CN205703505U - A kind of electro spindle chiller - Google Patents
A kind of electro spindle chiller Download PDFInfo
- Publication number
- CN205703505U CN205703505U CN201620571433.7U CN201620571433U CN205703505U CN 205703505 U CN205703505 U CN 205703505U CN 201620571433 U CN201620571433 U CN 201620571433U CN 205703505 U CN205703505 U CN 205703505U
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- CN
- China
- Prior art keywords
- electro spindle
- heat pipe
- rear end
- shaft core
- housing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Auxiliary Devices For Machine Tools (AREA)
Abstract
This utility model provides a kind of electro spindle chiller, including electro spindle housing and electro spindle shaft core, the two ends of described electro spindle shaft core are rotatably connected in electro spindle housing by front end bearing and rear end bearing respectively, it is respectively arranged with a heat pipe in two ends up and down in described electro spindle housing and electro spindle shaft core, described heat pipe is serpentine configuration, the evaporator section of described heat pipe extends to rear end bearing position from position of bearings, front end, the condensation segment of described heat pipe is the part of the rear end cap exposing electro spindle housing, cooling gas circular chamber it is provided with in the rear end cap of described electro spindle housing, the condensation segment of described heat pipe stretches in cooling gas circular chamber.The beneficial effects of the utility model are that electro spindle uses heat pipe to cool down, can effectively reduce electro spindle due to the error of the caused machining accuracy of the thermal expansion of shaft core, also the rotating speed of electro spindle can be improved, the working (machining) efficiency making lathe is higher, in addition, heat pipe is set to snakelike or helical structure, and heat dispersion is more superior.
Description
Technical field
This utility model relates to electrical spindle for machine tool cooling technology field, especially relates to a kind of electro spindle chiller.
Background technology
Existing high-speed main spindle is mainly by adding cooling oil in main shaft housing, and constantly circulates, and heat is taken away,
Cool down.Its basic cooling route is: first flow out cooling oil from main shaft cooling oil temperature controller, through near front
The water inlet of end cap, cooling oil enters the periphery of front end bearing, cools down front end bearing.Then flow to main shaft stator and
Rear end bearing cools down, and finally flows back to main shaft cooling oil temperature controller from outlet and completes circulation.China existing high speed master
Axle cools down, and is substantially and is carried out by this form.
Electro spindle has three big thermals source: the loss of built-in motor is generated heat, motor rotor high-speed stirring in main shaft housing
Dynamic, make the air heating in inner chamber and the frictional heating of rolling bearing.Owing to spindle drive motor two ends are exactly main shaft bearing, electronic
The heating of machine can directly reduce the operating accuracy of bearing, if the heat radiation of motor solves bad, it will have influence on lathe worker
The reliability and stability made.Finite element analysis shows, the stator of electro spindle and rotor are two big thermals source of electro spindle.Therefore,
Generally at the exterior design cooling system of stator winding, absorb with circulating cooling liquid and take away the heat that stator distributes, keeping
The uniform Temperature Distribution of main axle unit housing.Produce it addition, there are about the caloric value of 1/3 by rotor, rotor heat sink strip
Part is poor, is directly installed on again on main shaft, should reduce motor heat transfer resistance radially as far as possible, make the caloric value of rotor to the greatest extent may be used in design
How can be passed in stator and housing by air gap, and be taken away by coolant.
Heat pipe is by working medium being sealed in fine vacuum cavity, relies on the phase transformation of working medium to conduct heat, and its work is even
Continue, can be by amount of heat by the least sectional area long-distance transmissions and without additionaling power, owing to there is no the fortune lost efficacy
Row parts, so heat pipe runs the most reliable.Employing heat pipe cools down, and cooling pipe is all placed in housing, the most both can guarantee that
Main axle structure succinct, will not reduce again the rigidity of housing.
Summary of the invention
The purpose of this utility model is to provide a kind of electro spindle chiller, by arrange in housing and shaft core snakelike or
Spiral heat pipe, effectively cools down electro spindle, improves its service behaviour.
The technical solution of the utility model is: a kind of electro spindle chiller, including electro spindle housing and electro spindle shaft core,
The two ends of described electro spindle shaft core are rotatably connected in electro spindle housing by front end bearing and rear end bearing respectively, and described electricity is main
Being respectively arranged with a heat pipe in two ends up and down in shaft housing and electro spindle shaft core, described heat pipe is snakelike or spiral type knot
Structure, the evaporator section of described heat pipe extends to rear end bearing position from position of bearings, front end, and the condensation segment of described heat pipe is
Expose the part of the rear end cap of electro spindle housing, in the rear end cap of described electro spindle housing, be provided with cooling gas circular chamber, institute
State the condensation segment of heat pipe and stretch in cooling gas circular chamber, at the air inlet of described cooling gas circular chamber by air duct with
The gas outlet of refrigeration machine connects, and the air inlet of described refrigeration machine is connected with the gas outlet cooling down gas circular chamber, described in supply gas
Pressue device it is additionally provided with on pipeline.
Heat pipe, as the efficient heat transfer element of one, has the characteristic being different from other heat transfer components and parts.By the skill of heat pipe
Art cools down for high-speed machine tool electro spindle, and the following several dot characteristics being primarily due to heat pipe provide for realizing electro spindle cooling control
Feasibility: (1) efficient heat conductivity: inside heat pipe is mainly by hydraulic fluid vapour, liquid phase-change heat transfer, and thermal resistance is the least, therefore has
The highest capacity of heat transmission, compared with the metals such as silver, copper, aluminum, the heat pipe of Unit Weight can transmit the heat of several order of magnitude more；
(2) thermo-responsive speed is fast: owing to inside heat pipe is vacuum, pressure is the least, and therefore the startup temperature difference of heat pipe is the least, as long as
The temperature of evaporator section is slightly higher than the temperature of its condensation segment, and heat pipe will quickly respond, regulation evaporator section temperature and condensation segment temperature
Temperature difference between degree；(3) in pipe, Temperature Distribution is highly uniform: tube surface temperature is to be controlled by the vapor (steam) temperature in vacuum
, and each several part thermal resistance of inside heat pipe is the least, and little by variations in temperature, when adding thermal change, heat pipe evaporator section and condensation
The temperature of section also can occur even variation.
This utility model has the advantage that with good effect:
1, electro spindle uses heat pipe to cool down, and can effectively reduce electro spindle and be processed essence owing to the thermal expansion of shaft core causes
The error of degree, in the case of electrical spindle for machine tool can bear, also can further improve the rotating speed of main shaft, make the processing of lathe
In hgher efficiency, the thermal expansion of electric mainshaft bearing can also be alleviated simultaneously, improve the service life of bearing；
2, heat pipe is set to snakelike or helical structure, has bigger heat transfer area compared to general directly-heated pipe, can
By in electro spindle housing and the heat of shaft core fully absorbs and transmits, heat dispersion is more superior.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure:
1, electro spindle housing 2, electro spindle shaft core 3, front end bearing
4, rear end bearing 5, heat pipe 6, cooling gas circular chamber
7, air duct 8, refrigeration machine 9, pressue device
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is elaborated.
As it is shown in figure 1, this utility model one electro spindle chiller, including electro spindle housing 1 and electro spindle shaft core 2,
The two ends of described electro spindle shaft core 2 are rotatably connected in electro spindle housing 1 by front end bearing 3 and rear end bearing 4 respectively, described
Being respectively arranged with a heat pipe 5 in two ends up and down in electro spindle housing 1 and electro spindle shaft core 2, described heat pipe 5 is snakelike knot
Structure, the evaporator section of described heat pipe 5 extends to rear end bearing 4 position, the condensation of described heat pipe 5 from front end bearing 3 position
Section is the part of the rear end cap exposing electro spindle housing 1, is provided with cooling gas circulation in the rear end cap of described electro spindle housing 1
Room 6, the condensation segment of described heat pipe 5 stretches in cooling gas circular chamber 6, passes through at the air inlet of described cooling gas circular chamber 6
Air duct 7 is connected with the gas outlet of refrigeration machine 8, the air inlet of described refrigeration machine 8 and the gas outlet phase cooling down gas circular chamber 6
Connection, described air duct 7 is additionally provided with pressue device 9.Shown in accompanying drawing 13 heat pipe is serpentine configuration, in reality
In implementation process, the shape of 3 heat pipes can select, as the heat pipe in electro spindle shaft core can set in snakelike or spiral type
Being set to helical structure, two heat pipes in electro spindle housing may be configured as serpentine configuration.
The work process of this example: snakelike by 3 or helical structure heat pipe 5 is respectively charged into electro spindle housing 1 and electricity
In main shaft shaft core 2, the part that heat pipe 5 corresponds to bearing 3 to rear end bearing 4 position, front end is all set to evaporator section, will expose
Heat pipe section at rear end cap is set to condensation segment, and the cooling air in refrigeration machine 8 is by pressurization, from the rear end of electro spindle housing 1
The air inlet of the cooling gas circular chamber 6 in lid flows to, and finally flows out from gas outlet and is recycled to refrigeration machine 8 again cool down.
When lathe works, once produce heat at heat pipe 5 evaporator section, the steam within heat pipe 5 will be run through and take condensation segment to,
And meet cold air at condensation segment, and will rapidly and exchange of cold air takes away heat, it is ensured that the temperature constant state of electro spindle, utilize height
The heat pipe for thermal conductivity technology of effect, can take away rapidly the heat on electric spindle motor and main shaft bearing, can effectively control temperature rise, maximum
The machining accuracy error that the minimizing of limit causes due to electro spindle thermal expansion, simultaneously the most also will improve making of axle itself and main shaft bearing
With the life-span, additionally, the snakelike or heat pipe of helical structure, compared to general directly-heated pipe, there is bigger heat transfer area, can be by
Interior and shaft core the heat of electro spindle housing fully absorbs and transmits, and heat dispersion is more superior.
Above an embodiment of the present utility model is described in detail, but described content is the most of the present utility model
Preferred embodiment, it is impossible to be considered for limiting practical range of the present utility model.All made according to this utility model application range
Impartial change and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (1)
1. an electro spindle chiller, including electro spindle housing and electro spindle shaft core, the two ends of described electro spindle shaft core are respectively
It is rotatably connected in electro spindle housing by front end bearing and rear end bearing, it is characterised in that: upper in described electro spindle housing
Being respectively arranged with a heat pipe in lower two ends and electro spindle shaft core, described heat pipe is snakelike or helical structure, described heat pipe
Evaporator section extend to rear end bearing position from position of bearings, front end, the condensation segment of described heat pipe is for exposing electro spindle shell
The part of the rear end cap of body, is provided with cooling gas circular chamber, the condensation of described heat pipe in the rear end cap of described electro spindle housing
Section stretches in cooling gas circular chamber, giving vent to anger by air duct and refrigeration machine at the air inlet of described cooling gas circular chamber
Mouth connects, and the air inlet of described refrigeration machine is connected with the gas outlet of cooling gas circular chamber, and described air duct also sets up
There is pressue device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620571433.7U CN205703505U (en) | 2016-06-13 | 2016-06-13 | A kind of electro spindle chiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620571433.7U CN205703505U (en) | 2016-06-13 | 2016-06-13 | A kind of electro spindle chiller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205703505U true CN205703505U (en) | 2016-11-23 |
Family
ID=57305088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620571433.7U Expired - Fee Related CN205703505U (en) | 2016-06-13 | 2016-06-13 | A kind of electro spindle chiller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205703505U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457606A (en) * | 2017-09-14 | 2017-12-12 | 西安交通大学 | Cooling structure and temperature cooperative control system inside and outside a kind of moving load with high speed electro spindle |
| CN109571135A (en) * | 2019-01-14 | 2019-04-05 | 南通国盛智能科技集团股份有限公司 | A kind of gantry main shaft pressure cooling structure |
| CN110727295A (en) * | 2018-07-17 | 2020-01-24 | 高文虎 | Intelligent low-temperature gas cooling safety monitoring temperature-regulating circulating system |
| CN113770396A (en) * | 2021-09-13 | 2021-12-10 | 浙江景耀数控科技有限公司 | Hollow inner-cooling high-speed boring and milling main shaft head |
-
2016
- 2016-06-13 CN CN201620571433.7U patent/CN205703505U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107457606A (en) * | 2017-09-14 | 2017-12-12 | 西安交通大学 | Cooling structure and temperature cooperative control system inside and outside a kind of moving load with high speed electro spindle |
| CN107457606B (en) * | 2017-09-14 | 2019-10-11 | 西安交通大学 | Cooling structure and temperature cooperative control system inside and outside a kind of moving load with high speed electro spindle |
| CN110727295A (en) * | 2018-07-17 | 2020-01-24 | 高文虎 | Intelligent low-temperature gas cooling safety monitoring temperature-regulating circulating system |
| CN109571135A (en) * | 2019-01-14 | 2019-04-05 | 南通国盛智能科技集团股份有限公司 | A kind of gantry main shaft pressure cooling structure |
| CN109571135B (en) * | 2019-01-14 | 2024-01-19 | 南通国盛智能科技集团股份有限公司 | Forced cooling structure of gantry main shaft |
| CN113770396A (en) * | 2021-09-13 | 2021-12-10 | 浙江景耀数控科技有限公司 | Hollow inner-cooling high-speed boring and milling main shaft head |
| CN113770396B (en) * | 2021-09-13 | 2022-11-08 | 浙江景耀数控科技有限公司 | Hollow inner-cooling high-speed boring and milling spindle head |
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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: 20161123 Termination date: 20170613 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |