| 摘要 |
626,793. Boring-heads. VLIEG, C. B. DE. May 30, 1947, No. 14420. Convention date, July 24, 1942. [Class 83 (iii)] The housing 16 for a cutting tool 22, which is received in a transverse opening 12 in the shank 11 of a boring-tool, is provided with adjusting means 26 engaging a threaded portion 17 at one end of the housing, and retaining means 31 disposed oppositely from the adjusting means for securing the housing in adjusted position. The transverse opening 12, which may be disposed at right-angles to the longitudinal axis of the bar 11, is enlarged at each end at 13 and 15. The housing 16 is limited to reciprocating sliding movement in the opening 12 by a pin 20 engaging in a slot 19 in the housing, and external screw threads on the housing bear against the walls of the opening. The adjusting means 26 is in the form of a calibrated disc disposed in the opening 15, and. has threaded engagement with the threaded portion of the housing 16. The retaining means 31 comprises a disc mounted in the opening 13 and engaged by the head 35 of a locking screw 36 which is in screw-threaded engagement with the housing 16. Adjustment is effected by releasing the locking screw 36 and rotating the disc 26 to the required adjusted position, after which the screw 36 is tightened to provide a rigid assembly within the opening 12. |
