Computerized numerical control automatic sewing device

A computerized numerical control automatic sewing device comprising a sewing head having a stitch forming place with a thread cut-off device and a workpiece holder for holding a workpiece to be sewn, the sewing head and the workpiece holder being movable relative to one another in two co-ordinate directions by means of two carriages displaceable perpendicularly to one another each along a sliding path to produce a seam within an operating range of the workpiece holder, a thread device is spaced a predetermined distance from the stitch forming place, said trimming device is stationary relative to the forming place and directly below the workpiece holder, and a maximum sliding path of the workpiece holder in each co-ordinate direction is in each case at equal to the dimensions of the operating range in the corresponding co-ordinate direction plus the distance of the trimming device from the stitch forming place in the corresponding co-ordinate direction.