constraints

[egghead]

This has probably been answered before and is probably a simple answer.

I have a model of a pneumatic cylinder that I want to constrain the rod between X & X + stroke. I can do it with a flush constraint which is fine. Now when I put this sub assembly into another assembly I would like the sub assembly to be flexible but between the two constrain dimensions I have in the subassembly. I don't really want to use positional representations as I would like to be able to move it between the two extreme points.

can someone point me in the right direction for this please.

[blandb · Accepted solution]

Limits. Set the min and max value you want it to travel.

[mcgyvr · Accepted solution]

---

@blandb wrote:

Limits. Set the min and max value you want it to travel.

---

To expand on that just a bit..

In the cylinder subassembly use constraint limits (part of the constraint dialog) to set your min and max.

Then once you place that cylinder into its upper level assembly where its used right click on it and select "flexible". That will allow it to move between those. 

[egghead]

that's great.

that's works 99%, if I grab the rod it will move from one extent to the other however. if I let go of the mouse button it snaps back to the original home position.

[Anonymous]

Do you have the box "Use offset as resting position" checked? If so that could cause this behavior.