Dual-column adjustable circular cone roller main bearing
A technology of tapered roller bearings and tapered rollers, applied in the direction of bearing components, shafts and bearings, rigid supports of bearing components, etc., can solve the problem of disproportionate front and rear loads of main bearings of horizontal lathes, small radial clearance adjustments, and long service life Short and other problems, to achieve the effect of simple structure, less maintenance, long life
Inactive Publication Date: 2009-07-01
张锦喜
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Problems solved by technology
[0003] In order to solve the problems of disproportionate front and rear loads, too small radial clearance adjustment, low speed, poor rigidity and short service life of the main bearing of a horizontal lathe, the present invention provides a double-row adjustable tapered roller main bearing
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[0010] The present invention is arranged in the headstock of horizontal lathe (as shown in the figure), in the main shaft 1 and the main shaft 3, be provided with (main shaft 1) front bearing cover 2, (headstock 3), tapered roller bearing 4, interval Set 5, special disc spring 6, locking screw 7, special round nut 8, low speed large gear 9, high speed pinion 10, round nut 11, washer 12, thrust bearing 13, tapered roller bearing 14, rear cover 15, block sleeve 16, pinion 17, round nut 18 etc. are formed. A pair of special disc springs 7 will have a certain preload when assembling to ensure the stability and reliability in use. This structure is also applicable to multi-row angular contact ball bearings.
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The invention relates to a two-row adjustable tapered roller main bearing. The main bearing of a horizontal lathe in the prior market has two structure one of which is sliding and the other is rolling. The sliding main bearing is defective in large friction, quick abrasion, low rotating speed and the like. The rolling main bearing is improved on rotating speed and rigidity, but is defective in dissymmetric front-rear bearing load of a main shaft which is small-front and large-rear, small radial gap adjustment, and the like. The invention is that a spacer sleeve is arranged between outer rings of the two tapered roller bearing, a pair of dedicated disc-shaped springs which are in prepressed arrangement are arranged between inner rings of the two tapered roller bearing. The invention has the advantages of small friction, strong rigidity, long service life, dissymmetric front-rear bearing load of a main shaft, and the like.
Description
technical field [0001] The invention relates to a double-row adjustable tapered roller main bearing, which is suitable for the main bearing of a horizontal lathe. Background technique [0002] At present, there are two structures of main bearings of horizontal lathes on the market, one is sliding type and the other is rolling type. The first type of sliding main bearing has the disadvantages of large friction, fast wear, low speed, short life, poor rigidity, and high repair cost. Another type of rolling main bearing, GB285-87 double-row cylindrical roller bearings are currently used in the market (this kind of bearing has only one type of ultra-light series for decades), and the speed and rigidity of this bearing are somewhat different. However, its defect is that the loads of the front and rear bearings of the main shaft are disproportionate. Contents of the invention [0003] In order to solve the problems of disproportionate front and rear loads, too small radial clea...
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Inventor 张锦喜
Owner 张锦喜