α2minThe value lower limit of the position angle of roller is embraced for third.
The straight line l was the straight line that ring heart is parallel to z-axis.
Since third armful roller and the 4th armful of roller are symmetrical about coordinate system x-axis, so β2=α2, β2min=α2min。
To sum up, the first armful of roller initial position angle α determined1Value range be [α1min,α1max], third embraces roller initial bit
Angle setting α2Value range be [α2min,α2max], second armful of roller initial position angle beta1Value range be [β1min,β1max], the 4th
Embrace roller initial position angle beta2Value range be [β2min,β2max]。
Step 4 determines the value for the initial position angle that four that are conducive to shape stability are embraced roller:
The foundation that the value that four are embraced roller layout is determined according to the proposition that step 2 proposes, when Moment Influence function absolute value
Maximum valueWhen, enable to stable formation criterion S to obtain minimum value；When
When the value minimum of the stable formation criterion S, obtainα1Value be conducive to shape stability
First armful of roller initial position angle [α1]OPT, obtain simultaneouslyα2Value be conducive to form stable
Property third embrace roller initial position angle [α2]OPT。
Due to β1=α1, therefore [β1]OPT=[α1]OPT；Due to β2=α2, therefore [β2]OPT=[α2]OPT。
The determination is conducive to the initial position angle ([α of four armfuls of rollers of shape stability1]OPT,[α2]OPT,[β1]OPT,
[β2]OPT) value specific step is as follows:
1. given bilateral embraces roller power proportionality coefficient k, obtainExpression formula
In the present embodiment, if first armful of roller power FG1Value and third embrace roller power FG2Value it is equal, i.e. k=1 is updated to formula
(3) in, Moment Influence function absolute value when k=1 is obtainedFor
In formula (7), first armful of roller influence functionExpression formula is shown in formula (4) that third embraces roller influence function
Expression formula is shown in formula (5).
2. etc. the obtained first armful of roller initial position angle α of point step 31Value range [α1min,α1max], it obtains a series of
Decile value α1,i；Meanwhile the third that equal part step 3 obtains embraces roller initial position angle α2Value range [α2min,α2max], it obtains
A series of decile value α2,j
Roller initial position angle α is embraced by equal part first of u1The increment of value range, equal part first embrace roller initial position angle α1's
Value range [α1min,α1max], obtain α1,i.With obtained α1,iAs each position angle of first armful of roller, expression formula is
α1, i=α1,min+ (i-1) u i=1,2,3 ..., s (8)
I is that equal part first embraces roller initial position angle α1Value range [α1min,α1max] after a series of obtained α1Decile value
Serial number, s α1,iSum, expression formula is
Roller initial position angle α is embraced by equal part third of v2The increment of value range, equal part third embrace roller initial position angle α2's
Value range [α2min,α2max], obtain α2,j.With obtained α2,jEach position angle of roller is embraced as third, expression formula is
α2, j=α2,min+ (j-1) v j=1,2,3 ..., t (10)
J is that equal part third embraces roller initial position angle α2Value range [α2min,α2max] after a series of obtained α2Decile value
Serial number, t α2,jSum, expression formula is
In the present embodiment, first armful of roller initial position angle α of acquisition1Value range beIt is initial that third embraces roller
Position angle α2Value range beEqual part first embraces roller initial position angle α1The increment u of value range isDeng
Third is divided to embrace roller initial position angle α2The increment v of value range is
By first armful of roller initial position angle α1Value rangeEqual part is carried out, α is obtained1,i, obtained according to formula (9)
α1,iTotal s=451, i=1,2,3 ..., 451；
Third is embraced into roller initial position angle α2Value rangeEqual part is carried out, α is obtained2,j, obtained according to formula (11)
To α2,jTotal t=451, j=1,2,3 ..., 451.
3. successively solving α1=α1,iAnd α2=α2,jWhen?Maximum value
As first armful of roller initial position angle α1=α1,i, third armful roller initial position angle α2=α2,jWhen, by α1,i、α2,jIt substitutes into
Shown in formula (7)In, it obtains?The maximum value of upper acquirement is denoted asDescribedThe case where embracing roller power proportionality coefficient k for given bilateral
Under, α1Value is α1,iAnd α2Value is α2,jWhen, Moment Influence function absolute value?Upper acquirement
Maximum value.
I=1 is successively given, 2 ..., s, j successively take 1,2,3 ..., when t, obtained all α1And α2Valued combinations
(α1,i,α2,j) be expressed as
Work as α1=α1,iAnd α2=α2,jWhen?The maximum value of acquirement isObtained all α1And α2Valued combinations underIt is expressed as
In the present embodiment, s=451, t=451 are updated in formula (12), obtain all α1And α2Valued combinations be expressed as
Obtained all α1And α2Valued combinations underIt is expressed as
The value of all elements in formula (14) and formula (15) is solved below:
When i=1, according to formula (8), obtainJ successively takes 1,2,3 ..., and 451, it obtains:
When j=1, according to formula (10), obtainAccording to formula (7), solution obtains working as α1=α1,1, α2=α2,1
When,?The maximum value of acquirement
When j=2, according to formula (10), obtainAccording to formula (7), solution obtains working as α1=α1,1, α2=
α2,2When,?The maximum value of acquirement
…
When j=451, according to formula (10), obtainAccording to formula (7), solution obtains working as α1=α1,1, α2=
α2,451When,?The maximum value of acquirement
When i=2, according to formula (8), obtainJ successively takes 1,2,3 ..., and 451, it obtains:
When j=1, according to formula (10), obtainAccording to formula (7), solution obtains working as α1=α1,2, α2=α2,1
When,?The maximum value of acquirement
When j=2, according to formula (10), obtainAccording to formula (7), solution obtains α1=α1,2, α2=α2,2
When,?The maximum value of acquirement
…
When j=451, according to formula (10), obtainAccording to formula (7), solution obtains α1=α 1,2, α2=α
When 2,451,?The maximum value of acquirement
……
When i=451, according to formula (8), obtainJ successively takes 1,2,3 ..., and 451, it obtains:
When j=1, according to formula (10), obtainAccording to formula (7), solution obtains α1=α1,451, α2=α2,1
When,?The maximum value of acquirement
When j=2, according to formula (10), obtainAccording to formula (7), solution obtains α1=α1,451, α2=
α2,2When,?The maximum value of acquirement
…
When j=451, according to formula (10), obtainAccording to formula (7), solution obtains α1=α1,451, α2=
α2,451When,?The maximum value of acquirement
4. that compares is allValue, find minimum value therein and be denoted asIt is describedCorresponding α1Value be conducive to shape stability first
Embrace roller initial position angle [α1]OPT, shouldCorresponding α2Value be to be conducive to the third of shape stability
Embrace roller initial position angle [α2]OPT.Due to β1=α1, therefore [β1]OPT=[α1]OPT；Due to β2=α2, therefore [β2]OPT=[α2]OPT。
In the present embodiment, compare what solution obtained Value, obtain minimum value thereinIt is right
The first armful of roller initial position angle [α for being conducive to stable formation answered1]OPTFor α1,311,Angle is converted into be made as
61.0°；The corresponding third for being conducive to stable formation embraces roller initial position angle [α2]OPTFor α2,141,It is converted into
Angle system is 119.0 °.Because of β1=α1, so [β1]OPT=[α1]OPT=61.0 °, because of β2=α2, so [β2]OPT=
[α2]OPT=119.0 °.
In the present embodiment, namely as k=1, α1Value range beα2Value range be
U isV isIn the case where, solve the initial bit for obtaining being conducive to four armfuls of rollers of super large ring rolling and shaping stability
Angle setting ([α1]OPT,[α2]OPT,[β1]OPT,[β2]OPT) value be (61.0 °, 119.0 °, 61.0 °, 119.0 °).Four are carried out accordingly
The layout of a armful of roller is obtained in first armful of roller initial position angle α1For 61.0 °, second armful of roller initial position angle beta1For 61.0 °,
Three armfuls of roller initial position angle α2For 119.0 °, the 4th armful of roller initial position angle beta2It is 119.0 °.
Claims (4)
1. a kind of method that four for being conducive to super large ring roll off stable formation embrace roller layout, which is characterized in that detailed process is:
Step 1 determines four initial position angles for embracing roller:
It is first armful of roller, second armful of roller, third armful roller and the 4th armful of roller respectively that described four, which embrace roller,；Wherein, described first
It embraces roller and second armful of roller is respectively positioned on the super large ring close to driven roller side, the third embraces roller and the 4th armful of roller is respectively positioned on this and surpasses
Big ring is close to cone roller side, and C point is the contact position of first armful of roller external peripheral surface and ring billet external peripheral surface；C1Point is the
The contact position of two armfuls of roller external peripheral surfaces and ring billet external peripheral surface；D point is that third embraces roller external peripheral surface and ring billet outer circle
The contact position of perimeter surface；D1Point is the contact position of the 4th armful of roller external peripheral surface and ring billet external peripheral surface；
Described four embrace rollers respectively with the radial deformation area A of ring billetBaseBetween forming position angle: COrABaseThe angle of formation is first armful
Roller initial position angle α1；C1OrABaseThe angle of formation is second armful of roller initial position angle beta1；DOrABaseThe angle of formation is that third embraces roller
Initial position angle α2；D1OrABaseThe angle of formation is the 4th armful of roller initial position angle beta2；
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, third embraces roller and the 4th armful of roller also relates to coordinate system x-axis
Symmetrically, thus β1=α1, β2=α2；
In any cross section of the ring billet and ring heart OrBetween be line P；POrABaseThe angle of formation is cross-section location angle
Four layouts for embracing roller depend on the occurrence of every angle setting, are obtained by the optimization to determining each initial position angle
The final layout of roller is embraced to four；
The coordinate origin O is directed toward ring heart OrRectilinear direction be coordinate system x-axis；Coordinate origin O is crossed to be parallel in ring billet
The rectilinear direction of mandrel is coordinate system y-axis；It crosses coordinate origin O and makees to be coordinate system z-axis perpendicular to the rectilinear direction in the face xOy；Institute
The origin O for stating coordinate system is the radial deformation area A of ring billetBaseLocate the geometric center of cross section；
Step 2 proposes the foundation for the value for determining that four are embraced roller layout:
By four armfuls of determining two-way roll off stable formation criterion S of roller ultra-large type ring obtain four embrace rollers layout value according to
According to；Four armfuls of two-way roll off stable formation criterion S of roller ultra-large type ring are as follows:
In formula, RT baseFor radius in ring billet, FG2Roller power is embraced for third, H is ring billet height, and B is ring billet wall thickness, σsFor ring billet material
Yield stress；For Moment Influence function absolute value；
The Moment Influence function absolute valueExpression formula are as follows:
In formula (3),For first armful of roller influence function,Roller influence function is embraced for third；K is that bilateral embraces roller power
Proportionality coefficient；
It is describedExpression formula are as follows:
It is describedExpression formula are as follows:
The bilateral embraces the expression formula of roller power proportionality coefficient k are as follows:
In formula (6), FG1For first armful of roller power；
In formula (2), the maximum value of Moment Influence function absolute valueIt is to give first armful of roller initial position angle
α1, third embrace roller initial position angle α2, bilateral embrace roller power proportionality coefficient k under, Moment Influence function absolute value?
Cross-section location angleOn maximum value；
WhenWhen, the value of stable formation criterion S is minimum, obtains being conducive into
It is ([α that four of shape stability, which embrace roller initial position angle,1]OPT,[α2]OPT,[β1]OPT,[β2]OPT)；
Step 3 determines four value ranges for embracing roller initial position angle:
Four value ranges for embracing roller initial position angle are determined according to critical geometrical condition；
Identified first armful of roller initial position angle α1Value range be [α1min,α1max], third embraces roller initial position angle α2's
Value range is [α2min,α2max], second armful of roller initial position angle beta1Value range be [β1min,β1max], the 4th armful of roller is initial
Position angle β2Value range be [β2min,β2max]；
Step 4 determines the value for the initial position angle that four that are conducive to shape stability are embraced roller:
The determination is conducive to the value ([α of the initial position angle of four armfuls of rollers of shape stability1]OPT,[α2]OPT,[β1]OPT,
[β2]OPT) specific step is as follows:
I embraces roller power proportionality coefficient k by given bilateral, obtains
II equal part first embraces roller initial position angle α1Value range [α1min,α1max], obtain a series of decile value α1,i；Meanwhile
Equal part third embraces roller initial position angle α2Value range [α2min,α2max], obtain a series of decile value α2,j；
Roller initial position angle α is embraced by equal part first of u1The increment of value range, equal part first embrace roller initial position angle α1Value
Range [α1min,α1max], obtain α1,i；With obtained α1,iAs each position angle of first armful of roller, expression formula are as follows:
α1, i=α1,min+ (i-1) u i=1,2,3 ..., s (8)
I is that equal part first embraces roller initial position angle α1Value range [α1min,α1max] after a series of obtained α1The serial number of decile value,
S is α1,iSum, expression formula is
Roller initial position angle α is embraced by equal part third of v2The increment of value range, equal part third embrace roller initial position angle α2Value
Range [α2min,α2max], obtain α2,j；With obtained α2,jEach position angle of roller is embraced as third, expression formula is
α2, j=α2,min+ (j-1) v j=1,2,3 ..., t (10)
J is that equal part third embraces roller initial position angle α2A series of α obtained after value range2The serial number of decile value, t α2,jIt is total
Number, expression formula are
III successively solves α1=α1,iAnd α2=α2,jWhen?Maximum value
As first armful of roller initial position angle α1=α1,i, third armful roller initial position angle α2=α2,jWhen, by α1,i、α2,jIt is updated toIn, it obtains?The maximum value of upper acquirement is denoted asDescribedThe case where embracing roller power proportionality coefficient k for given bilateral
Under, α1Value is α1,iAnd α2Value is α2,jWhen, Moment Influence function absolute value?Upper acquirement
Maximum value；
I=1 is successively given, 2 ..., s, j successively take 1,2,3 ..., when t, obtained all α1And α2Valued combinations (α1,i,
α2,j) be expressed as
Work as α1=α1,iAnd α2=α2,jWhen?The maximum value of acquirement isObtained all α1And α2Valued combinations underIt is expressed as
IV compare it is allValue, find minimum value therein and be denoted asIt is describedCorresponding α1Value be conducive to shape stability first
Embrace roller initial position angle [α1]OPT, shouldThe α answered2Value be to be conducive to the third of shape stability
Embrace roller initial position angle [α2]OPT；Due to β1=α1, therefore [β1]OPT=[α1]OPT；Due to β2=α2, therefore [β2]OPT=[α2]OPT；
So far, obtain being conducive to the value of the initial position angle of four armfuls of rollers of shape stability.
2. being conducive to four methods for embracing roller layout of super large ring roll off stable formation as described in claim 1, which is characterized in that
In the foundation for the value for proposing to determine that four are embraced roller layout,It is obtained according to following steps: first will
Given bilateral embraces roller power proportionality coefficient k and is updated to Moment Influence function absolute valueIt is obtained in expression formulaIt shouldTo give the Moment Influence function absolute value under bilateral armful roller power proportionality coefficient k；Secondly
By first armful of roller initial position angle α1Each numerical value in value range embraces roller initial position angle α with third respectively2Value model
Interior each combinations of values is enclosed, is solved under all combinationsIt is finally all from what is obtainedIn find minimum value, be denoted as
3. being conducive to four methods for embracing roller layout of super large ring roll off stable formation as described in claim 1, which is characterized in that
The critical geometrical condition are as follows: do not interfered between ring billet between roller and driven roller with first armful and determine first armful of roller
Initial position angle α1Minimum value α1min；It is embraced with third and does not interfere determining third armful between roller and cone roller between ring billet
Roller initial position angle α2Maximum value be α2max；It is embraced with first armful of roller and third and is not interfered between ring billet really between roller
Fixed first armful of roller initial position angle α1Maximum value α1max；It is embraced with third and is not occurred between ring billet between roller and first armful of roller
Interfere and determines that third embraces roller initial position angle α2Minimum value α2min。
4. being conducive to four methods for embracing roller layout of super large ring roll off stable formation as described in claim 1, which is characterized in that
The determination four detailed processes for embracing roller position angle value range are:
I first is embraced not to be interfered between ring billet between roller and driven roller；
When the outer circumference surface of first armful of roller outer circumference surface and driven roller outer circumference surface and ring billet is tangent simultaneously to be contacted, it is formed by
The value of first armful of roller position angle is α1min, the α1minFor the value lower limit of first armful of roller position angle；
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, therefore β1=α1, β1min=α1min；
II third is embraced and is not interfered between ring billet between roller and cone roller；
When third embrace roller outer circumference surface and cone roller outer surface and ring billet outer circumference surface it is tangent simultaneously contact when, be formed by the
The value of the position angle of three armfuls of rollers is α2max, the α2maxThe value upper limit of roller position angle is embraced for third；
Since third armful roller and the 4th armful of roller are symmetrical about coordinate system x-axis, so β2=α2, β2max=α2max；
III first armfuls of rollers and third are embraced between roller and first armful of roller and third are embraced roller and do not done between ring billet respectively
It relates to；
When outer circumference surface and the third of first armful of roller embrace roller outer circumference surface and ring billet outer circumference surface three it is tangent simultaneously contact,
And when first armful of roller and third armful roller symmetrical about straight line l, the value for being formed by the position angle of first armful of roller is α1max, the α1max
For the value upper limit of first armful of roller position angle；The straight line l was the straight line that ring heart is parallel to coordinate system z-axis；
Since first armful of roller is symmetrical about coordinate system x-axis with second armful of roller, so β1=α1, β1max=α1max；
IV third is embraced between roller and first armful of roller and the third embraces roller and first armful of roller is not done between ring billet respectively
It relates to；
When outer circumference surface and the third of first armful of roller embrace roller outer circumference surface and ring billet outer circumference surface three it is tangent simultaneously contact,
And when first armful of roller and third armful roller symmetrical about straight line l, being formed by third and embracing the value of roller position angle is α2min, the α2minFor
Third embraces the value lower limit of the position angle of roller；The straight line l was the straight line that ring heart is parallel to z-axis；
Since third armful roller and the 4th armful of roller are symmetrical about coordinate system x-axis, so β2=α2, β2min=α2min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810130971.6A CN108372264B (en) | 2018-02-09 | 2018-02-09 | A method of being conducive to super large ring roll off stable formation four embrace roller layout |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810130971.6A CN108372264B (en) | 2018-02-09 | 2018-02-09 | A method of being conducive to super large ring roll off stable formation four embrace roller layout |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108372264A CN108372264A (en) | 2018-08-07 |
| CN108372264B true CN108372264B (en) | 2019-08-09 |
Family
ID=63017449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810130971.6A Active CN108372264B (en) | 2018-02-09 | 2018-02-09 | A method of being conducive to super large ring roll off stable formation four embrace roller layout |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108372264B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114535473A (en) * | 2022-02-21 | 2022-05-27 | 中国重型机械研究院股份公司 | Position control system and method for radial centering roller of ring rolling machine |
| CN116078960B (en) * | 2023-04-07 | 2023-06-02 | 山西天宝集团有限公司 | Ring rolling device suitable for T-shaped and L-shaped flange production and processing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4168598B2 (en) * | 2000-08-14 | 2008-10-22 | 三菱マテリアル株式会社 | Numerical simulation method, recording medium and program for rotational plastic working |
| CN202123173U (en) * | 2011-04-28 | 2012-01-25 | 张家港海陆环形锻件有限公司 | Arrangement structure for wrapping rolls in ring rolling mill |
| CN103567336A (en) * | 2013-11-22 | 2014-02-12 | 重庆大学 | Ring rolling mill for rolling production of seamless ring piece with special-shaped cross section |
| CN106294971B (en) * | 2016-08-05 | 2018-01-23 | 武汉理工大学 | Surely roller hydraulic design method is embraced in rolling for a kind of oversize ring control |
| CN106583609B (en) * | 2016-12-02 | 2018-12-25 | 西北工业大学 | A kind of weak separation ring rolling embraces the control method and system of roller power in the process |
| CN107133396B (en) * | 2017-04-27 | 2020-05-01 | 西北工业大学 | Method for determining motion space limit angle of encircling roller mechanism |
-
2018
- 2018-02-09 CN CN201810130971.6A patent/CN108372264B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108372264A (en) | 2018-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102489638B (en) | Radial and axial roll-forming method for large internal-stage annular piece | |
| CN108372264B (en) | A method of being conducive to super large ring roll off stable formation four embrace roller layout | |
| CN100574925C (en) | The method for rolling and shaping of titanium alloy taper ring forged piece | |
| CN101513705B (en) | Cold roller production process | |
| CN104785690B (en) | The forging method of GH4169 alloy pole | |
| CN107545107B (en) | Ring blank for rolling bearing ring with trapezoidal section and ring blank design method | |
| CN106294971B (en) | Surely roller hydraulic design method is embraced in rolling for a kind of oversize ring control | |
| CN109530607A (en) | A kind of 718plus forging special-shape ring manufacturing process | |
| CN108273880B (en) | A kind of spherical shape lightweight siding manufacturing process | |
| CN203843077U (en) | Large ring rolling machine | |
| CN104826968A (en) | GH4169 high-temperature alloy round rod finish forging method | |
| CN105806233B (en) | The system and method for shape measure and control in a kind of heavy type shell ring operation of rolling | |
| CN105568195A (en) | Preparation method for high-accuracy and high-strength titanium alloy seamless tubes | |
| CN108772513B (en) | The method for determining four armfuls of two-way roll off stable formation criterions of roller ultra-large type ring | |
| CN108097794A (en) | A kind of combination technological method of the progressive preform of electromagnetism and spinning finishing shape | |
| CN104550623B (en) | The integrated profiling forging method of the large-scale top cover end socket of nuclear reactor pressure container | |
| CN102172627B (en) | Composite insulator hardware helical groove skew rolling roll groove design method | |
| CN105290281B (en) | The production method of the nickeliferous ring forging of large thick-wall | |
| CN105583230A (en) | Large thick-wall special-shaped pipe cold roll forming method | |
| CN110479836A (en) | The spin forming method of equilateral polygon section part | |
| CN106734482A (en) | A kind of high intensity high accuracy small-angle method for manufacturing parts | |
| CN109570912A (en) | Titanium alloy ring rolling and bulging combined shaping method | |
| CN108994249A (en) | Large-scale cylindrical forged piece forges Rolling compund production technology | |
| CN105299038A (en) | Axial clearance collocation method for large-scale and super-large-scale four-row tapered roller bearings | |
| CN103433367B (en) | The Thermal expansion manufacturing process of titanium alloy square-section annular part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201221 Address after: 213000 No.1 Tianxin Road, Hexi industrial cluster, Daibu Town, Liyang City, Changzhou City, Jiangsu Province Patentee after: JIANGSU XIANGNENG SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 710072 No. 127 Youyi West Road, Shaanxi, Xi'an Patentee before: Northwestern Polytechnical University |