How to create gear
In this solidworks tutorial, you will create gear.
1. Click New. 
Click Part, 
OK.
2. Click Front Plane and click on Sketch.
3. Click Circle 
and sketch a circle center at origin. Click Smart Dimension, 
click sketched circle and set it diameter to 1in.
4. You just completed your sketch, let’s build feature from it. Click Features>Extruded Boss/Base. 
Set D1 to 0.1in 
and 
. 
5. Click on front face and click Normal To.
6. Click on front face and click Sketch.
7. Click on Centerline 
and sketch vertical Centerline.
8. Click Line 
and sketch gear teeth profile.
9. Click Smart Dimension, dimension sketch as sketched below.
10. Change view to Isometric.
11. Click Feature>Extruded Boss/Base.
Set D1 to 0.1in, click Reverse Direction and .
12. Click on Extrude2 (gear teeth) 
and click Circular Pattern. 
Click on the cylinder face as axis of rotation (or click on View>Temporary Axes select the temporary axis as axis of rotation).
Set Instances to 22 and .
13. Click on Front face and select Normal To.
14. Click on front face and select Sketch.
15. Sketch a Circle and sketch a circle center at origin. Click Smart Dimension, dimension sketch as 0.9in circle.
16. Click Features>Extruded Cut 
and set D1 to 0.01in and .
17. Click on inner front face and select Sketch.
18. Click Circle and sketch a circle center at origin. Click Smart Dimension, dimension circle as 0.3in circle.
19. Click Features>Extruded Boss/Base set D1 to 0.1in and .
20. Click on center face and select Sketch.
21. Click Circle and sketch a circle center at origin. Click Smart Dimension, dimension circle as 0.15in circle.
22. Click Features>Extruded Cut and set Direction to Through All and .
23. Repeat Step 13 – 22 to back side face and you’re done!
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22 Responses to “How to create gear”
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February 25th, 2009 at 11:14 pm
This isn’t a tutorial for beginners…I found myself lost and confused multiple times. For instance how do you smart dimension angles? It fails to go into detail in many things including the sketch/features interface that Solidworks adopts. I found myself frustrated at the lack of detail on how to do many simple things like move an object.
February 26th, 2009 at 8:50 am
Hi Silver, is it to hard for you? Hey come back later, I will add tutorials how to use Smart Dimension tools.. Actually for adding angle dimension you just click on Smart Dimension, click on first line and click again to second line.. that it..
February 27th, 2009 at 1:22 pm
Hi, I have a problem with circular pattern. I can’t select any thing as an axis. I tried your gear tutorial but when I click on the cylindircal face of the center part, selects it as another object for rotation. I sketeched lines, 3D lines and … but I can’t select any as an axis. Please help me….
Thanks for your great web site.
March 1st, 2009 at 1:18 am
Hi Arif, there is another way to select as an axis, go to top menu View>Temporary Axes this will on your temporary axis, select it as your axis.
March 18th, 2009 at 6:19 pm
Hi this is a nice tutorial, one thing i would like to know is how did you come up with the dimensions to for the gear teeth.
March 19th, 2009 at 11:46 am
Hi Joilung,
Teeth dimension for this tutorial, I created myself but if you need real technical you can refer to gear standard such as British, ISO and AGMA. Few links for you..
http://www.agma.org
http://img85.imageshack.us/img85/3443/agmagearpb9.jpg
http://www.me.metu.edu.tr/courses/me308/standards/Gear_cutting/Gear_217.jpg
March 20th, 2009 at 12:06 am
Hi Zack,
Thanks for the quick response and the websites, it helped. i am trying to draw an involute gear, the profile of the teeth is the most time consuming and hardest to do even with all the information i am still at a lost. Instead of having the teeth on top, would reversing the teeth profile be the same?
March 26th, 2009 at 9:11 am
Hi, please when creating the circular pattern, I am finding it impossible to select a pattern axis, I have tried the temporary axes answer above but it still selects all of extrude 1 instead.
March 26th, 2009 at 9:39 am
oops alas I found it, it took me more than 20 minutes just to find the temporary axes, I think a bit more explanation is required, the tutorial says ‘click on the cylinder face as axis of rotation’, this did not work, I had to click ‘view’ ‘temporary axis’ and then selected the nearly invisible temp axis in the center as axis of rotation.
March 26th, 2009 at 12:59 pm
Thanks for the tutorial. I am really lost at the gear calculation. I am trying to make an 1 inch, 4 in and 6 inch in diameter gear for a project. I am really new to this and I have no idea how to calculate the common teeth size for them so they can work together. Any suggestion for the common teeth size and its distance from each other for a 1, 4 , 6 inch gear?
March 28th, 2009 at 4:17 am
Thanks for the tutorial. I am realy usedfully the site
Thanking You
March 29th, 2009 at 9:27 am
Hi Magnus, hey good suggestion.. I will update your note.. thanks….
May 20th, 2009 at 8:48 am
Thanks for this tutorial, Now i know how to make a gear. Helped me alot.
Great website and great tutorials for beginner
June 10th, 2009 at 10:33 am
This was a very easy tutorial. thanks.only one thing that got me confused was the angle with the smart tool.
June 10th, 2009 at 9:11 pm
Hi fayfathme, click smart dimension, click on first line and click again on second line and pull out the dimension.. that it…
June 12th, 2009 at 11:42 pm
Thanks for that, can you add a tutorial teaching to make helical one now ?
June 19th, 2009 at 10:40 pm
Hi Zack,
I found this tutorial very useful for beginners. Can ygive any other tutorials for involute profile gear design which will cover all topics in gear design like pressure angle, pich length of teeth.
Thanks
Naveen
July 8th, 2009 at 6:54 pm
Hey!
I’m modeling a track for a robot vehicle that I’m going to print out on a 3D printer. I’m about to construct a sprocket wheel (the wheel that drive the whole belttrack on a tank), but I can’t put together this tutorial with my formular for gears (2*pi*Radius / the amount of teeth on a gear). I’m dividing the result with 2 once more so I get the exact measure on the tooth and not the tooth and the space between the teeth together. But the space between the teeth doesn’t match the tooth. I must agree with Naveen and hope for a better tutorial for more precise modeling of gears.
September 25th, 2009 at 4:27 am
Involute curves are becoming the bain of my life, any help for an…’easy’ way to construct them in solid works would be massivley appreciated
March 31st, 2010 at 9:53 am
Thanks for your tutorial .I need a direction on how to program my drawing using VBA with the output in AutoCAD
March 31st, 2010 at 10:01 am
Thanks for your tutorial.
April 10th, 2010 at 10:35 pm
The way I have created an involute gear profile is a bit of a work around due to my AutoCAD background. What I do is use a spread sheet to generate x & y points for an involute curve using the equations
x = r (cos(t) + t sin(t)) & y = r (sin(t) - t cos(t))
r = base circle radius (just plug into furmula as constant)
t = angle (start at 0 and fill series at suitable increment, then later hide the column)
Save the 2 columns (x values and y values) to a .csv file and then copy that into a dwg file to create an involute using the polyline command.
Use that to create the gear profile and just copy that into solidworks to create the gear solid.
Long winded and a lot of stuffing around, but I’ve done it and it works.