| 摘要 |
A chuck assembly for a light alloy wheel is used with a lathe for machining a workpiece, and includes: a chuck body fixed to be coaxial with a lathe spindle; a flexible power chuck including radially extending first second cylinder chambers located on first and second sectional surfaces, respectively, of the chuck body perpendicular to a chuck body axis along outer peripheries of the first and second sectional surfaces, respectively, and pistons received in the first and second cylinder chambers, the pistons being moveable by fluid pressure to grip the inner surface of the rim member in a compensating manner; and a retracting chuck to grip and center the hub mounting portion, and then pull the disk portion to press against a reference surface of the chuck body, whereby the lathe can machine an entire radially outer surface of the rim member. |
