CN110768466A - Novel heat dissipation electric spindle - Google Patents

Novel heat dissipation electric spindle Download PDF

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Publication number
CN110768466A
CN110768466A CN201910876033.5A CN201910876033A CN110768466A CN 110768466 A CN110768466 A CN 110768466A CN 201910876033 A CN201910876033 A CN 201910876033A CN 110768466 A CN110768466 A CN 110768466A
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CN
China
Prior art keywords
ventilation
heat dissipation
end cover
shell
main shaft
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Granted
Application number
CN201910876033.5A
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Chinese (zh)
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CN110768466B (en
Inventor
何强
任路文
游志恒
董晓阳
郑博
王广飞
周新宇
亓明
张勇
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Anyang Institute of Technology
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Anyang Institute of Technology
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Priority to CN201910876033.5A priority Critical patent/CN110768466B/en
Publication of CN110768466A publication Critical patent/CN110768466A/en
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Publication of CN110768466B publication Critical patent/CN110768466B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/02—Casings or enclosures characterised by the material thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

A novel heat dissipation electric spindle comprises a spindle, a ventilation shell sleeved on the outer side of the spindle, a ventilation end cover I and a ventilation end cover II fixedly connected to two ends of the ventilation shell, wherein a bearing IV, a heat dissipation fan II, a spindle sleeve, a bearing III, a check ring II, a rotor, a check ring I, a bearing I, a gasket, a locking nut, the heat dissipation fan I and the bearing II are sequentially sleeved on the spindle in the axial direction; be equipped with the ventilation window on the ventilation end cover I, be equipped with the ventilation hole on the ventilation end cover II, the inside of ventilation shell is equipped with the ventiduct, the outer wall is equipped with the heat dissipation muscle. The electric spindle provided by the invention realizes multiple heat dissipation and effective heat dissipation by adopting the matching of the double heat dissipation fans, the ventilation windows, the ventilation channels, the ventilation holes and the heat dissipation ribs, and the ventilation shell is made of brass, so that the heat conduction and heat dissipation performance of the electric spindle are further improved.

Description

Novel heat dissipation electric spindle
Technical Field
The invention belongs to the technical field of electric spindles, and particularly relates to an electric spindle with a novel heat dissipation structure.
Background
At present, an electric spindle is more and more widely used in the field of mechanical engineering, and the problem of heat dissipation is always an object to be solved in a key way in the design of the electric spindle. When the conventional electric spindle works, the heat source of the conventional electric spindle mainly comes from the heat generated by the built-in motor and the heat generated by the spindle bearing. If the temperature of the spindle is not controlled, the thermal state characteristic and the dynamic characteristic of the built-in motor are deteriorated, the normal work of the electric spindle is influenced, and even the electric spindle is damaged.
The cooling mode of the current electric spindle is mainly water cooling or oil cooling, partial heat is taken away through forced circulation water or oil inside the electric spindle, but the water cooling and the oil cooling need to design a condensation pipeline and further need to be externally connected with a cooling liquid tank, the internal structure is complex, the production cost is high, the sealing requirement of the oil cooling on the electric spindle is high, and the oil leakage phenomenon is easy to occur.
Disclosure of Invention
In order to solve the problems, the invention provides a novel heat dissipation electric spindle which is simple in structure, obvious in cooling effect and low in production cost.
The purpose of the invention is realized by adopting the following technical scheme. The novel heat dissipation electric spindle comprises a spindle, a ventilation shell sleeved outside the spindle, a ventilation end cover I and a ventilation end cover II which are fixedly connected to two ends of the ventilation shell, a bearing IV, a main shaft sleeve, a bearing III, a check ring II, a rotor, a check ring I, a bearing I, a gasket positioned between the bearing I and a shaft shoulder, a lock nut with an end face attached to the shaft shoulder and used for limiting the main shaft in a ventilation shell and fixedly connecting the main shaft with the ventilation shell, and a bearing II are sequentially sleeved on the main shaft along the axial direction, wherein the bearing IV is fixed on a ventilation end cover II through the seal ring II; all be equipped with the vent on ventilation end cover I, the ventilation end cover II, ventilation end cover I, ventilation shell, lock nut and sealing washer I constitute one jointly and supply I rotation of heat dissipation fan and with the cavity I of vent intercommunication, ventilation end cover II, ventilation shell, main shaft cover and sealing washer II constitute one jointly and supply II rotations of heat dissipation fan and with cavity II of vent intercommunication, the inside of ventilation shell is equipped with the ventiduct that both ends communicate with cavity I, cavity II respectively.
Furthermore, the heat dissipation fan I and the heat dissipation fan II are fixedly sleeved on the main shaft through flat keys.
Furthermore, the outer wall at ventilation shell both ends is equipped with first step respectively, and ventilation end cover I, ventilation end cover II all have be used for with the fender edge of first step butt location, keep the edge with the terminal surface that is used for with ventilation shell tip rigid coupling behind the first step butt location.
Furthermore, the end face of the ventilation end cover I is provided with ventilation openings along the circumferential direction, and the blocking edge of the ventilation end cover II and the ventilation shell blocked along the cover are correspondingly provided with the ventilation openings which are communicated with each other along the circumferential direction.
Furthermore, the ventilation openings on the end face of the ventilation end cover I are fan-shaped ventilation windows, and the ventilation openings on the ventilation shell of the cover on the blocking edge and the blocked edge of the ventilation end cover II are ventilation holes.
Furthermore, a plurality of fan-shaped ventilation channels which extend along the axial direction of the main shaft are arranged in the ventilation shell along the circumferential direction.
Furthermore, the outer wall of the ventilation shell is circumferentially provided with a plurality of heat dissipation ribs extending along the axial direction of the main shaft.
Furthermore, the ventilation shell is made of brass.
Furthermore, when the main shaft rotates, the rotating speeds of the heat dissipation fan I and the heat dissipation fan II are the same and the rotating directions are consistent.
The novel heat dissipation electric spindle realizes multiple heat dissipation and effective heat dissipation by adopting the matching of the double heat dissipation fans, the ventilation windows, the ventilation channels, the ventilation holes and the heat dissipation ribs, and the ventilation shell is made of brass, so that the heat conduction and heat dissipation performance of the novel heat dissipation electric spindle is further improved. The electric spindle is simple in overall structure, convenient to machine parts, easy to assemble and low in production cost.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a front view of an embodiment of a novel heat dissipation electric spindle according to the present invention.
FIG. 2 is an isometric cross-sectional view of the embodiment shown in FIG. 1.
Fig. 3 is an axial cross-sectional view of the internal structure of the embodiment shown in fig. 1.
Fig. 4 is a half sectional view of the embodiment shown in fig. 1.
Fig. 5A, 5B, 5C are left, front and right side views, respectively, of the ventilation enclosure of the embodiment of fig. 1.
FIG. 6 is a front view of the second vented end cap of the embodiment of FIG. 1.
[ reference numerals ]
701-main shaft 702-ventilation casing 703-stator 704-retainer ring I
705-bearing I706-washer 707-locking nut 708-heat dissipation fan I
709-bearing II 710-sealing ring I711-ventilation end cover I712-rotor
713-retaining ring II 714-bearing III 715-ventilation end cover II 716-sealing ring II
717-bearing IV 718-grinding head 719-radiating fan II 720-main shaft sleeve
113-ventilation holes 114-heat dissipation ribs 115-ventilation channel 116-ventilation window
117-Cavity II 118-Cavity I
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples. For convenience of description, the present embodiment defines the position of the ventilation end cap ii as "front" and the position of the ventilation end cap i as "rear".
Referring to fig. 1 to 4, the novel heat dissipation electric spindle of the present embodiment includes a spindle 701, a ventilation housing 702 made of brass, a stator 703, four bearings, three washers, a lock nut 707, two heat dissipation fans made of 1Cr12Mo heat-resistant steel, chromium alloy or titanium alloy, two sealing rings, two ventilation end caps, and a rotor, wherein each component is manufactured by turning, forging, milling, and the like, and the surface strength hardening treatment is performed on the blades of the heat dissipation fans by processes of finishing, fine polishing, shot blasting, and the like. The specific assembly relationship of each part is as follows:
the main shaft 701 is sequentially sleeved with a ventilation end cover II 715, a bearing IV 717, a heat dissipation fan II 719, a main shaft sleeve 720, a bearing III 714, a rotor 712, a bearing I705, a locking nut 707, a heat dissipation fan I708, a bearing II 709 and a ventilation end cover I711 from front to back along the axial direction, wherein the bearing IV 717 is fixedly sealed in the ventilation end cover II 715 through a sealing ring II 716; the heat dissipation fan II 719 is installed between the sealing ring II 716 and the small-diameter end of the main shaft sleeve 720 and is fixedly sleeved on the main shaft 701 through a flat key, and the heat dissipation fan II rotates synchronously when the main shaft rotates; a retainer ring II 713 is arranged between the bearing III 714 and the rotor 712, and a retainer ring I704 is arranged between the rotor 712 and the bearing I705; a gasket 706 is arranged between the bearing I705 and a shaft shoulder at the rear end of the main shaft 701; the bearing II 709 is fixedly sealed in the ventilation end cover I711 through a sealing ring I710; the first heat dissipation fan 708 is installed between the sealing ring I710 and a step at the rear end of the main shaft and fixedly sleeved on the main shaft 701 through a flat key, and when the main shaft rotates, the second heat dissipation fan rotates synchronously.
The ventilation shell 702 is sleeved on the outer side of the main shaft 701, a stator 703 matched with the rotor is arranged on the inner wall of the ventilation shell, and the stator 703 is positioned between the retainer ring II 713 and the retainer ring I704;
the outer walls of the two ends of the ventilation end cover II are respectively provided with a first step, the inner wall of the ventilation end cover II is respectively provided with a second step, the baffle edge extending along the axial direction of the ventilation end cover II 715 is abutted against the first step at the front end of the ventilation shell 702 for positioning, then the end surface of the ventilation end cover II 715 is fixedly connected with the front end of the ventilation shell 702 by adopting a fastening piece (such as a countersunk screw), and the ventilation end cover II, the ventilation shell, the main shaft sleeve and the sealing ring II jointly form a cavity II for driving the air to flow for heat dissipation by the rotation of the heat dissipation; the locking nut 707 is T-shaped, the small diameter end of the locking nut is attached to the rear side of the shaft shoulder at the rear end of the main shaft 701 to realize positioning, and the large diameter end of the locking nut is fixedly connected to the second step at the rear end of the ventilation housing 702 through a fastener (such as a screw) to fix the main shaft in the ventilation housing; the baffle edge extending axially of the ventilation end cover I711 is abutted with the first step at the rear end of the ventilation shell 702 for positioning, then the end face of the ventilation end cover I711 is fixedly connected with the rear end of the ventilation shell 702 by a fastener (such as a countersunk screw), and the ventilation end cover I, the ventilation shell, a locking nut and a sealing ring I jointly form a cavity I for the rotation of a heat dissipation fan I so as to drive air to flow for heat dissipation;
the outer wall of the fan-shaped electric spindle is evenly provided with a plurality of heat dissipation ribs 114 extending along the axial direction along the circumferential direction, a plurality of fan-shaped air channels 115 are evenly arranged inside the fan-shaped heat dissipation ribs along the circumferential direction, two ends of each air channel 115 are respectively communicated with the cavity I118 and the cavity II 117, and the transmission of cold and hot air at two ends of the electric spindle is achieved under the driving of the two heat dissipation fans, so that the purpose of.
A plurality of fan-shaped ventilation windows 116 are arranged on the end face of the ventilation end cover I711 along the circumferential direction, each ventilation window 116 is communicated with the cavity I118, and cold air enters the cavity I118 from the ventilation windows 116 under the driving of the heat dissipation fan I708; a plurality of ventilation holes 113 which are communicated with each other are correspondingly arranged on the blocking edge extending along the axial direction of the ventilation end cover II 715 and the ventilation shell 702 covered by the blocking edge along the circumferential direction, and hot air leaves the cavity II 117 from the ventilation holes 113 under the drive of the heat dissipation fan II 719.
In other embodiments of the invention, when the ventilation window is arranged on the end face of the ventilation end cover I, the ventilation window can be also arranged on the end face of the ventilation end cover II; the ventilation end cover I can be arranged on the ventilation shell of the cover along the blocking edge, the ventilation end cover II can be arranged on the ventilation shell of the cover along the blocking edge, and the ventilation end cover I can be arranged on the ventilation shell of the cover along the blocking edge.
Of course, in other embodiments of the present invention, the ventilation end caps i and ii may be fixed to both ends of the ventilation housing by other means (such as screw connection), in which case, it may only partially cover the ventilation housing, ventilation openings may be provided only on the ventilation end caps i and ii, and the types of ventilation openings include, but are not limited to, ventilation holes, ventilation windows, ventilation rings, and the like.
The embodiment has the advantages that all parts are easy to machine, and the assembly process is simple. During assembly, a bearing II 709 is sealed in a ventilation end cover 711I by using a sealing ring II 710, a bearing IV 717 is sealed in a ventilation end cover II 715 by using a sealing ring II 716, the stator 703 is assembled in a ventilation shell 702, and a gasket 706, a bearing I705, a retaining ring I704 and a rotor 712 are sequentially assembled on the main shaft 701; then, the main shaft 701 is assembled in the ventilation shell 702 from the rear end, and the retainer ring II 713, the bearing III 714 and the main shaft sleeve 720 are sequentially assembled on the main shaft 701 from the front end; then, the heat dissipation fan II 719 is fixedly sleeved on the main shaft 701 by a flat key from the front end, and the ventilation end cover II 715 is tightly connected to the ventilation outer shell 702 by a fastener; then, the main shaft 701 is limited in the ventilation shell 702 by the locking nut 707 from the rear end, the locking nut 707 is fixedly connected with the ventilation shell 702 by a fastener, the heat dissipation fan I708 is fixedly sleeved on the main shaft 701 by a flat key, and the ventilation end cover I711 is tightly connected on the ventilation shell 702 by the fastener, so that the assembly of the embodiment is realized.
In the embodiment, when the spindle 701 is operated, the rotor 712 drives the spindle 701 to rotate, so as to drive an actuating mechanism (e.g., the grinding head 718) installed at the front end of the spindle to act, the spindle 701 drives the heat dissipation fan ii 719 located at the front end and the heat dissipation fan i 708 located at the rear end to synchronously rotate through the flat key, and in order to achieve the best heat dissipation effect, the two heat dissipation fans keep the same rotation speed and the same rotation direction. The wind direction is from the rear end of ventilation shell 702 to the front end of ventilation shell 702, and wind enters cavity I from ventilation window 116 on the terminal surface of ventilation end cover I711, and then the way enters cavity II through ventilation duct 115 inside ventilation shell 702, finally blows out from ventilation hole 113 on the edge of ventilation shell 702 and ventilation end cover II 715. The heat dissipation fan I708 collects heat generated inside the electric spindle from the rear end of the ventilation shell 702 to the front end of the ventilation shell 702 on one hand, and sucks cold air outside the electric spindle into the cavity I through the ventilation window on the other hand; the heat dissipating fan 719 blows out the heat collected in the cavity ii out of the shaft, so as to transfer and exchange the air inside the ventilation housing, and the heat dissipating ribs 114 on the ventilation housing dissipate the heat absorbed from the inside out of the ventilation housing 702, so that the heat conducting and dissipating effect of the ventilation housing 702 is particularly obvious because the ventilation housing 702 is made of brass.
The above description is only a preferred embodiment of the present invention, and any simple modification, equivalent change and modification made by those skilled in the art according to the technical essence of the present invention are within the technical scope of the present invention.

Claims (9)

1. A novel heat dissipation electric main shaft is characterized by comprising a main shaft, a ventilation shell sleeved outside the main shaft, a ventilation end cover I and a ventilation end cover II which are fixedly connected at two ends of the ventilation shell, a bearing IV, a main shaft sleeve, a bearing III, a check ring II, a rotor, a check ring I, a bearing I, a gasket positioned between the bearing I and a shaft shoulder, a lock nut with an end face attached to the shaft shoulder and used for limiting the main shaft in a ventilation shell and fixedly connecting the main shaft with the ventilation shell, and a bearing II are sequentially sleeved on the main shaft along the axial direction, wherein the bearing IV is fixed on a ventilation end cover II through the seal ring II; all be equipped with the vent on ventilation end cover I, the ventilation end cover II, ventilation end cover I, ventilation shell, lock nut and sealing washer I constitute one jointly and supply I rotation of heat dissipation fan and with the cavity I of vent intercommunication, ventilation end cover II, ventilation shell, main shaft cover and sealing washer II constitute one jointly and supply II rotations of heat dissipation fan and with cavity II of vent intercommunication, the inside of ventilation shell is equipped with the ventiduct that both ends communicate with cavity I, cavity II respectively.
2. The novel heat dissipation electric spindle according to claim 1, wherein the heat dissipation fan i and the heat dissipation fan ii are both fixed to the spindle by flat keys.
3. The novel heat dissipation electric spindle according to claim 1, wherein the outer walls at the two ends of the ventilation housing are respectively provided with a first step, and the ventilation end cap i and the ventilation end cap ii are respectively provided with a blocking edge for abutting against and positioning the first step, and an end face for fixedly connecting with the end part of the ventilation housing after the blocking edge is abutted against and positioned on the first step.
4. The novel heat dissipation electric spindle according to claim 3, wherein ventilation openings are circumferentially formed in the end face of the ventilation end cover I, and the ventilation housing of the shielding edge and the shielded edge cover of the ventilation end cover II are circumferentially and correspondingly provided with the ventilation openings which are communicated with each other.
5. The novel heat dissipation electric spindle according to claim 4, wherein the ventilation openings on the end face of the ventilation end cover I are fan-shaped ventilation windows, and the ventilation openings on the ventilation shell covered by the blocking edge and the blocked edge of the ventilation end cover II are ventilation holes.
6. The novel heat dissipation electric spindle according to claim 1, wherein a plurality of fan-shaped ventilation channels extending along the axial direction of the spindle are arranged in the ventilation housing along the circumferential direction.
7. The novel heat dissipation electric spindle according to claim 1, wherein the outer wall of the ventilation housing is circumferentially provided with a plurality of heat dissipation ribs extending in the axial direction of the spindle.
8. The novel heat dissipation electric spindle according to any one of claims 1-7, wherein the ventilation housing is made of brass.
9. The novel heat dissipation electric spindle according to any one of claims 1 to 7, wherein when the spindle rotates, the rotation speeds of the heat dissipation fan I and the heat dissipation fan II are the same and the rotation directions are consistent.
CN201910876033.5A 2019-09-17 2019-09-17 Novel heat dissipation electric spindle Active CN110768466B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910876033.5A CN110768466B (en) 2019-09-17 2019-09-17 Novel heat dissipation electric spindle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910876033.5A CN110768466B (en) 2019-09-17 2019-09-17 Novel heat dissipation electric spindle

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CN110768466A true CN110768466A (en) 2020-02-07
CN110768466B CN110768466B (en) 2021-11-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114390879A (en) * 2022-03-22 2022-04-22 西安中科西光航天科技有限公司 Ground feature monitoring devices based on multisource remote sensing data fusion

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202317042U (en) * 2011-11-11 2012-07-11 玉环图远机电有限公司 Electric spindle for turning
CN105144551A (en) * 2013-04-26 2015-12-09 株式会社丰田自动织机 Induction machine
CN107612217A (en) * 2016-07-11 2018-01-19 天津辰宝机电科技有限公司 A kind of energy-efficient AC/DC motor
CN108199533A (en) * 2017-12-21 2018-06-22 云南靖创液态金属热控技术研发有限公司 A kind of electro spindle liquid metal temperature control system
CN108931338A (en) * 2017-05-23 2018-12-04 鼎奇(天津)主轴科技有限公司 A kind of installation method of electro spindle
CN208489718U (en) * 2018-06-06 2019-02-12 上海光陆电机有限公司 A kind of high efficiency and heat radiation blower motor
CN208539675U (en) * 2018-07-19 2019-02-22 常州宝龙电机有限公司 Automotive pump magneto

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202317042U (en) * 2011-11-11 2012-07-11 玉环图远机电有限公司 Electric spindle for turning
CN105144551A (en) * 2013-04-26 2015-12-09 株式会社丰田自动织机 Induction machine
CN107612217A (en) * 2016-07-11 2018-01-19 天津辰宝机电科技有限公司 A kind of energy-efficient AC/DC motor
CN108931338A (en) * 2017-05-23 2018-12-04 鼎奇(天津)主轴科技有限公司 A kind of installation method of electro spindle
CN108199533A (en) * 2017-12-21 2018-06-22 云南靖创液态金属热控技术研发有限公司 A kind of electro spindle liquid metal temperature control system
CN208489718U (en) * 2018-06-06 2019-02-12 上海光陆电机有限公司 A kind of high efficiency and heat radiation blower motor
CN208539675U (en) * 2018-07-19 2019-02-22 常州宝龙电机有限公司 Automotive pump magneto

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114390879A (en) * 2022-03-22 2022-04-22 西安中科西光航天科技有限公司 Ground feature monitoring devices based on multisource remote sensing data fusion

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