CLAMP APPARATUS

摘要

A clamp apparatus including two pairs of first and second clamp arms, which are supported rotatably with respect to a body and are disposed mutually in parallel. First and second cam members including respective cam surfaces are provided on ends of the first and second clamp arms. The first cam members are pressed by rollers upon lowering of a block body under a driving action of a first cylinder that makes up a drive unit. The first clamp arms are rotated to assume a clamped state. The second cam members are pressed by rollers upon lowering of a block body under a driving action of a second cylinder of the drive unit, whereby the second clamp arms are rotated to assume a clamped state.

主权项

1. A clamp apparatus in which, by rotation of clamp arms, a workpiece is clamped between gripping members of the clamp arms, comprising:
a body; a drive unit disposed on the body and including a displacement body that is displaced along an axial direction; at least two pairs of clamp arms supported rotatably with respect to the body, the clamp arms being arranged face-to-face with each other, wherein distances between the gripping members of the clamp arms when the workpiece is clamped differ in each of the pairs; and a driving force transmission mechanism including pressing members that press ends of the clamp arms, and which is connected to the drive unit and transmits to the clamp arms through the pressing members a driving force along an axial direction of the drive unit, thereby causing rotation of the clamp arms, wherein a plurality of the drive units are provided corresponding to a quantity of the clamp arms, the clamp arms being driven independently, respectively, by the plural drive units.