A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 27
f of the face is a straight line at an angleof 75 degrees, five-sixths of a right angle, with the pitch line. Draw the outer half of the face of the tooth, one-quarter of its whole length,as a circular arc from a center on the pitch line and with a radius of2.10 inches divided bv the diametral… … INVOLUTE TEETH. INTERCHANGEABLE SET. Example.— A rack, and a pinion of twelve teeth, of two diametral pitch. Pinion. —From the tables we have, after dividing by 2, the face radius 1.35inches, flank radius .42 inches, and clearance .06 inches, The pitch diameteris 6 inches, and the addendum is .5…
Gearing
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