CN105364305A - Welding head for laser welding robot - Google Patents
Welding head for laser welding robot Download PDFInfo
- Publication number
- CN105364305A CN105364305A CN201510910932.4A CN201510910932A CN105364305A CN 105364305 A CN105364305 A CN 105364305A CN 201510910932 A CN201510910932 A CN 201510910932A CN 105364305 A CN105364305 A CN 105364305A
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- CN
- China
- Prior art keywords
- laser
- electromagnet
- laser nozzle
- annular magnet
- welding
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Classifications
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
- B23K26/0884—Devices involving movement of the laser head in at least one axial direction in at least two axial directions in at least in three axial directions, e.g. manipulators, robots
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to the field of plate welding instruments, and specifically discloses a welding head for a laser welding robot. The laser welding head comprises a laser nozzle and a circular swinging drum rotatably connected with an auxiliary rotating shaft; the laser nozzle is located within the circular swinging drum; four electromagnets evenly distributed and electrically connected with a control panel on the auxiliary rotating shaft are arranged on an inner wall of the circular swinging drum in the same circumference; the four electromagnets form an annular cavity; an annular magnet is mounted on a tail of the laser nozzle and located within the annular cavity; an elastic piece is arranged between the annular magnet and each electromagnet; an anti-collision column is arranged on and end face, close to the laser nozzle, of each electromagnet. The welding head for the laser welding robot has the characteristic of relatively low energy consumption of the robot relative to a traditional welding head when a tiny straight joint is welded.
Description
Technical field
The present invention relates to sheet material welding instrument field, be specifically related to a kind of plumb joint for laser welding robot.
Background technology
Welding is the process of a kind of necessity in modern mechanical manufacturing industry, is used widely in automobile making.Along with the progress of science and technology, the Welding Problems of clad steel sheet, light metal material proposes new challenge to Automobile Welding.Robot in Automobile Welding process and automatic laser solder technology make Automobile Welding looks greatly take on a new look.The develop rapidly of auto industry, makes laser welding technology open the New Times of Automobile Welding.
Different from spot-welding technology traditional at present, the molecule that laser weld can reach between two block plates combines, and the steel plate hardness after popular welding is exactly equivalent to a monoblock steel plate, thus bus body strength is promoted 30%, equally greatly promoting in conjunction with precision of vehicle body.Certainly, the actual use meaning of laser weld is also not only in this.In general, from the torsional motion test vehicle body that can convert thousands of times per minute to that jolts on ground when vehicle is advanced on road, if vehicle body is in conjunction with precision, insufficient strength, light then in car frequent, the noise of abnormal sound large, serious may cause being arranged on parts on vehicle as the damage of gearbox, front-rear axle or vehicle body fracture.The spot welding that laser weld is relatively traditional as can be seen here has greater significance.
At present, in order to better improve automobile metal plate work welding efficiency normally laser welding robot sheet metal component is welded.It is large that laser welding robot has radius of action, the feature that the welding free degree is large, is widely used.As shown in Figure 1, laser welding robot is mainly made up of base 10, main rotary electric machine 20, main rotary shaft 30, secondary rotary electric machine 40 and secondary turning cylinder 50 etc. usually, base 10 is connected by main rotary electric machine 20 with main rotary shaft 30, main rotary shaft 30 is connected by secondary rotary electric machine 40 with secondary turning cylinder 50, the free end of secondary turning cylinder 50 is provided with plumb joint 60, and plumb joint 60 is connected by micro servo motor with secondary turning cylinder 50.Because the plumb joint on existing laser welding robot is all rotate synthesis by a series of revolution, but some panel beatings to be carried out to small straight line welding very difficult, need robot to do a series of resultant motion, power consumption is comparatively large, and kinematic accuracy is lower.
Now need as can be seen here to design and a kind ofly reduce the plumb joint of laser welding robot to small straight line seam welding energy consumption.
Summary of the invention
The object of the present invention is to provide and a kind ofly reduce the plumb joint of laser welding robot to small straight line seam welding energy consumption.
For achieving the above object, base case of the present invention is: for the plumb joint of laser welding robot, the circular swing tube that described plumb joint comprises laser nozzle and is rotationally connected with secondary turning cylinder, described laser nozzle is positioned at circular swing tube, the electromagnet that being circumferentially provided with of described circular swing tube inwall four of being electrically connected with the control panel on secondary turning cylinder are uniform, four electromagnet form annular chambers; The afterbody of described laser nozzle is provided with annular magnet, and annular magnet is positioned at annular chamber; Be provided with elastic component between described annular magnet and electromagnet, the end face near laser nozzle on described electromagnet is provided with bumping post.
Operation principle and the advantage of this programme are: during for small straight line seam welding, and first start the machine people, and plumb joint is positioned at above weld seam.Then the electrical current by regulating the control panel be positioned on secondary turning cylinder to control coil on four electromagnet, and then reach the object of adjustment four electromagnet magnetic force.When the magnetic force that annular magnet is subject to is uneven, annular magnet can move thereupon, and then reaches the object of laser nozzle movement.In the process of annular magnet movement, elastic component plays action weaken to annular magnet on the one hand, avoids the obstruction of air-flow to laser nozzle in welding surroundings to cause laser nozzle to shake, affects welding quality; On the other hand, when the moment of electromagnet energising, now annular magnet can produce magnetic field instantaneously, and annular magnet can be subject to the moment impact of magnetic force, and elastic component can overcome the impact that moment impact causes laser nozzle preferably.In addition, bumping post can avoid operating personnel to cause laser nozzle to strike on circular swing tube because of maloperation, affects the service life of laser nozzle.
The ingenious annular magnet that utilizes of this programme is in the magnetic field of four electromagnet formation, and when the field is changing, laser nozzle moves with annular magnet.During for small straight line seam welding, the magnetic force size of corresponding just right electromagnet only need be regulated can to realize laser nozzle rectilinear movement, not need robot to do complicated gyration synthesis, and then reach the object reducing energy consumption.In addition, the mobile accuracy due to laser nozzle mainly samples in the Current Control of control panel to electromagnet, and reduce the impact of corresponding part's machining errors on laser nozzle mobile accuracy, it is high that break-in improves welding precision.
Preferred version two: the preferably preferred version of: described electromagnet is provided with some coilings electricity circle, this coiling electricity circle is electrically connected with control panel.Can magnetic field be formed after the energising of coiling electricity circle, by coiling electricity circle, small correction be carried out to the movement of annular magnet, and then improve the precision of laser nozzle movement.
Preferred version three: the preferably preferred version of two: afterbody and the annular magnet of described laser nozzle are fixed by expansion sleeve.Expansion sleeve is convenient to the fixing of laser nozzle and annular magnet, when laser nozzle need repairing change time, facilitate laser nozzle to dismantle from annular magnet.
Preferred version four: the preferably preferred version of three: described expansion sleeve is rubber swelling cover, described electromagnet is lower arcs of recesses near the end of laser nozzle, and described coiling electricity circle is matrix distribution at electromagnet near the end of laser nozzle.When four electromagnet are energized simultaneously, a toroidal magnetic field can be formed, more have the motion utilizing adjustment ring shape magnet.Coiling electricity circle, in matrix distribution, reduces the turbulent flow in magnetic field, advantageously does rectilinear motion in annular magnet.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art laser welding robot;
Fig. 2 is the structural representation of the present invention for the plumb joint embodiment of laser welding robot.
Detailed description of the invention
Below by detailed description of the invention, the present invention is further detailed explanation:
Reference numeral in Figure of description comprises: base 10, main rotary electric machine 20, main rotary shaft 30, secondary rotary electric machine 40, secondary turning cylinder 50, plumb joint 60, circular swing tube 61, electromagnet 62, control panel 63, stage clip 64, rubber swelling cover 65, coiling electricity circle 66, annular magnet 67, laser nozzle 68, bumping post 69.
Embodiment is substantially as shown in Figure 2: for the plumb joint of laser welding robot, comprise laser nozzle 68 and circular swing tube 61, laser nozzle 68 is positioned at circular swing tube 61, circular swing tube 61 inwall same is circumferentially provided with four uniform electromagnet 62 be electrically connected with the control panel 63 on secondary turning cylinder 50, four electromagnet 62 form annular chamber, the afterbody of laser nozzle 68 is provided with annular magnet 67, and annular magnet 67 is positioned at annular chamber.
Electromagnet 62 is lower arcs of recesses near the end of laser nozzle 68, electromagnet 62 is provided with bumping post 69, elastic component and the electricity of the coiling in matrix distribution circle 66 near the end of laser nozzle 68, this elastic component can be rubber strip and stage clip, and the present embodiment selects stage clip 64.Bumping post 69 on each electromagnet 62 is arranged symmetrically with about stage clip 64.This coiling electricity circle 66 is electrically connected with control panel 63.The afterbody of laser nozzle 68 and annular magnet 67 overlap 65 by rubber swelling to be fixed.
During for small straight line seam welding, first start the machine people, by the motion of active rotation motor and secondary rotary electric machine 40, plumb joint 60 is positioned at above weld seam.Then regulated the electrical current of coil on four electromagnet 62 by control panel 63, and then reach the magnetic force of adjustment four electromagnet 62.When the magnetic force that annular magnet 67 is subject to is uneven, annular magnet 67 can move thereupon, and then reaches the object of laser nozzle 68 movement.
Such as, when now needing laser nozzle 68 to move up, regulate laser nozzle 68 upper and lower to electromagnet 62, make the suction of electromagnet 62 pairs of annular magnets 67 comparatively large, now annular magnet 67 can move up.When the current strength passed through by coil on adjustment power-on and power-off magnet 62 and frequency, realize the magnetic force size of upper and lower electromagnet 62 pairs of annular magnets 67, and then reach the speed regulating annular magnet 67 movement.In the process of annular magnet 67 movement, stage clip 64 1 aspect, to annular magnet 67 action weakens, is avoided the obstruction of air-flow to laser nozzle 68 in welding surroundings to cause laser nozzle 68 to shake, is affected welding quality; On the other hand, when the moment of electromagnet energising, now annular magnet 67 can produce magnetic field instantaneously, and annular magnet 67 can be subject to the moment impact of magnetic force, and stage clip 64 can overcome the impact that moment impact causes laser nozzle 68 preferably.
The ingenious annular magnet 67 that utilizes of this programme is in the magnetic field of four electromagnet 62 formation, and when the field is changing, laser nozzle 68 moves with annular magnet 67.During for small straight line seam welding, only the magnetic force size of corresponding just right electromagnet 62 need be regulated can to realize laser nozzle 68 and move linearly, not need robot to do complicated gyration synthesis, and then reach the object reducing energy consumption.In addition, the mobile accuracy due to laser nozzle 68 mainly samples the Current Control in control panel 63 pairs of electromagnet 62, and reduce the impact of corresponding part's machining errors on laser nozzle 68 mobile accuracy, it is high that break-in improves welding precision.
Above-described is only embodiments of the invention, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from structure of the present invention, some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. record the content that may be used for explaining claim.
Claims (4)
1. for the plumb joint of laser welding robot, it is characterized in that, the circular swing tube comprising laser nozzle and be rotationally connected with secondary turning cylinder, described laser nozzle is positioned at circular swing tube, the electromagnet that being circumferentially provided with of described circular swing tube inwall four of being electrically connected with the control panel on secondary turning cylinder are uniform, four electromagnet form annular chambers; The afterbody of described laser nozzle is provided with annular magnet, and annular magnet is positioned at annular chamber; Be provided with elastic component between described annular magnet and electromagnet, the end face near laser nozzle on described electromagnet is provided with bumping post.
2. the plumb joint for laser welding robot according to claim 1, is characterized in that, described electromagnet is provided with some coilings electricity circle, and this coiling electricity circle is electrically connected with control panel.
3. the plumb joint for laser welding robot according to claim 2, is characterized in that, afterbody and the annular magnet of described laser nozzle are fixed by expansion sleeve.
4. the plumb joint for laser welding robot according to claim 3, it is characterized in that, described expansion sleeve is rubber swelling cover, and described electromagnet is lower arcs of recesses near the end of laser nozzle, and described coiling electricity circle is matrix distribution at electromagnet near the end of laser nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510910932.4A CN105364305B (en) | 2015-12-10 | 2015-12-10 | For the plumb joint of laser welding robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510910932.4A CN105364305B (en) | 2015-12-10 | 2015-12-10 | For the plumb joint of laser welding robot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105364305A true CN105364305A (en) | 2016-03-02 |
| CN105364305B CN105364305B (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510910932.4A Active CN105364305B (en) | 2015-12-10 | 2015-12-10 | For the plumb joint of laser welding robot |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000326162A (en) * | 1999-05-24 | 2000-11-28 | Sumitomo Heavy Ind Ltd | Multi-degree of freedom machining stage device |
| CN102307697A (en) * | 2009-03-13 | 2012-01-04 | 日产自动车株式会社 | Laser welding apparatus |
| CN202984915U (en) * | 2012-12-25 | 2013-06-12 | 广东潮宏基实业股份有限公司 | Laser seamless welding machine for precious metal products |
| JP2013200487A (en) * | 2012-03-26 | 2013-10-03 | Hitachi Via Mechanics Ltd | Galvano scanner and laser processing apparatus |
| CN204053246U (en) * | 2014-09-17 | 2014-12-31 | 沈阳工业大学 | Electromagnetic Drive permanent magnetism self-replaced type laser cutting head |
| CN204686265U (en) * | 2015-06-16 | 2015-10-07 | 苏州瑞森硬质合金有限公司 | A kind of high accuracy adjustable inclination angle metal works processing unit (plant) |
-
2015
- 2015-12-10 CN CN201510910932.4A patent/CN105364305B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000326162A (en) * | 1999-05-24 | 2000-11-28 | Sumitomo Heavy Ind Ltd | Multi-degree of freedom machining stage device |
| CN102307697A (en) * | 2009-03-13 | 2012-01-04 | 日产自动车株式会社 | Laser welding apparatus |
| JP2013200487A (en) * | 2012-03-26 | 2013-10-03 | Hitachi Via Mechanics Ltd | Galvano scanner and laser processing apparatus |
| CN202984915U (en) * | 2012-12-25 | 2013-06-12 | 广东潮宏基实业股份有限公司 | Laser seamless welding machine for precious metal products |
| CN204053246U (en) * | 2014-09-17 | 2014-12-31 | 沈阳工业大学 | Electromagnetic Drive permanent magnetism self-replaced type laser cutting head |
| CN204686265U (en) * | 2015-06-16 | 2015-10-07 | 苏州瑞森硬质合金有限公司 | A kind of high accuracy adjustable inclination angle metal works processing unit (plant) |
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| Publication number | Publication date |
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| CN105364305B (en) | 2017-06-13 |
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| CB02 | Change of applicant information |
Address after: 401120 Chongqing City, Yubei District Airport Industrial Park Langyue road standard factory building 1 unit Applicant after: Chongqing radium laser technology Co., Ltd. Address before: 401120 Chongqing City, Yubei District Airport Industrial Park Langyue road standard factory building 1 unit Applicant before: CHONGQING LEIBAO LASER INTELLIGENT ROBOT MANUFACTURING CO., LTD. |
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