Tool holder for precision holes on the spindle centerline in a lathe

A tool holding device for positioning a cutting tool on a centerline of a lathe, the assembly comprising:

• a cutting tool comprising a first end and a second end, wherein the first end is positioned within a cutting tool clamp;
• and
• a main body connected to the cutting tool clamp, the main body being connectable to a lathe spindle via a plurality of bolts, the plurality of bolts to enable the adjustment of the orientation of the cutting tool,
• wherein the cutting tool clamp is machined at an eccentric centerline of the main body to enable a centerline of the cutting tool to be positioned in-line with a centerline of the lathe spindle.

A method for utilizing a tool holding device for identifying the centerline of a lathe spindle, the method comprising the steps of:

• attaching a main body of a cutting tool holder to a lathe spindle;
• utilizing a dial indicator on the lathe spindle to assess concentricity of a cavity of a cutting tool clamp;
• rotating the main body to re-orient a centerline of the cavity to align the cavity of the cavity to the centerline of the lathe spindle;
• securing the main body in a fixed position on the lathe spindle using a plurality of bolts;
• and
• inserting a cutting tool into the cavity.