CN203532527U - Adjustable hybrid bearing - Google Patents
Adjustable hybrid bearing Download PDFInfo
- Publication number
- CN203532527U CN203532527U CN201320706555.9U CN201320706555U CN203532527U CN 203532527 U CN203532527 U CN 203532527U CN 201320706555 U CN201320706555 U CN 201320706555U CN 203532527 U CN203532527 U CN 203532527U
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Abstract
The utility model discloses an adjustable hybrid bearing which comprises a bearing (5) and a bearing bush (4), wherein the bearing (5) is sleeved with the bearing bush (4), and the bearing (5) is cylindrical. The adjustable hybrid bearing is characterized in that a group of axial tapered rib plates (8) is uniformly distributed on the excircle of the bearing (5), and through holes (9) are formed in the tapered rib plates (8); the inner hole of the bearing bush (4) is a tapered hole (14) which is same with the tapered rib plates (8) in taper, and a bearing bush oil inlet hole (15) is formed in the middle of the bearing bush (4). The hybrid bearing can be adjusted according to different loads, so that the adaptive capacity and the operating efficiency of the bearing are expanded. In the operation process of the bearing, an oil film is uniform, and the heat dissipation performance is good. The bearing is suitable for the grinding head of a high-speed roll grinder with the grinding wheel linear velocity of 60m/s.
Description
Technical field
the utility model relates to a kind of adjustable dynamic and hydrostatic bearing, belongs to adjustable high speed and precision roll grinder bistrique filmatic bearing manufacture technology field.
Background technique
the conventional bearing of roll grinder bistrique has three kinds of pure hydrostatic bearing and pure hydraulic bearing and dynamic and hydrostatic bearings.Pure hydrostatic bearing needs a set of powerful oil supply system, and pure hydraulic bearing has friction to produce when starting and stop, and dynamic and hydrostatic bearing is the developing direction of bearing for roll grinder bistrique.At present, its static pressure chamber of the dynamic and hydrostatic bearing that roll grinder bistrique adopts is artificial.And dynamic pressure cavity is to be slightly less than brearing bore due to main shaft diameter, after main shaft is arranged in brearing bore, due to the weight effect of main shaft, the gap forming between main shaft and bearing is exactly dynamic pressure cavity.Above-mentioned dynamic pressure cavity is only applicable to the working state that grinding speed is less than 45m/s.When grinding speed surpasses 45m/s, thereby having exceeded the limit of bearing heat radiation, the heat of generation destroyed oil film, make axle and bearing occur intermetallicly directly to contact, bearing can be burned.Therefore current dynamic and hydrostatic bearing can only be applied to grinding speed lower than the common roll grinding machine of 45m/s, and is not suitable for grinding speed higher than 45m/s and is less than the high speed roll grinder of 150m/s.
in order to adapt to the demand of high speed and precision roll grinder to bearing, I have submitted application number on 03 14th, 2012 is 201210066477.0, name is called the patent of invention (note: by first trial of the dynamic and hydrostatic bearing of a < < high speed roll grinder bistrique and preparation method thereof > >, but go back with no authorized), with the patent No. be 201220094959.2, name is called the utility model patent (note: authorize) of the dynamic and hydrostatic bearing > > of a < < high speed roll grinder bistrique.The object of above-mentioned two patents is to provide a kind of dynamic and hydrostatic bearing for high speed roll grinder that grinding speed is 80m/s, and its method is mainly that to adopt cooling liquid to carry out bearing cooling, does not establish regulating mechanism.This application is the improvement to above-mentioned two patents.
Summary of the invention
the purpose of this utility model is, a kind of adjustable dynamic and hydrostatic bearing is provided, to meet the demand of grinding speed 60m/s high speed roll grinder to bearing.
the technical solution of the utility model:
an adjustable dynamic and hydrostatic bearing, comprises bearing and the bearing housing that is enclosed within bearing outside, and bearing is cylindric; The uniform one group of taper floor axially arranging of bearing top circle, taper floor is provided with linked hole; The endoporus of bearing housing is the cone shape hole identical with taper floor tapering; Bearing housing middle part is provided with bearing housing oil inlet hole.
in aforementioned dynamic and hydrostatic bearing, described bearing housing two ends are respectively equipped with outside thread, and outside thread is provided with oil-through hole; The outside thread at bearing housing two ends is connected with the screw-internal thread fit that rear adjustable side covers with front adjusting end cap respectively; Two to regulate end cap to be circular, and outside is provided with six side's boss; The internal thread place of annulus is provided with the oil groove that goes out radially arranging; Between front adjusting end cap and rear adjusting end cap and bearing, be respectively equipped with front regulator plate and aft ramp.
in aforementioned dynamic and hydrostatic bearing, described front regulator plate and aft ramp are circular, and annulus is provided with the oil outlet radially arranging; The cylindrical of annulus is provided with seal groove, is provided with seal ring in seal groove.
in aforementioned dynamic and hydrostatic bearing, the bearing top circle between described taper floor is provided with rectangle floor, and the height of rectangle floor is lower than the minimum altitude of taper floor; Rectangle floor is provided with bearing oil inlet hole, and the bearing inner wall corresponding with bearing oil inlet hole is provided with oil-feed guiding gutter, oil-feed guiding gutter closed at both ends, closed end distance between bearing edges at two ends 5-8mm.
in aforementioned dynamic and hydrostatic bearing, the described bearing inner wall corresponding with taper floor is provided with static pressure chamber, the rectangle groove that static pressure chamber is closed at both ends, and width is greater than the width of oil-feed guiding gutter.
compared with prior art, the utility model adopts controlling mechanism to regulate the area of bearing and bearing housing taper fit, thereby can according to different loading conditions, regulate the runnability of bearing, has improved application area and the operational efficiency of bearing; Utilize the cooperation between bearing housing and bearing floor, force bearing deform and form wedge shape dynamic pressure cavity, thereby broken through that current traditional roll grinder dynamic and hydrostatic bearing dynamic pressure cavity relies on gravity self-assembling formation and the limitation that causes film distribution inequality; By static pressure chamber, the dry friction while effectively having prevented from starting and stopping, meanwhile, static pressure oil film and dynamic pressure oil film combine to have an effect in the course of the work makes bearing bear outer load; The utility model oil film homogenization is strong, and perfect heat-dissipating belongs to dynamic pressure and static pressure joint effect bearing.Be applicable in bistrique that grinding speed is 60m/s high speed roll grinder.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model;
fig. 2 is schematic diagram of the present utility model;
fig. 3 is the 3-D view of Fig. 1;
fig. 4 is the decomposing schematic representation of Fig. 3.
after regulating end cap, the front regulator plate of 2-, 3-seal ring, 4-bearing housing, 5-bearing, 6-aft ramp, 7-before being labeled as in accompanying drawing: 1-, regulate end cap, 8-taper floor, 9-linked hole, 10-static pressure chamber, 11-rectangle floor, 12-bearing oil inlet hole, 13-oil-feed guiding gutter, 14-cone shape hole, 15-bearing housing oil inlet hole, 16-outside thread, 17-oil outlet, 18-internal thread, 19-six side's boss, 20-seal groove, 21-goes out oil groove, 22-oil-through hole, 23-dynamic pressure cavity, 24-main shaft.
Embodiment
below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
an adjustable dynamic and hydrostatic bearing, as shown in Figure 1, Figure 3 and Figure 4 shown in.Comprise bearing 5 and the bearing housing 4 that is enclosed within bearing 5 outsides, bearing 5 is cylindric; The uniform one group of taper floor 8 axially arranging of bearing 5 cylindricals, taper floor 8 is provided with linked hole 9; The endoporus of bearing housing 4 is the cone shape hole 14 identical with taper floor 8 taperings; Bearing housing 4 middle parts are provided with bearing housing oil inlet hole 15.Bearing housing 4 two ends are respectively equipped with outside thread 16, and outside thread 16 is provided with oil-through hole 22; The outside thread 16 at bearing housing 4 two ends respectively with front adjusting end cap 1 and rear adjusting end cap 7 on internal thread 18 be connected; Two to regulate end cap to be circular, and outside is provided with six side's boss 19; Internal thread 18 places of annulus be provided with radially arrange go out oil groove 21; Between front adjusting end cap 1 and rear adjusting end cap 7 and bearing 5, be respectively equipped with front regulator plate 2 and aft ramp 6.Front regulator plate 2 and aft ramp 6 are circular, and annulus is provided with the oil outlet 17 radially arranging; The cylindrical of annulus is provided with seal groove 20, is provided with seal ring 3 in seal groove 20.Bearing top circle between described taper floor 8 is provided with rectangle floor 11, and the height of rectangle floor 11 is lower than the minimum altitude of taper floor 8; Rectangle floor 11 is provided with bearing oil inlet hole 12, and the bearing inner wall corresponding with bearing oil inlet hole 12 is provided with oil-feed guiding gutter 13, oil-feed guiding gutter 13 closed at both ends, closed end distance between bearing edges at two ends 5-8mm.Bearing 5 inwalls corresponding with taper floor 8 are provided with static pressure chamber 10, the rectangle groove that static pressure chamber 10 is closed at both ends, and width is greater than the width of oil-feed guiding gutter 13.
as depicted in figs. 1 and 2, the utility model is on the cylindrical of bearing 5, to process one group of uniform taper floor 8 to Principles of Regulation of the present utility model; The endoporus of bearing housing 4 is processed into the cone shape hole 14 identical with taper floor 8 taperings, bearing 5 is positioned at the cone shape hole 14 of bearing housing 4 simultaneously; By changing the axial position of bearing 5 in bearing housing cone shape hole, change the side pressure of 4 pairs of taper floors 8 of bearing housing, make brearing bore produce non-circle distortion in various degree, thereby force to form the different wedge shape dynamic pressure cavity 23 in gap between brearing bore and main shaft 24; According to different loads, regulate the size of wedge shape dynamic pressure cavity 23 with adaptive capacity and the operational efficiency of expansion bearing 5.The axial position of described change bearing 5 in bearing housing cone shape hole is, at bearing housing 4 two ends, screw thread is set, by the rear adjusting end cap 7 top last items on bearing housing cone shape hole large diameter end screw thread, holding 5 moves to the little inner-diameter end of bearing housing cone shape hole along bearing housing cone shape hole axis, increase the side pressure of 4 pairs of bearings 5 of bearing housing, the distortion of brearing bore is increased, the wedge shape dynamic pressure cavity forming between brearing bore and main shaft increases, and the front adjusting end cap 1 of bearing housing 4 the other ends plays the role of positioning; By the front adjusting end cap 1 top last item on the little inner-diameter end screw thread of bearing housing cone shape hole, holding 5 moves to bearing housing cone shape hole large diameter end along bearing housing cone shape hole axis, reduce the side pressure of 4 pairs of bearings 5 of bearing housing, the distortion of brearing bore is reduced, the wedge shape dynamic pressure cavity 23 forming between brearing bore and main shaft 24 reduces, and the rear adjusting end cap 7 of bearing housing 4 the other ends plays the role of positioning.Between described taper floor 8, be provided with rectangle floor 11, rectangle floor 11 is provided with bearing oil inlet hole 12, the bearing inner wall corresponding with bearing oil inlet hole 12 is provided with oil-feed guiding gutter 13, oil-feed guiding gutter 13 closed at both ends, and closed end distance between bearing 5 edges at two ends distances are 5-8mm; During main shaft 24 rotation, with the fluid in oil-feed guiding gutter 13, in whole oil-feed guiding gutter length range, to bearing 5 inside, disperse.The bearing inner wall of described taper floor 8 correspondences is provided with static pressure chamber 10, before start, first by bearing oil inlet hole 12, to brearing bore, inject fluid, fluid flows into static pressure chamber 10 by the gap between main shaft 24 and brearing bore, main shaft 24 is suspended in brearing bore, thus the friction between main shaft 24 and bearing 5 while avoiding starting shooting.Described front and back regulate end cap, by front and back regulator plate, bearing 5 two ends are formed to extruding force, and front and back regulator plate is provided with seal ring 3, by seal ring 3, make bearing housing 4 inner chambers form sealing configuration, prevent that excessive bearing 5 internal oil pressure that cause of the inner fluid of bearing from reducing.
Embodiment
as Figure 1-4, wherein Fig. 2 is schematic diagram of the present utility model to the present embodiment, as seen from Figure 2.Dash area in Fig. 2 is main shaft 24, main shaft 24 outsides are bearings 5, the cylindrical of bearing 5 is provided with four taper floors 8, when four taper floors 8 are subject to as pointed in figure after the side pressure as shown in the arrow of taper floor 8, force the endoporus of bearing 5 to produce non-circle distortion, four taper floors 8 inwardly push, and other four rectangle floors 11 expand outwardly, and make eight wedge shape dynamic pressure cavity 23 of the gap formation size interval between main shaft 24 and bearing 5.Described side pressure is the (see figure 4) that the cone shape hole 14 extruding taper floors 8 by bearing housing 4 form, when rear adjusting end cap 7 screws in, rear adjusting end cap 7 heads on bearing 5 to small-bore section of movement of bearing housing cone shape hole by aft ramp 6, side pressure increases, be out of shape also greatlyr, make gap (wedge shape dynamic pressure cavity 23) between rectangle floor 11 corresponding part main shafts 24 and bearing 5 become large.Otherwise, when current adjusting end cap 1 screws in, front adjusting end cap 1 heads on bearing 5 by front regulator plate 2 and moves to the heavy caliber section of bearing housing cone shape hole, and side pressure reduces, be out of shape also littlely, the gap (wedge shape dynamic pressure cavity 23) between rectangle floor 11 corresponding part main shafts 24 and bearing 5 is diminished.The utility model as shown in Figure 4, comprise that front adjusting end cap 1, front regulator plate 2, rear adjusting end cap 7 and aft ramp 6 form, the two ends of bearing housing 4 are all processed with outside thread 16, be all processed with internal thread 18 and match with the outside thread 16 on bearing housing 4 respectively on front adjusting end cap 1 and rear adjusting end cap 7; On bearing 5, be evenly equipped with four taper floors 8, by these four taper floors 8 and the taper fit of bearing housing 4, force bearing 5 to deform, thereby in assembly process, force bearing 5 to form 8 wedge shape dynamic pressure cavity; Front regulator plate 2 and aft ramp 6 play transfer function power and sealing, and by forward and backward adjusting end cap, the screw thread on bearing housing 4 screws power and passes to bearing 5 respectively, thereby 4 floors of bearing and the taper fit area of bearing housing are changed; In addition, front regulator plate 2 and aft ramp 6 form sealing configuration by seal ring 3 and bearing housing 4, prevent that the inner fluid of bearing from flowing out, pressure decreased; The size and shape of 8 wedge shape dynamic pressure cavity that force to form (that is bearing 5 deform degree) is by the determining positions of forward and backward adjusting end cap, by regulating the screw pair between forward and backward adjusting end cap and bearing housing 4 to screw the size that position can regulate bearing 5 distortion, thereby can reach the object of the size and shape that regulates 8 wedge shape dynamic pressure cavity, this routine controlling mechanism can regulate according to the situation of load the runnability of bearing, thereby make the operating conditions scope of bearing wide, adaptable and operational efficiency is high.In addition; on bearing 5, be processed with 4 static pressure chambeies 10; open respectively on the bearing inner wall of each rectangle floor 11 correspondence, the object of offering static pressure chamber 10 is when start, first by bearing housing oil inlet hole 15, in static pressure chamber 10, injects fluid; the main shaft 24 that makes to be arranged in brearing bore floats; thereby the friction while avoiding starting shooting between main shaft 24 and bearing 5, in like manner, when shutting down; under the hydrostatic pressure of static pressure chamber fluid, also can effectively avoid the friction between main shaft 24 and bearing 5.During work, kinetic pressure and static pressure work simultaneously, the outer load of common opposing.Described front regulator plate 2 and aft ramp 6 are provided with seal ring 3.Make whole bearing inside be sealing state, the hydraulic oil of a small amount of seepage can be by being located at oil-through hole 22 on bearing housing 4 two ends outside threads, be located at before and after oil outlet 17 on regulator plate and be located at before and after the oil groove 21 that goes out that covers of adjustable side discharge.Because front and back regulate being threaded between end cap and bearing housing 4, for preventing in adjustment process oil-through hole 22 and going out between oil groove 21 to misplace, there is the situation that oil extraction is not smooth, go out oil groove 21 and can be processed into elongated slot, there is certain containing amount.
Claims (5)
1. an adjustable dynamic and hydrostatic bearing, comprises bearing (5) and is enclosed within the bearing housing (4) of bearing (5) outside, bearing (5) is cylindric; It is characterized in that: the uniform one group of taper floor (8) axially arranging of bearing (5) cylindrical, taper floor (8) is provided with linked hole (9); The endoporus of bearing housing (4) is the cone shape hole (14) identical with taper floor (8) tapering; Bearing housing (4) middle part is provided with bearing housing oil inlet hole (15).
2. dynamic and hydrostatic bearing according to claim 1, is characterized in that: described bearing housing (4) two ends are respectively equipped with outside thread (16), and outside thread (16) is provided with oil-through hole (22); The outside thread (16) at bearing housing (4) two ends respectively with front adjusting end cap (1) and rear adjusting end cap (7) on internal thread (18) be connected; Two to regulate end cap to be circular, and outside is provided with six side's boss (19); The internal thread of annulus (18) locate to be provided with radially arrange go out oil groove (21); Between front adjusting end cap (1) and rear adjusting end cap (7) and bearing (5), be respectively equipped with front regulator plate (2) and aft ramp (6).
3. dynamic and hydrostatic bearing according to claim 2, is characterized in that: described front regulator plate (2) and aft ramp (6) are circular, and annulus is provided with the oil outlet (17) radially arranging; The cylindrical of annulus is provided with seal groove (20), is provided with seal ring (3) in seal groove (20).
4. dynamic and hydrostatic bearing according to claim 3, is characterized in that: the bearing top circle between described taper floor (8) is provided with rectangle floor (11), and the height of rectangle floor (11) is lower than the minimum altitude of taper floor (8); Rectangle floor (11) is provided with bearing oil inlet hole (12), and the bearing inner wall corresponding with bearing oil inlet hole (12) is provided with oil-feed guiding gutter (13), oil-feed guiding gutter (13) closed at both ends, closed end distance between bearing edges at two ends 5-8mm.
5. dynamic and hydrostatic bearing according to claim 4, it is characterized in that: described bearing (5) inwall corresponding with taper floor (8) is provided with static pressure chamber (10), the rectangle groove that static pressure chamber (10) is closed at both ends, width is greater than the width of oil-feed guiding gutter (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706555.9U CN203532527U (en) | 2013-11-11 | 2013-11-11 | Adjustable hybrid bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320706555.9U CN203532527U (en) | 2013-11-11 | 2013-11-11 | Adjustable hybrid bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203532527U true CN203532527U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320706555.9U Expired - Fee Related CN203532527U (en) | 2013-11-11 | 2013-11-11 | Adjustable hybrid bearing |
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| CN (1) | CN203532527U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154121A (en) * | 2014-07-08 | 2014-11-19 | 广西田东南华糖业有限责任公司一糖厂 | Improvement method for bearing bush oil line |
| CN104632892A (en) * | 2013-11-11 | 2015-05-20 | 贵州大学 | Method for adjusting hybrid bearing and hybrid bearing |
| CN105328567A (en) * | 2015-11-27 | 2016-02-17 | 贵州大学 | Structure of adjustable high-speed precise roller grinding head and manufacturing method of structure |
| CN106870562A (en) * | 2017-04-12 | 2017-06-20 | 河海大学常州校区 | A kind of taper dynamic and hydrostatic bearing sub-assembly of diameter of axle surface-texturing |
| CN113833764A (en) * | 2021-10-14 | 2021-12-24 | 江苏集萃精凯高端装备技术有限公司 | Hydrostatic bearing |
-
2013
- 2013-11-11 CN CN201320706555.9U patent/CN203532527U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632892A (en) * | 2013-11-11 | 2015-05-20 | 贵州大学 | Method for adjusting hybrid bearing and hybrid bearing |
| CN104632892B (en) * | 2013-11-11 | 2018-04-27 | 贵州大学 | The adjusting method and dynamic and hydrostatic bearing of a kind of dynamic and hydrostatic bearing |
| CN104154121A (en) * | 2014-07-08 | 2014-11-19 | 广西田东南华糖业有限责任公司一糖厂 | Improvement method for bearing bush oil line |
| CN105328567A (en) * | 2015-11-27 | 2016-02-17 | 贵州大学 | Structure of adjustable high-speed precise roller grinding head and manufacturing method of structure |
| CN106870562A (en) * | 2017-04-12 | 2017-06-20 | 河海大学常州校区 | A kind of taper dynamic and hydrostatic bearing sub-assembly of diameter of axle surface-texturing |
| CN113833764A (en) * | 2021-10-14 | 2021-12-24 | 江苏集萃精凯高端装备技术有限公司 | Hydrostatic bearing |
| CN113833764B (en) * | 2021-10-14 | 2024-02-06 | 江苏集萃精凯高端装备技术有限公司 | Hydrostatic bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20151111 |
|
| EXPY | Termination of patent right or utility model |