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 411
ear of 18 teeth, 1^ circularpitch and 8.59 in. pitch diameter. The distance from d to emeasured on the curved line is the circular pitch and is i\inches. The distance from d to e measured on a straight lineis the chordal pitch of the gear. The chordal pitch is alwaysless than the circular pitch.… … RIMS, ARMS AND HUBS OF SPUR GEARS 393 Example: > Find chordal pitch in the gear shown in Figure 8 wherethe gear has 18 teeth and li inch circular pitch. Solution: Pitch radius is 4.295 inches. Angle a = —- = 10 degrees. Sine of 10 deg. is found in the table on page 158 to be 0.17365. Chordal…
Mechanical engineering
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