SU1361397A1 - Hydrostatic bearing - Google Patents

Abstract

The invention relates to mechanical engineering and can be used in spindle assemblies of machine tools. The purpose of the invention is to increase the stiffness and reduce the overall dimensions of the support. The hydrostatic support comprises a housing covering at least two axles of shaft 2. Between the axles of shaft 2 there is one common bearing pocket 6 connected by channel 7 for lubrication with throttle 8. The other bearing pockets 3 are pairwise interconnected taking into account the forces in gear teeth . Each group of pockets 3 is connected to one choke 9. With this connection, the supports become smaller and contain fewer chokes. 2 I.P. sl P co 05 CdE SO O U2.i

Description

The invention relates to mechanical engineering and can be used in spinning knots of metal-cutting machine tools. The purpose of the invention is to increase stiffness and reduce overall dimensions.

FIG. 1 shows a hydrostatic bearing, general view, with one additional shaft journal; figure 2 - the same, with two additional axles of the shaft.

The hydrostatic support includes a housing 1, which encompasses the trunnions of the shafts 2, on the working surface of which the carrying pockets 3 are evenly spaced along the circumference, as well as the channels 4 for supplying lubricant from the power source 5. Between parallel axes of shaft 2, there is one common supporting pocket 6 connected by a channel 7 for supplying lubricant under pressure with a throttle 8.

The remaining bearing pockets 3 are connected one diametrically opposite to the 25 pockets of each axle into groups that are connected by channels 4 for supplying lubricant to one throttle 9. The axles of the shafts 2 are interconnected by a gear (not shown on Q).

Hydrostatic bearing works as follows

When the axles of shaft 2 rotate, they are acted upon by oppositely directed forces: tangential Fj and radial Fj ,, reduced from the pole of engagement to the axes of the axles of the shaft. Under the action of the radial forces F, the pressure in the opposite bearing pockets 3 40 rises, and in the central pocket 6 it drops.

35

Similarly, the pressure is redistributed in pairwise connected pockets 3 under the action of tangential forces F

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Paired connection of pockets and location of chokes, taking into account the forces in the gearing between the shafts, while simplifying the design, increase the rigidity of the hydrostatic. supports in comparison with separate designs of supports on each shaft.

Claims (1)

Invention Formula Hydrostatic support, comprising a housing enclosing the shaft axle, on its working surface there is 1 uniformly located bearing pockets along the circumference, as well as channels for supplying lubricant from the power source and throttles for adjusting the pressure in the pockets, which is increase stiffness and reduce overall dimensions, the dispute is equipped with at least one additional, located parallel to the first shaft axle located in the housing, as well as uniformly located circumferential frames mana, is made on the working noBepxHocTji of the body, and channels for lubrication supply, while between the axles of the shaft there is one common carrier pocket connected by a channel of supply to the throttle, and the remaining bearing pockets are united in one diametrically opposite pocket of each axle of the shaft into groups connected channels for the supply of lubrication with one throttle. Editor N. Dumbass Order 6211/40 Circulation 755 Subscription VNSHSHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Non-industrial and printing company, Uzhgorod, st. Project, 4 Phage. 2 Compiled by T. Khromova Tehred A. Kravchuk Proofreader L. Pilipenko