Coupling device for high-speed rotation
AssigneeKennametal Inc.
InventorsTed R. Massa, David R. Siddle, John S. VanKirk
Life of this patent
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Abstract
A coupling device for high speed rotation applications comprised of a first member about a longitudinal axis having a collar integrally attached to a solid base and a second member about a longitudinal axis having a sleeve which is receivable within the collar. When the first and second members are rotated the sleeve expands within the collar to minimize or eliminate any clearance that may exist between the sleeve and collar. The coupling device may, among other applications, be utilized for machine tools such as milling cutters.
Claims20
A coupling device for high rotational speed applications comprised of:
- a) a first member symmetrical about a first longitudinal axis and having a captivating collar extending from a base to a collar front face to define a cavity within the collar;
- and
- b) a second member symmetrical about a second longitudinal axis which may be offset from the first longitudinal axis and having a captivated sleeve integral with the second member and comprised of a cylinder having a solid wall to promote uniform radial expansion and receivable within said cavity.
A coupling device for high rotational speed applications comprised of:
- a) a first member symmetrical about a first longitudinal axis and having a captivating collar extending from a base to a collar front face to define a cavity within the collar wherein the captivating collar is made of a resilient material and has a radial expansion stiffness;
- b) a second member symmetrical about a second longitudinal axis which may be offset from the first longitudinal axis comprised of a captivated sleeve integral with the second member and comprised of a cylinder having a solid wall to promote uniform radial expansion and receivable within said cavity and wherein the captivated sleeve is made of a resilient material and has a radial expansion stiffness which is less than that of the captivating collar;
- and,
- c) wherein the front face of the sleeve is adapted to receive milling cutter inserts mounted peripherally about the sleeve front face and protruding beyond the front face such that when the captivated sleeve is inserted within the captivating collar and the first member and second members are rotated, the captivated sleeve radially expands at a greater rate than the captivating collar and as the rotational speed increases contacts the captivating collar thereby tending to minimize or eliminate the offset between the first and second members.
Dependencies are inferred from the claim text.