公开(公告)号：US20230022019A1

公开(公告)日：2023-01-26

申请号：US17380734

申请日：2021-07-20

Applicant: Kennametal Inc.

Inventor： Marcelo Euripedes Silva ,  Ruy Frota

IPC: B23B51/00

Abstract: A modular drill apparatus (100) includes: a shank (110) having a pocket (112); a cylindrical post (117) centrally secured within a bottom (114) of the pocket (112); a cutting tip (130) including a lower portion (131) including a central bore (136) which receives the cylindrical post (117), an upper portion (132) and a channel (134) therebetween; and an insert assembly (150) interfitted within and supported by the channel (134), the insert assembly (150) being expandable along a length thereof for securing the cutting tip (130) to the shank (110) within the pocket (112) by providing an interference fit and retractable along the length thereof for releasing the cutting tip (130) from the pocket (112) by overcoming the interference fit.