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Instrumented Tool Changer for Robots

IP.com Disclosure Number: IPCOM000059996D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Drake, SH: AUTHOR [+3]

Abstract

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.

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Instrumented Tool Changer for Robots

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. The pneumatic and electrical connections are made during the mating and engagement of the tool changer assembly and the tool body assembly. The electrical connections are made using zero or low-insertion-force connectors. This type of connector allows for many connect- disconnect cycles. The pneumatic connections are made using a quick disconnect type fitting. Fig. 1 shows an exploded view of the tool changer assembly. The friction sleeve 1 is the means by which the tool changer body assembly is attached to the robot. The tool changer body 2 houses the zero- insertion-force connectors, the pneumatic connectors, and the necessary porting...