Automatically tuneable anti-vibration boring system

Details Automatically tuneable anti-vibration boring system Automatically tuneable anti-vibration boring system

1996-12-09

1998-09-22

Howell, Daniel W.

Gear cutting, milling, or planing

Milling

With means to dampen vibration

408143, B23B 3900

Patent

active

058105280

ABSTRACT:
A lead slug is axially slidably mounted within a longitudinal cavity in the oring shaft of an automatically tuneable anti-vibration boring system. The lead slug is resiliently held in the longitudinal cavity by resilient spring members at its axial ends thereby permitting resonant axial vibration at a frequency determined by the mass of the lead slug and the spring constant of the resilient spring members. A vibration detector within the boring shaft transmits a vibration signal to a controller in response to a vibration of the boring system. The controller transmits a signal to a linear actuator which changes a preload on the resilient spring members, and thereby changes the resonant axial vibration frequency of the lead slug. The linear actuator moves toward or away from the lead slug until the lead slug, resonating at its resonant frequency, reduces the vibration of the boring system.

REFERENCES:
patent: 5170103 (1992-12-01), Rouch et al.
patent: 5518347 (1996-05-01), Cobb, Jr.
patent: 5558477 (1996-09-01), Browning et al.

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