Tool holder assembly with dampening elements

A tool holder assembly having a central longitudinal axis and comprising:

• a tool holder body having a connector portion and a holder portion, the connector portion structured to engage a rotary machine and the holder portion disposed opposite the connector portion and having an inner diameter surface comprising a plurality of axial grooves;
• and
• a tool receiver structured to receive at least a portion of a cutting tool, the tool receiver having an outer diameter surface comprising a plurality of axial grooves, wherein the tool receiver is mounted in the holder portion so as to align the axial grooves of the inner and outer diameter surfaces and define axial sleeves filled with dampening elements,
• wherein the axial grooves of the outer diameter surface and the dampening elements contacting the axial grooves of the outer diameter surface are not parallel to the central longitudinal axis;
• and
• wherein the axial grooves of the outer diameter surface and the dampening elements contacting the axial grooves of the outer diameter surface are arranged generally helically about the central longitudinal axis.