• This forum is the machine-generated translation of www.cad3d.it/forum1 - the Italian design community. Several terms are not translated correctly.

error "unassembled mechanism"

  • Thread starter Thread starter aerox
  • Start date Start date

aerox

Guest
hi, I was hoping today to finish my set by finally inserting the spring but... a problem arises that tilts the positioning of the components if I try to reposition the assembling with the handle.

in practice I have a tube to which are attached 6 radially jaws, and to the tube is connected a ralla that can rotate around the tube: Rall and jaws are joined by a springer shock absorber, moving with the handle the raddle first extends the shock absorber and then opens the jaws.

I initially tried to do "a branch" and then to do the radial series to duplicate the movement but so nothing works, then I tried the easiest way to insert them all at a time, they are not many components.

up to 2 shock absorbers assembled in any pos muovo la ralla the regeneration not from problems, if I insert the fourth shock absorber occasionally goes in error with the warning of unassembled mechanism and the pieces that go on their own outside the limits imposed in the couplings (pin and ball)

in particular I have the ralla in coupling pin that can rotate of a tot, then to it I have a sphere connected as free pin to rotate, then I have the block of the shock, which has a pin on the run of the stem, and two joints spherical to the ends that I accoppio in the axeme to the ball of first on the ralla side, and to another sphere that in turn is connected to the free hook always

It really seems to me incomprehensible that it works in certain positions and in certain not.. what can I do according to you? I tried to change the tolerance in tools-joint setting-> mechanism by putting 0.1 but maybe this setting is valid in "mechanism" environment and not in "standard"

Hi.
ps. can it be that it depends on the fact that the pieces are always those (*.prt and *.asm) and maybe creating copies the speech changes?
 
I came up with another doubt: I removed the shock absorbers except the first, moving the assembling with the handle I see that it allows to place the shock closed beyond the value of offset imposed, and then regenerates without giving me error... how is this possible?
 
after a lot of hours I realized why it didn't work, in practice the fact that the shock went beyond the compression stroke bottom made me put the attention on him (which was a subaxieme), I had set a course bond for the stem and a pin on the attack to the spherical joint for the rotation, the problem was just there, because setting a bond of "cylinder" I could do all and only two things :-)
Maybe she's an amateur but I hope she can help someone.
Hello!
 
Unfortunately I was illusive..say that the aid moving the parts works, but in a certain position easily goes into error of assembly, always acting with the handle you can bring it back in a valid state without errors...it is strange because it does not always...that iella
 
it is not easy to help you solve the problem only with the description. try to post the set, perhaps only with the main pieces, that we give an eye.

greetings
 

Forum statistics

Threads
44,997
Messages
339,767
Members
4
Latest member
ibt

Members online

No members online now.
ciao
Back
Top