. American engineer and railroad journal . setting the cutters after the work hasbeen placed on the machine. The arboris arranged to drive by a butterfly key(a slot across the face of the spindle).The outboard bearing for the arbor isbushed, the bushing being tapered on theoutside and split to compensate for wear,as it is arranged to fit over the arborbushings and be adjusted to support thearbor close to the work. The cross-rail has an inclined face, whichin addition to carrying the spindle close tothe uprights, overcomes to a very greatextent the tendency of the cutter to pullin when milling
. American engineer and railroad journal . setting the cutters after the work hasbeen placed on the machine. The arboris arranged to drive by a butterfly key(a slot across the face of the spindle).The outboard bearing for the arbor isbushed, the bushing being tapered on theoutside and split to compensate for wear,as it is arranged to fit over the arborbushings and be adjusted to support thearbor close to the work. The cross-rail has an inclined face, whichin addition to carrying the spindle close tothe uprights, overcomes to a very greatextent the tendency of the cutter to pullin when milling a piece which has a sur-face of widely varying widths. It alsoreduces the tendency to chatter to aminimum. The cross-rail has a bearing 25 and 38 ins. long on the main up-right, and 12 ins. wide and 31 ins. lcng onthe narrow upright. The face of the cross-rail is 16 ins. wide and the center of thespindle is 4 ins. below the face of therail in order to work around forged oil March, 1907. AMERICAN ENGINEER AND RAILROAD JOURNAL. ill. HEAVY NEWTON SLAB MILLING .MACHINE SHOWING APPLICATION OF MOTOR. cups on connecting rods, or to be able to sink in and mill key-ways on large diameter shafts having widely varying di-ameters, or other similar work. The cross-rail is counter-weighted and has hand adjustment and a power quick move-ment in both directions. A special advantage and an important one for such workas fluting connecting rods, where it is necessary to sink thecutter from 1% to 1% ins., is that the quick power movementis specially designed for this purpose. The cross-rail screwsare arranged to pull the rail down into the work instead ofpushing it, as is ordinarily done. This, in connection withprovision which is made to prevent the table from pulling for-ward when sinking in. or working backward, due to the pull-ing of the cutter, overcomes the breaking of cutters and ar-bors and damage to the cross-rail. The uprights are of extra heavy section and are 36 ins.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
