192 clutches and power-stop control – Stop mechanism – Overload release
Patent
1991-02-14
1992-02-11
Herrmann, Allan D.
192 clutches and power-stop control
Stop mechanism
Overload release
192 56F, 200 82A, 251359, 403 31, 901 49, B25J 1906, B25J 1902, F16D 4328
Patent
active
050869019
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). A switch trip-point adjustment screw (34) is installed on the central axis of the piston (27). An electrical output signal from the pressure sensor (3) can be directly connected to the Emergency Stop Circuit of the robot to halt movement of the robot arm when an overload is detected.
REFERENCES:
patent: 2147243 (1939-02-01), Cornell, Jr.
patent: 4215254 (1980-07-01), Ohki
patent: 4664588 (1989-09-01), Newell et al.
patent: 4714865 (1987-12-01), Chin et al.
"Automation Components", Barry Wright Corp. pp. 8-10.
"Your Turnkey Supplier of Robot End of Arm Tooling", EOA Systems, pp. 12-13.
"Omnidirectional Overload Detecting Clutch-Model 1000", PickOmatic Systems, 2 pages.
"MDI Wrist-Watch", Manufacturing Directives, Inc., 7 pages.
"Robotic Uni-Coupler Safety Joint", Robotic Accessories, 11 pages.
"Accu-Trip", Robotic Accessores, 2 pages.
"Versa-Matic", Robotic Accessories, 4 pages.
"Overload Protector Wrist-OPW", Mecanotron, 3 pages.
"Robotic Overload Clutch", Applied Robotics, Inc. 3 pages.
Annis Clifford C.
Petronis Thomas J.
Applied Robotics Inc.
Herrmann Allan D.
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