CN107186334A - Method for the rivet arrangement and its riveting steel aluminium laminated plate of spin friction punching press - Google Patents
Method for the rivet arrangement and its riveting steel aluminium laminated plate of spin friction punching press Download PDFInfo
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- CN107186334A CN107186334A CN201710485493.6A CN201710485493A CN107186334A CN 107186334 A CN107186334 A CN 107186334A CN 201710485493 A CN201710485493 A CN 201710485493A CN 107186334 A CN107186334 A CN 107186334A
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- stirring
- head
- rivet
- rotary punching
- nail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/02—Riveting procedures
- B21J15/027—Setting rivets by friction heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/20—Ferrous alloys and aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention discloses a kind of rivet arrangement for spin friction punching press and its method for riveting steel aluminium laminated plate, the rivet arrangement includes rotary punching nail, stirring-head and mould, the rotary punching nail includes solid rivet body and rivet cap, the lower end of the rivet body is circumferentially arranged with screw thread, the upper end of the rivet cap is circumferentially uniformly provided with multiple wedge-shaped indentations, edge of the wedge-shaped indentation along rivet cap is inwardly opened up, and the center of the rivet cap is provided with the cylinder shape groove for positioning；The bottom of the stirring-head is provided with the cylindrical boss with multiple wedge-shaped boss of the multiple wedge-shaped indentation phase configuration and with the cylinder shape groove phase configuration；The mould is by the way of the matched moulds of left and right, and it includes offering half up-small and down-big round platform connected in star on two half modules, the binding face of two half modules.The present invention integrates the metallurgical riveting mode of press self-locking, it is possible to achieve direct between aluminium alloy and steel, quick, high intensity connection.
Description
Technical field
The invention belongs to agitating friction riveting technology field, and in particular to a kind of rivet arrangement for spin friction punching press
And its method for riveting steel aluminium laminated plate.
Background technology
Application of the aluminium alloy in body material is to realize the light-weighted important channel of vehicle structure, with auto manufacturing
The middle purpose for realizing energy-conserving and environment-protective.Resistance spot welding is main connected mode in body of a motor car assembling, due to aluminium alloy with
High-strength steel thermophysical property difference is big, and hard and crisp intermetallic compound is easily formed during melting welding, using traditional resistor spot welding
Technique is difficult to connection.Agitating friction weldering (Friction Stir Welding, abbreviation FSW) compared with traditional fusion welding, its
Joint has the advantages that tiny crystal grain and fatigue behaviour, tensile property and bending property are good, in addition, welding point will not be produced
The weld defects such as raw crackle, stomata and the alloying element scaling loss relevant with fusing, however, due between metal solid solubility it is low, hot thing
Rationality energy otherness is big, and particularly the agitating friction weldering between steel aluminium easily generates weld metal zone brittle intermetallic thing so as to steel aluminium
When being stirred friction welding, joint mechanical property can be influenceed.
For the connectivity problem of above-mentioned dissimilar metal, foreign countries propose self-piercing riveting (Self-Piercing Riveting,
Abbreviation SPR) mechanical joining methods.SPR is it is possible to prevente effectively from conventional fused be welded in connection light metal alloy material, dissimilar metal
The a series of problems that may be faced when material and painting matcoveredn sheet metal, but in difficult-to-deformation materials such as riveting high strength steels
When, because material resistance of deformation is big, jumping-up phenomenon may occur for rivet, it is difficult to penetrate sheet material to fail preferably to form machinery
Self-locking, meanwhile, at riveting, lower floor's sheet material can be by great local deformation, if lower sheet material is steel class or other plasticity and change
The poor material of shape ability, then may be cracking at riveting.
A kind of Friction bit joining works of Publication No. US2011073634-A1 U.S. Patent Application Publications
One solid nail with the shaft shoulder is inserted top plate by skill, the technique, and nail penetrates top plate and forms solid phase with lower plywood
Connection, then top plate formation mechanical connection is blocked by shaft shoulder application pressure.However, there is following two ask in this connected mode
Topic：1. rivet is longer the time required to the process for arranging and blocking upper strata sheet material with the shaft shoulder, and the rivet force of required offer
Larger, economy is bad；2. the opposition that the shaft shoulder is born is excessive, easily it is deformed the shaft shoulder of rivet, so as to influence
The intensity of mechanical connection.Publication No. CN2014800626386 Chinese invention patent application discloses a kind of self-punching rivet, should
Rivet is provided with spiral rib in the external peripheral surface of shank portion on along its length, uses this rivet punching press riveting
Connect, counter-force suffered by spiral rib can be caused excessive, and easily cause rib fracture in link position, influence
Joint quality.
In order to solve the problem of above-mentioned self-piercing riveting is present, the country proposes a kind of agitating friction drag rivet joint (FSBR) one side
Connection method (bibliography：Li Boqiang, any forces power magnesium-steel agitating friction drag rivet joint research [C] // central and west regions physics and chemistry inspection
Test Annual Conference and Laboratory Chief's experience exchangement can .2014.), this method is rotated using rivet in workpiece lap-joint, make its with
Friction of workpiece produces heat so that joint temperature is raised rapidly, and workpiece shear yield strength is reduced rapidly, treats that rivet is worn completely
Cross after workpiece, pull riveting core, workpiece is closely linked.However, this method is in riveting process, blind rivet institute it is loaded and
Moment of torsion is larger, easily causes blind rivet fracture damage, and unstable phenomenon easily occurs in rotary course for rivet, influences joint matter
Amount.
Existing agitating friction clinching method has higher requirement to the swivel rivets and technical process of use.Riveting process
In, the rivet and the rubbing surface of sheet material rotated due to high speed is annular or circular, and in the presence of frictional force, rivet may
Unstable phenomenon is rotated, so as to cause riveting to fail.Therefore, it is necessary to set positioning to tie in the riveting process of high speed rotation
Structure, the moment keeps rivet axis and rotation axis coincident, just can guarantee that the quality of joint, and needs to ensure in agitating friction riveting
In termination process, rivet uniform force will not influence joint quality because of stress concentration.Simultaneously should on rivet surface and therewith
The stirring-head lower end being engaged processes convenient loading, withdrawing and the structure of rotation driving, be easy to ensure riveting process it is efficient,
Succinctly.
The content of the invention
It is an object of the invention to provide a kind of rivet arrangement for spin friction punching press and its riveting steel aluminium laminated plate
Method, it integrates punching press-mechanical self-latching-metallurgy-riveting mode, can solve steel aluminium welding when due between metal
Joint is brittle and influence joint mechanical property and cause joint to be also easy to produce because thermal expansion coefficient difference is excessive caused by compound
The problem of defect, and direct, quick, high intensity connection between aluminium alloy and steel can be realized.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of rivet arrangement for spin friction punching press, the rivet arrangement includes rotary punching nail, rushed with the rotation
Stirring-head that nail pressing is engaged and the mould being placed in below the rotary punching nail；
Rotary punching nail includes solid rivet body and is arranged on the rivet cap of the rivet body upper end, institute
The lower end of rivet body is stated circumferentially arranged with screw thread, the upper end of the rivet cap is circumferentially uniformly provided with multiple wedge-shaped indentations, institute
State edge of the wedge-shaped indentation along rivet cap inwardly to open up, the center of the rivet cap is provided with the cylinder shape groove for positioning；
The bottom of the stirring-head be provided with multiple wedge-shaped boss of the multiple wedge-shaped indentation phase configuration and with institute
The cylindrical boss of cylinder shape groove phase configuration is stated, the stirring-head realizes rotation under the cooperation of wedge-shaped boss and wedge-shaped indentation
The handling and rotation driving of punching press nail；
The mould is by the way of the matched moulds of left and right, and it includes offering on two half modules, the binding face of two half modules
Small lower half big round platform connected in star, two half modules fit together what the complete round platform connected in star to be formed just was being followed closely rotary punching
Lower section is set, for coordinating the rotary punching nail control material flowing.
By above-mentioned technical proposal, the wedge-shaped indentation includes being used to bear the first plane of circumferential moment of torsion and for withdrawing
Second plane, first plane and the second plane are oppositely arranged, and first plane is put down with the axis that the rotary punching is followed closely
OK, second plane is tilted from the upper table of the rivet cap towards the direction close to the first plane.
By above-mentioned technical proposal, the quantity of the wedge-shaped indentation is 4.
By above-mentioned technical proposal, the material of the rotary punching nail is carbon steel, stainless steel or high-strength steel.
By above-mentioned technical proposal, the surface of the rotary punching nail is provided with zinc or acieral coating.
By above-mentioned technical proposal, the material of the stirring-head is carbon steel, stainless steel or high-strength steel.
By above-mentioned technical proposal, the angle between the side and bottom surface of the round platform connected in star is 45 °~89 °.
A kind of method that steel aluminium laminated plate is riveted according to the above-mentioned rivet arrangement for spin friction punching press, including following step
Suddenly：
Before S1, riveting, rotary punching is followed closely to the top for the round platform connected in star for being vertically placed to mould, and stirring head erect is put
The top followed closely in rotary punching, makes it be axially moved and circumferentially rotate and is limited to the damping that it is appropriate that rotary punching follows closely application；
S2, driving stirring-head make its feeding and while rotate at a slow speed at a slow speed downwards, make cylindrical boss and the rotation of stirring-head
The cylinder shape groove for turning punching press nail is engaged automatically, with realize rotary punching nail from centering, while the wedge-shaped boss of stirring-head with
Rotary punching nail wedge-shaped indentation is in contact, and then drives stirring-head to rotate at a high speed and be downwardly applied to pressure, when stirring-head is to rotation
The axial compressive force and circumferential moment of torsion that punching press nail applies are more than when turning out-damping that punching press nail is subject to, and rotary punching is followed closely with stirring
Head is axially moved and circumferentially rotated；
S3, stirring-head drive rotary punching nail to continue to rotate and push at a high speed, make the lower surface that rotary punching is followed closely and steel aluminium
The upper surface of laminated plate is simultaneously rubbed, and local heating, steel aluminium lamination are implemented to riveting position with the amount of heat of generation
Plate is softened；
S4, in the presence of stirring-head is downwardly applied to pressure, rotary punching nail is by steel aluminium laminated plate high-speed punching press-in die
Round platform connected in star in, steel aluminium laminated plate forms mechanical self-latching in round platform connected in star, at the same rotary punching follow closely lower end screw thread
Under the cooperation that High Temperature And Velocity rotates, the coat of metal between steel aluminium laminated plate is melted and uniformly mixed between steel aluminium laminated plate
Close, complete metallurgical binding；
S5, stirring-head continue to rotate and push at a high speed, drive rotary punching nail by the screw thread anchoring of its lower end in steel aluminium
In laminated plate, steel aluminium laminated plate is set to realize screw connected mechanical self-latching, while ensureing that rotary punching nails on end face and folded with steel aluminium
The upper surface of laminate is overlapped；
After S6, control stirring-head slow down until stopping the rotation, continue to keep applying 1~5s of pressure, then rotate backward and stir
Head is mixed, withdrawing is completed；
S7, mould separated, complete the demoulding at riveting position.
By above-mentioned technical proposal, in step S2, the rotating speed of stirring-head rotation at a high speed is 100~2500r/min, described
Stirring-head downward pressure applied is 1000N-10000N.
The present invention, has the advantages that：The rivet arrangement between rotary punching nail and stirring-head by setting phase
The location structure (i.e. cylinder shape groove and cylindrical boss) mutually coordinated, can make it that rotary punching nail is coaxial all the time with stirring-head
The heart, to ensure stability during rotary riveting；The wedge shape of mutual cooperation is set to lack between stirring-head by being followed closely in rotary punching
Mouth and wedge-shaped boss, it is ensured that in agitating friction riveting process, rotary punching nail uniform force；Pass through what is followed closely in rotary punching
Lower end tapping, it is easier to entered in the case where high speed rotates with less resistance anchoring in steel aluminium laminated plate, reduces rotary punching nail
The phenomenon being upset, improves joint quality, and coordinates rotation and big calorimetric at a high speed, and screw thread can realize connecting material and spy
The uniform mixing of different coating, it is to avoid the formation of steel aluminium brittlement phase, metallurgical binding strength of joint is higher, is followed closely in rotary punching in addition
After rolling in steel aluminium laminated plate, screw thread can make to form screw connected mechanical self-latching between steel aluminium laminated plate, can significantly improve
Steel aluminium bonding strength and fatigue behaviour；The up-small and down-big round platform connected in star by being opened up on mould, can make steel aluminium laminated plate
Self-locking riveting is formed after high temperature and high speed press-in round platform connected in star.Using the rivet arrangement rivet steel aluminium laminated plate, can collect punching press-
The connected modes such as mechanical self-latching-metallurgy-riveting are integrated, it can steel aluminium laminated plate high temperature and high speed press-in die truncated cone-shaped
Self-locking riveting is formed during groove, the metallurgical binding of steel aluminium laminated plate and plating interlayer is realized so that rotary punching is followed closely and steel aluminium lamination
Plate shape is into screw connected mechanical self-latching, and these three connected modes are combined the reliability of technology that considerably increases joint and stably
Property.
The rivet arrangement is when riveting steel aluminium laminated plate, and the tapped rotary punching in its lower end is followed closely as mixing needle,
With the lower generation heat of steel aluminium lamination plate surface high speed rotary grinding effect, riveting position is set to produce plasticity under high temperature, sheet material high temperature
Good, steel aluminium laminated plate is formed into the round platform connected in star with mechanical self-latching angle function by rotary punching nail high speed stamping, together
When rotary punching follow closely the stirring of further high speed rotary grinding and penetrate in the steel aluminium laminated plate of connection, producing substantial amounts of heat folds steel aluminium
Zinc or acieral coating occur to melt and metallurgical binding are formed between laminated plate between laminate, finally rotate backward stirring-head, complete
Into withdrawing, rotary punching is followed closely into anchoring in steel aluminium laminated plate.This method is in the local high speed rotary grinding of aluminium lamination plate surface, material
Material softening plasticity is improved, effectively reduction plastic force and equipment tonnage, while reducing rotary punching nail loss；And high temperature bond is high
Fast punching press, material plasticity, which is not easily broken well, can shape the mechanical self-latching angle for obtaining larger angle.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the structural representation of rotary punching nail in the embodiment of the present invention；
Fig. 3 a are the top views of rotary punching nail in the embodiment of the present invention；
Fig. 3 b are the sectional views of the line A-A along along Fig. 3 a；
Fig. 3 c are the screw thread schematic diagrames at rotary punching nail tapping in the embodiment of the present invention；
Fig. 4 is the structural representation of stirring-head in the embodiment of the present invention；
Fig. 5 a are the schematic diagrames before the preceding rotary punching nail of riveting is engaged with stirring-head；
Fig. 5 b are the schematic diagrames after the preceding rotary punching nail of riveting is engaged with stirring-head；
Fig. 5 c are the schematic diagrames that rotary punching nail is contacted with steel aluminium laminated plate in riveting process；
Fig. 5 d are the schematic diagrames that steel aluminium laminated plate enters in the round platform connected in star of mould in riveting process；
Fig. 5 e are the schematic diagrames of packing stage after riveting；
Fig. 5 f are the schematic diagrames that riveting terminates the rear withdrawing stage；
Fig. 5 g are the schematic diagrames that riveting terminates rear ejection phase；
Fig. 6 is the schematic diagram of the riveted joint after riveting terminates.
In figure：100- rotary punchings are followed closely, 101- rivet bodies, 102- rivet caps, 103- screw threads, 104- wedge-shaped indentations,
105- cylinder shape grooves, the planes of 106- first, the planes of 107- second, 200- stirring-heads, 201- wedge shape boss, 202- circular cylindrical projections
Platform, 300- moulds, 301- round platform connected in stars.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
In the preferred embodiment, as Figure 1-Figure 4, a kind of rivet arrangement for spin friction punching press,
100 are followed closely including rotary punching, 100 stirring-heads 200 being engaged are followed closely with rotary punching and is placed in the lower section of rotary punching nail 100
Mould 300；
As shown in Fig. 2-Fig. 3 c, rotary punching nail 100 is including solid rivet body 101 and is arranged on rivet body
The rivet cap 102 of 101 upper ends, the lower end of rivet body 101 is circumferentially arranged with screw thread 103, and the upper end of rivet cap 102 is circumferentially equal
Even to be provided with multiple wedge-shaped indentations 104, edge of the wedge-shaped indentation 104 along rivet cap is inwardly opened up, and the center of rivet cap 102 is provided with use
In the cylinder shape groove 105 of positioning；
As shown in figure 4, the bottom of stirring-head 200 is provided with multiple wedge-shaped boss with multiple phase configurations of wedge-shaped indentation 104
201 and the cylindrical boss 202 with the phase configuration of cylinder shape groove 105, stirring-head 200 is in wedge-shaped boss 201 and wedge-shaped indentation
The handling and rotation driving of rotary punching nail are realized under 104 cooperation；
As shown in figure 1, mould 300 by the way of the matched moulds of left and right so as to after riveting process terminates be stripped, it includes two
Half up-small and down-big round platform connected in star is offered on individual half module, the binding face of two half modules, two half modules fit together to be formed
Complete round platform connected in star 301 just to rotary punching follow closely lower section set, for coordinate rotary punching nail control material flowing.
In a preferred embodiment of the invention, as shown in Fig. 2, Fig. 3 c, wedge-shaped indentation 104 includes being used to bear circumferential moment of torsion
The first plane 106 and the second plane 107 for withdrawing, the first plane 106 and the second plane 107 be oppositely arranged, and first is flat
Face 109 and rotary punching follow closely 100 diameter parallel, and the second plane 107 is from the upper table of rivet cap 102 towards close to the first plane
106 direction is tilted.
In a preferred embodiment of the invention, as shown in Fig. 2, Fig. 3 c, the quantity of wedge-shaped indentation 104 is 4.
In a preferred embodiment of the invention, the material of rotary punching nail is carbon steel, stainless steel or high-strength steel, it is preferred that
The surface of rotary punching nail is provided with zinc or acieral coating.
In a preferred embodiment of the invention, the material of stirring-head is carbon steel, stainless steel or high-strength steel.
In a preferred embodiment of the invention, as shown in figure 1, the angle between the side and bottom surface of round platform connected in star is
45 °~89 °.
A kind of method that steel aluminium laminated plate is riveted according to the above-mentioned rivet arrangement for spin friction punching press, such as Fig. 5 a- Fig. 6
It is shown, comprise the following steps：
S1, as shown in Figure 5 a, before riveting, rotary punching is followed closely the top for the round platform connected in star for being vertically placed to mould, and will
Stirring-head is vertically placed to the top of rotary punching nail, is axially moved it to the damping that it is appropriate that rotary punching follows closely application and turns with circumferential
It is dynamic to be limited；
S2, as shown in Figure 5 b, driving stirring-head makes its feeding and while rotate at a slow speed at a slow speed downwards, makes the cylinder of stirring-head
Shape boss is engaged automatically with the cylinder shape groove that rotary punching is followed closely, with realize rotary punching nail from centering, while stirring-head
Wedge-shaped boss and rotary punching nail wedge-shaped indentation are in contact, and then drive stirring-head to rotate at a high speed and be downwardly applied to pressure, when stirring
Mix that head follows closely rotary punching the axial compressive force applied and circumferential moment of torsion is more than when turning out-damping that punching press nail is subject to, rotary punching
Nail is as stirring-head is axially moved and is circumferentially rotated；
S3, as shown in Figure 5 c, stirring-head drives rotary punching nail to continue to rotate and push at a high speed, makes under rotary punching follows closely
The upper surface of end face and steel aluminium laminated plate simultaneously rubs, with the amount of heat of generation riveting position is implemented it is local plus
Heat, steel aluminium laminated plate is softened；
S4, as fig 5d, in the presence of stirring-head is downwardly applied to pressure, rotary punching nail by steel aluminium laminated plate at a high speed
It is stamped into the round platform connected in star of mould, steel aluminium laminated plate forms mechanical self-latching in round platform connected in star, while rotary punching is followed closely
The screw thread of lower end is under the cooperation that High Temperature And Velocity rotates, by the coat of metal fusing between steel aluminium laminated plate and in steel aluminium laminated plate
Between uniformly mix, complete metallurgical binding；
S5, as depicted in fig. 5e, stirring-head continues to rotate and push at a high speed, the screw thread for driving rotary punching nail to pass through its lower end
Anchoring makes steel aluminium laminated plate realize screw connected mechanical self-latching in steel aluminium laminated plate, while ensureing that rotary punching nails on end
Face is overlapped with the upper surface of steel aluminium laminated plate；
S6, as fig 5d, after control stirring-head slows down until stopping the rotation, continues to keep applying 1~5s of pressure, then
Stirring-head is rotated backward, withdrawing is completed, you can riveted joint as shown in Figure 5 is obtained.
S7, as shown in fig. 5g, mould is separated, and completes the demoulding at riveting position.
In step S2, the rotating speed that stirring-head rotates at a high speed is 100~2500r/min, and stirring-head downward pressure applied is
1000N-10000N。
The present invention rivet arrangement in specific application, as Figure 1-Figure 4, including rotary punching nail 100, can be with rotation
Stirring-head 200 and mould 300 that punching press nail 100 matches；The upper end of rotary punching nail 100 is machined with four wedge-shaped indentations 104
With a cylinder shape groove 105, lower end outer ring tapped 103, the upper end that the lower end of stirring-head 200 can be followed closely with rotary punching is matched somebody with somebody
Close；The lower end of stirring-head 200 is machined with for loading and unloading four wedge-shaped boss 201 and the cylinder of positioning with rotation driving
Boss 202；Up-small and down-big round platform connected in star 301 is offered on mould 300.
In the rivet arrangement, four wedge-shaped indentations and four wedge-shaped boss are uniformly distributed circumferentially, and both coordinate conduct
Rotary drive structure, rotary drive structure refers to perpendicular parallel with rotary punching nail rotation axis in wedge-shaped indentation, wedge
The perpendicular parallel with stirring-head rotation axis in shape boss, by the perpendicular of wedge-shaped boss to the vertical of wedge-shaped indentation
Plane applies circumferential moment of torsion, drives rotary punching nail rotation, wherein four wedge-shaped indentations and four wedge-shaped boss are circumferentially equal
Even distribution, and can cooperate.The upper transverse plane of rotary punching nail overlaps work with the lower end plane of stirring-head in engagement process
For filling structure, the plane of the coincidence is vertical with rotation axis, by stirring-head from pressure is swept away, applies axial to rotary punching nail
Load, the upper transverse plane of rotary punching nail is born by the pressure of the lower end plane application of stirring-head.Second in wedge-shaped indentation is flat
Face is engaged as withdrawing structure with the inclined-plane of corresponding wedge-shaped boss, after riveting process terminates, is stirred by turning clockwise
Head is mixed, that is, completes withdrawing.Cylindrical boss and cylinder shape groove along Central Symmetry and specular, are used as location structure.Stir
The outmost turns for mixing the wedge-shaped boss in a lower end are arc surfaces, and the circular arc radius surface is equal to the circular arc that rotary punching nails on end spherical part
Radius surface, after stirring-head and rotary punching, which are bound, matches somebody with somebody, outer surface is a complete arc surface.The rotation of the rivet arrangement is driven
Dynamic direction, loading and withdrawing direction are unique, and rotation driving direction refers to that stirring-head drives rotary punching nail rotate counterclockwise, loads
Direction refers to that stirring-head pushes rotary punching nail, and withdrawing direction refers to that stirring-head turns clockwise and departs from rotary punching nail.
In the rotary punching nail of the rivet arrangement, the race diameter of the column part of rivet cap is 5-10mm, preferably 10mm,
Its height is 1-2mm, preferably 2mm；A diameter of 5-10mm of the spherical part of rivet cap, preferably 10mm, its height are 3-4mm,
It is preferred that 3mm；Wedge-shaped indentation includes relative the first plane and the second plane, and the first plane is put down with rotary punching nail rotation axis
OK, for bearing circumferential moment of torsion, the second plane is tapered ramp, is tilted from rotary punching nail surface around rotation axis to lower end,
For withdrawing, the angle between the upper transverse plane of the second plane and rotary punching nail rivet cap is 30 ° -45 °, preferably 30 °, second
Angle between the inner wedge shape plate of plane and the straight flange of its underpart is 120 ° -150 °, preferably 120 °, in order to load and unload；Circle
Cylindrical groove is located at the center that rotary punching is followed closely, and depth is 2mm, and is coaxially disposed with rotary punching nail, to ensure rotary punching
The rotation axis of nail is overlapped with geometrical axis, and its coaxiality error is less than 0.012mm；A diameter of 5-8mm of rivet body, preferably
7mm, is highly 8-10mm, preferably 8mm；The pitch P of screw thread be 0.5mm, thread depth H be 0.433mm, big footpath d be 5-8mm,
It is preferred that 7mm, path d1 are 4-7mm, preferably 6.45mm, central diameter d2 is 6.67mm, and thread form angle is 0 ° -60 °, preferably 60 °, is highly
5mm, reach is 5-10mm, for the threaded connection through between formation plate during steel aluminium laminated plate；Fall rotary punching nail bottom
There is oblique cone angle, the angle between oblique cone angle bus and rotary punching nail rotation axis is 45 ° -60 °, and preferably 45 °, its summit is away from outer
The radial distance of wall is 0.5-1.5mm, preferably 1.5mm；Rotary punching nail material is high-strength steel, and surface is coated with the zinc of 10 μ m-thicks
Alloy layer.
Accordingly, in the stirring-head of the rivet arrangement, between the tapered ramp and stirring-head lower end plane of wedge-shaped boss
Angle is 30 ° -45 °, preferably 30 °；The angle between wedge shape plate and bottom straight flange in wedge-shaped boss is 120 ° -150 °, excellent
Select 120 °；The height of cylindrical boss is 1.5mm, and is coaxially disposed with stirring-head, and its coaxiality error is less than 0.012mm；Stir
A material is mixed for high-strength steel, surface does not have coating.In assembling, rotary punching nails on end cylinder shape groove to be justified with stirring-head lower end
The coaxiality error of cylindrical end tangs is less than 0.0014mm.
In the mould of the rivet arrangement, the angle between the side and bottom surface of round platform connected in star is 45 ° -89 °, preferably 45 °,
Groove depth is 10-15mm, preferably 12mm, and port diameter is 30-40mm, preferably 30mm, its bottom 10mm of falling diameter fillet thereon.
In specific application, steel aluminium laminated plate is upper strata aluminium alloy 2024-O plates and lower floor high-strength steel DP540 to the present invention
Plate, panel thickness is respectively 5mm and 7mm, and wherein lower floor's plate surface is coated with the zn alloy coating of 10 μ m-thicks, and it includes following
Step：
S1, by applying appropriate damping, by rotary punching nail just to placing below stirring-head, both geometrical axis weights
Close, the axial movement of rotary punching nail is limited with circumferential movement；
S2, it is manually operated structure to adjust the position of stirring-head, location structure is engaged and stirring-head lower end
Wedge-shaped boss engaged with the wedge-shaped indentation that rotary punching nails on end, realize rotary punching nail from centering；
S3 and then starting switch, stirring-head start to drive rotary punching nail to overcome damping rotary, and velocity of rotation is 2000r/
Min, while applying 5000N pressure；
S4, rotary punching nail rotate at a high speed, and its lower end rubs with sheet material, and the substantial amounts of heat of generation produces riveting position
Raw localized hyperthermia, sheet material is softened, and plasticity is greatly improved；
S5, by stirring-head apply pressure, rotary punching nail by steel aluminium laminated plate high-speed punching be pressed into 60 ° machinery from
In the round platform connected in star of locking angle degree, the mechanical self-latching of laminated plate formation larger angle, while rotary punching nail lower end screw thread coordinates
High Temperature And Velocity rotates, and the coat of metal between laminated plate is melted and is uniformly mixed with connecting material, completes metallurgical binding；
S6, stirring-head continue to rotate and push, and rotary punching nail in steel aluminium laminated plate, is realized by lower end screw thread anchoring
The threaded connection of laminated plate, while ensureing that rotary punching nails on transverse plane and overlapped with upper plate plane；
After S7, control stirring-head slow down until stopping the rotation, continue to keep applying pressure 3s, then rotate backward stirring
Head, completes withdrawing；
S8, mould separated, complete the demoulding at riveting position.
The present invention is main to include four steps when riveting steel aluminium laminated plate：1. be stirred frictional rivet joints, control is stirred
Mix a rotate counterclockwise and push；2. completing after riveting, continue pressurize 1-5s；3. during withdrawing, control stirring-head turns clockwise；
4. last, rotary punching nail is stayed in riveted joint.
The present invention has advantages below：(1) engagement with stirring-head location structure is followed closely by rotary punching, rotation can be kept
Punching press nail axis is vertical with rotary shaft, it is ensured that stability during rotary riveting；(2) four wedge-shaped indentations and wedge-shaped boss are passed through
Engagement, it is ensured that in agitating friction riveting process, rotary punching nail uniform force；(3) local high speed rotary grinding, material softening modeling
Property improve, effective reduction plastic force and equipment tonnage, while reducing rotary punching nail loss；(4) high temperature bond high speed stamping, material
Material plasticity, which is not easily broken well, can shape the mechanical self-latching angle for obtaining larger angle；(5) rotary punching nail lower end is tapped with special
Screw thread, it is easier to which rotation is entered in steel aluminium laminated plate with less resistance anchoring at a high speed, what reduction rotary punching nail was upset shows
As improving joint quality；The presence of screw thread simultaneously coordinates the rotation and big calorimetric of high speed to realize connecting material and special
The uniform mixing of coating, it is to avoid the formation of steel aluminium brittlement phase, metallurgical binding strength of joint is higher；(6) last rotary punching nail nail
Roll in steel aluminium laminated plate, its lower end screw thread makes to form screw connected mechanical self-latching between steel aluminium laminated plate, can significantly improve
Steel aluminium bonding strength and fatigue behaviour；(7) by steel aluminium laminated plate, high temperature and high speed is pressed into cavity plate formation self-locking riveting, steel aluminium simultaneously
The metallurgical binding of laminated plate and plating interlayer, rotary punching nail forms screw connected mechanical self-latching, three kinds of companies with steel aluminium laminated plate
The mode of connecing, which is combined, can greatly increase the reliability of technology and stability of joint.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (9)
1. a kind of rivet arrangement for spin friction punching press, it is characterised in that the rivet arrangement includes rotary punching and followed closely and institute
State the stirring-head that rotary punching nail is engaged and the mould being placed in below the rotary punching nail；
Rotary punching nail includes solid rivet body and is arranged on the rivet cap of the rivet body upper end, the riveting
The lower end of body is followed closely circumferentially arranged with screw thread, the upper end of the rivet cap is circumferentially uniformly provided with multiple wedge-shaped indentations, the wedge
Edge of the v notch v along rivet cap is inwardly opened up, and the center of the rivet cap is provided with the cylinder shape groove for positioning；
The bottom of the stirring-head be provided with multiple wedge-shaped boss of the multiple wedge-shaped indentation phase configuration and with the circle
The cylindrical boss of cylindrical groove phase configuration, the stirring-head realizes rotary punching under the cooperation of wedge-shaped boss and wedge-shaped indentation
The handling and rotation driving of nail；
The mould by the way of the matched moulds of left and right, it include offering on two half modules, the binding face of two half modules it is small under
Half big round platform connected in star, two half modules fit together the lower section that the complete round platform connected in star to be formed just is being followed closely rotary punching
Set, for coordinating the rotary punching nail control material flowing.
2. the rivet arrangement according to claim 1 for spin friction punching press, it is characterised in that the wedge-shaped indentation bag
The first plane for bearing circumferential moment of torsion and the second plane for withdrawing are included, first plane and the second plane are relative to be set
Put, the diameter parallel that first plane and the rotary punching are followed closely, second plane from the upper table of the rivet cap towards
Tilted close to the direction of the first plane.
3. the rivet arrangement according to claim 1 for spin friction punching press, it is characterised in that the wedge-shaped indentation
Quantity is 4.
4. the rivet arrangement according to claim 1 for spin friction punching press, it is characterised in that the rotary punching nail
Material be carbon steel, stainless steel or high-strength steel.
5. the rivet arrangement for spin friction punching press according to claim 1 or 4, it is characterised in that the rotation punching
The surface of nail pressing is provided with zinc or acieral coating.
6. the rivet arrangement according to claim 1 for spin friction punching press, it is characterised in that the material of the stirring-head
Matter is carbon steel, stainless steel or high-strength steel.
7. the rivet arrangement according to claim 1 for spin friction punching press, it is characterised in that the round platform connected in star
Side and bottom surface between angle be 45 °~89 °.
8. a kind of rivet arrangement riveting steel aluminium laminated plate according to any one of claim 1-7 for spin friction punching press
Method, it is characterised in that comprise the following steps：
Before S1, riveting, rotary punching is followed closely to the top for the round platform connected in star for being vertically placed to mould, and stirring-head is vertically placed to rotation
Turn the top of punching press nail, it is axially moved and is circumferentially rotated to the damping that it is appropriate that rotary punching follows closely application and limited；
S2, driving stirring-head it is fed at a slow speed downwards and while rotating at a slow speed, the cylindrical boss and rotation for making stirring-head are rushed
The cylinder shape groove of nail pressing is engaged automatically, with realize rotary punching nail from centering, while the wedge-shaped boss of stirring-head and rotation
Punching press nail wedge-shaped indentation is in contact, and then drives stirring-head to rotate at a high speed and be downwardly applied to pressure, when stirring-head is to rotary punching
Follow closely the axial compressive force applied and circumferential moment of torsion is more than when turning out-damping that punching press nail is subject to, rotary punching nail enters with stirring-head
Row is axially moved and circumferentially rotated；
S3, stirring-head drive rotary punching nail to continue to rotate and push at a high speed, make the lower surface that rotary punching is followed closely and steel aluminium lamination
The upper surface of plate is simultaneously rubbed, and local heating, steel aluminium laminated plate quilt are implemented to riveting position with the amount of heat of generation
Softening；
S4, in the presence of stirring-head is downwardly applied to pressure, rotary punching nail is by the circle of steel aluminium laminated plate high-speed punching press-in die
In platform connected in star, steel aluminium laminated plate forms mechanical self-latching in round platform connected in star, while the screw thread of rotary punching nail lower end is in height
Under the gentle cooperation of rotation at a high speed, the coat of metal between steel aluminium laminated plate is melted and uniformly mixed between steel aluminium laminated plate, it is complete
Into metallurgical binding；
S5, stirring-head continue to rotate and push at a high speed, drive rotary punching nail by the screw thread anchoring of its lower end in steel aluminium lamination
In plate, steel aluminium laminated plate is set to realize screw connected mechanical self-latching, while ensureing that rotary punching nails on end face and steel aluminium laminated plate
Upper surface overlap；
After S6, control stirring-head slow down until stopping the rotation, continue to keep applying 1~5s of pressure, then rotate backward stirring-head,
Complete withdrawing；
S7, mould separated, complete the demoulding at riveting position.
9. the method for riveting steel aluminium laminated plate according to claim 8, it is characterised in that in step S2, the stirring-head
The rotating speed of rotation is 100~2500r/min at a high speed, and the stirring-head downward pressure applied is 1000N-10000N.
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| CN201710485493.6A CN107186334A (en) | 2017-06-23 | 2017-06-23 | Method for the rivet arrangement and its riveting steel aluminium laminated plate of spin friction punching press |
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| CN201710485493.6A CN107186334A (en) | 2017-06-23 | 2017-06-23 | Method for the rivet arrangement and its riveting steel aluminium laminated plate of spin friction punching press |
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| CN109623133A (en) * | 2019-01-03 | 2019-04-16 | 南昌航空大学 | A kind of bolt enhancing friction stir spot welding method suitable for titanium aluminium dissimilar materials |
| CN111299807A (en) * | 2020-04-14 | 2020-06-19 | 江苏磐一智能装备有限公司 | Friction stir welding with function of removing aluminum layer |
| CN111660001A (en) * | 2020-06-12 | 2020-09-15 | 中南大学 | Ultrasonic vibration assisted friction stir compression ring lock rivet welding device and method |
| CN111889866A (en) * | 2020-06-19 | 2020-11-06 | 西安石油大学 | Friction hot riveting threaded nail and welding process |
| CN113302008A (en) * | 2018-11-15 | 2021-08-24 | 宾工程工厂公司 | Mechanical tool with rotary punch |
| CN113458585A (en) * | 2020-06-24 | 2021-10-01 | 西安交通大学 | Friction rivet welding connection method for friction heat generation of stirring sleeve rotation and rivet screwing-in type plate |
| WO2023240476A1 (en) * | 2022-06-15 | 2023-12-21 | 宁德时代新能源科技股份有限公司 | Riveting die and riveting apparatus |
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Application publication date: 20170922 |