Importance

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Abstract

A metal spinning machine with at least one roller holder, the roller holder being mounted exchangeably on a tool rest system with a roller rotatably borne by it. The tool rest system permits the roller to be displaced in at least two coordinate directions relative to a workpiece to be formed by spinning. The workpiece can be mounted on a rotatable metal spinning machine spindle with a rotationally symmetrical shaping tool. The metal spinning machine is equipped with a means limiting the force which can be exerted by the roller on the workpiece. The new metal spinning machine is characterized by the fact that the roller holder (1) is made with two holder parts (2, 3) which are slidingly displaceable on one another, one of them being configured as a fixed holder part (2) which can be attached to the tool rest system (4) and the other being configured as the displaceable holding part (3) bearing the roller (10), that the one holder part (3) is made with a cylinder (20) which can be fed a pressure medium, that the other holder part (3) is made with a piston (30) which can be actuated by the pressure medium with a predeterminable force in the extending direction, and that the roller (10) can be pushed back dynamically by an excessive force applied to it by the workpiece (30).

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First Claim