CN101710751A - Postposition type electric main shaft of motor - Google Patents
Postposition type electric main shaft of motor Download PDFInfo
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- CN101710751A CN101710751A CN200910232718A CN200910232718A CN101710751A CN 101710751 A CN101710751 A CN 101710751A CN 200910232718 A CN200910232718 A CN 200910232718A CN 200910232718 A CN200910232718 A CN 200910232718A CN 101710751 A CN101710751 A CN 101710751A
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- main shaft
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- bearing
- rotating shaft
- electric main
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Abstract
The invention discloses a postposition type electric main shaft of a motor, which comprises a rotating shaft shell, a rotating shaft, a stator shell, a motor stator, a motor rotor and a bearing, wherein the rotating shaft is arranged in the rotating shaft shell; the motor rotor is arranged on the rotating shaft; the bearing comprises a first main shaft bearing and a second main shaft bearing which are used for mounting the output end of the rotating shaft; the first main shaft bearing and the second main shaft bearing form a cantilever type support structure on the rotating shaft; and one end on the rotating shaft, which is far from the output end, is provided with the motor stator and the motor rotor to form a postposition type structure of the built-in motor. The heat radiated by the built-in motor of the electric main shaft has less heat influence on the output end of the electric main shaft on premise of realizing the normal running of the electric main shaft, thereby increasing the output end precision of the electric main shaft and improving the working condition of the bearing and prolonging the service life; the structure is more compact, and the rigidity is higher; and meanwhile, the diameter of the front part of the electric main shaft, which approaches the output end, is smaller due to the postposition of the built-in motor, and the requirements for special workpiece processing, such as deep hole grinding, deep cavity milling, and the like can be more favorably met.
Description
Technical field
The present invention relates to the electric main shaft in a kind of electromechanical engineering field, particularly is the rear-mounted electric main shaft of a kind of inner electric machine.
Background technology
The electricity main shaft is the functional part with the electromechanical integration of dress, realization power conversion and output in the spindle motor.The inner electric machine of present electric main shaft is the centre that places two groups of block bearing parts, the heat that the inner electric machine stator and rotor are produced in the running is bigger to the thermal impact of electric mainshaft bearing and output, the working condition of output bearing is worsened, and be unfavorable for keeping the precision of electric main shaft output, influence result of use; Simultaneously, electric main shaft outer dia is excessive, can not satisfy processing requests such as deep hole mill, dark chamber milling.
Thereby need develop a kind of novel electric main shaft, essence by structure changes, overcome the shortcoming that the traditional electrical main shaft is not suitable for carrying out deep hole machining, simultaneously, heat that electric main shaft inner electric machine distributed is reduced the thermal impact of electric main shaft output, make the more compact structure of electric main shaft, rigidity precision better, output higher.
Summary of the invention
The present invention seeks to be, overcome in the existing various electric main shafts, inner electric machine places two groups of limitation and inner electric machine heatings between the block bearing parts that electric main shaft output precision is influenced bigger shortcoming, and provide a kind of electric main shaft with the inner electric machine postposition, make the more compact structure of electric main shaft, rigidity is better, inner electric machine is littler to electric main shaft output precision influence, has reduced the mutual thermal impact between motor and the block bearing, helps prolonging the useful life of electric main shaft.
To achieve these goals, the present invention realizes by the following technical solutions:
Postposition type electric main shaft of motor, comprise the rotating shaft shell, be arranged on rotating shaft, stator casing, motor stator in the rotating shaft shell and be arranged on rotor and bearing in the rotating shaft, it is characterized in that, described bearing comprises first main shaft bearing and second main shaft bearing of the radial and axial supporting that realizes countershaft, described first main shaft bearing and second main shaft bearing are installed the rotating shaft output, constitute the cantilevered support structure to described rotating shaft; End away from output in described rotating shaft is installed described motor stator and rotor, the rotation that realizes countershaft drives, then constitute the rear-mounted structure of inner electric machine, when realizing driving electric main axis rotation, reduced the thermal impact each other of motor and bearing, make that electric main shaft machining accuracy is higher, more compact structure, rigidity is better.And, processing request such as mill to adapt to deep hole mill, dark chamber because the postposition of motor can reduce the diameter of electric main shaft output greatly.
According to above-mentioned postposition type electric main shaft of motor, wherein, described stator casing is connected with the rotating shaft shell, and the cavity in described stator casing is settled described motor stator, and described motor stator is fixedlyed connected with the inwall of stator casing.
According to above-mentioned postposition type electric main shaft of motor, wherein, described first main shaft bearing and second main shaft bearing are installed in the described rotating shaft shell, are provided with bearing (ball) cover in addition at the front end of described rotating shaft shell, are provided with a sealing device in the described bearing (ball) cover.
According to above-mentioned postposition type electric main shaft of motor, wherein, on described stator casing, also be furnished with the cooling-water duct of the cooling system of connecting electric main shaft, the stator of inner electric machine is cooled off.
According to above-mentioned postposition type electric main shaft of motor, wherein, the whole external structure of described postposition type electric main shaft of motor is " bottle " formula shape, and the output outer dia of described postposition type electric main shaft of motor makes its output can adapt to processing requests such as deep hole grinds, mill in dark chamber less than its other end.
The present invention has the following advantages compared with prior art:
(1) fundamentally changed the design feature of electric main shaft,, can adapt to deep hole mill, dark chamber and processing request such as mill because the postposition of motor reduces the diameter of electric main shaft output greatly;
(2) heat that distributed of electric main shaft inner electric machine is very little to the thermal impact of electric main shaft output bearing, has reduced the thermal impact each other of motor and bearing, helps improving the working condition of bearing and increasing the service life;
(3) heat that distributed of electric main shaft inner electric machine is very little to the thermal impact of electric main shaft output, makes electric main shaft output can keep higher precision, the favourable result of use of improving;
(4) electric main axle structure compactness of the present invention, the rigidity of raising output.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the structural representation of an embodiment among the present invention.
Among the figure: the 1-rotating shaft; The 2-sealing device; 3-rigid bearing end cap; 4-first main shaft bearing; The 5-bearing outside; The 6-bearing inner sleeve; 7-second main shaft bearing; 8-rotating shaft shell; The 9-stator casing; The 10-cooling-water duct; The 11-stator winding; The 12-motor stator; The 13-rotor.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
Embodiment:
Referring to Fig. 1, the postposition type electric main shaft of this enforcement inner electric machine comprises rotating shaft shell 8, stator casing 9, motor stator 12, rotor 13 and bearing.Described bearing comprises two groups of main shaft bearings 4,7 i.e. first main shaft bearing 4 and second main shaft bearing 7, and described rotor 13 is installed in the other end of rotating shaft 1 away from output, realizes that the rotation of countershaft 1 drives; Described first main shaft bearing 4 and second main shaft bearing 7 are angular contact ball bearing, and are installed in the output of described rotating shaft 1, constitute the cantilevered support structure to described rotating shaft 1, realize the radial and axial supporting of countershaft.
Referring to Fig. 1, the shell of above-mentioned electric main shaft connects rotating shaft shell 8 by stator casing 9 and constitutes, and the cavity in described stator casing 9 is settled described motor stator 12, fixedlys connected with the inwall of stator casing 9.Described motor stator 12 and rotor 13 are installed in the rotating shaft other end away from the rotating shaft output, constitute the rear-mounted structure of main motor, when realizing driving electric main axis rotation, reduced the thermal impact each other of motor and bearing, make that electric main shaft machining accuracy is higher, more compact structure, rigidity is better.And, processing request such as mill to adapt to deep hole mill, dark chamber because the postposition of motor can reduce the diameter of electric main shaft output greatly.
What deserves to be mentioned is that be furnished with the cooling-water duct 10 of connecting cooling system on stator casing 9, internally the motor stator 12 of dress cools off; The bearing shell 5 of described first main shaft bearing 4 and second main shaft bearing 7 all is placed in the described rotating shaft overcoat 8, and the bearing inner sleeve 6 of first main shaft bearing 4 and second main shaft bearing 7 is fixed in the rotating shaft 1, by first main shaft bearing 4 and the radial and axial supporting of combination realization countershaft mutually of second main shaft bearing 7.At the front end rigid bearing end cap 3 of rotating shaft shell 8, shown in the bearing (ball) cover 3 design sealing device 2 is arranged, play the effect of sealing.
In the present embodiment, the whole external structure of described postposition type electric main shaft of motor is " bottle " formula shape, and the output outer dia of this postposition type electric main shaft of motor is convenient to adapt to processing requests such as deep hole grinds, mill in dark chamber less than its other end.
The present invention has fundamentally changed the design feature of electric main shaft, it is being realized under the normal operation of electric main shaft, the heat that electricity main shaft inner electric machine is distributed is very little to the thermal impact of electric main shaft output, to the good precision of the output that keeps electric main shaft, improve the working condition of end bearing and increase the service life favourablely, and more compact structure, rigidity are better; Simultaneously, because the postposition of inner electric machine makes electric main shaft littler near the diameter of the leading portion part of output, can better meet the needs of special workpiece processing such as deep hole grinds, mill in dark chamber.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (5)
1. postposition type electric main shaft of motor, comprise the rotating shaft shell, be arranged on rotating shaft, stator casing, motor stator in the rotating shaft shell and be arranged on rotor and bearing in the rotating shaft, it is characterized in that, described bearing comprises first main shaft bearing and second main shaft bearing of the radial and axial supporting that realizes countershaft, described first main shaft bearing and second main shaft bearing are all installed the output of rotating shaft, constitute the cantilevered support structure to described rotating shaft; End away from output in described rotating shaft is installed described motor stator and rotor, constitutes the rear-mounted structure of inner electric machine.
2. postposition type electric main shaft of motor according to claim 1 is characterized in that, described stator casing is connected with the rotating shaft shell, and the cavity in described stator casing is settled described motor stator, and described motor stator is fixedlyed connected with the inwall of stator casing.
3. postposition type electric main shaft of motor according to claim 1, it is characterized in that, described first main shaft bearing and second main shaft bearing are installed in the described rotating shaft shell, are provided with bearing (ball) cover in addition at the front end of described rotating shaft shell, are provided with a sealing device in the described bearing (ball) cover.
4. postposition type electric main shaft of motor according to claim 1 and 2 is characterized in that, also is furnished with the cooling-water duct that motor stator is cooled off on described stator casing, and described cooling-water duct is connected the cooling system of electric main shaft.
5. according to right 1 described postposition type electric main shaft of motor, it is characterized in that the whole external structure of described postposition type electric main shaft of motor is " bottle " formula shape, the output outer dia of described postposition type electric main shaft of motor is less than its other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232718A CN101710751A (en) | 2009-11-27 | 2009-11-27 | Postposition type electric main shaft of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910232718A CN101710751A (en) | 2009-11-27 | 2009-11-27 | Postposition type electric main shaft of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101710751A true CN101710751A (en) | 2010-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910232718A Pending CN101710751A (en) | 2009-11-27 | 2009-11-27 | Postposition type electric main shaft of motor |
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| CN (1) | CN101710751A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545457A (en) * | 2010-12-15 | 2012-07-04 | 江苏华雕机械有限公司 | High-speed electric spindle supported by multiple groups of bearings |
| CN108964305A (en) * | 2018-09-14 | 2018-12-07 | 青岛云深动力科技有限公司 | Motor and gas turbine including the motor |
| CN109530731A (en) * | 2018-12-29 | 2019-03-29 | 东莞司母戊精密科技有限公司 | A kind of electro spindle |
-
2009
- 2009-11-27 CN CN200910232718A patent/CN101710751A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102545457A (en) * | 2010-12-15 | 2012-07-04 | 江苏华雕机械有限公司 | High-speed electric spindle supported by multiple groups of bearings |
| CN108964305A (en) * | 2018-09-14 | 2018-12-07 | 青岛云深动力科技有限公司 | Motor and gas turbine including the motor |
| CN108964305B (en) * | 2018-09-14 | 2023-12-05 | 潍坊云深机械科技有限公司 | Motor and gas turbine comprising same |
| CN109530731A (en) * | 2018-12-29 | 2019-03-29 | 东莞司母戊精密科技有限公司 | A kind of electro spindle |
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Application publication date: 20100519 |