Optimized vibration absorber
First Claim
1. A tuned or tunable boring tool comprising:
- a boring bar having a distal portion configured to support a tool, a proximal portion configured for attachment to a support structure of a metalworking machine, and a tubular body extending between the proximal portion and the distal portion, having an elongated cavity therein;
a dynamic vibration absorber inserted within the elongated cavity of the boring bar, the dynamic vibration absorber comprising;
a mass that vibrates in conjunction with vibration of the boring bar, the mass having a proximal end, positioned adjacent to the proximal portion of the boring bar, and a distal end, positioned adjacent to the distal portion of the boring bar;
at least one proximal support, which is resilient, positioned adjacent to and supporting the proximal end of the mass, wherein the at least one proximal support has a stiffness; and
at least one distal support, which is resilient, positioned adjacent to and supporting the distal end of the mass, wherein the at least one distal support has a stiffness,wherein the at least one proximal support and at least one distal support have different stiffnesses; and
wherein the at least one proximal support comprises a first material, the at least one distal support comprises a second material, and wherein the stiffness of the second material is greater than the stiffness of the first material.
1 Assignment
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Accused Products
Abstract
A tuned or tunable boring tool includes a boring bar defining an elongated cavity therein. A distal end of the boring bar is configured to support a tool or cutting insert. The boring tool further includes a dynamic vibration absorber inserted within the elongated cavity of the boring bar. The dynamic vibration absorber includes a mass that vibrates in conjunction with vibration of the boring bar. The mass has a proximal end and a distal end. The dynamic vibration absorber further includes at least one resilient proximal support positioned adjacent to and supporting the proximal end of the mass and at least one distal resilient support positioned adjacent to and supporting the distal end of the mass. The at least one proximal support and at least one distal support have a different stiffness.
37 Citations
18 Claims
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1. A tuned or tunable boring tool comprising:
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a boring bar having a distal portion configured to support a tool, a proximal portion configured for attachment to a support structure of a metalworking machine, and a tubular body extending between the proximal portion and the distal portion, having an elongated cavity therein; a dynamic vibration absorber inserted within the elongated cavity of the boring bar, the dynamic vibration absorber comprising; a mass that vibrates in conjunction with vibration of the boring bar, the mass having a proximal end, positioned adjacent to the proximal portion of the boring bar, and a distal end, positioned adjacent to the distal portion of the boring bar; at least one proximal support, which is resilient, positioned adjacent to and supporting the proximal end of the mass, wherein the at least one proximal support has a stiffness; and at least one distal support, which is resilient, positioned adjacent to and supporting the distal end of the mass, wherein the at least one distal support has a stiffness, wherein the at least one proximal support and at least one distal support have different stiffnesses; and wherein the at least one proximal support comprises a first material, the at least one distal support comprises a second material, and wherein the stiffness of the second material is greater than the stiffness of the first material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A tuned or tunable boring tool comprising:
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a boring bar having a distal portion configured to support a tool, a proximal portion configured for attachment to a support structure of a metalworking machine, and a tubular body extending between the proximal portion and the distal portion, having an elongated cavity therein; a dynamic vibration absorber inserted within the elongated cavity of the boring bar, the dynamic vibration absorber comprising; a mass that vibrates in conjunction with vibration of the boring bar, the mass having a proximal end, positioned adjacent to the proximal portion of the boring bar, and a distal end, positioned adjacent to the distal portion of the boring bar; at least one proximal support, which is resilient, positioned adjacent to and supporting the proximal end of the mass, wherein the at least one proximal support has a stiffness; and at least one distal support, which is resilient, positioned adjacent to and supporting the distal end of the mass, wherein the at least one distal support has a stiffness, wherein the at least one proximal support and at least one distal support have different stiffnesses; and wherein the dynamic vibration absorber includes at least two distal supports, each distal support is resilient and comprising a material having a stiffness, and wherein the resultant stiffness of the distal supports is greater than the stiffness of the proximal support.
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17. A tuned or tunable boring tool comprising:
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a boring bar having a distal portion configured to support a tool, a proximal portion configured for attachment to a support structure of a metalworking machine, and a tubular body extending between the proximal portion and the distal portion, having an elongated cavity therein; a dynamic vibration absorber inserted within the elongated cavity of the boring bar, the dynamic vibration absorber comprising; a mass that vibrates in conjunction with vibration of the boring bar, the mass having a proximal end, positioned adjacent to the proximal portion of the boring bar, and a distal end, positioned adjacent to the distal portion of the boring bar; at least one proximal support, which is resilient, positioned adjacent to and supporting the proximal end of the mass, wherein the at least one proximal support has a stiffness; and at least one distal support, which is resilient, positioned adjacent to and supporting the distal end of the mass, wherein the at least one distal support has a stiffness, wherein the at least one proximal support and at least one distal support have different stiffnesses; and wherein a number of distal supports is greater than a number of proximal supports.
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18. A tuned or tunable boring tool comprising:
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a boring bar having a distal portion configured to support a tool, a proximal portion configured for attachment to a support structure of a metalworking machine, and a tubular body extending between the proximal portion and the distal portion, having an elongated cavity therein; a dynamic vibration absorber inserted within the elongated cavity of the boring bar, the dynamic vibration absorber comprising; a mass that vibrates in conjunction with vibration of the boring bar, the mass having a proximal end, positioned adjacent to the proximal portion of the boring bar, and a distal end, positioned adjacent to the distal portion of the boring bar; at least one proximal support, which is resilient, positioned adjacent to and supporting the proximal end of the mass, wherein the at least one proximal support has a stiffness; and at least one distal support, which is resilient, positioned adjacent to and supporting the distal end of the mass, wherein the at least one distal support has a stiffness, wherein the at least one proximal support and at least one distal support have different stiffnesses; and wherein a cross-sectional area of the proximal support is greater than a cross-sectional area of the distal support.
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Specification