| 摘要 |
1,093,178. Tool holders. G. MULLER. Dec. 21, 1964 [Dec. 21, 1963], No. 51890/64. Heading B3T. A tool post and holder assembly comprises a tool post 1 and a split holder 2 which is located over the tool post. The split side of the holder is provided with a lug 35 which is straddled by lugs 36 and 37 which are bored and adapted to receive a shaft 5a with an eccentric 5 thereon. The shaft 5 is rotatable by a handle 11 the movement of which positively expands and contracts the holder radially by means of the eccentric 5 to free or lock the holder on the tool post. Slots 10 in the tool post co-operate with keying means 9 on the holder to locate the holder in selected positions prior to locking. Means are provided to ensure the elimination of backlash between the key 9 and slots 10 which means includes a spring 16. |
