MULTI-FUNCTIONAL ELECTRIC STEPPER MOTOR ASSEMBLY

摘要

A stepper motor (9) having first and second metallic rotor assemblies (12A and 12B) being positioned within a hollow concentric passage (16) created in a permanent magnet (15) formed as a hollow cylindrical sleeve extending between the first and second rotor assemblies (12A and 12B). Each of the assemblies (12A and 12B) includes a cylinder (12) made of a plurality of circular laminations (10, 11) with striations on an inner perimeter thereon to form rotor cup teeth (13) wherein a first part of the laminations (11) having a larger diameter forms a flange (23) and a second part of the laminations (10) having a diameter smaller than the first part forms the stem (25). The motor (9) may be field converted from rotary motor to a linear motor and the through-hole (16) allows transport of hardware and electronic elements to the motor (9).