Patent ID: 8292554

Claim:
A device for deburring bore edges of a bore having a diameter<20 mm, said device comprising: a base body having a central longitudinal axis, a longitudinal bore, a front end, and a rear end adapted to be mounted in a chuck, a guide sleeve having a longitudinal bore, a rear portion, a front portion, and a front end, said rear portion of said guide sleeve comprising a guide collar of a larger diameter received in said longitudinal bore of said base body, said front portion of said guide sleeve comprising a guide neck of a smaller diameter, said front end of said guide sleeve having a recess oriented transversely to said central longitudinal axis of said base body, a blade received in said recess of said guide sleeve for slideable displacement therein and having a control recess therein, a control bolt received in said longitudinal bore of said guide sleeve for slideable displacement therein, said control bolt having a pressure piece on a rear end thereof and external to said guide sleeve and a bolt tip on a front end thereof, said bolt tip engaged in said control recess of said blade, and a compression spring disposed in said longitudinal bore of said base body and having a front end abutting said pressure piece and a rear end supported against movement toward said rear end of said base body, said compression spring biasing said bolt tip of said control bolt in said control recess of said blade thereby providing a biasing force against movement of said blade in said recess.