CN206764460U - A kind of electro spindle with rotor cooling - Google Patents
A kind of electro spindle with rotor cooling Download PDFInfo
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- CN206764460U CN206764460U CN201720569324.6U CN201720569324U CN206764460U CN 206764460 U CN206764460 U CN 206764460U CN 201720569324 U CN201720569324 U CN 201720569324U CN 206764460 U CN206764460 U CN 206764460U
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Abstract
A kind of electro spindle with rotor cooling is the utility model is related to, stator cooling duct is provided with sleeve；Some axial cooling ducts are provided with rotor mandrel, and cooling circuit of connecting is formed with the connection duct at axial cooling duct both ends；Double-channel rotating joint is split-type structural, is divided into stationary part and rotating part, and stationary part is fixed on loose broaching tool cylinder, and rotating part couples with rotor mandrel；Corresponding to series connection cooling circuit, feed pathway and liquid outlet channel are respectively arranged with double-channel rotating joint, feed pathway communicates with the water inlet for cooling circuit of connecting, liquid outlet channel communicates with the delivery port for cooling circuit of connecting, and feed pathway and liquid outlet channel realize sealing by multigroup sealing device between stationary part and rotating part.The utility model is simple in construction, convenient processing and manufacture, can effectively ensure that main shaft internal temperature is constant, reduces the thermal expansion length of spindle rotor, ensures that electro spindle realizes higher machining accuracy.
Description
Technical field
The utility model belongs to machine tool accessories technical field, more particularly to a kind of electro spindle with rotor cooling.
Background technology
High-speed electric main shaft due to having the advantages that compact-sized, in light weight, inertia is small, with small vibration, noise is low, response is fast,
It is widely applied in modern manufacturing industry.But because the rotor of high-speed electric main shaft is all built-in, all it is in close
In the space closed, caloric value is very big during running at high speed, and in rotor rotation process, the heat of electro spindle enclosure interior
Stream is stirred so that inner air heat is very high, easily causes the thermal stretching of electro spindle to deform, and then cause shadow to machining accuracy
Ring.According to statistics, mismachining tolerance can account for 50% or so of lathe overall error caused by electro spindle thermal stretching deforms, serious shadow
The raising of Digit Control Machine Tool machining accuracy is rung.
In the prior art, the solution method to electro spindle heating problem mainly divides three classes：First kind stator cools down, and is fixed
Cooling water channel is processed in subshell, and opens inwards into cooling liquid and is cooled down, this method can be to the heating of stator core
Good cooling effect is played, but for rotor, due to from cooling source farther out, it is impossible to reach good cooling effect；Second
Class rotor gap cools down, and is that circulating cooling gas are passed through into the air gap between rotor, directly rotor surface is carried out cold
But, because the air gap between rotor is smaller, cooling gas influx is also smaller, and preferably cooling effect is unable to reach to rotor
Fruit；3rd class is rotor cooling, has two schemes at present, first, rotor center is made into through hole, and is passed through cooling gas or liquid
Body cools down to rotor center, second, setting helicla flute on the outer circumference surface of rotor mandrel, and is passed through cooling gas to turning
Son is cooled down, and the former cooling effect to rotor mandrel is preferable, but can not reach good cooling effect to rotor core,
Although the latter has certain cooling effect to rotor core, because using gas cooling, specific heat is small, and efficiency is low, and by
It is located at rotor mandrel surface in loop, to mandrel internal cooling unobvious, and helical intake processing is inconvenient.
The content of the invention
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of simple in construction, convenient processing and manufacture,
The high electrical spindle cooling structure of cooling effectiveness, motor stator temperature rise can not only be effectively controlled, and to rotor mandrel and rotor
Iron core also has good cooling effect, is effectively ensured that main shaft internal temperature is constant, reduces the thermal expansion length of spindle rotor, ensures
Electro spindle realizes higher machining accuracy.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：One kind has rotor
The electro spindle of cooling, by sleeve, stator, rotor, fore bearing group, rear bearing group, front-end bearing pedestal, front axle pressure cap, rear axle pressure-bearing
Female, preceding closure, bonnet, loose broaching tool cylinder and double-channel rotating joint composition, stator is installed on sleeve lining, on sleeve
It is provided with stator cooling duct；The rotor being made up of rotor mandrel and rotor core is arranged concentrically in stator hole, and by preceding
Bearing group and the supporting rotation of rear bearing group；The fore bearing group is arranged in the front-end bearing pedestal of barrel forward end, passes through front axle pressure-bearing
Cover lock fastens；Bearing group is arranged at sleeve rear end afterwards, is locked by rear bearing nut；Preceding closure is installed on front-end bearing pedestal
End, and form labyrinth seal with front axle pressure cap；Bonnet is fixedly installed in sleeve rear end, and loose broaching tool cylinder couples with bonnet；
Be provided with some axial cooling ducts in the rotor mandrel, and formed with the connection duct at axial cooling duct both ends connect it is cold
But circulation loop；The double-channel rotating joint is split-type structural, is divided into stationary part and rotating part, and stationary part is fixed
In on loose broaching tool cylinder, rotating part couples with rotor mandrel；Corresponding to series connection cooling circuit, in double-channel rotating joint
Feed pathway and liquid outlet channel are respectively arranged with, feed pathway communicates with the water inlet for cooling circuit of connecting, liquid outlet channel
Communicated with the delivery port for cooling circuit of connecting, and feed pathway and liquid outlet channel divide it by stationary part and rotating part
Between multigroup sealing device realize sealing.
A kind of above-mentioned electro spindle with rotor cooling, the loose broaching tool cylinder is hollow structure.
Above-mentioned a kind of electro spindle with rotor cooling, corresponding to the stator cooling duct, respectively in sleeve and front axle
Sealing ring is provided between bearing and between sleeve and bonnet；Correspond respectively to the water inlet of the series connection cooling circuit
And delivery port, sealing ring is provided between rotor mandrel and double-channel rotating joint.
A kind of above-mentioned electro spindle with rotor cooling, covers after described and is provided with least one set of guiding gutter and discharge orifice.
Compared with prior art, the beneficial effects of the utility model are：The utility model is simple in construction, processing and manufacturing side
Just, by the cooperation of axial cooling circuit and double-channel rotating joint inside rotor mandrel, the uniform of rotor is realized
Cooling, solves the problems, such as that existing structure can not effectively cool down rotor core, with reference to the cooling structure of stator in sleeve, Neng Gouyou
Effect ensures that main shaft internal temperature is constant, reduces the thermal expansion length of spindle rotor, ensures that electro spindle realizes higher machining accuracy.
Brief description of the drawings
Fig. 1 is rotation cross-sectional view of the present utility model.
Fig. 2 is rotor rear end of the present utility model cross section structure schematic diagram.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of electro spindle with rotor cooling of the present utility model, by sleeve 8, stator 6, rotor 7, preceding
Bearing group 4, rear bearing group 9, front-end bearing pedestal 3, front axle pressure cap 1, preceding closure 2, rear bearing nut 10, bonnet 11, loose broaching tool
Cylinder 12 and double-channel rotating joint 13 form.Stator 6 is installed on the inwall of sleeve 8, by rotor mandrel 71 and rotor core
The rotors 7 of 72 compositions are arranged concentrically in stator hole, and pass through fore bearing group 4 and the supporting rotation of rear bearing group 9.Fore bearing group 4
It is arranged in the front-end bearing pedestal 3 of the front end of sleeve 8, is locked by front axle pressure cap 1；After bearing group 9 is arranged at sleeve 8 afterwards
End, is locked by rear bearing nut 10.Preceding closure 2 is installed on the end of front-end bearing pedestal 3, and is formed and be confused with front axle pressure cap 1
Palace is sealed, and sealing function is played to the stator 6 inside sleeve 8, rotor 7 and fore bearing group 4 and rear bearing group 9, meanwhile, to protect
Sealing effectiveness is demonstrate,proved, sealing ring 14 is additionally provided with the connection place of preceding closure 2 and front-end bearing pedestal 3.Bonnet 11 is fixedly installed in set
The rear end of cylinder 8, loose broaching tool cylinder 12 is installed on bonnet 11, and loose broaching tool cylinder 12 is hollow structure.It is provided with sleeve 8
For cooling down the stator cooling duct 81 of stator 6, stator cooling duct 81 is uniformly distributed along sleeve, and its inlet and outlet is arranged on bonnet
On 11, to ensure that stator cooling duct 81 seals, respectively between sleeve 8 and front-end bearing pedestal 3 and between sleeve 8 and bonnet 11
It is provided with sealing ring 5.
With reference to shown in Fig. 1 and Fig. 2, axial cooling duct 73 is provided with rotor mandrel 71, axial cooling duct 73 is parallel
It is uniformly distributed in axially, meanwhile, the both ends of axial cooling duct 73 are additionally provided with connection duct 74, and axial cooling duct 73 is with connecting
Connect duct 74 and form series connection cooling circuit together, the water inlet 75 and delivery port 76 of the series connection cooling circuit are arranged on
The rear shaft end of rotor mandrel.
Double-channel rotating joint 13 is split-type structural, is divided into rotating part 131 and stationary part 132, rotating part 131
It is connected in the shaft end of rotor mandrel 71, stationary part 132 is fixed on loose broaching tool cylinder 12.It is recycled back to corresponding to series connection cooling
Road, feed pathway 133 and liquid outlet channel 134, feed pathway 133 and cooling of connecting are respectively arranged with double-channel rotating joint 13
The water inlet 75 of circulation loop communicates, and liquid outlet channel 134 communicates with the delivery port 76 for cooling circuit of connecting, and to ensure
The sealing of connection, sealing ring 15 is respectively arranged with water inlet 75 and delivery port 76.Meanwhile feed pathway 133 and go out liquid
Passage 134 is sealed by the sealing device 135 between stationary part 132 and rotating part 131 and sealing device 136.Sealing dress
Put 135 and sealing device 136 promote clip plate 137 and outer quiet plate 138 to realize gluing, sealing by spring respectively.In addition, it is anti-
Only cooling liquid leakage is had an impact to electro spindle inside, and discharge orifice 111 is additionally provided with bonnet 11, will be not by mechanical seal
The cooling medium export electro spindle that structure is sealed.
During work, rotor 7 is in high speed rotation state, and cooling liquid enters the feed pathway of double-channel rotating joint 13
In 133, process simultaneously promotes outer quiet plate 138 axially movable, and after the gluing, sealing for realizing sealing structure 136, cooling medium is full of
Whole double-channel rotating joint 13, and then enter via water inlet 75 in the rotor 7 in rotating at a high speed, pass through axial cooling duct
73 are cooled down to rotor mandrel 71 and rotor core 72, reach the purpose of rotor mandrel 71 and the heating of rotor core 72.Cooling
Liquid enters the liquid outlet channel of double-channel rotating joint 13 in rotor 7 via series connection cooling circuit after the outflow of delivery port 76
134, sequentially through flowing out after rotating part 131, sealing device 135 and stationary part 132.Due to sealing device 135 and close
The presence of seal apparatus 136, sealing of the cooling liquid between stationary part 132 and rotating part 131 can be ensured, and prevented outer
Portion's impurity enters.By the rotor cooling structure and coordinate cooling effect of the stator cooling duct 81 to stator 6, can be main to electricity
Axle plays good cooling effect, ensures that electro spindle internal temperature is uniform, constant.
Although the utility model is described in detail above, the utility model not limited to this, art technology
Personnel can carry out various modifications according to principle of the present utility model.Therefore, all modifications made according to the utility model principle,
It all should be understood to fall into the scope of protection of the utility model.
Claims (5)
1. it is a kind of with rotor cooling electro spindle, it is characterised in that by sleeve, stator, rotor, fore bearing group, rear bearing group,
Front-end bearing pedestal, front axle pressure cap, rear bearing nut, preceding closure, bonnet, loose broaching tool cylinder and double-channel rotating joint group
Into stator is installed on sleeve lining, and stator cooling duct is provided with sleeve；Turned by what rotor mandrel and rotor core formed
Son is arranged concentrically in stator hole, and passes through fore bearing group and the supporting rotation of rear bearing group；The fore bearing group is arranged at sleeve
In the front-end bearing pedestal of front end, it is locked by front axle pressure cap；Bearing group is arranged at sleeve rear end afterwards, is locked by rear bearing nut
Fasten；Preceding closure is installed on front-end bearing pedestal end, and forms labyrinth seal with front axle pressure cap；Bonnet is fixedly installed in set
Tube rear end, loose broaching tool cylinder couple with bonnet；Be provided with some axial cooling ducts in the rotor mandrel, and with axial cooling
The connection duct at passage both ends forms series connection cooling circuit；The double-channel rotating joint is split-type structural, is divided into quiet
Stop point and rotating part, stationary part are fixed on loose broaching tool cylinder, and rotating part couples with rotor mandrel；Corresponding to series connection
Cooling circuit, feed pathway and liquid outlet channel, feed pathway and cooling of connecting are respectively arranged with double-channel rotating joint
The water inlet of circulation loop communicates, and liquid outlet channel communicates with the delivery port for cooling circuit of connecting, and feed pathway and goes out
Liquid passage realizes sealing by multigroup sealing device between stationary part and rotating part.
2. a kind of electro spindle with rotor cooling according to claim 1, it is characterised in that the loose broaching tool cylinder is
Hollow structure.
3. it is according to claim 1 or 2 it is a kind of with rotor cooling electro spindle, it is characterised in that respectively sleeve with
Sealing ring is provided between front-end bearing pedestal and between sleeve and bonnet；Correspond respectively to entering for the series connection cooling circuit
The mouth of a river and delivery port, sealing ring is provided between rotor mandrel and double-channel rotating joint.
4. a kind of electro spindle with rotor cooling according to claim 1 or 2, it is characterised in that cover and set after described
It is equipped with least one set of guiding gutter and discharge orifice.
5. a kind of electro spindle with rotor cooling according to claim 3, it is characterised in that cover and be provided with after described
At least one set of guiding gutter and discharge orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720569324.6U CN206764460U (en) | 2017-05-22 | 2017-05-22 | A kind of electro spindle with rotor cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720569324.6U CN206764460U (en) | 2017-05-22 | 2017-05-22 | A kind of electro spindle with rotor cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206764460U true CN206764460U (en) | 2017-12-19 |
Family
ID=60641754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720569324.6U Active CN206764460U (en) | 2017-05-22 | 2017-05-22 | A kind of electro spindle with rotor cooling |
Country Status (1)
| Country | Link |
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| CN (1) | CN206764460U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009193A (en) * | 2017-05-22 | 2017-08-04 | 北京精雕科技集团有限公司 | A kind of electro spindle cooled down with rotor |
| CN108687884A (en) * | 2018-04-08 | 2018-10-23 | 东莞市天精密机电有限公司 | A kind of multi output head electro spindle |
| CN112213525A (en) * | 2020-09-22 | 2021-01-12 | 陕西航空电气有限责任公司 | Motor test switching structure and test structure thereof |
| CN115498818A (en) * | 2022-09-14 | 2022-12-20 | 无锡市荣华机械制造有限公司 | Constant-torque engraving and milling electric spindle |
-
2017
- 2017-05-22 CN CN201720569324.6U patent/CN206764460U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107009193A (en) * | 2017-05-22 | 2017-08-04 | 北京精雕科技集团有限公司 | A kind of electro spindle cooled down with rotor |
| CN108687884A (en) * | 2018-04-08 | 2018-10-23 | 东莞市天精密机电有限公司 | A kind of multi output head electro spindle |
| CN108687884B (en) * | 2018-04-08 | 2023-08-18 | 东莞市天一精密机电有限公司 | Multi-output head motorized spindle |
| CN112213525A (en) * | 2020-09-22 | 2021-01-12 | 陕西航空电气有限责任公司 | Motor test switching structure and test structure thereof |
| CN112213525B (en) * | 2020-09-22 | 2024-04-09 | 陕西航空电气有限责任公司 | Motor test switching structure and test structure thereof |
| CN115498818A (en) * | 2022-09-14 | 2022-12-20 | 无锡市荣华机械制造有限公司 | Constant-torque engraving and milling electric spindle |
| CN115498818B (en) * | 2022-09-14 | 2024-02-20 | 无锡市荣华机械制造有限公司 | Constant torque engraving and milling electric spindle |
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