CN102570692A - Electric spindle supported by multivariant bearing - Google Patents
Electric spindle supported by multivariant bearing Download PDFInfo
- Publication number
- CN102570692A CN102570692A CN2010105891470A CN201010589147A CN102570692A CN 102570692 A CN102570692 A CN 102570692A CN 2010105891470 A CN2010105891470 A CN 2010105891470A CN 201010589147 A CN201010589147 A CN 201010589147A CN 102570692 A CN102570692 A CN 102570692A
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- China
- Prior art keywords
- bearing
- shell
- rotary axle
- electric spindle
- main shaft
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Abstract
The invention discloses an electric spindle supported by a multivariant bearing. The electric spindle comprises a shell, a rotary axle, a stator and a rotator, wherein the rotary axle is arranged in the shell, and the stator and the rotator are internally provided with a motor. The front end of the rotary axle is arranged at the external part of the shell and is adjacent to the front cover of the shell. An oil inlet for supplying pressure oil to the rotary axle is arranged in the front cover of the shell. A rear-supporting bearing is connected at the tail end of the rotary axle in the shell. The electric spindle supported by the multivariant bearing has the beneficial effects that two angular contact ball bearings of the rear bearing are used as the rear end radical supporting of the rotary axle and the axial supporting of the rotary axle to play the functions of being convenience in maintaining and repairing and being capable of bearing dual-directional axial load of the rolling bearing. By supplying pressure oil through the oil inlet, an oil membrane dynamic and static pressure bearing is formed between the front cover and the rotary axle. As the dynamic and static pressure oil membrane bearing has a larger axial bearing capacity and a longer server life than the rolling bearing, the bearing capacity of the output end of the electric spindle can be improved, and a longer service life of the electric spindle can be maintained under a larger external load.
Description
Technical field
The present invention relates to the electric main shaft in a kind of electromechanical engineering field, particularly relate to a kind of electric main shaft of polynary bearing supporting.
Background technology
High-speed electric main shaft is with adorning in the drive motors, the power part of the electromechanical integration of functions such as, high accuracy high-speed to realize and high efficiency.The general bearing that adopts same type of the supporting system of present electric main shaft, therefore the structure of electric main shaft mainly contains: the electric main shaft of the electric main shaft of the electric main shaft of rolling bearing supporting, fluid bearing supporting, the electric main shaft of magnetic suspension bearing supporting and the supporting of other bearing.The electric main axle structure of these same types of bearings supportings is simple, can realize requirement at a high speed simple or simple heavy duty, still, for the occasion that requires to obtain comprehensive or some property, adopts the electric main shaft of single type bearing supporting then to be difficult to realize.
Because the defective of the existence of above-mentioned existing electric main shaft, the design people actively studies innovation, and the electric main shaft in the hope of the polynary bearing of founding a kind of new structure supports makes it have more practicality.
Summary of the invention
Main purpose of the present invention is; Overcome the limitation that existing single type bearing supports electric main shaft application; And the electric main shaft that the polynary bearing that a kind of new structure is provided supports, technical problem to be solved is to make it be directed against the requirement of concrete electric main shaft and the characteristics of each class bearing, the bearing dissimilar to the bearing of different parts; Thereby be suitable for practicality more, and have the value on the industry.
The object of the invention and solve its technical problem and adopt following technical scheme to realize.The electric main shaft that a kind of polynary bearing that proposes according to the present invention supports; Comprise shell and be arranged on the rotating shaft in the said shell, the stator and the rotor of inner electric machine; The front end of said rotating shaft is arranged on the outside and adjacent with the protecgulum of said shell of said shell; Be provided with the oil-in to said rotating shaft supply pressure oil in the protecgulum of said shell, the end of said rotating shaft is connected with rear trunnion and holds in said shell.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
The electric main shaft of aforesaid polynary bearing supporting is provided with the cooling passage that the stator to said inner electric machine cools off in the wherein said housing.
By technique scheme, the electric main shaft of the polynary bearing supporting of the present invention has advantage at least:
1, the design of the rear bearing of the electric main shaft of polynary bearing supporting, two angular contact ball bearings that utilize rear bearing be as the rear end radial support of rotating shaft and the axially mounting of rotating shaft, and the performance rolling bearing uses easy to maintenance and can bear the function of bi-directional axial load.
2, the design of the oil-in of the electric main shaft of polynary bearing supporting; Through oil-in supply pressure oil; Protecgulum and and rotating shaft between form the oil film dynamic and hydrostatic bearing; Radially bearing capacity is big, the life-span is long than rolling bearing owing to hybrid hydrodynamic oil film journal bearing, so can improve the bearing capacity of electric main shaft output and under big external applied load, keep long useful life.
3, in above-mentioned electric main shaft, cooling passage is arranged in the electric main shaft housing, realizes electric main shaft inner electric machine stator is cooled off.
In sum, the electric main shaft of the polynary bearing supporting of special construction of the present invention, it has above-mentioned many advantages and practical value, thereby is suitable for practicality more.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention, understands technological means of the present invention in order can more to know, and can implement according to the content of specification, below with preferred embodiment of the present invention and conjunction with figs. specify as after.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, specific embodiments of the invention specify as after.
As shown in Figure 1; A kind of electric main shaft of polynary bearing supporting comprises shell and is arranged on the rotating shaft in the said shell, the stator 41 and the rotor 4 of inner electric machine that the front end of said rotating shaft is arranged on the outside and adjacent with the protecgulum 2 of shell of shell; Be provided with oil-in 3 in the protecgulum 2 of shell to rotating shaft 1 supply pressure oil; By oil-in 3 supply pressures oil,, form the oil film dynamic and hydrostatic bearing between protecgulum 2 and the rotating shaft 1 as the radial support of electric main shaft output; Radially bearing capacity is big, the life-span is long than rolling bearing owing to hybrid hydrodynamic oil film journal bearing, so can improve the bearing capacity of electric main shaft output and under big external applied load, keep long useful life.
The end of rotating shaft 1 is connected with rear trunnion and holds 7 in shell 6, rear bearing 7 be two angular contact ball bearings as the rear end radial support of rotating shaft and the axially mounting of rotating shaft, the performance rolling bearing uses easy to maintenance and the function that can bear bi-directional axial load; In above-mentioned electric main shaft, be provided with the cooling passage that the stator 41 to inner electric machine cools off in the housing 6.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (2)
1. the electric main shaft of a polynary bearing supporting; Comprise shell (6) and be arranged on the rotating shaft (1) in the said shell (6), the stator (41) and the rotor (4) of inner electric machine; The front end of said rotating shaft (1) is arranged on the outside and adjacent with the protecgulum (2) of said shell (6) of said shell (6); It is characterized in that; Be provided with the oil-in (3) to said rotating shaft (1) supply pressure oil in the protecgulum of said shell (2), the end of said rotating shaft (1) is connected with rear trunnion and holds (7) in said shell.
2. the electric main shaft of polynary bearing supporting according to claim 1 is characterized in that, is provided with the cooling passage that the stator (4) to said inner electric machine cools off in the said shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105891470A CN102570692A (en) | 2010-12-15 | 2010-12-15 | Electric spindle supported by multivariant bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105891470A CN102570692A (en) | 2010-12-15 | 2010-12-15 | Electric spindle supported by multivariant bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102570692A true CN102570692A (en) | 2012-07-11 |
Family
ID=46415369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105891470A Pending CN102570692A (en) | 2010-12-15 | 2010-12-15 | Electric spindle supported by multivariant bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102570692A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100729A (en) * | 2013-01-29 | 2013-05-15 | 西安交通大学 | High-speed electric main shaft device using sliding bearing and rolling bearing for composite support |
| DE102019106426A1 (en) * | 2019-03-13 | 2020-09-17 | Wittenstein Se | Motor shaft bearing for an electric motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899251Y (en) * | 2006-03-30 | 2007-05-09 | 上海大学 | Super-high-speed electric spindle with multiple bearing support |
| CN101576121A (en) * | 2009-06-17 | 2009-11-11 | 重庆大学 | Static-dynamic mixed oil film bearing |
| CN201898405U (en) * | 2010-12-15 | 2011-07-13 | 江苏华雕机械有限公司 | Multi-bearing supported electric main shaft |
-
2010
- 2010-12-15 CN CN2010105891470A patent/CN102570692A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2899251Y (en) * | 2006-03-30 | 2007-05-09 | 上海大学 | Super-high-speed electric spindle with multiple bearing support |
| CN101576121A (en) * | 2009-06-17 | 2009-11-11 | 重庆大学 | Static-dynamic mixed oil film bearing |
| CN201898405U (en) * | 2010-12-15 | 2011-07-13 | 江苏华雕机械有限公司 | Multi-bearing supported electric main shaft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100729A (en) * | 2013-01-29 | 2013-05-15 | 西安交通大学 | High-speed electric main shaft device using sliding bearing and rolling bearing for composite support |
| CN103100729B (en) * | 2013-01-29 | 2015-07-01 | 西安交通大学 | High-speed electric main shaft device using sliding bearing and rolling bearing for composite support |
| DE102019106426A1 (en) * | 2019-03-13 | 2020-09-17 | Wittenstein Se | Motor shaft bearing for an electric motor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120711 |