RETURN MODE FOR CORE DRILLING SYSTEMS Russian patent published in 2020 - IPC B28D7/00 B28D1/14 B23B35/00 E21B44/00 

FIELD: turning; drilling.

SUBSTANCE: invention relates to a control method for use of a system of core drilling, including a drilling machine and a feed mechanism for bringing a drilling machine into motion along the fixing machine of the device. Method comprises the following steps: determining the end of the core drilling process by achieving a predetermined threshold value for at least one corresponding predetermined drilling parameter and selecting a return mode to withdraw the drilling tool from the drilled hole at a rotation speed during return, which corresponds to a multiple of the predetermined rotation speed of the initial drilling of the drilling tool at the beginning of the drilling process. In addition, described is a feed mechanism for using said method to bring the core drilling machine into motion along the fixing machine of the device, the core drilling machine for using said method, as well as a system of core drilling for use of said method, including a drilling machine and a feed mechanism to drive the machine along the fixing device.

EFFECT: technical result is optimization of extraction of drilling bit after drilling process.

10 cl, 5 dwg