For the dual robot work station of two weld seam arc weldingTechnical field
The present invention relates to Intelligent welding robot field, particularly a kind of dual robot work station for two weld seam arc welding.
Background technology
Weld symmetrical weld seam box section assembly at present, in actual production, use manual welding always, with the welding of skip welding discrete method, and welding can not weld two symmetrical weld seams simultaneously, and postwelding workpiece deformation is large, and complex procedures, welding efficiency is extremely low.The greatest problem that irregular weld seam in manual welding complex component exists is that stability of the welding quality is poor, and manual welding even weld is poor, causes security performance relatively unstable.Quality of weld joint depends critically upon duty when welding operation personnel level of skill and welding operation, and this type of part process-cycle is long, once there is the weldquality problem because human operational error causes, will have a strong impact on enterprise's manufacturing schedule.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of dual robot work station for two weld seam arc welding, a kind of double slit twin arc welding welding system is provided, this system configuration dual robot, and carry out Synchronization Control, the stability of the welding quality solving the irregular weld seam existence in manual welding symmetrical weld seam box section component is poor, the problems such as welding deformation is large, quality of weld joint is unstable, weldquality problem, and the part process-cycle is long.
For achieving the above object, the invention provides following technical scheme: a kind of dual robot work station for two weld seam arc welding, comprise a upset positioner, this upset positioner is the outside axle of welding robot, and upset positioner and welding robot can realize collaborative displacement; Welding tool setup adopts integral type to install with upset positioner, welding tool setup moves together with upset positioner, two laser trackers are arranged on the 6th armshaft of two welding robots respectively by fixed support, two welding robots and slide rail are located mobile, a upset positioner is set between two welding robots, two welding robot symmetries place upset positioner both sides, and arrange level with upset positioner; Two laser trackers are connected with two robot control cabinets by cable, arc welding power supply, the source of welding current are connected with robot control cabinet, robot control cabinet by cable with electrical control gear, and be placed on rack, robot control cabinet, robot control cabinet are connected with two welding robots by cable, and control two welding robots.
This course of work being used for the dual robot work station of two weld seam arc welding is as follows:
(1) PLC carries out systems axiol-ogy, and after all are normal, the order that transmission starts to weld is to welding robot, and welding robot starts arrival welding position, and the spot welding of symmetrical weld seam box section fixed, PLC is to the pneumatic positioning tool of welding tool setup; Welding robot sends the upset of signal control upset positioner and starts welding; Welding robot is simultaneously to symmetrical weld seam box section welding, laser tracker is according to the change of weld seam linearity or weld gap in welding process, Real-time Feedback signal is to robot control cabinet, robot control cabinet is according to weld seam actual state, real-time adjustment source of welding current parameter, source of welding current Butt welding gun angle or welding parameter control, and after having welded, welding robot and upset positioner automatically reset;
(2) serial communication is adopted between monitor screen and PLC, various parameters in robot welding system PLC are presented on monitor screen intuitively, operator operates whole system in work station outside, monitoring production process, ensure that the work station moment is in the efficient operation of optimization, ensure the safety of operator;
(3) robot control cabinet is the master controller controlling welding robot, utilize industrial bus and welding robot communication, in welding process, robot control cabinet is after source of welding current signal being detected, welding robot setting in motion, and by industrial bus communication to welding Energy control striking electric current, voltage, then the source of welding current enters the main welding stage;
(4) source of welding current controls welding gun and wire-feed motor, the source of welding current and the communication of welding robot by industrial bus, and welding current, voltage and wire feed rate all can adjust according to weld seam in time, the postwelding quality of guarantee welding work pieces;
(5) overturn the communication by industrial bus of positioner and robot control cabinet, while positioner be the 7th axle of robot, load is undertaken turning round and overturning by the program prelisted, makes the position of workpiece seam be in optimum state all the time, be namely in downhand position;
(6) weldment is accurately located and reliable grip by frock clamp, controlled by PLC by the clamping signal of hard wired communication, opening signal with PLC, after trade union college puts in place, PLC detects the signal that puts in place that frock clamp sends, and accurately locates clamping to workpiece;
(7) laser tracker passes through the variable quantity with position while welding in welding process before detection is in real time welded, and by guiding welding robot auto modification path to ensure that welding gun is walked along weld seam all the time exactly with the interface of welding robot, remain that welding position is in optimum state.
The beneficial effect of above technical scheme is adopted to be: this dual robot work station being used for two weld seam arc welding not only solves for be made up of irregular thin-wall construction and welding deformation amount needs the problem of the part accurately controlled, the remote-controlled operation etc. of welding workstation can also be realized by PLC terminal device, and add laser tracker and adjust angle of welding gun or welding parameter in real time, at utmost control welding quality and welding efficiency.
This double slit twin arc welding robot workstation, for the welding of complex structural member, not only can improve welding quality, shorten the welding processing cycle, and can avoid because manual operation is lostmake by mistakethe part rejection become, cost-saving, to alleviate workman labour intensity, improves operating environment.
Accompanying drawing explanation
Below in conjunction withaccompanying drawingthe specific embodiment of the present invention is described in further detail.
fig. 1that the present invention overlooks for the structure of the dual robot work station of two weld seam arc weldingfigure;
fig. 2that the present invention overlooks for the structure of the dual robot work station of two weld seam arc weldingfigure;
fig. 3the control principle of the present invention for the dual robot work station of two weld seam arc weldingfigure.
Wherein, 1-arc welding power supply, 2-robot control cabinet, 3-robot control cabinet, 4-source of welding current, 5-slide rail, 6-welding robot, 7-welding robot, 8-laser tracker, 9-laser tracker, 10-upset positioner, 11-welding tool setup.
Detailed description of the invention
Below in conjunction withaccompanying drawingdescribe the preferred embodiment of a kind of dual robot work station for two weld seam arc welding of the present invention in detail.
In conjunction withfig. 1,fig. 2withfig. 3show the detailed description of the invention of a kind of dual robot work station for two weld seam arc welding of the present invention: this is used for the dual robot work station of two weld seam arc welding, comprise a upset positioner 10, this upset positioner 10 is the outside axle of welding robot 6, and upset positioner 10 and welding robot 6 can realize collaborative displacement; Welding tool setup 11 adopts integral type to install with upset positioner 10, welding tool setup 11 moves together with upset positioner 10, laser tracker 8, laser tracker 9 are arranged on the 6th armshaft of welding robot 6, welding robot 7 respectively by fixed support, welding robot 6 and welding robot 7 and slide rail are located mobile, a upset positioner 10 is set between welding robot 6 and welding robot 7, welding robot 6 is placed with welding robot 7 symmetry and is overturn positioner 10 both sides, and arranges level with upset positioner 10; Laser tracker 8, laser tracker 9 are connected with robot control cabinet 2, robot control cabinet 3 by cable, arc welding power supply 1, the source of welding current 4 are connected with robot control cabinet 2, robot control cabinet 3 by cable with electrical control gear, and be placed on rack, robot control cabinet 2, robot control cabinet 3 are connected with welding robot 6, welding robot 7 by cable, and butt welding machine device people 6, welding robot 7 control.
This course of work being used for the dual robot work station of two weld seam arc welding is as follows:
(1) PLC carries out systems axiol-ogy, after all are normal, the order that transmission starts to weld is to welding robot 6 and welding robot 7, welding robot 6 and welding robot 7 start and arrive welding position, the spot welding of symmetrical weld seam box section fixed, PLC is to the pneumatic positioning tool of welding tool setup 11; Welding robot 6 and welding robot 7 send signal and control to overturn positioner 10 and overturn and start to weld; Welding robot 6 and welding robot 7 weld symmetrical weld seam box section simultaneously, laser tracker 8 is according to the change of weld seam linearity or weld gap in welding process, Real-time Feedback signal is to robot control cabinet 3, robot control cabinet 3 is according to weld seam actual state, the real-time adjustment source of welding current 4 parameter, the source of welding current 4 Butt welding gun angle or welding parameter control, and after having welded, welding robot 6, welding robot 7 and upset positioner 10 automatically reset;
(2) serial communication is adopted between monitor screen and PLC, various parameters in robot welding system PLC are presented on monitor screen intuitively, operator operates whole system in work station outside, monitoring production process, ensure that the work station moment is in the efficient operation of optimization, ensure the safety of operator;
(3) robot control cabinet 2 and robot control cabinet 3 are the master controller controlling welding robot 6 and welding robot 7, utilize industrial bus and welding robot 6 and welding robot 7 communication, in welding process, robot control cabinet 2 and robot control cabinet 3 are after source of welding current signal being detected, welding robot 6 and welding robot 7 setting in motion, and by industrial bus communication, striking electric current, voltage are controlled to the source of welding current 4, then the source of welding current 4 enters the main welding stage;
(4) source of welding current 4 controls welding gun and wire-feed motor, and the source of welding current 4 and welding robot 6 and welding robot 7 are by the communication of industrial bus, and welding current, voltage and wire feed rate all can adjust according to weld seam in time, ensure the postwelding quality of welding work pieces;
(5) communication by industrial bus of positioner 10 and robot control cabinet 2 and robot control cabinet 3 is overturn, positioner is the 7th axle of robot simultaneously, load is undertaken turning round and overturning by the program prelisted, makes the position of workpiece seam be in optimum state all the time, be namely in downhand position;
(6) weldment is accurately located and reliable grip by frock clamp, controlled by PLC by the clamping signal of hard wired communication, opening signal with PLC, after trade union college puts in place, PLC detects the signal that puts in place that frock clamp sends, and accurately locates clamping to workpiece;
(7) laser tracker 9 passes through the variable quantity with position while welding in welding process before detection is in real time welded, and by guiding welding robot 6 and welding robot 7 auto modification path to ensure that welding gun is walked along weld seam all the time exactly with the interface of welding robot 6 and welding robot 7, remain that welding position is in optimum state.
According tofig. 3this of display is used for the principle frame of the dual robot work station of two weld seam arc weldingfigurea specific embodiment, PLC and monitor screen realize the logic control of robot control cabinet 2 and robot control cabinet 3, frock clamp by industrial bus and hardwire, robot controller is connected with Ethernet with industrial bus with welding robot 7, laser tracker 8 respectively to the source of welding current 4, welding robot 6, and welding gun and wire-feed motor are controlled by the source of welding current 4.
Above is only the preferred embodiment of the present invention, and it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.