chain chain

[freexf]

hello to all and happy new year 2010!
I'm getting stuck with a chain mechanism.
I can't close it.
I remain this piece to which proe does not accept the slot follower (look at the image).

My calculations are theoretically correct, but in practice, proe says more.
the total length of my trajectory is 492. but the last shirt that is illustrated in the image does not hook me to the other part of the chain.
there is the last shirt must be attached to the initial mesh with a pin, or just define a follower slot by choosing the point illustrated in the image + whole trajectory.
so you understand better.

 

[folle76]

assembly is not my strong. I have seen the model, but it is difficult to redefine with a certain looseness the chain component because of the many constraints asola.
However, I think there is something about the accuracy of decimals that bothers me. I'd try to make the last bad knit item with flexible interasses. I would put it in the axieme with a lower interasse of a few tenths than the theoretical one of all the other elements badly and I would try to hook it to the fem with a pin bond or with something that unlocks more degrees of freedom than the asola.
Bye.

 

[freexf]

Thanks crazy.
from idea seems logical, but putting it into practice on proes, it does not work when launching the analysis...the movement is executed but not in continuity'...where there is the problem (the last jersey) returns to its initial position after a period and therefore does not carry out the whole translation on the trajectory.
I don't know how to fix it.

 

[maxopus]

I looked at the assist and it seems like something's wrong.
Regardless of the dimensional discourse, which somehow settles, the axieme is to be built by placing the individual shirts with a pin bond on the curve.
so you should build a curve that matches the path of the chain and place on this not underarms with different jerseys... but the individual jerseys and the limit use a series on curves.
to calculate the correct development I use a rather crafty method.
posiziono on the curve of the reference points and curved sections of the curve (discuss the word game) so that their absolute distance corresponds to the step of the single mesh.

 

[freexf]

to calculate the correct development I use a rather crafty method.
posiziono on the curve of the reference points and curved sections of the curve (discuss the word game) so that their absolute distance corresponds to the step of the single mesh.

that is the chain assembly method as suggested by ptc, but I do not go in my case.
it is impossible to make a series of components assembled with pins and asola.

 

[maxopus]

Excuse me freefx, who or what ptc manual suggested something like that?

 

[freexf]

I don't have the document right now. But if I remember well, a couple of years, I worked in a finger that was in maintenance, and ptc technicians sent us the above-mentioned document on the assembly of chain that starts from the creation of curve (trajectory) then creating a point on it, then making the set of the point through the curve.
and finally assemble a mesh referring to 2 points and then make the series of mesh by reference.

 

[DANI-3D]

If it can be useful to you, I draw them like this.

in the described parameter there are both description and length.

greetings

 

[freexf]

If it can be useful to you, I draw them like this.

in the described parameter there are both description and length.

greetings

That is a symbolic modeling to make it clear that it is a chain.
my case is to perform the movement of the mechanism.