CN110259827A - A kind of oil hydrostatic spindle system - Google Patents
A kind of oil hydrostatic spindle system Download PDFInfo
- Publication number
- CN110259827A CN110259827A CN201910549135.6A CN201910549135A CN110259827A CN 110259827 A CN110259827 A CN 110259827A CN 201910549135 A CN201910549135 A CN 201910549135A CN 110259827 A CN110259827 A CN 110259827A
- Authority
- CN
- China
- Prior art keywords
- oil
- bearing shell
- main shaft
- oil pocket
- watt
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/06—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
- F16C32/0629—Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings supported by a liquid cushion, e.g. oil cushion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
Abstract
The invention discloses a kind of oily hydrostatic spindle systems, including watt set, bearing shell, main shaft, inner end cap, outer end cap and sealing ring.Due to the unique structure design of bearing shell, thoroughly solves tradition and need to process the various drawbacks of You Wedged bring, overturned the design concept of traditional oils hydrostatic spindle completely.1. this structure has the advantage that due to without You Wedged, so handling ease, precision is also easy to guarantee 2. to save flash link 3. due to using 3: 120 ° of balanced fuel feeding, it ensure that the harmony of entire oily static-pressure system internal oil pressure, making main shaft 3 after fuel feeding, no matter axial or radial force is equal, it is suspended in the center of bearing shell 2 completely, main shaft running accuracy can reach≤and 4. bearing capacity greatly promotes 1um, and the traditional oils hydrostatic spindle system bearing power than same size promotes 30% or more.
Description
Technical field
The present invention relates to a kind of oily hydrostatic spindle systems more particularly to a kind of radial and axial 3: 120 ° of equilibriums respectively to supply
Oil and bearing shell oil pocket are Wu You Wedged oil supply structure.
Background technique
Currently, the bearing shell of all oil hydrostatic spindle systems is all made of You Wedged structure, most of fuel system all uses single-point
Fuel feeding mode.But during actual processing You Wedged, either using Che You Wedged, Tang You Wedged, numerical control processing You Wedged or electricity
Spark processes You Wedged, it is ensured that the sealing oil edge equalization of You Wedged is all especially difficult, especially high to equipment and operator's requirement, works as oil
When the sealing oil edge of Wedged is unequal, ideal design requirement is just not achieved in bearing capacity, and when using electrical discharge machining You Wedged, oil
Wedged surrounding flash can be very hard, it is more difficult to clear up, such as cleaning is not clean, will lead to " seizing " phenomenon, will lead to entire oil when serious
Static-pressure system paralysis！Even if flash cleaning work is also less susceptible to, slightly not using Che You Wedged, Tang You Wedged, numerical control processing You Wedged
It is careful, also can often it be out of order.Single-point fuel feeding mode makes in oil pocket to the pressure of main shaft it is difficult to ensure that equalization, imitates the suspension of main shaft
Fruit cannot reach desirable, and spindle rotation accuracy is often poor, and ideal effect is not achieved in bearing capacity.
Summary of the invention
To solve the problems, such as above-mentioned and defect, the present invention provides a kind of brand-new oily hydrostatic spindle system designs
Theory and method.
Technical solution of the present invention:
A kind of oil hydrostatic spindle system, including watt set 1, bearing shell 2, main shaft 3, inner end cap 4, outer end cap 5, sealing ring 6 and section
Flow screw 7；
The main shaft 3 is assemblied in bearing shell 2, guarantees that the shaft shoulder of main shaft 3 is concordant with 2 end of bearing shell；Described watt of set 1 is sleeved on
Outside bearing shell 2；The inner end cap 4 passes through main shaft 3, and is fixed on 2 both ends of bearing shell with screw fit；The outer end cap 5 passes through master
Axis 3, and be fixedly connected with watt 1 end of set by screw, it is ensured that cavity, as oil return are formed between outer end cap 5 and inner end cap 4
Chamber；Sealing ring 6 is studded on the inside of the outer end cap 5；
Correspond to 2 mistress's oil pocket position of bearing shell on the tube wall of described watt of set 1 and is equipped with oil inlet passage 9 and drainback passage A；Into
Oily 9 two sides symmetric position of channel is simultaneously respectively equipped with drainback passage B10 and drainback passage C11 with oil back chamber position corresponding position, and leads to
It crosses technique plug 8 and realizes that oil back chamber is isolated with extraneous；
The tube-shaped structure penetrated through centered on 2 main body of bearing shell, internal and external walls are equipped with circle shape groove, respectively with watt
Set 1, main shaft 3 form mistress's oil pocket, interior room oil pocket；Mistress's oil pocket is by the circle shape groove and a watt set 1 on 2 outer wall of bearing shell
It is formed between inner wall；The interior room oil pocket is by being formed between 3 outer wall of the circle shape groove on 2 inner wall of bearing shell and main shaft；
The interior room oil pocket width is greater than the width of mistress's oil pocket；It is separated by 120 ° on the tube wall of the interior room oil pocket and a diameter is respectively set
To fuel feed hole, to be connected to interior room oil pocket and mistress's oil pocket, to give 3 fuel feeding of main shaft；
Oil pocket also is assisted comprising interior room on the bearing shell 2, through the axial tube wall of bearing shell 2, three interior rooms assist oil pocket phase
It is arranged every 120 °, and is penetrated through respectively with three radial fuel feed holes, a technique plug 8 is respectively installed at three interior room auxiliary oil pocket both ends
To control the disengaging of hydraulic oil；
Hydraulic oil successively enters through oil inlet passage 9, mistress's oil pocket, the radial fuel feed hole on bearing shell 2 on watt set 1 from fuel tank
In interior room oil pocket, realization gives main shaft 3 fuel feeding；Hydraulic oil flows back to fuel tank through drainback passage A, or flows into oil back chamber, again by being located at
The drainback passage B10 and drainback passage C11 at 9 both ends of oil inlet passage flow back to fuel tank.
Beneficial effects of the present invention:
Due to the unique structure design of bearing shell, thoroughly solves tradition and need to process the various drawbacks of You Wedged bring, completely
The design concept of traditional oils hydrostatic spindle is overturned.This structure experiment proves that have the advantage that 1. due to without You Wedged, so
Handling ease, precision are also easy to guarantee 2. to save flash link 3. due to ensure that whole using 3: 120 ° of balanced fuel feeding
The harmony of a oil static-pressure system internal oil pressure, making main shaft 3 after fuel feeding, no matter axial or radial force is equal, is suspended in completely
The center of bearing shell 2, main shaft running accuracy can reach≤and 4. bearing capacity greatly promotes 1um, and it is more quiet than the traditional oils of same size
Axis system bearing capacity is pressed to promote 30% or more.A kind of oily hydrostatic spindle of low noise low vibration large-load force has overturned original oil
The structure of hydrostatic spindle, yield rate are increased to 100% by original 60%, and vibrating noise is reduced to 0dB. by the 10dB of old structure
Loading force improves 35%.
Detailed description of the invention
Fig. 1 is oily static-pressure system structural schematic diagram.
In figure: 1 watt of set；2 bearing shells；3 main shafts；4 inner end caps；5 outer end caps；6 sealing rings；7 impedance screws；8 technique plugs 8；9
Oil inlet passage 9；10 drainback passage B10；11 drainback passage C11.
Specific embodiment
Below in conjunction with attached drawing and technical solution, a specific embodiment of the invention is further illustrated.
A kind of oil hydrostatic spindle system, including watt set 1, bearing shell 2, main shaft 3, inner end cap 4, outer end cap 5, sealing ring 6 and spiral shell
Nail；
The main shaft 3 is assemblied in bearing shell 2, guarantees that the shaft shoulder of main shaft 3 is concordant with 2 end of bearing shell；Described watt of set 1 is sleeved on
Outside bearing shell 2；The inner end cap 4 passes through main shaft 3, and is fixed on 2 both ends of bearing shell with screw fit；The outer end cap 5 passes through master
Axis 3, and be fixedly connected with watt 1 end of set by screw, it is ensured that cavity, as oil return are formed between outer end cap 5 and inner end cap 4
Chamber；Sealing ring 6 is studded on the inside of the outer end cap 5；
Correspond to 2 mistress's oil pocket position of bearing shell on the tube wall of described watt of set 1 and is equipped with oil inlet passage 9 and drainback passage A；Into
Oily 9 two sides symmetric position of channel is simultaneously respectively equipped with drainback passage B10 and drainback passage C11 with oil back chamber position corresponding position, and leads to
It crosses technique plug 8 and realizes that oil back chamber is isolated with extraneous；
The tube-shaped structure penetrated through centered on 2 main body of bearing shell, internal and external walls are equipped with circle shape groove, respectively with watt
Set 1, main shaft 3 form mistress's oil pocket, interior room oil pocket；Mistress's oil pocket is by the circle shape groove and a watt set 1 on 2 outer wall of bearing shell
It is formed between inner wall；The interior room oil pocket is by being formed between 3 outer wall of the circle shape groove on 2 inner wall of bearing shell and main shaft；
The interior room oil pocket width is greater than the width of mistress's oil pocket；It is separated by 120 ° on the tube wall of the interior room oil pocket and a diameter is respectively set
To fuel feed hole, to be connected to interior room oil pocket and mistress's oil pocket, to give 3 fuel feeding of main shaft；
Oil pocket also is assisted comprising interior room on the bearing shell 2, through the axial tube wall of bearing shell 2, three interior rooms assist oil pocket phase
It is arranged every 120 °, and is penetrated through respectively with three radial fuel feed holes, a technique plug 8 is respectively installed at three interior room auxiliary oil pocket both ends
To control the disengaging of hydraulic oil；
Hydraulic oil successively enters through oil inlet passage 9, mistress's oil pocket, the radial fuel feed hole on bearing shell 2 on watt set 1 from fuel tank
In interior room oil pocket, realization gives main shaft 3 fuel feeding；Hydraulic oil flows back to fuel tank through drainback passage A, or flows into oil back chamber, again by being located at
The drainback passage B10 and drainback passage C11 at 9 both ends of oil inlet passage flow back to fuel tank.
When pressure oil is by a watt set 1, into bearing shell 2, while applying pressure to main shaft 3, pressure oil can be continually
Ground is flowed out from two sides inner end cap 4, becomes the oil liquid of pressure very little, flows back to fuel tank from oil back chamber, sealing ring 6 blocked oil return from
A possibility that outer end cap 5 flows out, plays the non-leakage purpose of oil liquid.
The bearing shell 2 is fitted into watt set 1 by way of cold charge, and bearing shell 2 is interference fit with a watt set 1；Bearing shell 2 and main shaft
3 be clearance fit.
The effective bearing length in 2 both ends of bearing shell is the 1/3~1/4 of 2 overall length of bearing shell, guarantees oily hydrostatic spindle system fuel feeding
Pressure is constant, and recirculating oil quantity is enough, and system temperature rise is controllable；After effective bearing length determines, to calculate the hole of interior room auxiliary oil pocket
Diameter size and length, auxiliary oil pocket aperture guarantees between 0.2-0.3 millimeters bigger than effectively support aperture, more to improve oily static pressure
The performance indexes of axis system, main includes improving temperature rise index, vibration index, oil return figureofmerit.
Described watt of 1 shape of set is round, square or hexagon.
Claims (5)
1. a kind of oil hydrostatic spindle system, which is characterized in that the oil hydrostatic spindle system includes watt set (1), bearing shell (2), main shaft
(3), inner end cap (4), outer end cap (5), sealing ring (6) and screw；
The main shaft (3) is assemblied in bearing shell (2), guarantees that the shaft shoulder of main shaft (3) is concordant with bearing shell (2) end；Described watt of set (1)
It is external to be sleeved on bearing shell (2)；The inner end cap (4) passes through main shaft (3), and is fixed on bearing shell (2) both ends with screw fit；It is described
Outer end cap (5) passes through main shaft (3), and is fixedly connected with watt set (1) end by screw, it is ensured that outer end cap (5) and inner end cap (4)
Between form cavity, as oil back chamber；Sealing ring (6) are studded on the inside of the outer end cap (5)；
Correspond to bearing shell (2) mistress's oil pocket position on the tube wall of described watt of set (1) and is equipped with oil inlet passage and drainback passage A；Into
Oily channel two sides symmetric position is simultaneously respectively equipped with drainback passage B and drainback passage C with oil back chamber position corresponding position, and passes through work
Skill plug realizes that oil back chamber is isolated with extraneous；
The tube-shaped structure penetrated through centered on bearing shell (2) main body, internal and external walls are equipped with circle shape groove, cover respectively with watt
(1), main shaft (3) forms mistress's oil pocket, interior room oil pocket；Mistress's oil pocket be by bearing shell (2) outer wall circle shape groove with
It is formed between watt set (1) inner wall；The interior room oil pocket is by the circle shape groove and main shaft (3) outer wall on bearing shell (2) inner wall
Between formed；The interior room oil pocket width is greater than the width of mistress's oil pocket；It is separated by 120 ° points on the tube wall of the interior room oil pocket
Not She Zhi a radial fuel feed hole, to be connected to interior room oil pocket and mistress's oil pocket, to give main shaft (3) fuel feeding；
Oil pocket also is assisted comprising interior room on the bearing shell (2), through bearing shell (2) axial tube wall, three interior rooms assist oil pocket phase
It is arranged every 120 °, and is penetrated through respectively with three radial fuel feed holes, a technique plug is respectively installed at three interior room auxiliary oil pocket both ends
To control the disengaging of hydraulic oil；
Hydraulic oil successively enters through oil inlet passage, mistress's oil pocket, the radial fuel feed hole on bearing shell (2) on watt set (1) from fuel tank
In interior room oil pocket, main shaft (3) fuel feeding is given in realization；Hydraulic oil flows back to fuel tank through drainback passage A, or flows into oil back chamber, passes through position again
Drainback passage B and drainback passage C in oil inlet passage both ends flow back to fuel tank.
2. oil hydrostatic spindle system according to claim 1, which is characterized in that the bearing shell (2) is by way of cold charge
It is fitted into watt set (1), bearing shell (2) is interference fit with a watt set (1)；Bearing shell (2) and main shaft (3) are clearance fit.
3. oil hydrostatic spindle system according to claim 1 or 2, which is characterized in that bearing shell (2) both ends effectively support
Length is the 1/3~1/4 of bearing shell (2) overall length, guarantees that oily hydrostatic spindle system charge oil pressure is constant, recirculating oil quantity is enough, system temperature
It rises controllable；After effective bearing length determines, to calculate the pore size and length of interior room auxiliary oil pocket, auxiliary oil pocket aperture is protected
Between card is 0.2-0.3 millimeters bigger than effectively support aperture, more to improve the performance indexes of oily hydrostatic spindle system.
4. oil hydrostatic spindle system according to claim 1 or 2, which is characterized in that described watt of set (1) shape be circle,
Square or hexagon.
5. oil hydrostatic spindle system according to claim 3, which is characterized in that described watt of set (1) shape is round, square
Shape or hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549135.6A CN110259827B (en) | 2019-06-24 | 2019-06-24 | Oil static pressure main shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910549135.6A CN110259827B (en) | 2019-06-24 | 2019-06-24 | Oil static pressure main shaft system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110259827A true CN110259827A (en) | 2019-09-20 |
| CN110259827B CN110259827B (en) | 2020-11-10 |
Family
ID=67920774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910549135.6A Active CN110259827B (en) | 2019-06-24 | 2019-06-24 | Oil static pressure main shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110259827B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661323A (en) * | 2012-05-17 | 2012-09-12 | 焦正玉 | Hydrostatic bearing |
| CN206066217U (en) * | 2016-06-27 | 2017-04-05 | 德清勤龙磨床制造有限公司 | The principal axis lubrication mechanism of bistrique |
| CN108612757A (en) * | 2018-07-13 | 2018-10-02 | 燕山大学 | A kind of active magnetorheological fluid hydrostatic bearing |
| CN208457029U (en) * | 2018-06-07 | 2019-02-01 | 新昌县华科机电设备有限公司 | A kind of compound static pressure main shaft based on static pressure thrust bearing |
| CN109826864A (en) * | 2019-03-26 | 2019-05-31 | 威海奥威尔精密部件有限公司 | A kind of long-lived static main shaft |
| CN209724976U (en) * | 2019-03-27 | 2019-12-03 | 河北工业大学 | A kind of sliding bearing bearing radial and axial power and changeable axial oil pressure |
-
2019
- 2019-06-24 CN CN201910549135.6A patent/CN110259827B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661323A (en) * | 2012-05-17 | 2012-09-12 | 焦正玉 | Hydrostatic bearing |
| CN206066217U (en) * | 2016-06-27 | 2017-04-05 | 德清勤龙磨床制造有限公司 | The principal axis lubrication mechanism of bistrique |
| CN208457029U (en) * | 2018-06-07 | 2019-02-01 | 新昌县华科机电设备有限公司 | A kind of compound static pressure main shaft based on static pressure thrust bearing |
| CN108612757A (en) * | 2018-07-13 | 2018-10-02 | 燕山大学 | A kind of active magnetorheological fluid hydrostatic bearing |
| CN109826864A (en) * | 2019-03-26 | 2019-05-31 | 威海奥威尔精密部件有限公司 | A kind of long-lived static main shaft |
| CN209724976U (en) * | 2019-03-27 | 2019-12-03 | 河北工业大学 | A kind of sliding bearing bearing radial and axial power and changeable axial oil pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110259827B (en) | 2020-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203527143U (en) | Annular universal cooling nozzle of numerical control machine tool | |
| CN204247971U (en) | A kind of air floated high speed electric mandrel | |
| CN204041332U (en) | A kind of bearing (ball) cover annular groove spindle thread seal arrangement | |
| CN110259827A (en) | A kind of oil hydrostatic spindle system | |
| CN203678850U (en) | Roller heated based on heat conduction oil | |
| CN109163010A (en) | Modified self-aligning roller bearing | |
| CN209100488U (en) | Modified self-aligning roller bearing | |
| CN204391958U (en) | A kind of oil cooling structure of servomotor | |
| CN207609733U (en) | A kind of novel high torque single screw extrusion machine speed reducer | |
| CN203599970U (en) | Dust cover assembly for rolling ball high-speed motorized spindle | |
| CN205190355U (en) | Liquid circulation structure in pump body | |
| CN202690713U (en) | Hollow shaft for speed reducer | |
| CN201856122U (en) | Numerical control machine spindle axis cooling device | |
| CN109505865A (en) | A kind of magnetic liquid dual suspension hydrodynamic bearing | |
| CN206280308U (en) | Second-generation reactor coolant pump torsional spring sleeve | |
| CN210522728U (en) | Novel colloid mill | |
| CN204692724U (en) | Mortor operated valve transmission connecting structure | |
| CN204852037U (en) | Wandering star formula burnishing machine flexible drive mechanism | |
| CN205199844U (en) | Lubricating grease mechanism is scribbled to outer lane in giving bearing | |
| CN213744564U (en) | Screw rod support bearing cooling mechanism | |
| CN204704347U (en) | Cooling nut | |
| CN204076793U (en) | Body diameter-setting equipment | |
| CN208818260U (en) | A kind of Water flow detector | |
| CN215928429U (en) | High-precision throttle valve | |
| CN203925994U (en) | Eccentrie helical totorpump screw rod |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |