TWI829168B - NdFeB permanent magnetic bearing - Google Patents
NdFeB permanent magnetic bearing Download PDFInfo
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- TWI829168B TWI829168B TW111119069A TW111119069A TWI829168B TW I829168 B TWI829168 B TW I829168B TW 111119069 A TW111119069 A TW 111119069A TW 111119069 A TW111119069 A TW 111119069A TW I829168 B TWI829168 B TW I829168B
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- outer ring
- sleeve
- inner ring
- magnet
- collet
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- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000005415 magnetization Effects 0.000 claims abstract description 6
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000005339 levitation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 230000001846 repelling effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
一種釹鐵硼永久磁浮軸承，其外環部係由一外環套、一外環磁鐵、及一外環固定件所構成；其旋轉部係置於外環部內緣，且由一心軸套、一內環磁鐵、及一內環固定件所構成；其中，外環磁鐵與內環磁鐵係採用釹鐵硼磁鐵燒結成形，並以可編程之充磁方式編輯其磁路，由於外環磁鐵與內環磁鐵相鄰，且其斜面因具有相同磁極而產生相斥的磁力，使旋轉部懸浮於外環部內，並據以形成一磁浮軸承組件；藉此，將外環套鎖固於軸承座，並將一心軸筒夾連結一旋轉軸，穿入心軸套內再予以鎖合，使心軸筒夾定位在旋轉部內，則旋轉軸將懸浮在軸承座上並得以高速旋轉。 A NdFeB permanent magnetic bearing, the outer ring part of which is composed of an outer ring sleeve, an outer ring magnet, and an outer ring fixing part; the rotating part is placed on the inner edge of the outer ring part, and consists of a mandrel sleeve, It consists of an inner ring magnet and an inner ring fixing piece; among them, the outer ring magnet and the inner ring magnet are sintered and formed by neodymium iron boron magnets, and their magnetic circuits are edited in a programmable magnetization method. Since the outer ring magnet and the inner ring magnet are sintered, The inner ring magnets are adjacent, and their inclined surfaces generate repulsive magnetic forces because they have the same magnetic poles, causing the rotating part to float in the outer ring part, thereby forming a magnetic bearing assembly; thereby, the outer ring sleeve is locked to the bearing seat , connect a mandrel collet to a rotating shaft, penetrate the mandrel sleeve and then lock it, so that the mandrel collet is positioned in the rotating part, then the rotating shaft will be suspended on the bearing seat and rotate at high speed.
Description
本發明係有關一種磁浮軸承，尤指其外環磁鐵與內環磁鐵係採用釹鐵硼磁鐵燒結成形，並以可編程方式進行充磁，則磁鐵之間產生相斥磁力，並據以使旋轉軸保持懸浮無接觸狀態運轉之一種釹鐵硼永久磁浮軸承。 The invention relates to a magnetic bearing, in particular, the outer ring magnet and the inner ring magnet are sintered and formed by neodymium iron boron magnets, and are magnetized in a programmable manner, so that mutual repulsive magnetic force is generated between the magnets, and the rotation is caused by this. It is a kind of NdFeB permanent magnetic bearing that keeps the shaft suspended and running in a non-contact state.
按，傳統的滾珠軸承其應用範圍相當地廣泛，惟在運轉中因鋼珠的滾動接觸產生摩擦，造成軸承發熱現象，此現象將使軸承本身的潤滑失效，以致減短軸承的使用壽命。由於產業界追求高速運轉的需求日增，接觸式的滾珠軸承已難以承擔其負荷，故而非接觸式的軸承乃因應而生；其中，磁浮軸承是應用磁力使旋轉軸懸浮，由於旋轉軸不再與軸承座接觸，因此磁浮軸承可解決傳統滾珠軸承其接觸摩擦與潤滑失效的問題。 Traditional ball bearings have a wide range of applications. However, during operation, friction occurs due to the rolling contact of the steel balls, causing the bearing to heat up. This phenomenon will invalidate the lubrication of the bearing itself and shorten the service life of the bearing. Due to the increasing demand for high-speed operation in the industry, contact ball bearings can no longer bear the load, so non-contact bearings have emerged accordingly. Among them, magnetic bearings use magnetic force to levitate the rotating shaft. Since the rotating shaft no longer In contact with the bearing seat, magnetic bearings can solve the problems of contact friction and lubrication failure of traditional ball bearings.
次按，「電磁式磁浮軸承」是利用電力驅動線圈產生磁力而使旋轉軸懸浮；雖然磁浮軸承不會有摩擦噪音與轉軸潤滑失效的困擾，但線圈仍會發熱，以及電力一旦中斷磁浮即會失效。因此電磁式磁浮軸承需要冷卻系統以降低電磁線圈的熱量，同時為防止電力中斷，轉軸外仍需備用一滾珠軸承，方能避免轉軸損壞；因此，電磁式磁浮軸承無法做到全懸浮狀態，同時備用滾珠軸承的摩擦噪音與熱源仍然存在。 Secondly, "electromagnetic magnetic bearings" use electricity to drive coils to generate magnetic force to levitate the rotating shaft. Although magnetic bearings will not have the problems of friction noise and shaft lubrication failure, the coils will still generate heat, and once the power is interrupted, the magnetic levitation will Invalid. Therefore, electromagnetic magnetic bearings require a cooling system to reduce the heat of the electromagnetic coil. At the same time, in order to prevent power interruption, a backup ball bearing is still required outside the rotating shaft to avoid damage to the rotating shaft. Therefore, electromagnetic magnetic bearings cannot achieve a fully suspended state. At the same time, The friction noise and heat source from the stock ball bearing is still present.
再按，先前技術中公開的永久磁鐵式磁浮軸承，雖然無須以電力控制線圈以產生磁力，也沒有電力中斷造成旋轉軸損壞的顧慮。惟查，在公開揭露的「永久磁鐵式磁浮軸承」技術中，雖然企圖以無接觸、無磨耗、無噪音、不發熱、更不須備用滾珠軸承的保護，來取代傳統的「電磁式磁浮軸承」。然因在商品化實施過程時，仍遭遇諸多困難，易造成磁力分布不均勻、不易組裝 且定位精度不足等缺失，因而降低運轉效能，以致於尚無法廣泛運用於產業，因此仍有改善空間。 Furthermore, although the permanent magnet type magnetic bearing disclosed in the prior art does not need to use electricity to control the coil to generate magnetic force, there is no concern about damage to the rotating shaft caused by power interruption. However, in the publicly disclosed "permanent magnet magnetic bearing" technology, although it attempts to replace the traditional "electromagnetic magnetic bearing" with a non-contact, no wear, no noise, no heat, and no need for backup ball bearing protection, ”. However, many difficulties are still encountered during the commercialization implementation process, which can easily lead to uneven magnetic distribution and difficulty in assembly. Moreover, deficiencies such as insufficient positioning accuracy reduce operating efficiency, making it unable to be widely used in industry, so there is still room for improvement.
因此如何應用永久磁鐵以開發出可高速運轉且方便組裝與應用的磁浮軸承，便成為本發明人積極思考所欲突破的課題。 Therefore, how to use permanent magnets to develop magnetic bearings that can operate at high speeds and are easy to assemble and apply has become a topic that the inventor is actively thinking about and wants to break through.
緣是，本發明之主要目的，係在提供以釹鐵硼磁鐵燒結成形，並以可編程之方式進行充磁，使外環部與旋轉部的磁鐵產生相斥磁力，據以使旋轉軸保持懸浮無接觸狀態運轉之一種釹鐵硼永久磁浮軸承，達到可高速運轉且方便組裝與應用之功效增進。 Therefore, the main purpose of the present invention is to provide a NdFeB magnet that is sintered and magnetized in a programmable manner so that the magnets in the outer ring part and the rotating part generate repulsive magnetic forces, thereby maintaining the rotating shaft. It is a NdFeB permanent magnetic bearing that operates in a suspended and non-contact state, achieving high-speed operation and convenient assembly and application.
本發明之次要目的，係在提供可調整磁鐵之斜面角度，以因應不同轉軸承載重量需求之一種釹鐵硼永久磁浮軸承。 The secondary purpose of the present invention is to provide a NdFeB permanent magnetic bearing that can adjust the inclination angle of the magnet to meet the load-carrying requirements of different rotating shafts.
為達上述目的，本發明之釹鐵硼永久磁浮軸承，係供鎖固於一軸承座以使一旋轉軸懸浮其中而轉動者，包括：一外環部，係由一外環套、一外環磁鐵、及一外環固定件所構成；其中，該外環套供以鎖固於該軸承座，其具有一容置空間；該外環磁鐵係嵌設於該容置空間，其具有一內側外環磁鐵與一外側外環磁鐵，且其內緣設有相互對稱之外環斜面；該外環固定件設有螺牙，係鎖合在該外環套之側端以使該外環磁鐵固設於該外環套內；一旋轉部，係由一心軸套、一內環磁鐵、及一內環固定件所構成；其中，該心軸套的內緣設有一錐面；該內環磁鐵係套設於該心軸套之外緣，其具有一內側內環磁鐵與一外側內環磁鐵，且其外緣設有相互對稱之內環斜面；該內環固定件設有螺牙，係鎖合在該心軸套之側端以使該內環磁鐵固設於該心軸套上；該旋轉部係置於該外環部內緣，令該內環斜面與該外環斜面具有相同的磁極，則該兩斜面之間將產生均勻分布且彼此相斥的磁力，並據以使該內環斜面與該外環斜面之間的間隙維持一固定值；再令該外環固定件係鎖合在該內環固定件之側端以使該旋轉部 浮動樞設於該外環部內，並據以形成一磁浮軸承組件。 In order to achieve the above purpose, the NdFeB permanent magnetic bearing of the present invention is locked in a bearing seat so that a rotating shaft is suspended and rotated. It includes: an outer ring part, which is sleeved by an outer ring and an outer ring. It is composed of a ring magnet and an outer ring fixing piece; wherein, the outer ring sleeve is used to be locked in the bearing seat and has an accommodating space; the outer ring magnet is embedded in the accommodating space and has an accommodating space. The inner outer ring magnet and an outer outer ring magnet are provided with mutually symmetrical outer ring slopes on their inner edges; the outer ring fixing member is provided with screw teeth and is locked at the side end of the outer ring sleeve so that the outer ring The magnet is fixed in the outer ring sleeve; a rotating part is composed of a mandrel sleeve, an inner ring magnet, and an inner ring fixing member; wherein, the inner edge of the mandrel sleeve is provided with a tapered surface; The ring magnet is sleeved on the outer edge of the mandrel sleeve and has an inner inner ring magnet and an outer inner ring magnet, and its outer edge is provided with mutually symmetrical inner ring slopes; the inner ring fixing member is provided with screw threads , is locked at the side end of the mandrel sleeve so that the inner ring magnet is fixed on the mandrel sleeve; the rotating part is placed on the inner edge of the outer ring part, so that the inner ring slope and the outer ring slope have a If they have the same magnetic poles, a uniformly distributed and mutually repelling magnetic force will be generated between the two inclined surfaces, and accordingly the gap between the inner ring inclined surface and the outer ring inclined surface will be maintained at a fixed value; and then the outer ring fixing member is locked on the side end of the inner ring fixing member so that the rotating part The floating pivot is disposed in the outer ring portion to form a magnetic bearing assembly.
承上，一心軸筒夾，具有一軸孔及一筒夾，且該筒夾外緣設有一與該心軸套相對應之錐面；以及將該磁浮軸承組件之外環套鎖固於該軸承座，再將該心軸筒夾穿入該磁浮軸承組件之心軸套內緣，並使該旋轉軸嵌入該心軸筒夾的軸孔內，鎖合該心軸筒夾與該心軸套，使該心軸筒夾定位在該旋轉部內，則該旋轉軸將懸浮在該軸承座上並得以高速旋轉。 Following the above, a mandrel collet has a shaft hole and a collet, and the outer edge of the collet is provided with a tapered surface corresponding to the mandrel sleeve; and the outer ring sleeve of the magnetic bearing assembly is locked to the bearing seat, and then insert the spindle collet into the inner edge of the spindle sleeve of the magnetic bearing assembly, and insert the rotating shaft into the shaft hole of the spindle collet, and lock the spindle collet and the spindle sleeve , positioning the mandrel collet in the rotating part, the rotating shaft will be suspended on the bearing seat and rotate at high speed.
依據前揭特徵，本發明中該外環磁鐵與該內環磁鐵係採用釹鐵硼永久磁鐵材質經一體壓製燒結成形，再經過精密研磨加工以確保定位精度，並根據磁浮須求採用可編程之充磁方式編輯磁路，以增强其磁力，及使磁力分布均勻穩定，並可進一步控制其相斥磁力的間距。 According to the previously disclosed characteristics, the outer ring magnet and the inner ring magnet in the present invention are made of NdFeB permanent magnet material and are integrally pressed and sintered. They are then precision ground and processed to ensure positioning accuracy, and are programmable according to the magnetic levitation requirements. The magnetization method edits the magnetic circuit to enhance its magnetic force, make the magnetic force distribution uniform and stable, and further control the spacing of its repulsive magnetic force.
依據前揭特徵，本發明中該內環斜面與該外環斜面之間的間隙值，可依據該旋轉軸其運轉平順度的需求在0.3mm~1.0mm之間進行調整。 According to the disclosed characteristics, the gap value between the inner ring slope and the outer ring slope in the present invention can be adjusted between 0.3 mm and 1.0 mm according to the running smoothness requirements of the rotating shaft.
依據前揭特徵，本發明中該內環斜面與該外環斜面之角度值，可依據該旋轉軸其承載重量的需求在15°~45°之間進行調整，而較佳的角度值則為25°±5°。 According to the front-revealing feature, the angle value of the inner ring slope and the outer ring slope in the present invention can be adjusted between 15° and 45° according to the load-bearing requirements of the rotation axis, and the preferred angle value is 25°±5°.
依據前揭特徵，本發明中更包括二防塵隔片，其係組設於該外環部與該旋轉部之左右兩側接觸面，以阻絕灰塵進入該磁浮軸承組件內。 According to the front-opening feature, the present invention further includes two dust-proof spacers, which are arranged on the left and right contact surfaces of the outer ring part and the rotating part to prevent dust from entering the magnetic bearing assembly.
依據前揭特徵，本發明中該心軸筒夾更包括具有一法蘭，該法蘭設有複數個與該心軸套的凸緣面相對應的一螺絲孔，可藉由一螺絲予以鎖定。 According to the aforementioned features, the spindle collet in the present invention further includes a flange, and the flange is provided with a plurality of screw holes corresponding to the flange surface of the spindle sleeve, which can be locked by a screw.
藉助前揭特徵，本發明「釹鐵硼永久磁浮軸承」具有之效益為： With the help of the aforementioned features, the "NdFeB permanent magnetic bearing" of the present invention has the following benefits:
(1)本發明中其外環磁鐵與內環磁鐵係採用釹鐵硼磁鐵材質一體壓製燒結成形，再經過精密研磨加工以確保定位精度，並根據磁浮須求採用可編程之充磁方式編輯磁路，故而可增強吸力與斥力，且磁力分布可達均勻穩定，並可進一 步控制其相斥磁力的間距。 (1) In the present invention, the outer ring magnet and the inner ring magnet are made of neodymium iron boron magnet material and are integrally pressed and sintered. They are then precision ground and processed to ensure positioning accuracy, and a programmable magnetization method is used to edit the magnet according to the magnetic levitation requirements. path, so the attraction and repulsion can be enhanced, and the magnetic force distribution can be even and stable, and can further Step by step to control the spacing of their repulsive magnetic forces.
(2)本發明採用可調整磁鐵之斜面角度的設計，以因應不同轉軸承載重量的需求，將可擴大釹鐵硼永久磁浮軸承的應用範圍。 (2) The present invention adopts a design that can adjust the slope angle of the magnet to meet the load-bearing requirements of different rotating shafts, which will expand the application range of NdFeB permanent magnetic bearings.
(3)本發明採用心軸套內緣的錐面以夾緊心軸筒夾，可確保旋轉軸無間隙密合以提高旋轉軸中心與水平定位的精度，進而避免旋轉軸偏心而降低運轉功能。 (3) The present invention uses the tapered surface of the inner edge of the mandrel sleeve to clamp the mandrel collet, which can ensure that the rotating shaft is tightly connected without gaps to improve the accuracy of the center and horizontal positioning of the rotating shaft, thereby avoiding the eccentricity of the rotating shaft and reducing the operating function. .
10:外環部 10: Outer ring part
11:外環套 11: Outer ring sleeve
111:法蘭 111:Flange
112:螺絲孔 112:Screw hole
113:第一側壁面 113: First side wall surface
114:第二側壁面 114: Second side wall surface
115:一容置空間 115: One accommodation space
116:第三側壁面 116:Third side wall surface
117:接合孔 117:joint hole
12:外環磁鐵 12:Outer ring magnet
121:外環斜面 121: Outer ring slope
12A:內側外環磁鐵 12A: Inner outer ring magnet
12B:外側外環磁鐵 12B:Outside outer ring magnet
13:外環固定件 13: Outer ring fixing piece
131:外螺牙 131:External thread
20:旋轉部 20:Rotation part
21:心軸套 21: mandrel sleeve
211:第一錐面 211:First cone surface
212:接合面 212:joint surface
213:凸緣 213:Flange
214:螺絲孔 214:Screw hole
22:內環磁鐵 22:Inner ring magnet
221:內環斜面 221: Inner ring slope
22A:內側內環磁鐵 22A:Inside inner ring magnet
22B:外側內環磁鐵 22B:Outer inner ring magnet
23:內環固定件 23: Inner ring fixing piece
231:內螺牙 231: Internal thread
30:防塵隔片 30:Dust-proof spacer
40:螺絲 40:Screw
50:心軸筒夾 50: mandrel collet
51:法蘭 51:Flange
52:軸孔 52:Shaft hole
53:筒夾 53:Collet
54:螺絲孔 54:Screw hole
55:溝槽 55:Trench
56:第二錐面 56:Second cone surface
57:螺絲 57:Screw
60:磁浮軸承組件 60:Magnetic bearing assembly
70:旋轉軸 70:Rotation axis
71:軸承座 71:Bearing seat
圖1 係本發明釹鐵硼永久磁浮軸承之分解立體圖。 Figure 1 is an exploded perspective view of the NdFeB permanent magnetic bearing of the present invention.
圖2 係本發明釹鐵硼永久磁浮軸承之分解剖視圖。 Figure 2 is an exploded cross-sectional view of the NdFeB permanent magnetic bearing of the present invention.
圖3 係本發明釹鐵硼永久磁浮軸承之部分分解立體圖。 Figure 3 is a partially exploded perspective view of the NdFeB permanent magnetic bearing of the present invention.
圖4 係本發明釹鐵硼永久磁浮軸承之組合立體圖。 Figure 4 is an assembled perspective view of the NdFeB permanent magnetic bearing according to the present invention.
圖5 係本發明釹鐵硼永久磁浮軸承之組合剖視圖。 Figure 5 is an assembled cross-sectional view of the NdFeB permanent magnetic bearing according to the present invention.
圖6 係本發明釹鐵硼永久磁浮軸承之外環磁鐵與內環磁鐵之結構示意圖。 Figure 6 is a schematic structural diagram of the outer ring magnet and the inner ring magnet of the NdFeB permanent magnetic bearing of the present invention.
圖7係本發明釹鐵硼永久磁浮軸承之心軸筒夾與心軸套之結構示意圖。 Figure 7 is a schematic structural diagram of the spindle collet and spindle sleeve of the NdFeB permanent magnetic bearing of the present invention.
圖8係本發明釹鐵硼永久磁浮軸承之使用狀態參考圖。 Figure 8 is a reference diagram of the NdFeB permanent magnetic bearing in use according to the present invention.
以下係藉由特定的具體實施例說明本發明之實施方式，熟習此技藝之人士可由本說明書所揭示之內容輕易地了解本新型之其他優點與效。本發明亦可藉由其他不同的具體實施例加以施行或應用，本說明書中的各項細節亦可基於不同觀點與應用，在不悖離本發明之精神下進行各種修飾與變更。 The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.
首先，請參閱圖1~2所示，為本發明磁浮軸承組件60一較佳實施例之結構分解立體圖及剖視圖，包括：一外環部10，係由一外環套11、一外環磁鐵12、及一外環固定件13所構成；其中，該外環套11的法蘭111設有複數個螺絲孔112，可供螺絲41鎖固於外部之軸承座71(圖8有示)，且其內緣自內側至外側 依序設有一第一側壁面113、一第二側壁面114、一容置空間115與一第三側壁面116；該外環磁鐵12係嵌設於該容置空間115，其具有一內側外環磁鐵12A與一外側外環磁鐵12B，且其內緣設有相互對稱之外環斜面121；該外環固定件13設有外螺牙131，係鎖合在該外環套11側端之接合孔117，以使該外環磁鐵12固設於該外環套11內；一旋轉部20，係由一心軸套21、一內環磁鐵22、及一內環固定件23所構成；其中，該心軸套21的內緣設有一第一錐面211；該內環磁鐵22係套設於該心軸套21之外緣，其具有一內側內環磁鐵22A與一外側內環磁鐵22B，且其外緣設有相互對稱之內環斜面221；該內環固定件23設有內螺牙231，係鎖合在該心軸套21側端之接合面212，以使該內環磁鐵22固設於該心軸套21上。 First, please refer to Figures 1 to 2, which are structural exploded perspective views and cross-sectional views of a preferred embodiment of the magnetic bearing assembly 60 of the present invention, including: an outer ring portion 10, which is composed of an outer ring sleeve 11, an outer ring magnet 12. It is composed of an outer ring fixing member 13; wherein, the flange 111 of the outer ring sleeve 11 is provided with a plurality of screw holes 112 for screws 41 to be locked to the external bearing seat 71 (shown in Figure 8). And its inner edge is from the inside to the outside A first side wall 113, a second side wall 114, an accommodating space 115 and a third side wall 116 are provided in sequence; the outer ring magnet 12 is embedded in the accommodating space 115 and has an inner and outer The ring magnet 12A and an outer outer ring magnet 12B are provided with mutually symmetrical outer ring slopes 121 on their inner edges; the outer ring fixing member 13 is provided with external threads 131, which are locked on the side ends of the outer ring sleeve 11 The coupling hole 117 is used to fix the outer ring magnet 12 in the outer ring sleeve 11; a rotating part 20 is composed of a mandrel sleeve 21, an inner ring magnet 22, and an inner ring fixing member 23; wherein , the inner edge of the spindle sleeve 21 is provided with a first tapered surface 211; the inner ring magnet 22 is sleeved on the outer edge of the spindle sleeve 21, and has an inner inner ring magnet 22A and an outer inner ring magnet 22B. , and its outer edge is provided with mutually symmetrical inner ring slopes 221; the inner ring fixing member 23 is provided with internal threads 231, which are locked on the joint surface 212 of the side end of the mandrel sleeve 21, so that the inner ring magnet 22 is fixed on the mandrel sleeve 21.
本發明之旋轉部20係置於該外環部10之內緣，於組裝時先將一防塵隔片30置入外環部10並頂制其第一側壁面113，再將心軸套21置入外環部10之內緣，使其左側端面頂制該防塵隔片30後，嵌入內側外環磁鐵12A於外環套11的容置空間115內，並使其左側端面頂制在外環套11的第二側壁面114；套入內側內環磁鐵22A於該心軸套21之外緣，並使其左側端面頂制在心軸套21的凸緣213端後；再依序套入外側內環磁鐵22B及嵌入外側外環磁鐵12B，並將內環固定件23的內螺牙231鎖合在該心軸套21側端之接合面212，使該內環磁鐵22固設於該心軸套21上；之後將另一防塵隔片30套置於該內環固定件23的外緣，再將外環固定件13的外螺牙131鎖合在該外環套11側端之接合孔117內，使外環磁鐵12固設於外環套11內，則該二防塵隔片30將定位在該外環部10與該旋轉部20之左右兩側接觸面，以阻絕灰塵進入其內部；同時該外環固定件13將同步鎖合該內環固定件23之側端，以使該旋轉部20懸浮樞設於該外環部10內，並據以形成一磁浮軸承組件60。 The rotating part 20 of the present invention is placed on the inner edge of the outer ring part 10. During assembly, a dustproof spacer 30 is first placed into the outer ring part 10 and the first side wall surface 113 is pressed against it, and then the mandrel sleeve 21 is After inserting the inner edge of the outer ring 10 so that its left end surface is pressed against the dust-proof spacer 30, the inner outer ring magnet 12A is embedded in the accommodation space 115 of the outer ring sleeve 11, and its left end surface is pressed outward. The second side wall surface 114 of the ring sleeve 11; insert the inner inner ring magnet 22A on the outer edge of the mandrel sleeve 21, and make its left end surface push against the flange 213 end of the mandrel sleeve 21; and then insert it in sequence The outer inner ring magnet 22B is embedded in the outer outer ring magnet 12B, and the inner thread 231 of the inner ring fixing member 23 is locked on the joint surface 212 of the side end of the mandrel sleeve 21, so that the inner ring magnet 22 is fixed on the on the mandrel sleeve 21; then place another dustproof spacer 30 on the outer edge of the inner ring fixing member 23, and then lock the external thread 131 of the outer ring fixing member 13 on the side end of the outer ring sleeve 11 When the outer ring magnet 12 is fixed in the outer ring sleeve 11 in the joint hole 117, the two dust-proof spacers 30 will be positioned on the left and right contact surfaces of the outer ring part 10 and the rotating part 20 to prevent dust from entering. inside; at the same time, the outer ring fixing part 13 will synchronously lock the side ends of the inner ring fixing part 23, so that the rotating part 20 is suspended and pivoted in the outer ring part 10, and thereby forms a magnetic bearing assembly 60 .
請參閱圖6所示，係本發明釹鐵硼永久磁浮軸承之外環磁鐵12與內環 磁鐵22之結構示意圖；本發明之外環磁鐵12與內環磁鐵22係採用釹鐵硼永久磁鐵材質經一體壓製燒結成形，再經過精密研磨加工以確保定位精度，並根據磁浮須求採用可編程之充磁方式編輯磁路，使該內環斜面221與該外環斜面121具有相同的磁極(N級或S極不限)，則該兩斜面121/221之間將產生均勻分佈且彼此相斥的磁力，並據以使該內環斜面221與該外環斜面121之間的間隙(G)維持一固定值；其中該隙值在0.3mm~1.0mm之間，並可依據運轉平順度的需求進行調整。再者，本發明中該內環斜面221與該外環斜面121之角度值(θ)，可依據該旋轉軸70其承載重量的需求在15°~45°之間進行調整，而較佳的角度值(θ)則為25°±5°。 Please refer to Figure 6, which shows the outer ring magnet 12 and the inner ring of the NdFeB permanent magnetic bearing of the present invention. Structural diagram of the magnet 22; the outer ring magnet 12 and the inner ring magnet 22 of the present invention are made of NdFeB permanent magnet material and are integrally pressed and sintered. They are then precision ground and processed to ensure positioning accuracy, and are programmable according to the magnetic levitation requirements. The magnetization method edits the magnetic circuit so that the inner ring slope 221 and the outer ring slope 121 have the same magnetic pole (N-level or S pole is not limited), then the two slopes 121/221 will be evenly distributed and mutually exclusive. The repulsive magnetic force keeps the gap (G) between the inner ring slope 221 and the outer ring slope 121 at a fixed value; the gap value is between 0.3mm~1.0mm, and can be determined according to the smoothness of the operation. needs to be adjusted. Furthermore, in the present invention, the angle value (θ) of the inner ring slope 221 and the outer ring slope 121 can be adjusted between 15° and 45° according to the load-bearing requirements of the rotating shaft 70 , and preferably The angle value (θ) is 25°±5°.
請進一步參閱圖3~5所示，圖式中包括一心軸筒夾50、一磁浮軸承組件60與一旋轉軸70；其中，該心軸筒夾50，具有一法蘭51、一軸孔52及一筒夾53，該法蘭51設有複數個與該心軸套21的凸緣213面相對應的螺絲孔54/214，可藉由一螺絲57予以鎖定。且該筒夾53之周緣設有複數個溝槽55，而該筒夾53外緣則設有一與該心軸套21之第一錐面211相對應之第二錐面56；本發明的應用方式，係將該磁浮軸承組件60之外環套11以螺絲40穿入螺絲孔112將其鎖固於一預定位置之軸承座71，再將該心軸筒夾50穿入該磁浮軸承組件60之心軸套21內緣，並使該旋轉軸70嵌入該心軸筒夾50的軸孔52內，以螺絲40鎖合該心軸筒夾50與該心軸套21的螺絲孔，則該心軸筒夾50將夾持該旋轉軸70，並使其定位在該旋轉部20內，則該旋轉軸70將懸浮在該軸承座71上並得以高速旋轉。 Please further refer to Figures 3 to 5, which include a spindle collet 50, a magnetic bearing assembly 60 and a rotating shaft 70; wherein, the spindle collet 50 has a flange 51, an axis hole 52 and A collet 53, the flange 51 is provided with a plurality of screw holes 54/214 corresponding to the flange 213 surface of the mandrel sleeve 21, which can be locked by a screw 57. And the periphery of the collet 53 is provided with a plurality of grooves 55, and the outer edge of the collet 53 is provided with a second conical surface 56 corresponding to the first conical surface 211 of the mandrel sleeve 21; Application of the Invention The method is to insert the screw 40 into the screw hole 112 of the outer ring sleeve 11 of the magnetic bearing assembly 60 to lock it in the bearing seat 71 at a predetermined position, and then insert the mandrel collet 50 into the magnetic bearing assembly 60 The inner edge of the spindle sleeve 21, and the rotating shaft 70 is embedded in the shaft hole 52 of the spindle collet 50, and the screws 40 are used to lock the screw holes of the spindle collet 50 and the spindle sleeve 21, then the The mandrel collet 50 will clamp the rotating shaft 70 and position it in the rotating part 20 , then the rotating shaft 70 will be suspended on the bearing seat 71 and rotate at high speed.
請參閱圖7所示，係本發明釹鐵硼永久磁浮軸承之心軸筒夾50與心軸套21之結構示意圖，該心軸筒夾50之筒夾53外緣與該心軸套21之第一錐面211相對應之第二錐面56，使二者形成互為推拔斜度(P)的關係，當該心軸筒夾50之筒夾53愈向內位移時，該筒夾53之溝槽55會被壓縮，導致筒夾53之內徑(D)縮小。進而緊迫該旋轉軸70使其定位在該旋轉部20內。且當鬆開該螺絲57時，該心軸 筒夾50即可軸向位移，當該筒夾53向外位移時，溝槽55會鬆開，導致筒夾53之內徑(D)變大。如此一來，即可如圖8所示，使該旋轉軸70可軸向位移，達到調整便捷與定位準確之功效增進。 Please refer to Figure 7, which is a schematic structural diagram of the spindle collet 50 and the spindle sleeve 21 of the NdFeB permanent magnetic bearing of the present invention. The outer edge of the collet 53 of the spindle collet 50 and the spindle sleeve 21 are The first tapered surface 211 corresponds to the second tapered surface 56, so that the two form a relationship of pushing inclination (P) with each other. When the collet 53 of the mandrel collet 50 is displaced more inward, the collet The groove 55 of 53 will be compressed, causing the inner diameter (D) of the collet 53 to shrink. Then, the rotating shaft 70 is pressed to be positioned in the rotating part 20 . And when the screw 57 is loosened, the spindle The collet 50 can be axially displaced. When the collet 53 is displaced outward, the groove 55 will be loosened, causing the inner diameter (D) of the collet 53 to become larger. In this way, as shown in FIG. 8 , the rotating shaft 70 can be axially displaced, thereby improving the efficiency of convenient adjustment and accurate positioning.
藉助前揭特徵，本發明「釹鐵硼永久磁浮軸承」具有之效益需再闡明者有： With the help of the aforementioned characteristics, the benefits of the "NdFeB permanent magnetic bearing" of the present invention need to be further explained:
一、該外環磁鐵12與內環磁鐵22係採用釹鐵硼磁鐵材質一體壓製燒結成形，再經過精密研磨加工以確保定位精度，並根據磁浮須求採用可編程之充磁方式編輯磁路，故而可增強吸力與斥力，且磁力分布可達均勻穩定，並可進一步控制其相斥磁力的間距。 1. The outer ring magnet 12 and the inner ring magnet 22 are made of neodymium iron boron magnet material and are integrally pressed and sintered. They are then precision ground and processed to ensure positioning accuracy. The programmable magnetization method is used to edit the magnetic circuit according to the magnetic levitation requirements. Therefore, the attraction and repulsion can be enhanced, the magnetic force distribution can be uniform and stable, and the spacing of the repulsive magnetic forces can be further controlled.
二、次者，本發明採用可調整磁鐵之斜面角度的設計，以因應不同轉軸承載重量的需求，將可擴大釹鐵硼永久磁浮軸承的應用範圍。 Secondly, the present invention adopts a design that can adjust the slope angle of the magnet to meet the load-bearing requirements of different rotating shafts, which will expand the application range of NdFeB permanent magnetic bearings.
三、再者，本發明採用該心軸套21內緣的錐面以夾緊該心軸筒夾50，可確保該旋轉軸70無間隙密合以提高該旋轉軸70中心與水平定位的精度，進而避免旋轉軸70偏心而降低運轉功能。 3. Furthermore, the present invention uses the tapered surface of the inner edge of the mandrel sleeve 21 to clamp the mandrel collet 50, which can ensure that the rotating shaft 70 is tightly sealed without gaps to improve the accuracy of the center and horizontal positioning of the rotating shaft 70. , thereby avoiding the eccentricity of the rotating shaft 70 and reducing the operating performance.
綜上所述，本發明所揭示之技術手段，確具「新穎性」、「進步性」及「可供產業利用」等發明專利要件，祈請 鈞局惠賜專利，以勵發明，無任德感。 In summary, the technical means disclosed in the present invention indeed meet the requirements for invention patents such as "novelty", "progressivity" and "available for industrial utilization". We pray that the Jun Bureau will grant patents to encourage inventions without any restrictions. Sense of morality.
惟，上述所揭露之圖式、說明，僅為本發明之較佳實施例，大凡熟悉此項技藝人士，依本案精神範疇所作之修飾或等效變化，仍應包括在本案申請專利範圍內。 However, the above disclosed drawings and descriptions are only preferred embodiments of the present invention. Modifications or equivalent changes made by those familiar with the art in accordance with the spirit and scope of this case should still be included in the patent application scope of this case.
10:外環部 10: Outer ring part
20:旋轉部 20:Rotation part
21:心軸套 21: mandrel sleeve
211:第一錐面 211:First cone surface
213:凸緣 213:Flange
214:螺絲孔 214:Screw hole
40:螺絲 40:Screw
50:心軸筒夾 50: mandrel collet
51:法蘭 51:Flange
52:軸孔 52:Shaft hole
53:筒夾 53:Collet
54:螺絲孔 54:Screw hole
55:溝槽 55:Trench
56:第二錐面 56:Second cone surface
57:螺絲 57:Screw
60:磁浮軸承組件 60:Magnetic bearing assembly
70:旋轉軸 70:Rotation axis
Claims (5)
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| TW111119069A TWI829168B (en) | 2022-05-23 | 2022-05-23 | NdFeB permanent magnetic bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| TW111119069A TWI829168B (en) | 2022-05-23 | 2022-05-23 | NdFeB permanent magnetic bearing |
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| TW202347926A TW202347926A (en) | 2023-12-01 |
| TWI829168B true TWI829168B (en) | 2024-01-11 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW524929B (en) * | 2001-12-24 | 2003-03-21 | Ind Tech Res Inst | Magnetic bearing |
| WO2011024470A2 (en) * | 2009-08-28 | 2011-03-03 | 国立大学法人東京工業大学 | Disposable magnetic-suspension centrifugal pump |
| TW201517463A (en) * | 2013-08-20 | 2015-05-01 | sheng-lian Lin | Motor |
| CN112615507A (en) * | 2020-12-24 | 2021-04-06 | 珠海格力电器股份有限公司 | Magnetic suspension bearing assembly, motor and compressor |
| TW202201879A (en) * | 2020-06-15 | 2022-01-01 | 大陸商深圳市東維豐電子科技股份有限公司 | Motor with maglev inner rotor capable of achieving the effects of reducing noises and increasing service life and keeping the shaft rod rotating stably |
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2022
- 2022-05-23 TW TW111119069A patent/TWI829168B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW524929B (en) * | 2001-12-24 | 2003-03-21 | Ind Tech Res Inst | Magnetic bearing |
| WO2011024470A2 (en) * | 2009-08-28 | 2011-03-03 | 国立大学法人東京工業大学 | Disposable magnetic-suspension centrifugal pump |
| TW201517463A (en) * | 2013-08-20 | 2015-05-01 | sheng-lian Lin | Motor |
| TW202201879A (en) * | 2020-06-15 | 2022-01-01 | 大陸商深圳市東維豐電子科技股份有限公司 | Motor with maglev inner rotor capable of achieving the effects of reducing noises and increasing service life and keeping the shaft rod rotating stably |
| CN112615507A (en) * | 2020-12-24 | 2021-04-06 | 珠海格力电器股份有限公司 | Magnetic suspension bearing assembly, motor and compressor |
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