Sewing machine motor belongs to the category of micro motor, sewing machine, has long bid farewell to the era of human drive, especially the efficiency of the industrial sewing machine industry, has been in rapid development, and as the core power components of sewing machine, sewing machine motor and motor control technology is also constantly developing. Over the years, the products have been updated for several generations, and their technology is constantly improving.
Clutch-type sewing machine motor. Clutch type sewing machine motor, mainly composed of asynchronous motor, clutch and brake pads. The motor has simple structure, reliable operation, short start and braking time, so it can start quickly and low input cost. But the work efficiency is not high, the maintenance workload of machinery and equipment is large, some parts are easy to wear.
For the abnormal vibration or noise of the motor, it can be analyzed from both mechanical and electromagnetic aspects to find the cause of the fault and help solve it.
I. Main causes of mechanical failure:
(1) Poor bearing lubrication, bearing wear, grinding or replacement of bearings.
(2) The fastening screws may be loose. Tighten the fixing screws.
(3) If there are sundries in the motor, clean up the sundries in the motor.
Main causes of electromagnetic failure:
(1) Motor overload operation.
(2) Three-phase current imbalance.
(3) Lack of phase.
(4) Short-circuit fault occurs in the spindle and the rotor winding.
(5) The rod of cage rotor causes broken rod.
