High efficiency stator lamination for motors and generaotrs

Single Notching

Single notching is quite a good and economical choice for medium & large size Motor Lamination production, at the same time, it's one of our core competitiveness.

At present, the maximum of the outer diameter of the largest punching sheet is 1250mm that we product, which is the largest width of silicon steel coil. In order to offset the tooth harmonics during the operation process 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 presses have a high precision positioning system and indexer, which can control every action of the machine and allows us to produce some very special laminations.

APPLICATION & COST

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

Although this kind of silicon steel sheet is very suitable for manufacturing motor cores, the manufacturing process is complicated and the cost is high.

In general, there aren't many types of slots on the stator or rotor laminations, as each slot needs a specific tool to stamp. Even so, the overall costs of the tools are very low, the production time of the mold just need only one or two days.