Maurice Tutor

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Category > HR Management Posted 12 Jan 2018 My Price 8.00

input shaft

Same as Problem 15.23, except that the pinion has 21 teeth and the gear has 62 teeth.

 

Problem 15.23

Figure P15.23 shows a two-stage gear reducer. Identical pairs of gears are used. (This enables input shaft a and output shaft c to be colinear, which facilitates machining of the housing.) Shaft b, called the countershaft, turns freely in bearings A and B, except for the gear-tooth forces.

(a) Determine the rpm of shafts b and c, the pitch diameters of the pinion and gear, and the circular pitch.

(b) Determine the torque carried by each of the shafts a, b, and c: (i) assuming 100% gear efficiency, and (ii) assuming 95% efficiency of each gear pair.

(c) For the 100% gear efficiency case, determine the radial loads applied to bearings A and B, and sketch the countershaft as a free body in equilibrium.

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Maurice Tutor
(5)
Status NEW Posted 12 Jan 2018 08:01 PM My Price 8.00

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