阅读说明：本技术 一种静压轴承轴承套 (Hydrostatic bearing sleeve ) 是由 姜润启 宋景华 于 2020-07-06 设计创作，主要内容包括：本发明公开了一种静压轴承轴承套,具有轴承套,所述轴承套的端面中心设置有套接孔,轴承套外周靠近左端的部位设置有环形凸起,轴承套的左端设置有密封孔,右端套接有静压套,所述静压套端面中心设置有左右连通的轴孔,静压套外周靠近右端的部位设置有环形结构的限位凸起,所述限位凸起卡接在轴承套的右端外侧,该限位凸起的外周设置有与轴孔连通的泄油区。这种静压轴承轴承套既保证了轴承套的刚性,又最大限度的提高的轴承套的弹性,即使油温发生变化,轴与轴承套之间的油膜间隙也不会发生变化,从而弥补了现有技术油膜易发生变化、轴承易变形以及轴承运转精度不高的缺点,使轴承可以达到0.2u米的精度,转速可达10000转/分钟。(The invention discloses a hydrostatic bearing sleeve which is provided with a bearing sleeve, wherein a sleeve joint hole is formed in the center of the end face of the bearing sleeve, an annular bulge is arranged at the position, close to the left end, of the periphery of the bearing sleeve, a sealing hole is formed in the left end of the bearing sleeve, a hydrostatic sleeve is sleeved at the right end of the bearing sleeve, a shaft hole which is communicated with the left side and the right side is formed in the center of the end face of the hydrostatic sleeve, a limiting bulge of an annular structure is arranged at the position, close to the right end, of the periphery of the hydrostatic sleeve, the limiting bulge is clamped at the outer side of the right end of the bearing. The static pressure bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the maximum extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of the oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, and leading the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 r/min.)

1. The utility model provides a hydrostatic bearing housing, has bearing housing (1) of being made by the alloy, the terminal surface center of bearing housing (1) is provided with circular cup joint hole (11) of left right intercommunication, and the position that the periphery of bearing housing (1) is close to the left end is provided with annular arch, its characterized in that: the left end of bearing housing (1) is provided with cup joint hole (11) endocentric sealed hole (13), and the right-hand member cup joints with cup joint hole (11) complex static pressure cover (2), static pressure cover (2) are the copper sheathing, and shaft hole (21) of intercommunication about its terminal surface center is provided with, and the position that static pressure cover (2) periphery is close to the right-hand member is provided with the spacing arch of loop configuration, spacing protruding joint is in the right-hand member outside of bearing housing (1), and this spacing bellied periphery is provided with the oil drain district (22) that communicates with shaft hole (21).

2. The hydrostatic bearing cartridge of claim 1, wherein: the oil leakage area (22) is at least provided with two.

3. The hydrostatic bearing cartridge of claim 1, wherein: the sealing hole (13) is a counter bore, and a sealing ring (12) matched with the sealing hole in an embedded mode is arranged in the sealing hole (13).

4. The hydrostatic bearing cartridge of claim 1, wherein: the bearing sleeve (1) is characterized in that a plurality of assembling holes (14) which are communicated left and right are formed in the annular bulge at the left end of the bearing sleeve.

5. The hydrostatic bearing cartridge of claim 1, wherein: the left end of the static pressure sleeve (2) sleeved in the bearing sleeve (1) is connected with the right end of the sealing hole (13).

6. The hydrostatic bearing cartridge of claim 1, wherein: the right end face of the static pressure sleeve (2) is provided with an annular static pressure groove (23) concentric with the shaft hole (21).

7. The hydrostatic bearing cartridge of claim 1, wherein: and an oil guide groove (24) communicated with the right end face of the static pressure sleeve (2) is arranged at the part of the inner wall of the shaft hole (21) corresponding to the oil drainage area (22).

8. The hydrostatic bearing cartridge of claim 1, wherein: the left end and the right end of an inner shaft hole (21) of the static pressure sleeve (2) are provided with guide flaring holes which are flared outwards.

Technical Field

The invention relates to the field of hydrostatic bearings, in particular to a hydrostatic bearing sleeve.

Background

A hydrostatic bearing is one type of sliding bearing, and is a sliding bearing in which a pressure lubricant is forcibly pumped into a minute gap between a bearing and a shaft by a pressure pump. The high-speed rotating device is mainly used in the fields which need to run at low speed and require high bearing capacity, high rotating precision and high rotating speed, such as various heavy machine tools and high-precision machine tools.

At present, most of hydrostatic bearing sleeves in the market are made of steel or iron castings, the structure is strong in rigidity, but the elasticity is extremely low, the oil temperature change is large, and the precision is easy to deform due to temperature change, so that the thickness of an oil film is easy to change when a transmission shaft runs in the bearing sleeves, the running precision of the hydrostatic bearing is not improved, the precision of the hydrostatic bearing is in a laggard situation internationally, and the hydrostatic bearing with high precision required by China completely depends on import.

Disclosure of Invention

The invention aims to solve the technical problem of providing a hydrostatic bearing sleeve which has high elasticity and is not easy to deform due to temperature change so as to ensure the running precision of a bearing.

In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a hydrostatic bearing housing, has the bearing housing of being made by the alloy, the terminal surface center of bearing housing is provided with the circular hole of cup jointing of intercommunication about, and the position that the bearing housing periphery is close to the left end is provided with annular arch, the left end of bearing housing be provided with cup joint the endocentric sealed hole in hole, the right-hand member cup joint with cup joint hole complex hydrostatic cover, the hydrostatic cover is the copper sheathing, and the shaft hole of intercommunication about its terminal surface center is provided with, and the position that the hydrostatic cover periphery is close to the right-hand member is provided with the spacing arch of loop configuration, spacing protruding joint is in the right-hand member outside of bearing housing, and this spacing bellied periphery is provided with the draining district with the shaft hole.

Preferably, the oil drainage area has at least two.

Preferably, the sealing hole is a counter bore, and a sealing ring matched with the sealing hole in an embedded mode is arranged in the sealing hole.

Preferably, a plurality of assembling holes communicated left and right are formed in the annular bulge at the left end of the bearing sleeve.

Preferably, the left end of the static pressure sleeve sleeved in the bearing sleeve is connected with the right end of the sealing hole.

Preferably, the right end face of the static pressure sleeve is provided with an annular static pressure groove concentric with the shaft hole.

Preferably, the part of the inner wall of the shaft hole corresponding to the oil drainage area is provided with an oil guide groove communicated with the right end face of the static pressure sleeve.

Preferably, the left end and the right end of the shaft hole in the static pressure sleeve are provided with guide flaring holes which are flared outwards.

Compared with the prior art, the invention has the advantages that: the static pressure bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the maximum extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of the oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, and leading the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 r/min.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of the internal structure of a hydrostatic bearing housing according to the present invention;

FIG. 2 is a sectional view of the inner structure of a bearing housing of a hydrostatic bearing housing according to the present invention;

FIG. 3 is a cross-sectional view of the internal structure of an axial thrust static pressure sleeve in a static pressure bearing sleeve of the present invention;

fig. 4 is a structural sectional view of a in fig. 3.

In the figure: 1. a bearing housing; 11. sleeving a hole; 12. a seal ring; 13. sealing the hole; 14. an assembly hole; 2. a static pressure sleeve; 21. a shaft hole; 22. an oil drainage area; 23. a static pressure groove; 24. and an oil guide groove.

Detailed Description

The invention is described in detail below with reference to the following figures and embodiments:

fig. 1 shows a hydrostatic bearing housing, which has a bearing housing 1 made of alloy, as shown in fig. 2, a circular sleeve hole 11 communicating left and right is formed in the center of the end surface of the bearing housing 1, an annular protrusion is formed at a position near the left end of the periphery of the bearing housing 1, a sealing hole 13 concentric with the sleeve hole 11 is formed at the left end of the bearing housing 1, the sealing hole 13 is a countersunk hole, and a sealing ring 12 matched with the sealing hole 13 in an embedded manner is arranged in the sealing hole 13, so that the sealing property in the bearing housing 1 is ensured; the right end of the bearing sleeve 1 is sleeved with a static pressure sleeve 2 matched with the sleeving hole 11, and the left end of the static pressure sleeve 2 sleeved in the bearing sleeve 1 is connected with the right end of the sealing hole 13; as shown in fig. 3, the static pressure sleeve 2 is a copper sleeve, a shaft hole 21 which is communicated with the left and the right is arranged in the center of the end surface of the static pressure sleeve, a limiting bulge with an annular structure is arranged at the position, close to the right end, of the periphery of the static pressure sleeve 2, the limiting bulge is clamped at the outer side of the right end of the bearing sleeve 1, and an oil drainage area 22 communicated with the shaft hole 21 is arranged on the periphery of the limiting bulge; the forming mode between the bearing sleeve 1 and the static pressure sleeve 2 is realized by adopting a mode of carrying out secondary centrifugal copper pouring on a casting.

In order to ensure that the oil film thickness is balanced when the transmission shaft runs in the bearing sleeve, the oil leakage area 22 is at least provided with two oil leakage areas.

In order to facilitate the later assembly between the bearing sleeve 1 and the bearing box, a plurality of assembling holes 14 which are communicated left and right are formed in the annular bulge at the left end of the bearing sleeve 1.

As shown in fig. 4, in order to realize axial thrust of the propeller shaft mounted in the static pressure sleeve 2, the right end surface of the static pressure sleeve 2 is provided with an annular static pressure groove 23 concentric with the shaft hole 21.

In order to facilitate the oil in the oil discharge area 22 to flow into the right end of the static pressure sleeve 2, an oil guide groove 24 communicated with the right end face of the static pressure sleeve 2 is arranged on the inner wall of the shaft hole 21 corresponding to the oil discharge area 22.

In order to facilitate the penetration connection of the transmission shaft, the left end and the right end of the inner shaft hole 21 of the static pressure sleeve 2 are provided with guide flaring holes which are flared outwards.

During the use, bearing housing 1 passes pilot hole 14 through the bolt and fixes on the bearing box, the transmission shaft is worn to establish in the shaft hole 21 of static pressure cover 2, it is sealed through sealing washer 12 between transmission shaft and the bearing housing 1, fluid gets into in the shaft hole 21 through leaking oil district 22, make the oil film formed in the clearance between transmission shaft and the shaft hole 21, fluid also can get into the right-hand member face of static pressure cover 2 through leading oil groove 24 simultaneously, and then in infiltration static pressure groove 23, make the right-hand member face of static pressure cover 2 also can form the oil film that is used for the axial thrust, because the shaping mode between bearing housing 1 and static pressure cover 2 adopts the foundry goods to carry out the mode realization that the secondary centrifugation pours copper, consequently, the elasticity of bearing housing has been improved, the oil film clearance between transmission shaft and the bearing housing can not change when the oil temperature changes in bearing housing 1, the running accuracy of transmission shaft.

The static pressure bearing sleeve not only ensures the rigidity of the bearing sleeve, but also improves the elasticity of the bearing sleeve to the maximum extent, and even if the oil temperature changes, the oil film gap between the shaft and the bearing sleeve cannot change, thereby overcoming the defects of easy change of the oil film, easy deformation of the bearing and low running precision of the bearing in the prior art, and leading the bearing to reach the precision of 0.2u meter and the rotating speed to reach 10000 r/min.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.