| 摘要 |
Title: Three-jaw Chuck Convenient for Concentrically Positioning Center Hole of Axis Workpiece Abstract The invention a three-jaw chuck convenient for concentrically positioning a center hole of an axis workpiece, comprising three jaws mounted on a machine tool, the three jaws being uniformly distributed in a radial shape along a peripheral surface. Ends of the three jaws pointing at the circle center are provided with arc-shaped raised heads, and intermediate surfaces of the three arc-shaped raised heads intersect on a same straight line. This straight line coincides with the axis of the clamped axis workpiece. |
