Stator lamination for large generator in wind power

SINGLE SLOT NOTCHING

When manually punching and punching, the production auxiliary work, such as loading, unloading, handling and sheet sorting, etc., the working time is far more than the punching time of the punching machine. This problem is more prominent when punching with double punching dies.

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.

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. Most of our CNC single notching presses have a high precision positioning system and indexer, which can control every action of the machine, so we can produce some very special laminations.

APPLICATION & COST

The tool cost of  the single notching is very low, which is very suitable for low-to-medium volume production or prototype development. Its production speed is relatively slow, and the time to produce a lamination varies from a few seconds to tens of seconds. Our CNC presses are equipped with automated production systems, these devices can greatly ensure production speed while reduce production costs.