Pilot device for a suspended knife of a cutting machine for cutting sheet material
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United States of America Patent
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Nov 18, 1997
Grant Date -
N/A
app pub date -
Apr 5, 1995
filing date -
Apr 26, 1994
priority date (Note) -
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Abstract
An automatically controlled cutting machine for cutting multiple layers of fabric sheet material spread out on a cutting table, the cutting machine including a cutting tool which is rotatable about a Z-axis and which includes a cutting knife mounted on a cutting head and a guiding device for guiding the the cutting knife. One end of the knife is mounted in the cutting head so as to be freely rotatable around the Z-axis, and the guiding device is arranged adjacent to the remaining free end of the knife and comprises a socket rigidly connected to the cutting head, and a support which is freely and rotatably mounted in the socket around a vertical axis located in front and adjacent to the cutting edge of the knife, and parallel and spaced a predetermined distance from the Z-axis. The support has a slot surrounding the flanks of the knife. The slot is eccentrically positioned relative to the vertical axis and extends to the trailing edge of the knife such that the knife can twist about the vertical axis under the influence of lateral loads occurring during cutting to bring the force between the sheet material and the flanks of the knife and the bending force of the knife into a balanced equilibrium state.
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