Instrumented Tool Changer for Robots
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Using two concentric rings, with relative motion imparted by the robot rotary axis turning one ring while pins hold the other ring fixed to the tool changer rack, a tool changer makes pneumatic and electrical connections as well as mechanical connections during the tool changing process. No external actuation is required. The mechanical connection is made by engagement of the three tangs of the tool tang cap by the bayonet ring. This engagement is accomplished by rotating the tool changer body with the rotary axis of the robot, while the bayonet ring is held rotationally fixed by a pin that engages a slot in the tool changer rack. The torque of the rotary axis of the robot is transferred to the tool body by two hardened stainless steel locating pins that also serve as the pneumatic connectors.