Patent ID: 8049454
Filing Date: 2011-11-01
Classification: B23Q,Y10T

Abstract:
1. A rough and fine movement device comprising: a guide member including two parallel rails; a first mobile body and a second mobile body movable along the guide member; a connection member which connects the first mobile body and the second mobile body in a relatively movable manner; a first drive mechanism which roughly moves the first mobile body by a first stroke; a second drive mechanism which is arranged between the first mobile body and the second mobile body and which finely moves the second mobile body relative to the first mobile body by a second stroke, wherein the second drive mechanism includes an actuator arranged on one of the first mobile body and the second mobile body, with the actuator including a contactor having a first contact surface, the other one of the first mobile body and the second mobile body has a second contact surface which is contactable with the first contact surface of the contactor, and at least one of the first contact surface and the second contact surface is spherical; at least two first guided bodies arranged facing toward each other on the first mobile body and guided by the two rails; and at least two second guided bodies arranged facing toward each other on the second mobile body and guided by the two rails.