Production using a machine tool of faces definable by cone segments

A method for producing or machining a non-conical sealing face of a closure part or a non-conical sealing face of a valve seat of a shut-off valve using a machine tool having at least two linear axes and at least one rotary axis for generating a relative movement between a tool and the closure part or the valve seal, said method comprising:

• defining the non-conical sealing face by a segment of a cone;
• retrieving an executable cycle for producing or machining the non-conical sealing face by a user of the machine tool on a graphical user interface of a numerical controller of the machine tool which controls the linear and rotary axes;
• parameterizing the retrieved cycle by user input of geometric specifications of the segment of the cone defining the non-conical sealing face and input of manufacturing specifications for producing or machining the non-conical sealing face on the graphical user interface of the numerical controller;
• generating a parts program executable by the numerical controller with the parameterized cycle and the numerical controller without recourse to an external CAM system;
• and
• executing the parts program by the numerical controller to generate relative movement along a path defined by the parts program for producing or machining the non-conical sealing face.