Answer Happy

Posted: **Fri Jul 08, 2022 5:41 am**

: A Pair Of Helical Gears On Parallel Axes Are To Have Involute Teeth Of 20 Normal Pressure Angle And 3 Mm Normal Mod 1 (95.47 KiB) Viewed 29 times

A pair of helical gears, on parallel axes, are to have involute teeth, of 20° normal pressure angle, and 3 mm normal module. The wheels are to have 23 and 39 teeth, and to work with a centre distance of 149 mm. Calculate the pitch helix angle in degrees. Give your answer to 2dp.