SU800448A1 - Sliding-contact bearing - Google Patents

Description

one

The invention relates to mechanical engineering and can be used in the support assemblies of high-speed precision machines.

A known slide bearing, comprising a shaft axle, a housing with openings for supplying a lubricant outlet and self-aligning segments U located therein.

However, the support is known to have insufficient accuracy, since the ingress of air into the bearing oil junction causes a random spindle radial error.

The purpose of the invention is to improve the accuracy and reliability of support.

This goal is ensured by the fact that the slide bearing has a sleeve installed in the housing and covering the shaft axle, having longitudinal grooves open towards one of its ends for accommodating self-installing seams, collar grooves on its other end connected to holes for supplying and discharging lubricant, as well as holes and slots, communicating with annular grooves, dp lubricant supply to the inlet and outlet from the exit krmok self-aligning segments.

FIG. 1 shows the slide bearing, cross section; in fig. 2 - sleeve in section A-A in FIG. 1 / in FIG. 3 the same, axonometric projection.

The slide bearing comprises a shaft axle 1, a housing 2 with openings for supplying 3 and discharging 4 lubricants and self-aligning segments 5 located in it. In the housing 2 there is a sleeve 6 with longitudinal slots 7 open to one of its ends for accommodating self-aligning segments 5. At the other end of the sleeve 6 there are annular grooves 8 and 9 connected to the openings 3 and 4 for supplying and discharging lubricant. Holes 10 and 11 and slots 12 and 13 are also formed in the sleeve 6, communicating with the annular grooves 8 and 9.j and through the hole 3, the annular groove 8 ,. openings 10 and slots 12 lubricant is supplied to the entrance edge 14 of segment 5, and through slot J 3, holes 10 and 4 o-r discharge pin 15 of segment 5 is retracted. As the spindle rotates from the wedging action of the oil layer between the trunnion 1 and Segments 5 form an aaaor, into which the lubricant is placed. Such a constructive use of the support prevents the formation of a mechanical mixture of masp with air and its penetration into the gap between the trunnion and segments 5, significantly improves the heat transfer and increases the reliability of the support by reducing the random phase in the ala. The use of the invention makes it possible to improve the accuracy and reliability of the supports of precision machines, the claims of the Sliding bearing comprising the shaft shaft, housing with holes} for supplying 8 84 and lubrication and self-aligning segments located therein, with In order to increase accuracy and reliability, it contains a sleeve installed in the housing and covering the shaft axle, having longitudinal grooves open in the direction of one of its ends, to accommodate self-aligning segments, annular grooves on its other Orie connected with holes for supply and discharge of lubricant as well as holes and slits communicating with annular grooves for supplying lubricant to the inlet and discharging it from the outlet edges samoustanavlivayuschihs segments. Sources of information taken into account at the examination 1. Details and mechanisms of machine tools. Ed. D. N. Reshetov. M., Mechanical Engineering, 1972, v. 2, p. 1O5, rice, 15.

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Claims (1)

The claims A sliding bearing comprising a shaft pin, a housing with holes for supplying and discharging lubricant and self-aligning segments located therein, characterized in that, with a chain for increasing accuracy and reliability, it 5 contains a sleeve installed in the housing and spanning the shaft journal, having grooves longitudinally open towards one of its ends to accommodate self-aligning segments, annular 10 grooves on its other end, connected to holes for supplying and discharging lubricant, and also openings and slots communicating with annular grooves, for supplying grease to the input and withdrawing it from the 15 output edges of the self-aligning segments.