Deerfield and Roundabout Railway
LFLSRM Inc.
New Car Wheel Manufacturing
by J. G. Hook
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Fifth operation. Hole reaming with 3/4 inch diameter high speed steel "stub shank" reamer mounted on turret. Spindle speed 370 rpm., 73 sfpm., turret hand feed.
Fifth operation continued. The reaming operation produces the final hole diameter and maintains this diameter within close tolerances for each wheel produced.
Sixth operation. After the reamer is withdrawn the turret is indexed from the reamer to the twist drill, the lathe is stopped and the wheel is removed. Average first set up production rate 16 wheels per hour.
