. American engineer . MILLING THRUST COLLAR DRAIN PLUGS FOR OILSection of the Saddle Shewing the Driving and Feeding IVIcchnniEm en the Spindle. its bearings in the casing, and clearance is provided between the saddle feed nut. //, the latter is rotated at the same speed and sleeve and saddle, avoiding any possiblity of transmitting vibra- in the same direction as the spindle as long as the feed driving lion to the work. The spindle is rotated by the long spline keys gear D remains stationary, which is the case when the feeds are fitted in the driving; sleeve nnd engaging the double splines in
. American engineer . MILLING THRUST COLLAR DRAIN PLUGS FOR OILSection of the Saddle Shewing the Driving and Feeding IVIcchnniEm en the Spindle. its bearings in the casing, and clearance is provided between the saddle feed nut. //, the latter is rotated at the same speed and sleeve and saddle, avoiding any possiblity of transmitting vibra- in the same direction as the spindle as long as the feed driving lion to the work. The spindle is rotated by the long spline keys gear D remains stationary, which is the case when the feeds are fitted in the driving; sleeve nnd engaging the double splines in disengaged. \\ hen the feed is applied and the driving gear D. Horizontal Boring. Drilling, Milling and Tapping IVIachine. 378 AMERICAN ENGINEER. Vol. 86, Xo. 7. rotates, the speed of the feed nut H will be different from thatof the spindle in either direction, and at a speed in proportionto the movement of D, thus giving a feed to the spindle. Thefeed nut comes in contact with the sides of the thread on thespindle only, and the end thrust in either direction is taken onball bearings of large diameter. End thrust when milling is takendirect on the saddle through bronze bearings, which do not comein use when boring. Positive planetary gearing is arranged forcontrolling the movement of the spindle from the hand wheel,which permits its adjuslTuent either at rest or when running All feeds before being applied to the different parts are trans-mitted through a friction clutch, and since all feeds are takenfrom the shaft that rotates the spindle, they are in direct ratioto the revolutions of the spindle. A feed reverse mechanism is provided at the sourc
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
