RunRyder - Creating gears in SolidWorks 2004

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CAD - Engineering - Technical > Creating gears in SolidWorks 2004

Topher
Veteran
Location: Grosse Ile, Michigan

Hello,
Iv neen trying to figure out how to make some gears in this program for a transmission Idea I have had. But cant seem to find a way to create them solidworks 2004. Theres tools where you can set gear mesh and ratios but no easy way to make gears. Im kinda new to this program so can some one quikly explain to me how. Or is it just another program that cant handle the math like AutoCAD?

10-26-2004 Over year old.

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Siado
Senior Heliman
Location: Port Orchard, WA

There is an add-in called Geartrax that does an amazing job at just that. You specify ratios, etc and it will generate a script that sends solidworks into autopilot. It's pretty cool to just sit and watch it draw a gear from the script. I only wish I knew what it was doing, much less could do it that fast.

Other than that, google the crap out of it. I ran across a tutorial some months back for creating helical gears in solidworks. It was a university lecture I believe, but I did not bookmark it. If I run across it, I'll post the link.

Good Luck,
Jim

10-27-2004 Over year old.

Topher
Veteran
Location: Grosse Ile, Michigan

thanks for the info, I tried googling the crap out of it and I dindt really find a whole lot, other than that geartrax program. Where can I find that at and is it expensive?

10-27-2004 Over year old.

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Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

Many of those automatic gear programs, ie. Gear works, cost a little under $1000, but unless you use them a lot, really a waste of money.

I think you are better off just modeling the gears. Gear teeth are really just for show anyway - just model your gears illustrating pitch diameter and OD. Quite easier and the files are much, much, much, much smaller!

If you still want to show teeth, any machinery handbook should give you the info for gear tooth profile.

-Mike

10-27-2004 Over year old.

Siado
Senior Heliman
Location: Port Orchard, WA

Found it...

This deals only with helicals, but anything else would probably be easier. As was mentioned, Machinery's Handbook has an exhaustive amount of information on gearing. Worth the reading if you're really into it.

Good Luck!
Jim

10-28-2004 Over year old.

Siado
Senior Heliman
Location: Port Orchard, WA

hmm, i suppose posting the link would have helped there, eh?

Gear tutorial

Maybe that will be more useful...

Jim

10-29-2004 Over year old.

Topher
Veteran
Location: Grosse Ile, Michigan

thanks for the link. But that method only really works for naro gears tho. Doesnt really help my situation a whole lot. But I think im just going to referance the gears since Solid Works doesnt really have the power to do what I want. I wonder if I can get my hands on a student version of Catia.

10-31-2004 Over year old.

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Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

I think SolidWorks has more than enough power to do what you are asking of it; the question is, do you and your computer have the power required to accomplish the task?

SW is very demanding on a computer!

Good luck.

-Mike

11-01-2004 Over year old.

Topher
Veteran
Location: Grosse Ile, Michigan

well heres a short list of my computer specs:

XaserIII Lanfire Case w/Hardcano9 all smart fans
3000+ XP Proc OCed to 2.43 GHz
9800 Pro OCed to 412/720 MHz
Epox EP-8RDA3I Mobo
512MB 3200 Mushkin RAM
WD 80GB HDD w/8MB Cache

I even got a pick of it here: http://community.webshots.com/user/topher925

So ya my comp definatly has the power. I guess either I dont know how to do it or the function is not built in. Anyone know if there is a command to extrude something along a path such as a helix?

11-01-2004 Over year old.

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Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

...so it kinda sounds like you don't know the power of solidworks. No problem!

Yes, create the helix you need and then extrude your gear profile along that path, then pattern the feature about the gear axis. Done.

-Mike

11-01-2004 Over year old.

Topher
Veteran
Location: Grosse Ile, Michigan

ya but whats the command to extrude along that helix path? And also I want the path to be connicle, kind of like the shape of a parabula. Am I making any sence? I only know how to make the helix taper but no make it curve. I wish I could attach a photo of what im trying to do.

11-01-2004 Over year old.

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Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

This is my first time posting a picture, please be patient if it doesn't work.

-Mike

11-01-2004 Over year old.

Topher
Veteran
Location: Grosse Ile, Michigan

um didnt really work. Guess its gonna take a few days. But anyway whats a way that you can make a helical gear? I saw siados link but I need something that can make a helical cut gears thats tall and not narrow. Im trying to extrude/cut along a helix and im not seeing a way to do it.

11-01-2004 Over year old.

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Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

...you couldn't see the pic? When I click on it, the pic comes up. Am I doing something wrong or are you?

-mike

11-01-2004 Over year old.

Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

...maybe it takes a while for Mark Ryder to approve the pic prior to posting it....lets give it some time.

-mike

11-01-2004 Over year old.

Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

I think I may know what you are trying to say. Aside from the helical tooth path, you want a crown across the tooth width too? Maybe .001" per inch of tooth width.

You can use guide curves along with the helix to incorporate that crown. Or possibly use a seperate cut extrude for the crown.

-Mike

11-01-2004 Over year old.

Hockeytown
Veteran
Location: Pontiac, Mi. U.S.A.

Come on Guys............

It is called a Sweep.

Take a Sketch Profile that represents the Gear Tooth and Helix that represents the path and do an INSERT | CUT | SWEEP............

The 2D sketch is your profile, the Helix is your Path.

This all assumes that you have already Extruded the body of the gear and now all you want to do is Cut the teeth.

Do one Cut Sweep, then a Circular Pattern to make the rest of the teeth. You can use the Temporary Axis of the original Cylindrical Extrude as the Axis for the Pattern.

I hope this helps.

Thanks,

Darin[color=red]
Hockeytown[/color]

11-01-2004 Over year old.

Topher
Veteran
Location: Grosse Ile, Michigan

thanks for the info ill give it a shot.

11-01-2004 Over year old.

HOMEPAGE

Raptor30Heli
Senior Heliman
Location: Oak Creek, WI

Yes it's a sweep, but I think Topher is looking for a "crown" too! ...so he will need guide curves to define the amount of "crown" along the tooth width.

-mike

11-01-2004 Over year old.

Hockeytown
Veteran
Location: Pontiac, Mi. U.S.A.

OR.................

He you make 3 profiles, the original at the beginning, the one representing the crown in the middle, and another original profile at the end........Then just LOFT thru them.

This is actually a whole lot easier than you might think. Adding Planes to the Helix is just a couple button picks. You can 'derive' your original sketch and copy it to the last plane, then all you need to do is make the intermediate profile.

This would achieve a similar result to a Sweep with Guide Curves, but it could be 6 of 1, half dozen of the other.

My point was that Nobody even said the term 'Sweep'. Extrude alone will not do it.

Thanks,

Darin[color=red]
Hockeytown[/color]

11-01-2004 Over year old.

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CAD - Engineering - Technical > Creating gears in SolidWorks 2004

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