. Railway mechanical engineer . i to J/2 in. and at the big end it runsup to about lyi in. for a short distance. The cutter isdriven at 22 revolutions per minute which gives a surfacespeed of 60 feet per minute. The rate of feed is 2 in. per. Fig. 9—Examples of Locomotive Work Done with Modern Milling Cutters lotive side rods and other large members of similar cutter is 22^-in. long over all; it measures lOj/- I. in diameter and has 12 rows of inserted teeth or cutterlugs staggered in alternate rows and numbering 174 plugs in II. These plugs are of Mushet .steel inserted in o
. Railway mechanical engineer . i to J/2 in. and at the big end it runsup to about lyi in. for a short distance. The cutter isdriven at 22 revolutions per minute which gives a surfacespeed of 60 feet per minute. The rate of feed is 2 in. per. Fig. 9—Examples of Locomotive Work Done with Modern Milling Cutters lotive side rods and other large members of similar cutter is 22^-in. long over all; it measures lOj/- I. in diameter and has 12 rows of inserted teeth or cutterlugs staggered in alternate rows and numbering 174 plugs in II. These plugs are of Mushet .steel inserted in one inchales bored radially in an axle steel center. Here they are■t in to a depth of 1 1/16 in. and the alternate rows areaggered to cover with one row the gajjs left between theeth of the next row. The sjjiral line along which the teeth■e located has a lead of in., the equivalent of an angleith the axis of approximately 12 deg. Th<- cutting faces of the [dug teeth are milled ^-in. ahcarl niinule. Tiic facing of the side of the rod is accomplishedwith the milling cutter running at 22 revolutions per minuteand with a feed of 1/. in. per minute. The depth of metalremoved in the one cut is y^ in. for each side of the forg
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
