Patent ID: 6209212
Filing Date: 2001-04-03
Classification: H02K

Abstract:
A centering structure between a machine-side spindle and a motor shaft, the machine-side spindle having a housing and the motor shaft is connected to a motor, comprising:first and second mounting plates each having a through hole bored through the central portion thereof and provided individually with fitting portions adapted to mate with each other with the respective centers of the through holes thereof in alignment;wherein said first mounting plate and the motor being fixed together in a manner such that the center of the through hole of said first mounting plate and the center of the motor shaft are in alignment with each other;wherein said second mounting plate and the housing for the machine-side spindle being fixed together in a manner such that the center of the through hole of said second mounting plate and the center of the machine-side spindle are in alignment with each other; andwherein said first and second mounting plates being caused to mate with each other by said fitting portions so that the center of the machine-side spindle and the center of the motor shaft are in alignment with each other.