Gear cutting – milling – or planing – Milling – With means to dampen vibration
Patent
1985-10-08
1989-06-06
Bilnsky, Z. R.
Gear cutting, milling, or planing
Milling
With means to dampen vibration
279 1Q, 408143, 408239R, 409233, B23C 526
Patent
active
048367230
ABSTRACT:
An improved high-speed spindle assembly for a shank-driven cutting tool comprises a hollow spindle for a collet, a titanium alloy drawbar within the spindle for threadingly engaging the collet, and a tubular resilient member within the spindle surrounding the drawbar for damping vibrations. A transverse resilient member in a threaded portion of the collet resists rotation of the collet on the drawbar. A ten-tooth involute spline provides precise sliding engagement of the drawbar within the spindle. A pair of ball bearings are axially clamped to the spindle by a pair of titanium nuts, a lower nut having a flange closely spaced from an external annular surface of a spindle housing for excluding foreign matter, an upper nut having a cavity for axially retaining a flange of the drawbar.
REFERENCES:
patent: 2711904 (1955-06-01), Gartner et al.
patent: 3520228 (1970-07-01), Wohlteil
patent: 3984192 (1976-10-01), Wanner et al.
patent: 4583894 (1986-04-01), Mitchell
patent: 4605349 (1986-08-01), Bone
Metals Handbook, Ninth Ed., vol. 3, pp. 354-356, 12-1983.
"Belleville Springs" catalog, Bearing Engineers, Inc., L.A., CA, p. 3 (undated).
"EX300 Drilling System" flyer, Excellon Automation, Torrance, CA (undated).
"Spindle Technological Advancements", Excellon Automation, Torrance, CA, 6pp (undated).
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