ME 562 Compression Spring Examples SP 13
Example 1
A helical coil compression spring is to be designed to exert a
static force of 100 lb when the spring is compressed 2.00
inches from its free length. The spring is to fit inside a
cylindrical hole 2.25 in
Flywheel Speed Fluctuation
A flywheel is a rotating mass used to stabilize (or smooth out)
variations in the speed of the shaft caused by torque
fluctuations. The primary task of a flywheel is to control,
within an acceptable band, the angular velocity an
Worm Gear Examples Sp 13
1. A proposed worm gearset is to have a single-start worm with a pitch diameter of 1.250 inches, a diametral pitch
of 10, and a normal pressure angle of 14 . The worm is to mesh with a worm gear having 40 teeth and a face
width of
Spur Gear Stress Analysis Examples SP 2013
Example 1: An 8-pitch 20 full-depth involute gearset with a face width of 1. 5 inches is being proposed to provide
a 3:1 speed reduction for a conveyor drive unit. The 18-tooth pinion is to be driven by a 20-hp,
Spur Gear Force Examples
1. The gears shown below have a diametral
pitch of 5 and a 25o pressure angle.
Determine and indicate on a free body
diagrams,
(a) The tangential and radial forces on
gears 2 and 3.
(b) The reactions on shaft C.
The driving gear 1
Roller Element Bearing Examples SP 13
1. A single-row radial ball bearing has a basic dynamic load rating of 11.4 kN for an L10 life of 1 million
revolutions. Calculate its L10 life if it operates with an applied radial load of 8.2 kN.
-Solution
L Cd
106
Helical Gear Example Problems SP 2013
1.
A pair of meshing helical gears has a normal pressure angle of 20 , a diametral pitch of 5, and a normal
circular pitch of 0.55 in. The driver has 18 teeth and the follower has 36 teeth. Determine the pressure
angl
Gear Train Examples 2013
1. In the compound gear train shown the distance between the
centers of gears 2 and 7 is 33.5 inches. The diametral pitch of
all gears is 4. The number of teeth on selected gears is
N2 72 T , N3 18 T , N4 80 T , N6 48 T , and N7 5
Bevel Gear Examples SP 13
1.
A pair of straight bevel gears, similar to those shown has
been incorporated into a right-angle speed reducer (shaft
centerlines intersect at 90). The straight bevel gears have a
diametral pitch of 8 and a 20 pressure angle. T
Belt Examples SP 2013
Example 1 A belt drive has an angle of wrap on the
small pulley of 150. The slack-side tension is Ts = 40
N, the motor pulley has a 100mm diameter, the
centrifugal force is negligible, and = 0.33. What is
the torque capacity of the p
Preliminary Bearing Selection for a Helical Gear Problems
Example 1 A 1-hp electric motor runs at 1800 rpm in the
clockwise direction, as viewed from the positive x axis. It is
supported by bearings at A and B. The thrust is taken out at
A. Keyed to the m