Stator Core Laminations For 4.5MW Generators

SINGLE SLOT NOTCHING

There are not too many types of slots on the stator or Rotor Lamination, and each slot needs a specific tool to stamp. Even so, the overall cost of the tool is very low. The production time of the mold is only one or two days.

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

Single notching is very suitable for low-to-medium volume production or prototype development, the tool cost of it is quite low. More than half of our CNC presses are equipped with automated production systems. These devices can greatly reduce production costs while ensuring production speed.

Considering that the eddy current loss in the iron core is proportional to the square of the thickness of the steel sheet, the thinner the thickness of the same type of silicon steel sheet, the smaller the core loss, but the core manufacturing time increases and the lamination coefficient decreases.