CN101707425A - High-speed motor device with ceramic shaft core - Google Patents
High-speed motor device with ceramic shaft core Download PDFInfo
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- CN101707425A CN101707425A CN200910188243A CN200910188243A CN101707425A CN 101707425 A CN101707425 A CN 101707425A CN 200910188243 A CN200910188243 A CN 200910188243A CN 200910188243 A CN200910188243 A CN 200910188243A CN 101707425 A CN101707425 A CN 101707425A
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Abstract
The invention discloses a high-speed motor device with a ceramic shaft core, which belongs to the field of alternating current asynchronous motors. The motor structure mainly comprises a shell, a zirconia ceramic main shaft, a zirconia ceramic ferrule, a hot-pressed silicon nitride ceramic ball, a stator, a rotor, a bearing pre-loading device, a lubricating device and a cooling device, wherein the rotor is a closed circular groove; and the stator is a round bottom groove. The rotor of the motor is thermally sleeved with a zirconia ceramic rotating shaft. A ceramic bearing is pre-loaded through a pre-loaded spring. The high-speed motor device adopts a zirconia ceramic material as a main shaft component to ensure that the high-speed motor has good performance of small rotary inertia, convenient control, high temperature resistance, environmental protection, corrosion resistance and the like.
Description
Technical field
The invention belongs to the AC induction motor field, particularly a kind of high-speed motor device with ceramic shaft core.
Background technology
High-speed machining is the important means that improves cutting effect, crudy, machining accuracy and cut down finished cost.The high speed of lathe is the development trend of present lathe.Thereby be considered to one of promising advanced manufacturing of 21 century.No matter be general NC lathe or virtual-shaft machine tool, realize that the critical component of high speed is still high-speed electric expreess locomotive, it is the core component of Digit Control Machine Tool, and its performance has directly determined the machining accuracy and the production efficiency of whole lathe.Because square being directly proportional of the centrifugal force on the high speed rotor of motor and linear velocity, high-speed electric expreess locomotive requires to have very high mechanical strength and reaches lower moment of inertia; Utilize ceramic material to replace traditional metal materials,-------bearing and rotating shaft are problems highly significant to make the high-speed electric expreess locomotive main parts size.Utilize the main purpose of engineering ceramics as Digit Control Machine Tool high-speed spindle bearing and spindle material, be centrifugal force and inertia force in order to reduce the spindle unit high speed rotating, improve the rigidity and the precision of main axle unit, to adapt to the requirement of main axle unit high speed and precise treatment.High-performance hot-isostatic pressure silicon nitride (HIPSN) pottery is applied to the design of ball in the rolling bearing owing to have good composite characteristics such as light specific gravity, wear-resisting, high temperature resistant, high elastic modulus, high compressive strength and toughness, nonmagnetic, insulation.In addition, toughened zirconia ceramics (ZTC) has high tenacity, high-flexural strength and high-wearing feature, and conductive coefficient is little, and thermal coefficient of expansion approaches advantages such as steel, therefore uses it for high-speed electric expreess locomotive rotating shaft and bearing ring.In addition, the shape of rotor punching and structure play an important role to performances such as the startability of asynchronous machine, level of torque, and can be suitable for the rotor groove mechanism design of ceramic shaft core high-speed electric expreess locomotive, are problems highly significant.
Summary of the invention
The object of the present invention is to provide a kind of high-speed motor device with ceramic shaft core, machine shaft is that zirconia ceramics material, motor bearings lasso select for use ceramic material, bearing ball to select silicon nitride ceramic material for use, structural designs such as the rotor of motor and zirconia ceramics main shaft hot jacket, it is little to make high-speed electric expreess locomotive have moment of inertia, be convenient to control, high temperature resistant, environmental protection, good performance such as corrosion-resistant.
The objective of the invention is to be achieved through the following technical solutions:
A kind of high-speed motor device with ceramic shaft core, this electric machine structure mainly includes shell, zirconia ceramics main shaft, zirconia ceramic ferrule, hot press silicon nitride ceramic ball, stator, rotor, bearing pre-tightened device, lubricating arrangement, cooling device, its rotor is the circular recess of remaining silent, and stator is a round bottomed vessel.
Described a kind of high-speed motor device with ceramic shaft core, the rotor of its motor and zirconia ceramics rotating shaft hot jacket.
Described a kind of high-speed motor device with ceramic shaft core, its ceramic bearing carries out pretension by preloading spring.
Advantage of the present invention and effect are:
1, to adopt zirconia ceramics material be spindle unit in the present invention, and it is little to make high-speed electric expreess locomotive have moment of inertia, is convenient to control, high temperature resistant, environmental protection, good performance such as corrosion-resistant.
2, motor of the present invention adopts the groove rotor of remaining silent, and this groove of remaining silent can weaken kelvin effect, and under equal conditions, motor adopts the resistance of rotor bar when remaining silent groove to increase the coefficient minimum, can reduce the loss of electric machine.Moreover, adopt the groove of remaining silent effectively to weaken the motor slot ripples, thereby reduce motor stray loss, improve electric efficiency.
3, to adopt zirconia ceramics material be rotating axis component in the present invention, will guarantee definitely that the magnetic line of force can not pass through rotating shaft system, thereby avoid unnecessary loss, raises the efficiency.
Description of drawings
Fig. 1 is a ceramic shaft core high-speed electric expreess locomotive of the present invention;
Fig. 2 is a motor section model of the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Main feature of the present invention is that machine shaft adopts zirconia ceramics material, and the motor bearings lasso adopts ceramic material, and bearing ball adopts the full ceramic structure of ceramic material.Rotor is the circular recess of remaining silent, and stator is a round bottomed vessel.Pass through hot jacket method Desing of Interference Joint between rotor and the ceramic rotating shaft.High-speed electric expreess locomotive of the present invention has improved rigidity, high speed, thermal endurance, the resistance to wear of motor owing to rotating shaft, bearing adopt ceramic material.This rotor groove is the circular recess of remaining silent, and this groove of remaining silent can weaken the kelvin effect phenomenon, can reduce the loss of electric machine, can effectively weaken the motor slot ripples, thereby reduces motor stray loss, improves electric efficiency.
This ceramic shaft core high-speed electric expreess locomotive structure mainly comprises rotating shaft, bearing, stator, rotor, casing, cooling device, lubricating arrangement and bearing pre-tightened device.Axle core (rotating shaft), bearing ring and the bearing ball of motor all selected ceramic material for use in the ceramic shaft core high-speed electric expreess locomotive of invention.The rotor structure design is that rotor design is the groove circular recess structure of remaining silent.Rotor adopts the interference of hot jacket mode to be connected with ceramic main shaft.Stator is a round bottomed vessel, two layer winding.
As shown in Figure 1, rotating shaft 1 is selected zirconia ceramics material for use with bearing ring 3, and bearing ball is selected silicon nitride ceramic material for use.Rotating shaft 1 is adopted hot jacket mode interference fit joint with rotor 4.The recirculated water cooling is adopted in the cooling of stator 5.The pretension of bearing is realized the spring pretension by pre-tightening apparatus 6.On end ring 2, offer oilhole, realize bearing lubrication.
Fig. 2 adopts the motor model of the groove rotor of remaining silent, and is about to rotor design and is the groove circular recess structure of remaining silent.Stator is round bottomed vessel, two layer winding, 4 utmost point motors.Ceramic shaft core has bearing channel in this rotating shaft, replaces bearing inner race.
Claims (3)
1. high-speed motor device with ceramic shaft core, it is characterized in that this electric machine structure mainly includes shell, zirconia ceramics main shaft, zirconia ceramic ferrule, hot press silicon nitride ceramic ball, stator, rotor, bearing pre-tightened device, lubricating arrangement, cooling device, its rotor is the circular recess of remaining silent, and stator is a round bottomed vessel.
2. a kind of high-speed motor device with ceramic shaft core according to claim 1 is characterized in that the rotor and the zirconia ceramics rotating shaft hot jacket of motor.
3. a kind of high-speed motor device with ceramic shaft core according to claim 1 is characterized in that ceramic bearing carries out pretension by preloading spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101882431A CN101707425B (en) | 2009-10-28 | 2009-10-28 | High-speed motor device with ceramic shaft core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101882431A CN101707425B (en) | 2009-10-28 | 2009-10-28 | High-speed motor device with ceramic shaft core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101707425A true CN101707425A (en) | 2010-05-12 |
| CN101707425B CN101707425B (en) | 2011-06-15 |
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ID=42377625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101882431A Active CN101707425B (en) | 2009-10-28 | 2009-10-28 | High-speed motor device with ceramic shaft core |
Country Status (1)
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| CN (1) | CN101707425B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141081A (en) * | 2011-02-12 | 2011-08-03 | 四川达宇特种车辆制造厂 | Miniature engine rotor bearing pre-tightening system |
| CN111313582A (en) * | 2020-03-27 | 2020-06-19 | 东华大学 | Small high-speed three-phase asynchronous motor and design method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100365295C (en) * | 2004-07-08 | 2008-01-30 | 沈阳建筑大学 | High precision hot press silicon nitride ceramic ball bearing and its manufacturing method |
| CN1980004A (en) * | 2005-12-05 | 2007-06-13 | 乐金电子(天津)电器有限公司 | Electromechanical part of rotary compressor |
| CN100436009C (en) * | 2006-11-02 | 2008-11-26 | 沈阳建筑大学 | Hot-isostatic pressure silicon nitride all-ceramic electric main shaft and its mfg. method |
| CN100449162C (en) * | 2006-11-02 | 2009-01-07 | 沈阳建筑大学 | Inner ring less heating isostatic pressure silicon nitride full ceramic ball bearing and its manufacturing method |
-
2009
- 2009-10-28 CN CN2009101882431A patent/CN101707425B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141081A (en) * | 2011-02-12 | 2011-08-03 | 四川达宇特种车辆制造厂 | Miniature engine rotor bearing pre-tightening system |
| CN111313582A (en) * | 2020-03-27 | 2020-06-19 | 东华大学 | Small high-speed three-phase asynchronous motor and design method |
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| Publication number | Publication date |
|---|---|
| CN101707425B (en) | 2011-06-15 |
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