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

Claim 26:
27. A modular drill apparatus comprising:
a shank having a pocket defined by a bottom and sidewalls which extend from the bottom, wherein each sidewall is inclined at an angle with respect to a central longitudinal axis of the shank;
a cylindrical post centrally secured within the 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 for securing the cutting tip to the shank within the pocket by providing an interference fit and retractable along the length thereof to bring the insert assembly into contact with the cylindrical post and release the cutting tip from the pocket by overcoming the interference fit.