CN201910676U - High-speed electric spindle without independent bearing supporting - Google Patents
High-speed electric spindle without independent bearing supporting Download PDFInfo
- Publication number
- CN201910676U CN201910676U CN2010206604996U CN201020660499U CN201910676U CN 201910676 U CN201910676 U CN 201910676U CN 2010206604996 U CN2010206604996 U CN 2010206604996U CN 201020660499 U CN201020660499 U CN 201020660499U CN 201910676 U CN201910676 U CN 201910676U
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- rotor
- main shaft
- electric spindle
- electric main
- supporting
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a high-speed electric spindle without independent bearing supporting comprises a shell, an electric spindle, an internally-mounted motor stator and a rotor. The electric spindle, the internally-mounted motor stator and the rotor are arranged in the shell, the stator is in the irregular shape so as to generate dynamic pressure effect together with the rotor, and the side end surface of the rotor is in the irregular shape so as to generate dynamic pressure effect together with inner end surfaces of a front end cap and a rear end cap of the shell. The high-speed electric spindle without independent bearing supporting has the advantages that the electric spindle is free of independent supporting bearings, an electric spindle internally-mounted motor, the end caps and the like are integrated with the supporting bearings, so that compact structure, light weight and small volume are realized, dynamic pressures bearings formed by the dynamic pressure effects are in a non-contact state, friction and abrasion due to direct contact are avoided, the bearings are long in service life, and the electric spindle is low in loss and high in efficiency.
Description
Technical field
The utility model relates to the electric main shaft in a kind of electromechanical engineering field, particularly relates to a kind of high-speed electric main shaft that does not have the separate bearings supporting.
Background technology
The electricity main shaft is a kind of typical dynamo-electric functional part, and it is combined as a whole spindle drive motor and main shaft, realizes motor---the function of integrated spindle axisization.At present high-speed electric main shaft all is to be supported by bearing independently, and wherein bearing type has rolling bearing, FDB and magnetic suspension bearing etc.Because independently block bearing need occupy corresponding space and volume, makes that the axial dimension of electric main shaft and weight are bigger, can't satisfy the purpose that reduces electric main shaft volume and weight.
Because the defective that above-mentioned existing electric main shaft exists, the design people is actively studied innovation, and the high-speed electric main shaft in the hope of the no separate bearings of founding a kind of new structure supports makes it have more practicality.
The utility model content
Main purpose of the present utility model is, overcome the defective that existing electric main shaft exists, and the high-speed electric main shaft that the no separate bearings that a kind of new structure is provided supports, technical problem to be solved is that its existing electric main axle structure compactness, weight are reduced significantly, thereby be suitable for practicality more, and have the value on the industry.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.According to a kind of high-speed electric main shaft that does not have the separate bearings supporting that the utility model proposes, comprise shell, and be arranged on electric main shaft, inner electric machine stator and rotor in the described shell, described stator is with rotor and produces the irregularly shaped of dynamic pressure effect, and the side end face of described rotor is with the front end housing of described shell and the inner face of rear end cap and produces the irregularly shaped of dynamic pressure effect.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
The electric main shaft of aforesaid polynary bearing supporting is provided with the cooling passage that the stator to described inner electric machine cools off in the wherein said housing.
By technique scheme, the high-speed electric main shaft that the utility model does not have the separate bearings supporting has following advantage at least:
(1) electric main shaft does not have independently block bearing, and current collection main shaft inner electric machine, end cap etc. are one with block bearing, compact conformation, in light weight, volume is little.
(2) according to the operation principle of hydrodynamic bearing, the internal diameter of motor stator is made the irregular cycle shape that can produce the circumference dynamic pressure effect, the one side that front and rear cover is relative with the rotor side is made the concave plane shape that can produce the end face dynamic pressure effect, rotating shaft runs up in the process, between inner electric machine stator and the rotor, form the dynamic pressure air film between the inner side end of the front and rear cover of the side end face of rotor and electric main shaft, this air film can bear accordingly radially or axial load, to realize supporting and the suspension effect to electric main shaft rotating shaft.
(3) hydrodynamic bearing that is formed by dynamic pressure effect is a contactless state, does not therefore have the directly friction and wear phenomenon of contact, so the loss long, electric main shaft of the life-span of bearing is little, efficient is high.
In sum, the high-speed electric main shaft of the no separate bearings supporting of the utility model special construction, 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 solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is a motor stator and schematic diagram after rotor is connected among Fig. 1;
Fig. 3 is the schematic diagram of front and rear cover among Fig. 1;
Fig. 4 is a front and rear cover and schematic diagram after rotor is connected among Fig. 1.
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked, below in conjunction with accompanying drawing and preferred embodiment, to embodiment of the present utility model describe in detail as after.
As shown in Figure 1, a kind of high-speed electric main shaft that does not have separate bearings supporting is by shell 6 be installed in its inner motor stator 4, rotor 3, rotating shaft 1 and parts such as front end housing 2 and rear end cap 7 and form.The inner electric machine stator 4 of electricity main shaft and rotor 3, rotor 3 and front end housing 2 and the rear end cap 7 double block bearings of doing.Stator 4 is with rotor 3 and produces the irregularly shaped of dynamic pressure effects, the inner face that the side end face of described rotor 3 is with the front end housing 2 of described shell 6 and rear end cap 7 produces the irregularly shaped of dynamic pressure effect, utilize between inner electric machine stator 4 and the rotor 3, the dynamic pressure effect between rotor 3 sides and the rubbing surface of end cover in the high-speed cruising process forms radial and axial hydrodynamic bearing, realizes supporting and suspension effect to electric main shaft rotating shaft 1.Be provided with the cooling passage 5 that the stator 4 to described inner electric machine cools off in the housing 6, realize cooling electric main shaft inner electric machine stator 4.
As Fig. 2, Fig. 3 and shown in Figure 4, operation principle according to hydrodynamic bearing, the internal diameter of motor stator 4 is made the irregular cycle shape that can produce the circumference dynamic pressure effect, the one side that front end housing 2 is relative with rotor 3 side end faces with rear end cap 7 is made the concave plane shape that can produce the end face dynamic pressure effect, rotating shaft runs up in the process, form the dynamic pressure air film between inner electric machine stator 4 and the rotor 3 and between the inner face of the front and rear cover 2 of the side end face of rotor 3 and electric main shaft and 7, this air film can bear accordingly radially or axial load, to realize supporting and the suspension effect to electric main shaft rotating shaft.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement 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 solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (3)
1. one kind is not had the high-speed electric main shaft that separate bearings supports, comprise shell (6), and be arranged on electric main shaft (1), inner electric machine stator (4) and rotor (3) in the described shell (6), described shell (6) comprises front end housing (2) and rear end cap (7), it is characterized in that, the front end of described electric main shaft is arranged on outside the front end housing (2), and described front end housing (2) and rear end cap (7) give that rotor (3) is double does supporting.
2. according to the high-speed electric main shaft of the no separate bearings of claim 1 supporting, it is characterized in that, described electric main shaft (1) is in the process of running up, between described inner electric machine stator (4) and the rotor (3), form between the inner face of the side end face of rotor (3) and electric front-end of spindle lid (2) and rear end cap (7) bear corresponding radially or the dynamic pressure air film of axial load, by supporting and the suspension of this dynamic pressure air film realization to electric main shaft.
3. according to the high-speed electric main shaft of the no separate bearings supporting of claim 1, it is characterized in that, be provided with the cooling passage (5) that the stator (4) to described inner electric machine cools off in the described shell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206604996U CN201910676U (en) | 2010-12-15 | 2010-12-15 | High-speed electric spindle without independent bearing supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206604996U CN201910676U (en) | 2010-12-15 | 2010-12-15 | High-speed electric spindle without independent bearing supporting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910676U true CN201910676U (en) | 2011-07-27 |
Family
ID=44302875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206604996U Expired - Fee Related CN201910676U (en) | 2010-12-15 | 2010-12-15 | High-speed electric spindle without independent bearing supporting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910676U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570689A (en) * | 2010-12-15 | 2012-07-11 | 江苏华雕机械有限公司 | High-speed electric spindle without independent bearing support |
-
2010
- 2010-12-15 CN CN2010206604996U patent/CN201910676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570689A (en) * | 2010-12-15 | 2012-07-11 | 江苏华雕机械有限公司 | High-speed electric spindle without independent bearing support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20161215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |