Thomas, Hugh Kerr · New York : McGraw-Hill Book Co. · leaf 54
cos a tan -^ (46) Whence z is easily found from Equation 20, Chapter V. This settles the direction and magnitude of the resultantline of pressure due to the torque of the motor. The worm and worm wheel are carried in ball bearings inwhich the stresses can be found in the following manner. Theend… … Fig. 15. It has already been shown that (p is neghgibly small. T cos a Therefore, 2)0 = sm a = T cot a (48) 290 is the tangential pressure on the worm = 2? ,••29 = ^ cot a: (49) Let/=2)$ = the separating force, 5.s = ro = the force actingradially on the journal bearings of the worm. S 7 \ P^ A IP 0…
Gearing, Worm
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