Cutlery
Patent
1978-03-03
1979-11-27
Butler, Douglas C.
Cutlery
308 35, 308187, 308207A, 308DIG13, B23B 29034
Patent
active
041758021
ABSTRACT:
A boring spindle unit with automatic tool liftoff, especially for the finish boring of a workpiece with an oxide-ceramic boring tool carried by the spindle shaft. The spindle shaft is journaled in at least two main bearings and at least a further bearing is disposed proximal to the main bearing at the tool end of the shaft. During the spindle retraction movement, the additional bearing takes up the journaling of the shaft and has an axis which is offset by a distance from the axis of the main bearings and in a direction opposite that from which the tool projects from the shaft so that the tool does not groove the workpiece during the retraction operation. While the main bearings are effected, the auxiliary bearing receives the shaft with radial play and, while the auxiliary bearing is effective, at least the main bearing proximal to the tool end receives the shaft with radial play.
REFERENCES:
patent: 3664718 (1972-05-01), Uhtenwoldt
patent: 3686986 (1972-08-01), Ledergerber et al.
patent: 3721161 (1973-03-01), Bobst
Werkstatt und Betrieb entitled Lagerungen fur Werkzengmaschinenspindeln, vol. III (1978), No. 4, p. 234.
Publication No. 44110 EA, The Sliding Pad Bearing in FAG Hydrodynamic Spindles, FAG Kugelfischer Georg Schafer & Co., Plant Ebern.
Herla Max
Kessler Franz
Voll Horst
Butler Douglas C.
Kugelfischer Georg Schafer & Co.
Ross Karl F.
LandOfFree
Boring spindle with automatic tool liftoff does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Boring spindle with automatic tool liftoff, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Boring spindle with automatic tool liftoff will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-800126