US3774730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool holder
Assignee: Baroid Technology Inc
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Filing: 1972-04-19
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Granted: 1973-11-27
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Expires: 1992-04-19
Abstract
Abstract A tool holder is provided with vibration dampening means to eliminate chatter marks recorded on workpieces by a cutting tool attached thereto. The vibration dampening characteristics are provided by a high density member located within a longitudinal cavity in the tool holder. The dampening element moves in a direction which counters the normal resonant frequency cutting vibrations generated in the tool holder.
Inventors
- 👤 K Maddux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:40
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/02; B23B29/022; F; F16; F16F; F16F7/00; F16F7/10; F16F7/104; F16F7/108; Y; Y10; Y10T; Y10T408/00; Y10T408/76
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
218 words
A tool holder comprising a supporting body having an elongated cylindrical cavity therein of substantially uniform diameter, a portion of said body being constructed and arranged to support a tool, vibration dampening means for dampening vibrations transferred to said body by said tool, said vibration dampening means comprising an elongated substantially cylindrical dampening member formed of relatively high density material each end of said dampening member being tapered, said dampening member being dimensioned to have substantially universal movement within said cavity in directions to counter vibrations of said tool holder, and mounting means arranged at opposite ends, respectively, of said cavity for mounting said dampening member therein in a manner to transmit the counter vibration movements of said dampening member to said tool holder, said mounting means comprising first and second 0cylindrical blocks corresponding in diameter to the diameter of said cylindrical cavity, each block having an inwardly facing frusto-conical cavity, one of said blocks being fixed in said cylindrical cavity and the second block being arranged to move longitudinaLly therein, said blocks spaced apart sufficiently to accomodate the tapered ends of said dampening member in the respective frusto-conical cavities of said blocks, and resilient means circumscribing the tapered ends of said dampening member arranged to support said tampered ends in said frustoconical cavities in spaced relationship thereto.
Claim 2
Dependent Claim
218 words
A tool holder comprising a supporting body having an elongated cylindrical cavity therein of substantially uniform diameter, a portion of said body being constructed and arranged to support a tool, vibration dampening means for dampening vibrations transferred to said body by said tool, said vibration dampening means comprising an elongated substantially cylindrical dampening member formed of relatively high density material each end of said dampening member being tapered, said dampening member being dimensioned to have substantially universal movement within said cavity in directions to counter vibrations of said tool holder, and mounting means arranged at opposite ends, respectively, of said cavity for mounting said dampening member therein in a manner to transmit the counter vibration movements of said dampening member to said tool holder, said mounting means comprising first and second 0cylindrical blocks corresponding in diameter to the diameter of said cylindrical cavity, each block having an inwardly facing frusto-conical cavity, one of said blocks being fixed in said cylindrical cavity and the second block being arranged to move longitudinaLly therein, said blocks spaced apart sufficiently to accomodate the tapered ends of said dampening member in the respective frusto-conical cavities of said blocks, and resilient means circumscribing the tapered ends of said dampening member arranged to support said tampered ends in said frustoconical cavities in spaced relationship thereto.
Claim 3
Dependent Claim
34 words
A tool holder according to claim 1, wherein each tapered end of said dampening member is provided with an annular groove and said resilient means comprises an ''''0'''' ring mounted in the annular groove.
Claim 4
Dependent Claim
72 words
A tool holder according to claim 2, wherein vibration frequency adjusting means is mounted in said tool holder in cooperative engagement with said movable block for moving the latter longitudinally in said cavity thereby to vary the compression of the resilient means mounted between the tapered ends of said dampening member and the corresponding frusto-conical cavities of said mounting blocks in accordance with maximum and minimum vibration frequencies of said tool holder.
Claim 5
Dependent Claim
49 words
A tool holder according to claim 3 wherein said adjustable second block is provided with an index mark and said tool holder is provided with a sight-aperture arranged to afford a view of the index mark of said adjusable block for monitoring vibration frequency settings of said dampening member.
References Cited (Backward Citations)
US3601229A
Cited
US3618362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |