. American engineer . y the rack and pinionfeed. One of the illustrations shows a sectional view which per- July, 1912. AMERICAN ENGINEER. i77 mils the details of tliis construction to be understood. It willbe noticed that the spindle has its own independent bearings atthe extreme ends of the saddle, giving a very rigid support. Aspindle sleeve on which the driving gears are mounted also has the The spindle sleeve li has gear teeth cut in one endwhich nicsh with the three pinions /:, mounted on studs thatform part of the dilTercntial feed driving gear D. Through thedouble internal ge
. American engineer . y the rack and pinionfeed. One of the illustrations shows a sectional view which per- July, 1912. AMERICAN ENGINEER. i77 mils the details of tliis construction to be understood. It willbe noticed that the spindle has its own independent bearings atthe extreme ends of the saddle, giving a very rigid support. Aspindle sleeve on which the driving gears are mounted also has the The spindle sleeve li has gear teeth cut in one endwhich nicsh with the three pinions /:, mounted on studs thatform part of the dilTercntial feed driving gear D. Through thedouble internal gear /■ and three pinions (<. which mesh in the f7////////////jy////////y////////^^^^ CLAMPING NUT FOR POWER FEEDS FRICTION CLUTCH FOR FEEDS GEARS B SPINDLE SLEEVE C SPINDLE DRIVE KEVS D CIFFERENTIAL FEED DRIVE GEAR E Three driving pinions for PLANLTARV GEARF PLANlTARY gearG THREE PINIONS FOR SPINDLE FEED NUTH SPINDLE FEED NUTJ THRUST EtARING FOR SPINDLE AND NUTK FEED CHANCE GEARSL SADDLE ELEVATING SHAFT. 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
