Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 423
what over size,so that from five-eighths to three-fourths of the depth of the toothmay be outside the pitch line. The form of teeth is usually involute, and the threadon a worm screw is constructed of the same shape as the teethin a rack. Fig. 14 shows the shape of tooth and the tablegives the… … P- - Circular pitch. N- 1 P 3.1416 M — P / = 4=- a — : P X 0.3183 d = : P X 0.3683 D = -a + d S = P X 0.5 3 = P X 0.31 C = P X 0.335 h = ^ + 4 k = P X 0.1 WORMS AND WORM GEARS. 405 TABLE No. 52.—Giving Proportions of Parts for Wormsand Worm Gears, Calculated According to Circular Pitch. (See Fig.…
Mechanical engineering
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