Silicon Steel Sheet For Motor cores

SINGLE SLOT NOTCHING

With the increase of silicon content, the hardness and brittleness increase, which brings difficulties to rolling, blanking, shearing and machining. At present, the silicon content of silicon steel sheets generally does not exceed 4.5%. The higher the silicon content, the more difficult it is to roll and process.

The outer diameter of the largest punching sheet we produce is as high as 1250mm, which is the largest width of silicon steel coil  currently. If we want to offset the tooth harmonics during the operation of the motor, the slots of the stator or rotor cores are usually designed to be skewed, rotary notching is very helpful for the production of large-size motors.    

WORKING PRINCIPLE

We can produce some special laminations, as all of our CNC Single Notching press have a high precision positioning system and indexer, which can control every action of the machine. 

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. 

APPLICATION & COST

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 to two days.

Stator Lamination By 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.