Geometry of involute gears | what is an involute | module | pitch circle | simply explained

In this video, we look at the geometry of involute gears. We take a closer look at the various parameters such as module, standard reference pitch circle diameter, operating pitch circle diameter, circular pitch, meshing pitch, etc. The involute is created by rolling a straight line on a base circle. The resulting tooth shape leads to favorable meshing conditions when two gears engage.
00:00 Use of involute gears
00:27 Constructing an involute (unwinding a thread)
01:25 Constructing an involute (rolling a straight line)
02:05 Radius of curvature
03:37 Nomenclature
05:08 Standard reference pitch circle
06:09 Tooth size: the module
07:17 Gear size: the standard reference pitch diameter
08:13 Circular pitch
09:06 Diametral pitch
10:15 Circular tooth thickness & tooth space width
10:55 Tip circle diameter & tooth root diameter
11:31 Standard center distance
12:32 Operating & reference pitch circle (difference)
14:02 Tooth shape: the pressure angle
15:23 Geometric similarity of involutes
17:22 Tooth shape: standard pressure angle
19:12 Gear cutting by hobbing
20:42 Base pitch (meshing pitch)

[@5eurosenelsuelo]

The ammount of interesting videos in this channel is amazing. I'm glad I found you.

[@Kralasaurusx]

Good lord, the level of care and detail that went into this video. So incredibly comprehensive and useful. Well done

[@tec-science]

Thank you for the appreciation, indeed a lot of work. 🙏🏽

[@av5186]

Your videos are so interesting and easy to imagine. Thank you very much!

[@gowthammurali1224]

Great pictorial representation..Salute for your effort...Thank you!

[@tec-science]

Thank you for the appreciation 🙏🏽

[@gowthammurali1224]

Glad to have such great video...Salute for the effort you made. one small confusion may be am wrong ...at video 11:06 You mention da = do+2ha ...how come da=do+ha which means da=m(z+1) not m(z+2)

[@tec-science]

Thank you. The formula should be correct because you need 2 times the tooth head plus the diameter of the reference circle.