Abstract: A protective enclosure for a machine tool is constructed so as to be a free standing assembly completely independent from the machine tool. The protective enclosure is provided on rollers so that unimpeded access may be had to the machine tool by rolling away the protective enclosure. The protective enclosure is further provided with a safety locking system for interrupting operation of the machine tool if the protective cover is removed during operation or preventing starting of the machine tool if the protective cover is not fully in place.

Abstract: Tool grinding machine with a, from the machine stand (2) carried and horizontally oriented work platform (10), a work piece (200) receiving and upon the work platform (10) seated work piece carrier (20), as well as a grinder tool (300) receiving grinder head (30), which is mounted on a grinder upright support (32), which is oriented vertically and which is rotatable about a vertically extending axis via a rotating disk (36), wherein the rotating disk (36) is provided below the work platform (10) and integrated in the machine stand (2), and a carrier arm (34) is provided for the grinder upright support (32), which at one end is rigidly attached to the rotating disk (36) and at the other end extends sideways beyond the work platform (10), in such a manner that the thereupon provided grinder upright support (32) is rotatable around the work platform (10).