The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 16, 1998
Filed:
Sep. 05, 1996
James A Hoffmann, Grandview, WI (US);
Douglas L St Onge, Milwaukee, WI (US);
ABB Flexible Automation, Inc., New Berlin, WI (US);
Abstract
A compliant end effector particularly suited for use with a robotic arm for accurately cutting and trimming the edges of a hot molded sheet of flexible plastic. The compliant end effector includes a mount secured to the robotic arm, an adjustment assembly pivotally attached to the mount, a guide that engages the plastic sheet near the area to be cut and trimmed, a tool for cutting and trimming the flexible sheet, and a pneumatic cylinder that biases the guide into engagement with the flexible sheet and presses the sheet against a rigid surface. The pneumatic cylinder moves the guide and tool through a range of positions as the robotic arm moves along a single path of travel down the length of the flexible sheet. The guide remains in contact with the flexible sheet despite warping or other imperfections in the stabilizing surface. The tool is fixed a predetermined distance from the guide to ensure that the plastic sheet is cut and trimmed within specific tolerances. By rotating the end effector, tabs and recesses can be formed in the edge of the flexible sheet while the robot moves along its single path of travel.