I'm trying to make a pierce relation between sketch 9 and helix/spiral2. How do I do that? It doesn't show any options for relations when I select both of them.
Open a 3D sketch and put a point at the end of the helix and the use that point to position a "New" plane for your profile sketch and when you draw the small rectangle draw a centerline from the center of the top or bottom line that is perpendicular to the side lines and the line end would be in the center of the pipe, assuming that is where you have the point of origin. Then the sketch should follow the end of the helix so if you need to add or subtract revolutions the sketch plane and sketch should follow...
Correct me if I'm wrong but in my uses of Helix to create a thread I have found that adjusting the Start Angle allows me to start the Helix on a Plane, I seldom use the Pierce relation. Sometimes all I have to do is change the Start Angle to zero and I'm good. I see his Helix starting at 135 degrees. I doubt there's a Plane there. Like I said correct me if I'm wrong.
Not sure to follow your question: what points on both sketch you want to add relation?
I'm trying to make threads.
Attached is a 2017 file for an example of what I posted earlier
Sorry my friend i have a question, why didnt you draw the whole shape with Revolve command?
i cant accept this way to creat a part, is it an special thing?
He is needing to create a screw thread, not a groove. Revolve command cannot create a helical cut or helical protrusion. Nothing special, screw threads have been around for quite some time now (and by "quite some time", I mean several centuries). And they have, from the very beginning, been helical...that's what makes them a screw thread.
This should help bring you up to speed on them:
Screw thread - Wikipedia
No i meant your whole part, it is created by surface command, the rest is very nice
I have the same question (Why can't I make a pierce relation here?) but in a much more simple context.
I want to fix the point where the axis pierces the plane/sketch but SW2016 only offers a Coincident relation.
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