CN206883437U - A kind of main shaft supporting structure for high hydrostatic pressure main shaft - Google Patents
A kind of main shaft supporting structure for high hydrostatic pressure main shaft Download PDFInfo
- Publication number
- CN206883437U CN206883437U CN201720189642.XU CN201720189642U CN206883437U CN 206883437 U CN206883437 U CN 206883437U CN 201720189642 U CN201720189642 U CN 201720189642U CN 206883437 U CN206883437 U CN 206883437U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- bearing shell
- oil
- outer sleeve
- hydrostatic pressure
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of main shaft supporting structure for high hydrostatic pressure main shaft, high hydrostatic pressure main shaft includes outer sleeve, main shaft, bearing shell, the oil groove of some indents is offered on the inwall of the bearing shell, offer and connected with inner chamber and a diameter of 0.6mm aperture on watt wall of bearing shell, there is gap between main shaft and the inwall of bearing shell, the oil charging structure that hydraulic oil is introduced to bearing shell inner chamber through aperture is offered on the barrel of outer sleeve.The rotating accuracy that the utility model is greatly improved whole main shaft for the main shaft supporting structure of high hydrostatic pressure main shaft is high and rigid, increases the service life.
Description
Technical field
A kind of grinding wheel spindle technical field is the utility model is related to, is especially a kind of main shaft for high hydrostatic pressure main shaft
Supporting construction.
Background technology
Main shaft is the important component on lathe, for installing emery wheel and driving emery wheel rotation to add to be ground to product
Work.For the main shaft of prior art due to being limited by main shaft supporting structure, rotating accuracy and rigidity be not high.General revolution essence
Between degree can only achieve 0.5~1.0 μm, mill run can only be processed, and can not meet that some are high to required precision
Product.
In order to solve the above problems, this case is given birth to therefrom.
The content of the invention
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of main shaft for high hydrostatic pressure main shaft
Supporting construction, the rotating accuracy height and rigidity of whole main shaft are greatly improved by the main shaft supporting structure, is increased the service life.
To achieve these goals, the technical solution of the utility model is as follows：A kind of main shaft for high hydrostatic pressure main shaft
Supporting construction, high hydrostatic pressure main shaft include outer sleeve, main shaft, bearing shell, and the oil of some indents is offered on the inwall of the bearing shell
Groove, offer on watt wall of bearing shell and connected with inner chamber and a diameter of 0.6mm aperture, between having between main shaft and the inwall of bearing shell
Gap, the oil charging structure that hydraulic oil is introduced to bearing shell inner chamber through aperture is offered on the barrel of outer sleeve.
Further, the oil charging structure includes fuel feed hole one, fuel feed hole two, oil inlet passage, and fuel feed hole one is opened in outer
On sleeve outer wall, fuel feed hole two is opened on outer sleeve inwall and is oppositely arranged with the aperture on bearing shell, and oil inlet passage is opened in
The barrel of outer sleeve is interior and connects fuel feed hole one and fuel feed hole two.
Further, circumferencial direction of the oil groove along bearing shell is angularly uniformly distributed.
After adopting the above technical scheme, the utility model is compared with prior art, there is advantages below：The utility model is used
, it is necessary to be passed through hydraulic oil when the main shaft supporting structure of high hydrostatic pressure main shaft, work, hydraulic oil by aperture enter bearing shell after meeting
Becoming hydraulic oil, and enter in oil groove, one layer of oil film is formed between bearing shell and main shaft, main shaft can be suspended by the oil film,
So that main shaft does not contact with bearing shell, main shaft is suspended thus by fluid, the frictional force of main shaft and bearing shell is zero, can be significantly
Rotating accuracy is improved, and service life is grown；Meanwhile the main shaft supported by hydraulic oil has high rigidity.
Brief description of the drawings
Fig. 1 is the sectional view that the utility model is installed on high hydrostatic pressure main shaft.
Fig. 2 is the structural representation of the utility model intermediate bushing.
Shown in figure：1st, outer sleeve 2, main shaft 3, bearing shell 4, oil groove 5, aperture 6, fuel feed hole 1, fuel feed hole two
8th, oil inlet passage 9, annular groove 10, axial passage 11, oil discharge outlet.
Embodiment
The utility model is further elaborated below by drawings and examples.
As depicted in figs. 1 and 2：A kind of main shaft supporting structure for high hydrostatic pressure main shaft, high hydrostatic pressure main shaft include outer
Sleeve 1, main shaft 2, bearing shell 3.Bearing shell 3 is installed on the end of the inner chamber of outer sleeve 1.Main shaft 2 is arranged in the inner chamber of bearing shell 3.Bearing shell 3
Inwall on offer some indents and along the circumferencial direction angularly equally distributed oil groove 4 of bearing shell 3.Watt wall of bearing shell 3
On offer and connected with inner chamber and a diameter of 0.6 mm aperture 5.The diameter of aperture 5 is very small, and aperture 5 is also known as guillotine,
Play a part of supercharging.After hydraulic oil enters 3 inner chamber of bearing shell from the aperture 5, hydraulic oil can become hydraulic oil.Main shaft 2 and axle
There is small gap between watts 3 inwall.Offered on the barrel of outer sleeve 1 and hydraulic oil is introduced into the inner chamber of bearing shell 3 through aperture 5
Oil charging structure.
Oil charging structure includes fuel feed hole 1, fuel feed hole 27, oil inlet passage 8.Fuel feed hole 1 is opened in the outer wall of outer sleeve 1
On, fuel feed hole 27 is opened on the inwall of outer sleeve 1 and is oppositely arranged with the aperture 5 on bearing shell 3, and oil inlet passage 8 is opened in overcoat
The barrel of cylinder 1 is interior and connects fuel feed hole 1 and fuel feed hole 27.Fuel feed hole 1, oil inlet passage 8, fuel feed hole 27 and aperture 5
Form a complete oil inlet passage.Hydraulic oil is passed through from fuel feed hole 1, successively by oil inlet passage 8, fuel feed hole 27, small
Hole 5 is flowed into the inner chamber of bearing shell 3, and then is flowed into oil groove 4.It is so designed that, it is only necessary to several holes are opened on outer sleeve 1 and can be achieved
Oil-feed, simple in construction, oil-feed is smooth, will not block.
Hydraulic oil enters the inner chamber of bearing shell 3 by above oil inlet passage, and one layer of oil film is formed between bearing shell 3 and main shaft 2,
A complete technical scheme is formd.Hydraulic oil is entered after bearing shell 3 by aperture 5 can become hydraulic oil, and enter oil
In groove 4, one layer of oil film is formed between bearing shell 3 and main shaft 2, main shaft 2 can be suspended by the oil film so that main shaft 2 and bearing shell 3
Do not contact, main shaft 2 suspends thus by fluid, the frictional force of main shaft 2 and bearing shell 3 is zero, is greatly improved revolution essence
Degree, specific rotating accuracy are very high up to next product circularity within 0.2 μm, is ground；Meanwhile the main shaft supported by hydraulic oil
2 have high rigidity.
In addition, the invention also discloses a kind of oil-returning structure for hydraulic oil to be drawn from the inner chamber of bearing shell 3.Its
Concrete structure is：The outside that the inwall of bearing shell 3 is located at oil groove 4 offers annular groove 9.A watt pars intramuralis for bearing shell 3 is provided with some axles
To passage 10.One end of axial passage 10 connects with annular groove 9, inner face and outer sleeve 1 of the other end through 3 watts of walls of bearing shell
Inner chamber connects.The oil discharge outlet 11 connected with inner chamber is offered on the barrel of outer sleeve 1.Annular groove 9, axial passage 10, outer sleeve 1
Inner chamber and oil discharge outlet 11 form a wherein complete drainback passage.As not stalling for main shaft 2 is dynamic, positioned at bearing shell 3
Hydraulic oil in inner chamber can be automatically flowed into annular groove 9, and is flowed into by axial passage 10 in the inner chamber of outer sleeve 1, most
Discharged eventually by oil discharge outlet 11.
Foundation embodiment described above is enlightenment, and by above-mentioned description, relevant staff completely can be not
In the range of deviateing this invention thought, various changes and amendments are carried out.The technical scope of this item utility model is not
The content being confined on specification, it is necessary to which its scope protected is determined according to right.
Claims (3)
1. a kind of main shaft supporting structure for high hydrostatic pressure main shaft, high hydrostatic pressure main shaft includes outer sleeve, main shaft, bearing shell, its
It is characterised by：The oil groove of some indents is offered on the inwall of the bearing shell, offered on watt wall of bearing shell connected with inner chamber and
There is gap between the inwall of a diameter of 0.6mm aperture, main shaft and bearing shell, offered on the barrel of outer sleeve and pass through hydraulic oil
Aperture introduces the oil charging structure of bearing shell inner chamber；Also include being used for the oil-returning structure for drawing hydraulic oil from bearing shell inner chamber；It is described
Oil-returning structure includes annular groove, and annular groove is opened in the outside that bearing shell inwall is located at oil groove；Watt pars intramuralis of the bearing shell is set
There are some axial passages, one end of axial passage connects with annular groove, and the other end runs through the inner face and outer sleeve of bearing shell watt wall
Inner chamber connection；The oil discharge outlet connected with inner chamber is offered on the barrel of the outer sleeve.
A kind of 2. main shaft supporting structure for high hydrostatic pressure main shaft according to claim 1, it is characterised in that：It is described enter
Oily structure includes fuel feed hole one, fuel feed hole two, oil inlet passage, and fuel feed hole one is opened on overcoat drum outer wall, and fuel feed hole two opens up
It is oppositely arranged on outer sleeve inwall and with the aperture on bearing shell, oil inlet passage is opened in the barrel of outer sleeve and connection oil-feed
Kong Yiyu fuel feed holes two.
A kind of 3. main shaft supporting structure for high hydrostatic pressure main shaft according to claim 1, it is characterised in that：The oil
Circumferencial direction of the groove along bearing shell is angularly uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720189642.XU CN206883437U (en) | 2017-03-01 | 2017-03-01 | A kind of main shaft supporting structure for high hydrostatic pressure main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720189642.XU CN206883437U (en) | 2017-03-01 | 2017-03-01 | A kind of main shaft supporting structure for high hydrostatic pressure main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206883437U true CN206883437U (en) | 2018-01-16 |
Family
ID=61328548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720189642.XU Expired - Fee Related CN206883437U (en) | 2017-03-01 | 2017-03-01 | A kind of main shaft supporting structure for high hydrostatic pressure main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206883437U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405231A (en) * | 2019-08-08 | 2019-11-05 | 章杰 | Precise hydraulic lathe spindle |
-
2017
- 2017-03-01 CN CN201720189642.XU patent/CN206883437U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110405231A (en) * | 2019-08-08 | 2019-11-05 | 章杰 | Precise hydraulic lathe spindle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104227032B (en) | Air-floated high-speed motorized spindle | |
| CN103016531B (en) | Friction-free rotary air supply air flotation device | |
| CN202591627U (en) | Spindle device for hydrodynamic journal bearing | |
| CN102486208A (en) | Self-compensating hydrostatic journal bearing | |
| CN102172877B (en) | Grinding device for high-precision ultrathin wafer | |
| CN206883437U (en) | A kind of main shaft supporting structure for high hydrostatic pressure main shaft | |
| CN105952798A (en) | High-precision static pressure air bearing | |
| CN2719455Y (en) | High-speed electric main spindle of hydrostatic-hydrodynamic bearing | |
| CN206544106U (en) | A kind of cantilevered is combined high hydrostatic pressure main shaft | |
| CN103216406A (en) | Pump and motor all-in-one bulb stopper hydraulic pump capable of distributing oil by oil distribution disc | |
| CN102528631B (en) | Floating centrifugal deep-hole polishing device | |
| CN208089765U (en) | A kind of tilting bush sliding bearing | |
| CN206544104U (en) | A kind of dual-gripper is combined high hydrostatic pressure main shaft | |
| CN207293412U (en) | Conveying roller mechanism for automatic supplyline | |
| CN206159474U (en) | Mechanical seal device | |
| CN110274004A (en) | The lubricating oil supply structure of speed changer | |
| CN214490157U (en) | Dynamic pressure main shaft | |
| CN206845696U (en) | A kind of floating bearing of turbo-charger | |
| CN106826547A (en) | A kind of cantilevered is combined hydrostatic pressure main shaft high | |
| CN106163668A (en) | Sedimentation-type centrifuge | |
| CN107120352A (en) | A kind of electro spindle dynamic and hydrostatic bearing with the annular oil supply tank of square shape | |
| CN106402151A (en) | Combined bearing and rotating shaft device using combined bearing | |
| CN104929697A (en) | Axial flow turbine capable of adjusting flow speed of fluid | |
| CN104632892B (en) | The adjusting method and dynamic and hydrostatic bearing of a kind of dynamic and hydrostatic bearing | |
| CN206925145U (en) | Split type centrifugal compound roll |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180116 Termination date: 20190301 |