METHOD FOR REGULATING ROBOTIC PROCESS OF PERFORATING HOLES IN PRODUCT HAVING RIGID INTERNAL PARTITIONS OR HIDDEN STIFFENERS Russian patent published in 2023 - IPC B23B49/00 B25J11/00 

FIELD: drilling processing.

SUBSTANCE: invention can be used for the robotic process of perforating holes in sandwich structures, including those made of polymer composite materials having rigid internal partitions or hidden stiffeners. The method includes the use of a robot equipped with a drilling tool and mechanisms for its feeding and rotation, while using the robot, the drilling tool is moved to a position corresponding to the coordinates of the first hole, and the tool is axially fed until it touches the surface of the product, after which, using a strain gauge mounted on chuck of a drilling tool continuously, the actual value of the axial force on the drilling tool P_act arising during the perforation process is measured and compared with a predetermined value of the axial force P_set, and based on the comparison results, the working feed rate of the drilling tool is regulated. When P_act exceeds P_set by 50% or more, the detection of an obstacle to the drill in the form of a stiffener or internal partition is recorded and the tool feed rate is reduced by at least 2 times, whereas the hole is drilled to a given depth without reducing the rotation speed, after which the robot moves the drilling tool to a position corresponding to the coordinates of the next hole.

EFFECT: improved reliability and quality of hole perforation.

1 cl, 2 dwg