| 摘要 |
925,299. Bearings. E. KIRCHNER. Nov. 1, 1960 [Nov. 2, 1959; July 21, 1960], No. 37420/60. Class 12 (1). [Also in Groups XXII and XXIII] Fine adjustment means for the work-carrier or tool-carrier of a machine tool, or, for the journal mountings of shafts, employs wedge members with part-cylindrical or part-spherical contacting faces with different centres of curvature which are moved angularly relative to a stationary guide to give a small linear displacement. A guiding member 1, Fig. 1, which may be the guiding bed of a machine tool is provided with a curved supporting surface 3 saving a centre Mo and the guided member 2, such as a table, has a curved undersurface 4 of different curvature to that of surface 3 and with a centre Ml spaced above centre M0. An intermediate member 5 has surfaces curved to fit between the members 1 and 2. Relative adjustment of members 2 and 5 may be arranged to produce a small deviation " h " in the vertical position of the table 2. Application of the adjustment device to a machinetool slide 64 is shown in Fig. 8. Two intermediate curved members may be employed such as in the support of a milling-machine spindle, Figs. 4 and 5. The spindle 32 is located in a sleeve 33 which is retained in a housing 30 by means of two sets of adjusting devices arranged at right-angles backed by elastic members 38, 39. The curved intermediate members 34, 35 and 36, 37 may be adjusted relatively to give lateral adjustment to the spindle or to alter the inclination thereof. Application of the adjusting device to a grinding machine spindle, Fig. 3 (not shown), is described, also a method of grinding slides is described in which the slide is deformed by heat while the grinding operation is performed. |
