CN201537703U - Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft - Google Patents
Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft Download PDFInfo
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- CN201537703U CN201537703U CN2009202476500U CN200920247650U CN201537703U CN 201537703 U CN201537703 U CN 201537703U CN 2009202476500 U CN2009202476500 U CN 2009202476500U CN 200920247650 U CN200920247650 U CN 200920247650U CN 201537703 U CN201537703 U CN 201537703U
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- bearing
- main shaft
- electric main
- ceramic
- outer ring
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Abstract
The utility model discloses a steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft, which relates to a mechanical member. The electric main shaft comprises an electric main shaft shell (7), an electric main shaft ceramic rotating shaft (1), a bearing inner ring (2) of a mixed material bearing device, a bearing outer ring (3), a motor stator (6), a rotor (5), a cooling device (4), a bearing pre-tensioning device (8) and a lubricating device; the bearing inner ring (2) of the bearing device and a bearing ball are made of ceramic materials, a bearing retainer is made of resin material, and the bearing outer ring (3) is made of steel material; and the bearing can be assembled. The utility model provides the steel bearing outer ring, the ceramic rotating shaft, the ceramic bearing inner ring and a ceramic ball mixed high-speed electric main shaft. Zirconium oxide and hot pressing silicon nitride are adopted as materials for the main shaft, the bearing inner ring and the bearing ball, so the weight of the rotary part of the main shaft is lightened and the rotational speed is improved. The bearing outer ring is made of the steel material, so the machining difficulty is reduced and the shock-proof effect is increased.
Description
Technical field
The utility model relates to a kind of mechanical component, and particularly a kind of steel bearing outer ring mixes the high-speed electric main shaft that uses with the ceramic bearing inner ring.
Background technology
The main shaft of modern high-grade lathe more and more begins to answer the electricity consumption main shaft.Particularly on high-speed processing machine tool, electric main shaft is convenient to control with it, is convenient to the premium properties of speed governing and more apparent advantage.In Digit Control Machine Tool, to the requirement of electric main shaft mainly in the following aspects: one, require the rotary inertia of electric main shaft tumbler little, in the high-speed motion process, be convenient to control.Two, in the high-speed cruising process, can therefore require electric main shaft that good cooling link will be arranged on the one hand because mechanical friction and electromagnetic consumable produce heat, also require electric main shaft that certain hear resistance will be arranged on the other hand.Three, require electric main shaft that enough rigidity and long life-span are arranged.The solution of these problems, the material of electric main shaft critical component----rotating shaft and bearing selects to play crucial effects.Performances such as that ceramic material has is wear-resisting, anti-corrosion, high temperature resistant, electric insulation, magnetic conduction, high strength, high rigidity, proportion be not little, use rotating shaft and the bearing material of pottery as electric main shaft, can reach requirements such as wearing and tearing are little, noise is low, vibration is little, can make electric spindle speed higher, under rigorous environment and low lubricated occasion, move, and significantly improve its Performance And Reliability.But,, influence the whole serviceability of electric main shaft because ceramic material is very difficult assurance of raceway groove machining accuracy of difficult-to-machine material, particularly bearing outer ring.In addition, in view of bearing outer ring is non-rotating, under high speed to the requirement that does not have light specific gravity of material.Therefore, when the electric main shaft of design, the material selection bearing steel of bearing outer ring, rotating shaft (bearing inner race) and ball material are selected pottery for use, design a kind of high-speed electric main shaft of combined bearing, on the basis that makes full use of the ceramic material premium properties, play cushioning effect to a certain extent as bearing outer ring by using steel ring.This kind design has not only solved the ceramic bearing quality problems, also provides new approaches for manufacturing and designing of electric main shaft.
Summary of the invention
The purpose of this utility model is to provide a kind of steel bearing outer ring to mix the high-speed electric main shaft that uses with ceramic rotating shaft, ceramic bearing inner ring, Ceramic Balls.Adopting zirconia and hot pressed silicon nitride (HPSN) is main shaft and bearing inner race, bearing ball material, has alleviated the weight of main axis rotation part, has improved rotary speed.Bearing outer ring utilizes steel material, has reduced difficulty of processing, has increased the antivibration effect.
The purpose of this utility model is achieved through the following technical solutions:
A kind of steel bearing outer ring mixes the high-speed electric main shaft that uses with the ceramic bearing inner ring, include electric main shaft housing, the rotating shaft of electric main shaft pottery, the bearing inner race of composite material bearing arrangement, bearing outer ring, motor stator, rotor, cooling device, bearing pre-tightened device, lubricating arrangement; Bearing arrangement bearing inner race and bearing ball adopt ceramic material, and retainer is a resin material, and bearing outer ring is a steel material; But bearing adopts assembled.The pretension of the bearing of bearing pre-tightened device adopts the spring pretension, by the radical and the length adjustment pretightning force size of preloading spring.Bearing-lubricating device adopts the lubricated respectively fog lubrication mode of front and back bearings, and by adopting one road mode of giving vent to anger to make mist of oil force by rotor surface rotor to be forced cooling.Stator adopts water-cooling pattern, loads onto the water jacket recirculated water cooling by hot cover process in electric main shaft housing.Pottery rotating shaft and extension bar adopt the face of cylinder to add end face location or conical surface location.
Advantage of the present utility model and effect are:
1, the utility model adopts the material of pottery as main shaft, bearing inner race and bearing ball, has alleviated electric main shaft rotary inertia, has improved the rigidity of resistance to elevated temperatures and axis system, the service life of having saved the heat treatment link, having had energy-conserving and environment-protective and corrosion resistant effect, having improved axis system.
2, the utility model adopts bearing steel material as the bearing outer ring material, with respect to full-ceramic bearing, has reduced difficulty of processing, has improved the precision of parts of bearings, has reduced the vibration amplitude and the noise of electric main shaft, has improved the heat-sinking capability of bearing arrangement.
3, the utility model lubricating system adopts the fog lubrication mode.Front and back bearings adopts the two-way air inlet, and one the road gives vent to anger, realizes the pressure cooling to rotor.
Description of drawings
Fig. 1 is the utility model combined bearing electricity main axle structure figure;
Fig. 2 is the utility model bearing lubrication and cooling principle figure;
Fig. 3 is the utility model combined bearing structural representation;
Fig. 4 is the utility model end ring structural representation.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
This electricity main axle structure mainly comprises shell, ceramic main shaft, ceramic bearing inner ring, Ceramic Balls, steel bearing outer ring, stator, rotor, cooling device, lubricating arrangement and bearing pre-tightened device.The bearing enclose of this electricity main shaft is a different materials.Inner ring adopts ceramic material, has guaranteed the big rigidity of electric main axis rotation part and the requirement of low rotor inertia.Steel material is adopted in the outer ring, has reduced difficulty of processing, and has played certain damping effect.Simultaneously, the fog lubrication mode that the lubricated employing two-way air inlet, a tunnel of its front and back bearings is given vent to anger, and make mist of oil by force by rotor surface, realize the cooling of rotor.This electric mainshaft bearing adopts the mode of fog lubrication, when satisfying lubricating requirement, by the mode that the control mist of oil flows to, realizes the pressure cooling of rotor.
As shown in Figure 1, the cooling device 4 of hot jacket water jacket forms enclosure space in the electric main shaft housing 7, by water inlet and delivery port are set, forms the water circulation, is used for cooling motor stator 6.Pottery rotating shaft 1 of electricity main shaft and bearing inner race 2 and bearing ball are ceramic material, and bearing outer ring 3 is a steel material, and they form support component.The pretension of main shaft bearing is finished by pre-tightening apparatus 8, and the radical of pretightning force and preloading spring and the decrement of spring are relevant.
Fig. 2 is the bearing lubrication and the rotor cooling system schematic diagram of this electricity main shaft, and during air inlet, front and back bearings respectively is provided with one road lubricant passage way, and by the mode of fog lubrication, realization is lubricated to bearing, takes away the bearing heat simultaneously.When giving vent to anger, the mode that adopts the rear end to give vent to anger, the lubricant mist of end bearing is forced the air gap by 6 of rotor 5 and motor stators before making, and realizes the pressure of rotor is cooled off.
Claims (1)
1. a steel bearing outer ring mixes the high-speed electric main shaft that uses with the ceramic bearing inner ring, it is characterized in that including electric main shaft housing (7), the rotating shaft (1) of electricity main shaft pottery, the bearing inner race of composite material bearing arrangement (2), bearing outer ring (3), motor stator (6), rotor (5), cooling device (4), bearing pre-tightened device (8), lubricating arrangement, but bearing is an assembled, bearing pre-tightened device (8) is the spring pretension, bearing-lubricating device is that front and back bearings is lubricated respectively, one the road gives vent to anger lubricates the version of rotor, stator is the water-cooling structure form, by hot cover process installing upper water sleeve, ceramic rotating shaft and extension bar are that the face of cylinder adds end face location or conical surface location structure in electric main shaft housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202476500U CN201537703U (en) | 2009-10-28 | 2009-10-28 | Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202476500U CN201537703U (en) | 2009-10-28 | 2009-10-28 | Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201537703U true CN201537703U (en) | 2010-08-04 |
Family
ID=42589158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202476500U Expired - Lifetime CN201537703U (en) | 2009-10-28 | 2009-10-28 | Steel bearing outer ring and ceramic bearing inner ring mixed high-speed electric main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201537703U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126030A (en) * | 2011-03-04 | 2011-07-20 | 昆山森力玛电机有限公司 | Direct-drive motorized spindle of lathe |
| CN103752863A (en) * | 2013-12-31 | 2014-04-30 | 广州市昊志机电股份有限公司 | Ball high-speed motorized spindle |
| CN114434323A (en) * | 2021-12-31 | 2022-05-06 | 南京理工大学 | High-rigidity numerical control grinding wheel dressing electric spindle |
-
2009
- 2009-10-28 CN CN2009202476500U patent/CN201537703U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126030A (en) * | 2011-03-04 | 2011-07-20 | 昆山森力玛电机有限公司 | Direct-drive motorized spindle of lathe |
| CN102126030B (en) * | 2011-03-04 | 2013-04-03 | 昆山森力玛电机有限公司 | Direct-drive motorized spindle of lathe |
| CN103752863A (en) * | 2013-12-31 | 2014-04-30 | 广州市昊志机电股份有限公司 | Ball high-speed motorized spindle |
| CN103752863B (en) * | 2013-12-31 | 2016-05-11 | 广州市昊志机电股份有限公司 | A kind of speed electric rolling-ball main shaft |
| CN114434323A (en) * | 2021-12-31 | 2022-05-06 | 南京理工大学 | High-rigidity numerical control grinding wheel dressing electric spindle |
| CN114434323B (en) * | 2021-12-31 | 2023-08-18 | 南京理工大学 | High-rigidity numerical control grinding wheel dressing motorized spindle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100804 |