CN111659845B - Spiral riveting lock welding device and method for explosive impact forming - Google Patents
Spiral riveting lock welding device and method for explosive impact forming Download PDFInfo
- Publication number
- CN111659845B CN111659845B CN202010535223.3A CN202010535223A CN111659845B CN 111659845 B CN111659845 B CN 111659845B CN 202010535223 A CN202010535223 A CN 202010535223A CN 111659845 B CN111659845 B CN 111659845B
- Authority
- CN
- China
- Prior art keywords
- rivet
- spiral
- upper plate
- primer
- shell
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 36
- 239000002360 explosive Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003825 pressing Methods 0.000 claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 238000004880 explosion Methods 0.000 claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 238000010304 firing Methods 0.000 claims description 34
- 239000000463 material Substances 0.000 claims description 29
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 5
- 210000000245 forearm Anatomy 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000007790 solid phase Substances 0.000 claims description 3
- 238000010301 surface-oxidation reaction Methods 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 8
- 235000017491 Bambusa tulda Nutrition 0.000 description 8
- 241001330002 Bambuseae Species 0.000 description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 8
- 239000011425 bamboo Substances 0.000 description 8
- 238000004064 recycling Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000794 TRIP steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
- B21J15/16—Drives for riveting machines; Transmission means therefor
- B21J15/18—Drives for riveting machines; Transmission means therefor operated by air pressure or other gas pressure, e.g. explosion pressure
- B21J15/185—Drives for riveting machines; Transmission means therefor operated by air pressure or other gas pressure, e.g. explosion pressure by explosion pressure
-
- 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
- B21J15/025—Setting self-piercing rivets
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/05—Bolts fastening by swaged-on collars
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B19/00—Bolts without screw-thread; Pins, including deformable elements; Rivets
- F16B19/04—Rivets; Spigots or the like fastened by riveting
- F16B19/06—Solid rivets made in one piece
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
Abstract
The invention provides a spiral rivet lock welding device for explosive impact forming, which comprises: the device comprises an implementation mechanism, a rivet unit, a guide edge pressing mechanism and a controller; the rivet units are stored in a rivet box in a centralized mode, the implementation mechanism can move, the implementation mechanism is used for taking the rivet units from the rivet box, placing the rivet units on the guiding edge pressing mechanism and triggering the rivet units, the guiding edge pressing mechanism is pressed on the upper plate and the lower plate in advance, the guiding edge pressing mechanism is used for pressing the upper plate and the lower plate on a flat die, the controller is electrically connected with the implementation mechanism and the guiding edge pressing mechanism respectively, and the controller is used for controlling the motion of the implementation mechanism and the pressing of the guiding edge pressing mechanism; a method of explosion impact formed screw clinch welding is also provided. The invention has reasonable structural design, high operation automation degree, high connection point precision, strong mechanical property and torque resistance, and can efficiently complete the connection of plates.
Description
Technical Field
The invention relates to the technical field of rivet connection, in particular to a spiral rivet lock welding device and method for explosive shock forming.
Background
With the successive introduction of the national mandatory laws and regulations of automobile head-on collision, side collision, emission and the like, in order to ensure the structural strength of automobiles and reduce the emission, the adoption of advanced high-strength steel (such as DP steel, TRIP steel and high-hole-expansion steel) and aluminum alloy has become the mainstream trend of automobile materials without controversial. The two materials are matched to effectively reduce the weight of the automobile body and reduce the oil consumption, and the safety and the comfort of the automobile type can be ensured and improved. SPR self-piercing riveting is taken as a connecting technology capable of connecting steel-aluminum composite plates, is favored by automobile manufacturers, and is fully applied to design and manufacture of automobile bodies.
Self-piercing riveting is a cold joining technique used to join two or more metal sheets. The principle of the method is that a special rivet is directly pressed into a plate to be riveted, the plate to be riveted and the rivet are subjected to plastic deformation under the pressure action of the rivet, the rivet penetrates through an upper plate and is expanded to enter a next layer of plate, then the rivet and the plate are expanded together to fill a riveting die, and the legs of the rivet are turned over to the periphery to form buttons, so that the upper plate and the lower plate are firmly connected. The technology realizes that punching and riveting are completed at one time, and the plating layer of the plate is not damaged in the connecting process, thereby opening up a new way for connecting the automobile body. However, since the special rivet of the self-piercing riveting technique needs to penetrate the upper plate, the metal sheet has internal damage, with a high risk of corrosion; and the self-piercing riveting has high sensitivity to negative production influences (such as gaps between plates and manufacturing errors of a die); in addition, after connection, the plates rebound, the size precision of the connection points is not high, and the connection points resist torque by friction and are easy to rotate in the circumferential direction.
Disclosure of Invention
The invention provides a spiral rivet lock welding device and method for explosion impact forming, and aims to solve the problems that self-piercing riveting is easy to damage a plate, high in sensitivity, low in size precision of a connecting point and easy to generate circumferential rotation.
In order to achieve the above object, an embodiment of the present invention provides an explosion impact forming spin lock welding apparatus, including:
the device comprises an implementation mechanism, a rivet unit, a guide edge pressing mechanism and a controller;
rivet unit concentrates to be deposited in a rivet incasement, implementation mechanism is movable, implementation mechanism is used for following the rivet case is taken the rivet unit is placed direction blank holder mechanism is last and will rivet unit percussion, direction blank holder mechanism presses in advance and puts on upper plate and hypoplastron, direction blank holder mechanism be used for with upper plate and hypoplastron compress tightly on the flat die, the controller electricity is connected respectively implementation mechanism and direction blank holder mechanism, the controller is used for controlling implementation mechanism's motion and direction blank holder mechanism compress tightly.
The implement mechanism is provided with a base, a supporting rod is vertically arranged on the base, a telescopic rear arm is arranged on the supporting rod, a transfer seat is fixedly arranged at the front end of a telescopic rod of the telescopic rear arm, the bottom of the transfer seat is connected with a telescopic front arm, a clamping and firing device is arranged at the bottom of the telescopic front arm, and the controller is electrically connected with the telescopic rear arm and the telescopic front arm.
Wherein, centre gripping trigger device includes grip slipper and mechanical clamping jaw, the grip slipper is fixed to be set up the bottom of flexible forearm, mechanical clamping jaw sets up the bottom of grip slipper, the bottom surface center of grip slipper inlays and is equipped with a firing pin sharp push rod, the fixed firing pin that is provided with on the actuating lever of firing pin sharp push rod, the controller with firing pin sharp push rod and mechanical clamping jaw electricity are connected.
The rivet unit comprises a primer cover, a primer baffle, explosive, a rivet shell and a rivet head, wherein the primer cover and the primer baffle jointly form an airtight space, the primer is filled in the airtight space, a groove is formed in the upper end of the rivet shell, a through hole is formed in the center of the groove, the primer cover, the primer and the primer baffle are embedded in the groove, the explosive is filled in the rivet shell, and the rivet head is plugged at the lower end opening of the rivet shell.
The rivet head is of a cylinder structure, and a plurality of trapezoidal spiral protrusions are arranged on the side face of the rivet head.
Wherein the lower end of the rivet shell is inclined inwards, and the radius of the lower end of the rivet shell is smaller than that of the upper end of the rivet shell.
Wherein, direction blank pressing mechanism is provided with a blank pressing section of thick bamboo, the top of blank pressing section of thick bamboo is loudspeaker form opening, the top opening shape of blank pressing section of thick bamboo with rivet shell shape adaptation, the bottom outside of blank pressing section of thick bamboo is provided with the blank pressing seat, there is the shaft coupling both sides of blank pressing seat through bolt fixed mounting, the shaft coupling top is provided with blank pressing sharp push rod, the top of blank pressing sharp push rod is fixed, the output shaft setting of blank pressing sharp push rod is in the inside of shaft coupling, the controller with blank pressing sharp push rod electricity is connected.
Wherein, the bottom opening of the blank holder is provided with a flaring.
Wherein, still include: the rivet shell recovery box is arranged on one side of the guiding and edge pressing mechanism, and the rivet shell recovery box is arranged on the other side of the guiding and edge pressing mechanism relative to the rivet box.
The embodiment of the invention also provides a rivet welding method for the spiral lock formed by explosion impact, which comprises the following steps:
the method comprises the following steps: placing an upper plate and a lower plate on a flat die in advance, pressing the upper plate and the lower plate by using a blank holder, clamping the rivet unit by using a mechanism, and placing the rivet unit at the upper port of the blank holder;
step two: after the rivet unit is placed, a telescopic rod of a firing linear push rod extends to drive a firing pin to strike and penetrate through the primer cover, primer is fired due to the striking of the firing pin and penetrates through a primer baffle plate so as to ignite explosive placed in a rivet shell, the explosive explodes, the tail of a rivet head is subjected to huge impact force, the rivet head moves downwards at a high speed, and under the high-pressure condition in a blank holder channel, the rivet head slightly rotates under the action of windward wind and airflow due to a trapezoidal spiral bulge and shoots at the upper plate and the lower plate at a high speed;
step three: after the rivet head is shot into the upper plate, the two layers of plates are stressed to generate plastic deformation, the two layers of plate materials move outwards along the radial direction and are influenced by the blank holding force of the pressure side cylinder, the outward expansion of the materials is prevented from starting to move upwards, the materials of the upper plate are gathered to the flaring near the rivet head, the materials of the lower plate are gradually gathered at the neck part of the upper plate, the plates are hooked to form a mechanical lock, under the action of the trapezoidal spiral protrusion of the rivet head, the upper plate is pressed to generate a corresponding spiral recess, the back surface of the spiral recess forms a spiral protrusion, the lower plate is extruded by the spiral protrusion of the upper plate to form a spiral recess at the corresponding position, the trapezoidal spiral protrusion of the rivet head and the extrusion deformation structures on the two plates form a spiral lock together, meanwhile, the rivet head impacts the plates to form jet flow, the surface oxidation film of the materials under the rivet head is removed, the solid-phase welding at the bottom of the connecting point is realized, and the rivet head speed returns to zero along with the gradual aggravation of the deformation of the plate;
step four: and after the rivet head stops moving, the implementing mechanism sends the rivet shell into the rivet shell recovery box, the edge pressing force of the edge pressing cylinder is gradually withdrawn, and the plate connection is completed.
The scheme of the invention has the following beneficial effects:
(1) the connection part of the plates is provided with a special spiral lock welding structure; protruding screw in upper plate of a plurality of trapezoidal spiral of rivet head, the upper plate also produces the protruding screw in hypoplastron of spiral, make the hypoplastron receive the extrusion of upper plate and form corresponding spiral sunken, the trapezoidal spiral of rivet head is protruding and the extrusion deformation structure of upper plate and hypoplastron between have constituted the spiral lock jointly, the spiral lock makes panel resist the moment of torsion, can not circumferential direction, and also have the effect of panel about certain connection, the material gathering of hypoplastron is at the upper plate neck simultaneously, upper and lower panel forms the mechanical lock, and connect the bottom and formed stable solid state welding, this kind of spiral lock welding intensity is higher, possess excellent mechanical properties.
(2) The invention utilizes the principle of explosion forming for connection, the materials at the material connection part are mainly compressive stress, so that the grains of the materials at the connection part are thinner and more compact, the materials have no potential damage, the mechanical property of the joint is improved, and meanwhile, the explosion forming speed is high and the efficiency is high.
(3) The upper side plate cannot be sheared by the impact of the rivet head, and the corrosion resistance of a connecting point is high; the flat die is used as the lower die, so that the negative influence is not sensitive.
(4) The rivet unit impacts the plate by virtue of explosion, the connection size precision is high, and after connection, the material does not rebound.
(5) The high-speed impact of the rivet head generates a large amount of heat, and the heat is transferred to the plate, so that the plastic forming capacity of the plate is improved, and the method can be used for connecting high-strength plates which are difficult to form.
Drawings
FIG. 1 is a first schematic structural view of an explosion impact formed screw rivet lock welding device according to the present invention;
FIG. 2 is a second schematic structural view of the spiral rivet lock welding device for explosive shock forming according to the present invention;
FIG. 3 is a cross-sectional view of a rivet unit of the explosive shock formed spin lock welding apparatus of the present invention;
FIG. 4 is a schematic structural view of a rivet head of the spiral rivet lock welding device for explosive impact forming according to the present invention;
FIG. 5 is a schematic view of a blank holder cylinder of the spiral rivet lock welding device for explosive shock forming according to the present invention;
FIG. 6 is a simplified flow diagram of the explosive shock formed spin rivet lock welding method of the present invention;
FIG. 7 is a cross-sectional view of the resulting connection of the explosion impact formed spin rivet lock weld of the present invention;
FIG. 8 is a top view cross-sectional view of FIG. 7 of the explosion impact formed spin rivet weld of the present invention;
FIG. 9 is a schematic view showing the joining result of the explosion impact formed spin lock weld of the present invention.
[ description of reference ]
1-an implementation mechanism; 2-a rivet unit; 3-guiding edge pressing mechanism; 4-a controller; 5-rivet box; 6 a-upper plate; 6 b-lower plate; 7-flat die; 8-rivet shell recovery box; 101-a base; 102-a support bar; 103-telescoping rear arm; 104-a telescopic rod; 105-an adapter; 106-telescoping forearm; 107-a clamping seat; 108-a mechanical jaw; 109-firing pin straight line push rod; 110-firing pin; 201-bottom fire cover; 202-primer; 203-primer baffles; 204-explosive; 205-rivet shell; 206-rivet head; 206 a-trapezoidal spiral protrusions; 301-blank holder; 301 a-a crimping base; 301 b-flaring; 302-a coupling; 303-pressing the edge of the straight push rod; 601-mechanical lock; 602-spiral recess; 603-metallurgical bonding.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a spiral riveting lock welding device and method for explosive impact forming, aiming at the problems that the existing self-piercing riveting is easy to damage plates, high in sensitivity, low in size precision of connecting points and easy to generate circumferential rotation.
As shown in fig. 1, an embodiment of the present invention provides an explosion impact formed spin rivet lock welding apparatus, including: the device comprises an implementation mechanism 1, a rivet unit 2, a guiding and edge pressing mechanism 3 and a controller 4; rivet unit 2 concentrates to be deposited in a rivet case 5, implementation mechanism 1 is movable, implementation mechanism 1 is used for following rivet case 5 is taken rivet unit 2 is placed on direction blank pressing mechanism 3 and with rivet unit 2 percussion, direction blank pressing mechanism 3 is pressed in advance and is put on upper plate 6a and hypoplastron 6b, direction blank pressing mechanism be used for with upper plate 6a and hypoplastron 6b compress tightly on flat die 7, controller 4 electricity respectively is connected implementation mechanism 1 and direction blank pressing mechanism 3, controller 4 is used for control implement mechanism 1's motion and direction blank pressing mechanism 3's compressing tightly.
According to the spiral riveting lock welding device for explosion impact forming in the embodiment of the invention, after the upper plate 6a and the lower plate 6b are placed on the flat die 7, the two plates are pressed tightly through the guiding edge pressing mechanism 3, meanwhile, the implementing mechanism 1 is used for taking the rivet unit 2 and moving the rivet unit 2 to a place needing riveting, the implementing mechanism 1 and the guiding edge pressing mechanism 3 are mutually matched to enable the rivet unit 2 to rivet the two plates, and meanwhile, due to the controller 4, the operation can be automatically completed through the controller 4, so that the plate connecting efficiency is improved, and the safety of the connecting process is improved.
As shown in fig. 2, the implementation mechanism 1 is provided with a base 101, a supporting rod 102 is vertically arranged on the base 101, a telescopic rear arm 103 is arranged on the supporting rod 102, a transition seat 105 is fixedly arranged at the front end of a telescopic rod 104 of the telescopic rear arm 103, a telescopic front arm 106 is connected to the bottom of the transition seat 105, a clamping and firing device is arranged at the bottom of the telescopic front arm 106, and the controller 4 is electrically connected with the telescopic rear arm 103 and the telescopic front arm 106.
Wherein, centre gripping firing device includes grip slipper 107 and mechanical clamping jaw 108, grip slipper 107 is fixed to be set up the bottom of flexible forearm 106, mechanical clamping jaw 108 sets up the bottom of grip slipper 107, the bottom surface center of grip slipper 107 inlays and is equipped with a firing pin sharp push rod 109, the fixed firing pin 110 that is provided with on the actuating lever of firing pin sharp push rod 109, controller 4 with firing pin sharp push rod 109 and mechanical clamping jaw 108 electricity are connected.
As shown in fig. 3, the rivet unit includes a primer cover 201, a primer 202, a primer baffle 203, an explosive 204, a rivet shell 205 and a rivet head 206, the primer cover 201 and the primer baffle 203 jointly form a closed space, the primer 202 is filled in the closed space, a groove is formed in the upper end of the rivet shell 205, a through hole is formed in the center of the groove, the primer cover 201, the primer 202 and the primer baffle 203 are embedded in the groove, the explosive 204 is filled in the rivet shell 205, and the rivet head 206 is plugged at the lower opening of the rivet shell 205.
In the spiral rivet lock welding device for explosive shock forming according to the above embodiment of the present invention, the telescopic rear arm 103 can freely extend and retract the telescopic rod 104 at the front end under the control of the controller 4, and the telescopic front arm 106 can also extend and retract under the control of the controller 4, so that the implementation mechanism 1 can move in a vertical plane; in this embodiment, the mechanical clamping jaw 108 is a three-jaw clamping jaw, and in addition, a clamping device with more than three clamping jaws can be adopted, the mechanical clamping jaw 108 can move to a proper position to clamp the rivet unit 2 through the telescopic front arm 106 and the telescopic rear arm 103 under the control of the controller 4, and then move to the guiding and edging mechanism 3 through the telescopic front arm 106 and the telescopic rear arm 103 after clamping, the firing pin linear push rod 109 is controlled by the controller 4 to move the firing pin 110, the firing pin 110 can penetrate through the primer cover 201, the primer 202 arranged in the primer cover 201 can explode and melt the primer baffle 203, so as to ignite the explosive 204 in the rivet shell 205, the explosive 204 will be combusted and exploded to drive the rivet head 206 to advance towards the lower opening of the rivet shell 205, and is guided to rivet by the guiding and pressing mechanism 3.
As shown in fig. 4, the rivet head 206 is a cylindrical structure, and a plurality of trapezoidal spiral protrusions 206a are disposed on the side of the rivet head 206.
In the spiral rivet lock welding device for explosive shock forming according to the above embodiment of the present invention, eight trapezoidal spiral protrusions 206a are disposed on the side surface of the rivet head 206, and the trapezoidal spiral protrusions 206a are uniformly arranged.
Wherein the lower end of the rivet shell 205 is inclined inward, and the radius of the lower end of the rivet shell 205 is smaller than that of the upper end of the rivet shell 205.
Wherein, direction blank holder mechanism 3 is provided with a blank holder section of thick bamboo 301, the top of blank holder section of thick bamboo 301 is loudspeaker form opening, blank holder section of thick bamboo 301 the top open-ended shape with 205 shape adaptations of rivet shell, the bottom outside of blank holder section of thick bamboo 301 is provided with blank holder 301a, there is shaft coupling 302 clamp the both sides of blank holder 301 through bolt fixed mounting, the shaft coupling 302 top is provided with blank holder sharp push rod 303, blank holder sharp push rod 303's top is fixed, blank holder sharp push rod 303's output shaft sets up shaft coupling 302's inside, controller 4 with blank holder sharp push rod 303 electricity is connected.
In the spiral rivet lock welding device for explosive shock forming according to the above embodiment of the present invention, the upper portion of the rivet shell 205 is a cylindrical container, and the lower end of the rivet shell 205 is shrunk so that the rivet head 206 is fixed at the lower port of the rivet shell 205, so that the rivet shell 205 can be clamped in the top opening of the blank holder 301, and the rivet head 206 can pass through the channel of the blank holder 301; the top opening of blank holder 301 is the loudspeaker form in order to adapt to the lower extreme constriction structure of rivet shell 205, when blank holder 301 is placed on the panel, controller 4 can control blank holder straight line push rod 303's output shaft pushes down, thereby the order blank holder 301 compresses tightly the panel between the bottom surface of flat die 7 and blank holder 301.
As shown in fig. 5, the bottom opening of the edge pressing cylinder 301 is opened with a flared opening 301 b.
In the spiral rivet lock welding device for explosion impact forming according to the above embodiment of the present invention, the flared opening 301b enables the sheet material to deform in a sufficient space to generate a mechanical lock structure when the rivet head 206 impacts the sheet material.
Wherein, still include: the rivet shell recycling bin 8, the rivet box 5 sets up one side of direction blank pressing mechanism 3, the rivet shell recycling bin 8 is relative the rivet box 5 sets up the opposite side of direction blank pressing mechanism 3.
In the spiral rivet lock welding device for explosive impact forming according to the above embodiment of the present invention, the rivet case recycling box 8 is disposed opposite to the rivet box 5, and the implementing mechanism 1 places the rivet case 205 in the rivet case recycling box 8 after completing riveting.
As shown in fig. 6, an embodiment of the present invention provides a spiral rivet lock welding method of explosive impact forming, including:
the method comprises the following steps: the rivet unit 2 is fed to the rivet box 5, the edge pressing cylinder 301 is arranged on the upper plate 6a and the lower plate 6b, the start equipment controls the edge pressing linear push rod 303 through the controller 4 to enable the edge pressing cylinder 301 to generate edge pressing force, the telescopic front arm 106 extends, the mechanical clamping jaw 108 contracts to tightly grasp the rivet unit 2, the telescopic front arm 106 shortens, the telescopic rear arm 103 extends simultaneously, the telescopic front arm 106 stops shortening after shortening to a certain position, at the moment, the clamping part horizontally moves, the mechanical clamping jaw 108 stops moving when being located above the edge pressing cylinder 301 and coaxial with the edge pressing cylinder 301, and the telescopic front arm 106 stops extending.
Step two: after the rivet unit 2 is placed, the firing pin linear push rod 109 starts to work, the shaft of the firing pin linear push rod 109 starts to extend, so that the firing pin 110 moves forward, penetrates through the primer cover 201, contacts with the primer 202, the primer 202 burns violently under the impact of the firing pin 110, the primer baffle 203 is melted, the flame passes through the small hole, the explosive 204 placed in the rivet shell 205 is ignited, the explosive 204 explodes, under the action of the explosive 204, the tail part of the rivet head 206 is subjected to huge impact force, the rivet shell 205 moves forward, the rivet shell 205 is kept still under the clamping of the mechanical clamping jaw 108, the upper port of the blank holder 301 is matched with the mechanical clamping jaw 108 to extrude and fix the rivet head 206, under the action of high impact force, high pressure, windward and airflow, the rivet head 206 rotates gradually, because the trapezoidal spiral bulge 206a of the rivet head 206 encloses into a circle, the rivet head 206 continuously rotates in the blank holder 301, finally, the rivet head 206 is ejected from the blank holder 301, and due to the large inertia, the rivet head 206 is ejected at a high speed with a slight rotation;
step three: the rivet head 206 is shot into an upper plate, the two layers of plates are subjected to plastic deformation under pressure, because the bottom of the flat die 7 is provided with the flat die 7 made of hard materials, the shape of the flat die 7 cannot be subjected to stress change, materials of the two plates under the rivet head 206 are extruded up and down and can move outwards along the stamping center of the rivet head 206, due to the blocking of the edge pressing force of the edge pressing cylinder 301 and the inner wall of the edge pressing cylinder 301, the outward movement of the materials is blocked, the materials of the upper plate start to move upwards, the materials of the upper plate 6a are gathered to the flaring 301b of the edge pressing cylinder 301 near the rivet head 206, the materials of the lower plate 6b are gradually gathered at the neck of the upper plate 6a, the materials of the upper plate 6a are extruded into the depression of the lower plate 6b, and the two plates are hooked together gradually to; meanwhile, as the outer side of the rivet head 206 is provided with the plurality of trapezoidal spiral protrusions 206a, the trapezoidal spiral protrusions 206a can extrude the upper plate 6a along with the rotation and the pressing of the rivet head 206, the plurality of spiral depressions 602 are formed in the corresponding positions of the upper plate 6a extruded by the trapezoidal spiral protrusions 206a, the spiral protrusions formed on the other sides of the spiral depressions 602 extrude the lower plate 6b, and the plurality of spiral depressions 602 are also formed in the corresponding positions of the inner walls of the depressions of the lower plate 6b, the deformation of the spiral depressions 602 is correspondingly promoted due to the slight rotation of the rivet head 206, the trapezoidal spiral protrusions of the rivet head and the extrusion deformation structures of the upper plate and the lower plate jointly form a spiral lock, and the spiral lock 602 has a strong connecting effect, can prevent the circumferential rotation of a connecting point and resists torque; in the process, the rivet head 206 impacts the plate at a high speed to form jet flow, an oxide film on the surface of the material below the rivet head 206 is removed, meanwhile, a stable metallurgical connection 603 is formed between the plate and the rivet head 206 under the action of high pressure of shock waves, heat generated by explosion can be gathered at the connection point, so that the materials are further fused, solid-phase welding at the bottom of the connection point is further realized, the speed of the rivet head 206 is gradually reduced to 0 along with the gradual increase of the deformation of the plate, and the connection point structure is shown in fig. 7, 8 and 9;
step four: after the rivet head stops moving, the shaft of the firing pin linear push rod 109 contracts, the firing pin 110 contracts, the telescopic front arm 106 contracts, the mechanical clamping jaw 108 clamps the rivet shell 205 to move upwards, after the rivet head reaches a specific position, the telescopic front arm 106 and the telescopic rear arm 103 simultaneously extend, the rivet shell 205 is sent into the rivet shell recovery box 8, the shaft of the blank pressing linear push rod 303 contracts, and the blank pressing force is gradually withdrawn; finally, a connecting plate with explosion-welded screw lock structure is obtained on the flat die 7.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides an explosion strikes fashioned spiral rivet lock welding device which characterized in that includes: the device comprises an implementation mechanism, a rivet unit, a guide edge pressing mechanism and a controller;
the rivet units are stored in a rivet box in a centralized mode, the implementation mechanism can move, the implementation mechanism is used for taking the rivet units from the rivet box, placing the rivet units on the guiding edge pressing mechanism and triggering the rivet units, the guiding edge pressing mechanism is pressed on the upper plate and the lower plate in advance, the guiding edge pressing mechanism is used for pressing the upper plate and the lower plate on a flat die, the controller is electrically connected with the implementation mechanism and the guiding edge pressing mechanism respectively, and the controller is used for controlling the motion of the implementation mechanism and the pressing of the guiding edge pressing mechanism;
the rivet unit comprises a primer cover, a primer baffle, explosive, a rivet shell and a rivet head, wherein the primer cover and the primer baffle jointly form a closed space, the primer is filled in the closed space, the upper end of the rivet shell is provided with a groove, the center of the groove is provided with a through hole, the primer cover, the primer and the primer baffle are embedded in the groove, the explosive is filled in the rivet shell, and the rivet head is plugged at the opening at the lower end of the rivet shell; the lower end of the rivet shell is inclined inwards, and the radius of the lower end of the rivet shell is smaller than that of the upper end of the rivet shell;
the direction blank pressing mechanism is provided with a blank pressing cylinder, the top of blank pressing cylinder is loudspeaker form opening, the top opening shape of blank pressing cylinder with rivet shell shape adaptation, the bottom outside of blank pressing cylinder is provided with the blank pressing seat, there is the shaft coupling both sides of blank pressing seat through bolt fixed mounting, the shaft coupling top is provided with blank pressing sharp push rod, the upper portion of blank pressing sharp push rod is fixed, the output shaft setting of blank pressing sharp push rod is in the inside of shaft coupling, the controller with blank pressing sharp push rod electricity is connected.
2. The spiral rivet lock welding device of claim 1, wherein the implementation mechanism is provided with a base, a support rod is vertically arranged on the base, a telescopic rear arm is arranged on the support rod, a transfer seat is fixedly arranged at the front end of a telescopic rod of the telescopic rear arm, a telescopic front arm is connected to the bottom of the transfer seat, a clamping and firing device is arranged at the bottom of the telescopic front arm, and the controller is electrically connected with the telescopic rear arm and the telescopic front arm.
3. The spiral rivet lock welding device formed by explosive impact according to claim 2, wherein the clamping firing device comprises a clamping seat and a mechanical clamping jaw, the clamping seat is fixedly arranged at the bottom of the telescopic forearm, the mechanical clamping jaw is arranged at the bottom of the clamping seat, a firing pin linear push rod is embedded in the center of the bottom surface of the clamping seat, a firing pin is fixedly arranged on a driving rod of the firing pin linear push rod, and the controller is electrically connected with the firing pin linear push rod and the mechanical clamping jaw.
4. The spiral rivet lock welding device formed by explosive impact according to claim 3, wherein the rivet head is of a cylindrical structure, and a plurality of trapezoidal spiral protrusions are arranged on the side face of the rivet head.
5. The spiral rivet lock welding device for explosive shock forming of claim 4, wherein the bottom opening of the blank holder is opened with a flaring.
6. The explosive blast shaped spin lock weld apparatus of claim 5, further comprising: the rivet shell recovery box is arranged on one side of the guiding and edge pressing mechanism, and the rivet shell recovery box is arranged on the other side of the guiding and edge pressing mechanism relative to the rivet box.
7. A spiral rivet lock welding method of explosion impact forming using the spiral rivet lock welding device of explosion impact forming according to claim 6, characterized by comprising:
the method comprises the following steps: placing an upper plate and a lower plate on a flat die in advance, pressing the upper plate and the lower plate by using a blank holder, clamping a rivet unit by using an implementation mechanism, and placing the rivet unit at an opening at the top of the blank holder;
step two: after the rivet unit is placed, a driving rod of a firing pin linear push rod extends out to drive a firing pin to strike and penetrate through the primer cover, primer is burnt due to striking of the firing pin and is melted through a primer baffle plate to ignite explosive placed in a rivet shell, the explosive explodes, the tail of a rivet head is subjected to huge impact force, the rivet head moves downwards at a high speed, and under the high-pressure condition in a blank holder channel, the rivet head slightly rotates under the action of windward wind and airflow due to the trapezoidal spiral bulge and shoots at the upper plate and the lower plate at a high speed;
step three: after the rivet head is shot into the upper plate, the two layers of plates are stressed to generate plastic deformation, the two layers of plate materials move outwards along the radial direction and are influenced by the blank holding force of the pressure side cylinder, the outward expansion of the materials is prevented from starting to move upwards, the materials of the upper plate are gathered to the flaring near the rivet head, the materials of the lower plate are gradually gathered at the neck part of the upper plate, the plates are hooked to form a mechanical lock, the upper plate is pressed to generate corresponding spiral depressions under the action of the trapezoidal spiral protrusions of the rivet head, the back surface of the upper plate forms spiral protrusions, the lower plate is extruded by the spiral protrusions of the upper plate to form spiral depressions at corresponding positions, the trapezoidal spiral protrusions of the rivet head and the extrusion deformation structures on the two plates form a spiral lock together, meanwhile, the rivet head impacts the plates to form jet flow, the material surface oxidation film under the rivet head is removed, and the two layers of plates form stable metallurgical connection, the solid-phase welding at the bottom of the connecting point is realized, and the rivet head speed returns to zero along with the gradual aggravation of the deformation of the plate;
step four: and after the rivet head stops moving, the implementing mechanism sends the rivet shell into the rivet shell recovery box, the edge pressing force of the edge pressing cylinder is gradually withdrawn, and the plate connection is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010535223.3A CN111659845B (en) | 2020-06-12 | 2020-06-12 | Spiral riveting lock welding device and method for explosive impact forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010535223.3A CN111659845B (en) | 2020-06-12 | 2020-06-12 | Spiral riveting lock welding device and method for explosive impact forming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111659845A CN111659845A (en) | 2020-09-15 |
| CN111659845B true CN111659845B (en) | 2021-04-27 |
Family
ID=72387333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010535223.3A Active CN111659845B (en) | 2020-06-12 | 2020-06-12 | Spiral riveting lock welding device and method for explosive impact forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111659845B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113020323A (en) * | 2021-03-24 | 2021-06-25 | 大连理工大学 | Local small-feature impact forming device and method for metal thin-wall curved surface part |
| CN113042598A (en) * | 2021-03-24 | 2021-06-29 | 大连理工大学 | Local small feature, metal thin-wall part and metal thin-wall pipe forming device and method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040096295A1 (en) * | 2002-11-18 | 2004-05-20 | Robin Stevenson | Spiraled self-piercing rivet |
| US6988862B1 (en) * | 1999-10-26 | 2006-01-24 | Toyota Jidosha Kabushiki Kaisha | Rivet, riveted joint structure riveting apparatus, and riveting method |
| CN1733387A (en) * | 2004-08-12 | 2006-02-15 | 中国科学院金属研究所 | A kind of explosion type is from riveting equipment and method |
| CN103423270A (en) * | 2012-05-25 | 2013-12-04 | (株)星宇Hitech | Self-tapping rivet |
| CN204159812U (en) * | 2014-10-20 | 2015-02-18 | 南阳北方红宇机电制造有限公司 | For the device of submunition fuze stabilized zone riveted joint |
| CN207326887U (en) * | 2017-06-29 | 2018-05-08 | 天津市亿仁五金制品有限公司 | A kind of nailing bolt |
| CN108273924A (en) * | 2018-01-22 | 2018-07-13 | 西安石油大学 | The two-sided flat no riveting joint forming technique of lightweight plank |
| KR102072171B1 (en) * | 2014-01-16 | 2020-01-31 | 아틀라스 콥코 아이에이에스 유케이 리미티드 | Method of riveting |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180044624A (en) * | 2016-10-24 | 2018-05-03 | 주식회사 성우하이텍 | Self piercing rivet of helical |
-
2020
- 2020-06-12 CN CN202010535223.3A patent/CN111659845B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6988862B1 (en) * | 1999-10-26 | 2006-01-24 | Toyota Jidosha Kabushiki Kaisha | Rivet, riveted joint structure riveting apparatus, and riveting method |
| US20040096295A1 (en) * | 2002-11-18 | 2004-05-20 | Robin Stevenson | Spiraled self-piercing rivet |
| CN1733387A (en) * | 2004-08-12 | 2006-02-15 | 中国科学院金属研究所 | A kind of explosion type is from riveting equipment and method |
| CN103423270A (en) * | 2012-05-25 | 2013-12-04 | (株)星宇Hitech | Self-tapping rivet |
| KR102072171B1 (en) * | 2014-01-16 | 2020-01-31 | 아틀라스 콥코 아이에이에스 유케이 리미티드 | Method of riveting |
| CN204159812U (en) * | 2014-10-20 | 2015-02-18 | 南阳北方红宇机电制造有限公司 | For the device of submunition fuze stabilized zone riveted joint |
| CN207326887U (en) * | 2017-06-29 | 2018-05-08 | 天津市亿仁五金制品有限公司 | A kind of nailing bolt |
| CN108273924A (en) * | 2018-01-22 | 2018-07-13 | 西安石油大学 | The two-sided flat no riveting joint forming technique of lightweight plank |
Non-Patent Citations (2)
| Title |
|---|
| 冲击式自穿孔铆接方法及其接头性能;汪彬等;《焊接学报》;20060525;第27卷(第05期);43-46 * |
| 汪彬等.冲击式自穿孔铆接方法及其接头性能.《焊接学报》.2006,第27卷(第05期),43-46. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111659845A (en) | 2020-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111659845B (en) | Spiral riveting lock welding device and method for explosive impact forming | |
| CN101856713B (en) | Electromagnetic riveting press suitable for large-diameter rivets and press riveting method thereof | |
| CN101890473B (en) | Portable low-voltage electromagnetism riveter | |
| US10442066B2 (en) | Driver | |
| JPH09108767A (en) | Rivet tightening device and operating method for said device | |
| CN101920302A (en) | Electroplastic self-piercing riveting device | |
| CN102248112B (en) | Stirring friction riveting device and method for light metal plate | |
| KR20080098607A (en) | Blind rivet and associated method | |
| CN113607004A (en) | Energy-gathering charge structure capable of forming scarf joint type metal and active double penetration bodies | |
| CN106735817A (en) | The spot welding device of full-automatic stud spot-welding machine | |
| PL187856B1 (en) | Method of and apparatus for mechanically jointing together various components | |
| CN111673027B (en) | Large titanium alloy blade upsetting blank making die with heads at two ends and blank making method thereof | |
| CN209139752U (en) | A kind of forging equipment making cutter blank | |
| CN107932927B (en) | Thermoplastic carbon fiber composite material and alloy self-piercing riveting device and riveting method | |
| CN1301165C (en) | Explosion type self-riveting equipment and method thereof | |
| CN115534859A (en) | Collide head and cutting cable complex and break open device | |
| CN107441645A (en) | One kind resets convenient efficient window breaker | |
| CN112893756A (en) | Automatic rotary disc riveting machine | |
| CN113664404B (en) | Multi-welding-point automatic pulse hot-pressing reflow soldering tool | |
| US3024666A (en) | Cartridge-powered piston type tool | |
| CN212445057U (en) | Firing assembly of nail shooter | |
| CN205674143U (en) | A kind of firing pin | |
| CN112091896A (en) | Gas nail gun capable of automatically feeding nails and preventing nails from rebounding | |
| CN218639557U (en) | Gun seat of lithium electric nail gun | |
| CN111659796B (en) | Shot-blasting formed self-punching rivet-free connecting device and method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |