CN103801813A - Composite connecting device for panels based on contravariant electric resistance welding and alternating current servo direct drive stamping - Google Patents
Composite connecting device for panels based on contravariant electric resistance welding and alternating current servo direct drive stamping Download PDFInfo
- Publication number
- CN103801813A CN103801813A CN201410022264.7A CN201410022264A CN103801813A CN 103801813 A CN103801813 A CN 103801813A CN 201410022264 A CN201410022264 A CN 201410022264A CN 103801813 A CN103801813 A CN 103801813A
- Authority
- CN
- China
- Prior art keywords
- heating
- sheet material
- nut
- resistance welding
- electrode plate
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/02—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal by folding, e.g. connecting edges of a sheet to form a cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/02—Pressure butt welding
Abstract
The invention discloses a composite connecting device for panels based on contravariant electric resistance welding and alternating current servo direct drive stamping. The composite connecting device comprises a power source, a heating structure and a stamping mechanism, wherein the heating structure and the stamping mechanism are arranged side by side, fixed to a machine frame and used for heating and stamping panels to be connected respectively. By means of a pulse width modulation method, the welding current is regulated, the current rising speed is controlled, the heating temperature is accurately controlled, the plasticity of the panels is enhanced through heating, electrification is stopped when the deformation temperature of the panels to be connected is reached or the deformation temperature of one kind of panels is reached, or otherwise the heating continues, and after power failure, the heated area of the panel is moved to a plunger chip to be stamped. The movement of electrodes in the heating structure and the movement of a plunger chip in the stamping structure are accurately controlled through a servo motor, the advantages of contravariant electric resistance welding and the advantages of stamping connecting are combined, the defects of the single technology are overcome, the composite connecting device can be widely applied to achieving the connection of high-strength steel plates and steel plates or other materials or achieving the non-rivet connection and locking-rivet connection of a plurality of layers of panels.
Description
Technical field
The invention belongs to automobile sheet material interconnection technique field, particularly directly drive the composite connecting device of pressing sheet material based on inversion electric resistance welding and AC servo.
Background technology
Along with the development of automobile industry, for energy-conservation, the reduction of discharging of automobile, more and more higher requirement is proposed.Actual motion proves, the every reduction by 11% of automotive dead weight, and oil consumption can reduce by 8～11%, and the discharge capacity of carbon dioxide also declines 4% thereupon.Therefore, lightweight has become the important directions of Hyundai Motor development.
The application of automotive light weight technology and lightweight material is closely related, and light weight material in automobile comprises this four large class material of steel plate, aluminium alloy, engineering plastics and magnesium alloy.At present, the connected mode of sheet material mainly contains spot welding, electric resistance welding, gas shielded arc welding and punching press and is connected four classes.Because the attribute of aluminium and aluminium alloy has determined to have some inevitable shortcomings in shaping with being connected, the problems such as that aluminium alloy resistance spot welding technology exists is very fast such as wear to electrodes, the life-span is low, it is large to splash, solder joint surface forming is poor and tack-weld quality is unstable, solve at present not yet completely.Mainly there is electrode erosion and life problems in aluminium alloy resistance spot welding.In addition aluminium and aluminium alloy should not carry out melting, conventionally adopt inert gas welding.Inert gas-shielded arc welding MIG speed of welding is fast, and quality is general, splashes larger.The content of airborne inert gas is less, and extraction cost is high.Punching press connects and comprises that lock is riveting and connect and without being riveting the two kinds of forms that connect.Lock is riveting to connect and refers to rivet under external force, by penetrating ground floor material and intermediate layer material, and in primer, flows and extends, and forms the rivet connection procedure of a plastic deformation of mutually inlaying.Connecting without rivet is in special under the effect in external force, forcing the combination of materials being connected to produce material at tie point place and flow without riveting connecting mold, forms a plastic deformation connection procedure of mutually inlaying.Can reduce manufacturing procedure compared with traditional handicraft, production efficiency is high.But lock at present riveting equipment and without riveting equipment be mainly adopt air pressure drive and hydraulic-driven.Air pressure drives has the shortcomings such as the high and noise of complex structure, cost is large; When hydraulic-driven, fluid is subject to entrained air in the impact of temperature or fluid can affect the reliability of system works, is difficult for getting rid of while breaking down; And more difficult for being connected between high-strength steel sheet and high-strength steel sheet.
Therefore, be riveting and connect and without being riveting the bonding strength and the joint link quality that connect in order further to improve the lock of plate, propose directly to drive based on inversion electric resistance welding and AC servo the composite connecting device of pressing sheet material, utilize inversion electric resistance welding principle, plate is carried out before connection to preheating, the plate after preheating is locked to be riveting again and is connect and connect without being riveting.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the object of the present invention is to provide the composite connecting device that directly drives pressing sheet material based on inversion electric resistance welding and AC servo, realize being connected of high-strength steel sheet and high-strength steel sheet or other metal material, or the connection of multi-layered board, has that equipment plastic force is low, equipment operates steadily and bonding strength advantages of higher.
In order to achieve the above object, the technical solution used in the present invention is:
Directly drive the composite connecting device of pressing sheet material based on inversion electric resistance welding and AC servo, comprise power supply and be arranged side by side be fixed on the heating arrangement to connected piece and the punching mechanism in frame 3;
Described heating arrangement comprises that the output shaft of the first servomotor 1, the first servomotor 1 is connected with the first leading screw 4, and the first nut 5 is connected on the first leading screw 4, and the first nut sleeve 7 and the first nut 5 are fixing; The first guide pillar 6 is connected on the first flange 2, and the first nut 5 slides along the first guide pillar 6, and the first servomotor 1 is fixed in frame 3 through the first flange 2; The first electrode plate 8 is connected in the first nut sleeve 7, and top electrode 9 is connected to the front end of the first electrode plate 8; The second electrode plate 11 is fixed in frame 3, and bottom electrode 10 is connected to the front end of the second electrode plate 11; Top electrode 9 and bottom electrode 10 are coaxial; Hard link copper bar 23 one end are fixed in frame 3, and the other end is connected with the second electrode plate 11; Copper sheet 22 one end that are flexible coupling are fixed in frame 3, and the other end is connected with the first electrode plate 8;
Described punching mechanism comprises the second servomotor 12, the output shaft of the second servomotor 12 is directly connected with the power shaft of decelerator 13, the output shaft of decelerator 13 is connected with the second leading screw 15, the second nut 16 is connected on the second leading screw 15, the second nut sleeve 17 is fixedly connected on the second nut 16, and second nut sleeve 17 one end are fixed on slide block 20, and slide block 20 slides along guide rail 21, guide rail 21 is fixed in frame 3, and drift 18 is connected in the second nut sleeve 17; Bed die 19 is fixed in frame 3 through lower mold holder;
Described power supply is made up of inversion resistance welding power source and servo motor power supply, is divided into two-way from the three-phase alternating current of electrical network input after rectification and filtering, and a road is inversion resistance welding power source, and a road is servo motor power supply; Inversion resistance welding power source is powered to heating arrangement, and servo motor power supply is powered to servomotor.
The sheet material of described composite connecting device connects flow process: before the heating of connected piece is referred to energising, first utilize electrode plate to pressurize to sheet material, set up contact and conductive path, keep resistance stabilization, recycling electrode plate is switched on to sheet material, regulate welding current based on pulsewidth modulation (PWM) method, control the rate of climb of electric current, control heating-up temperature, plasticity by heating with increase sheet material, the resistance of deformation while reducing the connection of sheet material pressure; Stop energising when reaching when being connected the deformation temperature of sheet material or reaching the deformation temperature of a kind of sheet material wherein, otherwise continue heating; After power-off, the region after plate heating is moved to drift position and carry out punching press; The punching press of connected piece is referred to the region touching plate is heated from drift starts, until material is full of bed die completely, forms punching press round dot.
The present invention can be connected the bilayer between high-strength steel sheet and high-strength steel sheet or other sheet metal or multilayer connects, and has low, the bonding strength advantages of higher of plastic force while connection simultaneously.
Accompanying drawing explanation
Fig. 1 is generalized section of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the right view of Fig. 1.
Fig. 4 is power supply composition diagram of the present invention.
Fig. 5 is that sheet material of the present invention connects flow chart.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See figures.1.and.2, directly drive the composite connecting device of pressing sheet material based on inversion electric resistance welding and AC servo, comprise the heating arrangement to connected piece and the punching mechanism in frame 3 that be fixed on being arranged side by side; Heating arrangement, for the tie point position plate of connected piece is heated, is heated to sheet metal deformation temperature by tie point location plate material temperature degree, increases the plasticity of material, the resistance of deformation while reducing the connection of sheet material pressure; Punching mechanism forms punching press round dot for the plate after heating is carried out to punching press in tie point position, and the plate of identical material or unlike material is linked together.
Described heating arrangement comprises that the output shaft of the first servomotor 1, the first servomotor 1 is directly connected with the first leading screw 4, and the first nut 5 is connected on the first leading screw 4, and the first nut sleeve 7 and the first nut 5 are fixing; The first guide pillar 6 is connected on the first flange 2, and the first nut 5 slides along the first guide pillar 6, and the first servomotor 1 is fixed in frame 3 through the first flange 2; The first electrode plate 8 is connected in the first nut sleeve 7, and top electrode 9 is connected to the front end of the first electrode plate 8; The second electrode plate 11 is fixed in frame 3, and bottom electrode 10 is connected to the front end of the second electrode plate 11; Top electrode 9 and bottom electrode 10 are coaxial; Hard link copper bar 23 one end are fixed in frame 3, and the other end is connected with the second electrode plate 11; Copper sheet 22 one end that are flexible coupling are fixed in frame 3, and the other end is connected with the first electrode plate 8.Drive the first leading screw 4 to rotate by the first servomotor 1, the first leading screw 4 of rotation drives the first nut 5 along the first guide pillar 6 straight line slippages, also carry out straight line slippage with the first nut sleeve 7 that the first nut 5 is connected, be fixed on the first electrode plate 8 in the first nut sleeve 7 drive top electrode 9 near or leave bottom electrode 10.When top electrode 9 is during near bottom electrode 10, can be by the plate electric discharge heating being placed between top electrode 9 and bottom electrode 10; After heating, top electrode 9 leaves bottom electrode 10 under the drive of the first servomotor 1, the plate after heating can be removed and carry out punching press.
With reference to Fig. 3, described punching mechanism comprises the second servomotor 12, the output shaft of the second servomotor 12 is directly connected with the power shaft of decelerator 13, the output shaft of decelerator 13 is connected with the second leading screw 15, and the second nut 16 is connected on the second leading screw 15, and the second nut sleeve 17 is fixedly connected on the second nut 16, second nut sleeve 17 one end are fixed on slide block 20, slide block 20 slides along guide rail 21, and guide rail 21 is fixed in frame 3, and drift 18 is connected in the second nut sleeve 17; Bed die 19 is fixed in frame 3 through lower mold holder.The second servomotor 12 output torques are after decelerator 13 conversion, pass to the second leading screw 15, the second leading screw 15 drives the second nut 16 along guide rail 21 straight line slippages, make the second nut sleeve 17 of being fixedly connected with the second nut 16 and on drift 18 near or leave bed die 19; When drift 18 is during near bed die 19, the plate after the heating being placed between drift 18 and bed die 19 can be carried out to punching press, after punching press, drift 18 leaves bed die 19 under the counter motion of the second servomotor drives.Adopt guide rail to realize the second nut 16 along straight line slippage herein, its effect is with realize the second nut 16 with guide rod identical along straight line slippage.
With reference to Fig. 4, power supply is made up of inversion resistance welding power source and servo motor power supply, is divided into two-way from the three-phase alternating current of electrical network input after rectifier 24 and wave filter 25, and a road is inversion resistance welding power source, and a road is servo motor power supply; Wherein first inversion resistance welding power source produces medium frequency alternating current through the first inverter 27 inversions, again to welding resistance transformer 28 feeds, after the second inverter 29, produce direct current, then through hard connecting copper bar 23, the second electrode plate 11, bottom electrode 10, be connected sheet material, top electrode 9, the first electrode plate 8, the copper sheet 22 that is flexible coupling form heating circuit; Servo motor power supply is to obtain corresponding direct current after rectifier 24 and wave filter 25, then drives the first AC servo motor 1 and the second AC servo motor 12 by 26 frequency conversions of three phase sine PWM inverter.0
With reference to Fig. 5, the sheet material of described composite connecting device connects flow process: before the heating of connected piece is referred to energising, first utilize electrode plate to pressurize to sheet material, set up contact and conductive path, keep resistance stabilization, recycling electrode plate is switched on to sheet material, regulates welding current based on pulsewidth modulation (PWM) method, control the rate of climb of electric current, control heating-up temperature, the plasticity by heating with increase sheet material, the resistance of deformation while reducing the connection of sheet material pressure; Stop energising when reaching when being connected the deformation temperature of sheet material or reaching the deformation temperature of a kind of sheet material wherein, otherwise continue heating; After power-off, the region after plate heating is moved to drift position and carry out punching press; The punching press of connected piece is referred to the region touching plate is heated from drift starts, until material is full of bed die completely, forms punching press round dot.
Operation principle of the present invention is:
When to being connected sheet material when heating, adopt contravariant resistance welding power source accurately to control the deformation temperature of heated sheet material, the first servomotor 1 drives the first leading screw 4 to rotate; The first leading screw 4 drives the first nut 5 along the first guide pillar 6 linear slide, drives the first electrode plate 8 moving linearlies, and then drives top electrode 9 moving linearlies.When top electrode 9, be connected while setting up good contact between material and bottom electrode 10, open inversion resistance welding power source, firmly connect copper bar 23, the second electrode plate 11, bottom electrode 10, be connected sheet material, top electrode 9, the first electrode plate 8, the copper sheet 22 that is flexible coupling form heating circuit; Produce medium frequency alternating current (f=600～2000Hz) through inverter inversion, again to welding resistance transformer feed, the low-voltage medium frequency alternating current of welding resistance transformer secondary output produces the very little direct current of pulsation for sheet material heating after fullwave rectification, in the time that heating-up temperature reaches the deformation temperature of a kind of material wherein, can stop switching on.Contravariant electric resistance welding adopts pulse duration modulation method to regulate welding current accurately to control heating-up temperature.
When being connected plate stamping, adopt the second servomotor 12 accurately to control the motion of the second leading screw 15, the second nut 16 being connected with the second leading screw 15 is made linear slide along guide rail 21, drive drift 18 to move linearly, the heated sheet material of punching press, force and be connected sheet material in the generation plastic deformation of tie point place, form punching press round dot, the bilayer or the multilayer that realize sheet material connect.
Claims (2)
1. the composite connecting device that directly drives pressing sheet material based on inversion electric resistance welding and AC servo, is characterized in that: comprise power supply and be arranged side by side be fixed on the heating arrangement to connected piece and the punching mechanism in frame 3;
Described heating arrangement comprises the first servomotor (1), and the output shaft of the first servomotor (1) is directly connected with the first leading screw (4), and it is upper that the first nut (5) is connected to the first leading screw (4), and the first nut sleeve (7) and the first nut (5) are fixing; It is upper that the first guide pillar (6) is connected to the first flange (2), and the first nut (5) slides along the first guide pillar (6), and the first servomotor (1) is fixed in frame (3) through the first flange (2); It is upper that the first electrode plate (8) is connected to the first nut sleeve (7), and top electrode (9) is connected to the front end of the first electrode plate (8); It is upper that the second electrode plate (11) is fixed on frame (3), and bottom electrode (10) is connected to the front end of the second electrode plate (11); Top electrode (9) and bottom electrode (10) are coaxial; It is upper that hard link copper bar (23) one end is fixed on frame (3), and the other end is connected with the second electrode plate (11); Being flexible coupling, to be fixed on frame (3) upper in copper sheet (22) one end, and the other end is connected with the first electrode plate (8);
Described punching mechanism comprises the second servomotor (12), the output shaft of the second servomotor (12) is directly connected with the power shaft of decelerator (13), the output shaft of decelerator (13) is connected with the second leading screw (15), the second nut (16) is connected on the second leading screw (15), the second nut sleeve (17) is fixedly connected on the second nut (16), the second nut sleeve (17) one end is fixed on slide block (20), slide block (20) slides along guide rail (21), guide rail (21) is fixed in frame (3), drift (18) is connected in the second nut sleeve (17), bed die (19) is fixed in frame (3) through lower mold holder,
Described power supply is made up of inversion resistance welding power source and servo motor power supply, is divided into two-way from the three-phase alternating current of electrical network input after rectification and filtering, and a road is inversion resistance welding power source, and a road is servo motor power supply; Inversion resistance welding power source is powered to heating arrangement, and servo motor power supply is powered to servomotor.
2. the composite connecting device that directly drives pressing sheet material based on inversion electric resistance welding and AC servo according to claim 1, it is characterized in that: the sheet material of described composite connecting device connects flow process and is: before the heating of connected piece is referred to energising, first utilize electrode plate to pressurize to sheet material, set up contact and conductive path, keep resistance stabilization, recycling electrode plate is switched on to sheet material, regulate welding current based on pulsewidth modulation (PWM) method, control the rate of climb of electric current, control heating-up temperature, plasticity by heating with increase sheet material, resistance of deformation while reducing the connection of sheet material pressure, stop energising when reaching when being connected the deformation temperature of sheet material or reaching the deformation temperature of a kind of sheet material wherein, otherwise continue heating, after power-off, the region after plate heating is moved to drift position and carry out punching press, the punching press of connected piece is referred to the region touching plate is heated from drift starts, until material is full of bed die completely, forms punching press round dot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022264.7A CN103801813B (en) | 2014-01-17 | 2014-01-17 | The composite connecting device of pressing sheet material is directly driven based on inversion electric resistance welding and AC servo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022264.7A CN103801813B (en) | 2014-01-17 | 2014-01-17 | The composite connecting device of pressing sheet material is directly driven based on inversion electric resistance welding and AC servo |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103801813A true CN103801813A (en) | 2014-05-21 |
| CN103801813B CN103801813B (en) | 2015-08-26 |
Family
ID=50699456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410022264.7A Expired - Fee Related CN103801813B (en) | 2014-01-17 | 2014-01-17 | The composite connecting device of pressing sheet material is directly driven based on inversion electric resistance welding and AC servo |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103801813B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215501A (en) * | 2015-09-09 | 2016-01-06 | 盐城工学院 | A kind of method that Cu-Ag deposits furnace temperature controls |
| CN115625252A (en) * | 2022-12-21 | 2023-01-20 | 江苏恒洲智能科技有限公司 | Automatic stamping forming device for metal plate surface of electrical control cabinet |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4658502A (en) * | 1984-03-22 | 1987-04-21 | Eckold Gerd Juergen | Sheet metal joining apparatus |
| CN1222872A (en) * | 1997-04-05 | 1999-07-14 | 埃克奥尔德两合公司 | Diffusion welding process and device for joining sheet metal parts |
| CN101433935A (en) * | 2008-12-15 | 2009-05-20 | 芜湖华安汽配制造有限公司 | Device for riveting sheet metal |
| CN101716644A (en) * | 2008-10-08 | 2010-06-02 | 通用汽车环球科技运作公司 | Method for attaching magnesium panels using self-piercing rivet |
| CN102581149A (en) * | 2012-02-23 | 2012-07-18 | 西安交通大学 | Flying wheel energy storage type rivetless connection device of servo motor and connection method of connection device |
| CN102632629A (en) * | 2012-04-17 | 2012-08-15 | 西安交通大学 | Miniature table press of ball screw driven by AC servo direct drive motor |
| CN102672062A (en) * | 2012-05-25 | 2012-09-19 | 吉林大学 | Laser heating rivetless riveting device |
-
2014
- 2014-01-17 CN CN201410022264.7A patent/CN103801813B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4658502A (en) * | 1984-03-22 | 1987-04-21 | Eckold Gerd Juergen | Sheet metal joining apparatus |
| CN1222872A (en) * | 1997-04-05 | 1999-07-14 | 埃克奥尔德两合公司 | Diffusion welding process and device for joining sheet metal parts |
| CN101716644A (en) * | 2008-10-08 | 2010-06-02 | 通用汽车环球科技运作公司 | Method for attaching magnesium panels using self-piercing rivet |
| CN101433935A (en) * | 2008-12-15 | 2009-05-20 | 芜湖华安汽配制造有限公司 | Device for riveting sheet metal |
| CN102581149A (en) * | 2012-02-23 | 2012-07-18 | 西安交通大学 | Flying wheel energy storage type rivetless connection device of servo motor and connection method of connection device |
| CN102632629A (en) * | 2012-04-17 | 2012-08-15 | 西安交通大学 | Miniature table press of ball screw driven by AC servo direct drive motor |
| CN102672062A (en) * | 2012-05-25 | 2012-09-19 | 吉林大学 | Laser heating rivetless riveting device |
Non-Patent Citations (1)
| Title |
|---|
| 张振: "冲压铆接技术及应用", 《锻压技术》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215501A (en) * | 2015-09-09 | 2016-01-06 | 盐城工学院 | A kind of method that Cu-Ag deposits furnace temperature controls |
| CN105215501B (en) * | 2015-09-09 | 2017-07-11 | 盐城工学院 | A kind of method of Cu-Ag deposits furnace temperature control |
| CN115625252A (en) * | 2022-12-21 | 2023-01-20 | 江苏恒洲智能科技有限公司 | Automatic stamping forming device for metal plate surface of electrical control cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103801813B (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110732794A (en) | ultrasonic and electromagnetic pulse composite welding device and composite welding method | |
| KR101382319B1 (en) | Twin spot welding apparatus | |
| CN206326330U (en) | Full-automatic transformer radiating slice assembly line | |
| CN108406071A (en) | A kind of thin plate and ultra thin plate resistance spot welding connection method | |
| CN105014215A (en) | Double-surface welder for mobile pole plate of electrostatic precipitator | |
| CN106552991A (en) | A kind of full-automatic spot welding machine | |
| CN110280879A (en) | A kind of stoving rack bend pipe overlap resistance soldering equipment and its welding method | |
| CN103801813B (en) | The composite connecting device of pressing sheet material is directly driven based on inversion electric resistance welding and AC servo | |
| CN103008830A (en) | CMT (Cold Metal Transfer)-based light metal arc spot welding method and device thereof | |
| CN104384422A (en) | Self-piercing riveting device and method oriented to ultrahigh-strength steel and light metal | |
| US20110290766A1 (en) | System and method for flash-welding | |
| CN101934432A (en) | Coaxial composite welding method of laser spot welding and resistance spot welding | |
| CN104875022B (en) | Steel plastic compount bucket steel construction outer packing equipment production line and its production method | |
| CN111421221A (en) | Friction stir butt welding device and machining method thereof | |
| CN103692100A (en) | Transition-free welding device for anode guide rod and anode yoke and welding method | |
| CN204122920U (en) | Iron sheet edge fit welder | |
| CN205271125U (en) | Reinforcing bar flash butt welding machine | |
| CN102085594B (en) | Automatic netting four-taper-sleeve welding machine and automatic welding method thereof | |
| WO2015188975A1 (en) | Method for producing a hybrid blank and shaped sheet-metal part produced therefrom | |
| CN201136083Y (en) | Bipolar electro-slag welding machine without consumable nozzle | |
| CN201333588Y (en) | Chair frame seam-welding machine | |
| CN111229954A (en) | Method for induction rolling composite connection of steel and aluminum dissimilar metals of automobile body | |
| CN104613304B (en) | A kind of aluminum alloy guide rail and its welding method | |
| CN204524533U (en) | A kind of mash welder special manipulator | |
| CN209006931U (en) | Reduce the jig of welding deformation in welding process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20180117 |