MTEC$\mathrm{.}1020$ Engineering Design & Graphics

Gear Homework Problems

Problem $1$

In the figure below, shaft $1$ rotates at $5400$ rpm$.$ Find the ratio between shafts $1$ and $2$ and the ratio between shafts $1$ and $3.$ Then find the ratio between shafts $1$ and $4.$ What is the rotational speed of shaft $4?$ Gears B and C and gears D and E are locked together and rotate at the same speed.

Problem $2$

A $141/2$ degree full$-$depth involute spur gear has an outside diameter of $8\mathrm{.}5$ inches and a diametral pitch of $4.$ Find the circular pitch, addendum, dedendum, pitch$-$circle diameter, whole depth of a tooth, clearance, and the base circle diameter for this gear.