| 摘要 |
A chuck attachment formed from three chuck plates (1) and three carrier plates (2). Both plates (1, 2) are radially segmented. The cluck plates (1) can be secured to a conventional chuck (20) and each carrier plate (2) is also secured to the corresponding chuck plate (1). The outer surface of the carrier plates is turned to form an annular recess (11) and/or a central stub (14) which can respectively externally grip the rim of a bowl (12) or internally grip a bangle or other annular workpiece (16). The chuck attachment enables large diameter workpieces to be turned on much smaller chucks. |
