CN106238549B - A kind of surface of revolution part spin-on process on the front and back installation side of band - Google Patents
A kind of surface of revolution part spin-on process on the front and back installation side of band Download PDFInfo
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- CN106238549B CN106238549B CN201610755563.0A CN201610755563A CN106238549B CN 106238549 B CN106238549 B CN 106238549B CN 201610755563 A CN201610755563 A CN 201610755563A CN 106238549 B CN106238549 B CN 106238549B
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- spinning
- circular arc
- supination
- rotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
Abstract
The present invention discloses a kind of surface of revolution part spin-on process on the front and back installation side of band, Step 1: by size before forging Vehicle Processing to rotation；Step 2: carrying out spinning to interlude, by part big end back side vehicle at step surface, while mould tire end face step is removed, make the side back side is installed greatly and be bonded with mould tire end face, holding axis of workpiece is parallel with mould tire axis；The chamfering at part small end outer circular edge；Step 3: using spinning face as Vehicle Processing benchmark, finishing processing is carried out to non-spinning section；Spinning elongation is set to be stablized by controlling wall thickness reduction amount；It is tested by theory analysis and spinning, it is determined that the shape face structure and positioning compression mode of spinning block tire make spinning elongation along desired direction change, to prevent shape area distortion；Part processing is breached by the traditional thought of large and small end positioning, one has been started using curved surface as the new approaches of machining benchmark, has realized the coordinating and unifying between spinning shape face and machining surface.
Description
【Technical field】
The invention belongs to Field of Aviation Manufacturing, belong to mechanical processing scope, and it is bent to be related to a kind of revolution on the front and back installation side of band
Surface parts spin-on process.
【Background technology】
Aeroengine combustor buring room casing inner sleeve main part is formed by forward and backward two sections by electron beam welding, two sections of hairs
Base is all GH141 forging.Design requirement carries out spinning reinforcing to inner sleeve leading portion middle section, to improve intensity, hardness and resist tired
Labor performance.
Due to the particularity of design of part and the inhomogeneities of rotary pressure deformation, inner sleeve leading portion rotary pressure deformation amount is very big, causes
The deformation of non-spinning section is also very big.Due to the technical data for lacking forging blank spinning experience and providing a reference, former technique does not have
Get the rotary pressure deformation feature of this structure clear, spinning quality is very unstable, occurs the fracture of spinning section, the chap of spinning face, wall frequently
A series of problems, such as thick overproof and eccentric, ellipse, spinning face axile displacement, also occur once in a while because of inner sleeve leading portion rotary pressure deformation
Component is overproof caused by big or scraps, and mass loss is very big.
1) shear spinning of GH141 forging, in China's aero-engine manufacturing industry or a new project, in the past its
Its unit, respectively in processes such as forging, mechanical processing, heat treatment, shear spinnings, all occurs in various degree when processing the part
Cross seminess.
2) part dimension head bias is the another problem of current spinning, cause after part combination can not Combined machining, even
Component is caused to scrap, such as Fig. 1 and Fig. 2.
3) shape surface profile is poor
It is 0.5mm that design drawing, which requires spinning surface profile, and practical minimum clearance is 0, and maximal clearance is 3mm, and part is overproof
It uses.
4) variation of spinning elongation greatly, is unable to control inside and outside installation side allowance distribution
The forward and backward wall thickness of spinning is all qualified, but spinning elongation differs greatly, practical to differ 2-6mm, causes small after spinning
End flanges side front or reverse side Vehicle Processing surplus are insufficient.
【Invention content】
Present invention aims at the surface of revolution part spin-on process that side is installed before and after a kind of band of proposition, solve inner sleeve spinning
The problems such as crackle, machined surface profile degree are big and spinning elongation is unstable, realizes the processing request of spare part.
The present invention is realized by following technical solutions：
A kind of surface of revolution part spin-on process on the front and back installation side of band, includes the following steps：
Step 1: by size before forging Vehicle Processing to rotation
Known supination length, supination wall thickness, supination arc radius and rotation anterior wall thickness, calculate length before rotation；Rotation before regulation rotation
Pressure section shape is circular arc, arc radius before given rotation, and length subtracts spinning elongation equal to supination length before revolving, and spinning section is indulged
Section is circular curve, and the volume of circular arc camber revolving body is solved using calculus methods, and circular arc camber revolving body volume calculates
Formula is as follows：
Wherein：
α=tan-1[(x-x0)/(y-y0)]
In formula：X is the abscissa of any on circular arc, and y is the ordinate of any on circular arc, x0For the horizontal seat in the circular arc center of circle
Mark, yoFor the ordinate in the circular arc center of circle, R is arc radius, and b is curved surface wall thickness, and α is the line that the circular arc center of circle is a little arrived on circular arc
With the angle of y-axis, x1For the abscissa of circular arc starting point, x2For the abscissa of circular arc terminal；
Before rotation, the calculation formula of supination volume it is as follows：
Spinning segment body product before rotation：
Wherein：
α=tan-1[(x-x01)/(y-y01)]
In formula：X is the abscissa of any on the preceding circular arc of rotation, and y is the ordinate of any on the preceding circular arc of rotation, x01For circular arc before rotation
The abscissa in the center of circle, yo1For the ordinate in the circular arc center of circle before rotation, R1For arc radius before rotation, b1To revolve front curve wall thickness, α is rotation
A little to the angle of the line and y-axis in the circular arc center of circle, x on preceding circular arc1For the abscissa of supination circular arc starting point, x2For circular arc before rotation
The abscissa of terminal, h are spinning elongation；
Center coordinate of arc x before rotation01And y01It is solved by following equations group：
(x1+h-x01)2+(y1-y01)2=R1 2
(x2-x01)2+(y2-y01)2=R1 2
Supination spinning segment body accumulates：
Wherein：
α=tan-1[(x-x02)/(y-y02)]
It establishes an equation by Volume conservation law：VBefore rotation=VSupination
In formula：X is the abscissa of any on supination circular arc, and y is the ordinate of any on supination circular arc, x02For supination circular arc
The abscissa in the center of circle, yo2For the ordinate in the supination circular arc center of circle, R2For supination arc radius, b2For supination curved surface wall thickness, α is rotation
A little to the angle of the line and y-axis in the circular arc center of circle, x on preceding circular arc1For the abscissa of supination circular arc starting point, x2For supination circular arc
The abscissa of terminal；
Approximatioss is incremented by using the small step-length of spinning elongation and solves given wall thickness reduction amount Δb=b2-b1Corresponding rotation
Press elongation h；
According to above-mentioned parameter by forging Vehicle Processing to rotation before size；
Step 2: carrying out spinning to interlude
By part big end back side vehicle at step surface, while mould tire end face step is removed, makes that the side back side and mould tire end are installed greatly
Face paste is closed, and keeps axis of workpiece parallel with mould tire axis；The chamfering at part small end outer circular edge uses ring at installation side greatly
Shape pressing plate is pressed and tight bolt fixes on big installation side with mould tire；
Using the method for shunting time spinning, per one section of spinning, spinning roller is made to be exited along the tangential of the segment endpoint；
Step 3: using spinning face as Vehicle Processing benchmark, finishing processing is carried out to non-spinning section.
Further, when carrying out spinning to interlude, spinning section is divided into 4 sections of spinning.
Further, the step 2,30 ° of the chamfering at part small end outer circular edge.
The invention has the advantages that：
1) calculus methods are used, calculating is programmed by high-level language, has found spinning elongation and wall thickness reduction
Relationship between amount under relationship guidance herein, makes spinning elongation be stablized by controlling wall thickness reduction amount.
2) previous a time spinning theory has been broken, by shunting time spinning, has reduced the extension resistance of material, solve
Breakage problem caused by spinning drag is excessive improves shape face quality.
3) it is tested by theory analysis and spinning, it is determined that the shape face structure and positioning compression mode of spinning block tire make rotation
Pressure stretch is grown along desired direction change, to prevent shape area distortion.
4) part processing is breached by the traditional thought of large and small end positioning, has started one using curved surface as machining benchmark
New approaches realize the coordinating and unifying between spinning shape face and machining surface.
The present invention can be used for the processing in aeroengine combustor buring room casing inner sleeve leading portion spun type face.It is also applied for space flight hair
Motivation and other industries have the processing of the spinning part of similar structures requirement.
【Description of the drawings】
Fig. 1 cuts outward turning pressure surface situation
Fig. 2 cuts inward turning pressure surface situation
Fig. 3 wall thickness reductions are extended with spinning
Fig. 4 circular curve revolving body volume schematic diagram calculations
The forward and backward spinning section shape and size variation of Fig. 5 spinning
The shuntings Fig. 6 time spinning
Fig. 7 big end positioning compression modes
Fig. 8 parts and mould tire overall structure
Fig. 9 is using spinning face as Vehicle Processing benchmark
【Specific implementation mode】
The present invention is described in further detail in the following with reference to the drawings and specific embodiments：
The surface of revolution part spin-on process on the front and back installation side of band of the present invention is as follows：
First by size before forging Vehicle Processing to rotation, spinning then is carried out to interlude, smart car is carried out to non-spinning section later
Processing.
Part spinning is a kind of flow turning.According to Volume conservation law, to ensure the shape and ruler of part after spinning
It is very little, it must just get spinning section wall thickness reduction and shape, the changing rule of diameter and length clear, and then determine the shape of blank before spinning
Shape and size.
As shown in figure 3, wall thickness reduction is extended with spinning.
Known supination length, supination wall thickness and supination arc radius, design is again given rotation anterior wall thickness, it is also necessary to determine rotation
Two sizes of length before preceding arc radius and rotation.In order to simplify technique and facilitate calculating, it is specified that spinning section shape is still before rotation
Circular arc, and the concrete numerical value of the preceding arc radius of given rotation, length dimension needs solve before being left with a rotation in this way.Cause
For, length=supination length-spinning elongation before revolving, and spinning elongation is caused by wall thickness reduction, as long as so finding out rotation
Press the variation relation between elongation and wall thickness reduction amount, so that it may in the hope of spinning elongation.
The vertical section of spinning section is circular curve, and circular curve revolving body volume schematic diagram calculation is as shown in figure 4, using micro-
Integration method solves the volume of circular arc camber revolving body, show that volume calculation formula is as follows after derivation：
Wherein：
α=tan-1[(x-x0)/(y-y0)]
After defining spinning Duan Xuanqian, supination geometric dimension symbol respectively by Fig. 4, list before revolving, the calculating of supination volume
Formula is as follows：
Spinning segment body product before rotation：
Wherein：
α=tan-1[(x-x01)/(y-y01)] here, center coordinate of arc x before rotation01And y01It is variable, by following equations
Group solves：
(x1+h-x01)2+(y1-y01)2=R1 2
(x2-x01)2+(y2-y01)2=R1 2
Supination spinning segment body accumulates：
Wherein：
α=tan-1[(x-x02)/(y-y02)]
It establishes an equation by Volume conservation law：VBefore rotation=VSupination
It is incremented by approximatioss solution using Programming with Pascal Language such as FORTRON, and using the small step-length of spinning elongation, so that it may to calculate
Go out given wall thickness reduction amount Δb=b2-b1Corresponding spinning elongation h.
It presses wall thickness intermediate value and selectes and revolve anterior wall thickness 2.4mm, supination wall thickness 2.05mm, the spinning elongation being calculated is
12mm.Supination length, which subtracts 12mm, can obtain blank length before rotation.Fig. 5 is that the forward and backward spinning section shape and size of spinning become
Change.
4, shunting time spinning
As shown in fig. 6, using inward turning scheme, part spinning section aft terminal cannot generate displacement, be bonded always with core model, and
Part spinning section forward terminal can only generate axial displacement, gradually close to core model, until being bonded completely with core model.It is wanted in order to above-mentioned
It asks, using the method for shunting time spinning, spinning section is divided into 4 sections, per one section of spinning, spinning roller is made to be moved back along the tangential of the segment endpoint
Go out.During exiting, rotating part wall thickness is not thinned, but spinning roller still applies pressure to spinning section, and spinning section shape is made to change, and
Push small end axial movement.
5, positioning compression mode of the part on spinning block tire
Part big end back side vehicle removes mould tire end face step at step surface, makes to install the side back side and mould tire end face greatly
Fitting keeps axis of workpiece parallel with mould tire axis.In this way but also compressing reliably, prevent spinning from returning heap and extending to big end,
Advantageously ensure that the surface accuracy at big end switching.
Fig. 7 big end positioning compression modes
As shown in fig. 7, reducing the frictional resistance between small end outer circle and inward turning mould tire, small end deforms in spinning process, peace
Rim turns up, and outer circle contacts friction with mould tire endoporus, and spinning elongation resistance is made to increase.In order to reduce elongation resistance, and make part
Dismounting is easy, 1 × 30 ° of the chamfering at part small end outer circular edge.On the other hand, in order to prevent counter-rotary-ing phenomenon caused by install greatly
Side displacement increases the pressing force on big installation side, thicker annular pressing plate and more hold-down bolt is used at installation side greatly.Such as
Fig. 8 is part and mould tire overall structure.
7 Vehicle Processing selection of reference frame
As shown in figure 9, using spinning face as Vehicle Processing benchmark, part is oval after spinning, and large and small end face has warpage change
Shape, the axis out of plumb with spinning shape face, so machining benchmark after spinning cannot with the end face on forward and backward installation side and endoporus,
Excircle orientation, be using spinning face as positioning datum.Therefore, the positioning surface of turning attachment is set according to the structure size of inward turning mould tire
Meter, the positioning states of outward turning pressure surface are like part in inward turning mould tire, and the fitting effect of benchmark is good, and positioning stablity is reliable.
This positioning method ensures the verticality of the large end face and spinning shape face axis of Vehicle Processing to the maximum extent, can effectively eliminate inclined head
Phenomenon.
The economic benefit of the technology：
Combustion box inner sleeve is the load part on engine, spinning strengthen the intensity that can improve part, hardness and
Anti-fatigue performance, the breakthrough of this technology, bottom eliminate the spare part caused by spinning process is unstable and scrap phenomenon.
Part scrap rate is 4.3% before improving, and rejection rate is 0 after improvement, if by producing per year based on 100, whole year can save latent
Economic loss：Ten thousand yuan of (4.3%-0%) × 100 × 230815.93=99.
Specific implementation method：
1 technological process
Process 5：Spinning
Process 10：Vehicle benchmark
Process 15：Vehicle microcephaly installs side
Process 20：Vehicle major part installs side
2 process
◆ process 5：Spinning
1. clamping spinning clamp, centering center, then compress.
2. clamping parts are compressed with cover board.
3. clamping simultaneously adjusts idler wheel.
4. startup program spinning.
5. dismantling part.
◆ process 10：Vehicle benchmark
1. clamping turning attachment, centering compress.
2. being positioned with part spun type face, compressing component.
3. the big installation side end face of Vehicle Processing part.
4. dismantling part.
◆ process 15：Vehicle microcephaly installs side
1. on clamping parts to lathe.
2. level symmetrical 4 points of centering spinning face, compressing component.3. the small installation side end face of Vehicle Processing part and outer circle.
4. dismantling part
◆ process 20：Vehicle major part installs side
1. on clamping parts to lathe.
2. looking for small installation side outer circle, compressing component
3. the big installation side end face of Vehicle Processing and outer circle.
4. dismantling part.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation mode of the present invention is only limitted to this, for those of ordinary skill in the art to which the present invention belongs, is not taking off
Under the premise of from present inventive concept, several simple deduction or replace can also be made, all shall be regarded as belonging to the present invention by institute
Claims of submission determine scope of patent protection.
Claims (3)
1. a kind of surface of revolution part spin-on process on the front and back installation side of band, it is characterised in that include the following steps：
Step 1: by size before forging Vehicle Processing to rotation
Known supination length, supination wall thickness, supination arc radius and rotation anterior wall thickness, calculate length before rotation；Spinning section before regulation rotation
Shape is circular arc, gives arc radius before rotation, and length subtracts spinning elongation, the vertical section of spinning section equal to supination length before revolving
For circular curve, the volume of circular arc camber revolving body, circular arc camber revolving body volume calculation formula are solved using calculus methods
It is as follows：
Wherein：
α=tan-1[(x-x0)/(y-y0)]
In formula：X is the abscissa of any on circular arc, and y is the ordinate of any on circular arc, x0For the abscissa in the circular arc center of circle, yoFor
The ordinate in the circular arc center of circle, R are arc radius, and b is curved surface wall thickness, and α is on circular arc a little to the line in the circular arc center of circle and y-axis
Angle, x1For the abscissa of circular arc starting point, x2For the abscissa of circular arc terminal；
Before rotation, the calculation formula of supination volume it is as follows：
Spinning segment body product before rotation：
Wherein：
α=tan-1[(x-x01)/(y-y01)]
In formula：X is the abscissa of any on the preceding circular arc of rotation, and y is the ordinate of any on the preceding circular arc of rotation, x01For the circular arc center of circle before rotation
Abscissa, yo1For the ordinate in the circular arc center of circle before rotation, R1For arc radius before rotation, b1To revolve front curve wall thickness, α is circle before rotation
A little to the angle of the line and y-axis in the circular arc center of circle, x on arc1For the abscissa of supination circular arc starting point, x2For circular arc terminal before rotation
Abscissa, h be spinning elongation；
Center coordinate of arc x before rotation01And y01It is solved by following equations group：
(x1+h-x01)2+(y1-y01)2=R1 2
(x2-x01)2+(y2-y01)2=R1 2
In formula：y1For the ordinate of circular arc starting point before rotation, y2For the ordinate of circular arc terminal before rotation；
Supination spinning segment body accumulates：
Wherein：
β=tan-1[(x-x02)/(y-y02)]
It establishes an equation by Volume conservation law：VBefore rotation=VSupination
In formula：X is the abscissa of any on supination circular arc, and y is the ordinate of any on supination circular arc, x02For the supination circular arc center of circle
Abscissa, yo2For the ordinate in the supination circular arc center of circle, R2For supination arc radius, b2For supination curved surface wall thickness, β justifies for supination
A little to the angle of the line and y-axis in the circular arc center of circle, x on arc1For the abscissa of supination circular arc starting point, x2For supination circular arc terminal
Abscissa；
Approximatioss is incremented by using the small step-length of spinning elongation and solves given wall thickness reduction amount Δb=b2-b1Corresponding spinning is stretched
Long amount h；
According to above-mentioned parameter by forging Vehicle Processing to rotation before size；
Step 2: carrying out spinning to interlude
By part big end back side vehicle at step surface, while mould tire end face step is removed, makes that the side back side and mould tire end face patch are installed greatly
It closes, keeps axis of workpiece parallel with mould tire axis；The chamfering at part small end outer circular edge, using annular pressure at installation side greatly
Plate and hold-down bolt fix on big installation side with mould tire；
Using the method for shunting time spinning, per one section of spinning, spinning roller is made to be exited along the tangential of the segment endpoint；
Step 3: using spinning face as Vehicle Processing benchmark, finishing processing is carried out to non-spinning section.
2. the surface of revolution part spin-on process on the front and back installation side of band according to claim 1, it is characterised in that：To centre
When Duan Jinhang spinning, spinning section is divided into 4 sections of spinning.
3. the surface of revolution part spin-on process on the front and back installation side of band according to claim 1, it is characterised in that：The step
Rapid two, 30 ° of the chamfering at part small end outer circular edge.
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| CN201610755563.0A CN106238549B (en) | 2016-08-29 | 2016-08-29 | A kind of surface of revolution part spin-on process on the front and back installation side of band |
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| CN201610755563.0A CN106238549B (en) | 2016-08-29 | 2016-08-29 | A kind of surface of revolution part spin-on process on the front and back installation side of band |
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| CN103624129A (en) * | 2012-08-23 | 2014-03-12 | 中国航天科技集团公司长征机械厂 | Spinning forming new technology of shell part with inner and outer teeth |
| CN104209708A (en) * | 2014-08-29 | 2014-12-17 | 常熟市鼓风机有限公司 | Processing method of axial flow fan casing |
| CN104507597A (en) * | 2012-07-04 | 2015-04-08 | 蒂森克虏伯钢铁欧洲股份公司 | Method for producing connecting element for transmitting rotational movements |
| CN104755188A (en) * | 2012-11-12 | 2015-07-01 | 日本斯频德制造株式会社 | Plastic working method and spinning machine using same |
| CN105363869A (en) * | 2015-11-25 | 2016-03-02 | 北京有色金属研究总院 | Spinning method for high-precision large-size thin-wall aluminum alloy pipes |
| CN105537449A (en) * | 2016-01-26 | 2016-05-04 | 湖北三江航天江北机械工程有限公司 | Spinning machining method for aluminium alloy thin-walled revolution body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8468698B2 (en) * | 2009-07-15 | 2013-06-25 | Honda Motor Co., Ltd. | Spinning method |
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2016
- 2016-08-29 CN CN201610755563.0A patent/CN106238549B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507597A (en) * | 2012-07-04 | 2015-04-08 | 蒂森克虏伯钢铁欧洲股份公司 | Method for producing connecting element for transmitting rotational movements |
| CN103624129A (en) * | 2012-08-23 | 2014-03-12 | 中国航天科技集团公司长征机械厂 | Spinning forming new technology of shell part with inner and outer teeth |
| CN104755188A (en) * | 2012-11-12 | 2015-07-01 | 日本斯频德制造株式会社 | Plastic working method and spinning machine using same |
| CN104209708A (en) * | 2014-08-29 | 2014-12-17 | 常熟市鼓风机有限公司 | Processing method of axial flow fan casing |
| CN105363869A (en) * | 2015-11-25 | 2016-03-02 | 北京有色金属研究总院 | Spinning method for high-precision large-size thin-wall aluminum alloy pipes |
| CN105537449A (en) * | 2016-01-26 | 2016-05-04 | 湖北三江航天江北机械工程有限公司 | Spinning machining method for aluminium alloy thin-walled revolution body |
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Address after: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee after: AECC AVIATION POWER CO., LTD. Address before: Weiyang Xu Jia Wan 710021 Shaanxi city of Xi'an Province Patentee before: AVIC AVIATION ENGINE CORPORATION PLC |