Use of reverse engineering principles to design a twist drill sharpening device

The sharpening of twist drills is an important issue for ensuring optimal performance in the exploitation of these categories of tools. The study of the specialized literature highlighted the existence of distinct methods and equipment currently used for sharpening twist drills. It was found that by using principles of the reverse engineering method it is possible to identify innovative solutions that would ensure the necessary conditions for the correct sharpening of the twist drills in small mechanical workshops, which do not have specialized sharpening machines. A solution for a sharpening device was proposed, based on obtaining a cylindrical shape of the drill tooth flank. The possibility of using the device on a universal lathe was considered. The manufacturing of the device and the performance of preliminary experimental tests confirmed the possibilities of using the proposed device for sharpening twist drills.