Overload protector for robotic tooling

Details Overload protector for robotic tooling Overload protector for robotic tooling

1997-07-09

1999-10-12

Herrman, Allan D.

Machine element or mechanism

Control lever and linkage systems

Multiple controlling elements for single controlled element

192 5632, 403 15, 403DIG3, 901 49, B25J 1906, B25J 1902, F16D 4328

Patent

active

059641240

ABSTRACT:
An overload protector is provided which is secured to a robot arm and a tool to protect the tool form being overloaded or forced into an abnormal position. A rocker assembly is located within the cavity in the protector and the cavity is pressurized in order to force a wall of the rocker assembly into a sealing relationship with a wall of the cavity. The rocker assembly has a peripheral wall in which a number of semi-conical detents are formed in the wall of the cavity. The detents are accommodated in the recesses when the rocker assembly is in a sealing relationship with the cavity wall. When the tool is overloaded or forced into an abnormal position the rocker assembly rocks in the cavity with resulting leakage of fluid from the cavity and a drop of pressure. A pressure switch detects that drop and signals the robot to stop.

REFERENCES:
patent: 4848546 (1989-07-01), McCormick et al.
patent: 5086901 (1992-02-01), Petronis et al.

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