CN106975722A - The flexible release method of the large scale special-shaped structural forging of closed die forging - Google Patents
The flexible release method of the large scale special-shaped structural forging of closed die forging Download PDFInfo
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- CN106975722A CN106975722A CN201710333432.8A CN201710333432A CN106975722A CN 106975722 A CN106975722 A CN 106975722A CN 201710333432 A CN201710333432 A CN 201710333432A CN 106975722 A CN106975722 A CN 106975722A
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- push rod
- forging
- large scale
- shaped structural
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- 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
- B21J13/08—Accessories for handling work or tools
- B21J13/14—Ejecting devices
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Abstract
The invention discloses a kind of flexible release method of the large scale special-shaped structural forging of closed die forging, its step is：First taking out upper forging die, to push rod applying power, top is in the large scale special-shaped structural forging in anvil tool upwards again, the compliant section of every push rod is compressed to elastic limit first and decrement is equal, when the ejecting force of a certain push rod is more than the forging in the frictional resistance of the position of this root push rod and mold cavity, the position of the forging loosens and produces certain displacement first, the push rod does not depart from forging, one or a few other push rod engender to be occurred and constantly progress at random with just that push rod identical situation, this process；When total ejecting force of all push rods is more than the total friction resistance of the forging, the forging integrally loosens, and stress is more uniformly by steady ejection die die cavity.This method can make forging demoulding process become more steady and not easily damaged, be mainly used in being stripped after the forging of the forging such as aircraft large-sized structural parts.
Description
Technical field
The present invention relates to a kind of forging demoulding method, a kind of more particularly to large scale special-shaped structural forging of closed die forging
Flexible release method.
Background technology
In the closed die forging metal material forming technology such as isothermal forging, hot forging, metal material is in a mold by outer masterpiece
Forging is configured to full of mold cavity with producing to flow, and metal produces friction in flow process with mold cavity surface, and
And new surface is formed, if the not good forging of lubrication usually tightly sticks together with mould, need to be stripped dress during forging demoulding
Forging could be ejected from mold cavity by putting.In the prior art, it is for example big for large scale special-shaped structural forging in irregular shape
Type aircraft structure, the push rod of the stripper apparatus used after closed die forging is carried out is by rigid material, forging demoulding
During need using at least more than 3 rigid push rod eject forging.
During the demoulding, when the ejecting force of a certain push rod is more than friction of the forging in the position of this root push rod and mold cavity
During resistance, the position of forging will first loosen and produce certain displacement, due to push rod be it is rigid, push rod and forging it
Between will produce certain interval, now this root push rod to the ejecting force of forging by pop-off vanishing；Meanwhile, stripper apparatus is simultaneously
It is not out of service, and power ejection forging is being continuously applied to, the ejecting force that the power newly applied and just that push rod disappear is by wink
Between be loaded on one or a few other push rod, the stress for causing one or a few other push rod is the increase of discontinuous, pulsed
, and by root appearance and the just similar situation of that push rod, this process will at random occur and constantly carry out, to the last
A piece push rod loosens forging top；And now stripper apparatus force ejection process is still being carried out, all push rods will produce displacement, very
It hurry up, wherein a certain push rod will be contacted with forging again, the position of forging and this root ejector pin contact will be ejected again
The effect of power, and the frictional resistance before now the frictional resistance at the position does not loosen far smaller than, an increasing one, which subtracts, causes ejection
The serious contrast and mismatch of power and frictional resistance, push rod will expand with forging again separate, other to be contacted again with forging
The situation similar with this root push rod can also occur by root in push rod, and process is gone down until forging is ejected mold cavity repeatedly like this.
It follows that when ejecting forging using rigid push rod, with being continuously increased for ejecting force, some positions can first pine
It is dynamic, depart from after stress again again, the position loosened afterwards can be acted on by gap or pulsed superposed force, cause forging integrally by
Power is unbalanced；And the ejecting force at the forging position after stress can not be well matched with frictional resistance again, then by mould type
The influence of the factors such as chamber depth, contact area size, degree of lubrication, the strength of materials, makes forging demoulding process unstable, easily makes
Occur into phenomenons such as forging deformation, warpage, local be collapsed, or even tears.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of flexible demoulding side of the large scale special-shaped structural forging of closed die forging
Method, is reached by the compliant section that flexible compliant section and every push rod are set up in the push rod upper end of the stripper apparatus used
It is equal to decrement during elastic limit, forging demoulding process is become more steady, it is not easily damaged.
In order to solve the above technical problems, the flexible release method of the large scale special-shaped structural forging of closed die forging of the present invention,
The stripper apparatus that this method is used includes being provided with through hole, the push rod at least 3 push rods and base, the anvil tool of the die forging
Lower end be fixed on the base and its upper end through anvil tool through hole and mold cavity in large scale special-shaped structure forging
The different bottom surfaces contact of part, the quantity of the anvil tool through hole is equal with the quantity of push rod, and the push rod is flexible by upper end
Compliant section and lower end there is rigid rigid section to constitute, the step of being stripped using the stripper apparatus is as follows：
The first step, first takes out the upper forging die covered in the large scale special-shaped structural forging, the large scale special-shaped structural forging
Do not loosen and remain in anvil tool；
Second step, starts the stripper apparatus, and the base runs parallel upwards applies thrust to every push rod, every top
Each through hole of the bar along anvil tool pushes up the bottom of large scale special-shaped structural forging upwards, and the compliant section of every push rod is compressed first
To elastic limit and decrement is equal；
3rd step, the base continues ceaselessly to apply thrust to every push rod, when the ejecting force of a certain push rod is more than
Large scale special-shaped structural forging is in the frictional resistance of the position of this root push rod and anvil tool mold cavity, large scale special-shaped structure forging
The position of part loosens and produces certain displacement first, and head on forging all the time with this root push rods of the location contacts will not
Depart from, one or a few other push rod engender to be occurred and not at random with just that push rod identical situation, this process
It is disconnected to carry out；
4th step, the base continues ceaselessly to apply thrust to every push rod, when total ejecting force of all push rods is more than
During the total friction resistance of large scale special-shaped structural forging, large scale special-shaped structural forging integrally occur loosen and with anvil tool mold cavity
The contact area on surface is gradually reduced, and large scale special-shaped structural forging is in the case of overall stress is more uniform by under steady eject
The mold cavity of forging die；
The gravity for the large scale special-shaped structural forging that the frictional resistance is born comprising the corresponding push rod and large scale special-shaped
The frictional force that structural forging is produced on the place position of the push rod and the mold cavity surface of anvil tool.
Preferably, the quantity of the push rod is 3~10, preferably 5, a diameter of 20mm~80mm；It is described
Push rod flexibility segment length is 30mm~100mm, the push rod rigid length and flexible segment length ratio ξ >=1.
As the first preferred structure of the stripper apparatus, the every push rod by the top surface of compliant section directly with greatly
The different bottom surfaces contact of type polymorphic structure forging, the cross-sectional area of every push rod is equal；
The length of the modulus of elasticity of every push rod compliant section, length and rigid section meets following condition：
The modulus of elasticity of every push rod compliant section is equal；
The equal length of every push rod compliant section；
The length of every push rod rigid section, the top surface of every push rod compliant section bottom surface different from large scale special-shaped structural forging
The distance of contact surface to die joint meet simultaneously：H11+h11=H12+h12=H13+h13=..., in formula, H11、H12、H13……
The length of respectively every push rod rigid section；h11、h12、h13... be respectively every push rod compliant section top surface with it is large scale special-shaped
Distance of the contact surface of the different bottom surfaces of structural forging to die joint.
As described second of preferred structure of stripper apparatus, between the push rod compliant section and large scale special-shaped structural forging
Cylindrical insert is provided with, every push rod passes through the bottoms directly different from large scale special-shaped structural forging of the insert on compliant section top surface
Face is contacted, and the cross-sectional area of each insert is equal, and the cross-sectional area of every push rod is equal；
The modulus of elasticity and length and the length of rigid section of every push rod compliant section, and the thickness of insert meet following bar
Part：
The modulus of elasticity of every push rod compliant section is equal；
The equal length of every push rod compliant section；
The equal length of every push rod rigid section；
The thickness of each insert, the contact surface of the top surface of each insert bottom surface different from large scale special-shaped structural forging is to dividing
The distance of die face is met simultaneously：δ1+h21=δ2+h22=δ3+h23=..., in formula, δ1、δ2、δ3... it is respectively each insert
Thickness；h21、h22、h23... the contact surface of the respectively top surface bottom surface different from large scale special-shaped structural forging of each insert is arrived
The distance of die joint.
As the third preferred structure of the stripper apparatus, the every push rod by the top surface of compliant section directly with greatly
Cross-sectional area between the different bottom surfaces contact of type polymorphic structure forging, each described push rod is unequal, but the horizontal stroke of single push rod
Sectional area is equal, and the contact surface of the top surface bottom surface different from large scale special-shaped structural forging of different push rod compliant sections is different；
The compliant section of different push rods and the length of rigid section, the modulus of elasticity of different push rod compliant sections meet following condition：
The equal length of different push rod compliant sections；
The length of different push rod rigid sections, the top surface bottom surface different from large scale special-shaped structural forging of different push rod compliant sections
The distance of contact surface to die joint meet simultaneously：H31+h31=H32+h32=H33+h33=..., in formula, H31、H32、H33……
The length of respectively different push rod rigid sections；h31、h32、h33... be respectively different push rod compliant sections top surface with it is large scale special-shaped
Distance of the contact surface of the different bottom surfaces of structural forging to die joint；
The modulus of elasticity of different push rod compliant sections should be met：
In formula, E1、E2、E3... it is respectively the modulus of elasticity of different push rod compliant sections；S1、S2、S3... it is respectively the horizontal stroke of different push rods
Sectional area.
Compared with prior art, beneficial effects of the present invention are as follows：
The flexible release method of the large scale special-shaped structural forging of closed die forging of the present invention, the stripper apparatus that this method is used
Its push rod by the flexible compliant section in upper end and lower end there is rigid rigid section to constitute.Described using push rod ejection
During forging, the compliant section of every push rod reaches elastic limit first and decrement is equal, and now push rod is in theory in rigidity
State；When the ejecting force of a certain push rod is more than forging in the frictional resistance of the position of this root push rod and mold cavity, forging
The position of part will first loosen and produce certain displacement, and with the compliant section of the push rod of the location contacts due to before by
Elastic compression elastic elongation will make push rod keep being contacted without producing all the time with forging with the loosening at the forging position
Gap, it is zero that ejecting force, which will reduce but not disappear with the change of decrement,；Meanwhile, stripper apparatus is not off operation, and
Power ejection forging is being continuously applied to, the power newly applied and the just ejecting force of that push rod reduction will gradually be loaded into other one
On root or several push rods；Similarly, since the elastic reaction of push rod compliant section, one or a few other push rod can also engender with
Just that push rod identical situation is without departing from forging, and the stress of one or a few other push rod is not in non-company
Continuous, the increased situation of pulsed, this process will at random occur and constantly carry out；With the increase of ejecting force, when total top of push rod
Exert oneself total friction resistance more than forging when, forging overall will loosen, forging and the contact area general on mold cavity surface
It is gradually reduced, frictional resistance also reduces therewith, ejecting force will be matched well with frictional resistance, makes to act on forging
Ejecting force and frictional resistance tend to balance, and forging is ejected mold cavity in the case of overall stress is more uniform, final real
The steady movement at each position when existing forging demoulding takes out；It is discontinuous, pulsed to avoid using push rod stress during the rigidity demoulding
Increase and ejecting force and frictional resistance are mismatched, and forging discontinuity equalization, when forging takes out it is easy by mould cavity depth,
The influence of the unfavorable factors such as contact area size, degree of lubrication, the strength of materials, makes forging demoulding process unstable, easily causes
The generation of the phenomenons such as forging deformation, warpage, local be collapsed, or even tear so that forging demoulding process become it is more steady and
Not easily damaged, forging demoulding process and quality of mold release have obtained very big improvement.
The present invention is arranged on the bottom of forging according to the size and features of shape of forging using 3~10 push rod distributions
Portion, it can be ensured that the ejection process of forging is steadily carried out.
Using three kinds of preferred structures design of the flexible stripper apparatus of the large scale special-shaped structural forging of above-mentioned closed die forging, equal energy
Ensure that the decrement of push rod compliant section is consistent, the ejecting force at each position of forging is evenly distributed.It is particularly preferred at second
In structure, insert is set between the push rod compliant section and the forging, push rod compliant section upper surface can be prevented to be damaged.
In above-mentioned all stripper apparatus structures, the diameter of the push rod is defined to 20mm~80mm, the push rod
Flexible segment length is defined to 30mm~100mm, the push rod rigid length and flexible segment length ratio ξ >=1, not only favorably
Installation is processed in equipment and forging is conveniently withstood, and enough support forces can be provided by rigid section.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
The schematic diagram for the first stripper apparatus that Fig. 1 is used by flexible release method of the present invention.
The schematic diagram for second of stripper apparatus that Fig. 2 is used by flexible release method of the present invention.
The schematic diagram for the third stripper apparatus that Fig. 3 is used by flexible release method of the present invention.
Embodiment
The schematic diagram for the first stripper apparatus that flexible release method of the present invention is used is as shown in figure 1, the demoulding
Device is mainly made up of 5 push rods 20 and base 30.Large scale special-shaped structural forging 50 is in by upper forging die 11 and lower forging after shaping
In the mold cavity that mould 12 is surrounded, have between upper forging die 11 and anvil tool 12 and 5 are provided with die joint 60, the anvil tool 12
Individual through hole, the lower end of 5 push rods 20 is fixed on through hole and large scale special-shaped knot of its upper end through anvil tool 12 on base 30
The different bottom surfaces contact of structure forging 50, compliant section 21 and lower end rigid material group that every push rod 20 is made up of upper end elastomeric material
Into rigid section 22 constitute, that is to say, that the compliant section 21 of every push rod 20 is flexible, and the rigid section 22 of every push rod 20 has
There is rigidity；Different bottom surfaces of the every push rod 20 by the top surface of compliant section 21 directly with large scale special-shaped structural forging 50 are contacted, often
The cross-sectional area of root push rod 20 is equal, i.e., the compliant section 21 of every push rod 20 is equal with the diameter of rigid section 22.
The length of the modulus of elasticity of the every compliant section 21 of push rod 20, length and rigid section 22 meets following condition：
The modulus of elasticity of the every compliant section 21 of push rod 20 is equal；
The equal length of the every compliant section 21 of push rod 20；
The length of the every rigid section 22 of push rod 20, top surface and the large scale special-shaped structural forging 50 of the every compliant section 21 of push rod 20
The distances of contact surface to die joint 60 of different bottom surfaces meet simultaneously：H11+h11=H12+h12=H13+h13=H14+h14=H15+
h15, in formula, H11、H12、H13、H14、H15The length of the respectively every rigid section 22 of push rod 20；h11、h12、h13、h14、h15Respectively
The top surface of the every compliant section 21 of push rod 20 and the contact surface of the different bottom surfaces of large scale special-shaped structural forging 50 to die joint 60 away from
From.
The schematic diagram for second of stripper apparatus that flexible release method of the present invention is used is as shown in Fig. 2 the demoulding
Device is to add cylinder between the compliant section 21 of push rod 20 of the first stripper apparatus and large scale special-shaped structural forging 50
Shape insert 40, different bottoms of the every push rod 20 by the insert 40 on the top surface of compliant section 21 directly from large scale special-shaped structural forging 50
Face is contacted, and the cross-sectional area of the insert 40 on the every top surface of 20 compliant section of push rod 21 is equal, i.e., the diameter of each insert 40 is phase
Deng, the cross-sectional area of every push rod 20 is equal, i.e., the compliant section 21 of every push rod 20 is equal with the diameter of rigid section 22.
The modulus of elasticity and length and the length of rigid section 22 of every compliant section 21 of push rod 20, and the thickness of insert 40 are expired
It is enough lower condition：
The modulus of elasticity of the every compliant section 21 of push rod 20 is equal；
The equal length of the every compliant section 21 of push rod 20；
The equal length of the every rigid section 22 of push rod 20.
The thickness of each insert 40, the contact with the different bottom surfaces of large scale special-shaped structural forging 50 of the top surface of each insert 40
Face is met simultaneously to the distance of die joint 60：δ1+h21=δ2+h22=δ3+h23=δ4+h24=δ5+h25, in formula, δ1、δ2、δ3、δ4、
δ5The thickness of respectively each insert 40；h21、h22、h23、h24、h25The top surface of respectively each insert 40 and large scale special-shaped structure
Distance of the contact surface of the different bottom surfaces of forging 50 to die joint 60.
The schematic diagram for the third stripper apparatus that flexible release method of the present invention is used is as shown in figure 3, described every
Different bottom surfaces of the root push rod 20 by the top surface of compliant section 21 directly with large scale special-shaped structural forging 50 are contacted, the stripper apparatus with
The difference of the first stripper apparatus is that the cross-sectional area between different push rods 20 is unequal, i.e., different push rods 20
Diameter it is unequal, but the cross-sectional area of single push rod 20 is equal, i.e., the compliant section 21 of single push rod 20 and rigid section 22 it is straight
Footpath is equal.The top surface and the contact surface of the different bottom surfaces of large scale special-shaped structural forging 50 of the different compliant sections 21 of push rod 20 are different,
Therefore need to select different elastomeric materials to make the compliant section 21 of different push rods 20.
The compliant section 21 of different push rods 20 and the length of rigid section 22, the modulus of elasticity of the different compliant sections 21 of push rod 20 are met
Following condition：
The equal length of the different compliant sections 21 of push rod 20；
The length of the different rigid sections 22 of push rod 20, top surface and the large scale special-shaped structural forging 50 of the different compliant sections 21 of push rod 20
The distances of contact surface to die joint 60 of different bottom surfaces meet simultaneously：H31+h31=H32+h32=H33+h33=H34+h34=H35+
h35, in formula, H31、H32、H33、H34、H35The length of the respectively different rigid sections 22 of push rod 20；h31、h32、h33、h34、h35Respectively
The top surface of the different compliant sections 21 of push rod 20 and the contact surface of the different bottom surfaces of large scale special-shaped structural forging 50 to die joint 60 away from
From.
The modulus of elasticity of the different compliant sections 21 of push rod 20 should be met：E1：E2：E3：E4： In formula, E1、E2、E3、E4、E5The modulus of elasticity of the respectively different compliant sections 21 of push rod 20；S1、S2、S3、S4、
S5The cross-sectional area of respectively different push rods 20.
In above-mentioned all stripper apparatus structures, when ejecting large scale special-shaped structural forging 50 using every push rod 20,
The decrement when compliant section 21 of every push rod 20 reaches elastic limit is equal, i.e.,：
△1=△2=△3=△4=△5, in formula, △1、△2、△3、△4、△5The respectively every compliant section 21 of push rod 20
Reach decrement during elastic limit.
In above-mentioned all stripper apparatus structures, according to the size and features of shape of forging, the push rod 20 can
Suitably to increase or decrease, the quantity of ordinary circumstance lower push rod 20 is constituted by 3~10, accordingly, the anvil tool 12 it is logical
Hole number is equal with the quantity of push rod 20, and present invention preferably employs 5 push rods 20.
In above-mentioned all stripper apparatus structures, the ratio of the every length of 20 rigid section of push rod 22 and the length of compliant section 21
ξ >=1, to ensure the stability of the demoulding, the every length of 20 compliant section of push rod 21 takes 30mm~100mm more appropriate, push rod 20
When diameter takes 20mm~80mm, processing is conducive to install and conveniently withstand large scale special-shaped structural forging 50.
The flexible release method of the large scale special-shaped structural forging of closed die forging of the present invention is carried out using above-mentioned stripper apparatus
The step of demoulding, is as follows：
Step one：Upper forging die 11 is first taken out, due to by the large scale special-shaped dead weight of structural forging 50 and the sticking to mould of anvil tool 12
Influence, large scale special-shaped structural forging 50 stayed in anvil tool 12, and silking is motionless.
Step 2：Start the stripper apparatus, base 30 runs parallel upwards applies thrust to every push rod 20, every top
Each through hole of the bar 20 along anvil tool 12 pushes up the bottom of large scale special-shaped structural forging 50, the compliant section 21 of every push rod 20 upwards
Elastic limit is compressed to first and decrement is equal.
Step 3：The base 30 continues ceaselessly to apply thrust to every push rod 20, when the ejection of a certain push rod 20
Power is more than large scale special-shaped structural forging 50 in the frictional resistance of the position of this root push rod 20 and the mold cavity of anvil tool 12, greatly
The position of type polymorphic structure forging 50 loosens and produces certain displacement first, and with this root push rod 20 of the location contacts
All the time forging is headed on without departing from the ejecting force of the push rod 20 reduces with the change of its decrement of compliant section 21；Base 30 is new
The power of application and the just ejecting force of that reduction of push rod 20 are then gradually loaded on one or a few other push rod 20；Its
Its one or a few push rod 20, which engenders, to be occurred and constantly enters at random with just that identical situation of push rod 20, this process
OK；
Step 4：The base 30 continues ceaselessly to apply thrust to every push rod 20, when total ejection of all push rods 20
When power is more than the total friction resistance of large scale special-shaped structural forging 50, large scale special-shaped structural forging 50 is overall to be loosened, large-scale different
Shape structural forging 50 and the contact area on the mold cavity surface of anvil tool 12 are gradually reduced, and frictional resistance also reduces therewith, effect
Ejecting force and frictional resistance in large scale special-shaped structural forging 50 are mutually matched and tended to balance, large scale special-shaped structural forging 50
The mold cavity of anvil tool 12 is steadily ejected in the case of overall stress is more uniform.
The gravity for the large scale special-shaped structural forging 50 that the frictional resistance is born comprising the corresponding push rod 20 and large-scale
The frictional force that polymorphic structure forging 50 is produced on the place position of the push rod 20 and the mold cavity surface of anvil tool 12.
Claims (7)
1. a kind of flexible release method of the large scale special-shaped structural forging of closed die forging, the stripper apparatus that this method is used is included at least
Through hole is provided with 3 push rods and base, the anvil tool of the die forging, the lower end of the push rod is fixed on the base and it
Upper end is contacted through the through hole of anvil tool with the different bottom surfaces of the large scale special-shaped structural forging in mold cavity, and the anvil tool leads to
The quantity in hole is equal with the quantity of push rod, and the push rod has rigid rigid section by the flexible compliant section in upper end and lower end
Constitute, it is characterised in that the step of being stripped using the stripper apparatus is as follows：
The first step, first takes out the upper forging die covered in the large scale special-shaped structural forging, and the large scale special-shaped structural forging is not loose
It is dynamic to remain in anvil tool；
Second step, starts the stripper apparatus, and the base runs parallel upwards applies thrust, every push rod edge to every push rod
The each through hole for anvil tool pushes up the bottom of large scale special-shaped structural forging upwards, and the compliant section of every push rod is compressed to bullet first
The property limit and decrement is equal；
3rd step, the base continues ceaselessly to apply thrust to every push rod, when the ejecting force of a certain push rod is more than large-scale
Polymorphic structure forging in the frictional resistance of the position of this root push rod and anvil tool mold cavity, large scale special-shaped structural forging
The position loosens and produces certain displacement first, and heading on forging all the time with this root push rods of the location contacts will not take off
From one or a few other push rod engender to be occurred and continuous at random with just that push rod identical situation, this process
Carry out；
4th step, the base continues ceaselessly to apply thrust to every push rod, when total ejecting force of all push rods is more than large-scale
During the total friction resistance of polymorphic structure forging, large scale special-shaped structural forging integrally occur loosen and with anvil tool mold cavity surface
Contact area be gradually reduced, large scale special-shaped structural forging is steadily ejected anvil tool in the case of overall stress is more uniform
Mold cavity；
The gravity and large scale special-shaped structure for the large scale special-shaped structural forging that the frictional resistance is born comprising the corresponding push rod
The frictional force that forging is produced on the place position of the push rod and the mold cavity surface of anvil tool.
2. the flexible release method of the large scale special-shaped structural forging of closed die forging according to claim 1, it is characterised in that described
The quantity of push rod is 3~10.
3. the flexible release method of the large scale special-shaped structural forging of closed die forging according to claim 2, it is characterised in that described
The quantity of push rod is 5.
4. the flexible release method of the large scale special-shaped structural forging of closed die forging according to claim 1, it is characterised in that described
A diameter of 20mm~80mm of push rod, the flexible segment length of the push rod is 30mm~100mm, the push rod rigid length and soft
Ratio ξ >=1 of property segment length.
5. the flexible release method of the large scale special-shaped structural forging of the closed die forging according to any one of Claims 1 to 4, it is special
Levy and be, the every push rod is contacted by the top surface bottom surfaces directly different with large scale special-shaped structural forging of compliant section, every
The cross-sectional area of push rod is equal；
The length of the modulus of elasticity of every push rod compliant section, length and rigid section meets following condition：
The modulus of elasticity of every push rod compliant section is equal；
The equal length of every push rod compliant section；
The length of every push rod rigid section, the top surface of every push rod compliant section bottom surface different from large scale special-shaped structural forging connects
Contacting surface is met simultaneously to the distance of die joint：H11+h11=H12+h12=H13+h13=..., in formula, H11、H12、H13... respectively
For the length of every push rod rigid section；h11、h12、h13... it is respectively the top surface and large scale special-shaped structure of every push rod compliant section
Distance of the contact surface of the different bottom surfaces of forging to die joint.
6. the flexible release method of the large scale special-shaped structural forging of the closed die forging according to any one of Claims 1 to 4, it is special
Levy and be, cylindrical insert is provided between the push rod compliant section and large scale special-shaped structural forging, every push rod passes through soft
Property section top surface on insert bottom surfaces directly different with large scale special-shaped structural forging contact, the cross-sectional area of each insert is equal,
The cross-sectional area of every push rod is equal；
The modulus of elasticity and length and the length of rigid section of every push rod compliant section, and the thickness of insert meet following condition：
The modulus of elasticity of every push rod compliant section is equal；
The equal length of every push rod compliant section；
The equal length of every push rod rigid section；
The thickness of each insert, the contact surface of the top surface of each insert bottom surface different from large scale special-shaped structural forging to die joint
Distance meet simultaneously：δ1+h21=δ2+h22=δ3+h23=..., in formula, δ1、δ2、δ3... it is respectively the thickness of each insert
Degree；h21、h22、h23... be respectively each insert top surface bottom surface different from large scale special-shaped structural forging contact surface to divide
The distance of die face.
7. the flexible release method of the large scale special-shaped structural forging of the closed die forging according to any one of Claims 1 to 4, it is special
Levy and be, the every push rod is contacted by the top surface bottom surfaces directly different with large scale special-shaped structural forging of compliant section, described
Cross-sectional area between each push rod is unequal, but the cross-sectional area of single push rod is equal, the top surface of different push rod compliant sections with
The contact surface of the different bottom surfaces of large scale special-shaped structural forging is different；
The compliant section of different push rods and the length of rigid section, the modulus of elasticity of different push rod compliant sections meet following condition：
The equal length of different push rod compliant sections；
The length of different push rod rigid sections, the top surface bottom surfaces different from large scale special-shaped structural forging of different push rod compliant sections connects
Contacting surface is met simultaneously to the distance of die joint：H31+h31=H32+h32=H33+h33=..., in formula, H31、H32、H33... respectively
For the length of different push rod rigid sections；h31、h32、h33... it is respectively the top surface and large scale special-shaped structure of different push rod compliant sections
Distance of the contact surface of the different bottom surfaces of forging to die joint；
The modulus of elasticity of different push rod compliant sections should be met：Formula
In, E1、E2、E3... it is respectively the modulus of elasticity of different push rod compliant sections；S1、S2、S3... it is respectively the transversal of different push rods
Area.
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| CN107695233A (en) * | 2017-11-24 | 2018-02-16 | 中山复盛机电有限公司 | Facilitate the floating installation and mould of cavity plate de- material |
| CN110315707A (en) * | 2018-03-30 | 2019-10-11 | 住友重机械工业株式会社 | The knock-pin method of adjustment of injection (mo(u)lding) machine |
| CN113084064A (en) * | 2021-04-14 | 2021-07-09 | 西安三角防务股份有限公司 | Large titanium alloy deep cavity long box rib forging, die and forming method thereof |
| CN115383087A (en) * | 2022-09-14 | 2022-11-25 | 吉林大华机械制造有限公司 | Flywheel shell machining device |
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| CN201950756U (en) * | 2011-03-16 | 2011-08-31 | 湖南吉丰汽车零部件有限公司 | Novel mandrel mechanism |
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| CN107695233A (en) * | 2017-11-24 | 2018-02-16 | 中山复盛机电有限公司 | Facilitate the floating installation and mould of cavity plate de- material |
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