Stator lamination for electric motor and generators

SINGLE SLOT NOTCHING

Single Notching is one of our main competencies. It's quite a good and economical choice for medium & large size Motor Lamination production.

At present, the outer diameter of the largest punching sheet we produce is as high as 1250mm, which is currently the largest width of silicon steel coil. In order to offset the tooth harmonics during the operation of the motor, the slots of the Stator Core or Rotor Core are often designed to be skewed, rotary notching is very suitable for the production of this type of motor lamination, which is quite useful for the designs of large size motors.    

WORKING PRINCIPLE

In the process of single notching, the tool only cuts one slot on the round sheet at one time, which means that the total number of cuts is equal to the number of slots on the lamination. All of our CNC single notching press have a high precision positioning system and indexer, which can control every action of the machine.

APPLICATION & COST

For a synchronous motor, the stator magnetic field and the rotor magnetic field are mutually independent to a certain extent; the stator armature winding of the motor is fed with alternating current, while the DC magnetic field of the rotor part is generated by the excitation winding of the rotor part passing direct current, and some are on the rotor.

Single notching is very suitable for low-to-medium volume production or prototype development, the tool cost of it is quite low. Its production speed is relatively slow, and the time to produce a lamination varies from a few seconds to tens of seconds. However, more than half of our CNC presses are equipped with automated production systems. These devices can greatly reduce production costs while ensuring production speed.