CN201323493Y - Spiral groove cooling channel structure in electric main shaft - Google Patents
Spiral groove cooling channel structure in electric main shaft Download PDFInfo
- Publication number
- CN201323493Y CN201323493Y CNU2008202040728U CN200820204072U CN201323493Y CN 201323493 Y CN201323493 Y CN 201323493Y CN U2008202040728 U CNU2008202040728 U CN U2008202040728U CN 200820204072 U CN200820204072 U CN 200820204072U CN 201323493 Y CN201323493 Y CN 201323493Y
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- stator
- main shaft
- electric main
- spiral groove
- heat conduction
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Abstract
The utility model discloses a spiral groove cooling channel structure in an electric main shaft. The electric main shaft comprises a rotor (11), a stator (10), a stator thin wall sealed heat conducting jacket (9) and a hollow housing (8); wherein the rotor (11) is positioned at the center of the electric main shaft, and the stator (10) surrounds the rotor (11) and forms a gap with the rotor (11), and the stator thin wall sealed heat conducting jacket (9) is contained in the outer surface of the stator (10); wherein, the inner spherical surface of the hollow housing (8) is provided with the internal thread with a unifilar helix or double helix structure, and the internal thread of the hollow housing (8) is combined with the stator thin wall sealed heat conducting jacket (9) to form a spiral groove, and the spiral groove has a cooling medium inlet and an outlet, and the heat conducting medium (21) is filled between the inner spherical surface of the stator thin wall sealed heat conducting jacket (9) and the outer spherical surface of the stator (10). The utility model has a compact and reasonable structure and has high cooling efficiency.
Description
Technical field
The utility model relates to mechanical engineering field, specifically is a kind of electric main shaft inner spiral groove cooling duct structure.This mechanism adopts coolant to overlap the passage that constitutes by the hollow overcoat and the stator thin-walled sealing heat conduction that have helical structure, realizes high efficiency and heat radiation.
Background technology
The electricity spindle technology is integrated in motor in the main axle unit, realizes high speed rotating.The electricity main shaft is when work, because the bearing that the high velocity air of the current vortex of stator, inside and bearing can produce a large amount of heats and high speed rotating can produce a large amount of heats, if can not in time dispel the heat, not only can produce rapid temperature rise and thermal deformation, influence maximum speed, operating accuracy and reliability that electric main shaft can reach, also can cause the damage of bearing, therefore need in the course of processing, cool off electric main shaft.Existing methods for cooling mostly adopts water pump that cooling water pump is become owner of in the circulation waterway of shaft housing, thereby heat is taken away, and the main shaft temperature of keeping the course of processing is stable.Prior art normally directly processes the spiral tank on the outer wall of the stator casing of fixed stator, being connected of stator casing and other part simultaneously is at stator casing relevant position thread mill drilling.There is following shortcoming in this technology: (1) stator casing is thicker, and the conductive coefficient of stator casing steel is lower, can not be fully the heat of electric main shaft inside is conducted out; (2) there is the gap in electric main shaft stator with cooperating of stator casing, because the conductive coefficient of air is low, has hindered electric main shaft internal heat and has outwards conducted.
The utility model content
The purpose of this utility model is to overcome the problem that prior art exists, and a kind of electric main shaft inner spiral groove cooling duct structure is provided, and realizes distributing fast of heat in the electric spindle operation process.The utility model is achieved through the following technical solutions:
Described electric main shaft comprises a rotor 11, stator 10,9, hollow overcoats 8 of stator thin-walled sealing heat conduction cover, its rotor 11 is positioned at the electric alignment of shafts, stator 10 surrounding rotors 11 also have certain interval with rotor 11, stator thin-walled sealing heat conduction cover 9 is contained within stator 10 outer surfaces, and hollow overcoat 8 is used for fixing bearing and seal stator heat conduction cover 9.Process single-screw or double-stranded internal thread on the internal circular surfaces of described hollow overcoat 8, be filled with heat transfer medium between the internal circular surfaces of stator thin-walled sealing heat conduction cover 9 and the stator outer round surface, the internal thread of described hollow overcoat 8 and seal stator heat conduction cover are combined into helicla flute, helicla flute has entrance and exit, cooling water, gas or other media can flow through this helicla flute through inlet, the heat that bearing and stator coil produce when electric main shaft high speed rotating is taken away in outlet.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, the stator thin-walled sealing heat conduction cover 9 of described electric main shaft is for adopting copper, copper alloy, aluminum or aluminum alloy, diamond like material, magnesium, magnesium oxide or magnesium alloy materials, aluminium nitride, thermoplasticity heat-conducting resin and thermosetting heat-conducting resin, the thin-wall circular tube material that metal filled type, metal oxide filled-type, metal nitride filled-type, inorganic non-metallic filled-type, fiber HEAT-CONDUCTING PLASTICS FILLED WTTH PARTICLES material are made is fixed as one by welding or bonding method and described stator 10.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, the outer round surface and described hollow overcoat 8 internal circular surfaces of described stator thin-walled sealing heat conduction cover 9 adopt interference fit to be fixed as one.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, described helicla flute cross section is semicircle, circular arc, rectangle, triangle or trapezoidal.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, the outer round surface of described stator thin-walled sealing heat conduction cover 9 is processed into the shape of threads rough external surface, these rough external surface screw thread characteristics are consistent on structure, direction, pitch, the width of thread with internal thread, to increase heat transfer surface area.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, the outer round surface and the coolant contact portion of described stator thin-walled sealing heat conduction cover 9 are rough external surface.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, the inlet of described coolant and outlet all are set in the rear end or the front end of electric main shaft, and described internal thread is a double-spiral structure.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, the inlet of described coolant and outlet are set in the two ends of electric main shaft respectively, and described internal thread is a single coil configuration.
In the above-mentioned electric main shaft inner spiral groove cooling duct structure, adopt sealing ring 20 sealings between the two ends of described stator thin-walled sealing heat conduction cover 9 and the hollow overcoat.
Novel electric main shaft inner spiral groove of the present utility model cooling duct structure is by stator thin-walled sealing heat conduction cover, hollow overcoat, water inlet, delivery port composition.Stator thin-walled sealing heat conduction cover is a thin cylinder, closely fixes with stator outer wall employing welding that fixes or bonding method; Stator thin-walled sealing heat conduction cover stretches out the two ends certain-length of stator casing, is used for locating stator core and spiral fluted position.The heat that stator coil produces is taken away rapidly through the stator thin-walled sealing heat conduction cover medium that is cooled, and stator thin-walled sealing heat conduction cover is selected the high material of heat transfer efficiency for use.
Hollow overcoat inner surface in the utility model processes helicla flute, according to the import and export position of coolant, can select single helical groove form (inlet is positioned at the different ends of helicla flute with outlet) or double spiral groove form (inlet all is positioned at end with outlet) for use.The front and back position of hollow overcoat can process the respective threads hole, the parts such as front and rear cover that the location is connected with main shaft.
Stator thin-walled sealing heat conduction cover and hollow overcoat adopt the type of attachment of interference fit.Hollow outer helicla flute that puts and stator thin-walled sealing heat conduction cover have formed the coolant circulation circuit, and the sealing ring sealing is adopted at two ends, effectively avoids the leakage of coolant.
The utility model compared with prior art has following advantage:
1. stator thin-walled sealing heat conduction cover thin thickness dispels the heat fast.
2. fill the medium of high thermal conductivity between stator thin-walled sealing heat conduction cover and the stator, eliminate fit clearance, improve heat conductivility.
3. stator thin-walled sealing surfaces obtains to have the rough surface of certain lines after certain processes, has increased and the coolant contact area, is beneficial to quick conduction heat.
4. the reasonable integral structure compactness reduces fit clearance, improves radiating efficiency.
Description of drawings
Fig. 1 is an electric main shaft inside spin tank of the present utility model cooling duct structural representation, among the figure, and the 1-armature spindle; 2-front end bearing inner race locking nut; 3-front end bearing outer ring shoulder block; 4-ripple pad; End bearing before the 5-; The 6-front end housing; 7-fore bearing outer collar; The hollow overcoat of 8-; 9-stator thin-walled sealing heat conduction cover; The 10-stator; The 11-rotor; 12-rear end bearing outer ring lock sleeve; 13-level pressure spring; The 14-rear end bearing is adjusted binding ring; The 15-check ring; The 16-rear end bearing; 17-rear end bearing inner ring locking nut; The 18-backboard; The 19-rear end cap; The 20-sealing ring; The medium of 21-high thermal conductivity.
Fig. 2 is electric spindle rotor axle schematic diagram, among the figure, and the 1-armature spindle; The 11-rotor.
Fig. 3 is that electric main shaft heat transmits schematic diagram, and wherein arrow represents that heat transmits route.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further.
Electric main shaft coolant of the present utility model loop is by stator thin-walled sealing heat conduction cover 9, hollow overcoat 8, coolant inlet, coolant outlet composition.Stator thin-walled sealing heat conduction cover 9 is a thin cylinder, adopts welding or bonding method closely fixing with stator 10 outer walls.
At first the stator casing made from thin common cylinder and trip adopts welding or bonding method that both are fixed as one.Stator thin-walled sealing heat conduction cover 9 adopts interference fit to be connected with hollow overcoat 8, controls the tolerance of cooperation well.
The helicla flute in coolant loop can be selected single-screw or double helix for use according to the import and export position of coolant, owing on endoporus, therefore need bore hole processing, guarantees the circularity of processing.And process the location and installation screwed hole that connects front end housing 6, backboard 18 and rear end cap 19.
During installation, with hollow overcoat 8 whole heating, be heated to uniform temperature, hollow overcoat 8 expanded by heating, the stator 10 and the stator thin-walled sealing heat conduction cover 9 of packing into rapidly this moment and being fixed as one, one end of its stator thin-walled sealing heat conduction cover 9 props up the end face of hollow overcoat 8, and the realization stator shaft orientation is accurately located.After hollow overcoat 8 coolings, evenly shrink, stator 10 and stator thin-walled sealing heat conduction thereof can be overlapped 9 secure fixation; Meanwhile, the coolant helicla flute on the hollow overcoat 8 is kept apart by stator thin-walled sealing heat conduction cover 9, has formed the coolant circulation circuit, and sealing ring 20 sealings are adopted at two ends, avoid the leakage of coolant.
Earlier front end housing 6 is loaded on the hollow overcoat 8, preceding end bearing 5, rear end bearing 16 are loaded on the armature spindle 1, utilize armature spindle 1 shaft shoulder location.Fore bearing overcoat 7 circles are loaded on the front end housing 6, realize the locking of preceding end bearing 16 outer rings, and front end bearing outer ring shoulder block 3 realizes that with ripple pad 4 front end inner ring locking nut 2 is loaded on the armature spindle 1 to preceding end bearing 5 outer ring pretensions, end bearing 5 inner rings locking before realizing.Rear end bearing outer ring lock sleeve 12, level pressure spring 13, check ring 15 form the rear end bearing pre-pressing structure, and rear end bearing 16 outer rings are applied adjustable level pressure pretightning force.And with the locking of 17 pairs of rear end bearing 16 inner rings of rear end bearing inner ring locking nut.
During use, import coolant,, derive from the cooling circuit outlet again, cool off thereby realize circulating by the helicla flute and the motor stator 10 generation heat exchanges of hollow overcoat 8 from the cooling circuit inlet.
Claims (9)
1, a kind of electric main shaft inner spiral groove cooling duct structure, described electric main shaft comprises a rotor (11), a stator (10), a stator thin-walled sealing heat conduction cover (9), a hollow overcoat (8), its rotor (11) is positioned at the electric alignment of shafts, stator (10) surrounding rotor (11) also has certain interval with rotor (11), stator thin-walled sealing heat conduction cover (9) is contained within stator (10) outer surface, it is characterized in that: process single-screw or double-stranded internal thread on the internal circular surfaces of described hollow overcoat (8), the internal thread of described hollow overcoat (8) and stator thin-walled sealing heat conduction cover (9) are combined into helicla flute, helicla flute has the coolant entrance and exit, is filled with heat transfer medium (21) between the internal circular surfaces of stator thin-walled sealing heat conduction cover (9) and stator (10) outer round surface.
2, electric main shaft inner spiral groove according to claim 1 cooling duct structure, the stator thin-walled sealing heat conduction cover (9) that it is characterized in that described electric main shaft is the thin-wall circular tube that adopts copper, copper alloy, aluminum or aluminum alloy, diamond like material, magnesium, magnesium oxide or magnesium alloy materials, aluminium nitride, thermoplasticity heat-conducting resin or thermosetting heat-conducting resin to make, and is fixed as one by welding or bonding method and described stator (10).
3, electric main shaft inner spiral groove according to claim 2 cooling duct structure is characterized in that the outer round surface of described stator thin-walled sealing heat conduction cover (9) and described hollow overcoat (8) internal circular surfaces employing interference fit are fixed as one.
4, electric main shaft inner spiral groove according to claim 1 cooling duct structure is characterized in that described spiral fluted cross section is semicircle, circular arc, rectangle, triangle or trapezoidal.
5, electric main shaft inner spiral groove according to claim 4 cooling duct structure, the outer round surface that it is characterized in that described stator thin-walled sealing heat conduction cover (9) is processed into the shape of threads rough external surface, and these rough external surface screw thread characteristics and described female thread structure, direction, pitch, the width of thread are consistent.
6, electric main shaft inner spiral groove according to claim 5 cooling duct structure is characterized in that the outer round surface and the coolant contact portion of stator thin-walled sealing heat conduction cover (9) is rough external surface.
7, electric main shaft inner spiral groove according to claim 6 cooling duct structure, the inlet that it is characterized in that described coolant and outlet all are set in the rear end or the front end of electric main shaft, and described internal thread is a double-spiral structure.
8, electric main shaft inner spiral groove according to claim 6 cooling duct structure, the inlet that it is characterized in that described coolant and outlet are set in the two ends of electric main shaft respectively, and described internal thread is a single coil configuration.
9,, adopt sealing ring to seal between the two ends that it is characterized in that described stator thin-walled sealing heat conduction cover (9) and the hollow overcoat (8) according to each described electric main shaft inner spiral groove cooling duct structure of claim 1～8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202040728U CN201323493Y (en) | 2008-11-27 | 2008-11-27 | Spiral groove cooling channel structure in electric main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202040728U CN201323493Y (en) | 2008-11-27 | 2008-11-27 | Spiral groove cooling channel structure in electric main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201323493Y true CN201323493Y (en) | 2009-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202040728U Expired - Fee Related CN201323493Y (en) | 2008-11-27 | 2008-11-27 | Spiral groove cooling channel structure in electric main shaft |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950297A (en) * | 2012-12-06 | 2013-03-06 | 无锡博华机电有限公司 | Cooling and circulating passage of electric main shaft |
| US20140292110A1 (en) * | 2013-03-26 | 2014-10-02 | Sanyo Denki Co., Ltd. | Linear motor |
| CN106849468A (en) * | 2017-03-01 | 2017-06-13 | 宁波腾隆户外用品有限公司 | The cold servo motor of liquid and its manufacturing process |
| CN108958309A (en) * | 2018-05-31 | 2018-12-07 | 中国科学院国家空间科学中心 | A kind of wide-range is lower warm black matrix |
| CN109317700A (en) * | 2018-11-12 | 2019-02-12 | 靖江斯贝得电机制造有限公司 | A kind of low-heat extension high precision electro main shaft |
| CN110254264A (en) * | 2019-07-04 | 2019-09-20 | 昆山惠禾新能源科技有限公司 | Liquid cooling terminal and charging gun |
| CN109599979B (en) * | 2017-10-02 | 2021-02-09 | 东芝三菱电机产业系统株式会社 | Totally-enclosed rotating electrical machine and cooler |
-
2008
- 2008-11-27 CN CNU2008202040728U patent/CN201323493Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950297A (en) * | 2012-12-06 | 2013-03-06 | 无锡博华机电有限公司 | Cooling and circulating passage of electric main shaft |
| US20140292110A1 (en) * | 2013-03-26 | 2014-10-02 | Sanyo Denki Co., Ltd. | Linear motor |
| CN106849468A (en) * | 2017-03-01 | 2017-06-13 | 宁波腾隆户外用品有限公司 | The cold servo motor of liquid and its manufacturing process |
| CN106849468B (en) * | 2017-03-01 | 2024-03-29 | 宁波沃伏龙机电有限公司 | Liquid cooling servo motor and manufacturing process thereof |
| CN109599979B (en) * | 2017-10-02 | 2021-02-09 | 东芝三菱电机产业系统株式会社 | Totally-enclosed rotating electrical machine and cooler |
| CN108958309A (en) * | 2018-05-31 | 2018-12-07 | 中国科学院国家空间科学中心 | A kind of wide-range is lower warm black matrix |
| CN109317700A (en) * | 2018-11-12 | 2019-02-12 | 靖江斯贝得电机制造有限公司 | A kind of low-heat extension high precision electro main shaft |
| CN110254264A (en) * | 2019-07-04 | 2019-09-20 | 昆山惠禾新能源科技有限公司 | Liquid cooling terminal and charging gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091007 Termination date: 20131127 |