Hello
After building a spiral with the helix/spiral tool on solidworks, I would like to be able to find the different centers that allowed the software to trace this spiral. That is to say that the spiral helix tool just asks us to enter the inner diameter, the end diameter and the pitch; Following this I would like to know how many centers the spiral has and make them appear. Thank you in advance.
Kind regards
Hello
I don't understand your question: a propeller has only one center, or rather only one axis.
If you are looking for its axis, you can draw it by Insert/Reference Geometry/Axis and then select the sketch plane used for your spiral and the point corresponding to the center of the circle.
It's not a helix but a spiral and I drew it with the spiral option helix tool. On a spiral there are as many centers as there are different radii. I would like to know how much center my spiral is built with and find their position.
I don't have SW on hand, but put a screenshot of your spiral. I would have said that the spiral is made with a continuously variable radius. If it's not and matches what you're saying and you used this spiral to do a sweep for example, you should see edges on the faces every time the radius changes.
Already rebuild that, we'll see the possible crosses later.
I'm sending you two screenshots in the pdf. The spiral was used to make my sketch to be able to model the part. The part is modeled and developable. Now I'm in the drawing process and I'd like to draw my sketch so that I can draw it on sheet metal in the workshop.
Hello
As @Benoit says, a spriale is a parametric object drawn according to an equation that varies the radius continuously as a function of the angle. So there is only one center that is the starting point.
What you are trying to do would only be possible if the spiral were made up of a succession of arcs and, in that case, you would already see the centers in the sketch.
So to be able to trace the spiral in a workshop , the best way for the coast is to make a point cloud by specifying the coordinates?
Chamade, how can I do it on solidworks to determine the equation of my spiral?
Although the equation is quite simple (like radius = n x angle), I don't know of any tool to draw spirals directly. In addition, it would have to be specific each time.
So the easiest way is to start with a succession of points that you roughly connect by hand.
Sorry, our answers crossed. But you already have part of the answer.
I guess in fact you would like to find the associated parameters. If I'm not talking nonsense, you know a radius R1 at the beginning of your spiral corresponding to an angle A1 and a radius and angle R2 at A2 at the end. So like R1=nxA1 and R2=nxA2, you can say that n = (R2-R1)/(A2-A1). In your case n = (R2-R1)/360 if you take the vriation over 1 turn.
But I think it still won't help you to trace your spiral in the studio.
the simplest solution it seems to me
in the sight of your room
Your workpiece has x sections
so x plan
On these sections you can create a center (axis on either side of the said sections
These axes will cross your spiral propeller
It's up to you to create a point at each intersection and create it with the dimensions in x y z
@+
HS, it's a very beautiful piece that you have there!!
I've already had the opportunity to "come across" some and I wondered how we could draw it in parametric. It would be worth a tutorial!
To manually develop this kind of part you have to create the right part yourself, I had a tracing book that explained it more clearly but here is a link that shows the principle
http://choumac44.free.fr/
Then in tracing\simple solid\tapered elbow
For the principle of developing a conical elbow.