CN107609264A - Method is determined without the plug radially critical geometry amount of feeding of swaging - Google Patents
Method is determined without the plug radially critical geometry amount of feeding of swaging Download PDFInfo
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Abstract
Method is determined without the plug radially critical geometry amount of feeding of swaging the present invention relates to one kind, its step is：（1）It is determined that swage deformation and the maximum distortion position of inside and outside circle of being swaged without plug；（2）It is determined that swaged the relation between inside and outside circle maximum deformation quantity and radial feeds without plug；（3）Determine to meet to swage the critical geometry of quality according to the geometry deformation swaged without plug；（4）Determine to swage the radially critical geometry amount of feeding without plug according to critical geometry；（5）Calculation process without the critical geometry amount of feeding of radial direction in plug rotary swaging process.The present invention proposes a kind of to swage radially critical geometry feeding method for determination of amount without plug, it is to improve circularity quality inside and outside axle product of swaging without the plug radially determination of the critical geometry amount of feeding of swaging, circularity mass defect, the important means of swage fold defect and crack defects of inner surface etc. inside and outside prevention.
Description
Technical field
Method is determined without the plug radially critical geometry amount of feeding of swaging the present invention relates to one kind, it is especially a kind of to be used to pass through
Without geometry deformation in plug rotary swaging process shaping is swaged to determine that variable-section variable wall thickness bears the hollow central siphon of complex load most
The method of the big geometry amount of feeding, belong to no plug radial feeds of swaging and determine method and technology field.
Background technology
Technique of swaging has continuous fibre flow, shaping surface quality is good, is easily formed variable-section variable thickness structure, effect
The advantages such as rate height, stock utilization height are most advanced, technical merit highests in car transmission shaft manufacture and barrel manufacture into
One of shape method.Axle of swaging swage shaping include the wall thickness undergauge such as the uiform section containing plug, the drawing forming process for subtracting wall thickness and
Variable-section variable wall thickness without plug, undergauge increase the Radial Flow process of wall thickness.Rotary swaging process containing plug is due to the support base of plug
Material is inside and outside to be pressurized, and circularity of swaging is easily guaranteed that, usually single pass radial feed；Without plug swage blank outer surface be pressurized, it is interior
Surface tension and it is natural shaped, variable-section variable wall thickness structure can be shaped, it is more using the multi-pass radial feed mode successively decreased.Nothing
Plug swage radial feeds determination be swage feeding technological parameter determine emphasis and difficult point.
Not only influence to swage circularity quality inside and outside axle, had an effect in no plug rotary swaging process without plug radial feeds of swaging
Folding, the defect of swaging such as surface cracks, particularly can have a strong impact on axle production of swaging without the swage fold defect of inner circle of plug
Static strength, fatigue strength and the fatigue life of product.Therefore, it is necessary to by without the elastoplasticity geometry deformation in plug rotary swaging process come
Determine the critical amount of feeding of radial direction maximum geometry in rotary swaging process, the swage determination of the radially critical geometry amount of feeding of no plug is to carry
Height is swaged circularity quality inside and outside axle product, circularity mass defect, swage fold defect and crack defects of inner surface etc. inside and outside prevention
Important means.
The content of the invention
The present invention be to provide for it is a kind of determine method without the plug radially critical geometry amount of feeding of swaging, no plug is swaged radially
The determination of the critical geometry amount of feeding is to improve circularity quality inside and outside axle product of swaging, circularity mass defect, folding of swaging inside and outside prevention
Fold the important means of defect and crack defects of inner surface etc..
To achieve the above object, the technical scheme is that：It is a kind of to be swaged radially critical geometry amount of feeding determination side without plug
Method, comprise the following steps：
（1）It is determined that swage deformation and the maximum distortion position of inside and outside circle of being swaged without plug
Without in plug rotary swaging process, mould radial motion forges the blank for axle of swaging, and the variable-section variable wall thickness of blank is by mould knot
Structure determines；Blank is also needed to carry out circle-feeding after radial feed, and no plug is swaged and handed between radial feed and circle-feeding
For progress；After the structure snd size of mould and blank determine, swage deformation and the maximum distortion position of blank can pass through rotation
Forging radial feed determines, no plug swage inside and outside circle swage deformation and maximum distortion position is emulated by PLASTIC FINITE ELEMENT ANALYSIS
Method, in the case where radial feeds of being swaged without plug are certain, emulation determine without plug swage inside and outside circle swage deformation and
Maximum distortion position；
（2）It is determined that swaged the relation between inside and outside circle maximum deformation quantity and radial feeds without plug
Without the relation that plug is swaged between inside and outside circle maximum deformation quantity and radial feeds by PLASTIC FINITE ELEMENT ANALYSIS emulation mode,
By given different radial feed, emulation draws and swaged inside and outside circle maximum deformation quantity without plug accordingly, and then sets up nothing
The change curve relation that plug is swaged between inside and outside circle maximum deformation quantity and radial feeds；
（3）Determine to ensure to swage the critical geometry of quality according to the geometry deformation swaged without plug
Swaged without plug and different geometry deformation shapes is presented in different radial feeds, with the gradual increasing of radial feeds
Add, no plug swages deformation presentation by justifying --- to convex --- to critical shape --- again to three kinds of shapes of spill, convex deformation
Boundary shape with spill deformation is the critical geometry swaged without plug, and it is guarantee and satisfaction swages quality without plug
Critical geometry；
（4）Determine to swage the radially critical geometry amount of feeding without plug according to critical geometry
Using PLASTIC FINITE ELEMENT ANALYSIS emulation mode, the deformed shape and deformation behaviour swaged by studying and calculating no plug, imitate
True no plug maximum that inside and outside circle is in when swaging critical geometry of swaging that obtains is swaged and deflection and swaged geometry without plug
Corresponding relation between critical radial feeds；
（5）Calculation process without the critical geometry amount of feeding of radial direction in plug rotary swaging process
Without plug rotary swaging process be a blank internal-and external diameter constantly reduce, the ever-increasing process of wall thickness, with without plug
Progress in rotary swaging process, the external diameter of blank constantly reduce, and the contact area of blank and mould can constantly change, and cause to revolve
Forging deformed shape and maximum distortion position can change with the reduction of blank external diameter, and the critical geometry of the radial direction that no plug is swaged enters
It can also be changed to amount with the reduction of blank external diameter.Therefore, every time is required for without the radial feeds that plug is swaged
Recalculate and determine, it is necessary to recalculate swage deformed shape and maximum deformation quantity, to determine critical geometry and critical change
Shape amount, it is last that the radial direction that back pass is swaged without plug is determined according to the relation swaged between deflection and radial feeds of swaging
The critical geometry amount of feeding.
Swage axle blank be the wall thickness such as uiform section seamless steel pipe, external diameter 37mm, wall thickness 5mm, length are
357mm, the material property of blank are less than for yield strength less than 400MPa, tensile strength less than 630MPa, case hardness
190HV。
In step 1, emulated by PLASTIC FINITE ELEMENT ANALYSIS, it is typically 0.3mm without plug radial feeds to provide, and is used
Mould and blank there is symmetry, the swage deformation of swaging of inside and outside circle of no plug also shows symmetry, and symmetry axis is
0 °, 45 °, 90 °, 135 ° of straight lines；Without plug swage inside and outside circle maximum distortion position at 45 °, 135 °, 225 °, 315 °,
Minimal deformation position is at 0 °, 90 °, 180 °, 270 °.
In step 2, emulated by PLASTIC FINITE ELEMENT ANALYSIS, provide no plug radial feeds be respectively 0.2,0.3mm,
When 0.5mm, 0.6,0.7mm, establish the corresponding inside and outside circle that no plug is swaged under different radial feeds and swage the song of maximum deformation quantity
Line relation, mathematical interpolation is recycled to solve the inside and outside circle maximum deformation quantity under any radial feed with the method extrapolated.
In step 4, by elastic plastic element method, it is 0.55mm that can obtain the blank of axle of swaging in radial feeds
When, critical geometry is presented in deformation of swaging substantially, and now, maximum deformation quantity is about 0.33mm, and no plug geometry of swaging is critical
Radial feeds 0.55mm.
The beneficial effects of the invention are as follows：
The present invention's determines method without the plug critical geometric vertical amount of feeding of swaging, and is by being moulded without the bullet in plug rotary swaging process
Property geometry deformation determine the critical amount of feeding of radial direction maximum geometry of axle of swaging, solve no plug and swage radially critical geometry feeding
Method for determination of amount, the radially determination of the critical geometry amount of feeding of swaging of no plug is to improve circularity quality inside and outside axle product of swaging,
Circularity mass defect, the important means of swage fold defect and crack defects of inner surface etc. inside and outside prevention.
Brief description of the drawings
Fig. 1 is to be swaged feeding process, mould and blank contact condition figure without plug；
（a）Front view,（b）Side view,（c）Mould and blank contact condition；
Fig. 2 is the inside and outside circle deformation and ultimate deformation position view swaged without plug；
（a）Cylindrical deformation and ultimate deformation position,（b）Inner circle deforms and ultimate deformation position；
Graphs of a relation of the Fig. 3 between inside and outside circle maximum distortion and radial feeds；
（a）Graph of a relation between cylindrical maximum distortion and radial feeds,（b）Between inner circle maximum distortion and radial feeds
Graph of a relation；
Fig. 4 is deformed shape schematic diagram of swaging；
（a）Convex,（b）Critical shape,（c）Spill；
Fig. 5 is that the critical geometry amount of feeding of the radial direction without plug rotary swaging process of the present invention determines the FB(flow block) of method.
Embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Example：
Swaged with certain car constant-speed Universal drive jackshaft as object, material 25CrMo4, it is seamless by the wall thickness such as uiform section
Steel pipe passes through to be fabricated without plug and being swaged containing plug.Without in plug rotary swaging process, the radial motion of mould 1 forges blank 2, becomes
Section becomes wall thickness and determined by mould structure, and blank 2 does circumferential movement and carries out circle-feeding, and radial feed and circle-feeding alternately enter
OK, no plug is swaged feeding process and mould structure such as Fig. 1（a）,（b）,（c）It is shown.
Swage axle original blank be the wall thickness such as uiform section seamless steel pipe, external diameter 37mm, wall thickness 5mm, minor axis length
For 357mm.The material property of blank is that yield strength is small less than 630MPa, case hardness less than 400MPa, tensile strength respectively
In 190HV.
What is used determines method without the plug critical geometric vertical amount of feeding of swaging, and comprises the following steps：
1st, determine without plug swage inside and outside circle swage deformation and maximum distortion position
Without in plug rotary swaging process, mould radial motion forges the blank for axle of swaging, and the variable-section variable wall thickness of blank is by mould knot
Structure determines；Blank is also needed to carry out circle-feeding after radial feed, and no plug is swaged and handed between radial feed and circle-feeding
For progress.After the structure snd size of mould and blank determine, swage deformation and the maximum distortion position of blank can pass through rotation
Forging radial feed determines, no plug swage inside and outside circle swage deformation and maximum distortion position is emulated by PLASTIC FINITE ELEMENT ANALYSIS
Method, in the case where radial feeds of being swaged without plug are certain, emulation determine without plug swage inside and outside circle swage deformation and
Maximum distortion position；
For this example, the material property of the structure snd size of mould, the structure snd size of original blank and blank is led to fixing
PLASTIC FINITE ELEMENT ANALYSIS emulation is crossed, it is typically 0.3mm without plug radial feeds to provide, and no plug is swaged the swaging of inside and outside circle
A such as Fig. 2 at B and maximum distortion at minimal deformation（a）,（b）Shown, in order to which process is convenient, inside and outside circle deformation is amplification 10 in Fig. 2
Result again.
Due to the symmetry of mould and blank, no plug swage inside and outside circle swage deformation also show symmetry,
Symmetry axis is 0 °, 45 °, 90 °, 135 ° of straight lines.Without plug swage inside and outside circle maximum distortion position 45 °, 135 °,
At 225 °, 315 °, minimal deformation position is at 0 °, 90 °, 180 °, 270 °.
2nd, the relation swaged without plug between inside and outside circle maximum deformation quantity and radial feeds is determined
It can be solved without the relation that plug is swaged between inside and outside circle maximum deformation quantity and radial feeds by theoretical and emulation, by
Swaged complexity in without plug, theory solves extremely difficult, even may.The present invention proposes to emulate by PLASTIC FINITE ELEMENT ANALYSIS
Method, by given different radial feed, emulation draws and swaged inside and outside circle maximum deformation quantity without plug accordingly, and then establishes
Play the change curve relation swaged without plug between inside and outside circle maximum deformation quantity and radial feeds.
For this example, under the given structure snd size of mould, the structure snd size of blank and material property, pass through
PLASTIC FINITE ELEMENT ANALYSIS emulates, when to provide no plug radial feeds be respectively 0.2,0.3mm, 0.5mm, 0.6,0.7mm, foundation
The curved line relation such as Fig. 3 for the corresponding inside and outside circle maximum deformation quantity swaged without plug under different radial feeds（a）,（b）It is shown.For
This example, by the curved line relation for the corresponding inside and outside circle maximum deformation quantity swaged without plug under different radial feeds, utilize number
Interpolation or the method for extrapolation can solve the inside and outside circle maximum deformation quantity under any radial feed.
3rd, the critical geometry for quality of being swaged according to the geometry deformation determination swaged without plug
Without plug swage the structure snd size of mould, the structure snd size of blank, material mechanical characteristic determine after, no plug rotation
It is related to radial feeds to forge deformed shape.Swaged without plug and different geometry deformation shapes is presented in different radial feeds
Shape, and with the gradual increase of radial feeds, the deformation of swaging of no plug are presented by justifying --- to convex --- to critical
Shape --- again to three kinds of shapes of spill, such as Fig. 4（a）,（b）,（c）Shown, for the ease of observing deformation of swaging in figure, deflection is put
It is big 10 times.Swage when being deformed into convex, be not in fold defect in follow-up rotary swaging process；Swage when being deformed into spill, after
Fold defect occurs in continuous swage, and has a strong impact on product quality of swaging.The boundary of convex and spill is to face without what plug was swaged
Boundary's geometry, it is to ensure the critical geometry of quality of being swaged without plug.
4th, determine to swage the radially critical geometry amount of feeding without plug according to critical geometry
Swage the critical geometry of inside and outside circle according to without plug, with reference to mould structure and size, the size of blank and blank
Material property, the maximum deformation quantity under the critical geometry of inside and outside circle can be obtained；Recycle without plug swage inside and outside circle maximum
Relation between deflection and radial feeds, no plug may finally be obtained and swaged the critical radial feeds of geometry.Due to nothing
Plug is swaged complexity, and the maximum deformation quantity that theory is solved under the critical geometry of inside and outside circle is extremely difficult, even may.This
Invention proposes to utilize PLASTIC FINITE ELEMENT ANALYSIS emulation mode, by studying and calculating deformed shape and the deformation spy that no plug is swaged
Sign, emulation obtain no plug maximum that inside and outside circle is in when swaging critical geometry of swaging and swage and deflection and swaged without plug
Corresponding relation between the critical radial feeds of geometry.
For this example, by elastic plastic element method, original blank can be obtained when radial feeds are 0.55mm,
Critical geometry is presented in deformation of swaging substantially, and now, maximum deformation quantity is about 0.33mm, and no plug is swaged the critical radial direction of geometry
Amount of feeding 0.55mm.
5th, the calculation process without the critical geometry amount of feeding of radial direction in plug rotary swaging process
Without plug rotary swaging process be a blank internal-and external diameter constantly reduce, the ever-increasing process of wall thickness, with without plug
Progress in rotary swaging process, the external diameter of blank constantly reduce, and the contact area of blank and mould can constantly change, and cause to revolve
Forging deformed shape and maximum distortion position can change with the reduction of blank external diameter, and the critical geometry of the radial direction that no plug is swaged enters
It can also be changed to amount with the reduction of blank external diameter.Therefore, every time is required for without the radial feeds that plug is swaged
Recalculate and determine, it is necessary to recalculate swage deformed shape and maximum deformation quantity, to determine critical geometry and critical change
Shape amount, it is last that the radial direction that back pass is swaged without plug is determined according to the relation swaged between deflection and radial feeds of swaging
The critical geometry amount of feeding.The calculation process of the critical geometry amount of feeding of radial direction without plug rotary swaging process is as shown in Figure 5.
Claims (5)
1. a kind of determine method without the plug radially critical geometry amount of feeding of swaging, it is characterised in that comprises the following steps：
（1）It is determined that swage deformation and the maximum distortion position of inside and outside circle of being swaged without plug
Without in plug rotary swaging process, mould radial motion forges the blank for axle of swaging, and the variable-section variable wall thickness of blank is by mould knot
Structure determines；Blank is also needed to carry out circle-feeding after radial feed, and no plug is swaged and handed between radial feed and circle-feeding
For progress；After the structure snd size of mould and blank determine, swage deformation and the maximum distortion position of blank can pass through rotation
Forging radial feed determines, no plug swage inside and outside circle swage deformation and maximum distortion position is emulated by PLASTIC FINITE ELEMENT ANALYSIS
Method, in the case where radial feeds of being swaged without plug are certain, emulation determine without plug swage inside and outside circle swage deformation and
Maximum distortion position；
（2）It is determined that swaged the relation between inside and outside circle maximum deformation quantity and radial feeds without plug
Without the relation that plug is swaged between inside and outside circle maximum deformation quantity and radial feeds by PLASTIC FINITE ELEMENT ANALYSIS emulation mode,
By given different radial feed, emulation draws and swaged inside and outside circle maximum deformation quantity without plug accordingly, and then sets up nothing
The change curve relation that plug is swaged between inside and outside circle maximum deformation quantity and radial feeds；
（3）Determine to meet to swage the critical geometry of quality according to the geometry deformation swaged without plug
Swaged without plug and different geometry deformation shapes is presented in different radial feeds, with the gradual increasing of radial feeds
Add, no plug swages deformation presentation by justifying --- to convex --- to critical shape --- again to three kinds of shapes of spill, convex deformation
Boundary shape with spill deformation is the critical geometry swaged without plug, and it is guarantee and satisfaction swages quality without plug
Critical geometry；
（4）Determine to swage the radially critical geometry amount of feeding without plug according to critical geometry
Using PLASTIC FINITE ELEMENT ANALYSIS emulation mode, the deformed shape and deformation behaviour swaged by studying and calculating no plug, imitate
True no plug maximum that inside and outside circle is in when swaging critical geometry of swaging that obtains is swaged and deflection and swaged geometry without plug
Corresponding relation between critical radial feeds；
（5）Calculation process without the critical geometry amount of feeding of radial direction in plug rotary swaging process
Without plug rotary swaging process be a blank internal-and external diameter constantly reduce, the ever-increasing process of wall thickness, with without plug
The progress of rotary swaging process, the external diameter of blank constantly reduce, and the contact area of blank and mould can constantly change, and cause to swage
Deformed shape and maximum distortion position can change with the reduction of blank external diameter, the critical geometry feeding of the radial direction that no plug is swaged
Amount can also change with the reduction of blank external diameter；
Therefore, every time is required for recalculating and determined, it is necessary to recalculate change of swaging without the radial feeds that plug is swaged
Shape shape and maximum deformation quantity, critical geometry and critical strain amount are determined, it is last according to deflection and the radial direction of swaging of swaging
Relation between the amount of feeding determines back pass without the critical geometry amount of feeding of radial direction that plug is swaged.
2. no plug according to claim 1 is swaged, the radially critical geometry amount of feeding determines method, it is characterised in that：It is described
Swage axle blank be the wall thickness such as uiform section seamless steel pipe, external diameter 37mm, wall thickness 5mm, length 357mm, blank
Material property is that yield strength is less than 400MPa, tensile strength is less than 630MPa, case hardness is less than 190HV.
3. no plug according to claim 1 is swaged, the radially critical geometry amount of feeding determines method, it is characterised in that：Step
In 1, emulated by PLASTIC FINITE ELEMENT ANALYSIS, it is typically 0.3mm without plug radial feeds to provide, used mould and blank
With symmetry, the swage deformation of swaging of inside and outside circle of no plug also shows symmetry, symmetry axis is 0 °, 45 °, 90 °,
135 ° of straight lines；Without plug swage inside and outside circle maximum distortion position at 45 °, 135 °, 225 °, 315 °, minimal deformation position
Put at 0 °, 90 °, 180 °, 270 °.
4. no plug according to claim 1 is swaged, the radially critical geometry amount of feeding determines method, it is characterised in that：Step
In 2, emulated by PLASTIC FINITE ELEMENT ANALYSIS, it is respectively 0.2,0.3mm, 0.5mm, 0.6,0.7mm to provide no plug radial feeds
When, establish the corresponding inside and outside circle that no plug is swaged under different radial feeds and swage the curved line relation of maximum deformation quantity, then profit
The inside and outside circle maximum deformation quantity under any radial feed can be solved with the method for mathematical interpolation and extrapolation.
5. no plug according to claim 1 is swaged, the radially critical geometry amount of feeding determines method, it is characterised in that：Step
In 4, by elastic plastic element method, the blank for axle of swaging can be obtained when radial feeds are 0.55mm, deformation of swaging
Substantially critical geometry is presented, now, maximum deformation quantity is about 0.33mm, and no plug is swaged the critical radial feeds of geometry
0.55mm。
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| CN201710811971.8A CN107609264B (en) | 2017-09-11 | 2017-09-11 | Method for determining radial critical geometric feed amount of mandrel-free rotary swaging |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113836656A (en) * | 2021-09-14 | 2021-12-24 | 临海伟星新型建材有限公司 | Calculation method for reducing amount of fluorine-silicon modified PERT barrier liner pipe by adopting finite element algorithm |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7197906B2 (en) * | 2005-06-28 | 2007-04-03 | Sumitomo Metal Industries, Ltd. | Cold rolling process for metal tubes |
| CN105772621A (en) * | 2016-01-18 | 2016-07-20 | 上海理工大学 | Determination method for coreless rod rotary forging radial feeding process parameters of car universal transmission shaft |
| CN106734839A (en) * | 2017-01-04 | 2017-05-31 | 上海理工大学 | There is the method for defect in a kind of prevention variable-section variable wall thickness jackshaft rotary swaging process |
-
2017
- 2017-09-11 CN CN201710811971.8A patent/CN107609264B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7197906B2 (en) * | 2005-06-28 | 2007-04-03 | Sumitomo Metal Industries, Ltd. | Cold rolling process for metal tubes |
| CN105772621A (en) * | 2016-01-18 | 2016-07-20 | 上海理工大学 | Determination method for coreless rod rotary forging radial feeding process parameters of car universal transmission shaft |
| CN106734839A (en) * | 2017-01-04 | 2017-05-31 | 上海理工大学 | There is the method for defect in a kind of prevention variable-section variable wall thickness jackshaft rotary swaging process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113836656A (en) * | 2021-09-14 | 2021-12-24 | 临海伟星新型建材有限公司 | Calculation method for reducing amount of fluorine-silicon modified PERT barrier liner pipe by adopting finite element algorithm |
| WO2023039932A1 (en) * | 2021-09-14 | 2023-03-23 | 临海伟星新型建材有限公司 | Method for calculating diameter reduction amount of fluorosilicone-modified pert barrier liner pipe by using finite element algorithm |
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