CN105458306A - High-speed electric main shaft device where ultra-precise angular contact ball and cylindrical roller bearings are used - Google Patents
High-speed electric main shaft device where ultra-precise angular contact ball and cylindrical roller bearings are used Download PDFInfo
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- CN105458306A CN105458306A CN201511028787.3A CN201511028787A CN105458306A CN 105458306 A CN105458306 A CN 105458306A CN 201511028787 A CN201511028787 A CN 201511028787A CN 105458306 A CN105458306 A CN 105458306A
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- front support
- support bearing
- bearing
- oil
- lubrication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
- B23Q11/121—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction
- B23Q11/123—Arrangements for cooling or lubricating parts of the machine with lubricating effect for reducing friction for lubricating spindle bearings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a high-speed electric main shaft experimental device supported by an angular contact ball and cylindrical roller bearings. A single column of cylindrical roller bearings with conical holes are arranged at the rear end of a rotating shaft. A first front supporting bearing, a second front supporting bearing, a third front supporting bearing and a fourth front supporting bearing are arranged at the front end of the rotating shaft. The first front supporting bearing and the second front supporting bearing are connected in series to form a group. The third front supporting bearing and the fourth front supporting bearing are connected in series to form a group. The two groups are arranged in a back-to-back manner. A gap between the two groups is supplemented by a shaft shoulder sleeve, and the two groups are separated through a front spring baffle. The first front supporting bearing and the second front supporting bearing are testing bearings. The third front supporting bearing and the fourth front supporting bearing are auxiliary supporting bearings. The actual work environment needed for monitoring and researching a rolling bearing in the high-speed electric main shaft device is achieved, the structure supporting rigidity is good, precise and quantitative lubrication is achieved, the testing bearings can be conveniently replaced, and precision stability of an electric main shaft is guaranteed during long-time running.
Description
Technical field
The invention belongs to machine tool high speed electro spindle technical field, be specifically related to a kind of high-speed electric main shaft device using ultraprecise angular contact ball and cylinder roller bearing.
Background technology
High-speed electric main shaft is the key of high-speed cutting processing, usually uses variable-frequency motor Direct driver.Rotor and electro spindle are made of one by built-in type electro spindle, the rotor of motor is simultaneously as the electro spindle of lathe, and motor cabinet is also the housing of spindle motor unit, thus " Zero-drive Chain " that achieve between motor and electrical spindle for machine tool, the mechanical electric axis system overcoming traditional transmission mode additionally increases rotary inertia, large and the easy shortcoming such as skidding of vibration & noise, electro spindle is lightweight, inertia is little, compact conformation, dynamic characteristic is excellent, simplify machine overall design, improve the dynamic balancing of lathe, electro spindle is made more easily to realize high precision int and high rotating speed.
When electro spindle High Rotation Speed and rotating speed are raised to a certain degree, the friction power loss of the lubricating oil film of supporting electric main shaft can sharply increase, the rigidity of lubricating film and bearing capacity is caused significantly to decline, if take away the heat produced because power consumption increases not in time, can there is thermal deformation and affect the performance of high-speed machine tool in electro spindle and spring bearing thereof; The amount of unbalance of electro spindle self also can raise along with rotating speed and obviously increase, and the precision of electro spindle also obviously can decline by it affects.
In order to ensure the measurement data accurate and effective of test bearing, existing apparatus needs to carry out some to be improved.First, existing rolling bearing experimental provision mainly carries out Installation and Measurement for independent bearing, and rolling bearing in electro spindle is very large by the impact of electric chief axis system when running, for the research of the electric mainshaft bearing of rolling bearing under inoperative environment and service condition, this class bearing real runnability under actual condition all can not be reacted; Secondly, existing high-speed electric main shaft device has and accurately cannot lubricate the carrying out of single specific bearing, to the shortcoming of the dismounting difficulty of test bearing; Finally, because test bearing needs running at a high speed or under ultrahigh speed, so existing apparatus need be strengthened further for the stability of the test environment at test bearing place.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide the high-speed electric main shaft device using ultraprecise angular contact ball and cylinder roller bearing, there is high rigidity, high-accuracy, long-life, meet the feature of rolling bearing actual measurement operating mode, accurate quantification lubrication and easy disassembly test bearing, be particularly useful for the status monitoring of complicated processing under the conditions of work such as high speed, high-accuracy, high rigidity and test bearing.
For achieving the above object, the present invention is by the following technical solutions:
Use the high-speed electric main shaft experimental provision of angular contact ball and cylinder roller bearings, comprise housing 26, housing 26 is as motor base, cooling jacket 25 interference fit is in housing 26, motor stator 24 interference fit is installed in cooling jacket 25, rotor 23 interference fit is installed in rotating shaft 2, and rotor 23 is corresponding with motor stator 24, the rear end of rotating shaft 2 is provided with the single row roller bearing 31 of band taper hole, single row roller bearing 31 is as rear support bearing, can the pretightning force of adjusting device, adapt to radial support displacement and Axial Thermal displacement, the front end of rotating shaft 2 is provided with the first front support bearing 6, second front support bearing 13, 3rd front support bearing 16 and the 4th front support bearing 21, first front support bearing 6 and the second front support bearing 13 are connected into one group, 3rd front support bearing 16 and the 4th front support bearing 21 are connected into another group, two groups of back-to-back configurations again, gap between two groups shaft shoulder cover 15 supplements, and separate with front spring baffle plate 14, first front support bearing 6 and the second front support bearing 13 are test bearing, be the test bearing can carrying out dismounting, 3rd front support bearing 16 and the 4th front support bearing 21 are as supplemental support bearing.
Described the first front support bearing 6, second front support bearing 13, the 3rd front support bearing 16 and the 4th front support bearing 21 adopt ultraprecise angular contact ball bearing.
The first described front support bearing 6, second front support bearing 13, front large lid 8 is provided with outside 3rd front support bearing 16 and the 4th front support bearing 21, front large lid 8 arranges the first oil-air lubrication air inlet pipe 7, second oil-air lubrication air inlet pipe 46, 3rd oil-air lubrication air inlet pipe 9, 4th oil-air lubrication air inlet pipe 12 and the first oil-air lubrication escape pipe 41, lubrication oil gas enters from the first oil-air lubrication air inlet pipe 7, enter its raceway by aperture on the first front support bearing 6 outer ring to lubricate for the first front support bearing 6 provides radial, in like manner, lubrication oil gas enters from the second oil-air lubrication air inlet pipe 46, enter its raceway by aperture on the second front support bearing 13 outer ring to lubricate for the first front support bearing 13 provides radial, oil gas provides axial lubrication by the small-bore front outer ring spacer 10 from the 3rd oil-air lubrication air inlet pipe 9 in the raceway spraying into the first front support bearing 6 and the second front support bearing 13, oil gas provides axial lubrication from the small-bore the 4th oil-air lubrication air inlet pipe 12 outer ring spacer 17 in the raceway spraying into the 3rd front support bearing 16 and the 4th front support bearing 21, final from the first oil-air lubrication escape pipe 41 discharger.
Described rotating shaft 2 is provided with the first hydraulic oil injection orifice 1 and the second hydraulic oil injection orifice 42, add to be pressed in hole with hydraulic pump and inject hydraulic oil, and the outer ring of the first front support bearing 6 and the second front support bearing 13 is caught respectively with draw-off gear, when pressure is necessarily large, can be disassembled, change other bearing immediately and test.
The beneficial effect that the present invention has is:
Because the first front support bearing 6 and the second front support bearing 13 are connected into one group, 3rd front support bearing 16 and the 4th front support bearing 21 are connected into another group, the design of two groups of back-to-back configurations again, the stability of electric main shaft device axial displacement and raising electro spindle can be controlled, so electric main shaft device has the advantage of high rigidity, Precision Machining can be carried out.
Because the accurate single row roller bearing of the mixing devising band taper hole is as rear support, its taper hole arranged can regulate the pretightning force of main shaft and adapt to Axial Thermal displacement, so electric main shaft device has larger axial rigidity, to axial stability, there is useful regulating and controlling effect.
Use lubrication oil gas as lubricant medium, the lubricating oil of accurate quantification is directly injected into each bearing by compressed air, the lubricating oil of these trace can make bearing work under minimum friction, compared with other lubricating systems, there is more low-temperature-rise or higher rotating speed, so electric main shaft device has high-revolving advantage at operating mode lower bearing of the same race.
Devise the injection mode of radial lubrication and axial lubrication two kinds lubrication oil gas, the small oil gas drop of accurate quantification can respectively from radial direction, axial injection test bearing, by regulating different injection mode and oil mass, observe electric main shaft device operational effect, best oil gas injection mode when can run test bearing and injection rate carry out correlative study.
Because rotating shaft 2 is provided with the first hydraulic oil injection orifice 1 and the first hydraulic oil injection orifice 42, after taking off dust cap 3, front nut 4 and front tegillum 5, add to be pressed in hole by hydraulic pump and inject hydraulic oil, and apply the outer ring that draw-off gear catches the first front support bearing 6 and the second front support bearing 13 respectively, when pressure is necessarily large, first front support bearing 6 and the second front support bearing 13 can be disassembled, so electric main shaft device has the advantage being convenient for changing test bearing.
Apparatus of the present invention meet the actual working environment of to carry out rolling bearing in high-speed electric main shaft device required for the dynamic property study on monitoring such as longtime running stability, the structure support good rigidity adopted, accurate quantification lubricate and conveniently change test bearing, can ensure the precision stability of electro spindle longtime running, the stable support effect of auxiliary bearing also ensure that to have higher confidence level to the measurement data of the dynamic property of test bearing.
Accompanying drawing explanation
Fig. 1 is inlet channel direction of the present invention vertical section structure schematic diagram.
Fig. 2 is intake tunnel right view of the present invention.
Fig. 3 is inlet channel left view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in detail.
With reference to Fig. 1, Fig. 2 and Fig. 3, use the high-speed electric main shaft experimental provision that angular contact ball and cylinder roller bearing support, comprise housing 26, housing 26 is as motor base, cooling jacket 25 interference fit is in housing 26, motor stator 24 interference fit is installed in cooling jacket 25, and rotor 23 and gimbal 22 interference fit are installed in rotating shaft 2, and rotor 23 is corresponding with motor stator 24, the rear end of rotating shaft 2 is provided with single row roller bearing 31, the front side of single row roller bearing 31 to contact with the ladder place of rotor 2 respectively by rear cone spacer 28 and positions, rear outer ring spacer 27 contacts with bearing block 32 and positions, rear outer ring spacer 27, single row roller bearing 31 is placed in rear bearing block 32, rear bearing block 32 is arranged in rear rolling bushing 30, rear bearing block 32 termination is connected with rear spring baffle plate 33 bolt, rear side and the rear spring baffle plate 33 of single row roller bearing 31 connect, to its location pretension on rear side of the inner ring that back nut 34 withstands single row roller bearing 31, rear large lid 29 and rolling bushing 30, rear bearing block 32 matched in clearance, the front end of rear large lid 29 and housing 26, cooling jacket 25 bolt-connection, rear large lid 29 rear ends are connected with rear tegillum 35 bolt, and rear large lid 29 arranges the 5th oil-air lubrication air inlet pipe 36 and the second oil-air lubrication escape pipe 48, the front end of rotating shaft 2 is provided with the first front support bearing 6, second front support bearing 13, 3rd front support bearing 16 and the 4th front support bearing 21, first front support bearing 6 and the second front support bearing 13 are connected into one group, 3rd front support bearing 16 and the 4th front support bearing 21 are connected into another group, two groups of back-to-back configurations again, gap between two groups shaft shoulder cover 15 supplements, and separate with front spring baffle plate 14, their inner ring and outer ring separate by the first front support bearing 6 and the second front support bearing 13 front cone spacer 11 and front outer ring spacer 10, their inner ring and outer ring separate by the 3rd front support bearing 16 and the 4th front support bearing 21 cone spacer 18 and outer ring spacer 17, 3rd front support bearing 16 and the 4th front support bearing 21 are fixed in bearing block 19, bearing block 19 is installed in rolling bushing 20, and bearing block 19, before rolling bushing 20 is bolted in large lid 8 rear portions, first front support bearing 6, second front support bearing 13 and front large lid 8 forward gap coordinate, the rear end of front large lid 8 is connected with housing 26, the front end of front large lid 8 is connected with front nut 4 bolt of front tegillum 5, front tegillum 5 is connected with dust cap 3 bolt, the front end of rotating shaft 2 is provided with the first hydraulic oil injection orifice 1 and the second hydraulic oil injection orifice 42, front large lid 8 arranges the first oil-air lubrication air inlet pipe 7, second oil-air lubrication air inlet pipe 46, 3rd oil-air lubrication air inlet pipe 9, 4th oil-air lubrication air inlet pipe 12 and the first oil-air lubrication escape pipe 41, lubrication oil gas enters from the first oil-air lubrication air inlet pipe 7, enter its raceway by aperture on the first front support bearing 6 outer ring to lubricate for the first front support bearing 6 provides radial, in like manner, lubrication oil gas enters from the second oil-air lubrication air inlet pipe 46, enter its raceway by aperture on the second front support bearing 13 outer ring to lubricate for the first front support bearing 13 provides radial, oil gas provides axial lubrication by the small-bore front outer ring spacer 10 from the 3rd oil-air lubrication air inlet pipe 9 in the raceway spraying into the first front support bearing 6 and the second front support bearing 13, oil gas provides axial lubrication from the small-bore the 4th oil-air lubrication air inlet pipe 12 outer ring spacer 17 in the raceway spraying into the 3rd front support bearing 16 and the 4th front support bearing 21, final from the first oil-air lubrication escape pipe 41 discharger.
The first described front support bearing 6, second front support bearing 13, the 3rd front support bearing 16, the 4th front support bearing 21 are hybrid ceramic ball rolling bearing, can improve electro spindle rigidity and stability, and the rolling element of ceramic material has very high tolerance to HTHP; First front support bearing 6 and the second front support bearing 13 are connected into one group, 3rd front support bearing 16 and the 4th front support bearing 21 are connected into another group, two groups of back-to-back configurations again, this mounting means is applicable to axial push-pull varying load, there is the remarkable advantage of high rigidity: on the one hand, high rigidity makes running accuracy improve, thus the machining accuracy of lathe improves; On the other hand, high rigidity reduces experimental error, also more accurate to the test of rolling bearing dynamic performance.
The first described front support bearing 6 and the second front support bearing 13 are test bearing, are the test bearing can carrying out dismounting; The 3rd described front support bearing 16 and the 4th front support bearing 21 are as supplemental support bearing, and its effect ensure that rotating shaft 2 has higher stiffness and running accuracy, so that guarantee can the dynamic property of Measurement accuracy test bearing; Described single row roller bearing 31 is as rear support bearing, the taper hole arranged can regulate the pretightning force of single row roller bearing 31 and adapt to Axial Thermal displacement, the thermal stretching produced when running up for device has compensating action, thus can meet the first front support bearing 6, second front support bearing 13, the 3rd front support bearing 16 and the high-revolving feature of the 4th front support bearing 21.
Described rotor 23 and rotating shaft 2 are made of one.
Described housing 26 is provided with water inlet 43, first discharge opening 44 and the second discharge opening 45, and the water of water cooling unit enters in cooling jacket 25 from the water inlet 43 housing 26, and axially flows out housing 26 along the first discharge opening 44 and the second discharge opening 45.
Described cooling jacket 25 adopts circular course, and every bar water channel can independent water-in and water-out, and cooling water flows betwixt, and takes away motor stator 24 and run the most of heat produced, and finally flows out from the water outlet of housing 26.
An O RunddichtringO 37, the 2nd O RunddichtringO 38, the 3rd O RunddichtringO 39 and the 4th O RunddichtringO 40 is provided with between described housing 26 and cooling jacket 25, lubricant medium and the space between water inflow rotor 23 and motor stator 24 can be stoped, achieve good sealing effectiveness.
For the bearing pre-tightened of satisfied different test experiments, the spring placing right quantity in the circular hole of described rear spring baffle plate 33 symmetric position carries out corresponding pretension.
Described rotating shaft 2 is provided with the first hydraulic oil injection orifice 1 and the second hydraulic oil injection orifice 42, add to be pressed in hole with hydraulic pump and inject hydraulic oil, and the outer ring of the first front support bearing 6 and the second front support bearing 13 is caught respectively with draw-off gear, when pressure is necessarily large, can be disassembled, change other bearing immediately and test.
Operation principle of the present invention is:
A kind of use ultraprecise angular contact ball and cylinder roller bearing high-speed electric main shaft device, for the high-revolving feature of satisfied actual main shaft bearing, Oil-air Lubrication is adopted to be that the first front support bearing 6, second front support bearing 13, the 3rd front support bearing 16, the 4th front support bearing 21 and single row roller bearing 31 lubricate, and take away its heat by pressure-air, play cooling effect; The main pyrotoxin rotating to be plant running of rotor 23 and motor stator 24, adopts cooling water mode to be that rotor 23 and motor stator 24 cool.
The feature high for the designed rolling bearing charge oil pressure run up and Inlet and outlet water flow is large, respectively sealing device is provided with in the both sides of rotating shaft 2 and outer face, motor stator 24 two ends, lubricant medium and water can be stoped to flow into the space between rotor 23 and motor stator 24 and axially flow out housing 26 along electro spindle, and sealing effectiveness is better.
The built-in motor selected is made up of rotor 23 and motor stator 24, transducer drive rotor 23 and motor stator 24 is used to realize frequency control, rotor 23 interference fit is installed in rotating shaft 2, thus rotating shaft 2 is followed rotor 23 and is rotated together, first front support bearing 6, second front support bearing 13, the 3rd front support bearing 16, the 4th front support bearing 21 and single row roller bearing 31 are installed on the front-end and back-end of rotating shaft 2 respectively, and supporting revolving shaft 2 also therewith rotates.
First front support bearing 6 and the second front support bearing 13 are the test bearing can carrying out dismounting, 3rd front support bearing 16 and the 4th front support bearing 21 are as supplemental support bearing, it ensures that rotating shaft 2 has higher stiffness and running accuracy, thus can Measurement accuracy preserve the dynamic performance data of the first front support bearing 6 and the second front support bearing 13, carry out subsequent treatment.
Rotating shaft 2 front end is provided with the first hydraulic oil injection orifice 1 and the first hydraulic oil injection orifice 42 further, after dust cap 3, front nut 4 and front tegillum 5 are taken off, application hydraulic pump adds to be pressed in hole and injects hydraulic oil, draw-off gear is adopted to catch the outer ring of the first front support bearing 6 and the second front support bearing 13 respectively, when pressure is necessarily large, first front support bearing 6 and the second front support bearing 13 can be disassembled, and other bearing replaceable is tested immediately.
Claims (4)
1. use the high-speed electric main shaft experimental provision that angular contact ball and cylinder roller bearing support, comprise housing (26), housing (26) is as motor base, cooling jacket (25) interference fit is in housing (26), motor stator (24) interference fit is installed in cooling jacket (25), rotor (23) interference fit is installed in rotating shaft (2), rotor (23) is corresponding with motor stator (24), it is characterized in that: the rear end of rotating shaft (2) is provided with the single row roller bearing (31) of band taper hole, can the pretightning force of adjusting device, adapt to radial support displacement and Axial Thermal displacement, the front end of rotating shaft (2) is provided with the first front support bearing (6), second front support bearing (13), 3rd front support bearing (16) and the 4th front support bearing (21), first front support bearing (6) and the second front support bearing (13) are connected into one group, 3rd front support bearing (16) and the 4th front support bearing (21) are connected into another group, two groups of back-to-back configurations again, gap between two groups shaft shoulder cover (15) supplements, and separate with front spring baffle plate (14), first front support bearing (6) and the second front support bearing (13) are test bearing, be the test bearing can carrying out dismounting, 3rd front support bearing (16) and the 4th front support bearing (21) are as supplemental support bearing.
2. the high-speed electric main shaft experimental provision of use angular contact ball according to claim 1 and cylinder roller bearings, is characterized in that: the first described front support bearing (6), the second front support bearing (13), the 3rd front support bearing (16) and the 4th front support bearing (21) adopt ultraprecise angular contact ball bearing.
3. the high-speed electric main shaft experimental provision of use angular contact ball according to claim 1 and cylinder roller bearings, it is characterized in that: the first described front support bearing (6), second front support bearing (13), Qian great Gai (8) is provided with outside 3rd front support bearing (16) and the 4th front support bearing (21), front large lid (8) arranges the first oil-air lubrication air inlet pipe (7), second oil-air lubrication air inlet pipe (46), 3rd oil-air lubrication air inlet pipe (9), 4th oil-air lubrication air inlet pipe (12) and the first oil-air lubrication escape pipe (41), lubrication oil gas enters from the first oil-air lubrication air inlet pipe (7), entering its raceway by aperture on the first front support bearing (6) outer ring is that the first front support bearing (6) provides radial lubrication, in like manner, lubrication oil gas enters from the second oil-air lubrication air inlet pipe (46), entering its raceway by aperture on the second front support bearing (13) outer ring is that the first front support bearing (13) provides radial lubrication, oil gas provides axial lubrication by the small-bore front outer ring spacer (10) from the 3rd oil-air lubrication air inlet pipe (9) in the raceway spraying into the first front support bearing (6) and the second front support bearing (13), oil gas provides axial lubrication from the small-bore the 4th oil-air lubrication air inlet pipe (12) outer ring spacer (17) in the raceway spraying into the 3rd front support bearing (16) and the 4th front support bearing (21), final from the first oil-air lubrication escape pipe (41) discharger.
4. the high-speed electric main shaft experimental provision of use angular contact ball according to claim 1 and cylinder roller bearings, it is characterized in that: described rotating shaft (2) is provided with the first hydraulic oil injection orifice (1) and the second hydraulic oil injection orifice (42), add to be pressed in hole with hydraulic pump and inject hydraulic oil, and the outer ring of the first front support bearing (6) and the second front support bearing (13) is caught respectively with draw-off gear, when pressure is necessarily large, can be disassembled, change other bearing immediately and test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028787.3A CN105458306B (en) | 2015-12-31 | 2015-12-31 | Use ultraprecise angular contact ball and the high-speed electric main shaft device of cylinder roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028787.3A CN105458306B (en) | 2015-12-31 | 2015-12-31 | Use ultraprecise angular contact ball and the high-speed electric main shaft device of cylinder roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105458306A true CN105458306A (en) | 2016-04-06 |
| CN105458306B CN105458306B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511028787.3A Expired - Fee Related CN105458306B (en) | 2015-12-31 | 2015-12-31 | Use ultraprecise angular contact ball and the high-speed electric main shaft device of cylinder roller bearing |
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| CN (1) | CN105458306B (en) |
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| CN105958863A (en) * | 2016-06-27 | 2016-09-21 | 哈尔滨工业大学 | Ultrasonic motor with high rotation accuracy structure and stator and rotor pre-tightening method |
| 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 |
| CN109848445A (en) * | 2019-04-01 | 2019-06-07 | 湖南广播电视大学 | A kind of lathe main axis device |
| 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 |
| CN112059212A (en) * | 2020-08-06 | 2020-12-11 | 珠海格力电器股份有限公司 | Spindle front end structure and electric spindle |
| CN115194498A (en) * | 2022-08-17 | 2022-10-18 | 超同步股份有限公司 | Electric spindle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105958863A (en) * | 2016-06-27 | 2016-09-21 | 哈尔滨工业大学 | Ultrasonic motor with high rotation accuracy structure and stator and rotor pre-tightening method |
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| CN109848445A (en) * | 2019-04-01 | 2019-06-07 | 湖南广播电视大学 | A kind of lathe main axis device |
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| CN112059212A (en) * | 2020-08-06 | 2020-12-11 | 珠海格力电器股份有限公司 | Spindle front end structure and electric spindle |
| CN115194498A (en) * | 2022-08-17 | 2022-10-18 | 超同步股份有限公司 | Electric spindle |
| CN115194498B (en) * | 2022-08-17 | 2023-08-11 | 超同步股份有限公司 | Electric spindle |
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| CN105458306B (en) | 2018-03-16 |
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