Cutting tool holder with improved dampening effect

A cutting tool holder comprising:

• a holder body comprising:
• opposing first and second side surfaces and a front surface extending therebetween;
• opposing top and bottom end surfaces extending between the first and second side surfaces;
• a central longitudinal bisecting plane located between the first and second side surfaces and intersecting the front surface;
• a cutting portion located at a top end of the front surface of the holder body;
• a first dampening aperture extending inward from the front surface of the holder body to a first dampening element abutment face, the first dampening aperture extending in a direction substantially parallel with the central longitudinal bisecting plane, the first dampening aperture including a first top inner surface and a first bottom inner surface spaced by a first aperture slot, the first dampening aperture further including a first engagement slot extending inward from the first dampening element abutment face;
• a first vibration dampening element, comprising a first dampening pin and a first dampening sleeve:
• received within the first dampening aperture, the first vibration dampening element lying within and extending substantially parallel with the central longitudinal bisecting plane, the first dampening pin received within the first dampening sleeve for dampening vibrations of the cutting tool holder;
• a second dampening aperture extending inward from the front surface of the holder body to a second dampening element abutment face, the second dampening aperture extending in a direction substantially parallel with the central longitudinal bisecting plane, the second dampening aperture including a second top inner surface and a second bottom inner surface spaced by a second aperture slot, the second dampening aperture further including a second engagement slot extending inward from the second dampening element abutment face;
• a second vibration dampening element, comprising a second dampening pin and a second dampening sleeve, received within the second dampening aperture, the second vibration dampening element lying within and extending substantially parallel with the central longitudinal bisecting plane, the second dampening pin received within the second dampening sleeve for dampening vibrations of the cutting tool holder;
• a stiffening aperture disposed between the first dampening aperture and the second dampening aperture, the stiffening aperture having an inner surface extending inward from the front surface of the holder body to a stiffening element abutment face, the stiffening aperture extending in a direction substantially parallel with the central longitudinal bisecting plane;
• and
• a stiffening element, comprising a stiffening pin without a dampening sleeve, received within the stiffening aperture for increasing a stiffness of the cutting tool holder, the stiffening element lying within and extending substantially parallel with the central longitudinal bisecting plane.