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Re: Tangent to a spline
What do you mean by "I have a given spline, which is fixed and the tangent at the origin"? Do you want the spline to be tangent to a line that passes through the origin and is vertical?
If that is the case, see attached file.
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Re: Tangent to a spline
No,
I don't want that the line was vertical.
I just want that the line was tangent to the spline.
For that, I just have to declare a tangent relation between 2 entities.
And I get was is in my attached file.
And SW seems to have very odd behaviours in this case. Just one more bugged behaviour, added to an already impressive list.
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Re: Tangent to a spline
Thanks, I understand now. See attached file. I created the tangent relation first and merged the 2 endpoints later.
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Re: Tangent to a spline
You can also make the line colinear to the spline handle (select the diamond for that).
See attached.
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Re: Tangent to a spline
As near as I can tell, it's just a malfunction of sorts. When I erase the line and draw a new one, tangency works no problem.
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Re: Tangent to a spline
Sorry, but I don't understand how some sort could modify the definition of a tangent !!!!
If one spline and one line generates a problem of sorting, I am really curious about how SW manages assemblies with thousands of components !!!
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Re: Tangent to a spline
"sort" = "variety" or "type"
Sounds like English not your primary language. Duì bu qǐ.
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Re: Tangent to a spline
Pet, you seem to be having a lot of user based issues. Are you new to SolidWorks? Why are you fixing all the points on your spline? Use construction geometry, define you sketch with dimensions. Spline handles can be dimensioned with length and angle. Each point can be dimensioned also. Fixing a point is a great way to stop something from moving while you dimension the rest. Perhaps start asking about what you could be doing better rather than elluding to software shortfalls. I was going to tidy up your sketch, but it'd be best to start again, there is no inherent intent, again the use of construction geomtry would help.
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Re: Tangent to a spline
Hi,
I am fixing the whole spline, after a drawing from scratch (the freeform feature, with a spline).
I am fixing it to stop something from moving, as you say too.
Perhaps this drawing isn't in the accademic SW touch, but it's in the general academic purpose, about one curve and one tangent line.
It's really odd that, when I fix the spline, its tangent stays in blue, and if I declare another line as tangent, this behaviour happens.
Sorry, but there are some bugs somewhere in the code. And the word "bugs" is here in the plurial form.
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Re: Tangent to a spline
Pet, how long have you been using SolidWorks for?
Every problem has a solution.
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Re: Tangent to a spline
HI,
I am using SW for perhaps 3 years, but only some weeks per year, for my holidays.
And mecchanic isn't my field, btw .
Here, it's the Summer Edition which makes me come back here : I want to check some simulations, about the assemblies and composite ones, particularly, which seem very powerful, and aren't in the student version,
What makes me sometimes grumbling is about the math rigour of the program : if I can give my 2 cents, I also tried tflex, which is less comfortable, to draw from scratch with the mouse (to grab points and curves are less powerful), but the math of the basic constructions are much more pleasant : the program asks me about what I am expecting the program has to ask something, to go further.
If SW has such option about choices, hidden somewhere, I wish i knew it, really.
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Re: Tangent to a spline
Fixing a spline does not necessarily fix the end points. Make spline proportional and set end points may stabilize your sketch. I get best results from the spline shape on one sketch, and a second sketch on that plane that copies the spline as convert entity and has tangent features and appropriate trims. The tangent relation can get stuck off tangent. I delete the relation and redo it. One of the many really silly SW bugs that have been around since 2007.
