| 摘要 |
<p>A pneumatic collet assembly (20) has a housing (40), a piston (42), a collet (44), and ball bearings (48) . The piston (42) is disposed within the housing (40). A bore (92) within the piston (42) receives the collet (44). The collet (44) has a base (116) and fingers (120). The fingers (120) of the collet (44) define a center channel or bore (126) configured to receive a torsion bar (30). The central channel (126) extends along a longitudinal axis (38). The ball bearings (48) are disposed between the piston (42) and the fingers (120) of the collet (44). The piston (42) is configured to move between a first position along the longitudinal axis (38) and a second position along the longitudinal axis (38) in response to pressure changes within the housing (40). The piston (42) increases force against the ball bearings (48) to urge the fingers (120) of the collet (44) against the torsion bar (30) to clamp the torsion bar (30) .</p> |
