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to draw a gear

to draw a gear

to draw a gear

1- How can i draw a gear in SWX. Can a simple revolve command create a gear, is there any extra step that must be done?
2- How can i find parts library on the net (free of charge)?
3- Can i find a tutorial about SWX (.DOC file or .PDF file or something else)?

RE: to draw a gear

It is better if you spend about $500 for Geartraxx.


It will do just about any gear out there. I used it for many years and I loved it. Just type in the information in the spaces provided and walla a gear made in SW right before your eyes.

But if you have a profile (Sketch) of a tooth I would just make a circular pattern of that feature.

Best Regards,

Scott Baugh, CSWP

RE: to draw a gear

Geartraxx is a very good program and it does a great job of making many different types of gears.  If you need that type of detail in your model that is.  For genreral representation though I would simply model the basic (major diameter) of the gear and its typical section. From a performance standpoint this is much faster to rebuild, especialy if you have a great deal of them in your assembly.  If you do however need to have the detail in your model, you can arrive at it in two ways:

1. Use a program such as geartraxx, or
2. Model them manually.

Basically to manually model a gear there are many diffrent methods depending on what type of gear it is, obviously spur gears are the easiest to model, and cosist of three basic features, a base revolve, a cut or boss-extrude to define one of the tooth profiles. and a circuilar pattern of the extrude feature.

Helical gears are a bit more tricky, but basically the same rules apply, Revolve the base feature, then define a helix to use a path for sweeping the tooth profile, and then a circular pattern of the sweep.

I guess the question is how much detail do you actually need on the gear?


RE: to draw a gear

I have to use Solidworks, i haven't got enough time to learn that prog.
APPENG; I don't need details on part, i need details only in section wiev of the part in draft. Do i have to draw a tooth profile and circ. pattern it? You know it will be great deal to draw an involute profile.. I will model a spur gear.

RE: to draw a gear

In that case yes,

You can do that in two ways.  You can model the total gear blank and cut the tooth out of it and pattern it, or you can model the minor (root) diameter and ADD the tooth profile and then also pattern it.

You can do this with helical gears too like this:


RE: to draw a gear

OH, on a side note, if you only need the details on the secion view, I would create a new configuration of the part and call it "simplified".  In that configuration I would suppress the tooth features, and on the drawing I would use the default config on those views that require it (it will help you from a performance standpoint)


RE: to draw a gear

How do you get the gears to mesh in a solidworks assembly?

RE: to draw a gear

Actually the best way to get them to mesh is to plan ahead when you build them nd take advantage of their indigenous reference planes and model the part with respect to those planes keeping in mind that your intent is to mate them together using that reference geometry.  It all boils down to those overused words ..... DESIGN INTENT!


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