| 摘要 |
1,167,252. Chucks. ERICKSON TOOL CO. 18 Sept., 1967 [27 Feb., 1967], No. 42405/67. Heading B3B. A quick change chuck comprises a holder 1, a tool adapter 8 having a flange 10 which is slotted at 9 so as to interfit with an axially projecting key 3 on the holder, a nut 5 threaded on the holder and having a lug 6 which may overlap the key 3 to allow insertion of the tool adapter and which on rotation of the nut bears on the flange 10 of the adapter to clamp it in the holder, the nut carrying a release member 12 which has a shoulder 11 adapted to bear on the rear face of the flange 10 to release the adapter from the holder when the nut is rotated in the opposite direction. The member 12 has a flat 17 adapted to engage one of the keys 3 to locate the lugs 6 over the keys for insertion of the adapter. The member 12 is positioned by an adjusting screw 24 and locked in the nut by a screw 20. The tool adapter may, as shown, have a bevel closing collet 14 and the holder may have a tapered shank 2 or alternatively a flange or other fitting for attachment to a machine tool. |
