Method and apparatus for mitigating vibration associated with rotary cutting machines
OwnerHarold D. Cookinventor
Life of this patent
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Abstract
A method and apparatus mitigates vibration associated with the rotary cutting machines by providing a first dampening member which is disposed around a tool holder and positioned so as to be compressed intermediate the tool holder and spindle of the rotary cutting machine. A cutting tool is shrink fit to the tool holder. A neck is formed in an elongate shank of cutting tool and has dampening material disposed thereabout. The dampening material disposed around the tool holder, the dampening material disposed around the neck, and the shrink fitting of the cutting tool to the tool holder cooperate so as to minimize undesirable vibration of the cutting tool.
Claims8
A vibration dampened spindle/tool holder assembly comprising:
- a) a spindle having at least one flange;
- b) a tool holder releasibly attached to the spindle for holding a cutting tool, the tool holder having:
- i) a number of cutouts corresponding to the number of flanges, each cutout receiving a flange so as to maintain desirable rotation of the tool holder with respect to the spindle;
- and
- ii) a groove formed thereabout;
- c) an annular dampening member disposed around the tool holder, intermediate the tool holder and the spindle, the dampening member having a first portion receivable into the groove of the tool holder and a second portion compressible intermediate the tool holder and the spindle;
- and
- d) wherein the dampening member dampens vibration of the tool holder relative to the spindle so as to facilitate cutting at enhanced speed, the groove being configured to allow the dampening member to be recessed sufficiently to mitigate interference between the dampening member and the flanges.
A method for enhancing a speed at which a rotary cutting machine operates, the method comprising the steps of:
- a) forming a groove and at least one cutout in a tool holder;
- b) disposing an annular dampening member in the groove of the tool holder;
- c) attaching the tool holder to a spindle of the rotary cutting machine in a manner which effects compression of the dampening member between the tool holder and the spindle, the spindle having flanges formed thereon which are received within the cutouts of the tool holder;
- and
- d) wherein the dampening member dampens vibration of the tool holder relative to the spindle so as to facilitate operation of the rotary cutting machine at an enhanced speed and the groove is configured to allow the dampening member to be recessed sufficiently to mitigate interference between the dampening member and the flanges.
Dependencies are inferred from the claim text.