I have an object containing multiple models with several IK. One model has fcurves (euler rotation only) which gives motor to linked IK models. What I need is bake/convert all IK animations into FCurves.
Is it possible?
Try Bake Action (make sure you're in Pose Mode, it works in Object mode also) and ensure 'apply constraints' is checked. This will clear all your constraint, so if needed I would duplicate the armature and move to another layer before doing this if you need to bake more animations later on.
I made a Blender Addon that automatically creates a new FK mesh/rig without any of the IK/control bones. You can then export that new FK rig wherever you please, while your original remains intact.
I made it because I was having trouble with Bake Action generating a bunch of extra keyframes that I did not want.
You can find it on GitHub - https://github.com/chinedufn/blender-iks-to-fks
Hope it helps!