20130276606 | CUTTING TOOL HEAD FOR MULTI-PLY FABRIC CUTTING MACHINE - A cutting tool head for a sheet material cutting machine has a pressure foot mounted by way of linear actuators operable to independently move the pressure foot vertically relative to an eccentric drive mechanism and a knife assembly of the tool head. The knife assembly includes a support shaft driven by the eccentric mechanism, a blade connected to the support shaft, and a splined shaft between the support shaft and blade The splined shaft slides in a splined bushing, and the eccentric mechanism drives reciprocating motion of the support shaft, the splined shaft, and the blade relative to the splined bushing. The splined bushing is rotatable to rotate the splined shaft and blade. A blade sharpener of the tool head has a sharpening disc backed by a magnetic disc to attract the blade into evenly distributed contact with the sharpening surface, and to retain metal shavings on the sharpening disc. | 10-24-2013 |