Machining module and machine tool with a unit for detecting the profile of the tool, and method for detecting the profile of the tool

Material removing machining module for a machine tool comprising:

• a part support intended to receive a part to be machined;
• a control unit of the part support adapted to control and to modify the position of the part support in the machining module;
• a toolholder intended to receive a tool having an end portion used for machining the part mounted on the part support;
• a control unit of the toolholder adapted to control and to modify the position of the toolholder in the machining module;
• and
• a unit for detecting the profile of the tool mounted on the toolholder, said detection unit comprising an optical system for determining the profile of said end portion of the tool mounted on the toolholder,
• wherein said optical system is mounted on the part support,
• wherein said machining module further includes a target that is part of the optical device, said target being mounted on the toolholder and including an active face forming a positioning reference adapted to be moved on the optical axis (O) of the optical system when the toolholder is in a predetermined angular position about its axis (X) and in a predetermined axial position along its axis (X), forming a position referencing the toolholder relative to the part support,
• wherein the target is a three-dimensional target including on an active face:
• a first structure defining a plane reference face, and
• a second structure having a face inclined relative to said plane reference face, and
• wherein said optical system comprises a first image capture system and a second image capture system, wherein the difference between the focal distance of the second image capture system and the focal distance of the first image capture system is between the minimum distance and the maximum distance inclusive separating the reference face from the inclined face.