CN106040811B - A kind of major diameter bellows vibration shaping device and method - Google Patents
A kind of major diameter bellows vibration shaping device and method Download PDFInfo
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- CN106040811B CN106040811B CN201610551838.9A CN201610551838A CN106040811B CN 106040811 B CN106040811 B CN 106040811B CN 201610551838 A CN201610551838 A CN 201610551838A CN 106040811 B CN106040811 B CN 106040811B
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- pipe
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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
- B21D15/00—Corrugating tubes
- B21D15/04—Corrugating tubes transversely, e.g. helically
- B21D15/06—Corrugating tubes transversely, e.g. helically annularly
Abstract
The present invention discloses a kind of major diameter bellows vibration shaping device and method, and its building mortion is mainly made up of mandrel, ripple core, terminal pad, shaping wheel, support frame, vibrating device etc..Corrugated core die sleeve is loaded on mandrel, and connects into a unitary mould by mandrel flange in the bottom and end terminal pad.Pipe is set in outside ripple core, and left and right end clamping jaw is provided with two ends of pipe, and shaping wheel is distributed on the outside of pipe.After clamping jaw clamps pipe, start to rotate around axle center, shape and applies vibrational excitation on wheel, then shaping wheel carries out radial direction and axial feed to pipe.The comprehensive existing each forming process of the present invention, the frictional force between metal pipe billet and shaping dies is effectively reduced by using vibration excitation device, and when applying dither excitation, it can reduce metal pipe billet resistance of deformation, suppress the generation and development of pipe corrugation and rupture, ensure the accuracy of big wave height ripple pipe size, make the surface smoothness of Forming Workpiece increase.
Description
Technical field
The present invention relates to the processing of metal pipe material, more particularly to a kind of major diameter corrugated pipe forming device and method.
Background technology
Metal bellows can be used as compensation and damper element absorb expand with heat and contract with cold and shake caused by change in size,
Through being widely used in the fields such as instrument and meter, aviation, micromachine, petrochemical industry and auto industry.Metal bellows is by straight
Pipe is process, and its main manufacturing process includes：Mechanical molding, rubber molding (elastic contour forming), hydroforming, it is welded into
Shape.Wherein mechanical molding includes rolling forming, mould pressing.
Long-term production practices prove, though mechanical molding's especially rolling forming can realize the production of big wave height bellows,
But crudy is unstable, had a great influence by operating personnel's technical merit, because each waveform is along week in forming process
Shaped to gradual, the phenomenon of local stress and Surface hardened layer inequality be present；Though rubber molding, which can be realized, is compressed axially compensation deformation
The material in area, wall thickness change is little, and waveform size is stable, but can not realize the production of big wave height bellows；Though hydroforming energy
Realize the production of big wave height bellows and bellows surface is not allowed to be also easy to produce the surface quality problems such as scuffing, production efficiency is high, especially
It is that more ripples are once-forming, but bellows wall thickness changes greatly and waveform size is unstable, it is easy to forming dimension occurs and is not inconsistent
Close desired situation.In a word, the manufacturing process of existing big wave height bellows cannot be guaranteed the quality of its shaping.
The content of the invention
It is contemplated that comprehensive existing each forming process, propose a kind of new metal bellows forming process with
Improve big wave height bellows dimensional stability and surface quality.
The object of the invention is realized by following technical proposals：
A kind of major diameter bellows vibration shaping device, mainly by mandrel, ripple core, terminal pad, shaping wheel, support
Frame, vibrating device composition, the corrugated core die sleeve is loaded on mandrel, and connects into an overall mould by mandrel and terminal pad
Tool, has the clamping jaw gripped in two ends of pipe, and the shaping wheel is arranged on support frame and is distributed in pipe
Outside, the vibrating device are arranged on support frame afterbody；The corrugated profile of the ripple core is by multiple spacing identical ripples
Composition, the corrugated profile of the ripple core match with formed bellow inner surface corrugated profile, the foreign steamer of the shaping wheel
Contour curved surface is engaged with the ripple of formed bellow, Vibration on Start-up device and applies footpath to pipe surface by shaping wheel during shaping
To vibrational excitation, first radial feed is taken turns in shaping, after the ripple collective effect of shaping wheel and ripple core makes pipe form ripple,
Move axially again, until a ripple is completed, then radially exit, carried out after one ripple spacing of axial feed next
The shaping of ripple, so circulation are until all corrugations finish.
The mandrel one end carries flange, and through hole is machined with flange, and the other end is threaded hole, and vertically
A plane is machined with, the plane is through to flange root always by mandrel head；The ripple core can as needed vertically
It is divided into three or more splitted structure, every piece of core valve both ends are provided with screwed hole, and one of core valve is bottom
Plane, two parallel sides, top ripple type face, base plane and the mandrel flat face of the core valve touch.
The ripple of the ripple core is made up of three sections of circular arcs, respectively top arc section and two identical root circular arcs
Section.
The shaping wheel is arranged symmetrically in pipe outside along horizontally or vertically direction.
The clamping jaw includes left end clamping jaw, right-hand member clamping jaw, shares 4 left end clamping jaws and 4 right-hand member clamping jaws are distributed in respectively
The left end and right-hand member of pipe；The left end clamping jaw carries boss, and inner surface is circular arc, and the boss is used in pipe by a left side
Pipe left end is bent into pipe during the clamping jaw clamping of end and clasp ripple core end to increase the stability of pipe clamping；The right side
Hold clamping jaw inner surface V-shaped；The clamping jaw inner surface contacted with pipe is machined with the groove of increase coefficient of friction；Bellows shapes
When, left end clamping jaw clamps pipe and drives pipe blank rotary, and right-hand member clamping jaw clamps pipe and applies an axial tension simultaneously to avoid ripple
Pipe surface Instability wrinkling when line shapes.
The vibrating device can use one of following form：Mechanical oscillation, ultrasonic vibration, hydraulic vibration, pneumatic vibrating, its
Vibration frequency is 10Hz~20kHz, and amplitude is 2~50 μm.
A kind of major diameter bellows vibration shaping method, including step in detail below：
(1) mandrel, ripple core are assembled into a unitary mould by screw and terminal pad；
(2) pipe is packed on the outside of ripple core, internal surface of bloom contacts with ripple core outer surface, and pipe left part surpasses
Go out ripple core 10~40mm of end；
(3) mould for assembling pipe is put into the left and right end clamping jaw of opening, the boss medial surface of left end clamping jaw exceeds
The distance of 1.2~2 times of pipe wall thickness in ripple core end, so that the inside lateral bend of pipe clasps corrugated core when left end clamping jaw clamps
Mould end, left and right end clamping jaw clamps pipe, while left end clamping jaw drives pipe to start to rotate, and right-hand member clamping jaw applies axial tension；
(4) the shaping wheel radial compression pipe by the ripple of left part being arranged symmetrically starts rolling forming, simultaneously
Vibration on Start-up device applies radial vibration excitation, and when radial displacement reaches specified ripple's depth, shaping wheel starts to realize axially
Feeding, until ripple is completed, then radially exit and carried out after one ripple spacing of axial feed next ripple into
Shape, so circulation are until all corrugations finish；
(5) left and right end clamping jaw is unclamped, the formed bellow after completion of processing is unloaded together with mould, connected under dismounting
After connecing disk, mandrel is first extracted out, then pull down the corrugated core mold section that bottom is plane, then take out other corrugated core mold section, finally
Obtain formed bellow.
The beneficial effects of the invention are as follows：New forming technology is effectively reduced metal pipe material and finishing die using vibrational excitation
Frictional force between tool, and when applying dither excitation, can reduce metal pipe material resistance of deformation, suppress tubing corrugation
And the generation and development of rupture；Because the contact between tubing of shaping wheel is localized contact, when shaping wheel rolls between tubing
Continuous moment impact can promote effective patch mould of metal pipe material and corrugated core intermode, ensure the accuracy of ripple pipe size,
Effectively suppress the resilience of tubing simultaneously；Shaping wheel is arranged symmetrically can be with the plastic force of active balance tubing, while vibrational excitation can
Plastic force is reduced so as to reduce the requirement of shaping wheel drive force, scuffing of the shaping wheel to tube surfaces is decreased, makes shaping wave
The surface smoothness increase of line pipe, so as to improve the dimensional stability and surface quality of big wave height bellows.
Brief description of the drawings
Fig. 1 is major diameter bellows vibration shaping apparatus structure schematic diagram of the present invention.
Fig. 2 is Fig. 1 K-K profiles.
Fig. 3 is the core shaft structure schematic diagram of major diameter bellows vibration shaping device of the present invention.
Fig. 4 is the left end clamping jaw structure schematic diagram of major diameter bellows vibration shaping device of the present invention.
Fig. 5 is close-up schematic view at Fig. 1 A.
Specific implementation method
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described：
As shown in Fig. 1~2, a kind of major diameter bellows vibration shaping device of the embodiment of the present invention, mainly by mandrel 1,
Ripple core 2, support frame 4, shaping wheel 5, terminal pad 7, vibrating device 10 are formed, and ripple core 2 is set on mandrel 1, and is led to
Cross the flange of the bottom of mandrel 1 and the terminal pad 7 of end connects into a unitary mould, tubing 9 is set in the outside of ripple core 2.
Two ends of pipe 9 are provided with the left end clamping jaw 8 and right-hand member clamping jaw 6 gripped.Share 4 left end clamping jaws and 4 right-hand members
Clamping jaw is distributed in pipe both ends.Coordinated between shaping wheel 5 and support frame 4 by rotating shaft 3 and installed.It is provided with the tail end of support frame 4
Vibrating device 9.Support frame 4 can realize the radial and axial feed motion of tubing under external force.
As shown in figures 2-3, the one end of mandrel 1 carries flange, is machined with through hole on flange, the other end is threaded
Hole, and a plane is machined with vertically, the plane is through to flange root always by mandrel head；Ripple core 2 divides vertically
Into three pieces of core valves 2-1,2-2,2-3, every piece of core valve both ends are provided with screwed hole, and one of core valve 2-1 puts down for bottom
Face, two parallel sides, top ripple type face, the base plane of the core valve are touched with above-mentioned mandrel flat face.
As shown in figure 4, left end clamping jaw 8 carries boss, inner surface is circular arc, and boss is used to be pressed from both sides by left end in pipe 9
Pipe left end is bent into pipe when claw clip is tight and clasp ripple core end to increase the stability of pipe clamping；Right-hand member clamping jaw 6
Inner surface is V-shaped (referring to Fig. 2)；The left and right end clamping jaw inner surface contacted with pipe is machined with the groove of increase coefficient of friction；
When bellows shapes, left end clamping jaw 8 clamps pipe and drives pipe 9 to rotate, and right-hand member clamping jaw 6 clamps pipe 9 and applies an axle simultaneously
To pulling force to avoid corrugation when pipe surface Instability wrinkling.
As shown in figure 5, the ripple of ripple core is made up of three sections of circular arcs, be respectively top using R as the arc section of radius and
Root arc section of two identicals using r as radius.Shaping wheel 5 has two, and in the vertical direction is distributed in tubing about 9 respectively
Both sides.The outline curve of shaping wheel 5 matches with shaping ripple.
A kind of major diameter bellows vibration shaping method of the embodiment of the present invention, the material of bellows formed thereby for 304 not
Become rusty steel, and bellows is alternately made up of straight wall section and bellows segment, and the external diameter of its straight wall section is 330mm, wave height 27mm, wall thickness
2mm, ripple top round radius R is 18mm, and root fillet radius r is 10mm.What it shaped comprises the following steps that：
Step 1: reference picture 1~2, an overall mould is assembled into by mandrel 1, ripple core 2 by screw and terminal pad 7
Tool；
Step 2: pipe 9 is packed into the outside of ripple core 2, the inner surface of pipe 9 contacts with the outer surface of ripple core 2, pipe
Left part exceeds the end 30mm of ripple core 2；
Step 3: the mould for assembling pipe is put into the left and right end clamping jaw 8,6 of opening, in the boss of left end clamping jaw 8
Side s faces (see Fig. 4) exceed ripple core end face 3mm, so that 9 inside lateral bend of pipe clasps corrugated core when left end clamping jaw 8 clamps
The end of mould 2, left and right end clamping jaw 8,6 clamps pipe 9, while left end clamping jaw 8 drives pipe 9 to start to rotate, and right-hand member clamping jaw 6 applies
Axial tension；
Step 4: the shaping wheel 5 of arrangement symmetrical above and below radial compression pipe 9 by the ripple of left part starts to roll
Shaping, while Vibration on Start-up device applies radial vibration excitation, when radial displacement reaches 27mm, shaping wheel starts to realize axially
Feeding, until ripple is completed, then radially exit and carried out after one ripple spacing of axial feed next ripple into
Shape, so circulation are until all corrugations finish；
Step 5: unclamping left and right end clamping jaw 8,6, the formed bellow after completion of processing is unloaded together with mould, torn open
After unloading terminal pad 7, mandrel 1 is first extracted out, then pull down the core valve 2-1 that bottom is plane, then take out other core valve 2-
2nd, 2-3, finally formed bellow is obtained.
Claims (6)
1. a kind of major diameter bellows vibration shaping device, it is characterised in that mainly by mandrel, ripple core, terminal pad, shaping
Wheel, support frame, vibrating device composition, the corrugated core die sleeve is loaded on mandrel, and connects into one by mandrel and terminal pad
Unitary mould, there is the clamping jaw gripped in two ends of pipe, the clamping jaw includes left end clamping jaw, right-hand member clamping jaw,
Share 4 left end clamping jaws and 4 right-hand member clamping jaws are distributed in the left end and right-hand member of pipe respectively；The left end clamping jaw carries boss,
Inner surface is circular arc, and the boss clasps ripple for making pipe left end be bent into pipe when pipe is clamped by left end clamping jaw
Line core end with increase pipe clamping stability；The right-hand member clamping jaw inner surface is V-shaped；Table in the clamping jaw contacted with pipe
Face is machined with the groove of increase coefficient of friction；When bellows shapes, left end clamping jaw clamps pipe and drives pipe blank rotary, right-hand member
Clamping jaw clamps pipe surface Instability wrinkling when pipe applies an axial tension to avoid corrugation simultaneously；The shaping wheel installation
On support frame and it is distributed on the outside of pipe, the vibrating device is arranged on support frame afterbody；The ripple type of the ripple core
Face is made up of multiple spacing identical ripples, corrugated profile and the formed bellow inner surface corrugated profile phase of the ripple core
It coincide, the foreign steamer contour curved surface of the shaping wheel is engaged with the ripple of formed bellow, Vibration on Start-up device and is passed through during shaping
Shaping wheel applies radial vibration excitation to pipe surface, and first radial feed is taken turns in shaping, when the ripple of shaping wheel and ripple core is total to
After same-action makes pipe form ripple, then move axially, until a ripple is completed, then radially exit, axial feed
The shaping of next ripple is carried out after one ripple spacing, so circulation is until all corrugations finish.
A kind of 2. major diameter bellows vibration shaping device according to claim 1, it is characterised in that described mandrel one end
Portion carries flange, and through hole is machined with flange, and the other end is threaded hole, and is machined with a plane vertically, the plane
Flange root is through to by mandrel head always；The ripple core is axially subdivided into more than three pieces of splitted structure, every piece of core
Mold section both ends are provided with screwed hole, and one of core valve includes base plane, two parallel sides and top ripple type face, described
The base plane of core valve is touched with mandrel flat face.
A kind of 3. major diameter bellows vibration shaping device according to claim 1 or 2, it is characterised in that the ripple
The ripple of core is made up of three sections of circular arcs, respectively top arc section and two identical root arc sections.
A kind of 4. major diameter bellows vibration shaping device according to claim 1 or 2, it is characterised in that the shaping
Wheel is arranged symmetrically in pipe outside along horizontally or vertically direction.
A kind of 5. major diameter bellows vibration shaping device according to claim 1 or 2, it is characterised in that the vibration
Device can use one of following form：Mechanical oscillation, ultrasonic vibration, hydraulic vibration, pneumatic vibrating, its vibration frequency be 10Hz~
20kHz, amplitude are 2~50 μm.
6. a kind of major diameter bellows vibration shaping method, including step in detail below：
(1) mandrel, ripple core are assembled into a unitary mould by screw and terminal pad；
(2) pipe is packed on the outside of ripple core, internal surface of bloom contacts with ripple core outer surface, and pipe left part exceeds ripple
Line core 10~40mm of end；
(3) mould for assembling pipe is put into the left and right end clamping jaw of opening, the boss medial surface of left end clamping jaw exceeds ripple
The distance of 1.2~2 times of pipe wall thickness in core end, so that the inside lateral bend of pipe clasps ripple core end when left end clamping jaw clamps
Portion, left and right end clamping jaw clamps pipe, while left end clamping jaw drives pipe to start to rotate, and right-hand member clamping jaw applies axial tension；
(4) the shaping wheel radial compression pipe by the ripple of left part being arranged symmetrically starts rolling forming, starts simultaneously
Vibrating device applies radial vibration excitation, and when radial displacement reaches specified ripple's depth, shaping wheel starts to realize axial feed,
Until a ripple is completed, then radially exit and the shaping of next ripple is carried out after one ripple spacing of axial feed, such as
This circulation is until all corrugations finish；
(5) left and right end clamping jaw is unclamped, the formed bellow after completion of processing is unloaded together with mould, dismantles lower terminal pad
Afterwards, first extract mandrel out, then pull down the corrugated core mold section that bottom is plane, then take out other corrugated core mold section, finally produce
To formed bellow.
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| CN201610551838.9A CN106040811B (en) | 2016-07-14 | 2016-07-14 | A kind of major diameter bellows vibration shaping device and method |
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| CN201610551838.9A CN106040811B (en) | 2016-07-14 | 2016-07-14 | A kind of major diameter bellows vibration shaping device and method |
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| CN106040811B true CN106040811B (en) | 2017-12-29 |
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| CN106944517B8 (en) * | 2017-04-13 | 2020-02-18 | 泉州台商投资区忆品茶业有限公司 | End top pressure fixing structure suitable for steel pipe wave making |
| CN107088599A (en) * | 2017-05-06 | 2017-08-25 | 芜湖瑞德机械科技有限公司 | A kind of stainless steel tube makes ripple machine |
| CN107413915B (en) * | 2017-08-08 | 2023-05-02 | 中船双瑞(洛阳)特种装备股份有限公司 | Bellows with bag forming die with straight-edge section clamping device |
| CN108480442A (en) * | 2018-05-25 | 2018-09-04 | 长园电力技术有限公司 | A kind of recovery device of cable metal bellows |
| CN111589919A (en) * | 2020-05-29 | 2020-08-28 | 佛山市南海和信福莱克思金属制品有限公司 | Forming mold closing device and corrugated pipe forming equipment for metal corrugated pipe with omega-shaped section |
| CN111715752A (en) * | 2020-06-28 | 2020-09-29 | 刘龙英 | Corrugated pipe roll forming machine |
| CN112355108B (en) * | 2020-10-23 | 2022-06-17 | 南京德邦金属装备工程股份有限公司 | Forming method of large-caliber corrugated pipe expansion joint |
| CN114011932B (en) * | 2021-12-16 | 2023-09-26 | 核工业理化工程研究院 | Corrugated forming tool for thin-wall pipe fitting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09239472A (en) * | 1996-03-08 | 1997-09-16 | Nippon Spindle Mfg Co Ltd | Method for drawing base stock for bellows |
| CN102588682A (en) * | 2012-02-20 | 2012-07-18 | 刘明辉 | One-step formed weldless mechanically sealed metal corrugated pipe |
| CN104028606B (en) * | 2014-06-06 | 2016-01-20 | 中国航天科技集团公司长征机械厂 | A kind of spinning portion brace type bellows spinning machine and forming method |
| CN104028598B (en) * | 2014-06-06 | 2016-04-20 | 中国航天科技集团公司长征机械厂 | A kind of bellows processing technology |
| CN104607520B (en) * | 2015-01-16 | 2017-01-11 | 西北工业大学 | Spinning mechanism and method for forming corrugated pipe |
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