. Railway mechanical engineer . 2. It is especially useful whenthe inside jaws have become worn and are built up by gasor electric welding to take up lateral play. An eccentricblade is shown in Fig, 2, set up on a millling machine to the , the Arbor A is turned to thestandard taper of the eccentric blade pin holes, namely, ^in. in 12 in. The eccentric blade is .set up and securely fas-tened to the milling machine table so that the arbor is leveland square with the table. The boring bar B, shown in de- •Th« firU article written on this subject by Mr. Phelps appeared
. Railway mechanical engineer . 2. It is especially useful whenthe inside jaws have become worn and are built up by gasor electric welding to take up lateral play. An eccentricblade is shown in Fig, 2, set up on a millling machine to the , the Arbor A is turned to thestandard taper of the eccentric blade pin holes, namely, ^in. in 12 in. The eccentric blade is .set up and securely fas-tened to the milling machine table so that the arbor is leveland square with the table. The boring bar B, shown in de- •Th« firU article written on this subject by Mr. Phelps appeared on page721 of the November Railway Mechanical Engineer and described fiveeiHcient jigs and fixtures in use at the San Bernardino shops. tail in Fig. 3, is provided with a cutter C, held in place byset screw D. After the blade has been securely clamped inthe correct position, the arbor is removed from the eccentricblade jaws. The boring bar is placed through one side ofthe pin hole and both inside faces are machined with the. Fig. 2—Eccentric Blade Set Up on Milling Machine double acting cutter fastened in the boring bar. In additionto getting a smooth, accurate job by this method, tliere is abig sawng in time over the former method of performingthe operation on a slotting machine. To care for eccentric
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
