CN104275378B - Big radius-thickness ratio longbow is high to be revolved shaped device than end socket punching and rushes rotation method - Google Patents
Big radius-thickness ratio longbow is high to be revolved shaped device than end socket punching and rushes rotation method Download PDFInfo
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- CN104275378B CN104275378B CN201410570884.4A CN201410570884A CN104275378B CN 104275378 B CN104275378 B CN 104275378B CN 201410570884 A CN201410570884 A CN 201410570884A CN 104275378 B CN104275378 B CN 104275378B
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- spinning roller
- end socket
- longbow
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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 relates to high the punching than end socket of a kind of big radius-thickness ratio longbow revolve shaped device and rush rotation method.The parts such as lathe door frame that shaped device includes being made up of column and back timber, base, crossbeam, bispin wheel carrier, turntable, cylindrical mould, annular pressing plate fixture.Turntable is arranged on lathe base, and cylindrical mould is installed on a spinstand, and workpiece to be processed is the most closely installed on cylindrical mould, it is possible to achieve workpiece and mould are with turntable synchronous rotary.A spinning roller frame it is respectively arranged with, equipped with spinner's chisel spinning roller on it in the left and right sides of crossbeam.The both vertically and horizontally feeding of spinning roller is realized by motor and leading screw.Use double rotary wheel structure can increase the workpiece stability under loading in spin-forming procedure, reduce the vibration impact on the course of processing.Spin-on process is that double rotary wheel extrudes component shaping from the workpiece periphery of the left and right sides to centrally along symmetrical arc feeding respectively.This equipment is simple, without striking out drum, forming process is stable, is avoided that big radius-thickness ratio longbow high ratio occurs the phenomenon of unstability, it is thus possible to it is high than end socket entirety precise forming to realize big radius-thickness ratio longbow during seal head molding.
Description
Technical field
The present invention relates to high the punching than end socket of a kind of big radius-thickness ratio longbow revolve shaped device and rush rotation method.
Background technology
A kind of method that aerospace industry processes end socket the most frequently used is melon flap-type spicing forming type method, will a large-sized end enclosure
It is divided into some lobes, first by the most stamping for each resolution, then uses argon arc welding or agitating friction weldering to be spliced into an integrated head.
The development of aerospace industry, proposes harsher requirement to physical dimension, precision and the overall performance of component.Realize this class A of geometric unitA
Large scale, thin-walled property, lightweight and monolithic molding become the new trend of manufacturing process.This melon flap-type spicing forming type processing side
Method stamping process has difficulties, simultaneously because welding procedure exists all the time in terms of ensureing the concordance of each point of lobe performance
Weld seam, can there is certain difference with the mechanical property of mother metal in weld seam, thin-wall member also considerably increases the difficulty of welding procedure.
Current domestic utilization has mould spinning process (die pressing) can successfully revolve diameter processed about2000mm, radius-thickness ratio is less than 300
End socket, but be as workpiece radius-thickness ratio when increasing to about 400, surface of the work regional area during shape is made in rotation produces
Wrinkling unstability, even ftractures time serious and causes end socket to manufacture unsuccessfully.
The development of rotary pressure technology provides new process to end socket manufacture, 1. has molding head spinning process i.e. to utilize core to add
Workpiece pointwise is rolled by spinning roller, makes sheet metal produce plastic deformation thus reaches the purpose of forming head.2. two step method end socket
Spinning, dividing potential drop drum and flange two procedures, drum pressure be use punching press method utilize drum pressure machine by circle flat panel workpieces by inner to
Outer punching press, workpiece is rotated an angle by every punching press once-through operation machine, until stamping；Flange is will to have the core in mould spinning
Mould changes inward turning pressure roller (forming rolls), coordinates outward turning pressure roller (pressure wheel) that the semi-finished product that first step drum pressure obtains are spun into end socket
Shape.Existing both approaches is all to use big tail top to constrain on core by the center of workpiece, and main shaft drives core and workpiece to turn
Dynamic, spinning roller by workpiece along spinning roller direction of feed grinding forming.Current domestic utilization has mould spinning process maximum can revolve diameter processed about
For2000mm, the radius-thickness ratio end socket curved surface member less than 300, when workpiece radius-thickness ratio increases to 400, surface of the work shapes
During regional area produce wrinkling unstability, time serious edge produce warpage or wave wrinkling.
Summary of the invention
There is mould spinning process (workpiece centre retrains, and periphery is free end) for existing, processing big radius-thickness ratio longbow height
The unstable phenomenon such as the easiest wrinkling, warpage than during thin-walled vessel head, spy of the present invention provides the big of a kind of workpiece perimeter constraint
Radius-thickness ratio longbow is high to be rushed cyclone than end socket and rushes rotation method.
The thin-walled longbow height rotary pressed head forming device of a kind of workpiece perimeter constraint, including column 1, crossbeam 2, back timber 3, rotation
Wheel carrier 4, hydraulically extensible bar 5, spinning roller 6, down-feed screw 7, vertical step motor 8, horizontal screw lead 9, horizontal step motor 10, annular
Pressing plate 11, workpiece 12, bolt 13, cylindrical mould 14, turntable 15, worm screw 16, worm gear 17, cylinder roller bearing 18, sleeve 19,
Thrust ball bearing 20, base 21, balance leading wheel 22, wherein, door frame is connected left and right two columns 1 by back timber 3 and forms, at two columns
Rectangle long recess is left in middle position, is mounted with down-feed screw 7 and vertical step motor 8 in groove, and down-feed screw 7 lower end is even
Connect vertical step motor；Turntable cylindrical mould installed above 14, the rotation main shaft of turntable 15 by cylinder roller bearing 18,
Sleeve 19, thrust ball bearing 20 are arranged on base 21；Balance leading wheel 22 is arranged on base 21；Crossbeam connects the right and left
Down-feed screw, be positioned at below back timber；About crossbeam between two columns, the left and right sides at midpoint is respectively provided with a spinning roller frame 4；
Spinning roller 6 it is provided with below spinning roller frame；
Being provided with two set horizontal step motor 10 and horizontal screw lead 9 in described crossbeam, left and right two horizontal screw lead passes through bolt
It is fixed in crossbeam with bearing, is connected with horizontal step motor output shaft by shaft coupling at leading screw end, be respectively used to control
The feeding of left-right rotary wheel carrier horizontal direction；
By annular pressing plate 11 and the tight card engaging workpiece 12 of bolt 13 above described cylindrical mould, shape workpiece 12 periphery
Operative constraint；
The rotation main shaft of described turntable 15 is connected with worm gear 17, and worm screw 16 coordinates transmission regulation turntable to turn with worm gear 17
Speed；By regulating the rotating speed of motor, it is achieved the demand to different rotating speeds.
Described balance leading wheel 22 totally 4, is uniformly arranged on the one of base 21 and determines on circumference, connect with turntable gathering sill
Touch, play the guiding role, prevent from turntable rotary course swings.
Installing hydraulically extensible bar 5 in described spinning roller frame, hydraulically extensible bar can change the extension elongation of spinning roller.
Described spinning roller 6, for different radius of corner spinning rollers or difformity spinning roller.
Described cylindrical mould can be changed, and the big I changing mould realizes the processing of different-diameter end socket, and this is to reality
Existing machine many sizes end socket produces and is highly profitable.
Concrete spin-on process is: being fixed on cylindrical mould 14 by workpiece 12, spinning roller 6 presses end socket bus track feeding, squeezes
Pressure workpiece 12, gradually by the shape 12 ' needed for component shaping；Workpiece in spinning process with spinning roller 6 feeding to constantly to tubular
Mould 14 bottom protrusion, two spinning rollers, at workpiece surface, enter to centrally along symmetrical arc from left and right two periphery of workpiece respectively
Giving extruding workpiece, workpiece with the curve form that spinning roller feeding formation is consistent with Roller locus, rushes through multi-pass during punching rotation
Rotation, final precise forming big radius-thickness ratio longbow is high than end socket head 12 ' '.
During longbow is high than seal head forming, hydraulically extensible bar is very important, it is possible to achieve spinning roller vertical direction
Big stroke feeding, it is to avoid with cylindrical mould generation mechanical interference during crossbeam big stroke feeding.
Big radius-thickness ratio longbow height rushes cyclone than end socket and is divided into from the point of view of movement angle: 1. rotary motion；2. vertical direction
Motion；3. horizontal motion.Rotary motion includes that turntable, cylindrical mould and workpiece three interconnect, and synchronizes
Rotate；Movement in vertical direction includes vertical direction feeding and the spinning roller vertical direction feeding of crossbeam, and spinning roller is made at hydraulically extensible bar
Stretching motion under with；Horizontal motion refers to the horizontal feed of spinning roller frame, spinning roller.The vertical direction feeding of spinning roller and spinning roller
The feed motion of horizontal direction is all completed by digital control system, and by coding, the program finished is assigned to control
Device, controller passes to stepper motor driver with pulse singaling, and driver provides electric power for motor, orders about stepping
Motor completes the feed motion required.Programme-control movement in a curve, workpiece rotates under turntable effect, three motions
It is combined into spherical helix motion, thus realizes takeshapes of closure.
Described end socket punching rotation shaped device feature be not use existing rotary pressed head equipment work-piece center to retrain, periphery without
The forming mode of constraint Free Transform, but use workpiece periphery to apply the mode that constraint is fixing, improve rotary pressed head process
Middle periphery Free Transform, uncontrollable shortcoming and workpiece are susceptible to the defective workmanships such as deformation instability.It is thus possible to it is thick to realize big footpath
The high overall uniformly molding than end socket not unstability than longbow.
Described work-piece constraint mode is, by annular pressing plate fitted bolt, workpiece perimetral tight is fixed on cylindrical mould
On.
Described spinning roller movement locus be to be rotated by driven by motor down-feed screw and horizontal screw lead thus promote crossbeam and
Spinning roller frame motion synthesis the most along the vertical and horizontal directions becomes end socket bus track.
Described spinning roller vertical direction can realize long-range feeding, in order to avoid carrying out high (the bow height: arrive bottom end socket of longbow
The vertical dimension at top) crossbeam interferes with mould during seal head forming feeding, causes damage of facilities.A set of by design
Hydraulically extensible bar, to increase spinning roller extension elongation, it is achieved longbow height end socket is processed.
The rotation of described workpiece, is to be fixed on cylindrical mould by workpiece, and cylindrical mould is installed on a spinstand, workpiece
Realize with turntable rotation.
The rotating speed of described turntable can regulate, and the gear ratio changing worm and gear can realize different motor speed
Defeated place.The end socket shaping different accuracy and efficiency is provided conveniently by this.
This device outstanding advantages is: uses and is different from the existing workpiece centre having mould spinning machine and two step method sealing head spinning machine
Constraint, periphery is the design of free end, the tubular rotary table that the design is arranged, and utilizes annular pressing plate and bolt by work
The perimeter constraint of part and mode that center does not retrains shapes big radius-thickness ratio longbow height compares end socket.The chucking method of workpiece and workpiece week
The way of restraint on limit is the prominent features of this device and spin-on process.Outside such the way of restraint is applied with effectively to workpiece periphery
Constraint, improve existing rotary pressed head device workpiece periphery without constraint, workpiece periphery Free Transform is uncontrollable causes workpiece to deform
During the shortcoming of easy wrinkling unstability.Device is simple, and without drum pressure machine, operation machine, rotary extrusion flanger, including drum pressure, flange exists
Interior all techniques can be completed by control Roller locus.Spinning roller can be real under hydraulically extensible bar and beam engagement effect
Existing vertical direction big stroke feeding, it is achieved processing longbow height end socket.Fix by increasing workpiece periphery, form operative constraint, become
During shape workpiece periphery can not Free Transform, workpiece deformation instability phenomenon can be suppressed very well.In whole forming process, two rotations
Wheel is at workpiece surface, respectively from the right and left of workpiece to central arcuate feeding, extrudes workpiece, rushes lathe turner's part through multi-pass
Type.
Utilizing FEM software to simulate apparatus of the present invention punching rotation formed head to find, end socket diameter is about3000mm,
When radius-thickness ratio is 550, forming process is stable, and wrinkling unstable phenomenon does not occurs in surface of the work.Thus contrast understands: utilize the present invention
Rush cyclone and rush rotation method process big radius-thickness ratio end socket relatively have mould spinning process to have superiority.Determining that end socket diameter is about simultaneouslyWhen 3000mm radius-thickness ratio is 300, the bow of simulation difference respectively is high has mould spinning process molding and end socket punching rotation molding than end socket, finds
When utilization has mould spinning process forming head, when end socket bow height ratio is when increasing to 1/5, and with the propelling of spinning roller feeding, workpiece stiffness becomes
Little, there is warpage in the edge of work, and warpage does not disappear during shaping, accumulation is serious, affects seal head forming.Due to the present invention
Device, on the basis of analysis has mould spinning process warpage principle, uses leash law suppression edge of work rigidity rapid with spinning roller feeding
Reducing, apparatus of the present invention devise workpiece perimeter constraint, and workpiece periphery applies outer constraint.Utilize apparatus of the present invention punching rotation
Forming head, end socket bow height ratio is when reaching 1/3, and punching is threaded through Cheng Weijian difference situation, and forming process is stable, workpiece deformation smoothness.
Thus contrast understands: with the present invention rush cyclone and to rush rotation method processing longbow high more effective compared with there being mould spinning process than end socket.
Accompanying drawing explanation
Fig. 1 is the structural representation that end socket of the present invention rushes cyclone；
Fig. 2 is the workpiece duty partial schematic diagram that end socket of the present invention rushes cyclone；
Fig. 3 is that end socket of the present invention rushes cyclone workpiece final molding schematic diagram.
Detailed description of the invention
The present invention is a kind of big radius-thickness ratio longbow high end socket higher than longbow punching rotation shaped device
With reference to Fig. 1, lathe door frame includes column 1 and back timber 3, two columns 1 about back timber 3 connection, is provided with in column groove
Down-feed screw 7 and vertical step motor 8, down-feed screw 7 connecting cross beam 2, it is separately installed with horizontal screw lead 9 and level in crossbeam 2
Motor 10, connects two spinning roller framves 4 by horizontal lead screw on crossbeam 2, and spinning roller frame 4 lower end is provided with spinning roller 6, spinning roller frame
4 built-in hydraulically extensible bars 5, workpiece 12 is fixed on cylindrical mould upper surface, cylindrical mould by annular pressing plate 11 and bolt 13
14 are contained on turntable 15, and the rotation main shaft of turntable 15 is by being connected with worm gear 17, and worm screw 16 coordinates transmission to adjust with worm gear 17
Joint turntable rotating speed, the rotation main shaft of turntable 15 is arranged on the end by cylinder roller bearing 18, sleeve 19, thrust ball bearing 20
On seat 21.
With reference to Fig. 2, utilizing this punching rotation method, by being fixed on cylindrical mould 14 by workpiece 12, it is female that spinning roller 6 presses end socket
Line tracking feeding, extruding workpiece 12 is gradually by the shape 12 ' needed for component shaping, multi-pass punching rotation, the big radius-thickness ratio of final molding
Longbow is high than end socket 12 ' '.
Claims (6)
1. big radius-thickness ratio longbow high ratio end socket punching rotation shaped device, including column (1), crossbeam (2), back timber (3), spinning roller frame (4),
Hydraulically extensible bar (5), spinning roller (6), down-feed screw (7), vertical step motor (8), horizontal screw lead (9), horizontal step motor
(10), annular pressing plate (11), workpiece (12), bolt (13), cylindrical mould (14), turntable (15), worm screw (16), worm gear
(17), cylinder roller bearing (18), sleeve (19), thrust ball bearing (20), base (21), balance leading wheel (22), its feature
Being, door frame is made up of two columns (1) about back timber (3) connection, leaves rectangle long recess, at groove in two column middle positions
Inside being mounted with down-feed screw (7) and vertical step motor (8), down-feed screw (7) lower end connects vertical stepping electricity by shaft coupling
Machine (8)；Turntable cylindrical mould installed above (14), the rotation main shaft of turntable (15) is by cylinder roller bearing (18), set
Cylinder (19), thrust ball bearing (20) are arranged on base (21), and balance leading wheel (22) is arranged on base (21)；Crossbeam (2)
It is connected on the down-feed screw of the right and left, is positioned at below back timber；About crossbeam between two columns, the left and right sides at midpoint is respectively
Equipped with a spinning roller frame (4)；Spinning roller (6) it is provided with below spinning roller frame；
Two set horizontal step motor (10) and horizontal screw lead (9) are installed in described crossbeam, are respectively used to control left-right rotary wheel carrier
The feeding of horizontal direction；Horizontal screw lead (9) one end is by bearing, bearing block and is bolted in crossbeam, and the other end is by connection
Axial organ is connected with the horizontal step motor output shaft being fixed on crossbeam；
By annular pressing plate (11) and bolt (13) closely card engaging workpiece (12) above described cylindrical mould, formed workpiece periphery
Operative constraint；
The rotation main shaft of described turntable (15) is connected with worm gear (17), and worm screw (16) turns with worm gear transmission regulation turntable
Speed；
Described balance leading wheel (22) totally 4, is uniformly arranged on the circumference of base (21), contacts with turntable gathering sill, rises
Guide effect, prevents from swinging in turntable rotary course.
Big radius-thickness ratio longbow the most according to claim 1 high ratio end socket punching rotation shaped device, it is characterised in that described spinning roller
Installing hydraulically extensible bar (5) in frame, hydraulically extensible bar changes the extension elongation of spinning roller.
Big radius-thickness ratio longbow the most according to claim 1 high ratio end socket punching rotation shaped device, it is characterised in that described spinning roller
For different radius of corner spinning rollers.
Big radius-thickness ratio longbow the most according to claim 1 high ratio end socket punching rotation shaped device, it is characterised in that described spinning roller
For difformity spinning roller.
Big radius-thickness ratio longbow the most according to claim 1 high ratio end socket punching rotation shaped device, it is characterised in that described tubular
Mould is replaceable.
6. rush rotation side according to the described big radius-thickness ratio longbow of any one of claim 1-5 is high than end socket punching rotation shaped device
Method, it is characterised in that being fixed on cylindrical mould (14) by workpiece (12), two spinning rollers are at workpiece surface, respectively from workpiece
Left and right two periphery to centrally along symmetrical arc feeding, extrude workpiece, gradually required shape (12 ') revolved in workpiece punching；Work
Part with the curve form that spinning roller feeding formation is consistent with Roller locus, revolves through multi-pass punching during punching is revolved, final accurate one-tenth
Type big radius-thickness ratio longbow is high than end socket (12 ' ')；
The spinning roller movement locus of said two spinning roller is to drive down-feed screw and horizontal step motor band by vertical step motor
Dynamic horizontal screw lead rotates, thus promotes crossbeam and spinning roller frame to move the most along the vertical and horizontal directions, is combined into end socket bus rail
Mark.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570884.4A CN104275378B (en) | 2014-10-24 | 2014-10-24 | Big radius-thickness ratio longbow is high to be revolved shaped device than end socket punching and rushes rotation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570884.4A CN104275378B (en) | 2014-10-24 | 2014-10-24 | Big radius-thickness ratio longbow is high to be revolved shaped device than end socket punching and rushes rotation method |
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| CN104275378A CN104275378A (en) | 2015-01-14 |
| CN104275378B true CN104275378B (en) | 2016-09-28 |
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Effective date of registration: 20180704 Address after: 410000 No. 1116, BCD tower, block BCD, business center, Lulong Road, 199 high tech Development Zone, Changsha, Hunan. Patentee after: Changsha super spin machinery technology Co., Ltd. Address before: 410000 Central South University, Changsha, Hunan Province, Yuelu District Patentee before: Central South University |