Abstract: An automated exchangeable parts feeding system which permits rapid exchange of parts presentation devices so that different size and shape parts can be handled on the parts feeding system. The automated exchangeable parts feeding system includes a parts presentation device having a tool exchange unit attached thereto, and a base exchange unit. The exchange units are mutually adapted to be coupled and decoupled to and from one another. At least one of the exchange units is controllably operable for coupling and decoupling. A robot arm or a pick and place device grasps and places the presentation device on the base exchange unit. The robot arm or pick and place device also functions to grasp and remove the presentation device from the base exchange unit. A control source coordinates the operation of at least one of the exchange units and the robot or pick and place device. The automated exchangeable parts feeding system further includes an optical detector, e.g.

Abstract: An overload detection device (100) adapted for mounting between the end of a robot arm (104) and tooling (106) employs an interlocking pneumatic chamber subassembly (1) and a stemmed plate (2) pneumatically secured in a unique "engaging registration" relationship under normal loading conditions. An annular metal bearing member (16) fixed to the chamber subassembly (1) has an elevated sealing surace (56) which provides an airtight seal only when the components are in engaging registration. An excessive load upsets the engaging registration relationship allowing air to immediately escape and the normally rigid coupling provided by the overload detection device (100) to become compliant. The reduction in pressure is concurrently sensed by a specially designed, externally mounted removable pressure sensor (3). The pressure sensor (3) includes a small snap-acting electrical switch (24) which is actuated by a loose fitting unsealed piston (27).