CN117922036A - Annular laser-assisted rivetless riveting method for composite material and metal material - Google Patents
Annular laser-assisted rivetless riveting method for composite material and metal material Download PDFInfo
- Publication number
- CN117922036A CN117922036A CN202410183873.4A CN202410183873A CN117922036A CN 117922036 A CN117922036 A CN 117922036A CN 202410183873 A CN202410183873 A CN 202410183873A CN 117922036 A CN117922036 A CN 117922036A
- Authority
- CN
- China
- Prior art keywords
- composite material
- metal material
- laser
- female die
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 109
- 239000007769 metal material Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000005520 cutting process Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims description 21
- 230000008093 supporting effect Effects 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 14
- 229920001169 thermoplastic Polymers 0.000 claims description 9
- 239000004416 thermosoftening plastic Substances 0.000 claims description 9
- 229920001187 thermosetting polymer Polymers 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000003698 laser cutting Methods 0.000 abstract description 11
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000000805 composite resin Substances 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910001234 light alloy Inorganic materials 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 239000010786 composite waste Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 210000003739 neck Anatomy 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Insertion Pins And Rivets (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
A laser-assisted rivetless riveting method for a composite material and a metal material includes the steps that firstly, the composite material is stacked on the metal material, and laser circular cutting of the composite material is completed through annular laser, so that a regular through hole is formed; then compacting the connecting plate through the lower part of the female die to realize the pretension of the connecting plate; under the action of forming force of upward movement of the male die, the metal material is caused to generate plastic deformation and form rivetless riveting with a composite material cutting hole, and the collection of cutting scraps is completed under the condition that a riveting die is not completely opened by opening the female die outer cylinder in a sectional manner. The invention realizes the continuous process of plastic deformation of the laser cutting composite material and the metal material by utilizing the characteristic that the resin-based composite material and the metal material have difference in the absorption capacity of laser energy of a specific laser wave band, thereby realizing rivetless riveting of the composite material and the metal material in a prefabricated hole-free state, being applicable to connection of the composite material with different resin materials as matrixes and the metal material, and the connector can have a certain tensile strength.
Description
Technical Field
The invention relates to a technology in the field of heterogeneous plate connection, in particular to a ring laser auxiliary rivetless riveting method for thermoplastic or thermosetting resin matrix composite materials and metal materials.
Background
The sheet connection of composite materials and metallic materials has wide application in the automotive, rail transit and aerospace fields. Because of the differences in resistance, melting point and thermal conductivity between heterogeneous materials, a homogeneous nugget cannot be formed during welding, and thus effective and safe connection cannot be achieved. At present, a mechanical connection mode is adopted for connecting heterogeneous materials, wherein: the rivetless riveting is the most economical mechanical connection process because of no fastener, no surface damage of a workpiece, good fatigue resistance, good sealing performance and other good characteristics of the connector. However, the application of the conventional rivetless riveting is limited by the insufficient plastic deformation capability of the carbon fiber composite material.
The existing technology of laser auxiliary engagement connection of thermoplastic composite material and light alloy is characterized in that the corresponding characteristic patterns are processed on the single side surface of a connecting plate, the two are assembled and then the swing laser is used for scanning the surface of the light alloy plate, and a riveting structure of the thermoplastic composite material and the light alloy with extremely high strength is formed under the condition of pressurization, but the preparation cost of the characteristic patterns on the surface of the plate is relatively high, and the technology is not suitable for mass market production.
The existing laser heating rivet-free riveting technology is characterized in that the optical fiber tube is embedded in the riveting male die and the female die, the forming area of the riveting material is heated by laser before riveting forming, the material performance is improved, the brittle material is prevented from being easily cracked and broken in the riveting process, meanwhile, the plastic deformation resistance of the material can be reduced, the plate is fully deformed in the forming process, and the connection quality is improved. However, this method of heat softening assisted rivetless riveting is only suitable for thermoplastic composites. In joining thermoset composites, the plastic deformability of the composite cannot be increased by means of heat softening.
Disclosure of Invention
Aiming at the problems that the existing rivetless riveting process with a prefabricated hole is complex, the positioning is difficult, and the thermosetting composite material cannot be connected by heat-assisted rivetless riveting, the invention provides a ring laser assisted rivetless riveting method for a composite material and a metal material, and the invention is suitable for connecting the composite materials with different resin materials as matrixes and the metal material by utilizing the characteristic that the resin-based composite material and the metal material have different absorption capacities of laser energy of a specific laser band, and realizes independent laser cutting of the composite material and the metal material in a stacking state, thereby realizing rivetless riveting of the metal material and the composite material with a cutting hole in a continuous process.
The invention is realized by the following technical scheme:
The invention relates to a ring laser auxiliary rivetless riveting method for a composite material and a metal material, which comprises the steps of firstly stacking the composite material on the metal material, and completing laser circular cutting of the composite material through ring laser to form a regular through hole; then compacting the connecting plate through the lower part of the female die to realize the pretension of the connecting plate; under the action of forming force of upward movement of the male die, the metal material is caused to generate plastic deformation and form rivetless riveting with a cutting hole of the composite material, after connection is finished, the outer cylinder is moved by opening the female die to form a side opening, so that cutting waste collection is completed, and finally, the female die is completely opened to take out the connecting plate.
The metal material is metal easy to plastically deform, and the thickness t 13 = 0.5-5.0mm; the composite material is carbon fiber or glass fiber with thermoplastic or thermosetting resin material as matrix, and the thickness t 12 = 0.5-5.0mm. The sheet material does not require any surface pretreatment prior to joining.
The laser circular cutting is characterized in that point-shaped laser is dispersed into annular laser by using a biconic lens, wherein the width of an annular light spot is smaller than or equal to 0.3mm, the diameter of the annular light spot is smaller than or equal to 10mm, and the power P=at 12 -b of a laser source is a=120W/mm; b=40w.
The highest temperature T of the composite material of the laser circular cutting meets the following conditions: and (3) at 12+140℃<T<et12 +190 ℃, e=30 ℃/mm, riveting can be carried out when the ring cutting is qualified, and when the highest temperature exceeds the range, the process is finished when the ring cutting is unqualified.
According to the rivetless riveting method, cutting and riveting station switching is realized through the sliding rail at the female die end.
The plate pre-tightening is realized by the lower pressure of the female die outer cylinder, and the connecting plate pre-tightening is arranged between the female die outer cylinder and the blank holder. The pre-tightening pressure is q (t 12+t13), and q=.0.125 mm/MPa.
The diameter of the male die is equal to that of the rivetless riveting For the cut hole diameter, the bevel angle β=2° -10 °.
When the male die moves towards the metal material and applies upward forming force, the metal material is plastically deformed towards the female die under the pressure of the male die, and the generated composite scrap is ejected out by the deformed metal material and the height of the composite scrap is limited by the anti-ejection position of the female die: the counter-top distance d=t 12 ±0.4mm of the female die. When the composite scrap material and the female die are in counter-top contact, supporting force is provided for the metal material together, and under the combined action of forming force and supporting force, the metal material is thinned to 20% t 13-50％t13 at the bottom and the radial flow of the material is caused.
The cutting waste collection means: after riveting is completed, the spring cylinder in the female die is decompressed, the female die moves the outer cylinder to slide upwards to form an opening through the tensile force of the spring, and recovery of cutting scraps is completed through the opening.
Technical effects
The laser-assisted rivetless riveting technology provided by the invention is suitable for connecting a metal material and a thermoplastic or thermosetting matrix composite material, and particularly solves the problem that a thermosetting resin matrix composite material cannot be softened by heat to improve the riveting performance. Compared with heat softening auxiliary riveting, the process time is reduced by 70-85%. The cutting of the composite material can be completed without damaging the surface of the metal material by the annular laser beam. The waste heat generated by the laser circular cutting composite material can improve the plastic deformation capability of the metal material to a certain extent and improve the connection quality. Compared with the existing rivetless riveting technology based on heat softening, the method for directly cutting the composite material stacked with the metal material by using the annular laser beam can break through the limit of the matrix material of the composite material on rivetless riveting, and is simultaneously suitable for thermoplastic and thermosetting composite materials. After connection, the female die outer cylinder is opened in a sectional mode, and cutting waste collection is completed.
Drawings
FIG. 1 is a schematic cross-sectional view of a laser-assisted rivetless riveting die (laser cutting station) that is location-free and facilitates collection of cutting scrap;
FIG. 2 is a schematic cross-sectional view of a laser assisted rivetless riveting die (rivetless riveting station) that is location-free and facilitates the collection of cutting scrap;
FIG. 3 is a schematic diagram of a riveting state of the female die outer cylinder;
fig. 4 is a schematic diagram of a discharging state of the female die outer cylinder;
FIG. 5 is a schematic illustration of a laser assisted rivetless riveting process flow;
FIG. 6 is a schematic illustration of rivetless riveting die dimensions and laser chamfer;
FIG. 7 is a schematic view of a joint of laser-assisted rivetless riveting (the bottom of the metal material is higher than the bottom of the composite material);
FIG. 8 is a schematic view of a laser assisted rivetless rivet joint (with the bottom of the metal material aligned with the bottom of the composite material);
FIG. 9 is a schematic view of a joint of laser assisted rivetless riveting (the bottom of the metal material is lower than the bottom of the composite material);
In the figure: the die comprises a die outer cylinder, a fixed outer cylinder, a 102 moving outer cylinder, a2 die counter top, a 3 first supporting block, a4 spring cylinder, a 5 second supporting block, a 6 box cover plate, a 7 second sliding block, an 8 die box, a 9 laser, a 10 first sliding block, 11 sliding rails, 12 composite materials, 121 composite material waste materials, 122 composite material bottom ends, 123 composite material through holes, 13 metal materials, 131 connector necks, 132 connector bottoms, 14 male dies, 15 blank holders and 16 thermistors;
FIG. 10 is a sample view of laser cut holes and composite waste produced by laser cutting a composite material;
FIG. 11 is a cut-away cross-sectional view of a composite through-hole;
Fig. 12 is a graph showing the surface temperature acquisition result of the metal material during the laser cutting process. a) A temperature change schematic diagram of a corresponding overlap region of the metal material, b) a thermal imager acquires a temperature cloud image when t=2 s;
FIG. 13 is a cut-away view of a joint of rivetless riveted metal material and composite material.
Detailed Description
As shown in fig. 1 and 2, this embodiment relates to an integrated laser-assisted rivetless riveting apparatus, which includes: cutting mechanism and die mould and the terrace die mechanism of relative setting that hang in proper order, wherein: the female die comprises: the female die outer cylinder 1, the anti-jacking mechanism and the second supporting block 5 are sequentially arranged from bottom to top; the male die mechanism comprises: the blank holder 15 and the punch 14 that sets up in its inside center, this punch 14 just faces the anti-top mechanism.
The hanging is realized by a guide rail and two sliding blocks 7 and 10 movably arranged on the guide rail, wherein: the cutting mechanism and the female die are respectively connected with the sliding block, and station conversion is realized through an external driving device.
The anti-top mechanism comprises: die anti-top 2 and set up in its outside spring cylinder 4 and first supporting shoe 3, wherein: the female die anti-top 2 is arranged in the inner hole of the first supporting block 3 and extends into the female die outer cylinder 1 and does not protrude out of the female die outer cylinder 1.
The female die outer cylinder 1 is of a two-section structure and comprises a fixed outer cylinder 101 and a movable outer cylinder 102, wherein: the fixed outer cylinder 101 is connected with the first supporting block 3 of the anti-jacking mechanism, and the movable outer cylinder 102 is connected with the spring cylinder 4.
The female die outer cylinder 1 and the first supporting block 3 are provided with concentric through holes with the same size.
The outside of die mould be equipped with die box 8 and box apron 6, wherein: the female die outer cylinder 1 is placed on the inner side of the bottom of the female die box body 8, and the bottom of the female die outer cylinder 1 protrudes out of the bottom of the female die box body 8 through a through hole at the bottom of the female die box body 8; the die anti-top 2, the first supporting block 3 and the upper end face of the spring cylinder 4 are flush and are connected with the second supporting block 5 together.
In order to ensure riveting quality, the positions d of the lower surfaces of the die counter-tops 2 from the composite material 12 are adjusted in a targeted manner by using the die counter-tops 2 with different lengths, specifically: d=t 12 ±k, wherein: t 12 is the interlocking value, k is 0.4mm in this example, depending on the thickness of the composite material 12.
As shown in fig. 5, the cutting mechanism is realized by a laser 9, and the laser 9 disperses the spot laser light into an annular laser beam 91 by optical refraction.
The laser preferably adopts a CO 2 laser, the output power of which is P=P=120W/mm.t 12 -40W, and the recommended power of a composite material with the thickness of t 12 =2 mm is 200W.
The diameter d=3 mm of the punch 14, the bevel angle β=2°.
The integrated thermistor 16 in the bead ring 15 is used for detecting the surface temperature T of the metal material 13 and defining a process window for laser cutting the composite material.
The embodiment relates to an integrated laser-assisted rivetless riveting method based on the device, which comprises the following steps of:
1) Placing the composite material 12 and the metal material 13 in a riveting station in a reasonable order;
2) The laser 9 is translated to a position coaxial with the punch 14, emitting an annular laser beam 91 to complete the cutting of the composite material 12, wherein: in the laser cutting process, the laser beam 9 is always perpendicular to the surface of the composite material 12, the width of the annular light spot is smaller than or equal to 0.3mm, the diameter of the annular light spot is smaller than or equal to 10mm, and the laser beam can locally vaporize the composite material to realize the cutting process. As shown in fig. 6, the angle α between the cut section and the composite panel surface satisfies the following conditions: 120 ° > α >60 ° and ensures that: if T is more than 300 ℃ at 30 ℃/mm.t 12+140℃<T<30℃/mm·t12 +190 ℃, the riveting process is carried out after the specific condition is detected.
3) The laser 9 and the riveting female die exchange station, the female die is synchronously pressed down, the female die outer cylinder 1 applies a pretightening force, pretightening of a connecting plate is realized between the blank holder 15 and the female die outer cylinder 1, and the method specifically comprises the following steps: in the riveting process, the composite material 12 is placed at the female die end, and the metal material 13 is placed at the male die end; after the connection process is started, the female die outer cylinder 1 applies a pressing force to the connection plate material, and the blank holder 15 provides a supporting force to pre-tighten the connection plate material, and the pre-tightening force is set to be 0.5MPa.
4) The punch 14 applies a forming force upward, and the metal material 13 is drawn into the composite through-hole 123 by the forming force. While the composite scrap 121 is ejected upward. After the composite scrap 121 contacts the female die counter 2, the composite scrap 121 stops moving upward.
As shown in fig. 3, in order to secure the pretensioning effect, the cylinder spring 4 is in a pressurized state during the caulking process, and the movable outer cylinder 102 is positioned at the same height as the fixed outer cylinder 101.
5) The stretched metal material is pressed at the bottom in opposite directions from the composite scrap 10 and the punch 6 due to the supporting action of the counter top of the die. The metal material bottom 13 is extruded to be upset, and the metal material neck 11 is tightly matched with the composite material through hole 15.
6) And the connection is finished, and the connection is reliable.
7) As shown in fig. 4, the movable outer cylinder 102 is opened, and the composite waste 121 is discharged: the cylinder spring 4 is in a pressure release state, and the movable outer cylinder 102 is vertically upwards moved to form a side opening of the female die by means of spring tension, so that the collection of cutting scraps can be realized under the condition that the female die is not integrally opened through the opening of the movable outer cylinder. After the discharging process is finished, the cylinder spring 4 enters the pressurizing state again.
8) The movable outer cylinder 102 is closed, the upper mold is opened, and the connection material is taken out.
Through specific practical experiments, the experiments are carried out by adopting a thermoplastic carbon fiber composite plate CF-PA66 with the plate thickness of t 12 =2 mm and a five-system aluminum alloy rolling plate AA5182 with the plate thickness of t 13 =2 mm, at a riveting station, a female die outer cylinder 1 and a female die counter top 2 are arranged on top, a male die 6 and a blank holder 7 are arranged on bottom, a composite material 12 is placed at the female die end, a metal material 13 is placed at the male die end, and no surface pretreatment is needed for the two materials.
The die reverse ejection depth d is set to 2.1mm, the laser 9 is 5mm away from the upper surface of the composite material 12, the power of the laser 9 is set to 350W (60%), the frequency is 9 kHz, the annular laser beam 91 with the diameter of 5mm is always vertical to the surface of the composite material 12 and vaporizes the composite material 12, a composite material through hole 123 is formed in the composite material 12, and a complete sheet-shaped composite material waste 121 is generated. As a result, as shown in FIG. 10, the notched section was regular and free of exposed fibers, and the heat affected zone was small. The results are shown in FIG. 11.
In the process of cutting the composite material by laser, the temperature of the metal material corresponding to the lap joint area is rapidly increased, and the maximum temperature is 264 ℃ within 0.4 s. The laser cutting was continued for 2.0 s a, during which the temperature of the corresponding lap zone of the metallic material was above 200 c. The results are shown in FIG. 12.
Further arranging the female die outer cylinder 1 and the female die counter top 2 to rapidly and synchronously press down at 50mm/s, decelerating to 20mm/s when approaching to the connecting material, slowly and synchronously pressing down until the surface of the composite material 12 is completely attached, and applying a pre-tightening pressure with the size of 2MPa to the female die outer cylinder. The timing of the activation of the male die 14 is determined by the temperature measured by the thermistor 16 inside the bead 15: at a measured temperature drop of 5%, the punch 14 speed of 30mm/s was started to feed upward to apply forming force, and the metal material bottom 132 was thinned to 20% of the original plate thickness under co-extrusion of the punch 14 and the composite scrap 121. The thinning of the metal material results in a certain amount of radial material flow to form a tight fit at the rivet joint, as shown in fig. 13.
When the thickness of the composite material is close to that of the metal material, the bottom of the metal material after plastic deformation may be lower than the bottom surface of the composite material, as shown in fig. 9 or aligned with the bottom surface of the composite material, as shown in fig. 8, and the metal material after plastic deformation forms a tight fit with the composite material; when the thickness of the metal material is much greater than that of the composite material, the metal material after plastic deformation may be higher than the bottom surface of the composite material, as shown in fig. 7, and the metal material higher than the bottom surface of the composite material may be deformed radially more due to the forming force, thereby forming a larger mechanical engagement.
The cylinder spring is in a pressure release state, the movable outer cylinder is vertically upwards moved by means of the tension of the spring to form a side opening of the female die, as shown in fig. 4, the movable outer cylinder 102 is opened, and the composite material waste 121 is discharged. The movable outer cylinder 102 is closed, the upper die is opened, and then the collection of cutting wastes without integrally opening the female die can be realized through the opening of the upper die. After the discharging process is finished, the cylinder spring enters the pressurizing state again.
When the same metal material is combined with the composite material in rivetless riveting, compared with the existing rivetless riveting process, the laser-assisted rivetless riveting process provided by the invention has the advantages of short connection process time, no material pretreatment and suitability for different composite material types. The thermal effect of the laser cutting can effectively heat the metal material overlapped with the laser cutting. Particularly, when the aluminum alloy material is connected, the temperature generated by heating can soften the aluminum alloy after time-efficient treatment and the high-strength aluminum alloy, and the plastic deformation capacity of the material is improved. The specific data are shown in the following table:
Compared with the prior art, the invention realizes the continuous process of plastic deformation of the laser cutting composite material and the metal material by utilizing the characteristic that the resin-based composite material and the metal material have difference in the absorption capacity of laser energy of a specific laser wave band, thereby realizing rivetless riveting of the composite material and the metal material in a prefabricated hole-free state. The laser 9 can emit annular light beams to realize annular cutting of the composite material, and the riveting die can be accurately positioned through the slide rail 11 so as to ensure the connection quality. After riveting, the female die outer cylinder 1 can be opened in a segmented mode, so that the collection of the cutting waste of the composite material is completed under the condition that a riveting die is not completely opened, and the influence of the composite material on other results and the environment is avoided.
The foregoing embodiments may be partially modified in numerous ways by those skilled in the art without departing from the principles and spirit of the invention, the scope of which is defined in the claims and not by the foregoing embodiments, and all such implementations are within the scope of the invention.
Claims (11)
1. A ring laser auxiliary rivetless riveting method for a composite material and a metal material is characterized in that firstly, the composite material is stacked on the metal material, and laser ring cutting of the composite material is completed through ring laser, so that a regular through hole is formed; then compacting the connecting plate through the lower part of the female die to realize the pretension of the connecting plate; under the action of forming force of upward movement of the male die, the metal material is caused to generate plastic deformation and form rivetless riveting with the cutting hole of the composite material;
The female die comprises: the female die outer cylinder, the anti-jacking mechanism and the second supporting block are sequentially arranged from bottom to top; the male die mechanism comprises: the blank holder and the male die are arranged in the center of the inner part of the blank holder, and the male die is opposite to the anti-jacking mechanism.
2. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 1, wherein the anti-jacking mechanism comprises: the die is anti-top and set up in its outside spring cylinder and first supporting shoe, wherein: the female die anti-top is arranged in the inner hole of the first supporting block and extends to the inner part of the female die outer cylinder and does not protrude out of the female die outer cylinder.
3. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 2, wherein the female die outer cylinder has a two-stage structure, comprising a fixed outer cylinder and a movable outer cylinder, wherein: the fixed outer cylinder is connected with a first supporting block of the anti-jacking mechanism, and the movable outer cylinder is connected with a spring cylinder.
4. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 2, wherein the female die outer cylinder and the first support block have concentric through holes with the same size.
5. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 1, wherein the female die is provided with a female die box and a box cover plate outside, wherein: the female die outer cylinder is arranged on the inner side of the bottom of the female die box body, and the bottom of the female die outer cylinder protrudes out of the bottom of the female die box body through a through hole at the bottom of the female die box body; the concave die anti-top, the first supporting block and the upper end face of the spring cylinder are flush and are connected with the second supporting block together.
6. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 1, wherein the metal material is a metal that is easy to deform plastically, and the thickness t 13 =0.5-5.0 mm; the composite material is carbon fiber or glass fiber with thermoplastic or thermosetting resin material as matrix, and the thickness t 12 = 0.5-5.0mm.
7. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 1, wherein the laser ring cuts, and the punctiform laser is dispersed into ring laser by optical principle, wherein the width of the ring light spot is less than or equal to 0.3mm, the diameter of the ring light spot is less than or equal to 10mm, and the power of the laser source is p=at 12 -b, a=120W/mm; b=40w;
The highest temperature T of the composite material of the laser circular cutting meets the following conditions: and (3) at 12+140℃<T<et12 +190 ℃, e=30 ℃/mm, riveting can be carried out when the ring cutting is qualified, and when the highest temperature exceeds the range, the process is finished when the ring cutting is unqualified.
8. The laser-assisted rivetless riveting method of a composite material and a metal material according to any one of claims 1-7, wherein the connecting plate is pre-tensioned with a pressure of q· (t 12+t13), q=.0.125 mm/MPa.
9. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 7, wherein when the punch moves in the direction of the metal material and applies upward forming force, the metal material is plastically deformed in the direction of the die under the pressure of the punch, and the height of the produced composite material scrap is limited by the counter-top position of the die while the produced composite material scrap is ejected by the deformed metal material: the die anti-top distance d=t 12 +/-0.4 mm, when the composite scrap and the die are in anti-top contact, the composite scrap and the die jointly provide supporting force for the metal material, and under the combined action of forming force and supporting force, the metal material is thinned to 20% t 13-50％t13 at the bottom and causes the material to flow radially.
10. The method for laser assisted rivetless riveting a composite material and a metal material according to claim 1, wherein the diameter of the male die is For the cut hole diameter, the bevel angle β=2° -10 °.
11. The ring laser assisted rivetless riveting method of composite material and metal material according to claim 1, wherein after the riveting is completed, the spring cylinder in the female die is decompressed, the female die is moved by the spring tension to slide the outer cylinder upwards to form an opening, and the recovery of the cutting scraps is completed through the opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410183873.4A CN117922036A (en) | 2024-02-19 | 2024-02-19 | Annular laser-assisted rivetless riveting method for composite material and metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410183873.4A CN117922036A (en) | 2024-02-19 | 2024-02-19 | Annular laser-assisted rivetless riveting method for composite material and metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117922036A true CN117922036A (en) | 2024-04-26 |
Family
ID=90760720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410183873.4A Pending CN117922036A (en) | 2024-02-19 | 2024-02-19 | Annular laser-assisted rivetless riveting method for composite material and metal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117922036A (en) |
-
2024
- 2024-02-19 CN CN202410183873.4A patent/CN117922036A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102672062B (en) | Laser heating rivetless riveting device | |
| KR100743857B1 (en) | Extruvet bonding apparatus and method of metal plates by plasticity flow | |
| CN108838494B (en) | Resistance welding fasteners, apparatus and methods for joining homogeneous and heterogeneous materials | |
| US9718265B2 (en) | Method for producing a composite sheet metal part having a metallic region, and corresponding molding tool | |
| CN202621742U (en) | Laser heating rivet-free riveting device | |
| CN103600017A (en) | Self-piercing riveting device of ultrahigh strength steel plates or/and aluminum alloy plates | |
| EP3153303B1 (en) | Method for obtaining a welded joint between elements of different materials, and a hybrid component obtained through this method | |
| JP2003503206A (en) | Projection welding structure of aluminum sheet | |
| CN107139517B (en) | A kind of drawing and forming device and method of the non-axisymmetric parts of difficult-to-deformation material | |
| CN101934339A (en) | Ring-shaped electro-plastic rivet-free riveting device | |
| CN101244445A (en) | Press cutting, force fit device for compound film cover plate of aluminium plastic composite pop-top cap shaping apparatus | |
| CN203599461U (en) | Self-piercing riveting device between ultrahigh-strength steel plates or between ultrahigh-strength steel plate and aluminum alloy plate | |
| CN117922036A (en) | Annular laser-assisted rivetless riveting method for composite material and metal material | |
| CN111822578B (en) | Electroplastic assisted laser impact deep drawing forming device and method | |
| CN105364296B (en) | The welding method and its welder of a kind of lithium battery pole ear | |
| JP7084395B2 (en) | How to weld a stack of sheets with a magnetic pulse | |
| CN1059675A (en) | The continuous hot-rolling method of steel plate and joint method | |
| CN107932927B (en) | Thermoplastic carbon fiber composite material and alloy self-piercing riveting device and riveting method | |
| CN102284801A (en) | Bimetal strip welding method | |
| CN213944755U (en) | Double-end electromagnetism is from dashing riveter | |
| CN107249771B (en) | Component for manufacturing the method for the component being made of sandwich material and being made of sandwich material | |
| CN118024599A (en) | Laser-assisted rivetless riveting device and method for resin matrix composite material and metal material | |
| KR20190079996A (en) | Self piercing rivet system | |
| CN110977164B (en) | Progressive laser impact ultrathin sheet continuous rivet welding device and rivet welding method | |
| CN217316356U (en) | Swing type material piece conveying device for resistance spot welding of light metal and steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |