Intelligent core-drilling end detection

A control method for using a core drilling system that includes a core drilling machine with a drilling tool for generating a borehole in a material and an advancing device for driving the core drilling machine along a machine-holding device, comprising the steps of:

• performing a core drilling operation with the core drilling system and generating the borehole in the material by the core drilling operation;
• determining that a breakthrough in the material has not occurred during the core drilling operation when it is detected that an advancing speed of the advancing device is reduced, a motor current strength of a drive of the core drilling machine is increased, a torque generated by the drive and transferred to a drill bit of the drilling tool is increased, and a rotational speed value of the drive is reduced;
• or
• determining that a breakthrough in the material has occurred during the core drilling operation when it is not detected that the advancing speed of the advancing device is reduced, the motor current strength of the drive of the core drilling machine is increased, the torque generated by the drive and transferred to the drill bit of the drilling tool is increased, and the rotational speed value of the drive is reduced.