Spur and bevel gearing; a treatise on the principles, dimensions, calculation, design and strength of spur and bevel gearing, together with chapters on special tooth forms and methods of cutting gear teeth (1914)
New York, The Industrial press; [etc., etc.] · leaf 223
ig. 12: therefore D =P D IV cos a N P X cos a P X cos a or N = also D = N N cos a 208 BEVEL GEARING Formula (21) for checking the calculations will also be under- C stood from Fig. 12, where it will be seen that 0 = 2 ab X cos 5, and that ab = cos d Therefore, 0 = 2 C X cos 6 COS d Formulas (22) to… … Fig. 14. Diagram for Obtaining Pitch Cone Angle of Obtuse-angle Bevel Gearing Therefore, d e tan ap sin 7 tan 7 Sohing for tan ap, we have: tan a^ = e fsin 7 X tan 7) d tan 7 + ^ sin 7Di\dding both numerator and denominator by e tan 7, we have; sin 7 tan ap = . a , sm7 e tan 7 Since d = ^—z- and e=…
Gearing
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