Notes on technical sketching and free hand lettering for engineering students (1912)
Smith, Alton Lincoln, 1867- [from old catalog] · Worcester, Mass., The author · leaf 59
plane of the end of the cylinder. The tooth angle as specified in Fig. 18is more convenient for the workman, as it is the amount necessary to set over thehead of the milling machine for cutting the teeth. 147. It remains to determine the number of teeth for which the cutteris selected. It will not… … It can be proved easily by geometry, that Yp =The student should verify the results given in Fig. 18. ^^ and Y. Sin^^ Cos^e O£i^£L0P£O Pitch Surfaccs Fig. 19 148. The pitch diameter is always given on a gear although it may beof no use to the machinist. It is necessary, however, in determining the…
Mechanical drawing · Lettering
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