| 摘要 |
PROBLEM TO BE SOLVED: To provide a precise chuck device which minimizes swinging.SOLUTION: A chuck device includes: a chuck member; a cylindrical retainer which is inserted into an inner periphery of a chuck hole of the chuck member so as to freely move relative to the chuck member; and multiple rolling elements which are rotatably held by the retainer and contact with an outer peripheral surface of a chuck object so as to freely roll. A taper surface part having an inner diameter which gradually becomes smaller in an axial direction is provided at the inner periphery of the chuck member. The chuck member includes a push-in mechanism which moves the retainer in a direction that the rolling elements dig in the taper surface part. |
