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Modular Fluid-Driven Cylinder Assembly Having Gripping Means at One or Both Ends

IP.com Disclosure Number: IPCOM000039514D
Original Publication Date: 1987-Jun-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Schaefer, JO: AUTHOR

Abstract

Robotic environments utilize compressed air to actuate grippers and thus are somewhat limited by air pressure and the size of the gripper which can be installed on the robot. Typically, the force of a gripper is a function of the pressure and the area of the piston of the gripper mechanism. The resulting forces in some cases are insufficient for the load to be manipulated. The figure illustrates a fluid-driven cylinder which may be built up to yield the forces required for a particular load. The cylinder comprises a series of identical blocks with a cylindrical bore 12 through the block 10. Also extending parallel to the bore 12 are input passageS 14 and 16. The passages conduct air to and from the operating cylindrical bore 12 to move the piston 18 bidirectionally, which rides within the bore 12.

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Modular Fluid-Driven Cylinder Assembly Having Gripping Means at One or Both Ends

Robotic environments utilize compressed air to actuate grippers and thus are somewhat limited by air pressure and the size of the gripper which can be installed on the robot. Typically, the force of a gripper is a function of the pressure and the area of the piston of the gripper mechanism. The resulting forces in some cases are insufficient for the load to be manipulated. The figure illustrates a fluid-driven cylinder which may be built up to yield the forces required for a particular load. The cylinder comprises a series of identical blocks with a cylindrical bore 12 through the block 10. Also extending parallel to the bore 12 are input passageS 14 and 16. The passages conduct air to and from the operating cylindrical bore 12 to move the piston 18 bidirectionally, which rides within the bore 12. Between the blocks 10 are separators 20 which have air passages 22 and 24 branching from passages 14 and 16, respectively. The pressurizing of the air in passage 14 will act to move pistons 18 within the bore 12, and thus extend shaft 26. The relief of the pressure in passage 14 and the pressurization of passage 16 causes a reverse movement of the piston 18 and the retraction of the shaft 26. The shaft may be attached to a gripper or other end effector that would utilize the axial movement of the shaft 26. The force exerted by the shaft 26 can be tailored to the needs by the assembly of sev...