초록 ▼

A permanent magnet rotor construction technique resulting in a rotor having excellent stiffness characteristics and being capable of higher speeds and longer lengths is disclosed. The rotor is constructed using nonfusion bonding techniques whereby an inner cylinder of magnetizable material is bonded

A permanent magnet rotor construction technique resulting in a rotor having excellent stiffness characteristics and being capable of higher speeds and longer lengths is disclosed. The rotor is constructed using nonfusion bonding techniques whereby an inner cylinder of magnetizable material is bonded inside a hollow outer cylinder of non-magnetizable material, with the resulting assembly having cylindrical end pieces also of non-magnetizable material bonded at each end. Pockets for receiving the rare earth permanent magents are then machined through the outer cylinder, and the magnets are mounted in the pockets in contact with the magnetizable material of the inner cylinder. Construction of the rotor is completed by installing a thin cylindrical shell over the permanent magnets in the areas of the rotor adjacent thereto.

대표청구항 ▼

A permanent magnet rotor, comprising: an inner cylinder of magnetizable material; a hollow outer cylinder of non-magnetizable material surrounding and bonded to said inner cylinder, thereby forming an assembly; a plurality of permanent magnets mounted in pockets machined into and through said outer

A permanent magnet rotor, comprising: an inner cylinder of magnetizable material; a hollow outer cylinder of non-magnetizable material surrounding and bonded to said inner cylinder, thereby forming an assembly; a plurality of permanent magnets mounted in pockets machined into and through said outer cylinder, said magnets being in contact with said inner cylinder; a first end piece of non-magnetizable material bonded to one end of said assembly; a second end piece of non-magnetizable material bonded to the other end of said assembly; and a sleeve of non-magnetizable material installed over said magnets and the portions of said outer cylinder therebetween.