CN86208176U - High rigidity main spindle system for machine tool - Google Patents
High rigidity main spindle system for machine tool Download PDFInfo
- Publication number
- CN86208176U CN86208176U CN 86208176 CN86208176U CN86208176U CN 86208176 U CN86208176 U CN 86208176U CN 86208176 CN86208176 CN 86208176 CN 86208176 U CN86208176 U CN 86208176U CN 86208176 U CN86208176 U CN 86208176U
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- CN
- China
- Prior art keywords
- main spindle
- high rigidity
- machine tool
- damping
- spindle system
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- 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 - Lifetime
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Abstract
The utility model discloses a high rigidity main spindle system for machine tool, and is characterized in that a set of oil film damping device is arranged at the back end of fore bearing of main spindle. The oil film damping device is composed of a damping sleeve and an internal sleeve fixed in the fore bearing of main spindle. When the utility model works, lubricating oil flows past the gap between the two sleeves to form damping oil film, so as to enhance the dynamic rigidity of main spindle and cutting anti-vibrating of the machine tool.
Description
The utility model relates to a kind of machine-tool spindle system, particularly has the axis system of high rigidity.
Existing machine-tool spindle system is made up of main shaft, front and back bearings, locking nut, gear etc.Since be subjected to the influence of bearing and parts level of processing, the rigidity of main shaft, especially dynamic characteristic is very bad, directly influences the performance of lathe, makes the fineness of cutting workpiece low, and anti-flutter is bad.
Task of the present utility model just provides a kind of new-type axis system, can improve the dynamic stiffness of main shaft significantly, improves the anti-flutter performance of lathe, and increases cost seldom, and is relatively simple for structure.
Technical solution of the present utility model is: on machine tool chief axis, the oil-film damping device of damping cover and interior cover composition is equipped with in the rear end of fore bearing.
Below in conjunction with the detailed in addition description of accompanying drawing:
Fig. 1 is the profile of a kind of specific embodiment of the present utility model.
With reference to Fig. 1, main shaft (1) is fixed on the headstock (3) by fore bearing (2) and rear bearing (7), (8), and the bearing clearance amount is to be adjusted by locking nut (9).There is a damping cover (5) to be fixed in the spindle hole of headstock (3) in the rear end of fore bearing (2).Fore bearing (2) on the main shaft (1) is fixed by interior cover (11) and locking nut (6), protecgulum workpiece such as (12).Between the periphery of interior cover (11) and the endoporus of damping cover (5) a δ gap is arranged, the scope of δ is 0.02mm to 5mm, and its value and damping cover diameter of bore relation in direct ratio are passed through lubricating oil in the gap, the effect of generation oil-film damping.Lubricating oil can be provided by a cover independent agency, and the simplest is directly to be supplied with by the machine tool lubrication system.There is being the fuel feed hole (4) on oilhole (10) and the headstock (3) to communicate on the damping cover (5), during lathe work, (4) enter hole (10) to lubricating oil through the hole, form oil film in the gap of interior cover (11) and damping cover (5), simultaneously fore bearing (2) are lubricated.When the ratio K of the length of damping cover (5) and its endoporus 0.1 to 2 the time, the working condition of axis system is better, the best when K=0.6.
A kind of specific embodiment of the present utility model is to be used on the axis system of CA6140 engine lathe.As δ=0.3mm, during K=0.6, double during the comparable non-refuelling film of single order dynamic stiffness damping unit, cut anti-flutter raising about 40%.The utility model can be used on the lathe of any pattern and specification.
Claims (4)
1, a kind of high rigidity machine-tool spindle system, have main shaft [1], be installed in the fore bearing [2] of front-end of spindle and be installed in rear bearing [7], [8] and the locking nut [9] of rear-end of spindle, it is characterized in that: on main shaft [1], the oil-film damping device of being made up of damping cover [5] and interior cover [11] is equipped with in the rear end of fore bearing [2].
2, high rigidity machine-tool spindle system according to claim 1 is characterized in that: the gap of damping cover (5) and interior cover (11) is between 0.02～5mm.
3, high rigidity machine-tool spindle system according to claim 1 and 2, it is characterized in that: the diameter of bore of damping cover (5) and length ratio K are between 0.1～2.
4, high rigidity machine-tool spindle system according to claim 3 is characterized in that: K=0.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208176 CN86208176U (en) | 1986-10-20 | 1986-10-20 | High rigidity main spindle system for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208176 CN86208176U (en) | 1986-10-20 | 1986-10-20 | High rigidity main spindle system for machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86208176U true CN86208176U (en) | 1987-10-07 |
Family
ID=4810444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86208176 Expired - Lifetime CN86208176U (en) | 1986-10-20 | 1986-10-20 | High rigidity main spindle system for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86208176U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371130C (en) * | 2003-02-26 | 2008-02-27 | 德克尔·马霍普夫龙滕有限责任公司 | Working talbe for processing bar-shape workpieces |
| CN107014584A (en) * | 2017-05-05 | 2017-08-04 | 中国航空工业集团公司沈阳空气动力研究所 | A set of high-accuracy spindle system for jet stream balance calibration |
-
1986
- 1986-10-20 CN CN 86208176 patent/CN86208176U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371130C (en) * | 2003-02-26 | 2008-02-27 | 德克尔·马霍普夫龙滕有限责任公司 | Working talbe for processing bar-shape workpieces |
| CN107014584A (en) * | 2017-05-05 | 2017-08-04 | 中国航空工业集团公司沈阳空气动力研究所 | A set of high-accuracy spindle system for jet stream balance calibration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |