Hello to you.
I have the idea of drawing a cardex (machine that optimizes storage and makes it easier to take what is stored)
I schematized a little before going into detail, but already there I have a problem. Indeed, when I move the swings, I see that their space changes when they pass over the top or bottom of the trajectory.
I can't figure out why...
I put the file (assembly) for you so that you can test for yourself. Thank you for your advice.
a+
Lucbirus
Hello.
Your file is unusable in the state (missing all the parts).
the parts files are missing
so impossible to go + far
@+
Hello @Lucbirus I
My little comrades tell you implicitly to do
==> File==> take-home composition (or pack and Go for versions from 2017 onwards)
It is the system that allows all the parts that make it up to be included in the assembly. This creates a neutral relative path that will not depend on the file structure of your computer since we cannot access your HDD.
Kind regards
Hello.
Sorry for this error. Hoping it works now.
Thank you for your help on this file.
slts.
Lucbirus
We need all the files.
Look at this: http://help.solidworks.com/2019/french/solidworks/sldworks/c_pack_go_ovw_wpdm.htm
Hello @remrem
Luckily I said how to do it :-) (Pov' Ducros who is unscathed) :-)
It's OK now I'm looking and coming back to you ;-)
Very simple, you have no distance constraint between your carts so they can shift from each other. SW has no information on the distance between the trolleys so he does what he wants (it's a bit complicated to explain to you in two words but if you want I can tell you)
Put a connecting rod between each axle and this will keep you the right distance between each trolley.
On the other hand, the way you made your assembly will cause you a lot of problems. I'd be you ;-)
1° I would remove your "chain repetition" with all the trolleys. Because you think you save time with repetition but in reality no!
2° I will make a sub-assembly consisting of "Swing + Trolley + Connecting Rod
3° I would ride every B+C+B on your trajectory
4° I would connect the connecting rod with the carriage that follows
5°) very very important , each sub-assembly "B+C+V" must be declared as flexible otherwise nothing will move
And then everything will work perfectly, guaranteed ZZ
Kind regards
Hello zorro_mp.
Thank you for all your advice. your idea is very good (connecting rods), thank you
I do have a question.
When I do a chain repetition it tells me that the spacing will be equal between each link, so I don't understand why you have to put your linkages. (even if the idea is great)
The weird thing is that the distance for all the carts remains the same except between the first and the last. Why?
+1 to @ Zozo
For the distance between the first and the last it depends
of your chain length and the distance interval between your repetitions
and the n of repetitions
which of + is when you put rods the distance is not the same as the length of the chain
We cut the corners
be as careful as it crawls in curves the loaded swings
and the effect of swings such as are non indicates
@+ ;-)
That is the explanation
1°) The distance of the current trajectory is not important enough, go there, at 1080 wide and the PB disappears.
Why ? Is good depending on the positioning, you have trolleys with a distance of 324.75 when they are on the same straight line, whereas if you take what happens in the corner, you only have a cord length of 314.16 + 55.64 to go to the trolley before the turn. This indicates that the spacing can range from 314.16 to 369.80. You remember, it's a matter of code and bow where the bow is always longer than the string. However, only the connecting rod that remains in all the figures equal to the chord means that you will always have a constant distance.
So if the width is insufficient (like on your model , at one point it overlaps because one catches up with the other. If you put the width enough, the trolleys cannot catch each other even if the distance between them varies in the corners.
From the point of view of mechanical tensile strength, the link chain spirit as your drawing is better, the solution with linkage means that you have a constant space in all points of the circuit. Depending on the type of bucket, the tie rod has other advantages, but is only to be used when there is a wheel at the top and bottom, while your system has a straight line at the top.
Conclusion : keep your chain system, but suggest increase the width a little for the reasons explained above.
Kind regards
After reading @gt22 's remark, I add that having speeds that are not constant between the buckets will make them more prone to swaying.
But this is only true if the speed is fast enough: which is often the case if you don't want the operator to wait for the system to make a turn to have the bucket in front of him, if the indexing of the buckets by an electronic system does not exist.
For the chain repeat, you must first tick, equal spacing, this will allow you to determine the right length of chain (don't forget that there will be a tension system).
Thank you for all these tips, but I remain on my idea that it's not normal that this distance between the first and the last, changes when I specified that I wanted a fixed spacing....
Brief. I did a simple little exercise to show you that it works when you don't put anything on the trolleys.
I still believe that this is a beug
Play with the attached file and you'll see that there's no problem.
That's what I selected (equal space)
@Lucbirus
Indeed there is a completely illogical thing, since the cart moves faster or slower and spaces out or catches up for no good reason. Space is not constant independently of the logic I explained earlier.
It's something in the settings but rather on the attachment of the carriage.
The attachment is done on a single axis but SW considers that the two axes of the trolley always remain in contact with the line is more than strange.
This remains true with or without swings.
If you don't want to waste your time, use a real chain with links and the fake links that go well.
I do a lot of cinematics and I have set myself a rule which is to never use the repetition functions because it always messes up at one time or another (and hell as soon as you make the slightest modification. So obviously I waste a little time assembling everything by hand, but I save a thousand times that time when I don't have to solve unsolvable software whims for days.
Occasionally tell us how you solved your problem in the end. Thank you Lucbirus
If you had already selected "equal space", the distance gap must be between the first and last element of the repeat.
You must therefore adjust the length of your curve to:
- have a space between 2 links that is a multiple of the pitch;
- have the last distance that is equal to this space.
The simplest way is to set the value of this space, the length of the curve is then equal to this space multiplied by the number of baskets.