CN106563754A - Symmetrical forging formation method for double-body blades - Google Patents
Symmetrical forging formation method for double-body blades Download PDFInfo
- Publication number
- CN106563754A CN106563754A CN201611005641.1A CN201611005641A CN106563754A CN 106563754 A CN106563754 A CN 106563754A CN 201611005641 A CN201611005641 A CN 201611005641A CN 106563754 A CN106563754 A CN 106563754A
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- China
- Prior art keywords
- blade
- forging
- angle
- mould
- pair
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- 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
- B21K3/00—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like
- B21K3/04—Making engine or like machine parts not covered by sub-groups of B21K1/00; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots
Abstract
The invention discloses a symmetrical forging formation method for double-body blades comprising following steps: S1. blade forging drawings are designed according to blade part drawings and forging technical parameter requirements; S2. the forging angle [theta] of equilibrium is designed and forged according to the blade shape section string angle of the tip part, the middle part and the base part of the blade body; S3. an equivalent structural circle of a forging stock is designed at first according to the blade forging and the forging stock shape is modified according to forging requirements; S4. a blade forging die is designed according to the blade forging drawing and the forging angle [theta] of equivalent, wherein the die is provided with multiple pairs of cavities and two cavities of each pair are symmetrically distributed and mutually paralleled; S5. multiple pairs of symmetrically distributed blade forgings are forged and formed at once through a screw press. According to the method of the invention, by means of the principle of equilibrium of forces, the forging lateral mismatching force can be effectively reduced and the forging frequency is reduced so as to improve the forging formation precision of blade, increase forging efficiency and reduce production cost and finally the method can be applied in batch production of blades.
Description
Technical field
The invention belongs to Technology of Plastic Processing field, more particularly to a kind of symmetrical forging forming method of duplex form blade.
Background technology
Blade plays the important function of conversion energy as the core part of steam turbine, aero-engine and gas turbine.
The type face of blade is generally complicated three-dimensional torsional curved surface, adopts monomeric form die-forging forming mostly at present.However, the shaping side
Method can produce larger lateral mismatch power, cause leaf basin type face to offset with blade back type face, so as to reduce blade forging shaping
Precision, increases subsequent mechanical difficulty of processing, results even in final leaf product part and scraps because of off-dimension.Additionally,
Monomeric form die-forging forming method bring forge often, the series of problems such as low production efficiency, cost height, be unfavorable for leaf
The production in enormous quantities of piece.
The content of the invention
It is an object of the invention to provide a kind of symmetrical forging forming method of duplex form blade, it can effectively reduce side
To mismatch power and reduce and forge number of times, so as to improve blade forging forming accuracy, improve forging efficiency, reduce manufacturing cost, and
It is finally applied to the production in enormous quantities of blade.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of symmetrical forging forming method of duplex form blade, comprises the steps：
S1, design blade forging figure, determine the allowance of integral shroud, blade and the blade root of blade；
S2, determine blade forging angle of equilibrium θ, θ=(α1+α2+α3)/3, wherein, α1For the blade profile section string of a musical instrument of blade tip
Angle, α2For the blade profile section string of a musical instrument angle in the middle part of blade, α3For the blade profile section string of a musical instrument angle of blade root；
The area of section S, S=(S of the equivalent structure circle of S3, first calculating blade forging stock1+ B × H) × K, wherein, S1For blade
Forging area of section, B is blade forging section chord width size, and H is the amount of swelling for forging direction, and K places coefficient for material forming,
The blade root of blade and integral shroud part place COEFFICIENT K for 1.05～1.15, the blade portion of blade place COEFFICIENT K for 1.10～
1.20, then the equivalent structure circle of blade forging stock is modified as blade forging stock shape by forging demand；
S4, according to blade forging figure and blade forging angle of equilibrium θ, design blade forging mould, offer on the mould many
To die cavity, two die cavities of each pair are symmetrical and arranged in parallel；
S5, the blade forging stock consistent with die cavity quantity is respectively placed in corresponding die cavity, is driven using fly press
Mold is pushed, you can the multipair blade forging being symmetric of forging and molding.
By above-mentioned technical proposal, in step S4, each pair die cavity is arranged symmetrically along mold center's line.
By above-mentioned technical proposal, in step S4, a pair of die cavities are offered on the mould.
By above-mentioned technical proposal, in step S4, according to blade forging figure and blade forging angle of equilibrium θ, blade forging is designed
Mould：First using the mobile object function of UG softwares, the parallel distribution in the width direction of multipair blade forging is made, then using rotation
Object functionality, respectively by the spin balancing angle θ in the direction of the clock of in each pair blade forging, by each pair blade forging
Another spin balancing angle θ counterclockwise, finally completes the moulding of blade forging mould using Boolean calculation function.
The present invention, has the advantages that：Compared with traditional monomeric form die-forging forming method, the present invention can be once
The multipair blade forging being symmetric of forging and molding, the present invention on mould by opening up multipair die cavity, and each pair die cavity pair
Claim and be arranged in parallel, can thus utilize the equilibrium principle of power effectively reduces the lateral mismatch power produced in forging process, solution
Determine the blade profile offsetting problem caused because mismatch power is excessive, improve the forming accuracy of blade mould forging.Further, since adopting
With duplex form die-forging forming method, reduce and forge number of times, so as to effectively increase forging efficiency, reduce manufacturing cost,
Be conducive to the production in enormous quantities of blade.
Description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the dimensional structure diagram of embodiment of the present invention Leaf part；
Fig. 2 is the dimensional structure diagram of embodiment of the present invention Leaf forging；
Fig. 3 is the dimensional structure diagram of embodiment of the present invention Leaf forging stock；
Fig. 4 is the dimensional structure diagram that embodiment of the present invention Leaf forges mold；
Fig. 5 is the dimensional structure diagram of the lower mould of embodiment of the present invention Leaf forging；
Fig. 6 is the schematic cross-section of blade root mould in the embodiment of the present invention；
Fig. 7 is the schematic cross-section of blade root mould in the embodiment of the present invention；
Fig. 8 is the schematic cross-section of blade tip mould in the embodiment of the present invention；
Fig. 9 is the schematic cross-section of embodiment of the present invention middle period bizet mould；
Figure 10 is the shaping schematic diagram of the embodiment of the present invention；
In figure：1- integral shrouds；2- blades；3- blade roots；The blade tip of 4- blade forgings；The blade middle part of 5- blade forgings；
The blade root of 6- blade forgings；The blade root of 7- blade forgings；8- blade forging stocks；9- molds；The die cavity of 10- molds first；
The die cavity of 11- molds second；Mould under 12-；The die cavity of mould first under 13-；The die cavity of mould second under 14-.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
In the preferred embodiment, as shown in Fig. 1-Figure 10, a kind of symmetrical forging and molding side of duplex form blade
Method, comprises the steps：
S1, as shown in Figure 1 and Figure 2, designs blade forging figure, determines the allowance of integral shroud, blade and the blade root of blade,
Specifically, according to Fig. 1 blade part figure and blade forging design technical parameter require, determine blade part integral shroud 1,
Blade 2 and the allowance at the position of blade root 3, design obtains corresponding blade forging figure as shown in Figure 2, Fig. 2 Leaf forging
Blade middle part 5, the blade root 6 of blade forging and the leaf of blade forging including the blade tip 4, blade forging of blade forging
Root 7；
S2, the blade profile of blade are usually the curved surface of torsional variation, and the string of a musical instrument angle in each blade profile section is different, if blade
The X axis plane positioning forging plane specified on part drawing, it will usually cause to produce greatly lateral mismatch power in forging process,
And there is the not enough phenomenon of mould partial stowage, therefore, it is to reduce lateral mismatch power and prevent mould partial stowage not foot phenomenon
Generation, it is necessary to the design forging angle of equilibrium causes blade on mould in preferably direction, so the forging plane of determination
An angle, referred to as angle of equilibrium θ are had with former part coordinate system X-axis, blade forging angle of equilibrium θ can be determined by equation below, θ
=(α1+α2+α3)/3, wherein, α1For the blade profile section string of a musical instrument angle of the blade tip 4 of blade forging, α2For the blade of blade forging
The blade profile section string of a musical instrument angle at middle part 5, α3For the blade profile section string of a musical instrument angle of the blade root 6 of blade forging；
S3, as shown in figure 3, blade die forging piece belongs to the long-axis forging in numerous forging, it is different according to forging moulding
The coefficient that area of section and the shaping of each several part material requested are placed, first calculates the area of section of the equivalent structure circle of blade forging stock 8
S, S=(S1+ B × H) × K, wherein, S1For blade forging area of section, B is blade forging section chord width size, and H is forging side
To amount of swelling, K places coefficient for material forming, and the blade root of blade and integral shroud part place COEFFICIENT K for 1.05～1.15, leaf
The COEFFICIENT K that places of the blade portion of piece is 1.10～1.20, and the span for placing coefficient specifically saves to greatest extent material
Material, then the equivalent structure circle of blade forging stock is modified as blade forging stock shape by forging demand, wherein, as shown in figure 3,
Because blade profile chord width is larger, forging stock is easy in forming process to there is integrally bending because rigidity is not enough, so as to cause mould
The generation of tool lack of fill or metal folding phenomenon, therefore, need to be under conditions of deflection be met, by integral shroud, blade and blade root
The blank shape at position is designed to flat section；
S4, according to blade forging figure and blade forging angle of equilibrium θ, design blade forging mould, offer on the mould many
To die cavity, two die cavities of each pair are symmetrical and arranged in parallel, it is preferred that each pair die cavity is along the symmetrical cloth of mold center's line
Put, wherein, the design procedure of mould is the mobile object function of first using UG softwares, multipair blade forging is put down in the width direction
Row distribution, then using target rotation function, respectively by the spin balancing angle in the direction of the clock of in each pair blade forging
θ, by another spin balancing angle θ counterclockwise in each pair blade forging, finally completes leaf using Boolean calculation function
The moulding of piece forging mold, as shown in Figures 4 and 5, the respectively schematic diagram of the mold 9 of blade forging and lower mould 12, with mould
As a example by a pair of die cavities are offered on tool, mold 9 is provided with the first die cavity of mold 10 and the second die cavity of mold 11, lower mould
Corresponding the first die cavity of lower mould 13 and lower the second die cavity of mould 14 are provided with, Fig. 6-Fig. 9 is respectively mould in closed state,
The mold sections schematic diagram of integral shroud 4, blade tip 5, blade root 6 and blade root 7；
S5, as shown in Figure 10, the blade forging stock consistent with die cavity quantity is respectively placed in corresponding die cavity, using spiral
Forcing press drives mold to push, you can the multipair blade forging being symmetric of forging and molding.
The present invention by appropriate design blade forging mold cavity, the blade that forging and molding even number is symmetric
Forging, reduces and forges number of times and solve the problems, such as the blade profile offsetting caused because forging lateral mismatch power and being excessive, so as to
Blade forming accuracy is improved, production efficiency is improve, manufacturing cost is reduced.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or be converted,
And all these modifications and variations should all belong to the protection domain of claims of the present invention.
Claims (4)
1. the symmetrical forging forming method of a kind of duplex form blade, it is characterised in that comprise the steps：
S1, design blade forging figure, determine the allowance of integral shroud, blade and the blade root of blade；
S2, determine blade forging angle of equilibrium θ, θ=(α1+α2+α3)/3, wherein, α1For the blade profile section string of a musical instrument angle of blade tip, α2
For the blade profile section string of a musical instrument angle in the middle part of blade, α3For the blade profile section string of a musical instrument angle of blade root；
The area of section S, S=(S of the equivalent structure circle of S3, first calculating blade forging stock1+ B × H) × K, wherein, S1For blade forging
Area of section, B is blade forging section chord width size, and H is the amount of swelling for forging direction, and K places coefficient, blade for material forming
Blade root and integral shroud part place COEFFICIENT K for 1.05～1.15, the blade portion of blade place COEFFICIENT K for 1.10～
1.20, then the equivalent structure circle of blade forging stock is modified as blade forging stock shape by forging demand；
S4, according to blade forging figure and blade forging angle of equilibrium θ, design blade forging mould, offer multijugate type on the mould
Chamber, two die cavities of each pair are symmetrical and arranged in parallel；
S5, the blade forging stock consistent with die cavity quantity is respectively placed in corresponding die cavity, using fly press upper mould is driven
Tool is pushed, you can the multipair blade forging being symmetric of forging and molding.
2. method according to claim 1, it is characterised in that in step S4, each pair die cavity is along the symmetrical cloth of mold center's line
Put.
3. method according to claim 1 and 2, it is characterised in that in step S4, a pair of die cavities are offered on the mould.
4. method according to claim 1, it is characterised in that in step S4, it is flat according to blade forging figure and blade forging
Weighing apparatus angle θ, designs blade forging mould：First using the mobile object function of UG softwares, multipair blade forging is set to put down in the width direction
Row distribution, then using target rotation function, respectively by the spin balancing angle in the direction of the clock of in each pair blade forging
θ, by another spin balancing angle θ counterclockwise in each pair blade forging, finally completes leaf using Boolean calculation function
The moulding of piece forging mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005641.1A CN106563754A (en) | 2016-11-11 | 2016-11-11 | Symmetrical forging formation method for double-body blades |
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| CN201611005641.1A CN106563754A (en) | 2016-11-11 | 2016-11-11 | Symmetrical forging formation method for double-body blades |
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Cited By (6)
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| CN108246963A (en) * | 2017-12-07 | 2018-07-06 | 陕西宏远航空锻造有限责任公司 | A kind of forging method of aluminum blades |
| CN109175923A (en) * | 2018-08-14 | 2019-01-11 | 南通中能机械制造有限公司 | A kind of forging mould and movable vane innovative machining method of the simple die forging of wind motor leaf |
| CN109622855A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | The design method and device of a kind of mold, mold |
| CN112338128A (en) * | 2020-09-24 | 2021-02-09 | 沈阳中钛装备制造有限公司 | Method for manufacturing cabin door hinge |
| CN115788596A (en) * | 2022-10-24 | 2023-03-14 | 衡水中裕铁信装备工程有限公司 | Moving blade capable of reducing forging and pressing torque resistance, moving blade mold and mold design method |
| CN116237451A (en) * | 2023-05-11 | 2023-06-09 | 无锡市雪浪合金科技有限公司 | Forging forming and processing device and processing method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246963A (en) * | 2017-12-07 | 2018-07-06 | 陕西宏远航空锻造有限责任公司 | A kind of forging method of aluminum blades |
| CN109175923A (en) * | 2018-08-14 | 2019-01-11 | 南通中能机械制造有限公司 | A kind of forging mould and movable vane innovative machining method of the simple die forging of wind motor leaf |
| CN109622855A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | The design method and device of a kind of mold, mold |
| CN112338128A (en) * | 2020-09-24 | 2021-02-09 | 沈阳中钛装备制造有限公司 | Method for manufacturing cabin door hinge |
| CN112338128B (en) * | 2020-09-24 | 2022-07-12 | 沈阳中钛装备制造有限公司 | Method for manufacturing cabin door hinge |
| CN115788596A (en) * | 2022-10-24 | 2023-03-14 | 衡水中裕铁信装备工程有限公司 | Moving blade capable of reducing forging and pressing torque resistance, moving blade mold and mold design method |
| CN115788596B (en) * | 2022-10-24 | 2024-02-23 | 衡水中裕铁信装备工程有限公司 | Moving blade capable of reducing forging torque resistance, moving blade die and die design method |
| CN116237451A (en) * | 2023-05-11 | 2023-06-09 | 无锡市雪浪合金科技有限公司 | Forging forming and processing device and processing method thereof |
| CN116237451B (en) * | 2023-05-11 | 2023-07-18 | 无锡市雪浪合金科技有限公司 | Forging forming and processing device and processing method thereof |
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