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US 6,109,842 AGranted
Tool holder with harmonic dampening drive mechanism
OwnerHarold D. Cookinventor
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OwnerHarold D. Cookinventor
Estimating the term…
A tool holder that uses a dampening drive member to reduce slippage between the tool holder and the spindle and while further eliminating harmonic resonance. The tool holder is used in a rotating spindle that has at least one cam recess formed on a lower face thereof. The tool holder includes a conically tapered shank portion which is insertable into the spindle. Disposed adjacent to the shank portion is a flange portion. Extending about the flange portion is a compressible dampening drive member that has at least one cam portion sized and configured to engage a respective one of the cam recesses of the spindle. When the tool holder is secured to the spindle, the dampening drive member is compressed therebetween. The dampening drive member is adapted to eliminate harmonic resonance attributable to the use of the tool holder and prevent slippage between the tool holder and the spindle.
A tool holder for use in a rotating spindle which defines a bottom face having at least one cam recess thereon, the tool holder comprising:
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 dampening drive member having at least one cam portion which is receivable into a corresponding recess of the spindle and is compressible between the flange portion and the spindle when the tool holder is inserted thereinto, the dampening drive member being adapted to eliminate harmonic resonance attributable to the use of the tool holder with an extended shank cutting tool and slippage between the tool holder and the spindle.
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 having at least one cam recess formed on a bottom face thereof, comprising the steps of:
Dependencies are inferred from the claim text.