I have finally got back to the drawing system to try and progress my models. The model below consists of 4 sub assemlies.
The main support frame, 2
Left arm assemly, 4
Right Arm Assembly 3
Hydraulic Ram. 1
My question is getting the arms to move in this level assembly.
the main frame is just a weldment with no moving parts.
The two arms are connected to this frame via a concentric constraint with the bolt and the bush pivot and a conincident constraint on the bottom face of the bush pivot and the frame mount.
Both arms are able to move a full 360 degrees of revolution when dragged with the mouse.
the ram is assembled with concentric contrainst on rod and housing, with a coincident constraint with a minumum and maximum offest. The ram works fine in the sub assembly using the mouse.
When it is brought into this assembly, constrained to the mounts, then made flexible, the rods move in and out as they should. However, when connected to the right arm as shown, I canāt get the arm to move.
All joints/constraint points have been left with 1 DOF to allow the movement, but still nothing.
Any ideas or suggestions on where to find āusefulā help instructions on how to do this would be welcome. The help file is still somewhat lacking even in version 2022.
Does ZW3d have driven constraints like inventor, where you open the constraint and click the drive button and the constraint goes through itās movements on the screen.?
Another little thing, I canāt seem to remember, where to find the setting to make the constraints be with the sub assemblies/components.
hi Russty:
It is recommended that you use the assembly configuration function to control the constraintsļ¼
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Hi Ken
Check the ālock rotationā selection for concentric constraints (which often catches me out)
Otherwise try moving the flexible items off their limits before adding the constraint.
Cheers
Wayne
Thanks for your input.
I have used this at present. Still doesnāt help me with making the constraints run in the assembly.
In inventor, I could drive the constraint from a drop down list in the manager window and tell the program to drive or run the constraint. This way, in this instance, I could get the ram to extend and the side arms would close and open from this driven constraint.
Is there something similar in 2022?
Regards
Ken
What exactly does, āsend me the fileā mean?
Is it a Pack and send all I need to do? or something else.
It is currently 2.30PM in Murwillumbah NSW so what is your time at home.
HI Russtyļ¼
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Yes, pack it for me,
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Iām going to have dinner. At 14:00 p.m. Beijing time, Iāll help you remote
Hi Ken,
by default ZW locks DOF in all sub assemblies, but it easy to unlock them.
RMB of the subassy in the Assy Manager. -
And Make Flexible.
It should work for subs one level down.
Cheers - Paul
I did the Make Flexible before, but didnāt work.
I have found the offended problem, but caused others when I fixed that one.
Working through them now.
Bit complicated, but hey, that how we like it.
Do you know of a way to make the constraint drive, like in Inventor. click a drive button and the constrain activates as if in real life. I can drag the bits with the mouse, but I would prefer it to drive.
Animation can do that. You can tell any constraint what values to have and any time and it will move linearly between keyframes(KF)(time periods)
e.g. Say the ram starts at stroke 0 at 0 sec. Then you set a KF at 10sec where the stroke is still 0, the ram will move 0 in that time. Then at 20 sec you tell the ram to be at 50mm stroke, it will use the 10 sec between KF10sec and KF20sec to move 50mm. Any associated constraints will also move according to the constraints.
Inventor is probably king of this activity amongst all the mid range CAD. So you will not get the level of analytics out of ZW3D at this point you might get from some others.
But if you have everything driven of the one constraint it is is easy.
You can have multiple actions occurring simultaneous AND you can change Camera position and zoom simultaneously but your head will explode trying to make it all work.
Cheers - Paul
in ZW3D2023X this āMake Flexibleā for moving subcomponents is not available.
How can solve such scenarios?
E.g.
Assembly1
|_ Asseembly2
|_Part1 -->Want to make it āflexibleā to move it in Assembly1
|_Part2
Part3
Part4
If I activate Assembly1 I cannot drag the Part1. Only if I activate Assembly 2.
(Contraints are all set fine)
Oki, I think I got it.
To make Part1 in Assembly2 āflexibleā to Assembly1, I need to make the Assembly2 from rigid to flexible (icon changed of Assembly2).
But what about āmake virtualā of Part1? If I do this, I can no mor eopen it as a part, only edit in tree and then itās handled like part with all features from the part, a little weiredā¦
Ahhhrghā¦ How can I switch back that Part1 from virtual to a normal part?
Again me, if I not do the Part1 from Assembly2 āvirtualā (what ever it shall mean) and I make the Assembly2 flexible it does not work to drag part1 from activated Assembly1.
Only when I convert this Part1 as a virtual part and the obove assy is flexible then I can drag it in top assy.
I looks like the āmake virtualā function is more or less a ācopy Part1 features to obove assyā and āsignā Part1 as an assembly, but inhibit to open this āvirtualpartā.
With the function āMake Independentā it looks liek itās a export to this āvirtualpartā to disk as ap normal part. And then it can back replaced with function āChange compomonentā from disk. Works fine, but a bit complicated.
