Exactly as the title states. I am in the design stage of a slant bed turret lathe. And have my idea pretty much done but I need a simple way to lock the turret in place once positioned.

I don't have air and the lock will need to be power by a pulse from Mach 3. My idea is to have a tapered hole with a tapered pin. I figure there must be something that will pull the pin back so the turret can turn. Does anyone know what I need?