The dimension is just confusing, especially C-C section. This is what I have so far.
Your drawing is not clear enough. PDF format may be clear.
Compare with your
So... not all that glitters is gold
Thanks for the sample
The drawing is missing dimensions to modeling the handle. But Maha know
I didn't spot the difference at first. But looks close enough
I made two assumptions:
1) I assumed this should be an ellipse instead of circle.
2) I had my own guide curves.
If it is circle
Easy Peasy - Everything needed is in the original drawing.
Put all you can in 1st sketch. Add construction style spline guide curves.
Create 2 separate guide curve sketches using the construction guide curves.
Use construction curves to define a plane, then sketch an ellipse on this plane. Pierce 2 ellipse points to guide curves and dimension 17mm to the other 2 ellipse points.
Sweep using ellipse (starts as circle), inner curve as sweep path, outer curve as guide path.
Add a fillet and inside revolve cut to this tree and it's done.
M. B. wrote: Easy Peasy - Everything needed is in the original drawing.Put all you can in 1st sketch. Add construction style spline guide curves. Create 2 separate guide curve sketches using the construction guide curves.Use construction curves to define a plane, then sketch an ellipse on this plane. Pierce 2 ellipse points to guide curves and dimension 17mm to the other 2 ellipse points.Sweep using ellipse (starts as circle), inner curve as sweep path, outer curve as guide path. Add a fillet and inside revolve cut to this tree and it's done.
M. B. wrote:
If you assume that the guide curves are splines (and not an ellipse or arcs), if you assume that there are normals to the profile (circle), if you assume that the weight and angles of spline handle are standard, if you assume that the bottom profile is also a circle D 17 - then yes, all dimensions are in the original drawing, except for the radius of the handle and the cup.
For me to much for assume.
And like you see above, your assumptions are wrong
The only assumption I made was that I can’t flunk a class I’m not enrolled in.
Seriously though, I was only showing a simple technique to change a circle profile to 3 sequential ellipse profiles, then back to a circle profile while meeting all the dimensions provided on the drawing. Only the class instructor knows the intended guide curve shape. Delete the style splines I show and replace them with any other type of spline OR replace them with ellipses and the model will still meet all the dimensions on the drawing. And, as I mentioned, a single 3mm fillet feature at 2 intersections will complete the handle.
For mi inside curve is oval. You make spline. And result is other. Outside??? Who know? That is why I wrote that the drawing does not have all dimensions. Additional missing fillet radius. Documentation is intended to enable faithful reproduction of parts. If it leaves us any "freedom", it means it's incomplete. I have had many times that it took a lot of arrangements with the Designer (with a large "D") to change e.g. rounding from 5 mm to 4.9. And each, I emphasize "each" change required reconciliation, although sometimes the production technology introduces some randomness (e.g. negative thermoforming).
According to isometric view it is fillet, according to section A-A it is a part of the curve which is correct?
For me its fillet, but missing dimension introduces uncertainty. But I'm not autor question.
Thanks everyone for your replies. I knew there was something not right with the dimensions. I will continue to experiment with different dimension using the samples as a guide.
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