| 摘要 |
634,966. Drilling; sockets. AKTIEBOLAGET ARBOGA MASKINER, and THELNING, C. L. Jan. 15, 1948, No. 1245. [Class 83 (iii)] A drilling machine spindle b rotatably mounted in an axially-movable feed sleeve g and driven by a stationary motor-driven shaft b<SP>1</SP>, the spindle being adapted to receive a tool or tool-holder d, is characterized in that the free end of the shaft b<SP>1</SP> is combined or associated with a stop c for the tool or tool-holder so that the latter is ejected when it strikes the stop. A stop ring i provided with one or more shoulders m is arranged between a flange l on the sleeve g and a fixed ring surface provided with notches n, the ring i being turned, when it is desired to eject the tool or tool-holder, until the shoulders m register with the notches n. In a modification, the stop loosely contacts the shaft and the notches are located in an axial plane at right angles to the plane containing the shoulders. In a further modification, the stop ring is replaced by a pivotable member. |
