Attaching a Pincer to a Robot

How should I attach my pincer to my robot? My pincer is a claw, and I have a basic 2 bar lift. I need to be inside of 18" by 18"

A hinge-lock system ought to get the claw within 18" with relative ease. There’s plenty of examples on here on the forums. Perhaps you can take a few ideas from the robot reveals out there for your hinge-&-lock system.