topic Re: How to rig or constraint this. in 3ds Max Forum

How to rig or constraint this.

Anonymous — Wed, 29 Nov 2017 18:17:18 GMT

Hello, I'm out of my depth here and need some help.

(See photo and file) I want to rotate the dummy object in my file, which controls a bar. The bar should then push the red bar up, forcing the large blade on top to rotate. (I'm trying to simulate a damper opening)

How can this be rigged to the red bar is controlling the movement of the blade?

I'm not sure if I have been clear...please let me know if you have any questions.

TIA!!!!

Dean

Re: How to rig or constraint this.

leeminardi — Wed, 29 Nov 2017 20:07:37 GMT

What you want to rig is known as a four-bar linkage. The first couple of minutes of this video I created highlights the process. I used bones in this example but you do not need to.

https://youtu.be/cm7OP3niwvI

I edited your file as follows to rig the mechanism.

- Moved the pivot point of Box 2 (the coupler) to the other end.

- added dummies at the end of box 2 and the "crank"

- moved all pivot points of objects used in the rigging to have the same y coordinate. This will ensure that the OK SOlver plane will be correct.

- Added an IK SOlver from the blade to dummy at the end of box002

- Linke the IK Goal to the dummy at the end of the crank.

Let me know if you have any further questions.

Lee

Re: How to rig or constraint this.

Anonymous — Thu, 30 Nov 2017 14:40:43 GMT

I've been too busy to try this yet, but I'm looking forward to giving this a go. Thanks for putting the effort into providing me an explanation!!! I'll let you know how it goes.

Re: How to rig or constraint this.

Anonymous — Tue, 05 Dec 2017 14:16:42 GMT

Worked perfectly!! It took me a little time to work through precisely how it works, but after that, I'ts not too difficult. Thanks again for the effort you put into explaining it to me!!

Dean

Re: How to rig or constraint this.

Anonymous — Wed, 13 Dec 2017 19:34:32 GMT

Rigging done! Thanks again! Now on to material, lighting ...ect

Dean

Re: How to rig or constraint this.

leeminardi — Wed, 13 Dec 2017 19:48:12 GMT

Slick! Good luck with the rest of the project.

Lee