Analysis of the Performance of and AMB Spindle in Creep Feed Grinding

An Active Magnetic Bearing (AMB) electrospindle has been used in the process of creep feed grinding. This process requires high speed, power and accuracy. The AMB spindle complies with these requirements and brings additional advantages coming from the signal processing characteristics and rotor position control. The operation experience extends over 8 years and 12 spindles. This opened the door to other CBN grinding applications and motor technology development.