CN109794538A - A kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib - Google Patents
A kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib Download PDFInfo
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- CN109794538A CN109794538A CN201711136257.XA CN201711136257A CN109794538A CN 109794538 A CN109794538 A CN 109794538A CN 201711136257 A CN201711136257 A CN 201711136257A CN 109794538 A CN109794538 A CN 109794538A
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Abstract
The present invention proposes a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib, using internal rolling technology combination spinning with tension technology, it is once-forming in the same mold, a same spinning process to realize inside and outside modal circumferential stiffening rib, the problems such as valving die, die cost are high, production efficiency is low must be used by thoroughly solving caused by using interior shear spinning or outer shear spinning process forming；The present invention is axially moved it independently of each other with spinning roller by increasing axial traction movement, the any selection and the optimization of spinning track for realizing spinning position cooperate, to allow the outer modal circumferential stiffening rib of any position and interior modal circumferential stiffening rib easily to shape, it can be with the multiple outer modal circumferential stiffening ribs of progressive forming and multiple interior modal circumferential stiffening ribs, the adaptability for substantially increasing technique realizes the product structure that prior art cannot achieve.
Description
Technical field
The present invention relates to a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib belongs to spin forming technique neck
Domain.
Background technique
Outside spinning is a kind of traditional spinning process technology, use outside spinning technology can it is long with production length, with additional
The tubular revolving parts of strengthening tendons, have it is high-efficient, hot spinning, the processable bent spies such as bus shape and conical part can be carried out
Point.But outside spinning die length requires to be longer than product length, manufacture difficulty is big, adjustment precision is low, high production cost, most heavy
It wants, the product using outer shear spinning process forming with interior modal circumferential stiffening rib must use valving die, every production one
Part product must dismount mold again, and production efficiency is extremely low, be not suitable for batch production, it is low to can no longer meet national defense industry product
The requirement of cost, high efficiency, high-precision, high quality.
Internal rolling technology is a kind of newer rotary pressure technology, can be produced using internal rolling technology with interior modal circumferential stiffening rib
Tubular revolving parts have the characteristics that Product Precision height, high yield rate, high production efficiency, have certain advance.But
It is that internal rolling technology mould length requirement is longer than product length, and manufacture difficulty is big, adjustment precision is low, high production cost, most important
, product of the production length within 1m is only capable of using this technique, if fruit product is too long, outer surface of workpiece and mould contact surface
Product is excessive, and frictional force is big, and workpiece will be unable to demould, the long tubular of large-diameter high-accuracy needed for can not being applied to national defense industry development
The production of part.Most of all, segmental mandrel must be used with the product of outer modal circumferential stiffening rib using internal rolling process forming
Tool, one product of every production must dismount mold again, and production efficiency is extremely low, are not suitable for batch production, can no longer meet state
The requirement of anti-industrial products low cost, high efficiency, high-precision, high quality.
Existing internal rolling equipment is as shown in Figure 10, (wherein spinning machine lathe bed 01, core model 02, spinning roller 03, workpiece 04, flat
Heng Lun mechanism 05, screw 06, binder ring 07, spinning roller arm 08, lateral balladeur train 09) shown in, using in lateral L-type cantilevered list spinning roller
Spinning machine, axis, the radial feed of spinning roller 03 drive the L-type spinning roller arm 08 being connected on it in motor by lateral balladeur train 09
The lower whole axis of driving moves radially realization, and spinning roller arm is too long, and single-wheel spinning is rigidly extremely low, cannot achieve automatic centering spinning, and
And spinning force is smaller, can not carry out the rotary pressing processing of heavy wall difficulty moulding material, be unable to satisfy the processing of high-precision product.
Summary of the invention
It is an object of the invention to overcome the shortage of prior art, a kind of high efficiency is provided, high-precision, low cost, is used only
Shorter cyclic annular core model can progressive forming with multiple inside and outside modal circumferential stiffening ribs, long tubular within length 2m internal rolling
Manufacturing process.
Technical solution of the invention: a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib, by following
Step is realized:
The first step, the blank of straight tubular construction of the processing one end with evagination technique ring；
Blank wall thickness t1 is calculated according to reinforcing rib section and covering section reduction and is determined, blank length is according to constant-volume principle
And reserved process allowance is considered obtained by product COMPREHENSIVE CALCULATING, outer diameter φ D is determined according to the swollen diameter rule of internal rolling.Specific design
It is realized by following steps:
A2.1, blank thickness t1 is determined,
Reduction and covering section and the distribution of interior reinforcing rib section reduction, additional when determination basis includes external reinforcing ribs section spinning
Reduction is greater than 12% when strengthening tendons section spinning, and covering section and interior reinforcing rib section reduction distribution principle are that covering section reduction does not surpass
Limit attenuating rate is crossed, interior reinforcing rib section reduction improves covering section reduction while guaranteeing sufficiently swollen diameter and mold, reduces
Reinforcing rib section reduction；Fully consider covering section and the distribution of interior reinforcing rib section reduction and external reinforcing ribs section reduction demand, it is comprehensive
Design blank thickness is closed, unifies blank thickness and determines blank thickness t1.There is 12% or more to subtract when external reinforcing ribs section spinning
Thin rate is abundant to guarantee external reinforcing ribs fitting ladder die, guarantees external reinforcing ribs forming.
A2.2, the theoretical length L for determining blank,
According to the blank thickness t1 determined with inner and outer ring reinforcing rib cylinder final product structure and step A2.1, according to spinning
Constant-volume principle obtains blank theoretical length, evagination technique ring one end installation positioning surplus of blank, and the other end reserves technique
Surplus prevents oral area from deforming dramatic impact Product Precision；General installation positioning surplus is 40mm or so, process allowance is 20~
40mm。
A2.3, formula is utilizedDetermine blank outer diameter φ D, wherein Φ D1For band inner and outer ring reinforcing rib cylinder
The outer diameter of body final products, ε are the swollen mass runoff of spinning,For the gap of straight length portion outside blank and ladder die, wherein spinning is swollen
Mass runoff is related with material physical property, can grope to determine by test, and the gap of blank and the outer straight length portion of ladder die
Generally take 0.4~0.6mm.
Processing: being processed into predetermined size, shape by method for turning for the seamless tubular goods purchased from producer, has evagination work
Skill ring one end requires connection ring two sides with respect to blank outer surface verticality with higher, other end outer circle can chamfering, just
It is installed in blank.
Blank machining-size, required precision can be as follows, are also adjusted according to specific needs:
Evagination technique ring thickness: generally 6mm；
Evagination technique ring outer diameter: blank outer diameter φ D+12mm
Evagination technique ring two sides are with respect to blank outer surface verticality: generally 0.1mm
Wall thickness tolerance: generally 0.2mm
Diameter tolerance: generally 0.3mm.
Second step, blank destressing processing；
Destressing treatment process is selected for specific material, the strength of materials is reduced, meets spinning requirement.
Third step determines spinning track,
Spinning track includes into revolving section, positioning section, covering section, covering and interior reinforcing rib changeover portion, interior reinforcing rib section and outer
Reinforcing rib section；
Be designed into rotation section, positioning section, covering section, covering and interior reinforcing rib changeover portion, interior reinforcing rib section, external reinforcing ribs section at
Shape mode designs reduction, the drafts of each section of spinning, completes spinning Trajectory Design, determines forming process.
Detailed process is as follows:
A3.1, enter to revolve section and shaped using internal rolling mode, i.e., traction mechanism is motionless, and rotary wheel mechanism is moved to major axes orientation；
The length and technique that enter to revolve section are the well-known technique of internal rolling technique, and following technique can also be used, and enter rotation point and answer
Close to main shaft side 5~10mm of sideline in mold and away from external reinforcing ribs section part in ladder die, enters to revolve terminal and reach positioning
The slope form of section drafts.
A3.2, positioning section are shaped using internal rolling mode；
The length and technique of positioning section are the well-known technique of internal rolling technique, drafts and product first segment drafts one
Cause, positioning section spinning start spinning with tension after the completion, i.e. spinning roller axial position is motionless, and traction mechanism draws blank edge and main shaft
Opposite direction moves according to setting speed
A3.3, covering section carry out spinning in ladder die China and foreign countries straight length portion, and using straight path, drafts is according to production
Product thickness, spinning rebound amount determine that spinning rebound amount is groped to determine by test, covering segment length according to constant-volume principle by
Product calculates gained；
A3.4, covering section and interior reinforcing rib changeover portion carry out spinning in ladder die China and foreign countries straight length portion, using slope
Track is fitted using circular interpolation when formula track, interior reinforcing rib two sides cusp have a circular arc chamfering design, slope section drafts with plus
Strengthening tendons section is consistent；
A3.5, interior reinforcing rib section carry out spinning in ladder die China and foreign countries straight length portion, using straight path, drafts according to
Determine that spinning rebound amount is groped to determine by test according to product thickness, spinning rebound amount, reinforcing rib segment length is according to constancy of volume
Principle calculates gained by product；
A3.6, external reinforcing ribs section the external reinforcing ribs section part in ladder die carry out spinning, when spinning using traction mechanism,
Spinning roller arm cooperative movement track, i.e., before completion external reinforcing ribs after one section of spinning, spinning roller is radially withdrawn to home, dragger
Structure traction blank moves alone to external reinforcing ribs close to evagination technique ring one end end face axially along with main shaft opposite direction in mold
It is interior and away from 5~10mm of die face at, spinning roller arm is moved to starting point in A3.1, rotation is entered by the way of A3.1, and according to A3.2
Mode spinning external reinforcing ribs section positioning section, carry out spinning with tension later, until after external reinforcing ribs section spinning, traction mechanism axis
To stopping, using internal rolling mode, according to one section of drafts behind external reinforcing ribs section, being positioned after internal rolling processing external reinforcing ribs
Section, spinning roller arm inward turning is fed into A3.2 spinning with tension starting point, then carries out spinning with tension, completes each section of spinning below.
4th step, composite spinning,
Blank is installed, spinning program is designed based on spinning track, traction mechanism is moved to and has made a reservation for revolve position, is opened
Beginning spinning, based on spinning track work out spinning program make liftout, pre-rotation, along the movements such as desired trajectory spinning, stoppings oneself
It is dynamic to execute；
Specific spinning process is as follows:
A4.1, blank is mounted on the traction mechanism of spinning machine by binder ring, ladder die is mounted on mold biography
Dynamic tube inner chamber front end, traction mechanism drive blank to be axially moved to ladder die, and ladder die is by external reinforcing ribs part and outside
Straight length portion composition；
Spinning blank is lifted between traction mechanism and ladder die, evagination technique ring is pressed on traction by binder ring
Mechanism end face, blank is put into ladder die it is concordant with die face to blank axial centerline, pass through binder ring adjust blank
Radial and axial positioning is realized in axial position and fixation；
A4.2, it is manufactured into rotation section,
Enter to revolve section in the outer straight length portion of ladder die using internal rolling；
A4.3, processing positioning section,
Positioning section uses internal rolling in the outer straight length portion of ladder die；
A4.4, covering section or the processing of interior reinforcing rib section,
Covering section and interior reinforcing rib section are processed in the outer straight length portion of ladder die using spinning with tension, and spinning with tension is
Refer to that rotary wheel mechanism is axially static, traction mechanism draws blank and is axially moved along with main shaft opposite direction, and spinning roller machine uses interior lathe turner
Skill spinning；
A4.5, covering and interior reinforcing rib changeover portion are processed,
Covering and interior reinforcing rib changeover portion process using spinning with tension in the outer straight length portion of ladder die, covering
Reinforcing rib changeover portion uses ramp type track；
A4.6, the processing of external reinforcing ribs section, external reinforcing ribs section enter to revolve section, external reinforcing ribs positioning section, outer reinforcement by external reinforcing ribs
Positioning section forms after muscle main paragraph and external reinforcing ribs, and external reinforcing ribs section carries out spinning in the external reinforcing ribs part of ladder die, outside
Positioning section is using inward turning technique spinning, external reinforcing ribs main paragraph after reinforcing rib enters to revolve section, external reinforcing ribs positioning section and external reinforcing ribs
It is processed using spinning with tension；
A4.7, according to the structure with interior external reinforcing ribs cylinder final products, repeat step A4.2~A4.6 until completing whole
A band inner and outer ring reinforcing rib cylinder forming；
Spinning process realizes axial tensile force by traction mechanism traction blank, by the spinning roller radial feed being mounted on spinning roller arm
Realize internal rolling；Wherein traction mechanism blank installation position uses bearing, can contact in blank with mold after realizing blank installation
Frictional force effect under with mold rotation, while traction mechanism inner hollow passes through for spinning roller arm, real on same axis
Existing two kinds of axial movements；Traction mechanism by lead screw by be mounted on feed box servo motor driving, it can be achieved that axial position,
The accurate and PLC technology of movement velocity；And spinning roller arm is mounted on spinning roller arm seat, together by lead screw by being mounted on feeding
Servo motor on case drives the accurate and PLC technology, it can be achieved that axial position, movement velocity.
5th step carries out machine adduction heat treatment to the band inner and outer ring reinforcing rib cylinder of the 4th step mould pressing.
Turnery processing: by product using outer diameter as benchmark centering after cut both ends surplus and carry out the special constructions such as hole, slot and add
Work makes product meet design requirement.
Heat treatment: removing Final Heat Treatment Process for the selection of specific material, guarantees that product condition of heat treatment meets design and wants
It asks.
The spinning machine, including spindle box, mold transmission cylinder, rotary wheel mechanism, traction mechanism, binder ring and numerical control machine
Bed lathe bed, rotary wheel mechanism includes spinning roller head mechanism, spinning roller radial feed structure, spinning roller arm, spiral arm seat, axial feed structure, is led
Drawing mechanism includes traction mechanism rotor, traction mechanism rotor bearing, traction mechanism seat, traction mechanism axial feed structure,
Mold transmission cylinder is mounted on main shaft of numerical control machine tool, and mold is mounted on mold transmission tube inner chamber front end, and traction mechanism rotor is logical
Traction mechanism rotor bearing to be crossed to be mounted in traction mechanism seat, traction mechanism seat is mounted on the guide rail of numerically-controlled machine tool lathe bed,
Blank is mounted on traction mechanism rotor by binder ring, and traction mechanism seat realizes axis by traction mechanism axial feed structure
To movement, spinning roller arm rear end is connected with spiral arm seat, front end and spinning roller head mechanism are connected, and spinning roller radial feed structure is mounted on spinning roller
In arm inner cavity, spinning roller head mechanism is connect with spinning roller radial feed structure, and spiral arm seat is mounted on the guide rail of numerically-controlled machine tool lathe bed, with
The connection of axial feed structure.
The spinning roller head mechanism is made of the circumferentially equally distributed spinning roller component of spinning roller head main body, drift and three groups, often
Group spinning roller component includes support rolling element, spinning roller, connecting rod and pitman shaft, and spinning roller head main body and the front end of spinning roller arm are connected, drift
It is triangular wedge structure for section, one end of connecting rod connect with support rolling element, the other end by pitman shaft is connected to spinning roller head
In main body, spinning roller is mounted in the middle part of connecting rod, and support rolling element is pressed on the inclined-plane of drift, drift rear end and spinning roller radial feed knot
Structure is connected.
The drift section is equilateral triangle, three vertex roundings.
Spring connects between adjacent links in the spinning roller head mechanism.
The axial feed structure includes axial feed lead screw and axial feed driving motor composition.
The traction mechanism axial feed structure includes traction mechanism axial feed lead screw and traction mechanism axial feed
Driving motor composition.
The spinning roller radial feed structure includes spinning roller radial feed screw and spinning roller radial feed driving motor composition.
Beneficial effects of the present invention:
(1) present invention uses internal rolling technology combination spinning with tension technology, realizes inside and outside modal circumferential stiffening rib same
Mold, with once-forming in spinning process, thoroughly solve using interior shear spinning or outer shear spinning process forming and
It is caused to use the problems such as valving die, die cost are high, production efficiency is low；
(2) present invention is axially moved it independently of each other with spinning roller by increasing axial traction movement, realizes spinning
Any selection and the optimization of spinning track of position cooperate, to make the outer modal circumferential stiffening rib and interior modal circumferential stiffening rib of any position
It can easily shape, technique can be substantially increased with the multiple outer modal circumferential stiffening ribs of progressive forming and multiple interior modal circumferential stiffening ribs
Adaptability, realize the product structure that prior art cannot achieve；
(3) present invention can long tubular within shaping length 2m using only the annular stepped core model of a length 400mm
Long barrel molds manufacture difficulty and manufacturing cost is greatly reduced in part, avoids that long mold stiffness is low, in the low influence of service precision
The problem of external reinforcing ribs concentricity, reduces mold resetting difficulty, improves service precision, provides for forming high-precision product
Guarantee；
(4) present invention optimizes product straightness precision and circularity precision by spinning with tension, is optimized by internal rolling and is produced
Product diameter accuracy and wall thickness accuracy, the especially diameter accuracy of external reinforcing ribs section, and further mentioned by the raising of mould and die accuracy
High product overall precision, to obtain the precision for being higher than traditional internal rolling, outside spinning；
(5) shape product interchangeability of the present invention is strong, can be used for passing through this similar to the long cylinder mould pressing of interior modal circumferential stiffening rib
Technique can make with interior modal circumferential stiffening rib long cylinder integral forming kind, comprehensive performance is good, forming accuracy is high, at low cost；
(6) of the invention may be implemented on same axis using spinning machine realizes two kinds of axial movements, is internal rolling, opens
Power spinning combination process using traction mechanism provide space, realize internal rolling traction mechanism and rotary wheel mechanism coaxial line and
Mutually indepedent movement, to realize that composite spinning technique provides guarantee；
(7) spinning machine of the present invention uses 120 ° of symmetrical three spinning rollers structures, reaches 2m, shear spinning power in jib length
Reach spinning roller head mechanism energy automatic centering in the case where more than ten tons and obtain the stress of balance, it is rigid that spinning system greatly improved
Degree；
(8) the cluster type cantilever design that built-in radial drive system is used in spinning machine master-plan of the present invention, solves
Rotary wheel mechanism functional component is more, working space narrow problem；
(9) spinning machine of the present invention is cooperated using drift and spinning roller component, the axis of numerical control, radial motion will accurately can be converted
Spinning roller head radial motion, realize spinning roller radial feed can accurate numerical control, so that it is accurate in small space to realize spinning roller
Axis, radial motion conversion, meet the accurate control of spinning roller radial feeds；
(10) spinning machine of the present invention is integrally axially moved carrier as spinning roller head mechanism and spinning roller arm using rotary wheel base, can
It realizes the axial feed motion that digitlization accurately controls, realizes spinning roller axial direction, collection of the radial feed function on same mechanism
At to realize that axial feed provides guarantee in internal rolling technique.
Detailed description of the invention
Fig. 1 is preparation technology figure of the present invention；
Fig. 2 is blahk structure figure of the present invention；
Fig. 3 is present invention band inner and outer ring reinforcing rib tube structure schematic diagram；
Fig. 4 is spinning machine schematic diagram of the present invention；
Fig. 5 is rotary wheel mechanism structural schematic diagram of the present invention；
Fig. 6 is that rotary wheel mechanism of the present invention and traction mechanism cooperate schematic diagram；
Fig. 7 is spinning roller header structure schematic diagram of the present invention；
Fig. 8 is that drift of the present invention and spinning roller component cooperate schematic diagram；
Fig. 9 is spinning track schematic diagram of the present invention；
Figure 10 is existing internal rolling device structure schematic diagram.
Specific embodiment
Below in conjunction with specific example and attached drawing, the present invention is described in detail.
Processing band inner and outer ring reinforcing rib cylinder as shown in Figure 3, factory length L1 are 1300mm, and length L2 is 150mm,
L3 is 175mm, L4 480mm, L5 743.75mm, L6 210mm, L7 380mm；Thickness T1 be 10mm, T2 7.5mm,
T3 is 10mm, T4 7.5mm, T5 10mm, T6 7.5mm, T7 10mm；Outer diameter φ D1 is 550mm, and φ D2 is 560mm；Work
Skill ring outer diameter φ D* is 562mm, and material is 5A06 aluminium alloy.
Processing technology by following steps as shown in Figure 1, realized:
1, Blank Design
By spinning blank 5 be designed as one end as shown in Figure 2 have evagination technique ring straight tubular construction, wall thickness t1 according to
It calculates and determines according to reinforcing rib section and covering section reduction, 5 length of blank is according to constant-volume principle and considers reserved process allowance
Obtained by product COMPREHENSIVE CALCULATING, outer diameter φ D is determined according to the swollen diameter rule of internal rolling.Detailed process is as follows:
(1) as shown in Figure 2, a height of 2.5mm of external reinforcing ribs section muscle is 1:4 with place section thickness ratio, according to guarantee this section rotation
There is 12% or more reduction when pressure to guarantee that external reinforcing ribs are bonded the sufficient design principle of ladder die, this section of blank thickness is extremely
It should be 11.36mm, less to guarantee that external reinforcing ribs shape；
(2) determine that covering section and the distribution of interior reinforcing rib section reduction, distribution principle are that covering section reduction is no more than the limit
Reduction, and under the premise of interior reinforcing rib section reduction can guarantee the sufficiently swollen diameter of this section, mold, covering section reduction is improved, drop
Low interior reinforcing rib section reduction.According to each section of thickness T1-T7 of product it is found that covering section thickness differs 2.5mm with interior reinforcing rib section,
Limit attenuating rate is within 40% when 5A06 aluminium alloy inward turning, and swollen diameter fitting mould may be implemented 10% or more in drafts
Tool, meanwhile, comprehensively considering blank thickness identified above should be not less than 11.36mm, thus designs covering section reduction 36.4%,
Interior reinforcing rib section reduction 15.3%, external reinforcing ribs section reduction 15.3% determine that 5 non-uniform thickness t1 of blank is 11.8mm, symbol
Close reduction distribution principle；
(3) according to final product structure and the blank thickness t1 having determined, hair is calculated according to spinning constant-volume principle
5 theoretical length of base is 1012mm, evagination technique ring one end need to reserve 40mm length surplus for install positioning, the other end need to reserve
20-40mm process allowance prevents oral area from deforming dramatic impact Product Precision, thus determines that blank length L is 1082mm, in addition outer
Convex technique ring length, 5 overall length of blank are 1088mm.
(4) 5 outer diameter φ D of blank is mainly by between straightway 31 outside product outer diameter, spinning is swollen mass runoff, blank 5 and ladder die
Three parameters of gap determine that wherein the swollen mass runoff of spinning is related with material physical property, grope to determine that knowing is 0.3mm by test,
And blank 5 and outer 31 gap of straight length portion of ladder die take 0.4mm, therefore 5 outer diameter φ D of blank is designed as 549.3mm.
(5) blank is processed
The seamless tubular goods purchased from producer is processed into predetermined size, shape by method for turning, has evagination technique ring
One end requires connection ring two sides to all have higher level degree precision, and other end outer circle falls 2 × 30 ° of chamferings, installs convenient for blank.
5 processing dimension of blank, required precision are as follows:
Evagination technique ring thickness: 6mm；
Evagination technique ring outer diameter: φ 562mm
Evagination technique ring two sides flatness: 0.1mm
Wall thickness tolerance: 0.2mm；
Diameter tolerance: 0.3mm.
2, destressing is handled
Specification is handled according to aluminum alloy heat, blank 5 is heat-treated using following heat treating regime, with drop
5 intensity of blank, meets spinning requirement:
Equipment for Heating Processing: aluminium alloy heating treatmentfurnace, temperature-controlled precision are not more than ± 5mm；
Heating mode: it heats up with furnace；
Holding temperature: 320 DEG C；
Soaking time: 1.5h；
The type of cooling: it comes out of the stove after cooling to 260 DEG C with the furnace.
3, spinning Trajectory Design
Spinning track as shown in Figure 9 is designed, enters to revolve section 501, positioning section 502, interior reinforcing rib section 503, covering and adds with interior
Strengthening tendons changeover portion 504, covering section 505,506 forming mode of external reinforcing ribs section design reduction, the drafts of each section of spinning, complete
At spinning Trajectory Design, forming process is determined.Detailed process is as follows:
(1) enter to revolve section 501 to shape using internal rolling mode, i.e., traction mechanism is motionless, and spinning roller is moved to major axes orientation, enters
Close to main shaft side sideline 10mm in ladder die and away from external reinforcing ribs section part 32 in ladder die, track form is rotation point
Long 15mm, entering to spin up point drafts is -0.5mm, enters to revolve the slope form that terminal reaches 502 drafts of positioning section；
(2) positioning section 502 is shaped using internal rolling mode, length 30mm, drafts and product first segment, i.e., interior reinforcing rib
503 drafts of section are consistent, start spinning with tension after the completion of 502 spinning of positioning section, i.e. spinning roller axial position is motionless, traction mechanism
9 traction blanks 5 are moved along with main shaft opposite direction according to setting speed；
(3) interior reinforcing rib section 503 carries out spinning in ladder die China and foreign countries straight length portion 31, using straight path, pressure
Amount is determined according to product thickness, spinning rebound amount, wherein spinning rebound amount is groped to be determined as 0.15mm, drafts by test
1.95mm is taken, interior 503 length of reinforcing rib section calculates gained by product according to constant-volume principle；
(4) covering section and interior reinforcing rib changeover portion 504 are in the progress spinning of ladder die China and foreign countries straight length portion 31, using oblique
Slope formula track, interior 503 two sides cusp of reinforcing rib is natural shaped, and slope section drafts and interior reinforcing rib section 503 are consistent；
(5) covering section 505 carries out spinning in ladder die China and foreign countries straight length portion 31, using straight path, drafts according to
It is determined according to product thickness, spinning rebound amount, wherein spinning rebound amount is groped to be determined as 0.2mm by test, and pressure measures
4.5mm, 505 length of covering section calculate gained by product according to constant-volume principle；
(6) the external reinforcing ribs section part 32 in ladder die of external reinforcing ribs section 506 carries out spinning, and dragger is used when spinning
Structure 9,7 cooperative movement track of spinning roller arm, i.e., after the 506 one section of covering section spinning in front of completion external reinforcing ribs, spinning roller 403 is radially withdrawn
To home, traction mechanism 9 draws blank 5 and moves alone to external reinforcing ribs axially along with main shaft opposite direction close to evagination work
Skill ring one end end face in mold and away from die face 5-10mm at, spinning roller arm 7 is moved to starting point in step (1), using step
(1) mode enters rotation, and the mode spinning external reinforcing ribs section positioning section according to step (2), drafts and external reinforcing ribs section one
It causes；External reinforcing ribs section spinning with tension, drafts 1.95mm are carried out later；After external reinforcing ribs section spinning, 9 axis of traction mechanism
To stopping, using internal rolling mode, according to drafts, that is, 4.5mm of the subsequent covering section of external reinforcing ribs section, by 7 inward turning of spinning roller arm
It is fed into step (2) spinning with tension starting point, then carries out spinning with tension, completes each section of spinning below.
5, spinning
The blank 5 handled according to step 2 destressing is installed on spinning machine, the spinning determined according to step 3
Track carries out composite spinning.
Spinning machine is as shown in figure 4, include spindle box 1, mold transmission cylinder 2, rotary wheel mechanism, traction mechanism 9, binder ring 10
With numerical control bed piece 11, mold transmission cylinder 2 is mounted on main shaft of numerical control machine tool, before mold 3 is mounted on 2 inner cavity of mold transmission cylinder
End, rotary wheel mechanism, traction mechanism 9 are mounted on numerically-controlled machine tool lathe bed 11.
Traction mechanism 9 is as shown in fig. 6, include traction mechanism rotor 901, traction mechanism rotor bearing 902, dragger
Structure seat 903, traction mechanism axial feed lead screw 904 and traction mechanism axial feed driving motor 905, traction mechanism rotor
901 are mounted in traction mechanism seat 903 by traction mechanism rotor bearing 902, and traction mechanism seat 903 is mounted on numerically-controlled machine tool
On the guide rail of lathe bed 11, blank 5 is mounted on traction mechanism rotor 901 by binder ring 10, and traction mechanism seat 903 is by leading
Draw mechanism axial direction feed screw 904 and traction mechanism axial feed driving motor 905 is realized and is axially moved.
Rotary wheel mechanism is as shown in Figure 5,6, including spinning roller head mechanism 4, spinning roller radial feed screw 12, spinning roller radial feed drive
Dynamic motor 13, spinning roller arm 6, spiral arm seat 7, axial feed lead screw 14, feed box 8 and axial feed driving motor 15, feed box 8 are solid
Be scheduled on 11 tail end of numerically-controlled machine tool lathe bed, inside axial feed driving motor 15 is installed, center line and machine tool chief axis center
Line is overlapped；Spiral arm seat 7 is mounted on the guide rail of numerically-controlled machine tool lathe bed 11, and center line is overlapped with machine tool chief axis center line, is passed through
Axial feed lead screw 14 is connected with feed box 8, spiral arm seat 7 can be made to make speed, position by numerical control programming driving axial feed screw 14
Set the axial feed motion accurately controlled；Spinning roller arm 6 is fixed by screws in spiral arm seat 7, in center line and machine tool chief axis
Heart line is overlapped, and is divided into several segments, is connected by screw bolts, inner hollow, for placing spinning roller radial feed driving motor 13,
And it can the demolition and maintenance at segmentation；Spinning roller radial feed driving motor 13 is fixed on 6 inner cavity of spinning roller arm close to spinning roller head mechanism 4 one
End；12 one end of spinning roller radial feed screw and spinning roller head mechanism 4 are connected, and the other end is pacified by spinning roller radial feed driving motor 13
Mounted in 6 inner cavity of spinning roller arm, spinning roller radial feed screw 12 can be driven to move by numerical control programming.
Spinning roller head mechanism 4 is as shown in fig. 7, by three groups of circumferentially equally distributed spinning roller components, spinning roller head main body 406 and drift
401 compositions, every group of spinning roller component include support rolling element 402, spinning roller 403, connecting rod 404 and pitman shaft 405, spinning roller head main body
406 are connected by screw and spinning roller arm 6, and spinning roller 403 is connected in spinning roller head main body 406 by connecting rod 404 and pitman shaft 405,
Spring is connected between adjacent links 404, effect is that spinning roller is made to keep tightening in nature；Spinning roller radial feed screw 12
It is connect with 401 one end of drift.Connecting rod 404 is three-link structure, will for connecting support rolling element 402 and spinning roller head main body 406
The axial movement of drift 401 passes to spinning roller 403.
For drift 401 as shown in figure 8, section is the triangular wedge structure of equilateral triangle, three vertex roundings effectively prevent phase
Movement interference between neighbour's support rolling element 402, drift 401 are placed between the inside of spinning roller head main body 406, three connecting rods,
It is connected by spinning roller radial feed screw 12 with the servo motor being placed on inside spiral arm, servo motor drives lead screw rotation,
And then drift 10 is driven to be axially moved；And when the axial movement of drift 401, the support that 3 inclined-planes are connect with 404 front end of connecting rod rolls
The radial motion of spinning roller 403 is realized in the contact of body 402, can between the amount of axial movement of drift 401 and the radial feeds of spinning roller 403
It by mathematical computations, the proportionate relationship of Cheng Yiding, and is reflected in numerical control program control, realizing 403 radial feed of spinning roller can
Numerical control programming control.
Spinning process draws blank 5 by traction mechanism 9 and realizes axial tensile force, real by the spinning roller 403 being mounted on spinning roller arm 6
Existing internal rolling；Wherein 5 installation position of blank uses bearing on traction mechanism 9, and realizing can be in blank 5 and mold 3 after blank 5 is installed
It is rotated under the frictional force effect of contact with mold 3, while 9 inner hollow of traction mechanism passes through for spinning roller arm 6, in same axis
Two kinds of axial movements are realized on line；Traction mechanism 9 by lead screw by be mounted on feed box 8 servo motor driving, it can be achieved that
The accurate and PLC technology of axial position, movement velocity；And spinning roller arm 6 is mounted on spinning roller arm seat 7, together by lead screw by
The servo motor being mounted on feed box 8 drives the accurate and PLC technology, it can be achieved that axial position, movement velocity.
When work, by blank 5 by binder ring 10, it is pressed on traction mechanism 9 by screw connection manner, is with spinning track
Traction mechanism 9 is moved to and has made a reservation for revolve position, starts spinning by basic engineering spinning program.Spinning program finishes execution, by work
Part removes.
Detailed process is as follows:
(1) evagination technique ring is pressed on dragger by binder ring 10 between traction mechanism 9 and mold 3 by the lifting of blank 5
9 end face of structure, blank 5 is put into mold 3 it is concordant with die face to 5 axial centerline of blank, pass through binder ring 10 adjust blank
Radial and axial positioning is realized in axial position and fixation；
(2) press track based on establishment spinning program make liftout, pre-rotation, along the movements such as desired trajectory spinning, stoppings oneself
Dynamic to execute, basic technological parameters are as follows:
The speed of mainshaft: 100r/min；
Enter to revolve section inward turning feed speed: 60mm/min；
Positioning section inward turning feed speed: 80mm/min；
Hauling speed: 80mm/min.
(3) spinning program starts spinning；
(4) it is finished, hangs tight product with crane, dismantle binder ring 10, dismantle product.
5, it processes
By product using outer diameter as benchmark centering after cut both ends surplus, so that product is met design requirement.
6, it is heat-treated
Specification is handled according to aluminum alloy heat, blank 5 is heat-treated using following heat treating regime, with drop
5 intensity of blank, meets spinning requirement:
Equipment for Heating Processing: aluminium alloy heating treatmentfurnace, temperature-controlled precision are not more than ± 5mm；
Heating mode: it heats up with furnace；
Holding temperature: 320 DEG C；
Soaking time: 1.5h；
The type of cooling: it comes out of the stove after cooling to 260 DEG C with the furnace.
Unspecified part of the present invention is known to the skilled person technology.
Claims (9)
1. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib, which is characterized in that realized by following steps:
The first step, the blank of straight tubular construction of the processing one end with evagination technique ring；
Second step, blank destressing processing；
Third step determines spinning track,
Spinning track includes into revolving section, positioning section, covering section, covering and interior reinforcing rib changeover portion, interior reinforcing rib section and outer reinforcement
Muscle section；
4th step, spinning,
A4.1, the blank handled through second step is installed on spinning machine,
The spinning machine includes spindle box (1), mold transmission cylinder (2), rotary wheel mechanism, traction mechanism (9), binder ring (10)
With numerical control bed piece (11), blank (5) is mounted on traction mechanism (9) by binder ring (10), and ladder die (3) is mounted on
Mold transmission cylinder (2) inner cavity front end, traction mechanism (9) drive blank to be axially moved to ladder die (3), and ladder die is by outer
Reinforcing rib part and outer straight length portion composition；
A4.2, it is manufactured into rotation section,
Enter to revolve section in the outer straight length portion of ladder die using internal rolling；
A4.3, processing positioning section,
Positioning section uses internal rolling in the outer straight length portion of ladder die；
A4.4, covering section or the processing of interior reinforcing rib section,
Covering section and interior reinforcing rib section are processed in the outer straight length portion of ladder die using spinning with tension, and spinning with tension refers to rotation
Wheel mechanism axial static stops, and traction mechanism draws blank and is axially moved along with main shaft opposite direction, and wheel device uses inward turning technique
Spinning；
A4.5, covering and interior reinforcing rib changeover portion are processed,
Covering and interior reinforcing rib changeover portion process using spinning with tension in the outer straight length portion of ladder die, and covering is reinforced
Muscle changeover portion uses ramp type track；
A4.6, the processing of external reinforcing ribs section, external reinforcing ribs section enter to revolve section, external reinforcing ribs positioning section, external reinforcing ribs master by external reinforcing ribs
Positioning section forms after body section and external reinforcing ribs, and external reinforcing ribs section carries out spinning, outer reinforcement in the external reinforcing ribs part of ladder die
Positioning section is used using inward turning technique spinning, external reinforcing ribs main paragraph after muscle enters to revolve section, external reinforcing ribs positioning section and external reinforcing ribs
Spinning with tension processing；
A4.7, according to the structure with interior external reinforcing ribs cylinder final products, repeat step A4.2~A4.6 until completing entire band
The forming of inner and outer ring reinforcing rib cylinder；
5th step carries out machine adduction heat treatment to the band inner and outer ring reinforcing rib cylinder of the 4th step mould pressing.
2. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 1, it is characterised in that: institute
Blahk structure in the first step is stated to realize by following steps:
A2.1, blank thickness t1 is determined,
Reduction and covering section and the distribution of interior reinforcing rib section reduction, external reinforcing ribs when determination basis includes external reinforcing ribs section spinning
Reduction is greater than 12% when section spinning, and covering section and interior reinforcing rib section reduction distribution principle are that covering section reduction is no more than pole
Reduction is limited, interior reinforcing rib section reduction improves covering section reduction while guaranteeing sufficiently swollen diameter and mold, reduces and reinforce
Muscle section reduction；
A2.2, the theoretical length L for determining blank,
According to the blank thickness t1 determined with inner and outer ring reinforcing rib cylinder final product structure and step A2.1, according to spinning volume
Principle of invariance obtains blank theoretical length, evagination technique ring one end installation positioning surplus of blank, and the other end reserves process allowance；
A2.3, formula is utilizedDetermine blank outer diameter φ D, wherein Φ D1Most for band inner and outer ring reinforcing rib cylinder
The outer diameter of finished product, ε are the swollen mass runoff of spinning,For the gap of straight length portion outside blank and ladder die.
3. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 1, it is characterised in that: institute
Stating the rotary wheel mechanism in step A4.1 includes spinning roller head mechanism (4), spinning roller radial feed structure, spinning roller arm (6), spiral arm seat (7)
With axial feed structure, traction mechanism (9) includes traction mechanism rotor (901), traction mechanism rotor bearing (902), leads
Draw mechanism seat (903) and traction mechanism axial feed structure, mold transmission cylinder (2) is mounted on main shaft of numerical control machine tool, mold (3)
It is mounted on mold transmission cylinder (2) inner cavity front end, traction mechanism rotor (901) is pacified by traction mechanism rotor bearing (902)
In traction mechanism seat (903), traction mechanism seat (903) is mounted on numerically-controlled machine tool lathe bed (11), and blank (5) passes through binder
Ring (10) is mounted on traction mechanism rotor (901), and traction mechanism seat (903) is realized by traction mechanism axial feed structure
It is axially moved, spinning roller arm (6) rear end is connected with spiral arm seat (7), front end and spinning roller head mechanism (4) are connected, spinning roller radial feed knot
Structure is mounted in spinning roller arm (6) inner cavity, and spinning roller head mechanism (4) is connect with spinning roller radial feed structure, and spiral arm seat (7) is mounted on number
The upper of bed piece (11) is controlled, is connect with axial feed structure.
4. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 3, it is characterised in that: institute
The spinning roller head mechanism (4) stated is made of spinning roller head main body (406), drift (401) and three groups of circumferentially equally distributed spinning roller components,
Every group of spinning roller component includes support rolling element (402), spinning roller (403), connecting rod (404) and pitman shaft (405), spinning roller head main body
(406) it is connected with the front end of spinning roller arm (6), drift (401) is that section is triangular wedge structure, one end of connecting rod (404) and branch
Support rolling element (402) connection, the other end are connected in spinning roller head main body (406) by pitman shaft (405), spinning roller (403) installation
In the middle part of connecting rod (404), support rolling element (402) is pressed on the inclined-plane of drift (401), and drift (401) rear end and spinning roller are radial
Feeding structure is connected.
5. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 3, it is characterised in that: institute
Drift (401) section stated is equilateral triangle, three vertex roundings.
6. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 3, it is characterised in that: institute
Spring connects between adjacent links (404) in the spinning roller head mechanism (4) stated.
7. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 3, it is characterised in that: institute
The axial feed structure stated includes axial feed lead screw (14) and axial feed driving motor (15).
8. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 3, it is characterised in that: institute
The traction mechanism axial feed structure stated includes traction mechanism axial feed lead screw (904) and traction mechanism axial feed driving electricity
Machine (905).
9. a kind of cylinder internal rolling manufacturing process with inner and outer ring reinforcing rib according to claim 3, it is characterised in that: institute
The spinning roller radial feed structure stated includes spinning roller radial feed screw (12) and spinning roller radial feed driving motor (13).
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| CN112496193A (en) * | 2020-11-03 | 2021-03-16 | 西安近代化学研究所 | Arc generating line curved surface cylinder roll-welding forming device |
| CN113020386A (en) * | 2021-03-01 | 2021-06-25 | 上海交通大学 | Multi-stage external rib cylinder rotary extrusion forming equipment and method |
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| CN109794538B (en) | 2020-10-16 |
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