| 摘要 |
699,099. Machine tool details. FISCHER AKT.-GES., G. Oct. 27, 1950 [Nov. 30, 1949], No. 26273/50. Class 83 (iii). [Also in Group XXXIV] A support and bearings, for the work-receiving end 16, Fig. 2, of a spindle 12 in a lathe, comprises a ball thrust bearing 26 and a roller bearing 20, carrying the spindle in a casing 1. The inner race of the roller bearing 20 is forced upon a coned part 19 of the spindle 12 by a nut 32 acting through a splined gear wheel 31, a ring 30 having spherical surfaces 29 and a spacing member 25, the radial play of the roller bearing being adjusted by elastic expansion of its inner race. The axial play in the thrust bearing 26 is adjusted by a ring nut 23, screwed into a member 22 secured to the casing 1, acting through a ring 24. The ring 24 has a spherical surface 28, and abuts the outer race of the roller bearing 20, which in turn abuts a ring 27. The adjusting nuts 32, 23 can be clamped in position. A roller bearing 34, Fig. 3, is provided at that end of the spindle 12 distant from the work-receiving end, the inner race ring engaging with two ring members 33, 35 on its opposite sides, both of these rings having spherical surfaces, co-operating respectively with a similar spherical surface 40 on the spindle, and with a spherical surface on a pulley 36 moved axially by a clampable adjusting nut 37. |
