Set up a spiral staircase

3D Design Volume Model
1

Hello

We are a locksmith company, we make all types of parts (stairs, railings, furniture, gates, etc.). We are required to carry out the same type of work with different dimensions, which is why we want to set up (among other things) a spiral staircase.

For reasons of coherence between the drawing and the part, we do not work in assembly but only in a part. Despite several attempts, we do not manage to obtain a staircase that is parameterized.

The biggest problem encountered is to repeat the steps around the central shaft while maintaining a constant step height and angle between steps.

Does anyone have an idea, a way to achieve our goals?

 

2

Hello

Having worked in the locksmith's shop, and done a few stairs, certainly not too many helicals, I know that it is sometimes a bit complicated. Especially when it's tailor-made in weird hoppers...

Can you tell us more about your design method? Especially for this distribution of markets...

How did you build the thing?
In my humble opinion, it is the 1st step that conditions the others, once placed, all the others have their nose parallel to that of the 1st, which generates the angle automatically.

For the height of the steps, how do you proceed in a "standard" case? (Height to cross /160mm and then we adjust as best we can to have a round count?)

See you soon

Hubert


 

3

Hello

  Apparently what you want to achieve is this:

To do this, you need to create the helix corresponding to the step of your staircase (make a sketch with a circle then:Insert --> Curve --> Helix)

To duplicate your walk, you must then use the curve-driven repetition on the volume body(s) defining your walk.

 

 

 

4

see this link it's old  and it's a straight staircase

but the principle is there

http://www.leguide3d.com/profiles/blogs/piloter-un-modele-3d-au-travers-d-excel

remains to be finalized with the right refs

It would also be nice to do the same

to show and then give the result to be able to share with everyone

thank you @+ ;-)

1 Like
5

Hello

Thank you for your answers.

Indeed Hubert, for the calculation of step heights I proceed in this way (=height to climb / desired step height). As for my design method, I start by tracing my shaft, height to be mounted, hopper, etc., I draw a sketch of my landing, then my last step (or even my penultimate step). And it is this march that I am going to repeat and make shine.

maldoror00 I used (among others) this method, namely the use of a propeller. It works well when I trace my staircase. But when I change my tread, for example, and consequently my walk, it doesn't work anymore. In this specific case I am no longer the necessary overlap between walking. I must be missing some steps or relationships between elements... But what?!?

In short, I can't determine the relationships that will control the whole.

GT22, I will share without any problem if I manage to do something that works, which is not the case yet but I am working on it. 

1 Like
6

Hello

   To shunt the problem of the repetition of "function" when they do not overlap it is better to go through the repetition of "volume body"

 

7

https://www.youtube.com/watch?v=zcNEJ6MfZd8

You'll find what you're looking for with this video. Parameterized spiral staircase.

1 Like
8

Hello

Thank you ronathan for the link. I climbed my staircase like on the video and it works well. The problem I encounter is that I have a significant overlap between steps. The steps would have to be covered by 40mm for example. And I can't seem to solve that. I think it's in the route of the walk that it happens... To be seen.

(attached is the principle)

If anyone has a tip I'm interested because I think I'm close to the goal.


escalier_helicoidal_parametre_test_2.sldprt
9

Hello

After having left aside the idea of a parameterized spiral staircase, I got back to it and I was able to solve, I think, the problem of the covering.

In any case , it seems to work.

All that remains is to do the same for the railing and accessories and it's good.

Thank you for your help.


escalier_helicoidal_parametre_test_3.sldprt
2 Likes
10

Thank you for sharing ;-)

1 Like
11

I published a bit quickly because when you change the outside diameter of the staircase ... problem...

I will share the final result once the one tested and approved.

1 Like