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Modeling, Scripting and Animating Gears

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Date Added: 7th May 2013
Software used:

Select cog30 and cog10 and Parent [p] to gear01 (Fig.21).

1713_tid_fig21.png
Fig. 21

The first gear is complete!

Revision

Before you start creating the other gears, it is a good idea to revise the relationship between the cogs. Here are the four prototype cogs you created earlier (Fig.22).

1713_tid_fig22.png
Fig. 22

The image below contains three simple gear setups. Consider the following very carefully (Fig.23):

(a) cog40 is rotating four times slower than cog10
(a) cog10 is rotating four times faster than cog40
(b) cog10 is rotating three times faster than cog30
(b) cog30 is rotating three times slower than cog10
(c) cog20 is rotating two times faster than cog40
(c) cog40 is rotating two times slower than cog20

1713_tid_fig23=.jpg
Fig.23


Creating the Gear System

Following the method outlined previously, create the remaining four gears ([B] - [E]), and rename them "gear02" to "gear05". The aim is to rotate gear01 [A], which will cause the door [F] to move up and down.

Move [w] the gears into a suitable starting position, so that the cogs interlock with each other. You'll also need to individually rotate [e] cogs to achieve this. Do not rotate the spindle/parent objects (gear01 - gear05), only the cogs (Fig.24).

1713_tid_fig24.png
Fig. 24

Note: Take note that gear05 [E] only has one cog: cog30.

Creating the Door

I added the door to this tutorial because up to this point it is all pretty easy. So, the aim of the door is to complicate matters slightly and challenge you.

The reason the door is slightly complicated is because it needs teeth to interlock with cogs. The problem is you don't know the actual size of the teeth... yet.

Start by making a polygon cube (Polygons > Create Polygon Primitives > Cube)(Fig.25).

1713_tid_fig25.png
Fig. 25





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Readers Comments (Newest on Top)
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Riccardo on Tue, 02 July 2013 6:11pm
Thank you very much! Great tutorial!
avatar
SirFunk on Wed, 26 June 2013 11:15pm
Awesome, thank you man :)
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Kumar Jeetu on Tue, 07 May 2013 10:58am
nice tutorial
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