CN202441722U - Dynamic/static pressure spindle unit with cavities on outer cylindrical surface - Google Patents
Dynamic/static pressure spindle unit with cavities on outer cylindrical surface Download PDFInfo
- Publication number
- CN202441722U CN202441722U CN2012200562842U CN201220056284U CN202441722U CN 202441722 U CN202441722 U CN 202441722U CN 2012200562842 U CN2012200562842 U CN 2012200562842U CN 201220056284 U CN201220056284 U CN 201220056284U CN 202441722 U CN202441722 U CN 202441722U
- Authority
- CN
- China
- Prior art keywords
- oil
- static pressure
- pressure main
- active
- dynamic
- 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.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model provides a dynamic and static pressure spindle unit with a cavities on an outer cylindrical surface, which comprises a dynamic/static pressure spindle, a dynamic/static pressure bearing and an oil supply system, wherein a plurality of oil cavities which are uniformly distributed in the circumferential direction are formed on an excircle cylindrical surface of the shaft neck of the dynamic/static pressure spindle. The dynamic and static pressure spindle unit has the following advantages: because the dynamic/static pressure spindle is made of steel, the oil cavities are more conveniently formed on the outer cylindrical surface of the dynamic/static pressure spindle than on the inner wall of the dynamic/static pressure bearing and are easily machined, so that the machining difficulty is greatly reduced, the cost is saved, and the labor productivity is improved; and moreover, the dynamic and static pressure spindle unit has the original advantages of the traditional dynamic/static pressure spindle unit, such as low static pressure support driving power; moreover, the starting power loss is reduced, the service life of the bearing is prolonged, and the reliability and overload resistance of the bearing are improved.
Description
Technical field
The utility model relates to a kind of active and static pressure main axle unit, relates in particular to a kind of cylindrical formula active and static pressure main axle unit of beginning to speak.
Background technique
The hydrodynamic and hydrostatic pressure combined bearing is that China grows up have world-class new high-tech product the eighties, is a kind of advantage that had both combined hydraulic bearing and hydrostatic bearing, overcomes the novel movable bearing of the two shortcoming again.Both can be used for old machine reformation, it is supporting also to can be used for new machine.Adopt dynamic and hydrostatic bearing can recover Seiko precision and the surface roughness that lathe is lost because of the main shaft bearing problem fully; Improve machine tool chief axis precision and cutting rate.For many years some enterprises of China adopt dynamic and hydrostatic bearings be new machine supporting with carry out the old machine tool transformation of domestic and imported, all obtained satisfied using effect and remarkable economic efficiency.
The active and static pressure main axle unit structure of existing technology comprises main shaft, bearing and oil supplying device; The outer surface of main shaft axle journal is level and smooth cylndrical surface; Bearing inner wall offers some oil pockets that circumferentially are uniformly distributed with; Also offer the oil-feed aperture on the bearing, oil supplying device is through the direct fuel feeding in oil pocket of oil-feed aperture, and the oil in the bearing is back in the fuel tank through the slit at bearing two ends.
But; Because dynamic and hydrostatic bearing processing is difficulty relatively, has following technological difficulties: it is the softer thin-walled copper sheathing of material that the property of (1) active and static pressure main axle unit requires bearing, in copper sheathing, opens several oil pockets on the circle; But the material of copper is very soft and wall thin; Clamping easy deformation during processing is difficult to guarantee figure tolerance and the positioning tolerance between each chamber, and internal-external circle concentricity and endoporus circularity; (2) the aperture oil-feed that will on accurate position, bore 0.6-1mm on the copper sheathing cylindrical, difficult processing of aperture and position are difficult for guaranteeing.
The model utility content
The purpose of the utility model is to provide a kind of cylindrical that keeps the original performance of dynamic and hydrostatic bearing and be easy to process formula active and static pressure main axle unit of beginning to speak.
The utility model is realized through following measure: the cylindrical formula active and static pressure main axle unit of beginning to speak, comprise active and static pressure main shaft, dynamic and hydrostatic bearing and oil supply system, and wherein, the axle journal external cylindrical surface of said active and static pressure main shaft is provided with the oil pocket that several circumferentially are uniformly distributed with.
Said oil pocket is made up of dark chamber and shallow chamber, and the radial cross section that said dark chamber and said shallow chamber form is a ladder-type.
Said active and static pressure main shaft is provided with the axial fuel inlet hole, and the axle journal of said active and static pressure main shaft is provided with the radially oil outlet that communicates with said axial fuel inlet hole, and said radially oil outlet communicates with said shallow chamber.
Said oil supply system comprises oil supplying device, fuel supply line, oil return fuel tank and return tube; Said oil supplying device is connected with the single-revolution joint through said fuel supply line; Said swivel coupling is communicated with said axial fuel inlet hole, and said oil return fuel tank covers on said active and static pressure main shaft and the said dynamic and hydrostatic bearing, and said oil return fuel tank is connected with said oil supplying device through return tube; Said oil return fuel tank two ends are provided with Sealing, and the inwall of said oil return fuel tank bottom is provided with back oil road.
Between said oil pocket, also be provided with axial oil-return groove on the external cylindrical surface of said active and static pressure main shaft axle journal.
The beneficial effect of the utility model is: because the active and static pressure main shaft is a steel; On the external cylindrical surface of active and static pressure main shaft, offer oil pocket and begin to speak than on the dynamic and hydrostatic bearing inwall conveniently to be easy to processing, greatly reduce difficulty of processing like this; Practice thrift cost, improved labour productivity; Not only have advantages such as the traditional original static pressure support drive of active and static pressure main axle unit power is little, reduced simultaneously and started power consumption and the working life of having improved bearing, the reliability of bearing and anti-overload ability are increased.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation.
Fig. 2 is the structural representation of active and static pressure main shaft among the utility model embodiment.
Fig. 3 is the structural representation of dynamic and hydrostatic bearing among the utility model embodiment.
Wherein, reference character is: 1, oil supplying device; 2, fuel supply line; 3, swivel coupling; 4, dynamic and hydrostatic bearing; 5, Sealing; 6, oil outlet radially; 7, axial fuel inlet hole; 8, active and static pressure main shaft; 9, back oil road; 10, oil return fuel tank; 11, return tube; 12, shallow chamber; 13, dark chamber; 14, oil-return groove.
Embodiment
For clearly demonstrating the technical characterstic of this programme, through embodiment, this programme is set forth below.
Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model is the cylindrical formula active and static pressure main axle unit of beginning to speak, and comprises active and static pressure main shaft 8, dynamic and hydrostatic bearing 4 and oil supply system, and wherein, the axle journal external cylindrical surface of active and static pressure main shaft 8 is provided with the oil pocket that several circumferentially are uniformly distributed with; Oil pocket is made up of with shallow chamber 12 dark chamber 13, and dark chamber 13 is a ladder-type with the radial cross section that shallow chamber 12 forms; Active and static pressure main shaft 8 is provided with axial fuel inlet hole 7, and the axle journal of active and static pressure main shaft 8 is provided with the radially oil outlet 6 that communicates with axial fuel inlet hole 7, and radially oil outlet 6 communicates with shallow chamber 12; Oil supply system comprises oil supplying device 1, fuel supply line 2, oil return fuel tank 10 and return tube 11; Oil supplying device 1 is connected with single-revolution joint 3 through fuel supply line 2; Swivel coupling 3 is communicated with axial fuel inlet hole 7, and oil return fuel tank 10 covers on active and static pressure main shaft 8 and the dynamic and hydrostatic bearing 4, and oil return fuel tank 10 is connected with oil supplying device 1 through return tube 11; Oil return fuel tank 10 two ends are provided with Sealing 5, and the inwall of oil return fuel tank 10 bottoms is provided with back oil road 9; Between oil pocket, also be provided with axial oil-return groove 14 on the external cylindrical surface of active and static pressure main shaft 8 axle journals; Also be provided with back oil road 9 on the oil return fuel tank 10.
Before main axle unit starts, in the oil pocket of active and static pressure main shaft 8, inject the lubricant oil of certain pressure by oil supplying device 1 through swivel coupling 3 and axial fuel inlet hole 7, active and static pressure main shaft 8 axle journals are floated by one deck pressure oil film; After the startup; Make and form dynamic pressure carrying oil film naturally between axle journal and the dynamic and hydrostatic bearing 4 of active and static pressure main shaft 8 because dark chamber 13 on the axle journal and shallow chamber 12 produce alias; The slit of oil through oil-return groove 14 and dynamic and hydrostatic bearing 4 two ends is in back oil road 9 flows back to oil return fuel tank 10; Oil return fuel tank 10 is sent oil back to oil supplying device 1 through return tube 11, makes its circulation fuel feeding.
The above is merely the preferred embodiment of the utility model, and is in order to restriction the utility model, not all within the spirit and principle of the utility model, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. the cylindrical formula active and static pressure main axle unit of beginning to speak comprises active and static pressure main shaft, dynamic and hydrostatic bearing and oil supply system, it is characterized in that the axle journal external cylindrical surface of said active and static pressure main shaft is provided with the oil pocket that several circumferentially are uniformly distributed with.
2. the cylindrical according to claim 1 formula active and static pressure main axle unit of beginning to speak is characterized in that said oil pocket is made up of dark chamber and shallow chamber, and the radial cross section that said dark chamber and said shallow chamber form is a ladder-type.
3. the cylindrical according to claim 1 and 2 formula active and static pressure main axle unit of beginning to speak; It is characterized in that; Said active and static pressure main shaft is provided with the axial fuel inlet hole; The axle journal of said active and static pressure main shaft is provided with the radially oil outlet that communicates with said axial fuel inlet hole, and said radially oil outlet communicates with said shallow chamber.
4. the cylindrical according to claim 1 and 2 formula active and static pressure main axle unit of beginning to speak; It is characterized in that; Said oil supply system comprises oil supplying device, fuel supply line, oil return fuel tank and return tube, and said oil supplying device is connected with the single-revolution joint through said fuel supply line, and said swivel coupling is communicated with said axial fuel inlet hole; Said oil return fuel tank covers on said active and static pressure main shaft and the said dynamic and hydrostatic bearing; Said oil return fuel tank is connected with said oil supplying device through return tube, and said oil return fuel tank two ends are provided with Sealing, and the inwall of said oil return fuel tank bottom is provided with back oil road.
5. the cylindrical according to claim 3 formula active and static pressure main axle unit of beginning to speak; It is characterized in that; Said oil supply system comprises oil supplying device, fuel supply line, oil return fuel tank and return tube, and said oil supplying device is connected with the single-revolution joint through said fuel supply line, and said swivel coupling is communicated with said axial fuel inlet hole; Said oil return fuel tank covers on said active and static pressure main shaft and the said dynamic and hydrostatic bearing; Said oil return fuel tank is connected with said oil supplying device through return tube, and said oil return fuel tank two ends are provided with Sealing, and the inwall of said oil return fuel tank bottom is provided with back oil road.
6. the cylindrical according to claim 1 and 2 formula active and static pressure main axle unit of beginning to speak is characterized in that, between said oil pocket, also is provided with axial oil-return groove on the external cylindrical surface of said active and static pressure main shaft axle journal.
7. the cylindrical according to claim 3 formula active and static pressure main axle unit of beginning to speak is characterized in that, between said oil pocket, also is provided with axial oil-return groove on the external cylindrical surface of said active and static pressure main shaft axle journal.
8. the cylindrical according to claim 4 formula active and static pressure main axle unit of beginning to speak is characterized in that, between said oil pocket, also is provided with axial oil-return groove on the external cylindrical surface of said active and static pressure main shaft axle journal.
9. the cylindrical according to claim 5 formula active and static pressure main axle unit of beginning to speak is characterized in that, between said oil pocket, also is provided with axial oil-return groove on the external cylindrical surface of said active and static pressure main shaft axle journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200562842U CN202441722U (en) | 2012-02-21 | 2012-02-21 | Dynamic/static pressure spindle unit with cavities on outer cylindrical surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200562842U CN202441722U (en) | 2012-02-21 | 2012-02-21 | Dynamic/static pressure spindle unit with cavities on outer cylindrical surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202441722U true CN202441722U (en) | 2012-09-19 |
Family
ID=46823174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200562842U Withdrawn - After Issue CN202441722U (en) | 2012-02-21 | 2012-02-21 | Dynamic/static pressure spindle unit with cavities on outer cylindrical surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202441722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588437A (en) * | 2012-02-21 | 2012-07-18 | 山东博特精工股份有限公司 | Excircle cavity opening type dynamic-static pressure main shaft unit |
| CN111623038A (en) * | 2020-07-06 | 2020-09-04 | 德本恒嘉精机(昆山)有限公司 | Ultrahigh-precision hydrostatic bearing |
-
2012
- 2012-02-21 CN CN2012200562842U patent/CN202441722U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588437A (en) * | 2012-02-21 | 2012-07-18 | 山东博特精工股份有限公司 | Excircle cavity opening type dynamic-static pressure main shaft unit |
| CN102588437B (en) * | 2012-02-21 | 2015-04-08 | 山东博特精工股份有限公司 | Excircle cavity opening type dynamic-static pressure main shaft unit |
| CN111623038A (en) * | 2020-07-06 | 2020-09-04 | 德本恒嘉精机(昆山)有限公司 | Ultrahigh-precision hydrostatic bearing |
| CN111623038B (en) * | 2020-07-06 | 2023-08-29 | 德本恒嘉精机(昆山)有限公司 | Ultra-high precision hydrostatic bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103111855B (en) | Large-diameter-height-ratio ultra-precision hydrostatic pressure rotary table | |
| CN103846459B (en) | A kind of electro spindle of dynamic and static pressure integrated gas bearing supporting | |
| CN102588437B (en) | Excircle cavity opening type dynamic-static pressure main shaft unit | |
| CN201944119U (en) | Static-pressure bearing with internal-feedback throttling return oil | |
| CN104014823A (en) | Electric spindle of bidirectional herringbone groove hydrodynamic/hydrostatic integrated gas bearing support | |
| CN202441722U (en) | Dynamic/static pressure spindle unit with cavities on outer cylindrical surface | |
| CN202597481U (en) | Rolling body oil storage self-lubricating bearing | |
| CN103115070B (en) | A kind of brass entity aligning roller bearing retainer and forming method | |
| CN203926401U (en) | With the hydrostatic spindle of hydraulic clamp | |
| CN203887691U (en) | Grinding wheel spindle structure | |
| CN102513555A (en) | High-speed and high-rigidity main shaft system rotary support structure | |
| CN102266952B (en) | High-precision high-rigidity large-torque hydrostatic piezoelectric spindle | |
| RU2465986C1 (en) | Spindle assembly | |
| CN101804471B (en) | Special machine tool and method for boring double-support hole of spinning spindle elastic pipe combining member | |
| CN202017703U (en) | Connecting sleeve | |
| CN202224662U (en) | Hydrostatic-pressure electric main shaft with high precision, high rigidity and large torque | |
| CN205341946U (en) | Telescopic main shaft of static and dynamic pressure | |
| CN202367214U (en) | Pivoting support structure of high-speed and high-rigidity main shaft system | |
| CN202155559U (en) | Special borer for thin-wall sleeves | |
| CN202946536U (en) | Detachment structure for large-sized joint bearing | |
| CN203418180U (en) | Accurate-positioning bearing bush inner side face processing device | |
| CN203019215U (en) | Hydrostatic bearing spindle device and grinding machine | |
| CN202291433U (en) | Multi-purpose elastic movable thimble | |
| CN205552260U (en) | Main shaft supporting system of grinding superfinish equipment | |
| CN2936579Y (en) | Static pressure heavy load driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120919 Effective date of abandoning: 20150408 |
|
| RGAV | Abandon patent right to avoid regrant |