CN201353649Y - Machine tool spindle bushing - Google Patents
Machine tool spindle bushing Download PDFInfo
- Publication number
- CN201353649Y CN201353649Y CNU2008202333733U CN200820233373U CN201353649Y CN 201353649 Y CN201353649 Y CN 201353649Y CN U2008202333733 U CNU2008202333733 U CN U2008202333733U CN 200820233373 U CN200820233373 U CN 200820233373U CN 201353649 Y CN201353649 Y CN 201353649Y
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- CN
- China
- Prior art keywords
- machine tool
- bearing shell
- oil film
- oil
- film wedge
- 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
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Abstract
The utility model relates to a machine tool spindle bushing, comprising a bearing body on the outside and a bushing on the inside. The bearing body is provided with an oil inlet groove and an oil outlet groove. The bushing is provided with two or more than two axial spiral oil wedges. The spiral oil wedge is provided with an oil inlet hole and an oil outlet hole. The machine tool spindle bushing can be used in general machine tool, precision machine tool and other fine mechanics, and has the advantages that the machine tool spindle bushing has low bearing temperature rise, is not easy to be welded, ensures the rotation speed of the machine tool spindle improve up to 2000 revolutions per minute, has strong anti-vibration performance, ensures the stable cutting of the machine tool under the heavy load, has high cutting rate and the like.
Description
Technical field
The utility model relates to a kind of machine tool chief axis support component, especially machine tool chief axis bearing shell.
Background technology
At present, support to machine tool chief axis, generally adopt rolling bearing structure, when processing uneven workpiece, particularly during grooving, because the rolling bearing structure support stiffness is poor, be easy to generate vibration, the rolling bearing structure processing work is confined near spindle end, particularly from the narrow groove of the distance≤80mm of spindle flange end face, and the processing of groove width≤4mm, then be easy to generate vibration man-hour for adding from spindle end sipes far away, promptly can't processing work, the cutter and then damage lathe of fractureing easily again, but this structure high-speed performance is good.What the bearing shell that uses adopted in the past is three axial straight trough structures, this Stability Analysis of Structures district is bigger, bearing capacity is strong, when can solve the uneven workpiece of processing and the vibration problem during grooving, but owing to be axial straight trough structure, inhomogeneous in each radial direction oil film rigidity, high stability is poor, Maximum speed limit can only reach 1000 rev/mins, thereby machine tooling efficient is lower.
Summary of the invention
When processing uneven workpiece in order to solve existing Metal Cutting Machine Tool, particularly main shaft adopts rolling bearing structure to be prone to the problem of vibration during grooving, the utility model provides a kind of novel lathe main shaft bearing shell, adopt by three uniform spiral oil film wedges so that the oil film rigidity of each radial direction is more even, strengthened stability at a high speed, bearing shell with this structure supports machine tool chief axis, can improve the support stiffness of main shaft, can improve main shaft gyration speed again.
The technical scheme that its technical problem that solves the utility model adopts is: the machine tool chief axis bearing shell, it is the outer bearing body that has, in bearing shell is arranged, oil-feed tank is arranged on the bearing body, goes out oil groove, the bearing shell top bearing shell has the axial screw oil film wedge more than 2 or 2, and fuel feed hole, oil outlet are arranged on the spiral oil film wedge.
The helical angle of spiral oil film wedge is 15 °-45 ° in the technical scheme that its technical problem that solves the utility model adopts; The depth capacity of spiral oil film wedge is the 0.1-0.4 millimeter; The cornerite of spiral oil film wedge is 30 °-90 °; The optimal helical angle of spiral oil film wedge be 35 ° 42 '.
Machine tool chief axis bearing shell, bearing body are the no stitch steel bushings of a circle, are cast with the high-abrasive material of making bearing shell with the method for centrifugal casting on the inwall of bearing body, process bearing shell through interior circle.Select the number of spiral oil film wedge then as required, after the number of spiral oil film wedge is determined, for making the machine tool chief axis bearing shell when working, form more complete oil film, to appropriately choose the cornerite of spiral oil film wedge, be the spiral oil film wedge chord length the central angle of corresponding bearing body, the size of its cornerite should be 360 ° by 2 times of angles of removing gained of the number of spiral oil film wedge.Select the helical angle of spiral oil film wedge, the scope of its helical angle is 15 °-45 °, when spiral angle is 35 ° of 42 ' times, is best angle, and the temperature rise when this moment, the machine tool chief axis bearing shell was worked is lower, and oil film is more complete.After the number of spiral oil film wedge, cornerite, helical angle are determined, can process the spiral oil film wedge at the inwall of bearing shell, the axial length of spiral oil film wedge should be effective active length of main shaft.
The machine tool chief axis bearing shell, on the excircle of bearing body, with mutually neat position, the two ends of spiral oil film wedge, process oil-feed tank respectively, go out oil groove.Process a hole respectively and communicate with oil-feed tank on each spiral oil film wedge, this hole is fuel feed hole.Process a hole respectively and communicate with going out oil groove on each spiral oil film wedge, this hole is oil outlet.The utility model is in when work, by oil-feed tank, fuel feed hole, go out oil groove, 2 kilograms/cm of oil outlet 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.
The beneficial effects of the utility model are that this novel lathe main shaft bearing shell can make machine spindle speed bring up to 2000 rev/mins, the axis tile phenomenon do not occur.Its resistance to shock is strong, can make lathe steadily cutting under heavy burden, and the stock-removing efficiency height, is used for can making on the lathe parts machining accuracy to reach very high, also can utilize the lathe of the utility model exploitation high precision in addition.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is machine tool chief axis bearing shell A location drawing on machine tool chief axis.
Fig. 2 is the front view of machine tool chief axis bearing shell.
Fig. 3 is the B-B profile of machine tool chief axis bearing shell.
Fig. 4 is the spiral oil film wedge expanded view of machine tool chief axis bearing shell.
1. bearing bodies among the figure, 2. bearing shell, 3. oil-feed tank 4. goes out oil groove, 5. fuel feed hole, 6. oil outlet, 7. spiral oil film wedge.
The specific embodiment
In Fig. 1,2,3,4, the machine tool chief axis bearing shell, it is bearing body (a 1) the selection of material 45
#Steel, bearing shell (2) the selection of material is ZSn6-6-3.Adopt 3 spiral oil film wedges (7), the helical angle of spiral oil film wedge adopts 35 °-42 ° of best angles, and the cornerite of spiral oil film wedge adopts 60 °, and the depth capacity of spiral oil film wedge adopts 0.35 millimeter.On the excircle of bearing body (1), with mutually neat position, the two ends of spiral oil film wedge, process oil-feed tank (3) respectively, go out oil groove (4).Process a hole respectively and communicate with oil-feed tank on each spiral oil film wedge, this hole is fuel feed hole (5).Process a hole respectively and communicate with going out oil groove on each spiral oil film wedge, this hole is oil outlet (6).The machine tool chief axis bearing shell is in when work, by oil-feed tank, fuel feed hole, go out oil groove, 2 kilograms/cm of oil outlet filling
2Recycle oil, can reach the purpose of this utility model.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 technological parameters of selecting for use, the machine tool chief axis bearing shell according to said method produces has above-mentioned advantage.
Claims (5)
1, a kind of machine tool chief axis bearing shell, it has bearing body (1), oil-feed tank (3), goes out oil groove (4) fuel feed hole (5), oil outlet (6) is characterized in that: have the axial screw oil film wedge (7) more than 2 on bearing shell (2).
2, machine tool chief axis bearing shell according to claim 1 is characterized in that: the helical angle of spiral oil film wedge (7) is 15 °-45 °.
3, machine tool chief axis bearing shell according to claim 1 is characterized in that: the depth capacity of spiral oil film wedge (7) is the 0.1-0.4 millimeter.
4, machine tool chief axis bearing shell according to claim 1 is characterized in that: the cornerite of spiral oil film wedge (7) is 30 °-90 °.
5, machine tool chief axis bearing shell according to claim 2 is characterized in that: the optimal helical angle of spiral oil film wedge (7) be 35 ° 42 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202333733U CN201353649Y (en) | 2008-12-30 | 2008-12-30 | Machine tool spindle bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202333733U CN201353649Y (en) | 2008-12-30 | 2008-12-30 | Machine tool spindle bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201353649Y true CN201353649Y (en) | 2009-12-02 |
Family
ID=41409990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202333733U Expired - Fee Related CN201353649Y (en) | 2008-12-30 | 2008-12-30 | Machine tool spindle bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201353649Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581317A (en) * | 2012-01-12 | 2012-07-18 | 浙江辛子精工机械股份有限公司 | Unloading type static-dynamic pressure shafting unit for machine tool |
| 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 |
| CN107327476A (en) * | 2017-08-29 | 2017-11-07 | 山东大学 | Herringbone circular helicoid hydrodynamic sliding bearing and application |
-
2008
- 2008-12-30 CN CNU2008202333733U patent/CN201353649Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581317A (en) * | 2012-01-12 | 2012-07-18 | 浙江辛子精工机械股份有限公司 | Unloading type static-dynamic pressure shafting unit for machine tool |
| CN102581317B (en) * | 2012-01-12 | 2014-12-24 | 浙江辛子精工机械股份有限公司 | Unloading type static-dynamic pressure shafting unit for machine tool |
| 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 |
| CN107327476A (en) * | 2017-08-29 | 2017-11-07 | 山东大学 | Herringbone circular helicoid hydrodynamic sliding bearing and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Liaocheng Xintai Machine Tool Co., Ltd. Assignor: Shandong Precion Group Co., Ltd. Contract record no.: 2011370000629 Denomination of utility model: Machine tool spindle bushing Granted publication date: 20091202 License type: Exclusive License Record date: 20111230 |
|
| ASS | Succession or assignment of patent right |
Owner name: DELONG (GROUP) MACHINE-TOOL CO., LTD., DEZHOU Free format text: FORMER OWNER: SHANDONG PRECION GROUP CO., LTD. Effective date: 20130129 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 253500 DEZHOU, SHANDONG PROVINCE TO: 253003 DEZHOU, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130129 Address after: 253003 No. 1 Delong Road, Canal Economic Development Zone, Shandong, Dezhou Patentee after: Dezhou Delong (Group) Machine Tool Co., Ltd. Address before: 253500 No. 1, West Ring Road, Lingxian County Economic Development Zone, Shandong Patentee before: Shandong Precion Group Co., Ltd. |
|
| 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: 20091202 Termination date: 20161230 |