CN2043291U - Dynamic pressure sliding bearing - Google Patents
Dynamic pressure sliding bearing Download PDFInfo
- Publication number
- CN2043291U CN2043291U CN 88216306 CN88216306U CN2043291U CN 2043291 U CN2043291 U CN 2043291U CN 88216306 CN88216306 CN 88216306 CN 88216306 U CN88216306 U CN 88216306U CN 2043291 U CN2043291 U CN 2043291U
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- CN
- China
- Prior art keywords
- sliding bearing
- oil film
- utility
- film wedge
- model
- 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.)
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- Sliding-Contact Bearings (AREA)
Abstract
The utility model relates to a dynamic pressure sliding bearing. A plurality of spiral oil wedges are installed on the inner wall of a bearing shell. The utility model can be applied to a general machine tool, a precision machine tool and other precision machinery. The utility model has the advantageds of low bearing temperature and un-easy broken property. The rotating speed of the main shaft of the machine tool raises to 2000 rpm. The enhanced anti-shudder characteristics enables the machine tool to cut smoothly and to speed up the stock removal rate with heavy load.
Description
The utility model provides a kind of hydrodynamic sliding bearing.
At present, sliding bearing is adopted in supporting always before the machine tool chief axis, and resistance to shock is good because sliding bearing has, the precision of circling round height, advantage such as easy to adjust, but because sliding bearing temperature rise, easy axis tile cause main shaft jitter phenomenon to occur.Therefore, the raising of machine spindle speed and the machining accuracy of lathe have been limited.For improving the above-mentioned defective of bearing, improve machine tool capability, people had selected common simgle oil wedge sliding bearing once for use, annular oil duct formula sliding bearing, pit formula sliding bearing, but do not solve problems such as bearing temperature rise height, easy axis tile all the time, thus limited the raising of machine tool capability.
The purpose of this utility model be to provide a kind of bearing temperature rise low, the corresponding raising of machine spindle speed, main shaft resistance to shock are strengthened, more steady during lathe heavy duty cutting, the hydrodynamic sliding bearing that cutting rate is high.
Technical solution of the present utility model is: a kind of hydrodynamic sliding bearing, it has bearing support (1), oil inlet hole (3), oil outlet (4), oil-feed tank (5), goes out oil groove (6), and its special way is to have axial screw oil film wedge (7) more than 2 or 2 at bearing shell (2).
The helix angle of spiral oil film wedge (7) is 15 °～45 ° in the utility model technical solution.
The maximum depth of spiral oil film wedge (7) is 0.1～0.4 millimeter in the utility model technical solution.
The cornerite of spiral oil film wedge (7) is 30 °～90 ° in the utility model technical solution.
In the utility model technical solution the optimal helical angle of spiral oil film wedge (7) be 35 ° 42 '.
The utility model can make the bearing oil temperature drop low, when making machine spindle speed bring up to 2000 rev/mins, the axis tile phenomenon do not occur.The utility model resistance to shock is strong, can make lathe steadily cutting under heavy burden, and the cutting rate height, is used for can making on the lathe parts machining accuracy to reach
8, in addition, also can utilize the lathe of the utility model exploitation high precision.
Fig. 1, the hydrodynamic sliding bearing plan view.
Fig. 2, hydrodynamic sliding bearing A-A sectional drawing.
Fig. 3, hydrodynamic sliding bearing spiral oil film wedge unfolded drawing.(1) is bearing support; (2) be bearing shell; (3) be oil-feed tank, (4) for going out oil groove, (5) are oil inlet hole, and (6) are oil outlet, and (7) are the spiral oil film wedge.
Below in conjunction with accompanying drawing the utility model is done a detailed description:
Bearing support (1) is the seamless steel sleeve of a circle, is cast with the high-abrasive material of making bearing shell with the method for centrifugal casting on the inwall of bearing support (1), processes bearing shell (2) through interior circle.Select the number of spiral oil film wedge (7) then as required, after the number of spiral oil film wedge (7) is determined, for making hydrodynamic sliding bearing (when working, form more complete oil film, to appropriately choose the cornerite of spiral oil film wedge (7), be spiral oil film wedge (7) chord length the central angle of corresponding bearing support (1), the size of its cornerite should be 360 ° by 2 times of angles of removing gained of the number of spiral oil film wedge (7).Select the helix angle of spiral oil film wedge (7), the scope of its helix angle is 15 °～45 °, when helix angle is 35 ° of 42 ' times, is best angle, and the temperature rise when this moment, hydrodynamic sliding bearing was worked is lower, and oil film is more complete.After the number of spiral oil film wedge (7), cornerite, helix angle are determined, can process spiral oil film wedge (7) at the inwall of bearing shell (2), the axial length of spiral oil film wedge (7) should be effective active length of main shaft.
On the excircle of bearing support (1), with the mutually neat position, two ends of spiral oil film wedge (7), process oil-feed tank (3) respectively, go out oil groove (4).Process a hole respectively and communicate with oil-feed tank (3) on each spiral oil film wedge (7), this hole is oil inlet hole (5).Process a hole respectively and communicate with going out oil groove (4) on each spiral oil film wedge (7), this hole is oil outlet (6).The utility model is in when work, by oil-feed tank (3), oil inlet hole (5), go out oil groove (4), 2 kilograms/cm of oil outlet (6) filling
2Recycle oil, can reach the purpose of this utility model.
For precision machine tool, for ease of regulating main shaft, make the main shaft stability of rotation, the utility model can be made the cylindrical internal cone type, promptly along the spindle nose direction certain tapering is arranged.
Embodiment:
Bearing support (1) the selection of material is the 45# steel, and bearing shell (2) the selection of material is ZSn6-6-3.Adopting 3 spiral oil film wedges (7), the helix angle of spiral oil film wedge (7) adopts best angle 35 ° 42 ', the cornerite of spiral oil film wedge (7) adopts 60 °, and the maximum depth of spiral oil film wedge (7) adopts 0.35 millimeter.For ease of regulating main shaft.Present embodiment adopts the cylindrical internal cone type, promptly along its inwall of spindle nose direction certain tapering is arranged, and its tapering is 1:15.By these process parameters of selecting for use, the hydrodynamic sliding bearing that produces according to said method has above-mentioned advantage.
Claims (5)
1, a kind of hydrodynamic sliding bearing, it has bearing support (1), oil-feed tank (3), goes out oil groove (4), oil inlet hole (5), oil outlet (6), it is characterized in that having on bearing shell (2) the axial screw oil film wedge (7) more than 2.
2, hydrodynamic sliding bearing according to claim 1, the helix angle that it is characterized in that spiral oil film wedge (7) are 15 °～45 °.
3, hydrodynamic sliding bearing according to claim 1, the maximum depth that it is characterized in that spiral oil film wedge (7) is 0.1～0.4 millimeter.
4, hydrodynamic sliding bearing according to claim 1, the cornerite that it is characterized in that spiral oil film wedge (7) are 30 °～90 °.
5, hydrodynamic sliding bearing according to claim 2, the best bag helix angle that it is characterized in that spiral oil film wedge (7) be 35 ° 42 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216306 CN2043291U (en) | 1988-11-16 | 1988-11-16 | Dynamic pressure sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216306 CN2043291U (en) | 1988-11-16 | 1988-11-16 | Dynamic pressure sliding bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2043291U true CN2043291U (en) | 1989-08-23 |
Family
ID=4848976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88216306 Withdrawn CN2043291U (en) | 1988-11-16 | 1988-11-16 | Dynamic pressure sliding bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2043291U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451367C (en) * | 2007-03-02 | 2009-01-14 | 余志鹏 | Lubricating oil pressure suspension bearing bush |
| CN103752865A (en) * | 2014-01-10 | 2014-04-30 | 山东威达重工股份有限公司 | Milling machine spindle support mechanism |
| CN106050922A (en) * | 2016-07-04 | 2016-10-26 | 浙江大学 | Self-circulation slide bearing |
| CN107327476A (en) * | 2017-08-29 | 2017-11-07 | 山东大学 | Herringbone circular helicoid hydrodynamic sliding bearing and application |
| CN107387548A (en) * | 2017-08-29 | 2017-11-24 | 山东大学 | Archimedes' helicoid hydrodynamic sliding bearing and application |
-
1988
- 1988-11-16 CN CN 88216306 patent/CN2043291U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100451367C (en) * | 2007-03-02 | 2009-01-14 | 余志鹏 | Lubricating oil pressure suspension bearing bush |
| CN103752865A (en) * | 2014-01-10 | 2014-04-30 | 山东威达重工股份有限公司 | Milling machine spindle support mechanism |
| CN106050922A (en) * | 2016-07-04 | 2016-10-26 | 浙江大学 | Self-circulation slide bearing |
| CN106050922B (en) * | 2016-07-04 | 2018-08-14 | 浙江大学 | The sliding bearing of self-circulation type |
| CN107327476A (en) * | 2017-08-29 | 2017-11-07 | 山东大学 | Herringbone circular helicoid hydrodynamic sliding bearing and application |
| CN107387548A (en) * | 2017-08-29 | 2017-11-24 | 山东大学 | Archimedes' helicoid hydrodynamic sliding bearing and application |
| CN107387548B (en) * | 2017-08-29 | 2023-07-21 | 山东大学 | Archimedes spiral dynamic pressure sliding bearing and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |