unstable configurations

[AngeloB]

Hello everyone
use inventor 2011
with inventor, but also with the other modelers I tried, this happens to me:
example
- model a hydraulic cylinder
- I apply the constraints correctly, and I create a configuration where the only free bond is the cylinder race
- Load the cylinder into the axieme and the flexible
- I attach an angle bond to the hinge that must move the cylinder
- various the numerical value of the angular bond and the cylinder correctly follows the movement of the hinge
- I create two configurations of the top, one with open zipper and one with closed zipper
- save and close the aid
- I'll reopen the door, and usually everything works well
- at some point (I don't understand the cause) and after a number of program reboots, the axis loses stability. I find the cylinders with the rod aligned to the stem but on the opposite side. It is a coherent thing, from a geometric point of view, so I have no mistake and I am forced to manually reposition the cylinder, it is shocked.
Is it just me?

 

[Peppe]

unfortunately the corner bond.... is a little unstable!!! try to erase it and reposition it!

 

[AngeloB]

I didn't explain
the angular bond was very unstable, but using the "express reference vector" and paying attention to the references I can solve the problem.
If I study the cinematics of a hatch, I'm comfortable moving the hatch with a corner rather than changing the stroke of a cylinder.
the echo hatch to move it well, is the cylinder (which is drawn by the movement of the hatch) that behaves strangely. you reverse without notice the reciprocal position stelo-camicia

 

[stefanobruno]

Is it just me?

Don't worry :biggrin:, it happens to me too.

I, however, prefer to command the race of the cylinder and see where the piece ends and not the opposite, is much safer and stable.

Bye.

 

[Tarkus]

Don't worry :biggrin:, it happens to me too.

I, however, prefer to command the race of the cylinder and see where the piece ends and not the opposite, is much safer and stable.

Bye.

I'm not worried about the method, but a little bit of incaxxation. :36_1_28: