[Albert]

You won't be able to export a mechanism from SolidWorks. Instead, you should build a mechanism in RoboDK as shown in this document:
//m.sinclairbody.com/doc/en/General.html#ModelRobot

Another option would be to always export your toolpaths from your Assembly in SolidWorks. You'll then see your part being udpated every time you change your path.

Another option would be to setup different coordinate systems that represent your assembly/mechanism.