Patent ID: 9427809
Filing Date: 2016-08-30
CPC Classification: B23B

Claim Text:
1. A boring bar fastening device for a single blade or a double blade comprising: a body configured to secure to a cutter and including a first through hole on a front end and a second through hole on a rear end; a first fastening device releasably mounted in the first through hole and including a first fastening end extending out of one end of the first through hole; a first boring bar fastening member releasably mounted on the first fastening end of the first fastening device; a first blade releasably mounted on the first boring bar fastening member; a second fastening device releasably mounted in the second through hole and including a second fastening end extending out of one end of the second through hole and being opposite to the first fastening end of the first fastening device; and a balance weight releasably mounted on the second fastening end of the second fastening device; wherein the balance weight includes a pushing member on one end, the pushing member is exposed; and wherein a distance between the pushing member and an axis of the body is equal to that between the first blade and the axis of the body.