Assembly3 preview

[jpg87]

The component mis-placement problem you encountered is related to body shape transformation bug, introduced probably around 0.6.1. It's been fixed now. There is one thing you need to be aware, though. Body view object has a property called DisplayModeBody. When you set it to Tip, which you did in elast_masselottes, you will be displaying the shape stored in Body directly. Any constrain you create will be using geometry element on Body directly, instead of its child feature. This is not recommended right now, because the shape is prone to change. I will improve asm3 in this regard, but at the moment, it is better to stick with the default 'Through' display mode. The fix of body transformation bug affects your assembly. I have fixed it, and you can download it here

Thank you very much.
I'm not sure I understood the details but in any case I did not do this adjustment intentionally!
I redid the whole of my assembly and I am refining my tutorial : as soon as I finish I will make it available.

[triplus]

@realthunder

Could you evaluate your Links effort and its usefulness for BIM purposes as noted here:

https://forum.freecadweb.org/viewtopic. ... 95#p242180

Thanks.

[jpg87]

Hello,

here is the new version of my tuto :

https://forum.freecadweb.org/viewtopic.php?f=36&t=29562

[Vincent B]

How to assembly these two parts?
The PartB (pin) must moves freely in the slot and can be raised.

[fosselius]

Create a line that goes centered along the slot and then constrain the slider against that. The sliders circle edge against line with the "point on line" constraint. Circle edge will be translated to the center point in this case.

Check this out and it will all make sense.
http://solvespace.com/linkage.pl

Solvspace is designed to use a sketched skeleton to constrain degree of motion then constrain 3d shapes against that skeleton.

There are also instructions early on in this thread (page 8, 9, 10)

[jpg87]

Hello,
The binding displays the expected DOFs using the constraints :
PointPlaneDistance (set to -2.5mm: the sign determines the side where the piece is placed) from the cylindrical surfaces of B and plane of A (see image).
PlaneAlignment from the flat surfaces of B and plane of A (see image).

liaisonGG.png (54.06 KiB) Viewed 8720 times

[Vincent B]

Create a line that goes centered along the slot and then constrain the slider against that. The sliders circle edge against line with the "point on line" constraint. Circle edge will be translated to the center point in this case.

Sound like a nice method, but I can't succeed.
...
@jpg87: Your method is working.

[fosselius]

Use Draft Line, you have to constrain it with the "locked" constraint.
https://www.freecadweb.org/wiki/Draft_Line

Attached solved with point on line

[Vincent B]

Use Draft Line, you have to constrain it with the "locked" constraint.

yes i've got it.

[jpg87]

Hello,

I deposited a collection of a series of new tests at the following address!

https://forum.freecadweb.org/viewtopic.php?f=36&t=29643

Thanks again to @realthunder .
As a draftsman in mechanical engineering, I found everything I needed with Asm3.
My dream for the future: mathematical relationships between angular positions (gears) or linear angle-displacement (threads).