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Tapered Cylinder
jeffrey_kontur
Member Posts: 2 ✭
I'm new to OnShape and to CAD drawing in general. Trying to make what I know is a simple shape but having a very hard time figuring out how. I've been watching video tutorials on YouTube and taking the in-built tutorials but still can't find quite what I'm looking for.
All I want is a tapered cylinder (or a truncated cone). 18mm at one end, 12mm at the other end, and 15mm tall. That's it. Nothing fancy. It doesn't have to be hollow or have any turns.
While I wouldn't object to someone just designing it for me, I'd much rather learn how to do it for myself.
Answers
draw the 18mm circle on a sketch. exit the sketch, then make another plane 15mm above that using 'plane' 3rd from the top right.. Draw the 12mm circle on a sketch in that new plane, and exit the sketch again. Then use loft (4th from left) and select the two circles. That should work
Hey Jeffrey. Here are three methods. The middle is What James noted. To the left is another method. To the right is another for if perhaps one of the cylinder's circle diameters was unknown or not important. - Scotty
For this I like the Revolve feature. (The grey shape in Scotty's example above).
Step 1: Select a plane and start a sketch.
Step 2: Sketch a line and change it to a "Construction line".
Step 3: Sketch the profile of your shape, roughly. It needs to be on this Construction line.
Step 4: Dimension the two diameters and height. Clicking the top right point, then the Construction line, then moving the mouse to the left of the Construction line creates a diameter dimension. (In the pic shown below).
Step 5: Use the Revolve feature. Select the Construction line as the "Revolve axis". Tick the "Full revolve" box for it to revolve 360 degrees.
Then if you need add more material to or take it away from this shape, you can either modify this first sketch and the cone will update, or you could repeat this process again.