CN202278490U - Electric main shaft with built-in dynamic balancing system - Google Patents
Electric main shaft with built-in dynamic balancing system Download PDFInfo
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- CN202278490U CN202278490U CN2011203465426U CN201120346542U CN202278490U CN 202278490 U CN202278490 U CN 202278490U CN 2011203465426 U CN2011203465426 U CN 2011203465426U CN 201120346542 U CN201120346542 U CN 201120346542U CN 202278490 U CN202278490 U CN 202278490U
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- main shaft
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- dynamic balance
- bearing
- balance system
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- 238000001816 cooling Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 18
- 230000001050 lubricating effect Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract 1
- 230000036316 preload Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses an electric main shaft with a built-in dynamic balancing system, which comprises the following components: a main shaft, a housing, a stator-rotor part, a front cover, a back cover, a bearing set, a lubrication mechanism and a cooling mechanism. The rotor part, a front balance ring and a back balance ring are respectively equipped on the main shaft thermally. The main shaft is provided with an over-line hole along an axis. The front end of the main shaft is provided with a dynamic balancing system. The electric main shaft with the built-in dynamic balancing system has the following advantages: improving operation precision of the main shaft, greatly improving operation stability of the main shaft, and improving competitiveness of the machine tool product. Simultaneously, through reconstructing the front end and the back end of the main shaft, and respectively equipping a front small cover and a dustproof cover at the front end of the main shaft, the sealability of the main shaft is improved. Furthermore separating pads are equipped among the bearings for increasing the axial distance of the bearing set. The front end and the back end of the rotating shaft are respectively provided with the front balance ring and the back balance ring, thereby facilitating dynamic balance of the main shaft. An inner end of a back large cover is provided with an annular spring seat and an adjusting pad for exerting a preload to the front bearing set and the back bearing set, eliminating clearances of the bearings and ensuring axial stability of the main shaft in operation.
Description
Technical field:
The utility model relates to the electric main shaft of field of machining, is specifically related to a kind of built-in dynamic balance system electricity main shaft.
Background technology:
As the high-speed electric main shaft unit of various novel numerical control machining equipment critical components, mainly form by high-frequency motor and spindle unit.But series of advantages such as volume is little, the high stepless speed regulation of rotating speed that it has are widely used in various The advanced CNC.The domestic range of speeds that is applied to the practical high-speed electric main shaft of Digit Control Machine Tool mainly concentrates on 5000r/min～30000r/min at present; The maximum continuous output torque is 500Nm, has satisfied not the wilderness demand that domestic high speed number falls stock-removing machine and functional part thereof.Because rotor quality is uneven, rotor c.g. and axle center produce an eccentric throw.When main axis rotation, because the effect of out-of-balance mass centrifugal intertia force, main shaft will produce flexural deformation.Shaft distortion is big more, vibrates also serious more.Therefore,, improve the rotating speed of Digit Control Machine Tool, strengthen the Digit Control Machine Tool competitiveness of product, objectively need the electric main axle unit of higher rotating speed, bigger output torque, and then electric spindle operation stationarity has also been had higher requirement in order to substitute traditional main shaft.In addition; During the work of electricity main shaft, the rotor of motor is rotation at a high speed in stator, and the stator of motor and rotor all can produce a large amount of heat energy; The bearing of electricity main shaft runs up and also can produce a large amount of heat energy; If can not get rid of these heat energy effectively, can damage the winding wire axle sleeve and the bearing of motor, so must keep electric main shaft operating temperature constant with cooling system.
The utility model content:
The utility model proposes a kind of built-in dynamic balance system electricity main shaft to the deficiency of at present existing situation.
The technical scheme that the utility model adopted: a kind of built-in dynamic balance system electricity main shaft comprises main shaft, housing; Fixed-rotor portion, forward and backward lid, and Bearning mechanism; Lubricating structure and cooling body on the forward and backward side main shaft of rotor portion, are set with and are fixed with forward and backward gimbal.
Main shaft is provided with cable-through hole along the axle center.
Main shaft endoporus front end is equipped with dynamic balance system, the lead-in wire of dynamic balance system in the middle of the main shaft the hole pass.
The main shaft front end is outer cone and external screw thread, is used to install grinding wheel chuck and emery wheel.
The front end of main shaft is inboard through angular contact ball bearing group bearing set seat; This bearing sleeve hot charging is inboard in Qian Dagai; The bearing block inboard is provided with back stopping edge, and the front end that drive end bearing bracket is fixed in Qian Dagai forms front stopping edge, and the two ends difference roof pressure of the outer shaft of bearing group is on this forward and backward retaining edge.The internal axle sleeve one end roof pressure of bearing group is on the shaft shoulder of main shaft, and the other end is fixed through being threaded by preceding nut, adopts labyrinth seal between this preceding nut and the drive end bearing bracket.
Be provided with dottle pin between each bearing of angular contact ball bearing group, dottle pin and outer dottle pin in this dottle pin comprises are drilled with aperture on dottle pin end face and the cylindrical outside, and mist of oil gas is mapped on the raceway through these holes in spraying, in order to lubricating bearings.Height through grinding inside and outside dottle pin can make each bearing stand under load even, guarantees the rigidity and the precision of bearing.The angular contact ball bearing group of main shaft front end is that the tetrad angular contact ball bearing is formed along dress successively.
Contact-making surface between Qian Dagai and bearing block is provided with annular water chamber, and is provided with inlet opening and apopore.
Be set with inner water sleeve in the stator outside, be provided with annular water chamber between this inner water sleeve and the outer casing inner wall, be provided with axial inlet opening and apopore on the shell simultaneously, this axial inlet opening and apopore distribute and are communicated with preceding water inlet that covers greatly and delivery port.
The shell rear side is fixed with Hou Dagai, and the big cover cavity in this back is set with the rear bearing group, after cover greatly and be provided with radially fuel feed hole, oil scraper ring after being provided with between the big lid in inner water sleeve rear end and back.
Back big lid medial end is equipped with the annular elastomeric spring abutment; This spring base is provided with the aperture that is uniformly distributed with; Be used for mounting spring, rear bearing group front end is equipped with adjusting pad, and each spring roof pressure is on this annular adjusting pad end face; This spring assembly is used for applying the precompressed load to the front and back bearings group, eliminates bearing clearance.
The useful good effect of the utility model:
1, the utility model is built-in dynamic balance system electricity main shaft; Main shaft endoporus front end is equipped with dynamic balance system; Dynamic balance system can be adjusted amount of unbalance automatically, can make main shaft reduce vibrations, has improved the whole smoothness of operation of electric main shaft; Prolong the service life of main shaft, improved the machining accuracy of electric main shaft.Simultaneously, the utility model is through transforming the main shaft front and back ends, tegillum and Qian Dagai before the main shaft front end is provided with respectively, and the axial distance that dottle pin increases bearing group is set between each bearing, improved the stability of main shaft running.
2, simultaneously Qian Dagai and preceding outside be provided with annular water chamber between the water jacket and carry out cooling processing, stator arranged outside inner water sleeve is provided with radially paddle hole in the housing, rational in infrastructure, good cooling results.
3, the rear side of rear bearing block is provided with spring base and adjustment pad, is used to eliminate bearing clearance, applies the precompressed load to bearing group.
Description of drawings:
Fig. 1 is the utility model cross-sectional view.
The specific embodiment:
Referring to Fig. 1, the built-in dynamic balance system electricity of the utility model main shaft comprises main shaft 1, and housing 12 is fixed-rotor portion 10, forward and backward lid, and Bearning mechanism, lubricating structure and cooling body etc.
Wherein, on the forward and backward side main shaft of rotor portion, be set with and be fixed with forward and backward gimbal 9, this forward and backward gimbal and rotor soaking are contained on the main shaft.
The front end of main shaft 1 is installed in bearing block 6 inside through the angular contact ball bearing group; Under this bearing block heat in Qian Dagai 5 inside; Bearing block is provided with back stopping edge; The front end that drive end bearing bracket 4 is fixed in Qian Dagai 5 forms front stopping edge, and the two ends difference roof pressure of the outer shaft of angular contact ball bearing group is on this forward and backward retaining edge; The internal axle sleeve one end roof pressure of bearing group is on the shaft shoulder of main shaft; The other end is fixed through being threaded by preceding nut 3; Adopt labyrinth seal between nut and the drive end bearing bracket before being somebody's turn to do, the front end of preceding nut 3 also has a labyrinth seal structure, and double-layer seal makes the sealing of spindles better effects if.
Be provided with dottle pin between each bearing of angular contact ball bearing group; Dottle pin 8 and outer dottle pin 7 in this dottle pin comprises; Interior dottle pin roof pressure is on the internal axle sleeve of adjacent bearing, and outer dottle pin roof pressure and is drilled with aperture on dottle pin end face and the cylindrical outside on the outer shaft of adjacent bearing; Mist of oil gas is mapped on the raceway through these holes in spraying, in order to lubricating bearings.
Contact-making surface between Qian Dagai 5 and bearing block is provided with annular water chamber, and is provided with inlet opening and apopore.
Be set with inner water sleeve 11 in the stator outside; Be provided with annular water chamber between this inner water sleeve 11 and shell 12 inwalls; Be provided with axial inlet opening and apopore on the shell 12 simultaneously, this axial inlet opening and apopore distribute and are communicated with preceding 5 water inlet and the delivery port of covering greatly.
Be set with the annular elastomeric spring abutment on the main shaft of oil scraper ring 13 rear sides, be uniformly distributed with around this spring base and be provided with the aperture that is uniformly distributed with, spring is housed in each hole vertically, the rear bearing front end sleeve is equipped with adjusting pad, and each spring roof pressure is on this annular adjusting pad end face.
Claims (10)
1. a built-in dynamic balance system electricity main shaft comprises main shaft, housing; Fixed-rotor portion, forward and backward lid, and Bearning mechanism; Lubricating structure and cooling body; It is characterized in that: on the forward and backward side main shaft of rotor portion, be set with and be fixed with forward and backward gimbal, this forward and backward gimbal and rotor portion soaking install on the main shaft.
2. built-in dynamic balance system electricity main shaft according to claim 1, it is characterized in that: main shaft is provided with cable-through hole along the axle center.
3. built-in dynamic balance system electricity main shaft according to claim 1, it is characterized in that: the main shaft front end is equipped with dynamic balance system.
4. built-in dynamic balance system electricity main shaft according to claim 1; It is characterized in that: the front end of main shaft is inboard through angular contact ball bearing group bearing set seat; This bearing sleeve hot charging is inboard in Qian Dagai; The bearing block inboard is provided with back stopping edge, and the front end that drive end bearing bracket is fixed in Qian Dagai forms front stopping edge, and the two ends difference roof pressure of the outer shaft of bearing group is on this forward and backward retaining edge; The internal axle sleeve one end roof pressure of bearing group is on the shaft shoulder of main shaft, and the other end is fixed through being threaded by preceding nut.
5. built-in dynamic balance system electricity main shaft according to claim 1; It is characterized in that: be provided with dottle pin between each bearing of angular contact ball bearing group; Dottle pin and outer dottle pin in this dottle pin comprises; Be drilled with aperture on dottle pin end face and the cylindrical outside, mist of oil gas is mapped on the raceway through these holes in spraying, in order to lubricating bearings.
6. built-in dynamic balance system electricity main shaft according to claim 5, it is characterized in that: the angular contact ball bearing group of main shaft front end is that the tetrad angular contact ball bearing is formed along dress successively.
7. built-in dynamic balance system electricity main shaft according to claim 1, it is characterized in that: the contact-making surface between Qian Dagai and bearing block is provided with annular water chamber, and is provided with inlet opening and apopore.
8. built-in dynamic balance system electricity main shaft according to claim 1; It is characterized in that: be set with inner water sleeve in the stator outside; Be provided with annular water chamber between this inner water sleeve and the outer casing inner wall; Be provided with axial inlet opening and apopore on the shell simultaneously, this axial inlet opening and apopore distribute and are communicated with preceding water inlet that covers greatly and delivery port.
9. built-in dynamic balance system electricity main shaft according to claim 1; It is characterized in that: the shell rear side is fixed with Hou Dagai; The big cover cavity in this back is set with rear bearing, after cover greatly and be provided with radially fuel feed hole, oil scraper ring after being provided with between the big lid in inner water sleeve rear end and back.
10. built-in dynamic balance system electricity main shaft according to claim 9; It is characterized in that: be set with the annular elastomeric spring abutment on the main shaft of oil scraper ring rear side; Be uniformly distributed with around this spring base and be provided with the aperture that is uniformly distributed with; Be set with spring in each hole vertically, the rear bearing front end sleeve is equipped with adjusting pad, and each spring roof pressure is on this annular adjusting pad end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203465426U CN202278490U (en) | 2011-09-16 | 2011-09-16 | Electric main shaft with built-in dynamic balancing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203465426U CN202278490U (en) | 2011-09-16 | 2011-09-16 | Electric main shaft with built-in dynamic balancing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202278490U true CN202278490U (en) | 2012-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203465426U Expired - Fee Related CN202278490U (en) | 2011-09-16 | 2011-09-16 | Electric main shaft with built-in dynamic balancing system |
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| CN (1) | CN202278490U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974845A (en) * | 2012-11-29 | 2013-03-20 | 昆明理工大学 | High-speed electric main shaft device |
| CN103286331A (en) * | 2013-01-29 | 2013-09-11 | 安阳斯普机械有限公司 | Mesoporous water-through jacking electric spindle |
| CN103331696A (en) * | 2013-05-29 | 2013-10-02 | 无锡机床股份有限公司 | Electric spindle of grinding railway bearing |
| CN103991029A (en) * | 2014-05-30 | 2014-08-20 | 广州市昊志机电股份有限公司 | Grinding electric main shaft |
| CN104097100A (en) * | 2013-04-08 | 2014-10-15 | 贝特霍尔德·赫姆勒机器制造股份公司 | two-part tool spindle with liquid cooling portion |
| CN106763217A (en) * | 2017-01-10 | 2017-05-31 | 佛山市金银河智能装备股份有限公司 | A kind of non-contact type high speed shaft seal mechanism |
| CN108098541A (en) * | 2017-12-27 | 2018-06-01 | 广州群创数控机床有限公司 | A kind of single arm type grinding machine |
| CN108247535A (en) * | 2018-03-14 | 2018-07-06 | 沈阳建筑大学 | A kind of numerically control grinder electro spindle for having self-adjustable bearing pretightning force |
| CN110508834A (en) * | 2019-09-27 | 2019-11-29 | 惠州市速锋科技有限公司 | A kind of electro spindle rotor structure |
| CN111555539A (en) * | 2020-05-22 | 2020-08-18 | 深圳市速锋科技股份有限公司 | Dynamic balance rotor structure |
| CN111822734A (en) * | 2020-07-06 | 2020-10-27 | 南京航空航天大学 | an electric spindle |
| CN112338215A (en) * | 2020-11-10 | 2021-02-09 | 井冈山大学 | High-speed main shaft convenient to realize secondary dynamic balance |
| CN112720253A (en) * | 2020-12-24 | 2021-04-30 | 南通欧雷德智能科技有限公司 | High-speed mirror polishing edging frequency conversion main shaft |
| CN115441646A (en) * | 2022-11-09 | 2022-12-06 | 四川埃姆克伺服科技有限公司 | Motor and complete machine dynamic balance method thereof |
-
2011
- 2011-09-16 CN CN2011203465426U patent/CN202278490U/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974845A (en) * | 2012-11-29 | 2013-03-20 | 昆明理工大学 | High-speed electric main shaft device |
| CN103286331A (en) * | 2013-01-29 | 2013-09-11 | 安阳斯普机械有限公司 | Mesoporous water-through jacking electric spindle |
| CN104097100A (en) * | 2013-04-08 | 2014-10-15 | 贝特霍尔德·赫姆勒机器制造股份公司 | two-part tool spindle with liquid cooling portion |
| CN104097100B (en) * | 2013-04-08 | 2018-04-13 | 贝特霍尔德·赫姆勒机器制造股份公司 | A kind of tool spindle of the driver under stress of two-piece type |
| CN103331696A (en) * | 2013-05-29 | 2013-10-02 | 无锡机床股份有限公司 | Electric spindle of grinding railway bearing |
| CN103991029A (en) * | 2014-05-30 | 2014-08-20 | 广州市昊志机电股份有限公司 | Grinding electric main shaft |
| CN103991029B (en) * | 2014-05-30 | 2017-06-13 | 广州市昊志机电股份有限公司 | A kind of grinding electric main shaft |
| CN106763217A (en) * | 2017-01-10 | 2017-05-31 | 佛山市金银河智能装备股份有限公司 | A kind of non-contact type high speed shaft seal mechanism |
| CN108098541B (en) * | 2017-12-27 | 2024-03-29 | 广州群创数控机床有限公司 | Single-arm grinding machine |
| CN108098541A (en) * | 2017-12-27 | 2018-06-01 | 广州群创数控机床有限公司 | A kind of single arm type grinding machine |
| CN108247535A (en) * | 2018-03-14 | 2018-07-06 | 沈阳建筑大学 | A kind of numerically control grinder electro spindle for having self-adjustable bearing pretightning force |
| CN110508834A (en) * | 2019-09-27 | 2019-11-29 | 惠州市速锋科技有限公司 | A kind of electro spindle rotor structure |
| CN111555539B (en) * | 2020-05-22 | 2021-11-02 | 深圳市速锋科技股份有限公司 | Dynamic balance rotor structure |
| CN111555539A (en) * | 2020-05-22 | 2020-08-18 | 深圳市速锋科技股份有限公司 | Dynamic balance rotor structure |
| CN111822734A (en) * | 2020-07-06 | 2020-10-27 | 南京航空航天大学 | an electric spindle |
| CN111822734B (en) * | 2020-07-06 | 2022-07-08 | 南京航空航天大学 | an electric spindle |
| CN112338215A (en) * | 2020-11-10 | 2021-02-09 | 井冈山大学 | High-speed main shaft convenient to realize secondary dynamic balance |
| CN112338215B (en) * | 2020-11-10 | 2024-05-03 | 井冈山大学 | High-speed main shaft adjusting method convenient for realizing secondary dynamic balance |
| CN112720253A (en) * | 2020-12-24 | 2021-04-30 | 南通欧雷德智能科技有限公司 | High-speed mirror polishing edging frequency conversion main shaft |
| CN115441646A (en) * | 2022-11-09 | 2022-12-06 | 四川埃姆克伺服科技有限公司 | Motor and complete machine dynamic balance method thereof |
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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: 20120620 Termination date: 20190916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |