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[Summary] ball mechanism with constraints??

nkaminakis
10-Marble

[Summary] ball mechanism with constraints??

Good morning Vassilis,

I did it somehow, with out auxiliary parts, using simple assembly
constraints / NO mechanism constraints.
I have created a revolved surface in the ground part, and then placed 2
assembly contraints:
1) align point to point
2) point to the revolved surface
I didn't placed any other constraint. This way i got the ball constraint as
I wanted.

BUT!!!!!!!!!!
I tried the following:

Used a general mechanism constraint: I placed the part using 1) align point
to point and 2) trying to make an "point on to surface" constraint. Pro/E
didn't allow me do that. Pro/E allows only planar surfaces to be used. Not
revolved surfaces. I don't know if this is a bug or a feature. Is there any
other way?

I use Pro/E WF5 M70 (Creo Elements/Pro 5 M70) 64bit , Windows XP64

you can check the attached zip file, containing the assembly.


On Mon, Feb 13, 2012 at 09:52, Anagnostopoulos, Vassilis <
-> wrote:

> Hi Nikos,
>
> you will need an extra auxiliary part and the following procedure to
> achieve this
>
> 1. Create an axis that passes through your first point on your base
> assembly.
>
> 2. Create an auxiliary part with two perpendicular axes.
>
> 3. Assemble the aux part with a pin joint (use here the first of the two
> axes) on your assembly.
>
> 4. On your part now with the given point, create an axis that passes
> through that point.
>
> 5. Assemble your part to the auxiliary part (on the second axis) using
> another pin joint. Define on this pin joint the required limits and you
> are done.
>
> hth
>
> Vassilis Anagnostopoulos
>
> SPIDER SA
> Industrial Area - Rodotopi
> 45500 - Ioannina
> Greece
>
This thread is inactive and closed by the PTC Community Management Team. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. You may also use "Start a topic" button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist.
-nk/.
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