Method and apparatus for measuring and fine points of a tool in a tool holder and method for measuring a working force

A method for measuring and fine points of a tool (8) in a tool holder (1) comprising the steps of: A defining a tool geometry and setting or correcting a reference coordinate (TCP) of the tool (8) in a machine tool control (16), B- approximating the in the tool holder (1) in a desired position the clamped tool (8) on a workpiece and detecting a point of contact between tool (8) and the workpiece, and C- determining the actual position of the tool relative to a coordinate system of the machine tool (2) of the detected contact point, characterized by the steps D- calculating and correcting static tool position E- measuring a working force (F F- calculating and correcting dynamic tool position relative to the coordinate system of the machine tool (2) by fine points of the tool in the tool holder (1).