| 摘要 |
1,210,915. Lathes. ALFRED HERBERT Ltd. 7 Nov., 1967 [11 Nov., 1966], No. 50661/66. Heading B3T. A lathe comprises a tool mount arrangement 39, Fig. 8, on which a tool holder 62 is releasably secured. The arrangement includes a toothed ring 81 which coacts with a toothed ring 65 on the holder 62, so as to angularly locate the latter, and an hydraulic piston 83 having a dovetail key 86, which co-operates with a dovetail groove 68 in the tool holder, for drawing the rings 81, 65, into engagement. Balls 91 cooperate with recesses in sleeves 88 and 92, and provide for locking piston 83 in its retracted position. The tool holder is rotated by a drive shaft 99. The lathe is as disclosed in Specification 1,195,371. |
