A method for machining a cutting tool (1, 21) which comprises a cutting tool body (2, 22) and at least one cutting insert (3, 4, 5, 23) with at least one cutting edge (10, 30) attached to the cutting tool body (2, 22), whereby the machining is carried out by a machining device (50) which comprises
- a fixing device (51) which receives and fixes the cutting tool (1, 21),
- a material removal device (56) which removes material on the cutting insert (3, 4, 5, 23), and
- a movement device (53), wherein the movement device (53) moves the cutting tool (1, 21) received in the fixing device (51) and the material removal device (56) relative to each other for targeted material removal,
- comprising the following method steps
- a) specifying cutting edge target data for the cutting edge (10, 30), whereby the cutting edge target data comprises at least one property from the following set:
- {cutting edge position relative to a cutting tool based coordinate system, cutting edge geometry, cutting edge contour relative to the cutting edge based coordinate system},
- b) specifying geometric material removal device data, including the shape and size of the material removal device (56),
- c) fixing the cutting tool (1, 21) in the fixing device (51),
- d) defining a three-dimensional surface of the cutting tool (1, 21) arranged in the fixing device (51) at least in those portions of the cutting tool (1, 21) that comprise the cutting insert (3, 4, 5, 23), whereby this surface is defined as a three-dimensional cutting tool surface (17, 18)
- e) determining those subregions of the three-dimensional cutting tool surface (17, 18) that form a surface of the cutting insert (3, 4, 5, 23) and are located adjacent to the cutting edge (10, 30) of the cutting insert (3, 4, 5, 23), whereby these subregions are defined as cutting edge boundary surfaces (11a, 12a, 31a, 32a)
- f) determining cutting edge real data from the cutting edge boundary surfaces (11a, 12a, 31a, 32a), whereby the cutting edge real data includes at least the property contained in the cutting edge target data,
- g) comparing the cutting edge real data with the cutting edge target data,
- h) if the deviation between the cutting edge real data and the cutting edge target data is greater than a predetermined tolerance:
- i) determining a movement path (15) of the movement device (53) from the predefined material removal device data and the difference between the cutting edge real data and the cutting edge target data, such that, in the event of a relative movement of the cutting tool (1, 21) and the material removal device (56) and simultaneous material removal at the cutting tool (1, 21) with the material removal device (56), the cutting edge (10, 30) is formed with the cutting edge target data within the specified tolerance and a collision between the cutting tool (1, 21) and the material removal device (56) is prevented,
- j) controlling the material removal device (56) and the movement device (53) on the basis of the determined movement path and carrying out the associated relative movement with simultaneous removal of material at the cutting insert (3, 4, 5, 23) with the material removal device (56).