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This wikiHow will teach you how to make a 3D model of a gear using Onshape, allowing you ideally to 3D print the structure. This guide assumes you have used and are comfortable with Onshape.
Steps
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1Open Onshape and sign in. Go to your documents and click on Create . Then in the drop down menu pick Document... . Name your document and press OK .
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2Go to the front view. Start a sketch on the front face.Advertisement
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3Draw a rectangle starting somewhere on that middle vertical line.
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4Add relevant dimensions to your rectangle.
- Whatever you input for the vertical dimensions will be doubled when the gear is done. This can be changed to adjust for different applications.
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5Draw a line across the horizontal line from the front view coincidental to the origin.
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6Click this line and make it a construction line.
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7Find and click the revolve tool. Select the rectangle sketch as the face you want to revolve and select the construction line as the revolve axis.
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1Go to the right view of your document. Start a sketch on the right face of your wheel.
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2Draw a line starting at the origin and going vertically until past the end of the wheel.
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3Make the line into a construction line.
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4Draw a center point circle coincidental to the origin.
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5Set the dimension as the difference between the two circles.
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6Draw two lines coincidental to both circles near the construction line you drew earlier.
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7Set the dimensions for the points at the bottoms of the lines to the construction line.
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8Set the dimensions for the points at the tops of the lines to the construction line.
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9Select the region that you just worked on.
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10Select the Extrude tool. Remove that area from the wheel.
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11Select the Fillet tool. Apply it to the four lines in yellow above. The default radius is 5mm but you can use 2.5 mm as well.
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Tips
- This gear is fairly rudimentary and can be improved with an understanding of gear theory.Thanks
- To make other sized gears, you must use the same tooth dimensions but different rectangle heights and tooth numbers. For instance, to make an 8 tooth gear that meshes correctly with this gear the rectangle must be 18.75mm tall.Thanks
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