Trouble Creating Large Gear

[Anonymous]

I am having a great deal of difficulty creating a large gear (5 m across).  I cannot get the spur gears to create on that big and I have been unsuccessful creating one in other programs and importing them into sketches.  They import into hundreds of small lines, usually, and are not corrected.  

My current attempt is attached.  It is a simple gear that is a sketch, but will not extrude.  I have no idea why not. Any ideas?

[Anonymous]

i am study engineering i no know to draw u can teach me thanks i use autocad 2015  

[JDMather]

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@Anonymous wrote:

..... i use autocad 2015  

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The AutoCAD forum is over here.

Do you also have Autodesk Inventor?

Which program do you want to use to model this gear?

[Anonymous]

This from question i no know how to start draw u can teach me step by step 

[JDMather]

You are not answering any of my questions.

Question 1.  Are you a student at Centennial College?

Question 2.  Are you trying to learn Inventor or are you trying to learn AutoCAD?

[graemev]

Two straight spur gears: one for when the base circle diameter exceeds the root diameter, one for when it does not.

Fiddle with the parameters to match your requirements.  Please note that you may need to tweak the "Root_Fillet_Scalar" value to get a valid root fillet.

I haven't tested the files to all values - specifically not other pressure angles - but they ought to be good for all 20°-based gears. (Or at least a good starting point.)

[Anonymous]

i am student 

[Anonymous]

your can teach me this how to draw thanks 

[graemev]

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@Anonymous wrote:

your can teach me this how to draw thanks 

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No, I cannot. I already have a full time job. Perhaps your instructor or teacher can do that.