CN109433996B - Double-sided rotating friction extrusion riveting device and riveting method thereof - Google Patents
Double-sided rotating friction extrusion riveting device and riveting method thereof Download PDFInfo
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- CN109433996B CN109433996B CN201811610308.2A CN201811610308A CN109433996B CN 109433996 B CN109433996 B CN 109433996B CN 201811610308 A CN201811610308 A CN 201811610308A CN 109433996 B CN109433996 B CN 109433996B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 24
- 241000587161 Gomphocarpus Species 0.000 claims description 12
- 238000005202 decontamination Methods 0.000 claims description 6
- 230000003588 decontaminative effect Effects 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005553 drilling Methods 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 description 18
- 229910001220 stainless steel Inorganic materials 0.000 description 18
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 12
- 229910000861 Mg alloy Inorganic materials 0.000 description 12
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000010963 304 stainless steel Substances 0.000 description 5
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 5
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 5
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 229910001250 2024 aluminium alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- B21J15/10—Riveting machines
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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
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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
-
- 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
- B21J15/10—Riveting machines
- B21J15/30—Particular elements, e.g. supports; Suspension equipment specially adapted for portable riveters
- B21J15/32—Devices for inserting or holding rivets in position with or without feeding arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention discloses a double-sided rotating friction extrusion riveting device and a riveting method thereof. The double-sided rotating friction extrusion riveting comprises the following steps: a. drilling a through hole in a connecting area of the overlapped workpieces; b. inserting the riveting column into the through hole, adjusting the connecting shafts at two sides to two ends of the through hole, wherein the bottom surface of the connecting shaft at one side is recessed to abut against the riveting column; c. rotating the connecting shaft and axially extruding the riveting column until the bottom surface of the connecting shaft is contacted with the surface of the workpiece, and filling the full spherical groove with the plasticized riveting column material; d. the connecting shaft is lifted axially, and riveting connection is completed after the workpiece is cooled. The device has simple structure and easy manufacture, and the riveting method has strong applicability and can obtain the connector with attractive appearance and excellent mechanical property at one time.
Description
Technical Field
The invention belongs to the technical field of metal connection, and particularly relates to a double-sided rotating friction extrusion riveting device and a riveting method thereof.
Background
The riveting technology is an indispensable connecting technology in the fields of automobile manufacturing, aerospace and the like, the traditional cold riveting technology is usually used on small-diameter rivets, and meanwhile, the requirement on the plasticity of rivet materials is high; the hot riveting is a riveting method which is carried out after the rivet is heated to a certain temperature, and is suitable for the rivet with larger diameter and poorer material plasticity, but because additional heating is needed, the energy consumption of the riveting process is larger, the rivet heated to a certain temperature needs to be inserted into a rivet hole in the traditional hot riveting process, the operation risk coefficient is higher, and a heating device is required to be close to an operation site.
Disclosure of Invention
The technical problem to be solved by the invention is as follows:
in order to overcome the defects in the prior hot riveting technology, the invention aims to provide a double-sided rotating friction extrusion riveting device with a simple structure, and the invention also aims to provide a riveting method using the device.
The invention adopts the following technical scheme for solving the technical problems:
a double-sided rotating friction extrusion riveting device comprises a clamp, a first working head, a second working head and an equipment body, wherein the clamp is used for enabling a first workpiece and a second workpiece to be lapped and fixed and enabling a circular through hole on the first workpiece and a circular through hole on the second workpiece to be coaxial, and the circular through holes on the first workpiece and the second workpiece have equal aperture and are used for a cylindrical riveting column to penetrate through;
the first working head and the second working head are respectively arranged on two sides of a first workpiece and a second workpiece which are fixed in an overlapping mode and respectively comprise a clamping rod and a connecting shaft, one end of the clamping rod is operably connected with the equipment body, the other end of the clamping rod is fixedly connected with one end of the connecting shaft, so that the connecting shafts of the first working head and the second working head are coaxially arranged in opposite directions, and grooves are formed in opposite end faces of free ends of the connecting shafts;
the equipment body is used for driving and controlling the clamping rod to perform rotary motion and displacement, so that the connecting shaft is coaxial with the axis of the workpiece through hole, the connecting shaft performs friction extrusion on the cylindrical riveting column from two sides, and finally a spherical nail head structure is formed on the outer sides of the first workpiece and the second workpiece, so that the first workpiece and the second workpiece are riveted and fixed.
Preferably, the groove is a spherical groove.
Preferably, the spherical grooves are the same size.
Preferably, the spherical radius of the spherical groove is 2.5 times of the radius of the through hole, and the diameter of the circle where the spherical groove and the connecting shaft are interacted is 2 times of the diameter of the through hole.
Preferably, the clamping rod and the connecting shaft are integrally machined.
Preferably, the device body drives the clamping rods of the first working head and the second working head, so that the corresponding connecting shafts perform reverse rotation motions and the rotating speeds are equal.
In another embodiment, the present invention provides a double-sided rotary friction squeeze riveting method using the double-sided rotary friction squeeze riveting apparatus, which includes the steps of:
(a) carrying out decontamination treatment on the inner surfaces of the circular through hole on the first workpiece and the circular through hole on the second workpiece and the surface of the cylindrical riveting column;
(b) clamping a first workpiece and a second workpiece to enable a first workpiece through hole and a second workpiece through hole to be coaxial, inserting a cylindrical riveting column into the first workpiece through hole and the second workpiece through hole, adjusting the relative positions of a connecting shaft of a first working head and a second working head and the first workpiece and the second workpiece to enable the connecting shaft to be coaxial with the axes of the first workpiece through hole and the second workpiece through hole, adjusting the connecting shaft of one of the first working head and the second working head to enable a groove of the connecting shaft to be abutted against one end of the cylindrical riveting column, and enabling the volume of a part of two ends of the cylindrical riveting column, which protrudes out of the surfaces of the first workpiece and the second workpiece, to be corresponding to the volume of the groove of the connecting shaft on the corresponding side;
(c) the connecting shafts on the two sides rotate in opposite directions at the same rotating speed, the axial position of the connecting shaft at one end of the cylindrical riveting column, which is propped by the groove, is kept unchanged, the connecting shaft on the other side axially moves to be in contact with the other end of the cylindrical riveting column, then the connecting shafts on the two sides move oppositely at the same axial speed, and the two ends of the cylindrical riveting column are squeezed in a friction mode, when the end surfaces of the connecting shafts on the two sides are respectively in contact with the surfaces of a first workpiece and a second workpiece, the connecting shafts on the two sides simultaneously axially move away from the workpieces, and at the moment, spherical nail head structures with the same shape as the groove are formed at the two ends of the cylindrical;
(d) and after the first workpiece and the second workpiece are cooled, the riveting connection is completed.
Preferably, the volume of the part of the cylindrical rivet column protruding from the surface of the first workpiece and the second workpiece at the two ends in the step (b) is 1.1 times of the volume of the groove of the corresponding side connecting shaft.
Preferably, the volume of the part of the cylindrical rivet column protruding from the surface of the first workpiece and the part protruding from the surface of the second workpiece at two ends of the cylindrical rivet column in the step (b) are equal.
Preferably, the rotation speed of the connecting shaft in the step (c) is 1000-.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
compared with the prior art, the invention has the following remarkable characteristics: the device has simple structure, and the cylindrical riveting column adopted by riveting is easy to process; the invention avoids the step-by-step riveting operation of the traditional hot riveting, namely the process of heating the rivet first and then inserting the rivet, simplifies the operation and improves the efficiency; according to the invention, the riveting columns are extruded by synchronously and reversely rotating the connecting shafts on the two sides, so that a perfect riveting joint can be obtained at one time; according to the invention, the riveting column is extruded by the double-side connecting shaft in a reverse constant-speed rotating manner, so that the riveting column does not rotate in the through hole, and on one hand, the plasticizing deformation rates of two ends of the riveting column under the action of friction extrusion are ensured to be the same, and two ends of the riveting column can form the pin head structures with the same size at the same time; on the other hand, the friction between the riveting column and the inner wall of the through hole is avoided, and the size precision of the through hole is ensured; the riveting column is heated by using friction heat, an external heating source is not needed, and the cost is saved; the connecting shaft groove design can obtain the nail head with regular shape at one time, the repeatability is good, the joint strength is high, and the nut structures at the two ends of the riveting column play a good role in axial fixing after the riveting is finished.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a cross-sectional view taken along plane C-C of the present invention.
Detailed Description
The double-sided rotating friction extrusion riveting technology is characterized in that a driving device is utilized to drive tools on two sides to rotate at a high speed, a riveting column is plasticized through friction heat between a spherical groove on the end surface of a working head and two ends of the riveting column, and meanwhile, the groove is filled with plasticized riveting column materials under the action of extrusion force of the working head, and finally, a spherical nail head structure is formed on two sides, so that riveting connection of workpieces is realized. The riveting method uses the cylindrical rivet, and is easy to manufacture; the friction heat and the extrusion force are simultaneously applied in the riveting process, so that the step-by-step operation of heating the rivet first and then inserting the rivet in the traditional hot riveting is avoided, the operation is simple, and the automation is easy to realize; the riveting method does not need an additional heating device, and saves cost and energy consumption.
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in figure 1, 150mm x 4mm metal workpieces 7 and 10 are fixed in an overlapping mode through a clamp 8, a clamping rod 2 and a connecting shaft 3 of a working head are integrally machined, the connecting shaft is connected with an equipment body 1 through the clamping rod, the length of the clamping rod 2 is 20mm, the diameter of the clamping rod 2 is 14mm, the length of the connecting shaft 3 is 20mm, the diameter of the connecting shaft is 18mm, and the metal workpieces 7 and 10 are made of the same or different metal materials.
As shown in fig. 2, the bottom surface of the connecting shaft 3 is provided with a spherical groove 4, the spherical radius of the spherical groove 4 is 7.5mm, the bottom circular radius of the groove 4 is 6mm, the length of the metal riveting column 5 is 22.8mm, the diameter of the metal riveting column is 5.9mm, the diameters of the through holes 6 and 9 are 6mm, the through holes 6 and 9 are coaxial, the metal riveting column 5 is inserted into the through holes 6 and 9 before riveting, the connecting shafts 3 at two sides are adjusted right above the riveting column 5, the connecting shafts at the lower sides are adjusted to enable the grooves 4 at the bottom surface of the connecting shafts to prop against the riveting column 5, and the lengths of parts of the two ends of the riveting column.
The connecting shafts 3 on the two sides rotate at a high speed, the directions are opposite, the axial positions of the connecting shafts on the lower side are fixed, the connecting shafts on the upper side quickly axially move to the upper end faces of the bottom groove contact riveting columns 5, then the connecting shafts on the two sides axially extrude the metal riveting columns 5 at the same speed, the grooves are gradually filled in the plasticized metal riveting columns 5, when the bottom surfaces of the connecting shafts 3 on the two sides are in surface contact with workpieces 7 and 10, the connecting shafts are axially moved away, and therefore spherical nail head structures are formed at the two ends of the metal riveting columns 5, and the workpieces 7 and 10 are riveted and fixed.
The axial extrusion motion is stopped after the end face of the connecting shaft is contacted with the surface of the workpiece, and the axial extrusion motion can be realized by setting coordinates through tool setting before riveting.
Example 1
The double-sided rotating friction extrusion riveting device shown in figure 1 is adopted for carrying out riveting connection on 2024 aluminum alloy workpieces, and the method specifically comprises the following steps:
(1) performing decontamination treatment on the inner surface of the through hole on the 2024 aluminum alloy workpiece and the surface of the 2024 aluminum alloy riveting column;
(2) clamping a 2024 aluminum alloy workpiece, enabling the through holes 6 and 9 to be coaxial, clamping the connecting shaft 3 on the equipment body 1 through the clamping rod 2, adjusting the connecting shafts 3 on two sides to be right above and right below the riveting area, inserting the aluminum alloy riveting columns into the through holes 6 and 9, enabling the grooves 4 in the bottom surfaces of the lower connecting shafts to abut against the riveting columns, and adjusting the positions of the lower connecting shafts to enable the lengths of two ends of the aluminum alloy riveting columns, which are higher than the surface of the workpiece, to be 7.4 mm;
(3) the connecting shafts 3 on the two sides reversely rotate at high speed at 1200rpm, the axial position of the connecting shaft on the lower side is fixed, the connecting shaft on the upper side quickly moves downwards to be in contact with the end face of the riveting column, then the connecting shafts on the two sides axially move towards the riveting area at the speed of 5mm/min, the two ends of the aluminum alloy riveting column rub with the upper and lower grooves 4, the plasticized riveting column material gradually fills the grooves 4 under the action of the extrusion force of the grooves, after the bottom end faces of the connecting shafts 3 on the two sides are in contact with the surface of the aluminum alloy workpiece, the connecting shafts 3 on the two sides simultaneously axially move away from the connecting area, and then spherical nail head structures with the same shape as the grooves 4 are formed at the two ends of;
(4) and after the aluminum alloy workpiece is cooled, taking down the aluminum alloy workpiece from the workbench to complete riveting connection.
Example 2
The double-sided rotary friction extrusion riveting device shown in figure 1 is adopted to rivet and connect the T2 industrial pure copper workpiece and the 6061 aluminum alloy workpiece, and the method specifically comprises the following steps:
(1) carrying out decontamination treatment on the inner surfaces of through holes 6 and 9 of a T2 industrial pure copper workpiece and a 6061 aluminum alloy workpiece and the surface of a T2 pure copper riveting column;
(2) clamping a T2 pure copper workpiece and a 6061 aluminum alloy workpiece to enable through holes 6 and 9 to be coaxial, clamping a connecting shaft 3 on an equipment body 1 through a clamping rod 2, adjusting the connecting shafts 3 on two sides to be right above and right below a riveting area, inserting a T2 pure copper riveting column into the through holes 6 and 9, enabling a groove 4 in the bottom surface of a lower connecting shaft to abut against the riveting column, and adjusting the position of a lower connecting shaft to enable the length of two ends of the pure copper riveting column, which is higher than the surface of the workpiece, to be 7.4 mm;
(3) the connecting shafts 3 on the two sides reversely rotate at high speed at 1300rpm, the axial position of the connecting shaft on the lower side is fixed, the connecting shaft on the upper side quickly moves downwards to be in contact with the end face of the pure copper rivet column, then the connecting shafts 3 on the two sides axially move towards the riveting area at the speed of 2mm/min, two ends of the pure copper rivet column rub with the upper and lower grooves 4, the plasticized rivet column material gradually fills the grooves 4 under the action of groove extrusion force, after the bottom end faces of the connecting shafts 3 on the two sides are in contact with the surfaces of the T2 pure copper workpiece and the 6061 aluminum alloy workpiece, the connecting shafts 3 on the two sides simultaneously axially move away from the connecting area, a spherical nail head structure with the same shape as the grooves 4 is formed at two ends of the pure copper rivet column, and the T2 pure copper workpiece and the;
(4) and after the T2 pure copper workpiece and the 6061 aluminum alloy workpiece are cooled, taking down the workpieces from the workbench to finish riveting connection.
Example 3
The double-sided rotating friction extrusion riveting device shown in figure 1 is adopted for riveting and connecting 304 stainless steel workpieces, and the method specifically comprises the following steps:
(1) the inner surfaces of the through holes 6 and 9 on the 304 stainless steel workpiece and the surface of the 304 stainless steel riveting column are subjected to decontamination treatment;
(2) clamping a 304 stainless steel workpiece to enable the through holes 6 and 9 to be coaxial, clamping a connecting shaft 3 on an equipment body 1 through a clamping rod 2, adjusting the connecting shafts 3 on two sides to be right above and right below a riveting area, inserting 304 stainless steel riveting columns into the through holes 6 and 9, enabling grooves 4 in the bottom surfaces of lower connecting shafts to abut against the riveting columns 5, and adjusting the positions of lower connecting shafts to enable the lengths of two ends of the stainless steel riveting columns 5 higher than the surface of the workpiece to be 7.4 mm;
(3) the connecting shafts 3 on the two sides reversely rotate at high speed at 1800rpm, the axial position of the connecting shaft on the lower side is fixed, the connecting shaft on the upper side quickly moves downwards to be in contact with the end face of the stainless steel rivet column, then the connecting shafts 3 on the two sides axially move towards the riveting area at the speed of 2.5mm/min, the two ends of the stainless steel rivet column rub against the upper and lower grooves 4, the plasticized rivet column material gradually fills the grooves 4 under the action of the extrusion force of the grooves, after the bottom end faces of the connecting shafts 3 on the two sides are in contact with the surface of the stainless steel workpiece, the connecting shafts 3 on the two sides simultaneously axially move away from the connecting area, and then spherical nail head structures with the same shape as the grooves 4 are formed at the two ends of the stainless steel rivet column;
(4) and after the stainless steel workpiece is cooled, taking down the stainless steel workpiece from the workbench to finish riveting connection.
Example 4
The double-sided rotating friction extrusion riveting device shown in figure 1 is adopted for riveting and connecting a 316L stainless steel workpiece and a TC4 titanium alloy workpiece, and the method specifically comprises the following steps:
(1) the inner surfaces of the through holes 6 and 9 of the 316L stainless steel workpiece and the TC4 titanium alloy workpiece and the surface of the 316L stainless steel riveting column are decontaminated;
(2) clamping a 316L stainless steel workpiece and a TC4 titanium alloy workpiece to enable through holes 6 and 9 to be coaxial, clamping a connecting shaft 3 on an equipment body 1 through a clamping rod 2, adjusting the connecting shafts 3 on two sides to be right above and right below a riveting area, inserting 316L stainless steel riveting columns into the through holes 6 and 9, enabling a groove 4 in the bottom surface of a lower connecting shaft to abut against a riveting column 5, and adjusting the position of a lower connecting shaft to enable the length of two ends of the stainless steel riveting column 5 to be 7.4mm higher than the surface of the workpiece;
(3) the connecting shafts 3 on the two sides reversely rotate at high speed at 2000rpm, the axial position of the connecting shaft on the lower side is fixed, the connecting shaft on the upper side quickly moves downwards to be in contact with the end face of a 316L stainless steel rivet column, then the connecting shafts 3 on the two sides axially move towards a riveting area at 3mm/min, two ends of the stainless steel rivet column rub with an upper groove 4 and a lower groove 4, plasticized rivet column materials gradually fill the grooves 4 under the action of groove extrusion force, after the bottom end faces of the connecting shafts 3 on the two sides are in contact with the surfaces of the 316L stainless steel workpiece and a TC4 titanium alloy workpiece, the connecting shafts 3 on the two sides simultaneously axially move away from a connecting area, a spherical nail head structure with the same shape as the grooves 4 is formed at two ends of the stainless steel rivet column 5, and the riveting fixing effect is achieved on the overlapped 316L stainless;
(4) and after the 316L stainless steel workpiece and the TC4 titanium alloy workpiece are cooled, taking down the workpieces from the workbench to finish riveting connection.
Example 5
The method adopts a double-sided rotating friction extrusion riveting device shown in figure 1 to rivet and connect AZ91D magnesium alloy workpieces, and specifically comprises the following steps:
(1) performing decontamination treatment on the inner surfaces of the through holes 6 and 9 on the AZ91D magnesium alloy workpiece and the surface of the AZ91D magnesium alloy rivet column;
(2) clamping an AZ91D magnesium alloy workpiece to enable through holes 6 and 9 to be coaxial, clamping a connecting shaft 3 on an equipment body 1 through a clamping rod 2, adjusting the connecting shafts 3 on two sides to be right above and right below a riveting area, inserting AZ91D magnesium alloy riveting columns into the through holes 6 and 9, enabling grooves 4 in the bottom surface of a lower connecting shaft to abut against the riveting columns, and adjusting the position of the lower connecting shaft to enable the lengths of two ends of the magnesium alloy riveting columns, which are higher than the surface of the workpiece, to be 7.4 mm;
(3) the connecting shafts 3 on the two sides reversely rotate at high speed at 1500rpm, the axial position of the connecting shaft on the lower side is fixed, the connecting shaft on the upper side quickly moves downwards to be in contact with the end face of the AZ91D magnesium alloy rivet column, then the connecting shafts 3 on the two sides axially move towards the riveting area at 4mm/min, the two ends of the magnesium alloy rivet column rub with the upper and lower grooves 4, the plasticized rivet column material gradually fills the grooves 4 under the action of groove extrusion force, after the bottom end faces of the connecting shafts 3 on the two sides are in contact with the surface of the AZ91D magnesium alloy workpiece, the connecting shafts 3 on the two sides simultaneously axially move away from the connecting area, at the moment, spherical nail head structures with the same shape as the grooves 4 are formed at the two ends of the magnesium alloy rivet column, and the riveting and fixing effects;
(4) and after the AZ91D magnesium alloy workpiece is cooled, taking down the magnesium alloy workpiece from the workbench to finish riveting connection.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the details of the embodiments, and various equivalent modifications can be made within the technical spirit of the present invention, and the scope of the present invention is also within the scope of the present invention.
Claims (8)
1. The utility model provides a two-sided rotatory friction extrusion riveting set which characterized in that: comprises a clamp, a first working head, a second working head and an equipment body,
the clamp is used for enabling the first workpiece and the second workpiece to be fixed in an overlapping mode, and enabling the circular through hole in the first workpiece and the circular through hole in the second workpiece to be coaxial, wherein the circular through holes in the first workpiece and the second workpiece have equal aperture and are used for the cylindrical riveting column to penetrate through;
the first working head and the second working head are respectively arranged on two sides of the first workpiece and the second workpiece which are fixed in an overlapping mode and respectively comprise a clamping rod and a connecting shaft, one end of the clamping rod is operably connected with the equipment body, the other end of the clamping rod is fixedly connected with one end of the connecting shaft, so that the connecting shafts of the first working head and the second working head are coaxially arranged in opposite directions, grooves are formed in opposite end faces of free ends of the connecting shafts, and the grooves are spherical grooves;
the equipment body is used for driving and controlling the clamping rod to perform rotary motion and displacement, so that the connecting shaft is coaxial with the axis of the through hole of the workpiece, the connecting shaft performs friction extrusion on the cylindrical riveting column from two sides, and finally, a spherical nail head structure is formed on the outer sides of the first workpiece and the second workpiece, so that the first workpiece and the second workpiece are riveted and fixed; the equipment body drives the clamping rods of the first working head and the second working head, so that the connecting shafts on the two sides rotate in opposite directions at the same rotating speed.
2. The double-sided rotary friction squeeze riveting apparatus according to claim 1, characterized in that: the spherical grooves are the same in size.
3. The double-sided rotary friction squeeze riveting apparatus according to claim 2, characterized in that: the spherical radius of the spherical groove is 2.5 times of the radius of the through hole, and the diameter of a circle formed by the spherical groove on the bottom surface of the connecting shaft is 2 times of the diameter of the through hole.
4. The double-sided rotary friction squeeze riveting apparatus according to claim 1, characterized in that: the clamping rod and the connecting shaft are integrally processed.
5. A double-sided rotary friction squeeze riveting method using the double-sided rotary friction squeeze riveting apparatus according to claim 1, characterized by comprising the steps of:
(a) carrying out decontamination treatment on the inner surfaces of the circular through hole on the first workpiece and the circular through hole on the second workpiece and the surface of the cylindrical riveting column;
(b) clamping a first workpiece and a second workpiece to enable a first workpiece through hole and a second workpiece through hole to be coaxial, inserting a cylindrical riveting column into the first workpiece through hole and the second workpiece through hole, adjusting the relative positions of a connecting shaft of a first working head and a second working head and the first workpiece and the second workpiece to enable the connecting shaft to be coaxial with the axes of the first workpiece through hole and the second workpiece through hole, adjusting the connecting shaft of one of the first working head and the second working head to enable a groove of the connecting shaft to be abutted against one end of the cylindrical riveting column, and enabling the volumes of parts, protruding out of the surfaces of the first workpiece and the second workpiece, of two ends of the cylindrical riveting column to be respectively corresponding to the volumes of the grooves of the connecting shafts on the corresponding sides;
(c) the connecting shafts on the two sides rotate in opposite directions at the same rotating speed, the axial position of the connecting shaft at one end of the cylindrical riveting column, which is propped by the groove, is kept unchanged, the connecting shaft on the other side axially moves to be in contact with the other end of the cylindrical riveting column, then the connecting shafts on the two sides move oppositely at the same axial speed, and the two ends of the cylindrical riveting column are squeezed in a friction mode, when the end surfaces of the connecting shafts on the two sides are respectively in contact with the surfaces of a first workpiece and a second workpiece, the connecting shafts on the two sides simultaneously axially move away from the workpieces, and at the moment, spherical nail head structures with the same shape as the groove are formed at the two ends of the cylindrical;
(d) and after the first workpiece and the second workpiece are cooled, the riveting connection is completed.
6. The double-sided rotary friction squeeze riveting method according to claim 5, characterized in that: and (c) in the step (b), the volumes of the parts of the two ends of the cylindrical riveting column protruding out of the surfaces of the first workpiece and the second workpiece are respectively 1.1 times of the volume of the groove of the corresponding side connecting shaft.
7. The double-sided rotary friction squeeze riveting method according to claim 5, characterized in that: the volumes of the parts of the two ends of the cylindrical rivet column protruding out of the surfaces of the first workpiece and the second workpiece in the step (b) are equal.
8. The double-sided rotary friction squeeze riveting method according to claim 5, characterized in that: the rotation speed of the connecting shaft in the step (c) is 1000-2000rpm, and the pressing speed is 1-5 mm/min.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610308.2A CN109433996B (en) | 2018-12-27 | 2018-12-27 | Double-sided rotating friction extrusion riveting device and riveting method thereof |
| PCT/CN2019/092649 WO2020133974A1 (en) | 2018-12-27 | 2019-06-25 | Double-faced rotational friction extrusion riveting device and riveting method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610308.2A CN109433996B (en) | 2018-12-27 | 2018-12-27 | Double-sided rotating friction extrusion riveting device and riveting method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109433996A CN109433996A (en) | 2019-03-08 |
| CN109433996B true CN109433996B (en) | 2021-02-02 |
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| CN201811610308.2A Active CN109433996B (en) | 2018-12-27 | 2018-12-27 | Double-sided rotating friction extrusion riveting device and riveting method thereof |
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| CN (1) | CN109433996B (en) |
| WO (1) | WO2020133974A1 (en) |
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| CN109433996B (en) * | 2018-12-27 | 2021-02-02 | 南京航空航天大学 | Double-sided rotating friction extrusion riveting device and riveting method thereof |
| CN109967683B (en) * | 2019-03-28 | 2023-10-27 | 南京航空航天大学 | Titanium nail riveting forming method and device based on pulse current pretreatment |
| CN110640071B (en) * | 2019-09-27 | 2021-02-19 | 陕西科技大学 | Method for riveting medium-thickness metal plate without protrusions on two sides |
| CN112855816B (en) * | 2021-01-07 | 2022-10-11 | 浙江奇碟汽车零部件有限公司 | Detect frock of friction riveting intensity |
| CN113732230B (en) * | 2021-08-06 | 2022-07-05 | 哈尔滨工业大学 | Friction rivet welding device and method in dual connection mode |
| CN114043248B (en) * | 2021-12-24 | 2022-10-18 | 中国民用航空飞行学院 | Plate composite forming and processing equipment based on electromagnetic riveting and friction stir welding |
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| GB575556A (en) * | 1944-03-23 | 1946-02-22 | Hans Klopstock | Improvements in and relating to riveting |
| JPH01189995A (en) * | 1988-01-26 | 1989-07-31 | Matsushita Electric Works Ltd | Technique of caulking eyelet pin |
| DE102004003909B4 (en) * | 2004-01-27 | 2010-09-09 | GM Global Technology Operations, Inc., Detroit | Press welding process for joining two or more sheets or profile parts, in particular a body segment, its use and body segment |
| JP2007301578A (en) * | 2006-05-09 | 2007-11-22 | Hino Motors Ltd | Method for joining materials |
| CN202151675U (en) * | 2011-07-18 | 2012-02-29 | 永济新时速电机电器有限责任公司 | High-speed rotary riveting device for iron core manufacturing |
| CN102430687B (en) * | 2011-11-03 | 2014-11-05 | 苏州东风精冲工程有限公司 | Double-end pressure riveting method, riveting pin and pressure riveting device |
| CN102518630A (en) * | 2011-12-16 | 2012-06-27 | 南京航空航天大学 | Engineering ceramic structure connection method on basis of titanium alloy rivets |
| CN102615508A (en) * | 2012-03-26 | 2012-08-01 | 郑州大学 | Metal plate rotating friction riveting method |
| CN203253869U (en) * | 2013-04-28 | 2013-10-30 | 北京汽车股份有限公司 | Rotary friction self-piercing riveting device |
| CN205020726U (en) * | 2015-09-14 | 2016-02-10 | 珠海华粤离合器有限公司 | Automatic riveting set of clutch driven plate friction disc |
| CN105598339B (en) * | 2015-12-29 | 2018-07-24 | 长春一东离合器股份有限公司 | Whole riveting friction disc device |
| CN109433996B (en) * | 2018-12-27 | 2021-02-02 | 南京航空航天大学 | Double-sided rotating friction extrusion riveting device and riveting method thereof |
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| WO2020133974A1 (en) | 2020-07-02 |
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