Abstract: The invention relates to a method for the manufacture of die-forged or die-stamped workpieces, in which, after the stamping or forging process, the burr on the rough workpiece is removed, and the rough workpiece is machined at least at the functional faces, and subsequently heat-treated to achieve a structural change in the material. In order to eliminate some of the machining steps and thereby achieve a faster and less expensive manufacture of the workpiece, a trajectory laser is used to remove the burr on the rough workpiece. The removal of the burr is preferably carried out after the heat-treatment of the rough workpiece, whereby the laser also produces the functional faces of the rough workpiece in the same manufacturing step.

Abstract: An improved device for measuring the tightening angle on a wrench. The directionally fixed member is a liquid body which may include solid particles or a turbine wheel, the relative velocity of which is monitored to determine the relative motion of the liquid with respect to the wrench.