How to Draw a Spur Gear Design in Catia | Tutorial

Catia is software used to draw different complex-shaped parts by mechanical engineers. By making use of this software anyone having knowledge of Catia software can draw any part of the machine.
In this tutorial, we are going to see how to design spur gear. Unlike other parts like a shaft, sheet, etc., the spur gear is drawn by a different method.

Spur gear design in CATIA involves the use of some formulae, input parameters, drawing of simple tooth profile, and from that drawing of all other teeth of the spur gear.

How to design spur gear in catia
How to design spur gear in CATIA

We are providing a tutorial, just follow it and you will also be able to draw a spur gear in Catia.
Before starting note that you will need a module and the number of teeth on the gear. Using these basic parameters, you will get all other parameters required for drawing the spur gear.

Table of Contents

Spur Gear Design In Catia

Gear Calculations for 20-degree pressure angle.

1. Number of teeth, N=25 (In this case, our design refers to 25 number of teeth. So simply put the number of teeth according to your design)
2. Module, m=3.5 (In this case, our design refers to a 3.5 mm module. Simply put module according to your design)
3. Pitch circle radius, Rp=m*N/2
4. Clearance circle radius, Rb=0.94*Rp
5. Addendum circle radius, Ra=Rp+m
6. Dedendum circle radius, Rd=Rp-1.25*m
 Workbench used: Part design
Commands used :
Formula toolbar
Circular Pattern

4 thoughts on “How to Draw a Spur Gear Design in Catia | Tutorial”

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