CN109128224A - High speed water-lubricated dynamic spiral grooved bearing electro spindle - Google Patents
High speed water-lubricated dynamic spiral grooved bearing electro spindle Download PDFInfo
- Publication number
- CN109128224A CN109128224A CN201810927290.2A CN201810927290A CN109128224A CN 109128224 A CN109128224 A CN 109128224A CN 201810927290 A CN201810927290 A CN 201810927290A CN 109128224 A CN109128224 A CN 109128224A
- Authority
- CN
- China
- Prior art keywords
- bearing
- thrust
- shell
- transverse bearing
- gas injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- 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
-
- 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
-
- 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
- B23Q11/126—Arrangements for cooling or lubricating parts of the machine for cooling only
- B23Q11/127—Arrangements for cooling or lubricating parts of the machine for cooling only for cooling motors or spindles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses a kind of high speed water-lubricated dynamic spiral grooved bearing electro spindles, comprising: axle journal, transverse bearing bearing shell, thrust button, thrust bearing bearing shell, main shaft, gas injection sealing ring, motor stator, rotor, cooling jacket, shell, peripheral equipment.Radial (thrust) bearing is used as lubricant using water, and helicla flute, the area the Bing Tai processing micro- texture of drag reduction are carved on axle journal and thrust button；Radial (thrust) bearing bush is made of special carbon graphite, prepares Ta-Si base nano-composite coating on axle journal (thrust button) surface；Main shaft radial, thrust bearing mixing bearing using dynamic pressure helicla flute, devises dedicated non-contact gas injection sealing ring in bearing end, and main shaft is driven by rare earth permanent magnet brushless direct current motor, and motor stator is cooling by cooling jacket；The invention have bearing temperature rise is low, friction power loss is small, rotating accuracy is high, stability is good, cavitation resistance is strong and free of contamination advantage, particularly suitable for high-speed & precise progressive die lathe.
Description
Technical field
The invention patent relates to a kind of high speed water-lubricated dynamic spiral grooved bearing electro spindles, belong to high-speed processing machine tool neck
Domain.
Background technique
Compared with traditional rolling bearing electro spindle and oil-lubricated bearing electro spindle, water lubrication hydrostatic bearing electro spindle has
Rotating accuracy is high, fretting wear is small, temperature rise is low, revolving speed is high, the service life is long, the outstanding advantages such as pollution-free, in recent years, such electro spindle
Have become one of the research hotspot of high-speed processing machine tool industry.It is to be appreciated that water lubrication hydrostatic bearing is to rely on to externally supply to be
System conveying high-pressure water, and the intracavitary pressure of static pressure is regulated and controled by flow controller, hydrostatic lubrication film is formed to bear external load.Also
It is to say, water lubrication hydrostatic bearing electro spindle, it is necessary to be equipped with a set of high service device.However, current China high service system
Still cannot be self-supporting, imported product price is high, and the attachment cost for resulting in water lubrication hydrostatic bearing electro spindle is excessively high, seriously constrains
Engineer application of such product in machine tool field.
Water-lubricated dynamic bearing rotates by main shaft and generates dynamic pressure effect carrying, without peripheral high service device.Water profit
It is simple, low in cost to slide last item bearing structure, therefore, researches and develops water-lubricated dynamic bearing electric chief axis, the cost of product is greatly reduced,
Engineer application is moved towards for such electro spindle to provide safeguard.
However, water-lubricated dynamic bearing is often difficult to form dynamic pressure moisture film in electro spindle initial start stage, there is abrasion in bearing
Security risk.Common cylinder water-lubricated dynamic bearing at present has in fields such as water pump, ships and widely applies, but such
Common cylinder submerged bearing is mostly rubber material, and rotating accuracy is lower, is not suitable for High-speed Electrical Spindle；Meanwhile common circle
Column hydrodynamic bearing will appear serious unstable phenomenon under small eccentricity rate.Water lubrication dielectric viscosity is low, pollution-free, in high-speed working condition
There is down stronger tarnish resistance and cavitation corrosion, so as to shorten the service life of bearing.
Therefore, invention high speed water lubrication hydrodynamic bearing then invents a kind of high speed water lubrication hydrodynamic bearing electro spindle, to pushing away
The scientific and technological progress of dynamic high-speed processing machine tool main shaft is significant.
Summary of the invention
Technical problem: for water lubriucated bearing electro spindle, the present invention provides a kind of high speed water profits
Sliding pressure spiral grooved bearing electro spindle, it is intended to reduce bearing cost, reduce film forming revolving speed, extend working life, improve dynamic
Energy.
Technical solution: a kind of high speed water-lubricated dynamic spiral grooved bearing electro spindle of the invention includes shell, is arranged in institute
It states the intracorporal dynamic pressure grooved liquid lubricated journal bearing of shell, the main shaft being arranged in the dynamic pressure grooved liquid lubricated journal bearing, be arranged described
The dynamic pressure Spiral Groove Thrust Bearing of front-end of spindle, the rotor that the main shaft end is arranged in and motor stator are mounted on institute
It states the cooling jacket outside motor stator, be arranged in dynamic pressure Spiral Groove Thrust Bearing front end and dynamic pressure grooved liquid lubricated journal bearing rear end
Contactless preceding gas injection sealing ring, rear gas injection sealing ring, main shaft stopped using dynamic pressure grooved liquid lubricated journal bearing and dynamic pressure helicla flute
Thrust bearing joint bearing, is driven by the rare earth permanent magnet brushless direct current motor that motor stator, rotor form.Peripheral equipment includes
Frequency converter, air supply system and cooling water system.
Wherein,
The dynamic pressure grooved liquid lubricated journal bearing includes preceding transverse bearing and rear transverse bearing, and preceding transverse bearing includes preceding radial direction
Bearing journal and preceding transverse bearing bearing shell, rear transverse bearing include rear transverse bearing axle journal and rear transverse bearing bearing shell；Preceding radial direction
Bearing journal and rear transverse bearing axle journal are in the middle part of main shaft, and preceding transverse bearing bearing shell and rear transverse bearing bearing shell are fixedly mounted
In in shell.
The dynamic pressure Spiral Groove Thrust Bearing includes preceding thrust bearing and rear thrust bearing, and preceding thrust bearing includes preceding thrust
Watt and thrust button, rear thrust bearing include rear thrust shoe and thrust button；Thrust button interference is installed on front-end of spindle, preceding thrust shoe by
Preceding gas injection sealing ring holds out against fixation, and rear thrust shoe is mounted in shell, and preceding thrust shoe and rear thrust shoe are by thrust bearing baffle ring phase
It separates.
It is carved with biserial herringbone spiral groove on the preceding transverse bearing axle journal and rear transverse bearing axle journal, before thrust button
Also be carved with helicla flute in rear surface, the front and rear surfaces of preceding transverse bearing axle journal, rear transverse bearing axle journal and thrust button include platform area,
The area He Ba of slot area, while platform area is also machined with the micro- texture of drag reduction.
The preceding transverse bearing bearing shell, rear transverse bearing bearing shell, preceding thrust shoe and rear thrust shoe are all by self-lubricating material
Special carbon graphite is made, and has extremely low friction and wear characteristic.
In the front and rear surfaces of the preceding transverse bearing axle journal, rear transverse bearing axle journal and thrust button, using twin cathode gold
Category-nonmetallic plasma sputter deposition technology prepares Ta-Si base nano-composite coating, to improve the anti-cavitation corrosion of bearing.
The rotor, which is positioned by the conical surface and passes through locking nut, is anchored on main shaft end, motor stator interference fit peace
Loaded on the inside of cooling jacket, interference fit is installed in back casing on the outside of cooling jacket, and rotor and motor stator are in axial direction
It is corresponding.
Shell inlet channel and shell water outlet are provided in the shell, on forward and backward dynamic pressure grooved liquid lubricated journal bearing bearing shell
It is respectively arranged with the preceding transverse bearing inlet channel and rear transverse bearing inlet channel communicated with shell inlet channel；Preceding transverse bearing water inlet
The left O-ring seals of transverse bearing and the right O-ring seals of preceding transverse bearing before road two sides are provided with, preceding transverse bearing bearing shell inside are set
It is equipped with the preceding transverse bearing bearing shell catch basin communicated with preceding transverse bearing inlet channel；After transverse bearing inlet channel two sides are provided with afterwards
The left O-ring seals of transverse bearing and the right O-ring seals of rear transverse bearing, rear transverse bearing bearing shell inside are provided with and rear radial axle
Hold the rear transverse bearing bearing shell catch basin that inlet channel communicates；Front end, rear dynamic pressure helicla flute in preceding dynamic pressure grooved liquid lubricated journal bearing
It is respectively arranged with preceding return flume, intermediate return flume between the rear end of transverse bearing, front and back dynamic pressure grooved liquid lubricated journal bearing and rear returns
Sink, preceding return flume and rear return flume pass through rear thrust shoe inlet channel and rear gas injection sealing ring water outlet and shell water outlet respectively
It communicates.
It is provided with shell inlet channel and shell water outlet in the shell, is provided on forward and backward transverse bearing bearing shell and shell
The preceding transverse bearing inlet channel and rear transverse bearing inlet channel that body inlet channel communicates；Before preceding transverse bearing inlet channel two sides are provided with
The left O-ring seals of transverse bearing and the right O-ring seals of preceding transverse bearing, preceding transverse bearing bearing shell inside are provided with and preceding radial axle
Hold the preceding transverse bearing catch basin that inlet channel communicates；Transverse bearing inlet channel two sides are provided with the left O shape sealing of rear transverse bearing afterwards
Circle and the right O-ring seals of rear transverse bearing are provided on the inside of rear transverse bearing bearing shell after communicating with rear transverse bearing inlet channel
Transverse bearing catch basin；It is respectively arranged between the front end of preceding transverse bearing, the rear end of rear transverse bearing, front and back transverse bearing
Preceding effluent trough, intermediate effluent trough and rear effluent trough, preceding effluent trough and rear effluent trough pass through rear thrust shoe water outlet and rear note respectively
Airtight seal ring water outlet is communicated with shell water outlet.
The thrust bearing baffle ring inlet channel communicated with shell inlet channel is provided on the thrust bearing baffle ring, in preceding thrust
Gas injection sealing ring effluent trough before being provided in the preceding gas injection sealing ring of bearing front end, and the preceding gas injection sealing ring water outlet of process,
Preceding thrust shoe water outlet, then communicates with shell water outlet.
Lubricant medium water enters shell inlet channel by water inlet, then flows separately through preceding transverse bearing inlet channel, rear diameter
To bearing inlet channel, rear thrust shoe inlet channel, thrust bearing baffle ring inlet channel, it is flowed into dynamic pressure grooved liquid lubricated journal bearing and dynamic pressure
It is rear to flow through preceding effluent trough, intermediate effluent trough, rear effluent trough and the water outlet of preceding gas injection sealing ring again in the gap of Spiral Groove Thrust Bearing
Slot flow back into shell return water road, flows out electro spindle from water outlet, then recycles again.
Shell air intake duct is provided in the shell, gas injection sealing ring air intake duct, preceding before being provided in preceding gas injection sealing ring
Gas injection sealing ring air intake duct is communicated with preceding gas injection sealing ring pneumatic trough, and rear gas injection sealing ring air inlet is provided in rear gas injection sealing ring
Road, rear gas injection sealing ring air intake duct are communicated with rear gas injection sealing ring pneumatic trough.
Compressed air is entered by preceding gas injection sealing ring air inlet, rear gas injection sealing ring air inlet, via preceding gas injection sealing ring
Air intake duct, shell air intake duct and rear gas injection sealing ring air intake duct flow into preceding gas injection sealing ring pneumatic trough and rear gas injection sealing ring gas collection
Slot, to prevent lubricant medium water from flowing into motor or outflow shell.
The helicla flute includes being in the same order of magnitude with bearing clearance, can generate the logarithmic curve shape of dynamic pressure effect
Groove, the micro- texture of drag reduction includes the micro- ditch or pit that can generate drag reduction effect.
The utility model has the advantages that compared with prior art, the present invention has advantage following prominent:
The alternative water lubrication hydrostatic bearing electro spindle of the present invention, moreover it is possible to save huge peripheral high service device, significantly
Reduce main shaft operating cost.Electro spindle is radial using dynamic pressure helicla flute, thrust bearing joint supports, and dynamic pressure spiral grooved bearing is dynamic
Press effect significant, the revolving speed for forming full membrane fluid lubrication is low, reduces main shaft friction and wear in low speed operation；In high speed work
Under condition, the bearing capacity and stiffness of main shaft is big, stability is good, has good Static and dynamic performance.The platform area of dynamic pressure spiral grooved bearing
Also it is machined with the micro- texture of drag reduction, when high speed can effectively reduce the viscous drag of lubricating fluid, reduce bearing temperature rise, enhancing main shaft heat
Stability improves the limit speed and rotating accuracy of main shaft.
The bearing shell of dynamic pressure spiral grooved bearing is made of self-lubricating material (such as special carbon graphite), and electro spindle is starting and shutting down
When bearing fretting wear it is small, ensure that the safety of electro spindle.It is prepared by the axle journal and thrust panel surface of dynamic pressure spiral grooved bearing
There is composite coating (as prepared the nano combined painting of Ta-Si base using twin cathode metal-non-metal plasma sputter deposition technology
Layer), bearing has good anti-cavitation corrosion in water lubrication, can significantly extend the service life of electro spindle.
The gas injection sealing ring at bearing both ends not only prevents lubricating fluid water from flowing out hull outside, also effectively prevents liquid water
Along electro spindle axially into the gap between motor stator and rotor, thus ensure that electro spindle operation safety and
Reliability.
Detailed description of the invention
Fig. 1 is that high speed water-lubricated dynamic spiral grooved bearing electro spindle of the invention shows along the structure of intake tunnel direction vertical profile
It is intended to；
Fig. 2 is that high speed water-lubricated dynamic spiral grooved bearing electro spindle of the invention shows along the structure of inlet channel direction vertical profile
It is intended to；
Fig. 3 is the structural schematic diagram of dynamic pressure spiral grooved bearing；A) water-lubricated dynamic spiral grooved thrust bearing, b) water lubrication is dynamic
Press grooved liquid lubricated journal bearing；
In figure: the corresponding relationship between serial number and parts title is as shown in the table:
Specific embodiment
A kind of high speed water-lubricated dynamic spiral grooved bearing electro spindle of the invention, including shell 7, is placed in shell 7
Dynamic pressure grooved liquid lubricated journal bearing and thrust bearing combine the main shaft 1 of bearing using radial direction-thrust bearing, are placed in bearing end
Contactless forward and backward gas injection sealing ring, with 1 cone match of main shaft installation rotor 15, be placed in outside motor stator 14
Cooling jacket 13, the peripheral equipment in portion.Dynamic pressure grooved liquid lubricated journal bearing and thrust bearing are all made of water as lubricant, and periphery is set
Standby includes frequency converter, air supply system and cooling water system etc..
Main shaft 1 is combined by dynamic pressure helicla flute radial direction-thrust bearing to be supported.Wherein, before dynamic pressure grooved liquid lubricated journal bearing includes
Transverse bearing and rear transverse bearing, preceding transverse bearing include preceding transverse bearing axle journal 9 and preceding transverse bearing bearing shell 8, rear radial axle
It contracts and includes rear transverse bearing axle journal 11 and rear transverse bearing bearing shell 10；At preceding transverse bearing axle journal 9 and rear transverse bearing axle journal 11
In the middle part of main shaft 1, preceding transverse bearing bearing shell 8 and rear transverse bearing bearing shell 10 are fixedly installed in shell 7；Dynamic pressure helicla flute stops
Thrust bearing includes preceding thrust bearing and rear thrust bearing, and preceding thrust bearing includes preceding thrust shoe 3 and thrust button 5, rear thrust bearing
Including rear thrust shoe 6 and thrust button 5；5 interference of thrust button is installed on 1 front end of main shaft, and preceding thrust shoe 3 is pushed up by preceding gas injection sealing ring 2
It fastens, rear thrust shoe 6 is mounted in shell 7, and preceding thrust shoe 3 and rear thrust shoe 6 are spaced by thrust bearing baffle ring 4.
It is carved with biserial herringbone spiral groove on preceding transverse bearing axle journal 9 and rear transverse bearing axle journal 11, in thrust button 5
Also helicla flute, the front and rear surfaces packet of preceding transverse bearing axle journal 9, rear transverse bearing axle journal 11 and thrust button 5 are carved in front and rear surfaces
The area Kuo Cao 20, platform area 21 and dam area 22, while platform area 21 is also machined with the micro- texture 23 of drag reduction.The depth and dynamic pressure spiral of helicla flute
Slot transverse bearing, dynamic pressure Spiral Groove Thrust Bearing bearing clearance be in the same order of magnitude.Under high-speed working condition, helicla flute generates aobvious
The dynamic pressure effect of work is with supports main shaft 1, while the micro- texture 23 of drag reduction can also play the role of certain drag reduction.
Preceding transverse bearing bearing shell 8, rear transverse bearing bearing shell 10, preceding thrust shoe 3 and rear thrust shoe 6 are all by special carbon graphite system
At special carbon graphite is a kind of self-lubricating material, has extremely low friction and wear characteristic.Using twin cathode metal-non-metal etc. from
Sub- sputter-deposition technology prepares Ta-Si in the front and rear surfaces of preceding transverse bearing axle journal 9, rear transverse bearing axle journal 11 and thrust button 5
Base nano-composite coating 24, to improve the anti-cavitation corrosion of bearing.
Main shaft 1 is driven by the rare earth permanent magnet brushless direct current motor that motor stator 14 and rotor 15 form, and motor is placed in
1 end of main shaft；Rotor 15, which is positioned by the conical surface and passes through locking nut 16, is anchored on 1 end of main shaft, 14 interference of motor stator
Be coupled be interference fitted on the outside of the inside of cooling jacket 13, cooling jacket 13 and be installed in back casing 17, rotor 15 and
Motor stator 14 is answered axially opposing.
Shell inlet channel 702 and shell water outlet 703 are provided in shell 7, be provided on forward and backward transverse bearing bearing shell with
The preceding transverse bearing inlet channel 804 and rear transverse bearing inlet channel 1004 that shell inlet channel 702 communicates.Preceding transverse bearing inlet channel
The left O-ring seals 802 of transverse bearing and the right O-ring seals 803 of preceding transverse bearing, preceding transverse bearing axis before 804 two sides are provided with
Watts 8 insides are provided with the preceding transverse bearing catch basin 801 communicated with preceding transverse bearing inlet channel 804；Transverse bearing inlet channel afterwards
1004 two sides are provided with the left O-ring seals 1002 of rear transverse bearing and the right O-ring seals 1003 of rear transverse bearing, rear transverse bearing
The rear transverse bearing catch basin 1001 communicated with rear transverse bearing inlet channel 1004 is provided on the inside of bearing shell 10.In preceding transverse bearing
Front end, the rear end of rear transverse bearing, be respectively arranged between the transverse bearing of front and back before effluent trough 602,705 and of intermediate effluent trough
Effluent trough 1201 afterwards, preceding effluent trough 602 and rear effluent trough 1201 pass through rear thrust shoe water outlet 603 and rear gas injection sealing ring respectively
Water outlet 1204 is communicated with shell water outlet 703.The thrust communicated with shell inlet channel 702 is provided on thrust bearing baffle ring 4
Bearing baffle ring inlet channel 401, gas injection sealing ring effluent trough before being provided in the preceding gas injection sealing ring 2 of preceding thrust bearing front end
201, and pass through preceding gas injection sealing ring water outlet 202, preceding thrust shoe water outlet 301, then communicated with shell water outlet 703.
Lubricant medium water enters shell inlet channel 702 by water inlet 701, then flows separately through preceding transverse bearing inlet channel 804, rear diameter
To bearing inlet channel 1004, rear thrust shoe inlet channel 601, thrust bearing baffle ring inlet channel 401, it is radial to be flowed into dynamic pressure helicla flute
It is rear to flow through preceding effluent trough 602, intermediate effluent trough 705, rear effluent trough again in the gap of bearing and dynamic pressure Spiral Groove Thrust Bearing
1201 and preceding gas injection sealing ring effluent trough 201 flow back into shell return water road 703, from water outlet 704 flow out electro spindle, then again
It recycles.
Shell air intake duct 707 is provided in shell 7, gas injection sealing ring air intake duct before being provided in preceding gas injection sealing ring 2
204, preceding gas injection sealing ring air intake duct 204 is communicated with preceding gas injection sealing ring pneumatic trough 205, after being provided in rear gas injection sealing ring 12
Gas injection sealing ring air intake duct 1203, rear gas injection sealing ring air intake duct 1203 are communicated with rear gas injection sealing ring pneumatic trough 1202.Compression
Air is entered by preceding gas injection sealing ring air inlet 203, rear gas injection sealing ring air inlet 706, via preceding gas injection sealing ring air intake duct
204, shell air intake duct 707 and rear gas injection sealing ring air intake duct 1203 flows into preceding gas injection sealing ring pneumatic trough 205 and rear gas injection is close
Seal ring pneumatic trough 1202, to prevent lubricant medium water from flowing into motor or outflow shell 7.
Claims (9)
1. a kind of high speed water-lubricated dynamic spiral grooved bearing electro spindle, which is characterized in that the electro spindle includes shell (7), setting
In the shell (7) dynamic pressure grooved liquid lubricated journal bearing, be arranged in the dynamic pressure grooved liquid lubricated journal bearing main shaft (1),
Be arranged the main shaft (1) front end dynamic pressure Spiral Groove Thrust Bearing, setting the main shaft (1) end rotor (15)
With motor stator (14), the cooling jacket (13) being mounted on outside the motor stator (14), setting in dynamic pressure helicla flute thrust
Bearing front end and the contactless preceding gas injection sealing ring (2) of dynamic pressure grooved liquid lubricated journal bearing rear end, rear gas injection sealing ring (12) are main
Axis (1) is turned using dynamic pressure grooved liquid lubricated journal bearing and the joint bearing of dynamic pressure Spiral Groove Thrust Bearing by motor stator (14), motor
The rare earth permanent magnet brushless direct current motor driving of sub (15) composition.
2. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 1, which is characterized in that the dynamic pressure spiral shell
Spin slot transverse bearing includes preceding transverse bearing and rear transverse bearing, and preceding transverse bearing includes preceding transverse bearing axle journal (9) and preceding diameter
To bearing bush (8), rear transverse bearing includes rear transverse bearing axle journal (11) and rear transverse bearing bearing shell (10)；Preceding transverse bearing
Axle journal (9) and rear transverse bearing axle journal (11) are in the middle part of main shaft (1), preceding transverse bearing bearing shell (8) and rear transverse bearing axis
Watt (10) are fixedly installed in shell (7).
3. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 1, which is characterized in that the dynamic pressure spiral shell
Spin slot thrust bearing includes preceding thrust bearing and rear thrust bearing, and preceding thrust bearing includes preceding thrust shoe (3) and thrust button (5),
Thrust bearing includes rear thrust shoe (6) and thrust button (5) afterwards；Thrust button (5) interference is installed on main shaft (1) front end, preceding thrust shoe
(3) fixation is held out against by preceding gas injection sealing ring (2), rear thrust shoe (6) is mounted in shell (7), preceding thrust shoe (3) and rear thrust shoe
(6) it is spaced by thrust bearing baffle ring (4).
4. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 2, which is characterized in that radial before described
It is carved with biserial herringbone spiral groove on bearing journal (9) and rear transverse bearing axle journal (11), in the front and rear surfaces of thrust button (5)
Also it is carved with helicla flute, the front and rear surfaces of preceding transverse bearing axle journal (9), rear transverse bearing axle journal (11) and thrust button (5) include slot
Area (20), platform area (21) He Baqu (22), while platform area (21) are also machined with the micro- texture of drag reduction (23).
5. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 2 or 3, which is characterized in that before described
Transverse bearing bearing shell (8), rear transverse bearing bearing shell (10), preceding thrust shoe (3) and rear thrust shoe (6) are all by self-lubricating material system
At；The preceding transverse bearing axle journal (9), rear transverse bearing axle journal (11) and thrust button (5) surface are prepared with anti-cavitation corrosion coating
(24)；The self-lubricating material includes special carbon graphite.
6. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 1, which is characterized in that the motor turns
Sub (15), which are positioned by the conical surface and pass through locking nut (16), is anchored on main shaft (1) end, motor stator (14) interference fit installation
On the inside of the cooling jacket (13), interference fit is installed in back casing (17) on the outside of cooling jacket (13), rotor (15) with
Motor stator (14) is answered axially opposing.
7. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 1,2 or 3, which is characterized in that described
It is provided with shell inlet channel (702) and shell water outlet (703) in shell (7), is set on forward and backward transverse bearing bearing shell (8) (10)
It is equipped with the preceding transverse bearing inlet channel (804) communicated with shell inlet channel (702) and rear transverse bearing inlet channel (1004).Preceding diameter
The left O-ring seals of transverse bearing (802) and the right O-ring seals of preceding transverse bearing before being provided with to bearing inlet channel (804) two sides
(803), the preceding transverse bearing communicated with preceding transverse bearing inlet channel (804) is provided on the inside of preceding transverse bearing bearing shell (8) to catchment
Slot (801)；Transverse bearing inlet channel (1004) two sides are provided with the left O-ring seals of rear transverse bearing (1002) and rear radial axle afterwards
It holds right O-ring seals (1003), is provided on the inside of rear transverse bearing bearing shell (10) and is communicated with rear transverse bearing inlet channel (1004)
Rear transverse bearing catch basin (1001).Between the front end of preceding transverse bearing, the rear end of rear transverse bearing, front and back transverse bearing
It is respectively arranged with preceding effluent trough (602), intermediate effluent trough (705) and rear effluent trough (1201), preceding effluent trough (602) and rear water outlet
Slot (1201) passes through rear thrust shoe water outlet (603) and rear gas injection sealing ring water outlet (1204) and shell water outlet respectively
(703) it communicates；The thrust bearing baffle ring inlet channel communicated with shell inlet channel (702) is provided on thrust bearing baffle ring (4)
(401), gas injection sealing ring effluent trough (201) before being provided in the preceding gas injection sealing ring (2) of preceding thrust bearing front end, and pass through
Preceding gas injection sealing ring water outlet (202), preceding thrust shoe water outlet (301) are crossed, is then communicated with shell water outlet (703).
8. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 1,2 or 3, which is characterized in that described
It is provided with shell air intake duct (707) in shell (7), gas injection sealing ring air intake duct before being provided in preceding gas injection sealing ring (2)
(204), preceding gas injection sealing ring air intake duct (204) communicates with preceding gas injection sealing ring pneumatic trough (205), in rear gas injection sealing ring (12)
It is provided with rear gas injection sealing ring air intake duct (1203), rear gas injection sealing ring air intake duct (1203) and rear gas injection sealing ring pneumatic trough
(1202) it communicates.
9. high speed water-lubricated dynamic spiral grooved bearing electro spindle according to claim 4, which is characterized in that the helicla flute
Including being in the same order of magnitude with bearing clearance, the groove of the logarithmic curve shape of dynamic pressure effect can be generated, the drag reduction is micro-
Texture (23) includes the micro- ditch or pit that can generate drag reduction effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810927290.2A CN109128224A (en) | 2018-08-15 | 2018-08-15 | High speed water-lubricated dynamic spiral grooved bearing electro spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810927290.2A CN109128224A (en) | 2018-08-15 | 2018-08-15 | High speed water-lubricated dynamic spiral grooved bearing electro spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109128224A true CN109128224A (en) | 2019-01-04 |
Family
ID=64789477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810927290.2A Pending CN109128224A (en) | 2018-08-15 | 2018-08-15 | High speed water-lubricated dynamic spiral grooved bearing electro spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109128224A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592925A (en) * | 2022-03-31 | 2022-06-07 | 北京大臻科技有限公司 | Magnetic suspension hydrogen turbine expansion device and method |
| CN114635872A (en) * | 2022-04-19 | 2022-06-17 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU917927A1 (en) * | 1979-12-26 | 1982-04-07 | Ордена Трудового Красного Знамени Экспериментальный Научно-Исследовательский Институт Металлорежущих Станков | Electric spindle with gaseous bearings |
| CN1084618A (en) * | 1993-04-19 | 1994-03-30 | 杜长春 | Self-pumping oil lubricated radial sliding bearing |
| 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 |
| CN101564770A (en) * | 2009-05-15 | 2009-10-28 | 西安交通大学 | High-speed electric main shaft device for lubricating hydrodynamic and hydrostatic bearings by adopting water |
| CN103322067A (en) * | 2013-06-21 | 2013-09-25 | 东南大学 | Conical dynamic pressure spiral groove bearing containing self-lubricating material |
-
2018
- 2018-08-15 CN CN201810927290.2A patent/CN109128224A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU917927A1 (en) * | 1979-12-26 | 1982-04-07 | Ордена Трудового Красного Знамени Экспериментальный Научно-Исследовательский Институт Металлорежущих Станков | Electric spindle with gaseous bearings |
| CN1084618A (en) * | 1993-04-19 | 1994-03-30 | 杜长春 | Self-pumping oil lubricated radial sliding bearing |
| 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 |
| CN101564770A (en) * | 2009-05-15 | 2009-10-28 | 西安交通大学 | High-speed electric main shaft device for lubricating hydrodynamic and hydrostatic bearings by adopting water |
| CN103322067A (en) * | 2013-06-21 | 2013-09-25 | 东南大学 | Conical dynamic pressure spiral groove bearing containing self-lubricating material |
Non-Patent Citations (3)
| Title |
|---|
| 冯慧慧: "水润滑轴承电主轴转子动力学特性分析", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 吴建康 等: "双向人字槽液体润滑径向轴承动力性能", 《机械科学与技术》 * |
| 蒋书运 等: "高速精密水润滑电主轴关键技术研究进展", 《机械设计与制造工程》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114592925A (en) * | 2022-03-31 | 2022-06-07 | 北京大臻科技有限公司 | Magnetic suspension hydrogen turbine expansion device and method |
| CN114635872A (en) * | 2022-04-19 | 2022-06-17 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
| CN114635872B (en) * | 2022-04-19 | 2023-09-05 | 广东美芝制冷设备有限公司 | Fan and cleaning equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103846459B (en) | A kind of electro spindle of dynamic and static pressure integrated gas bearing supporting | |
| CN205566014U (en) | Electric main shaft of two coolings | |
| CN103286678B (en) | A kind of Multifunction internal formula dynamic/static piezoelectric main shaft for efficient high-speed precision machine tool | |
| CN101718297B (en) | Dynamic and static pressure ceramic sliding bearing lubricated by water or water-based lubricating liquid | |
| CN105129060B (en) | For there is the integrated form water lubriucated bearing of hub wheel edge propeller | |
| CN105149621A (en) | Electric spindle supported by magnetic suspension and lambdoid-groove dynamic pressure and static pressure gas combined bearings | |
| CN106685129B (en) | A kind of high-speed, high precision electro spindle based on single loop thermal siphon cooling structure | |
| CN105195764A (en) | Self-lubricating self-sealing graphite gas-floatation electrostatic pressure spindle structure | |
| CN104014823A (en) | Electric spindle of bidirectional herringbone groove hydrodynamic/hydrostatic integrated gas bearing support | |
| CN105598477B (en) | A kind of high-speed, high precision electro spindle cooled down based on shaft core heat pipe | |
| CN201399720Y (en) | CBN high-speed built-in grinding wheel rack of electric spindle | |
| CN109128224A (en) | High speed water-lubricated dynamic spiral grooved bearing electro spindle | |
| CN101579841A (en) | Hydro-hybrid bearing used for grinding wheel main shaft of grinding machine | |
| CN2719455Y (en) | High-speed electric main spindle of hydrostatic-hydrodynamic bearing | |
| CN109322840B (en) | Centrifugal refrigerant pump | |
| CN103121112A (en) | Gas-self-supplying gas bearing supporting motorized spindle | |
| CN111070091B (en) | Movable center tailstock, tailstock system and machine tool | |
| CN109660057B (en) | Unidirectional rotation permanent magnet high-speed motor and bidirectional air bearing thereof | |
| CN205798462U (en) | A kind of hydrostatic spindle | |
| CN212553328U (en) | Special dynamic pressure shafting of grinding machine with automatic circulation oil supply system | |
| CN212310860U (en) | Internal cooling dynamic and static oil pressure permanent magnet servo electric main shaft of high-speed mandrel | |
| CN201405071Y (en) | High-speed electric spindle | |
| CN204639151U (en) | A kind of Dynamic-static pressure main shaft device | |
| CN219665127U (en) | Air supporting main shaft structure of leading cooling | |
| CN209805569U (en) | Unidirectional rotation permanent magnet high-speed motor and bidirectional air bearing thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |