Harmonic dampener for rotary tool holder
OwnerHarold D. Cookinventor
Life of this patent
Estimating the term…
Abstract
A tool holder for use in a rotating spindle of a milling machine. The tool holder comprises a conically tapered shank portion for insertion into the spindle and a cutting tool mounting portion. Disposed between the shank and mounting portions is a flange portion. Additionally, extending about the shank portion is a dampening member. The dampening member is compressible between the flange portion and the spindle when the tool holder is inserted into the spindle, and is adapted to eliminate harmonic resonance attributable to the use of the tool holder with an extended shank cutting tool.
Claims18
A tool holder for use in a rotating spindle of a milling machine, said tool holder comprising:
- a conically tapered shank portion for insertion into the spindle;
- a cutting tool mounting portion;
- a flange portion disposed between the shank and mounting portions;
- and
- a dampening member extending about the shank portion;
- said dampening member being compressible between the flange portion and the spindle to extend laterally beyond flange and spindle borders upon compression when the tool holder is inserted into the spindle to thereby eliminate harmonic resonance attributable to the use of the tool holder with an extended shank cutting tool.
In a tool holder having a conically tapered shank portion for insertion into a rotating spindle of a milling machine, a cutting tool mounting portion, and a flange portion disposed between the shank and mounting portions, the improvement comprising a dampener member which is compressible between the flange portion and the spindle to extend laterally beyond flange and spindle borders upon compression when the tool holder is inserted thereinto to thereby eliminate harmonic resonance attributable to the use of the tool holder with an extended shank cutting tool.
A method of mounting a tool holder having a conically tapered shank portion, a cutting tool mounting portion, and a flange portion disposed between the shank and mounting portions into a rotating spindle of a milling machine, comprising the steps of:
- (a) providing the tool holder with a dampening member which extends about the shank portion of the tool holder and which extends laterally upon compression;
- (b) inserting the shank portion of the tool holder into the spindle such that the dampening member contacts both the flange portion and the spindle;
- and
- (c) securing the tool holder within the spindle such that the dampening member is compressed between the flange portion and the spindle to extend laterally beyond flange and spindle borders upon such compression.
A tool holder for use in a rotating spindle of a milling machine, said tool holder comprising:
- a conically tapered shank portion for insertion into the spindle;
- a cutting tool mounting portion;
- a dampening member extending about the shank portion;
- and
- a flange portion disposed between the shank and mounting portions and having a retaining lip formed thereon which surrounds the dampening member upon insertion of the tool holder into the spindle;
- said dampening member being compressible between the flange portion and the spindle when the tool holder is inserted into the spindle to thereby eliminate harmonic resonance attributable to the use of the tool holder with an extended shank cutting tool.
In a tool holder having a conically tapered shank portion for insertion into a rotating spindle of a milling machine, a cutting tool mounting portion, and a flange portion disposed between the shank and mounting portions, the improvement comprising a dampener member which is compressible between the flange portion and the spindle when the tool holder is inserted thereinto and wherein said flange member has a retaining lip formed thereon which surrounds the dampening member, whereby said dampening member eliminates harmonic resonance attributable to the use of the tool holder with an extended shank cutting tool.
A method of mounting a tool holder having a conically tapered shank portion, a cutting tool mounting portion, and a flange portion disposed between the shank and mounting portions into a rotating spindle of a milling machine, comprising the steps of:
- (a) providing the tool holder with a dampening member which extends about the shank portion of the tool holder;
- (b) providing a flange portion having a retaining lip formed on and extending there about;
- (c) inserting the shank portion of the tool holder into the spindle such that the dampening member contacts both the flange portion and the spindle;
- and
- (d) securing the tool holder within the spindle such that the dampening member is oriented within the retaining lip and compressed between the flange portion and the spindle.
Dependencies are inferred from the claim text.