I am needing to build a sketch that the curve needs to follow an exact pattern. I have attached a sketch that shows the basic curvature. (As it is freehand the shape is not exact however)
The pattern of curvature needs to follow a point placement like this. The initial point is at X=0 and Y=+.06. The second point on the curve would be X=+.5 and Y=-.06. The 3rd point on the curve would be X=1 and Y=.06. Etc...
I want to build a curve where I don't have to manually enter the dimensions as the size will extend for close to 50 inches.
My initial thought would be that Relations might be the way to go, but I have no experience with this and don't know if it would be capable of what I am looking to do.
Solved! Go to Solution.
Still looking this over online. I haven't pieced this together but I am now wondering whether this can be done as a relation at all within a sketch.
I am seeing examples how using a variable section sweep can influence different shapes but haven't seen a simple straight line oscillating curve that would result in the basic sweep shape of the curve on my initial post.
Rcrerar-2: The images you attached aren't showing. I will see if I can find the location you are suggesting but if there is an easy way to see these images it would be great.
This is excellent!
I just did find a video that showed roughly what I needed and proved this out.
I will check to see how your numbers differentiate.
This is a little fudgy so it may be that your numbers are closer in line than the formula I was using.
Just Checked the formula I used.
curve would be 50 units long and total height is 8 units crest to crest. This produces 2 cycles if you want more then each cycle is multiple of 360.
If it is not a sin curve then the maths needs working out.
rcrerar: Here is the formula that I went with. This worked great.
I will be able to use this pattern in the straight stretches, but unfortunately I can not use this for twisting around a large radii in our die. With that I will be developing a different technique involving a pattern and some fillets.
When you extrude this feature it looks a lot like a sun chip. Unfortunately I can't bend this feature at a specific large radii while maintaining the tilt I will need.
John: I did for a while consider the cosine function for doing a bend, but in the end I knew it would be a bear to maintain a specific bend radii as well being unable to carry through the proper inclination.
In the end I know that I can still use this for the straight stretches in my die. It gives a beautiful result.
"I will be able to use this pattern in the straight stretches, but unfortunately I can not use this for twisting around a large radii in our die. With that I will be developing a different technique involving a pattern and some fillets."
I am not sure what you mean exactly by your statement but would the attached image help?