. American engineer . Wrench Used IVifh aPiece of Pipe. fye Softs. JBDouble AngJe P/afe. Piston I ng Head On Pod. or 42 in. vertical boring mill butli heads are used. The time re-quired is as follows. Set up the castine 25 min. Roughing out inside and out 90 Finish outside 30 Total 143 The cutting speed is 40 ft. per minute, the feed 3/32 in. and the cut from y^ in. to Yi in. deep. In operation No. 2—cutting off the rings with a gang tunl— the corners are rounded off with a hand tool after the ring is partly cut off. The tools in the gang tool are set ahead of eacli other so each r
. American engineer . Wrench Used IVifh aPiece of Pipe. fye Softs. JBDouble AngJe P/afe. Piston I ng Head On Pod. or 42 in. vertical boring mill butli heads are used. The time re-quired is as follows. Set up the castine 25 min. Roughing out inside and out 90 Finish outside 30 Total 143 The cutting speed is 40 ft. per minute, the feed 3/32 in. and the cut from y^ in. to Yi in. deep. In operation No. 2—cutting off the rings with a gang tunl— the corners are rounded off with a hand tool after the ring is partly cut off. The tools in the gang tool are set ahead of eacli other so each ring can be faced to exact thickness with a tool in the other head. The time required is as follows ; Grind and set gang tool 20 min. Cut off 12 rings H in. wide 90 Total : 110 The cutting speed is 35 ft. per minute and the feed is 1/64 in. spring and are cut out square across for the dowels. A piece\Y% in. thick is cut out of the rings with a handle chisel andsledge, requiring about half a minute a ring for a machinist A n □ oo □ rt 1 +n Boring Mill Tabe Piston Pocking Pings.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
