Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 210
tline as carefully as possible by hand. Fig. 8 illustrates the laying out of a drum cam. To make thehorizontal measurements on this drawing, it is necessary to trans-late the positions given in the chart by degrees into inches of cir-cumference and, dividing the entire circumference of the chart… … FiG. 7.—Transferring the cam profile to the templet. The error introduced by the hand work is not important as, thecircular portions being exact, the movement given by the cam isexact, the slight error due to the hand work being in the rate of themovement only. Laying Out Drum Cams The laying out…
Machine design
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