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热词
    • 2. 发明授权
    • Boring bar or the like
    • 镗杆等
    • US3961857A
    • 1976-06-08
    • US544318
    • 1975-01-27
    • Robert T. Koblesky
    • Robert T. Koblesky
    • B23B29/02B23B29/034
    • B23B29/03457B23B29/02Y10T279/14Y10T408/5586Y10T408/854Y10T82/29
    • A cutting tooth is carried on the outer end portion of a shaft which is eccentrically mounted within a power-rotated boring bar and which may be selectively turned within the bar to enable the tooth to be adjusted between an inactive retracted position and an active cutting position. By sliding the shaft in one direction, serrated rings mounted on the outer end portion of the shaft and within the outer end portion of the bar may be uncoupled to permit turning of the shaft. When the shaft is slid in the opposite direction, the rings are recoupled to establish a torsionally stiff rotational drive to the tooth by way of the outer end portions of the bar and the shaft. Turning of the shaft to adjust the tooth to its cutting position also effects outward adjustment of support pads for maintaining the outer end portion of the bar in a stable radial position during the boring operation.
    • 切割齿被承载在偏心地安装在动力旋转镗杆内的轴的外端部分上,并且可以在杆内选择性地转动,以使得齿能够在非活动缩回位置和主动切割位置之间调节 。 通过沿一个方向滑动轴,安装在轴的外端部分和杆的外端部内的锯齿形环可以不连接以允许轴的转动。 当轴沿相反方向滑动时,环被重新耦合以通过杆和轴的外端部分向齿形成扭转刚性的旋转驱动。 轴的转动以将牙齿调整到其切割位置也可以实现向外调节支撑垫,以在钻孔操作期间将杆的外端部分保持在稳定的径向位置。