CN106425635B - Electro spindle based on hydrodynamic sliding bearing - Google Patents
Electro spindle based on hydrodynamic sliding bearing Download PDFInfo
- Publication number
- CN106425635B CN106425635B CN201611175667.0A CN201611175667A CN106425635B CN 106425635 B CN106425635 B CN 106425635B CN 201611175667 A CN201611175667 A CN 201611175667A CN 106425635 B CN106425635 B CN 106425635B
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- China
- Prior art keywords
- sliding bearing
- electro spindle
- hydrodynamic sliding
- main shaft
- bearing
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Classifications
-
- 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
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/043—Accessories for spindle drives
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
- H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Turning (AREA)
Abstract
The invention discloses a kind of electro spindle based on hydrodynamic sliding bearing, including electro spindle shell, main shaft, motor, lubrication and cooling system, the front portion of main shaft and rear end are separately installed with preceding Hydrodynamic Sliding Bearing and rear Hydrodynamic Sliding Bearing, motor rotor is fixedly connected with main shaft and drives main shaft to rotate, lubrication and cooling system include front nozzle, rear nozzle and coolant jacket, front nozzle connects with preceding Hydrodynamic Sliding Bearing and runs through electro spindle shell, rear nozzle connects with rear Hydrodynamic Sliding Bearing and runs through electro spindle shell, coolant jacket is provided with cooling oil passage and the cooling oil-in connected with cooling oil passage and cooling-oil outlet.The present invention casts aside traditional electric spindle design theory based on rolling bearing, propose a kind of electro spindle based on hydrodynamic sliding bearing, the present invention can bear bigger rotating speed, so as to effectively improve service life, bigger load can also be born, there is the characteristics of load capacity is high, precision is high, compact-sized, long lifespan.
Description
Technical field
The present invention relates to a kind of electro spindle based on hydrodynamic sliding bearing, belong to numerical control machine tool technique field.
Background technology
Electro spindle is a kind of integral unit that high-speed electric expreess locomotive is built in main shaft.The rotor of motor drives main shaft to revolve together
Turn, realize electromechanical integration.It is this to cancel the common mechanical device such as V belt translation and gear drive, realize lathe " Zero-drive Chain "
The gear unit of structure is using more and more extensive in modern machine design, and its is compact-sized, rotating speed is high, quality is small, start and stop are fast
The characteristics of speed, stable operating, makes the preferred structure of high-speed main spindle.And traditional electro spindle is based primarily upon rolling bearing
Design concept, limits the further raising of its rotating speed, and bearing capacity is also limited.
The content of the invention
The technical problems to be solved by the invention are：Overcome the deficiencies in the prior art, there is provided a kind of load capacity is high, precision
High, compact-sized, long lifespan the electro spindle based on hydrodynamic sliding bearing.
In order to solve the above-mentioned technical problem, the technical scheme is that：A kind of electro spindle based on hydrodynamic sliding bearing,
Including electro spindle shell, main shaft, motor, lubrication and cooling system, the front portion of main shaft and rear end are separately installed with preceding liquid and moved
Press sliding bearing and rear Hydrodynamic Sliding Bearing, forward and backward Hydrodynamic Sliding Bearing with electro spindle shell, outside electro spindle
The bearing (ball) cover at shell both ends collectively forms overall annular seal space, and motor is arranged on preceding Hydrodynamic Sliding Bearing and rear liquid moves
Between pressing sliding bearing, the motor rotor is fixedly connected with main shaft and drives main shaft to rotate, and the motor stator is located at
On the outside of motor rotor, lubrication and cooling system include front nozzle, rear nozzle and coolant jacket, and front nozzle slides with preceding Hydrodynamic
Bearing connects and runs through electro spindle shell, and rear nozzle connects with rear Hydrodynamic Sliding Bearing and runs through electro spindle shell, described
Cooling is set between motor stator and electro spindle shell, and coolant jacket is provided with cooling oil passage and connected with cooling oil passage
Logical cooling oil-in and cooling-oil outlet, cool down oil-in and cooling-oil outlet runs through electro spindle shell.
Further for axially supporting is provided, the rear and front end of the main shaft respectively sets an angular contact ball bearing, is respectively
Preceding angular contact ball bearing and rear angular contact ball bearing, forward and backward angular contact ball bearing are located at forward and backward Hydrodynamic in above-mentioned annular seal space
The outside of sliding bearing, to provide axially supporting, prevent the axial movement of electro spindle.
Further, the angular contact ball bearing is the ceramic angular contact ball bearing that contact angle is 25 °.
Positioning is provided further for motor, the both sides of the main shaft upper motor are also equipped with spacer and collar,
Spacer is used for the positioning of motor stator, and collar is used for the positioning of rotor.
Further, the inside of the main shaft is provided with disk spring formula pine tool-broaching mechanism, bears moment of torsion during for being driven.
Further, the bearing shell of the main shaft is made of axle casting aluminum-bronze material, to obtain enough tensile strength and punching
Hit toughness.
Further for smaller profile, higher efficiency is obtained, the motor uses autosynchronous motor.
Above-mentioned technical proposal is employed, the present invention casts aside traditional electric spindle design theory based on rolling bearing, uses
Architectural schemes based on hydrodynamic sliding bearing, it is proposed that a kind of electro spindle based on hydrodynamic sliding bearing, relative to rolling bearing
Electro spindle, the electro spindle of the invention based on hydrodynamic sliding bearing can bear bigger rotating speed, make so as to effectively improve
With the life-span, while bigger load can also be born, there is the characteristics of load capacity is high, precision is high, compact-sized, long lifespan；This
Invention has rational lubrication and cooling system, and a good working environment is provided for the work of electro spindle, can more great Cheng
The reduction cost of degree, create bigger profit；The present invention adds a pair of angular contact multiple-ceramic ball bearings to carry at main shaft both ends
For axial supporting, so that electro spindle can not only bear radial load, moreover it is possible to axial load is born, so as to bear more
High rotating speed, it is greatly enhanced the service life of electro spindle.
Brief description of the drawings
Fig. 1 is the front sectional view of the electro spindle based on hydrodynamic sliding bearing of the present invention；
Fig. 2 is the installation diagram of the electro spindle based on hydrodynamic sliding bearing of the present invention；
Fig. 3 is the structural representation of the main shaft of the present invention；
In figure, 1, main shaft, 2, lock-screw, 3, bearing (ball) cover, 4, lock-screw, 5, preceding angular contact ball bearing, 6, preceding liquid
Body hydrodynamic sliding bearing, 7, front nozzle, 8, spacer, 9, collar, 10, cooling oil-in, 11, electro spindle shell, 12, coolant jacket,
13rd, motor stator, 14, motor rotor, 15, cooling-oil outlet, 16, rear nozzle, 17, rear Hydrodynamic Sliding Bearing, 18,
Rear angular contact ball bearing.
Embodiment
In order that present disclosure is easier to be clearly understood, it is right below according to specific embodiment and with reference to accompanying drawing
The present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of electro spindle based on hydrodynamic sliding bearing, including electro spindle shell 11, main shaft
1st, motor, lubrication and cooling system, the front portion of main shaft 1 and rear end are separately installed with preceding Hydrodynamic Sliding Bearing 6 and rear liquid
Body hydrodynamic sliding bearing 17, forward and backward Hydrodynamic Sliding Bearing and electro spindle shell 11, the axle positioned at the both ends of electro spindle shell 11
Socket end lid 3 collectively forms overall annular seal space, and motor is arranged on preceding Hydrodynamic Sliding Bearing 6 and rear Hydrodynamic sliding axle
Between holding 17, the motor rotor 14 is fixedly connected with main shaft 1 and drives main shaft 1 to rotate, and the motor stator 13 is located at
The outside of motor rotor 14, lubrication and cooling system include front nozzle 7, rear nozzle 16 and coolant jacket 12, front nozzle 7 and preceding liquid
Hydrodynamic sliding bearing 6 is connected and runs through electro spindle shell 11, and rear nozzle 16 is connected and run through with rear Hydrodynamic Sliding Bearing 17
Electro spindle shell 11, the coolant jacket 12 are arranged between motor stator 13 and electro spindle shell 11, and coolant jacket 12 is provided with
Cooling oil passage and the cooling oil-in 10 connected with cooling oil passage and cooling-oil outlet 15, cool down oil-in 10 and cooling oil
Outlet 15 runs through electro spindle shell 11.
Further, as shown in figure 1, bearing (ball) cover 3 is fixed on electro spindle shell 11 by trip bolt 4, bearing (ball) cover 3
To whole one positioning fixation of electric chief axis system, and provide the effect of sealing；Angular contact ball bearing 5 before the end of main shaft 1
With cushion block is further fixed at rear angular contact ball bearing 18, and cushion block is fixed by lock-screw 2, cushion block gives preceding angular contact ball axle
Hold the effect of 5 and 18 1 positioning of rear angular contact ball bearing.
Preferably, as shown in figure 1, the rear and front end of the main shaft 1 respectively sets an angular contact ball bearing, corner connection before being respectively
Ball bearing 5 and rear angular contact ball bearing 18 are touched, forward and backward angular contact ball bearing is located at forward and backward Hydrodynamic in above-mentioned annular seal space and slided
The outside of dynamic bearing, to provide axially supporting, prevent the axial movement of electro spindle.
Further, the angular contact ball bearing is the ceramic angular contact ball bearing that contact angle is 25 °.
Preferably, as shown in figure 1, the both sides of the upper motor of the main shaft 1 are also equipped with spacer 8 and collar 9, spacer 8 is used
In the positioning of motor stator 13, collar 9 is used for the positioning of rotor 14.
Alternatively, as shown in Figure 1, Figure 3, the main shaft 1 is hollow shaft, and the inside of main shaft 1 is provided with disk spring formula pine
Tool-broaching mechanism, moment of torsion is born during for being driven.
Preferably, the bearing shell of the main shaft 1 is made of axle casting aluminum-bronze material, to obtain enough tensile strength and punching
Hit toughness.
Alternatively, the motor uses autosynchronous motor.
The present invention casts aside traditional electric spindle design theory based on rolling bearing, using the frame based on hydrodynamic sliding bearing
Structure scheme, it is proposed that a kind of electro spindle based on hydrodynamic sliding bearing, according to electric spindle design requirement and general principle from structure
On each several part part of high-speed electric main shaft is designed, calculated and checked to determine relevant parameter；Relative to rolling bearing
Electro spindle, the electro spindle of the invention based on hydrodynamic sliding bearing can bear bigger rotating speed, be used so as to effectively improve
Life-span, while bigger load can also be born, there is the characteristics of load capacity is high, precision is high, compact-sized, long lifespan；This hair
It is bright that there is rational lubrication and cooling system, a good working environment is provided for the work of electro spindle, can be more
Reduction cost, create bigger profit；The present invention adds a pair of angular contact multiple-ceramic ball bearings to provide at main shaft both ends
Axially supporting, so that electro spindle can not only bear radial load, moreover it is possible to axial load is born, it is higher so as to bear
Rotating speed, be greatly enhanced the service life of electro spindle.
Particular embodiments described above, pair present invention solves the technical problem that, technical scheme and beneficial effect carry out
It is further described, should be understood that the specific embodiment that the foregoing is only the present invention, is not limited to this
Invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., should be included in this hair
Within bright protection domain.
Claims (7)
- A kind of 1. electro spindle based on hydrodynamic sliding bearing, it is characterised in that：Including electro spindle shell (11), main shaft (1), electronic Machine, lubrication and cooling system, the front portion of main shaft (1) and rear end are separately installed with preceding Hydrodynamic Sliding Bearing (6) and rear liquid Hydrodynamic sliding bearing (17), forward and backward Hydrodynamic Sliding Bearing and electro spindle shell (11), positioned at electro spindle shell (11) both ends Bearing (ball) cover (3) collectively form overall annular seal space, motor is arranged on preceding Hydrodynamic Sliding Bearing (6) and rear liquid moves Between pressing sliding bearing (17), the motor rotor (14) is fixedly connected with main shaft (1) and drives main shaft (1) to rotate, described Motor stator (13) is located on the outside of motor rotor (14), lubrication and cooling system include front nozzle (7), rear nozzle (16) and Coolant jacket (12), front nozzle (7) connect with preceding Hydrodynamic Sliding Bearing (6) and run through electro spindle shell (11), rear nozzle (16) connected with rear Hydrodynamic Sliding Bearing (17) and run through electro spindle shell (11), the coolant jacket (12) is arranged on electronic Between machine stator (13) and electro spindle shell (11), coolant jacket (12) is provided with cooling oil passage and connected with cooling oil passage Oil-in (10) and cooling-oil outlet (15) are cooled down, oil-in (10) is cooled down and cooling-oil outlet (15) runs through electro spindle shell (11)。
- 2. the electro spindle according to claim 1 based on hydrodynamic sliding bearing, it is characterised in that：Before the main shaft (1) Both ends respectively set an angular contact ball bearing afterwards, and angular contact ball bearing (5) and rear angular contact ball bearing (18), forward and backward before being respectively Angular contact ball bearing is located at the outside of forward and backward Hydrodynamic Sliding Bearing in above-mentioned annular seal space, to provide axially supporting, prevents electricity The axial movement of main shaft.
- 3. the electro spindle according to claim 2 based on hydrodynamic sliding bearing, it is characterised in that：The angular contact ball bearing The ceramic angular contact ball bearing for being 25 ° for contact angle.
- 4. the electro spindle based on hydrodynamic sliding bearing according to any one of claims 1 to 3, it is characterised in that：The master The both sides of axle (1) upper motor are also equipped with spacer (8) and collar (9), and spacer (8) is used for the positioning of motor stator (13), axle Ring (9) is used for the positioning of rotor (14).
- 5. the electro spindle based on hydrodynamic sliding bearing according to any one of claims 1 to 3, it is characterised in that：The master Axle (1) is hollow shaft, and the inside of main shaft (1) is provided with disk spring formula pine tool-broaching mechanism, bears moment of torsion during for being driven.
- 6. the electro spindle based on hydrodynamic sliding bearing according to any one of claims 1 to 3, it is characterised in that：The master The bearing shell of axle (1) is made of axle casting aluminum-bronze material, to obtain enough tensile strength and impact toughness.
- 7. the electro spindle based on hydrodynamic sliding bearing according to any one of claims 1 to 3, it is characterised in that：The electricity Motivation uses autosynchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611175667.0A CN106425635B (en) | 2016-12-15 | 2016-12-15 | Electro spindle based on hydrodynamic sliding bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611175667.0A CN106425635B (en) | 2016-12-15 | 2016-12-15 | Electro spindle based on hydrodynamic sliding bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106425635A CN106425635A (en) | 2017-02-22 |
| CN106425635B true CN106425635B (en) | 2018-04-06 |
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ID=58217468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611175667.0A Active CN106425635B (en) | 2016-12-15 | 2016-12-15 | Electro spindle based on hydrodynamic sliding bearing |
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| CN (1) | CN106425635B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107276317A (en) * | 2017-06-16 | 2017-10-20 | 余雷 | A kind of internal rotor water-cooled machine |
| CN107994709B (en) * | 2018-01-17 | 2024-06-11 | 明程电机技术（深圳）有限公司 | Motor rotating shaft and evaporative cooling shaft type oil-cooled motor |
| CN108942656B (en) * | 2018-07-25 | 2024-06-25 | 珠海桑贝思精密科技有限公司 | High-efficient waterproof performance's rotation equipment and polisher |
| CN109238697B (en) * | 2018-08-16 | 2020-10-16 | 东南大学 | Rotor supporting system for testing performance of high-speed water lubrication dynamic pressure bearing |
| CN109865848A (en) * | 2019-03-27 | 2019-06-11 | 宁波天控五轴数控技术有限公司 | A kind of electro spindle |
| CN111804936A (en) * | 2019-04-10 | 2020-10-23 | 宁波天控五轴数控技术有限公司 | Dual-cooling electric spindle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004009180A (en) * | 2002-06-05 | 2004-01-15 | Koyo Seiko Co Ltd | Built-in motor main spindle |
| CN2719455Y (en) * | 2004-09-03 | 2005-08-24 | 湖南同心科技有限公司 | High-speed electric main spindle of hydrostatic-hydrodynamic bearing |
| CN2765372Y (en) * | 2004-12-08 | 2006-03-15 | 湖南同心科技有限公司 | Dynamic/static pressure bearing electric main shaft |
| CN204234967U (en) * | 2014-10-09 | 2015-04-01 | 安阳工学院 | A kind of friction stir welding dynamic/static piezoelectric main shaft |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206305855U (en) * | 2016-12-15 | 2017-07-07 | 常州机电职业技术学院 | Electro spindle based on hydrodynamic sliding bearing |
-
2016
- 2016-12-15 CN CN201611175667.0A patent/CN106425635B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004009180A (en) * | 2002-06-05 | 2004-01-15 | Koyo Seiko Co Ltd | Built-in motor main spindle |
| CN2719455Y (en) * | 2004-09-03 | 2005-08-24 | 湖南同心科技有限公司 | High-speed electric main spindle of hydrostatic-hydrodynamic bearing |
| CN2765372Y (en) * | 2004-12-08 | 2006-03-15 | 湖南同心科技有限公司 | Dynamic/static pressure bearing electric main shaft |
| CN204234967U (en) * | 2014-10-09 | 2015-04-01 | 安阳工学院 | A kind of friction stir welding dynamic/static piezoelectric main shaft |
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| CN106425635A (en) | 2017-02-22 |
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