Positioning fixture for plate-shaped or bar-shaped workpieces in machine tools

摘要

The invention relates to a positioning fixture for plate-shaped or bar-shaped workpieces in machine tools, having an aligning device for the horizontal displacement of the workpiece lying on a conveyor or a machining table against an adjustable positioning stop. In order to permit programming for the passage of workpieces of different width or length, the following features are proposed: a) numerous positioning stops are arranged one after the other on a guide slide in alignment with the displacing direction of the aligning device, which positioning stops are each at the same distance from one another and can be moved individually in a controlled manner into or out of the displacement path of the workpiece; b) the guide slide can be positioned in the said displacing direction to an extent which corresponds to at least the said distance between two positioning stops; c) a drive with a shaft encoder for the displacement measurement is provided for positioning the guide slide.