CN101550966A - Aqueous suspension bearings - Google Patents
Aqueous suspension bearings Download PDFInfo
- Publication number
- CN101550966A CN101550966A CNA2009100433952A CN200910043395A CN101550966A CN 101550966 A CN101550966 A CN 101550966A CN A2009100433952 A CNA2009100433952 A CN A2009100433952A CN 200910043395 A CN200910043395 A CN 200910043395A CN 101550966 A CN101550966 A CN 101550966A
- Authority
- CN
- China
- Prior art keywords
- bearing
- suspension
- water
- pressure
- aqueous medium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The present invention relates to bearing, comprising two sections of water hydraulic stations and suspension bearing unit, wherein, the suspension bearing unit employs water as suspension medium, the suspension bearing unit contains principal axis, bearing sleeve, bearing wrap, wherein, a water pressure cavity formed between the principal axis and the bearing sleeve, and upon the bearing wrap is arranged with pressure water entrance, upon the bearing sleeve is arranged with aqueous medium channel to communicate with the pressure water entrance, inner side of the bearing sleeve is provided with at least three groups of aqueous medium pressure deep cavity and pressure shallow cavity distributed centering, each group of aqueous medium pressure deep cavity is also provided with inlet throttle ostiole. Because of using shuiji as suspension bearing medium cau effectively reduce resistance of suspension bearing liquid membrane, additionally the shuiji has good heat radiating effect, which can effectively resolve the heat reaidting problem of ultra-high speed suspension bearing and common suspension bearing. The aqueous suspension bearing can widely used in rotating position of precision machine tools principal axis and precision detection device, and principal axis with ultra-high speed high precision request.
Description
Technical field
The present invention relates to a kind of various precision machine tools of machine industry and a kind of bearing of detection facility of being widely used in.
Background technique
Bearing as all kinds of electronic products supporting with the maintenance important mechanical basic part, have frictional force little, be easy to start, raising speed rapidly, compact structure, " three change " (standardization, seriation, generalization) level height, adapt to service behaviour and the long service life that modern various machinery requires and maintain characteristics such as easy, its performance, level and quality have direct influence to the precision and the performance of main frame, are widely used in the every field of national economy.
1772, the C. of a Britain watt Lip river manufactured and designed ball bearing, and was contained on the postal car on probation.1794, the fertile think of of the P. of Britain was obtained the patent of ball bearing.In the middle of the 19th century, Europe is along with the progress of bearing material, oiling agent and manufacturing technology aspect, and beginning has had fairly perfect sliding bearing.1881, the H.R. hertz of Germany was delivered the paper about the ball bearing contact stress.On the basis of hertz achievement, the people such as A. handkerchief nurse Glenn that the R. of Germany executes Trebek, Sweden have carried out a large amount of tests again, and design theory and the Calculation of Fatigue Life that develops rolling bearing contributed.1883, the N.P. Dinko Petrov of Russia was used the friction of newton law of viscosity calculation bearing, and the same year, the B. Bristol of Britain found have oil film pressure to exist during nuclear powered submarine is with bearing when measuring the friction factor of vehicle bearing, and measured the oil film pressure distribution curve.1886, the Reynolds of Britain carried out mathematical analysis to the discovery of Bristol, has derived reynolds equation, had from then on established the basis of hydrldynamic pressure lubrication theory.After the sixties in 20th century, the elastic hydrodynamic lubrication theory is ripe gradually, by this Design Theory rolling bearing is greatly increased in the life-span.
The kind of bearing is a lot, can be divided into by its loading direction that can bear: 1. radial bearing, claim radial bearing again, and bear radial load.2. thrust bearing claims thrust-bearing again, bears thrust load.3. radial-thrust bearing claims radial thrust bearing again, bears radial load and thrust load simultaneously.Frictional property difference by bearing working can be divided into sliding friction bearing (abbreviation sliding bearing) and rolling friction bearing (abbreviation rolling bearing) two big classes.
Traditional rolling body bearing can reach high-revolving requirement, but the precision of main axle unit is difficult to reach high-precision requirement, and can cause the abrasion of rolling element and make the main shaft precise decreasing along with the growth of using, can not satisfy the usage requirement of high speed grinding machine, domestic grinding machine spindle system does not generally adopt this form of rolling bearing at present.
Traditional hydrostatic bearing widespread usage on the main shaft of precision machine tools such as grinding machine, also can satisfy use for general rotating speed and accurate requirement, but the main shaft oil with certain pressure that hydrostatic bearing is provided by hydraulic station makes bearing in running order down, main shaft oil has certain viscosity, heating is serious when working under the state of being stressed, make the working speed of main shaft be subjected to very big restriction, can not satisfy grinding machine high speed and high-precision usage requirement.
Summary of the invention
Purpose of the present invention just provides a kind of medium that adopts the water Ji as suspension bearing, and it can effectively reduce the resistance of suspension bearing liquid film, adds the good heat dissipation effect of water Ji again, can effectively solve the heat dissipation problem of ultra high speed suspension bearing and common suspension bearing.
Technological scheme of the present invention realizes by following approach, aqueous suspension bearings is made of water quality hydraulic station 1 and suspension bearing unit two-part, wherein, the suspension bearing unit adopts water as suspension media, the suspension bearing unit contains main shaft 2, bearing housing 3, bearing outside 4, wherein, surround aqueous medium pressure chamber 7 between main shaft 2 and the bearing housing 3, and bearing outside 4 is provided with press water import 8, bearing housing 3 is provided with the aqueous medium passage 9 that communicates with press water import 8, the inboard of bearing housing 3 is provided with dark chamber 12 of aqueous medium pressure and the shallow chamber 13 of aqueous medium pressure that at least three group centerings distribute, in addition, also be provided with into water throttling pore 14 on the dark chamber 12 of every group of aqueous medium pressure on the bearing housing 3.
The present invention is owing to adopt the medium of water Ji as suspension bearing, and it can effectively reduce the resistance of suspension bearing liquid film, adds the good heat dissipation effect of water Ji again, can effectively solve the heat dissipation problem of ultra high speed suspension bearing and common suspension bearing.With the main shaft diameter is that the aqueous suspension bearings of φ 100mm is an example, has following performance index: 1, the circular runout≤0.002mm of main shaft, axial float≤0.003mm; 2, the radially bearing capacity of main shaft: 500N/ μ, axial carrying capacity: 300N/ μ; 3, spindle speed: 10000～12000 rev/mins; Grinding wheel diameter is φ 400mm, and grinding speed is 200 meter per seconds; 4, the temperature rise of main axle unit system is lower than 25 ℃, and operating temperature is lower than 55 ℃; 5, main axle unit system stability performance is good; 6, help environmental protection and economizing on resources, the water Ji very is beneficial to environmental protection and cost is low, environmentally safe.Aqueous suspension bearings can be widely used in the rotation position of precision machine tool main shaft, precision checking equipment, and the main shaft that the ultra high speed high-precision requirement is arranged.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is embodiment 1 a structural representation.
Fig. 3 is the unfolded drawing of embodiment's 1 aqueous medium pressure chamber.
Fig. 4 is embodiment 2 a structural representation.
Fig. 5 is the structural representation of embodiment's 2 aqueous medium pressure chambers.
Wherein: water quality hydraulic station 1, main shaft 2, bearing housing 3, bearing outside 4, high pressure hose 5, return pipe 6, aqueous medium pressure chamber 7, press water import 8, aqueous medium passage 9, the right chamber 10 of pressure, chamber 11, a pressure left side, the dark chamber 12 of aqueous medium pressure, the shallow chamber 13 of aqueous medium pressure, water inlet throttling pore 14.
Embodiment
Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing.
The present invention develops based on sliding bearing, technical solution of the present invention comprises following three aspects: 1, forcibly the water Ji is sent between the two bearing working surfaces of sliding relatively by means of hydraulic system, utilize the static pressure of water liquid that main shaft is suspended equably, eliminate the mechanical friction that produces when starting; The kinetic pressure that is produced when 2, relying on main axis rotation makes system have bigger bearing capacity and has that rotating accuracy height, rigidity are big, the characteristics of good anti-vibration; 3, making full use of the little and good thermal diffusivity of water liquid friction factor is aided with refrigeration and has dealt with main shaft in time cooling problem more than 6000 rev/mins.
As shown in Figure 1, the present invention is made of water quality hydraulic station 1 and suspension bearing unit two-part, wherein, the suspension bearing unit adopts water as suspension media, and in water, add anticorrosion and sludge proof additive, be can be water-soluble for the requirement of additive, and do not produce precipitation.The suspension bearing unit contains main shaft 2, bearing housing 3, bearing outside 4, wherein, surround aqueous medium pressure chamber 7 between main shaft 2 and the bearing housing 3, gap length is 0.015～0.06 millimeter, and bearing outside 4 is provided with press water import 8, bearing housing 3 is provided with the aqueous medium passage 9 that communicates with press water import 8, as shown in Figure 3, the inboard of bearing housing 3 is provided with dark chamber 12 of aqueous medium pressure and the shallow chamber 13 of aqueous medium pressure that at least three group centerings distribute, in addition, also be provided with into water throttling pore 14 on the dark chamber 12 of every group of aqueous medium pressure on the bearing housing 3.Water inlet throttling pore 14 communicates with the dark chamber 12 of aqueous medium pressure.
Be that example is described in detail with radial bearing and cod below.
Fig. 2 is that the working principle of aqueous suspension radial bearing structural drawing (embodiment 1), this aqueous suspension bearings is: the water Ji adds pump by water tank and produces pressure, coarse-grain filtering device is arranged before the pump, there is fine filter that aqueous medium is carried out double-filtration behind the pump and guarantees the aqueous medium no-sundries, and in water, add the additive in anticorrosion and dustproof shallow lake, requirement for additive is can be water-soluble, and does not produce precipitation.Press water offers aqueous suspension bearings overcoat 4 water intakes after through relief valve system pressure being adjusted, water channel 9 and throttle orifice 14 through 3 of bearing outside 4 and bearing housings enters aqueous medium pressure chamber 7 again, main shaft 2 is suspended in the bearing housing 3 and the formation aqueous suspension bearings.Main shaft 2 is suspended in the bearing housing 3, float-amount is greater than 0.006mm, when main shaft 2 is turned at outside force effect backspin, in the aqueous medium pressure chamber of aqueous suspension bearings, form dynamic pressure, the radial accuracy of main shaft 2 is beated≤0.002mm, when high rotating speed, can reach running accuracy 0.0005mm, main shaft 2 is 0.015～0.06mm with the endoporus matching gap of bearing housing 3, it is dark, the structure of shallow pressure chamber is seen shown in Figure 3, deeply, shallow pressure chamber is formed by being no less than three groups, determine according to the size of shaft diameter and the rotating speed of axle, the degree of depth in the dark chamber 12 of pressure is 0.2～1mm, the degree of depth in the shallow chamber 13 of pressure is 0.015～0.035mm, the length in chamber lacks 8～20mm than the length of bearing and centering distributes, also be provided with into water throttling pore 14 on the dark chamber 12 of every group of aqueous medium pressure on the bearing housing 3, pressure water inlet throttling pore 14 is 0.5～2.5mm.
Fig. 4 is an aqueous suspension cod structural representation (embodiment 2).The axial precision of main shaft 2 is beated≤0.003mm, the matching gap of the cod and the shaft shoulder is 0.015～0.08, and the structure of its pressure chamber is seen Fig. 5, and the width of pressure chamber is 1～20mm, the degree of depth of pressure chamber is 0.2～1mm, and pressure water inlet throttling pore is 0.5～2.5mm; By the mobile a large amount of heat energy that produce in the main axis rotation process of taking away of press water medium, main shaft is suspended and the energy proper functioning.
Claims (6)
1, a kind of aqueous suspension bearings is made of water quality hydraulic station (1) and suspension bearing unit two-part, it is characterized in that:
A) the suspension bearing unit adopts water as suspension media;
B) the suspension bearing unit contains main shaft (2), bearing housing (3), bearing outside (4), wherein, surround aqueous medium pressure chamber (7) between main shaft (2) and the bearing housing (3), and bearing outside (4) is provided with press water import (8), bearing housing (3) is provided with the aqueous medium passage (9) that communicates with press water import (8), the inboard of bearing housing (3) is provided with dark chamber of aqueous medium pressure (12) and the shallow chamber of aqueous medium pressure (13) that at least three group centerings distribute, in addition, also be provided with into water throttling pore (14) on the every group of dark chamber of aqueous medium pressure (12) on the bearing housing (3).
2, a kind of aqueous suspension bearings according to claim 1 is characterized in that, the gap between described main shaft (2) and the bearing housing (3) is 0.015～0.06 millimeter.
3, a kind of aqueous suspension bearings according to claim 1 is characterized in that, the degree of depth in the dark chamber 12 of described pressure is 0.2～1 millimeter.
4, a kind of aqueous suspension bearings according to claim 1 is characterized in that, the degree of depth in the shallow chamber 13 of described pressure is 0.015～0.035 millimeter.
5, a kind of aqueous suspension bearings according to claim 1 is characterized in that, the size of described water inlet throttling pore (14) is 0.5～2.5mm.
6, a kind of aqueous suspension bearings according to claim 1 is characterized in that, adds anticorrosion and sludge proof additive in described suspension media water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100433952A CN101550966A (en) | 2009-05-14 | 2009-05-14 | Aqueous suspension bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100433952A CN101550966A (en) | 2009-05-14 | 2009-05-14 | Aqueous suspension bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101550966A true CN101550966A (en) | 2009-10-07 |
Family
ID=41155386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100433952A Pending CN101550966A (en) | 2009-05-14 | 2009-05-14 | Aqueous suspension bearings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101550966A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533887A (en) * | 2014-12-10 | 2015-04-22 | 马继刚 | Method of utilizing hydraulic servo principle for conducting hydraulic suspension on shaft parts |
| CN104533952A (en) * | 2014-12-10 | 2015-04-22 | 马继刚 | Self-regulating hydraulic suspension method |
| CN114635920A (en) * | 2020-12-15 | 2022-06-17 | 中国科学院宁波材料技术与工程研究所 | Suspension bearing, control method and application thereof |
-
2009
- 2009-05-14 CN CNA2009100433952A patent/CN101550966A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533887A (en) * | 2014-12-10 | 2015-04-22 | 马继刚 | Method of utilizing hydraulic servo principle for conducting hydraulic suspension on shaft parts |
| CN104533952A (en) * | 2014-12-10 | 2015-04-22 | 马继刚 | Self-regulating hydraulic suspension method |
| CN114635920A (en) * | 2020-12-15 | 2022-06-17 | 中国科学院宁波材料技术与工程研究所 | Suspension bearing, control method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103111855B (en) | Large-diameter-height-ratio ultra-precision hydrostatic pressure rotary table | |
| CN103286679A (en) | Super high speed air bearing electric main shaft | |
| CN106644480B (en) | Film in Tilting Pad Bearings lubrication property development test platform | |
| CN202591627U (en) | Spindle device for hydrodynamic journal bearing | |
| CN110096784A (en) | A kind of quick calculating and design method of the bush(ing) bearing with axial pressure difference | |
| CN101550966A (en) | Aqueous suspension bearings | |
| Liang et al. | Friction and wear study on friction pairs with a biomimetic non-smooth surface of 316L relative to CF/PEEK under a seawater lubricated condition | |
| CN201412451Y (en) | Water suspended bearing | |
| CN201461739U (en) | Dynamic-static hybrid oil film bearing | |
| CN102632257B (en) | Spindle device for hydrodynamic journal bearing | |
| CN203305052U (en) | Ultrahigh-speed air-bearing electric spindle | |
| CN101586619A (en) | Sliding-rolling composite bearing device | |
| CN102814733A (en) | Large-size end surface processing electric spindle for mixed support of hydrostatic bearing and rolling bearing | |
| CN101557136A (en) | High speed electric principal axis | |
| CN102490065A (en) | Static combined bearing for screw rod | |
| CN102588437B (en) | Excircle cavity opening type dynamic-static pressure main shaft unit | |
| CN203257885U (en) | Sliding bearing with pressure maintaining ring | |
| CN109128224A (en) | High speed water-lubricated dynamic spiral grooved bearing electro spindle | |
| LI et al. | Lubrication Analysis of Plain Journal Bearings Considering Axial Motion of Journal | |
| CN204921698U (en) | Full static pressure base bearing of liquid of ball mill | |
| CN109781409B (en) | Device capable of realizing ultrahigh-speed liquid film shearing characteristic and hydrostatic bearing characteristic test | |
| CN203019215U (en) | Hydrostatic bearing spindle device and grinding machine | |
| CN205036620U (en) | Lubricated ceramic bearing structure of corrosion -resistant pump water | |
| CN205552260U (en) | Main shaft supporting system of grinding superfinish equipment | |
| CN2936579Y (en) | Static pressure heavy load driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091007 |