Patent ID: 6244793
Filing Date: 2001-06-12
Classification: B23B,B23Q,Y10T

Abstract:
A drilling head for simultaneously drilling a plurality of holes in a workpiece comprising:a drill body having a first bore defined vertically therethrough;a first shaft rotatably disposed in said first bore, a first longitudinal end of said first shaft being configured for being clampingly engaged by a chuck of a drilling machine and a second longitudinal end of said center shaft defining a bushing for receiving a drill bit;a second bore defined vertically through at least a portion of said drill body, a second shaft rotatably disposed in said second bore, a longitudinal end of said shaft defining a bushing;a gear train operatively coupled to each said shaft for translating rotation of said first shaft to rotation of said second shaft whereby the shafts are concurrently driven for a simultaneous drilling operation; anda clamping bracket operatively coupled to said drilling head for detachably engaging a post of a drilling machine for positioning said drilling head with respect thereto, said clamping bracket being selectively slidably mounted to said post so as to allow vertical displacement of said drilling head in parallel to said post.