Spring centering device for tool spindles

Gear cutting – milling – or planing – Milling – With means to dampen vibration

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Details

408143, 408239R, 409233, B23C 526

Patent

active

046053492

ABSTRACT:
An elastomeric sleeve is fitted within a spindle bore over a coaxial spring assembly used to actuate a drawbar clamp. The sleeve takes up the radial clearance space normally provided for the spring assembly, so that as the diameter of the spring assembly changes during compression cycles, the sleeve will be radially compliant and tend to keep the spring assembly centered, thereby minimizing vibrations while the spindle is rotated.

REFERENCES:
patent: 3242819 (1966-03-01), Erikson
patent: 4063488 (1977-12-01), Kagerer
patent: 4352612 (1982-10-01), Benatti
patent: 4480366 (1984-11-01), Takahashi et al.
"Bellevill Spring Washers Solve Problems of High Loads" bulletin, Associated Spring Corporation, Bristol, Conn., 12/1966.
"SPEC Belleville Spring Washers" catalog No. B-401, Associated Spring Corporation, Bristol, Conn., 8/1968.

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