Abstract: A quick change mounting system for machine tools provides tool-carrying fixtures having a system-standard dimensional referencing system and fluidically controlled tooling to effect the desired machining operations. The tool-carrying fixtures are mounted to and dismounted from a system-standard tooling plate that carries fluidic supply conduits and mutually operative connectors that effect connection and disconnection of the fluidic system in response to the mounting or dismounting of the tool-carrying fixtures on its mounting plate. A change from one tool-carrying fixture to another can be accomplished by dismounting the former tool-carrying fixture from its mounting plate and mounting a replacement tool-carrying fixture.

Abstract: A rotary indexing mechanism for indexing a shaft or shaft mounted member in precise rotary increments and with precise end-of-movement positioning includes a reciprocable rack and pinion mechanism coupled to a rotatably mounted shaft. The pinion is coupled to the shaft through a one-way clutch so that movement of the rack in a first direction is coupled through the clutch to cause a corresponding rotation of the shaft with the clutch uncoupling the shaft during movement of the rack in the opposite direction. A first stop member(s) is carried by the shaft for movement along a path that orbits the shaft axis. A second stop member is carried by the rack along a linear path that intersects the orbit of the first stop member. As the rack rotates the shaft through a rotary increment, the rack-carried second member is positioned in the orbit of the first stop member with the two members engaging to halt further rotary movement.