Circular or pipe welding without synchro motion

RobotStudio
1

Dear Sir
We have a robot in which we are trying to do a circular welding by keeping the robot stand still and moving the single axis positioner but I am not able to do that as when I give a wait time the welding doesn’t starts.
So please help me to resolve this issue.
Thanks & Regards

2

Have a look at ArcMoveExtJ

3

graemepaulin. Would this also work for a Non Integrated Non ABB motors Positioner?

4

Subhodeep - I have done something similar a while ago.

Have a look at the following code. This is a continuous weld around a shaft which can be offset by referring to a input from a signal from the positioner.

MODULE New

    PERS robtarget rtCurr:=[[7400.33,1899.46,369.25],[0.134605,-0.685643,0.699995,0.147588],[0,0,-1,0],[6608,9E+09,9E+09,9E+09,9E+09,9E+09]];

    PROC ContiniousWeldCirc()
        VAR num nTimeLapse{2}:=[1,1];

        ! Robot approach target position 
        MoveJ RelTool(rtCurr,0,0,600),v100,fine,tWG_Straight\WObj:=wobj0;

        ! Robot Approach 350mm in Z, then 50mm in Z and finally moves to starting position
        ShaftAppWeldRelTool Offs(rtCurr,0,0,(350)),RelTool(rtCurr,0,0,-(50)),Offs(rtCurr,3,0,0),v1000,fine,tWG_Straight\WObj:=wobj0;
        ! Waiting for Input from Positioner about where it's reference is. diTT_Pos_Sensor is the Reference input signal which is triggered by a proximity sensor on the external axis
        ShaftWaitdiTT_Pos_Sensor "WAIT diTT_Pos_Sensor HIGH",diTT_Pos_Sensor,1,"WAIT diTT_Pos_Sensor LOW",diTT_Pos_Sensor,0;
        ! After Input received, Activate Welding Signal on Powersource and Wait for signal to be High before continuing
        ShaftSetWaitdoWeld_Sensor "SET doWeld_1 HIGH",doWeld_1,1,"WAIT doWeld_1 HIGH",doWeld_1,1;
        ! Here the welding started and the robot is welding around a circular part while waiting for the next input from diTT_Pos_Sensor
        ShaftWaitdiTT_Pos_Sensor "WAIT diTT_Pos_Sensor HIGH",diTT_Pos_Sensor,1,"WAIT diTT_Pos_Sensor LOW",diTT_Pos_Sensor,0;
        ! After the input is received, the Robot waits for 2 seconds then offsets in X -2mm
        WaitTime nTimeLapse{1}+nTimeLapse{2};
        MoveL Offs(rtCurr,-2,0,0),v100,fine,tWG_Straight\WObj:=wobj0;
        ! Again waiting for Input from Positioner about where it's reference is.
        ShaftWaitdiTT_Pos_Sensor "WAIT diTT_Pos_Sensor HIGH",diTT_Pos_Sensor,1,"WAIT diTT_Pos_Sensor LOW",diTT_Pos_Sensor,0;
        ! After the input is received, the Robot waits again for 2 seconds and also pause for slight moment
        WaitTime nTimeLapse{1}+nTimeLapse{2};
        WaitTime 1.25;
        ! Here the Welding Signal is switched off and welding is off and pausing for 1 second
        Reset doWeld_1;
        WaitTime\InPos,1;

        ! Robot departs from position
        MoveL RelTool(rtCurr,0,0,600),v100,fine,tWG_Straight\WObj:=wobj0;

    ENDPROC
ENDMODULE
5

ok sir
thanks to all for your valuable feedback
I will check and let you know if was successful in doing the same or not.

6

Sir could you help me with few more queries.
Like we dont have world zone but is it possible to get a program running in background and letting us know the position of the robot.
Another query is how to send a AI value from Robot to PLC.

7

We are working on a Lincoln Welding Machine with ABB Robot 1520-ID where communication protocol is Device-Net, we have successfully established the communication but I am unable to get all the data in Robot Pendant.
For eg. - I cannot switch between different weld modes through Robot Pendant
It would be great if everyone can share their views on this.