Patent ID: 11919094
Assignee: KENNAMETAL INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 23:
24. A modular drill apparatus comprising:
a shank having a pocket;
a cylindrical post centrally secured within a bottom of the pocket;
a cutting tip including
a lower portion including a central bore which receives the cylindrical post,
an upper portion and
a channel therebetween; and

an insert assembly interfitted within and supported by the channel, the insert assembly being expandable along a length thereof to translate the cutting tip and the insert assembly toward the bottom of the pocket for securing the cutting tip to the shank within the pocket by providing an interference fit, and retractable along the length to bring the insert assembly into contact with the cylindrical post and release the cutting tip from the pocket by repositioning the cutting tip and the insert assembly a sufficient distance away from the bottom of the pocket and overcoming the interference fit.