Coil Spring
- Thread starter Old Geeser
- Start date
stepalibre
Alibre Super User
VLC works. Thanks for sharing.
Cheers Ralf. That got me there : )
Thanks Jim
I updated the video to a later version after you downloaded it. Sorry about that! The version in your MP4 is good to have though. It's more restrained : )
Old Geeser
Senior Member
Wow That is Georgius!! Thanks for resending in.mp4,
Old Geeser
Senior Member
Thanks, Stephen, for the VLC recommendation. I downloaded it and installed it. I've had it on other systems I've owned and have been happy with it.
I am not clear on who built the spring in the video, or on what system. Is it adaptable to Alibre in any way?
Karl
I am not clear on who built the spring in the video, or on what system. Is it adaptable to Alibre in any way?
Karl
I did. If you go back to my original post you can download a model to play with in Alibre - obviously, without the dynamic ability. Just pull the weight on top of the coil down. Slowly!
Coil Spring
If you model a coil spring, will it behave like a spring in an assembly in design? Compressing and returning to normal state after pressure is released? Thanks Karl
www.alibre.com
Old Geeser
Senior Member
Oh' I just loaded the file in Alibre and it works. Wow what impressive design! Segmented and all. Now it just needs to recoil when pressure is released. Still one impressive design. I have I have to have a closer look.
It could probably do with further attention. I re-worked it in haste, this afternoon, from the 2007 model...
If you want to manipulate the ball and see the chain follow, you can use the Precise Placement tricks here: https://www.alibre.com/forum/index.php?threads/inherent-kinematic-ability.1431/#post-7076
If you break a link, just press F5 : )
If you break a link, just press F5 : )
Old Geeser
Senior Member
Very Cool, Miles. Did you use the scripts?
This was done in 2007! No scripts then...
Edit: Or do you mean a macro driving Precise Placement?
Another way to do this is by designing the coil spring within the assembly and setting the spring height using a driven parameter linked to the surfaces that will be moving. Then when the pistons move, the spring will be resized. One limitation is that it doesn't resize the spring until you stop moving the parts. Here is an example file. The spring is a helical boss.
Attachments
Dependant on the specific model you're animating, you could drive the whole animation using the increments of height, or pitch, in the helical boss dialog box...
Of course that's not going to work... It's cool, though, to set the mouse wheel scroll setting to 1 line and the spinner increment in Part Settings to 1mm and use the mouse wheel to compress and decompress a spring : )
If you use Precise Placement to move the parts. Does it update between each increment of movement?