Program controlled punching and nibbling machine
AssigneePullmax Aktiebolag
InventorEsko Lehtinen
Life of this patent
Estimating the term…
Abstract
The coordinate slides of a computer controlled punching and nibbling machine are coupled by resilient elements with respective nuts engaging screws driven by motors controlled by computer programming. The resilient coupling between the slides and the respective nuts permits the motors to run and thereby drive the nuts during periods when the slides are held stationary by engagement of the punching and nibbling tool with a workpiece mounted on the upper slide. As soon as the tool is disengaged from the workpiece, the workpiece is quickly moved to the next position by energy stored in the resilient elements. A sensor between each of the slides and the respective nut senses the displacement of the nut relative to the slide and transmits this information to the computer.
Claims7
In a punching and nibbling machine comprising a frame, a first slide movable on said frame in a first linear direction, a second slide movable on said first slide in a second linear direction at least approximately perpendicular to said first direction, means on said second slide for holding a workpiece, and a tool reciprocable on said frame for periodic engagement with and disengagement from said workpiece,
- means for moving said slides comprising a program-controlled motor for each of said slides, a linear transmission element driven by each of said motors respectively and movable in the direction of movement of the respective slide, and resilient means coupling each of said slides individually with the respective transmission element for movement of said transmission element by said motor while the respective slide is held stationary by engagement of said tool with said workpiece, said slide being moved to predetermined position by force stored in said resilient coupling means upon disengagement of said tool from said workpiece.
Dependencies are inferred from the claim text.