CN204381972U - A kind of air cooling system of miniature high-speed electro spindle - Google Patents
A kind of air cooling system of miniature high-speed electro spindle Download PDFInfo
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- CN204381972U CN204381972U CN201420779564.5U CN201420779564U CN204381972U CN 204381972 U CN204381972 U CN 204381972U CN 201420779564 U CN201420779564 U CN 201420779564U CN 204381972 U CN204381972 U CN 204381972U
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- cooling bath
- casing
- inlet channel
- electro spindle
- top cover
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Abstract
The utility model discloses a kind of air cooling system of miniature high-speed electro spindle, comprise body and be installed in the axle core component on body axis, stator is provided with in body, body comprises casing and top chock, the top of top chock is provided with top cover, and the bottom of body is provided with drive end bearing bracket and the lower end endoporus for installing lower bearing; Be provided with inlet channel and exhaust passage in described body, between described top chock and the fitting surface of casing, be provided with the first cooling bath; Spiral cooling bath is provided with between described stator and the fitting surface of casing; The second cooling bath is provided with between the fitting surface of lower bearing and lower end endoporus; Be provided with hermetic seal passage in drive end bearing bracket, the exhaust outlet of this hermetic seal passage is just in communication with the outside axle core component outer surface.Refrigerating gas directly can pass into the second cooling bath and cool lower bearing, and the heat of the first cooling bath and spiral cooling bath can not take in the second cooling bath, and emphasis improves the cooling effect to lower bearing, thus improves the cooling effect of whole electro spindle.
Description
Technical field
The utility model relates to the cooling system of electro spindle, particularly relates to a kind of air cooling system of miniature high-speed electro spindle.
Background technology
Miniature high-speed electro spindle is a kind of delicate machine tools main shaft, and along with the development of technology, it is just fast-developing towards direction that is more miniaturized, more height.Electro spindle, when normally working, owing to there is the assembly run up, therefore generates heat more severe, usually needs to offer cooling system in electro spindle inside; Due to the restriction that volume is little, the mode of air-cooled cooling generally can only be selected.But, electro spindle cooling effect on existing market is undesirable, there is cooling duct design unreasonable, the object of main shaft internal heat being taken in time out of main shaft cannot be reached, therefore the rotating shaft of main shaft is usually had by thermal deformation, affect machining accuracy, even scrap, or have the phenomenon of burning other electric elements to occur.
In view of this, be badly in need of a kind of new structural design and solve above-mentioned technical problem.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is the air cooling system providing a kind of miniature high-speed electro spindle, and the cooling duct of this cooling system is arranged more rationally, can reach better cooling effect.
For achieving the above object, the utility model adopts following technical scheme:
A kind of air cooling system of miniature high-speed electro spindle, comprise body and be installed in the axle core component on body axis, body inwall is fixed with the stator matched with axle core component, described body comprises casing and is fixed on the top chock of casing upper end, and the top of top chock is provided with top cover, the bottom of casing is provided with the lower end endoporus for installing lower bearing, and the bottom of casing is also provided with drive end bearing bracket; Inlet channel and exhaust passage is provided with in described body, described inlet channel runs through top cover, top chock, casing, lower bearing and drive end bearing bracket from top to bottom successively, casing, top chock and top cover are run through from the bottom to top successively in described exhaust passage, and are in communication with the outside at top cover place; The first cooling bath be communicated with described inlet channel is provided with between described top chock and the fitting surface of casing; Be provided with spiral cooling bath between described stator and the fitting surface of casing, the air inlet of this spiral cooling bath is connected with inlet channel, and the gas outlet of spiral cooling bath is connected with exhaust passage; The second cooling bath be communicated with inlet channel is provided with between lower bearing outer ring and the fitting surface of lower end endoporus; Be provided with hermetic seal passage in described drive end bearing bracket, the exhaust outlet of this hermetic seal passage is just in communication with the outside axle core component outer surface.
Further, described inlet channel is positioned at a section of casing and is divided into two vertical branch roads, and be respectively the first branch road and the second branch road, this first branch road is communicated with by described first cooling bath with the second branch road; The end of described first branch road is communicated with described spiral cooling bath, described second branch road to extend downward in lower bearing and drive end bearing bracket and successively with the second cooling bath and hermetic seal channel connection.
Further, described top cover upper end is also provided with the snap joint be connected with the entrance of described inlet channel.
Further, the exhaust outlet of described exhaust passage is opened in top cover, and this exhaust outlet along top cover radially outward.
Further, the exhaust ports of described exhaust passage is provided with anechoic sheet.
Compared to prior art, the utility model has following advantage:
By the second cooling bath between design lower bearing outer ring and lower end endoporus, compressed air can be made directly to cool lower bearing surface, and the heat of the first cooling bath and spiral cooling bath can not take in the second cooling bath, overcome defect not good to lower bearing cooling effect in prior art; By designing spiral cooling bath between stator and casing, the contact area of compressed air and stator surface can be increased, drastically increase cooling effect; In addition, by arranging hermetic seal passage in drive end bearing bracket, stability air curtain can be formed in axle core lower end, can not only drive end bearing bracket be cooled, the effect preventing foreign object from dropping into main shaft inside can also be played.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of the air cooling system of a kind of miniature high-speed electro spindle of the utility model;
Fig. 2 is the longitudinal sectional view of another angle of the utility model;
Fig. 3 is the longitudinal sectional view of the another angle of the utility model.
Wherein: 1, rotating shaft; 2, rotor; 3, stator; 31, spiral cooling bath; 4, casing; 41, inlet channel; 411, the first branch road; 412, the second branch road; 42, exhaust passage; 5, top chock; 51, the first cooling bath; 6, lower bearing; 61, the second cooling bath; 7, top cover; 71, anechoic sheet; 8, drive end bearing bracket; 81, hermetic seal passage; 9, snap joint.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the utility model is described further:
Refer to Fig. 1 to Fig. 3, it is the air cooling system of a kind of miniature high-speed electro spindle of the utility model, comprises body and is installed in the axle core component on body axis, and described axle core component comprises rotating shaft 1 and is fixed on the rotor 2 in rotating shaft 1; Body inwall is fixed with the stator 3 matched with axle core component, described body comprises casing 4 and is fixed on the top chock 5 of casing 4 upper end, and the top of top chock 5 is provided with top cover 7, the bottom of casing 4 is provided with the lower end endoporus (not indicating in figure) for installing lower bearing 6, and the bottom of casing 4 is provided with drive end bearing bracket 8; Inlet channel 41 and exhaust passage 42 is provided with in described body, described inlet channel 41 runs through top cover 7, top chock 5, casing 4, lower bearing 6 and drive end bearing bracket 8 from top to bottom successively, described exhaust passage 42 runs through casing 4, top chock 5 and top cover 7 from the bottom to top successively, and is in communication with the outside at top cover 7 place; The first cooling bath 51 be communicated with described inlet channel 41 is provided with between described top chock 5 and the fitting surface of casing 4, this first cooling bath 51 extends along the outer surface of top chock 5, in annular, gas, through the first cooling bath 51, can cool top chock 5 and associated component; Spiral cooling bath 31 is provided with between described stator 3 and the fitting surface of casing 4, this spiral cooling bath 31 is along the equally spaced distribution of stator 3 outer surface, the air inlet of spiral cooling bath 31 is connected with inlet channel 41, its gas outlet is connected with exhaust passage 42, in the present embodiment, the air inlet of spiral cooling bath 31 is positioned at the below of gas outlet, and air inlet position is lower than gas outlet position; Flow through next Compressed Gas while spiral cooling bath 31 from inlet channel 41, with heating stator 3, heat exchange occurs, and take out of main shaft from exhaust passage 42 rapidly, this design can drain the heat of main shaft inside in time, is conducive to improving cooling effect.
The second cooling bath 61 be communicated with inlet channel 41 is provided with between described lower bearing 6 outer ring and the fitting surface of lower end endoporus, Compressed Gas can to go directly lower bearing 6 via inlet channel 41, it is cooled, overcomes defect not good for lower bearing 6 cooling effect in prior art; From the above, the main feature of cooling duct of the present utility model design is: refrigerating gas directly can pass into the second cooling bath 61 pairs of lower bearing 6 outer rings and cool, the heat of the first cooling bath 51 and spiral cooling bath 31 can not take in the second cooling bath 61, and lower bearing 6 therefore can be made to obtain better cooling effect.
Hermetic seal passage 81 is provided with in described drive end bearing bracket 8, the exhaust outlet of this hermetic seal passage 81 is just in communication with the outside axle core component (being specially rotating shaft 1) outer surface, after compressed air enters hermetic seal passage 81 from inlet channel 41, blow to the outer surface of described rotating shaft 1, and eventually under, outwardly blow out, form air curtain in rotating shaft 1 and the gap location of the lower end of body, effectively prevent foreign object from falling into main shaft inside, reach the effect of dust seal.
As one of them specific embodiment, described inlet channel 41 is positioned at a section of casing 4 and is divided into two vertical branch roads, and be respectively the first branch road 411 and the second branch road 412, this first branch road 411 is communicated with by described first cooling bath 51 with the second branch road 412; The end of described first branch road 411 is communicated with described spiral cooling bath 31, is specially and is communicated with the air inlet of spiral cooling bath 31; Described second branch road 412 extends downward in lower bearing 6 and drive end bearing bracket 8 and is also communicated with the second cooling bath 61 and hermetic seal passage 81 successively.
Particularly, described top cover 7 upper end is also provided with the snap joint 9 be connected with the entrance of described inlet channel 41, and it is inner that the compressed air of external air source conveniently can be imported main shaft by this snap joint 9.
Refer to Fig. 2, as further improvement, the part of described exhaust passage 42 in top cover 7 is provided with along the radially outer exhaust outlet of top cover 7, namely during main shaft vertical display, exhaust outlet is level, this design can prevent the pollutants such as dust from falling into exhaust passage 42 from top to bottom, and then enters main shaft inside; And exhaust ports is provided with anechoic sheet 71, can plays and reduce the object that main shaft runs noise.
Compared to prior art, the utility model has following advantage:
By the second cooling bath 61 between design lower bearing 6 and lower end endoporus, compressed air can be made directly to cool lower bearing 6 surface, and the heat of the first cooling bath 51 and spiral cooling bath 31 can not take in the second cooling bath 61, overcome defect not good to lower bearing 6 cooling effect in prior art; By designing spiral cooling bath 31 between stator 3 and casing 4, the contact area on compressed air and stator 3 surface can be increased, drastically increase cooling effect; In addition, by arranging hermetic seal passage 81 in drive end bearing bracket 8, stability air curtain can be formed in body lower end, drive end bearing bracket 8 can not only be cooled, the effect preventing foreign object from dropping into main shaft inside can also be played.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (5)
1. the air cooling system of a miniature high-speed electro spindle, it is characterized in that: comprise body and be installed in the axle core component on body axis, body inwall is fixed with the stator matched with axle core component, described body comprises casing and is fixed on the top chock of casing upper end, and the top of top chock is provided with top cover, the bottom of casing is provided with the lower end endoporus for installing lower bearing, and the bottom of casing is also provided with drive end bearing bracket; Inlet channel and exhaust passage is provided with in described body, described inlet channel runs through top cover, top chock, casing, lower bearing and drive end bearing bracket from top to bottom successively, casing, top chock and top cover are run through from the bottom to top successively in described exhaust passage, and are in communication with the outside at top cover place; The first cooling bath be communicated with described inlet channel is provided with between described top chock and the fitting surface of casing; Be provided with spiral cooling bath between described stator and the fitting surface of casing, the air inlet of this spiral cooling bath is connected with inlet channel, and the gas outlet of spiral cooling bath is connected with exhaust passage; The second cooling bath be communicated with inlet channel is provided with between the outer ring of lower bearing and the fitting surface of lower end endoporus; Be provided with hermetic seal passage in described drive end bearing bracket, the exhaust outlet of this hermetic seal passage is just in communication with the outside axle core component outer surface.
2. the air cooling system of miniature high-speed electro spindle as claimed in claim 1, it is characterized in that: described inlet channel is positioned at a section of casing and is divided into two vertical branch roads, be respectively the first branch road and the second branch road, this first branch road is communicated with by described first cooling bath with the second branch road; The end of described first branch road is communicated with described spiral cooling bath, described second branch road to extend downward in lower bearing and drive end bearing bracket and successively with the second cooling bath and hermetic seal channel connection.
3. the air cooling system of miniature high-speed electro spindle as claimed in claim 1 or 2, is characterized in that: described top cover upper end is also provided with the snap joint be connected with the entrance of described inlet channel.
4. the air cooling system of miniature high-speed electro spindle as claimed in claim 1, is characterized in that: the exhaust outlet of described exhaust passage is opened in top cover, and this exhaust outlet along top cover radially outward.
5. the air cooling system of the miniature high-speed electro spindle as described in claim 1 or 4, is characterized in that: the exhaust ports of described exhaust passage is provided with anechoic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779564.5U CN204381972U (en) | 2014-12-10 | 2014-12-10 | A kind of air cooling system of miniature high-speed electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420779564.5U CN204381972U (en) | 2014-12-10 | 2014-12-10 | A kind of air cooling system of miniature high-speed electro spindle |
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| Publication Number | Publication Date |
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| CN204381972U true CN204381972U (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420779564.5U Active CN204381972U (en) | 2014-12-10 | 2014-12-10 | A kind of air cooling system of miniature high-speed electro spindle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296875A (en) * | 2018-03-15 | 2018-07-20 | 无锡博华机电有限公司 | The efficient cage convection current cooling structure of electro spindle |
| CN110370075A (en) * | 2019-08-20 | 2019-10-25 | 中国科学院合肥物质科学研究院 | A kind of shell mechanism of high-speed air floatation electro spindle |
-
2014
- 2014-12-10 CN CN201420779564.5U patent/CN204381972U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296875A (en) * | 2018-03-15 | 2018-07-20 | 无锡博华机电有限公司 | The efficient cage convection current cooling structure of electro spindle |
| CN110370075A (en) * | 2019-08-20 | 2019-10-25 | 中国科学院合肥物质科学研究院 | A kind of shell mechanism of high-speed air floatation electro spindle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |