The main effect of the KUKA welding robot servo motor is to convert the signal (control voltage or phase) into mechanical displacement, in the production and use of KUKA robot has the characteristics of high precision, good low-frequency characteristics, high additional speed, short speed response time, etc., therefore, the use of KUKA robot servo motor in CNC development, can meet the higher requirements of conflict wear and tear for test and real-time, and is widely used in many industrial production today, but in daily use, sometimes when the servo motor is energized, Why does the servo motor of the KUKA welding robot not rotate and is accompanied by a humming sound?
1. Causes of failure of KUKA robot servo motor
1. There is an open circuit in the rotor winding (one-phase disconnection) or one-phase power loss of the power supply;
2. The beginning and end of the winding lead wire are connected incorrectly or the winding is reversed;
3. The contact of the power circuit is loose and the touch resistance is large;
4. The motor is overloaded or the rotor is stuck;
5. The power supply voltage is too low;
6. The assembly of the small motor is too tight or the grease in the bearing is too hard;
7. The bearing is jammed.
Two. Fault sweeping
1. Identify the breakpoints and correct them;
2. Check the winding polarity; Determine whether the end of the winding is correct;
3. Tighten the loose wiring screws, use a multimeter to determine whether each joint is falsely connected, and correct it;
4. Load shedding or detecting and eliminating mechanical faults,
5. Check whether the face connection method of the rule is misconnected; Whether the voltage drop is too large because the power supply wire is too thin, and correct,
6. Reassemble to make it flexible; Replacement of qualified grease;
7. Correct the bearing.
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