Tool changing – Tool transfer to or from matrix – Matrix including means to latch tool
Patent
1998-03-26
1999-11-30
Briggs, William
Tool changing
Tool transfer to or from matrix
Matrix including means to latch tool
414736, 901 41, 483 58, 483901, B23Q 3155
Patent
active
059933658
ABSTRACT:
A tool attachment and release system for robotic arms which using a magnet for supplying the attractive force to hold the tool to the robotic arm while allowing separation of tools from the robotic arm without manual intervention. A series of tools are held at predetermined locations in a tool rack allowing the robot to automatically deposit therein or acquire therefrom a particular tool. Permanent magnets are mounted between steel inserts in the tool attachment block. The steel insert are used to direct and concentrate magnetic flux to the tool attachment surface and also to each of two shunt bar contact surfaces. During the attach and disconnect operations, magnetic flux shunt bars are placed in close proximity to the two shunt bar contact surfaces to thereby provide an alternative path for the magnetic flux. This greatly reduces but does not eliminate the attractive force between the tool adapter plate and the attachment block. This results in a relatively easy disconnect of a particular tool with its associated adapter plate thus allowing a simple, inexpensive, low force capability device to be used for controlling the disconnect process. However, there will remain enough residual attractive force to keep the adapter plate from falling off of the attachment block in an uncontrolled manner.
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Raes Camiel J.
Stagnitto Joseph E.
White James A.
Bocchetti Mark G.
Briggs William
Eastman Kodak Company
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