CN110774052B - Air-cooled cooling device of electric main shaft - Google Patents
Air-cooled cooling device of electric main shaft Download PDFInfo
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- CN110774052B CN110774052B CN201910989170.XA CN201910989170A CN110774052B CN 110774052 B CN110774052 B CN 110774052B CN 201910989170 A CN201910989170 A CN 201910989170A CN 110774052 B CN110774052 B CN 110774052B
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- heat dissipation
- fan blade
- spindle
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- core
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- 238000001816 cooling Methods 0.000 title claims abstract description 34
- 230000017525 heat dissipation Effects 0.000 claims abstract description 82
- 230000000712 assembly Effects 0.000 claims description 4
- 238000000429 assembly Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 4
- 239000003570 air Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000003754 machining Methods 0.000 description 5
- 230000035508 accumulation Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention provides an air-cooled cooling device of an electric spindle, which comprises a spindle body and a spindle shaft core, wherein the spindle shaft core is fixed in the spindle body, one end of the spindle shaft core is provided with a heat dissipation cavity, a plurality of heat dissipation devices are fixed in the heat dissipation cavity, and a fan blade assembly for dissipating heat of the spindle shaft core is also fixed at the cavity opening of the heat dissipation cavity, and the air-cooled cooling device of the electric spindle can achieve the purpose of rapid heat conduction through the heat dissipation devices in the heat dissipation cavity, and can be matched with the fan blade assembly arranged at the cavity opening of the heat dissipation cavity to ensure that the fan blade assembly rotates together with the spindle shaft core to generate convection, can directly carry out strong convection cooling on the inner surface and the end part of the spindle shaft core, so that the heat on the heat dissipation devices can be rapidly taken away by the surrounding air, the problem of heat accumulation at the end part of the spindle shaft core, thereby ensuring the processing precision of the spindle core.
Description
Technical Field
The invention relates to the technical field of electric spindles of numerically controlled lathes, in particular to an air cooling device for an electric spindle.
Background
At present, in the technical field of spindle cooling, except for a central water outlet type shaft core cooling structure designed for an electric spindle of a high-speed machining center, other types of spindles basically only cool a shell, and almost rarely do cooling structures for a shaft core, however, heat of a bearing part and heat of a stator of an electric spindle motor are respectively conducted to the shaft core part through a contact surface of an inner track of a bearing and an air gap of a stator/rotor, so that the front nose end of the spindle is thermally extended, and machining precision, repetition precision and stability of the spindle machining process are affected.
The utility model discloses an application number is 201120387962.9's utility model discloses a carpenter carving mills with its fan-cooling automatic tool changing electricity main shaft, the device establishes the fan at the casing rear end and forces the convection current, though this forced air cooling structure is generally used to present ordinary motor, but simply be applied to on the electricity main shaft with fan unit, can reduce main shaft high accuracy bearing's sealed barrier propterty on the one hand, on the other hand, this structure is by afterbody to front end convection current, can not effectively solve main shaft axle core heat dissipation problem, especially front end heat dissipation problem.
The utility model discloses a utility model application number 201620995313.X discloses a radial heat abstractor of main shaft casing, and this device can improve the heat conduction, the radiating effect of main shaft casing, but can not solve the heat dissipation problem of main shaft axle core.
The utility model discloses an application number is 201420779564.5's utility model discloses an air-cooled cooling system of miniature high-speed electric main shaft, this system establishes the air-cooled runner on the casing and lets in gas, though this scheme can reduce the temperature of spindle motor air gap department to a certain extent, but can increase an extra runner simultaneously, correspondingly can reduce the space of other runners (for example lubricated, airtight) of main shaft, on the other hand this structure can only produce the convection cooling effect to the temperature at electric motor rotor position, can not solve the problem of the heat gathering of tip position before the axle core.
Utility model patent application No. 20162131167.X discloses a spindle core outer surface spiral airflow channel cooling device, which can reduce the temperature of the electric spindle motor rotor part to a certain extent, but can not solve the problem of heat accumulation at the front end part of the spindle core.
The utility model discloses an application number is 201420404866.4's utility model discloses an axle core inner chamber rear end fan blade structure, though the air current that the device fan blade produced is by the convection current of main shaft afterbody to the front end, and axle core afterbody temperature rise reduces to some extent, but the heat convection direction is flowed to the front end by the afterbody, can increase the heat of main shaft front end on the contrary, and smooth axle core internal surface simultaneously, the heat of taking away the axle core internal surface to the convection current is very limited.
Disclosure of Invention
In view of the above, the present invention provides an air-cooled cooling device for an electric spindle, which can achieve the purpose of rapid heat conduction through a heat dissipation device inside a heat dissipation cavity, and meanwhile, in cooperation with a fan blade assembly disposed at a cavity opening of the heat dissipation cavity, the fan blade assembly rotates together with a spindle core to generate convection, so that strong convection cooling can be directly performed on an inner surface and an end portion of the spindle core, heat on the heat dissipation device is rapidly taken away by ambient air, the problem of heat accumulation at the end portion of the spindle core is effectively dissipated, the purpose of rapid heat dissipation is achieved, and further, the processing accuracy of the spindle core is ensured.
The purpose of the invention is realized by the following technical scheme:
the embodiment of the invention provides an air cooling device of an electric spindle, which comprises a spindle machine body and a spindle shaft core, wherein the spindle shaft core is fixed in the spindle machine body, one end of the spindle shaft core is provided with a heat dissipation cavity, a plurality of heat dissipation devices are fixed in the heat dissipation cavity, and a fan blade assembly for dissipating heat of the spindle shaft core is further fixed at a cavity opening of the heat dissipation cavity.
Furthermore, the heat dissipation device is provided with a plurality of heat dissipation cavities which are radially distributed on the inner wall of the heat dissipation cavity.
Furthermore, the heat dissipation device is a strip-shaped heat dissipation strip and is integrally arranged with the spindle core.
Furthermore, the fan blade assembly is provided with a plurality of, and a single fan blade assembly is fixed on the heat dissipation device.
Furthermore, the fan blade assembly comprises a blade and a fan blade base, and the blade is fixed on the fan blade base.
Furthermore, the blades are arranged in a three-dimensional curved surface shape.
Furthermore, the central part of the fan blade base is provided with a through hole for fixing the fan blade assembly.
Furthermore, a threaded hole for fixing the fan blade assembly is further formed in each heat dissipation device, the size of the threaded hole is matched with that of the through hole, and the fan blade assembly penetrates through the through hole and the threaded hole through a fixing piece and is fixed on the heat dissipation device.
Furthermore, the heat dissipation device is provided with a plurality of heat dissipation cavities which are uniformly distributed on the inner wall of the heat dissipation cavity in a circumferential mode.
Furthermore, the heat dissipation device is distributed on the inner wall of the heat dissipation cavity in a spiral manner.
Compared with the prior art, the invention has the following beneficial effects: because the heat dissipation chamber has been seted up to the one end at main shaft axle core, and be provided with heat abstractor in the heat dissipation intracavity of main shaft axle core, can the heat conduction ability of effectual improvement main shaft axle core tip, reach quick heat conduction's purpose, the cooperation sets up the fan blade subassembly in heat dissipation chamber cavity mouth department simultaneously, make fan blade subassembly produce the convection current along with main shaft axle core corotation, can directly carry out strong convection cooling to main shaft axle core internal surface and tip, make the heat on the heat abstractor taken away by surrounding air rapidly, the problem of effectual dispersion main shaft axle core tip heat gathering, reach quick radiating purpose, and then guarantee the machining precision of main shaft axle core.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a sectional view of an air-cooling apparatus for an electric spindle according to an embodiment of the present invention.
Fig. 2 is a side view of an air-cooling apparatus for an electric spindle according to an embodiment of the present invention.
Fig. 3 is a perspective view of a spindle core according to an embodiment of the present invention.
Fig. 4 is a side view of the spindle core according to the first embodiment of the present invention.
Fig. 5 is a perspective view of a fan blade assembly according to a first embodiment of the present invention.
Fig. 6 is a front view of a fan blade assembly according to a first embodiment of the present invention.
Fig. 7 is a sectional view of an air-cooling device for an electric spindle according to a second embodiment of the present invention.
The figure includes: the fan blade assembly comprises a main shaft body 1, a main shaft core 2, a heat dissipation cavity 3, a heat dissipation device 4, a threaded hole 41, a fan blade assembly 5, a fan blade base 51, blades 52 and a through hole 53.
Detailed Description
The invention is further described with reference to the following examples.
Example one
As shown in fig. 1-2, an embodiment of the present invention provides an air-cooled cooling device for an electric spindle, including a spindle body 1 and a spindle core 2, the spindle core 2 is fixed in the spindle body 1, one end of the spindle core 2 is provided with a heat dissipation cavity 3, a plurality of heat dissipation devices 4 are fixed in the heat dissipation cavity 3, a fan blade assembly 5 for dissipating heat from the spindle core 2 is further fixed at a cavity opening of the heat dissipation cavity 3, the heat conduction capability of the end portion of the spindle core 2 can be effectively improved through the heat dissipation devices 4 arranged in the heat dissipation cavity 3, so as to achieve the purpose of rapid heat conduction, and the fan blade assembly 5 arranged at the cavity opening of the heat dissipation cavity 3 is matched, so that the fan blade assembly 5 rotates together with the spindle core 2 to generate convection, and can directly perform strong convection cooling on the inner surface of the spindle core 2 and the end portion thereof, so that heat on the heat dissipation devices can, the problem of the 2 tip heat accumulations of effectual dispersion main shaft axle core reaches quick radiating purpose, and then guarantees the machining precision of main shaft axle core 2.
As shown in fig. 3-4, in the preferred embodiment, the heat dissipation device 4 is provided with a plurality of heat dissipation devices radially distributed on the inner wall of the heat dissipation cavity 3, which can effectively increase the heat conduction capability of the front end of the spindle core 2.
As shown in fig. 3-4, in the preferred embodiment, the heat sink 4 is a strip-shaped heat sink strip and is integrally disposed with the spindle core 2, so as to ensure the connection strength between the heat sink 4 and the spindle core 2 and improve the heat conduction effect.
As shown in fig. 5-6, in a preferred embodiment, the fan assembly 5 is provided in plural, and a single fan assembly 5 is fixed on the heat sink 4, so that the heat dissipation efficiency can be effectively improved by the plural fan assemblies 5.
As shown in fig. 5-6, in a preferred embodiment, the fan blade assembly 5 includes a blade 52 and a fan blade base 51, the blade 52 is fixed on the fan blade base 51, so that the fan blade 52 rotates together with the spindle core 2, an axial airflow from the front end to the tail end of the spindle core 2 is generated under the action of the curved surface cutting airflow of the blade 52, the airflow firstly flows through a radial heat dissipation structure designed at the front end of the spindle core 2, and the heat of the front end surface is taken away through forced convection of the airflow, so that the front end surface of the spindle core 2 has a certain cooling effect.
In the preferred embodiment, as shown in fig. 5, the blades 52 are disposed in a three-dimensional curved shape, so that the spindle core 2 generates fluid from the front end to the rear end when rotating in the forward direction.
As shown in fig. 6, in the preferred embodiment, a through hole 53 for fixing the fan blade assembly 5 is formed in the center of the fan blade base 51, the direction of a is the rotation direction of the fan blade 52, and the direction of B is the flowing direction of the airflow.
As shown in fig. 4, in a preferred embodiment, a threaded hole 41 for fixing the fan blade assembly 5 is further formed in the single heat dissipation device 4, the size of the threaded hole 41 is matched with that of the through hole 53, the fan blade assembly 5 is fixed to the heat dissipation device 4 by penetrating through the through hole 53 and the threaded hole 41 through a fixing member, and further, the fixing member is a bolt, so that the fan blade assembly 5 can be effectively fixed to the heat dissipation device 4.
In the preferred embodiment, the heat dissipation device 4 is spirally distributed on the inner wall of the heat dissipation cavity 3, so that the heat conduction direction of the heat dissipation device 4 is changed, and the heat dissipation effect is better.
Example two
As shown in fig. 7, the present embodiment is different from embodiment 1 in that: the heat dissipation device 4 is provided with a plurality of inner walls which are uniformly distributed on the inner wall of the heat dissipation cavity 3 in a circumferential mode, and the heat dissipation device 4 and the inner wall of the heat dissipation cavity 3 are integrally formed.
The benefit of this embodiment is, changes heat abstractor 4's shape into the circumferencial shape, and then makes heat abstractor 4 also to the circumferencial direction heat conduction in the heat conduction in-process, cooperates fan blade assembly 5's circumferential motion simultaneously for the heat on the circumferencial direction can be effectual in the air of effluvium, improves the radiating effect by a wide margin.
The invention has the following beneficial effects: because the heat dissipation chamber has been seted up to the one end at main shaft axle core, and be provided with heat abstractor in the heat dissipation intracavity of main shaft axle core, can the heat conduction ability of effectual improvement main shaft axle core tip, reach quick heat conduction's purpose, the cooperation sets up the fan blade subassembly in heat dissipation chamber cavity mouth department simultaneously, make fan blade subassembly produce the convection current along with main shaft axle core corotation, can directly carry out strong convection cooling to main shaft axle core internal surface and tip, make the heat on the heat abstractor taken away by surrounding air rapidly, the problem of effectual dispersion main shaft axle core tip heat gathering, reach quick radiating purpose, and then guarantee the machining precision of main shaft axle core.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. The utility model provides an electricity forced air cooling device of main shaft, is including main shaft organism and main shaft axle core, the main shaft axle core is fixed in the main shaft organism, its characterized in that: the spindle shaft core is characterized in that a heat dissipation cavity is formed in one end of the spindle shaft core, a plurality of heat dissipation devices are fixed in the heat dissipation cavity, a plurality of fan blade assemblies for dissipating heat of the spindle shaft core are further fixed at the cavity opening of the heat dissipation cavity, the fan blade assemblies are multiple, one fan blade assembly is fixed on each heat dissipation device, and the fan blade assemblies rotate together with the spindle shaft core to generate convection.
2. An air-cooled cooling apparatus for an electric spindle as claimed in claim 1, wherein: the heat dissipation device is provided with a plurality of heat dissipation cavities which are radially distributed on the inner wall of the heat dissipation cavity.
3. An air-cooled cooling apparatus for an electric spindle according to claim 2, wherein: the heat dissipation device is a strip-shaped heat dissipation strip and is integrally arranged with the spindle core.
4. An air-cooled cooling apparatus for an electric spindle as claimed in claim 1, wherein: the fan blade assembly comprises a blade and a fan blade base, and the blade is fixed on the fan blade base.
5. An air-cooled cooling apparatus for an electric spindle according to claim 4, wherein: the blades are arranged in a three-dimensional curved surface shape.
6. An air-cooled cooling apparatus for an electric spindle according to claim 4, wherein: the central part of the fan blade base is provided with a through hole for fixing the fan blade assembly.
7. An air-cooled cooling apparatus for an electric spindle according to claim 6, wherein: and the single heat dissipation device is also provided with a threaded hole for fixing a fan blade assembly, the size of the threaded hole is matched with that of the through hole, and the fan blade assembly penetrates through the through hole and the threaded hole through a fixing piece and is fixed on the heat dissipation device.
8. An air-cooled cooling apparatus for an electric spindle as claimed in claim 1, wherein: the heat dissipation device is provided with a plurality of heat dissipation cavities which are uniformly distributed on the inner wall of the heat dissipation cavity in a circumferential mode.
9. An air-cooled cooling apparatus for an electric spindle as claimed in claim 1, wherein: the heat dissipation device is spirally distributed on the inner wall of the heat dissipation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989170.XA CN110774052B (en) | 2019-10-17 | 2019-10-17 | Air-cooled cooling device of electric main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910989170.XA CN110774052B (en) | 2019-10-17 | 2019-10-17 | Air-cooled cooling device of electric main shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110774052A CN110774052A (en) | 2020-02-11 |
| CN110774052B true CN110774052B (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910989170.XA Active CN110774052B (en) | 2019-10-17 | 2019-10-17 | Air-cooled cooling device of electric main shaft |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115365523B (en) * | 2022-08-04 | 2024-01-26 | 无锡市荣华机械制造有限公司 | Constant-power engraving and milling electric spindle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870071A (en) * | 2009-04-24 | 2010-10-27 | 上海舒平精工机械有限公司 | Built-in cooling device of high-speed rotary main shaft |
| CN205565973U (en) * | 2016-03-05 | 2016-09-07 | 鹰潭市睿驰电机有限公司 | Motor shell and DC Brushless motor with heat dissipation function |
| CN206767332U (en) * | 2017-05-08 | 2017-12-19 | 亚星线缆集团有限公司 | A kind of high intensity cable shafts with fin radiating |
| CN107626935A (en) * | 2017-09-26 | 2018-01-26 | 广州市昊志机电股份有限公司 | A kind of main shaft device of built-in wind cooling system |
| CN207709891U (en) * | 2017-12-12 | 2018-08-10 | 广州市昊志机电股份有限公司 | Lathe spindle air-cooled structure |
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