| 摘要 |
1,160,092. Chucks. WICKMAN LANG Ltd., and D. M. BLACKBURN. 28 Oct., 1966 [12 Nov., 1965], No. 48229/65. Heading B3B. A chuck actuating mechanism in a lathe having a tubular work spindle 10 through which a draw tube 12 extends, comprises a piston and cylinder assembly 11 and 13, respectively mounted on the spindle 10 and draw tube 12 by combined radial and thrust bearings 16 and 17. The spindle and draw tube are freely rotatable in the bearings and by the admission of fluid to each side of the piston in turn the cylinder and draw tube are caused to reciprocate axially to effect a gripping and releasing action by the chuck, the piston and spindle remaining axially stationary. |
