A brushless spindle motor for a grinding machine including...

Details A brushless spindle motor for a grinding machine including... A brushless spindle motor for a grinding machine including...

B - Operations, Transporting

24

B

B24B 5/00 (2006.01) B23Q 1/70 (2006.01) B24B 41/04 (2006.01) B24B 49/10 (2006.01) F16C 32/06 (2006.01) H02K 5/16 (2006.01) H02K 9/19 (2006.01) H02K 11/00 (2006.01)

Patent

CA 2168472

A grinding machine provided with a spindle rotating under the influence of a cantilever mounted rare earth permanent magnet motor. Hydrostatic fluid film bearings are provided between the ends of the spindle and a bronze bearing to support spindle in such a manner so as to eliminate wear. A single oil reservoir is used to supply oil to the hydrostatic bearings, as well as to the cooling jacket labyrinth of the motor.

Une rectifieuse est dotée d'un axe (5) entrainé par un moteur, à aimant permanent (40) à base de terres rares, monté en porte à faux. Des paliers à film d'un fluide hydrostatique (41, 42) sont disposés entre les extrémités de l'axe (5) et un palier de bronze (64, 65) pour supporter cet axe de façon à en prévenir l'usure. Un réservoir d'huile unique (20) permet d'alimenter en huile ces paliers hydrostatiques (41, 42) ainsi que le labyrinthe (17) constituant la chemise de refroidissement de ce moteur (40).

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