HAND-HELD MACHINE TOOL

The invention relates to a mobile machine tool (10) comprising a guide element (30)， having a guide surface (32)， for guiding the machine tool and a workpiece surface (WO) of the workpiece (W) to one another along a machining path (BA)， in particular a machining line. The machine tool comprises a drive unit (11) having a drive motor (12) for driving a tool receptacle arranged on the drive unit (11) for receiving a work tool (15) and a detection device for detecting at least one workpiece reference (RB， RE) which is associated， with respect to a machining path (BA)， with a machining start point (BB) where the work tool (15) starts the machining of the workpiece (W) or with a machining end point (BE) where the work tool (15) ends the machining of the workpiece (W). According to the invention， the tool receptacle is designed for rotationally driving the work tool (15) about an axis of rotation (D) and for adjusting a penetration depth of the work tool (15) into the workpiece by means of a depth adjustment device (20) between depth adjustment positions (T1， T2， T3). The work tool has， on its radial outer circumference (17)， a cutting region for cutting the workpiece (W) thus forming a machining edge (KB， KE) which are at different distances from the at least one workpiece reference (RB， RE) depending on at least two depth adjusting positions (T1， T2， T3) in which the work tool projects at different distances from the guide surface， and the machine tool uses a depth adjustment device (70) for determining a distance value (DB) of the distance of the machining edge (KB， KE) to at least one workpiece reference (RB， RE) and for determining a depth predetermined value (TV) for the depth adjustment position (T1， T2， T3) in accordance with the distance value.