CN109333077A - The opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type - Google Patents
The opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type Download PDFInfo
- Publication number
- CN109333077A CN109333077A CN201811179267.6A CN201811179267A CN109333077A CN 109333077 A CN109333077 A CN 109333077A CN 201811179267 A CN201811179267 A CN 201811179267A CN 109333077 A CN109333077 A CN 109333077A
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- Prior art keywords
- slot
- annular
- oil
- pressurization
- fixing piece
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Classifications
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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
- B23Q1/25—Movable or adjustable work or tool supports
-
- 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
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
- B23Q1/38—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members using fluid bearings or fluid cushion supports
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention discloses the opposed pressurization slot oil sealing surface formula fluid pressure revolving platforms of dislocation type, including fixing piece and the revolving body being set on fixing piece, fixing piece and revolving body coaxially assemble, fixing piece upper surface is circumferentially uniformly provided with multiple oil pockets, the oil groove bottom centre of each oil pocket is provided with oil input channel, oil pocket is in communication with the outside by oil input channel, first annular pressurization slot and the second annular plenum slot are provided on the face that fixing piece is contacted with revolving body, first annular pressurization slot position is on the inside of oil pocket, second annular plenum slot position is on the outside of oil pocket, third annular plenum slot and fourth annular pressurization slot are provided on the face that revolving body is contacted with fixing piece, third annular plenum slot is on the inside of revolving body, fourth annular is pressurized slot on the outside of revolving body.By opening up opposed pressurization slot on oil sealing surface inside and outside static pressure revolving platform, increase static pressure revolving platform goes out oil liquid resistance, to improve the bearing capacity and oil film rigidity of static pressure revolving platform.
Description
Technical field
The invention belongs to machine tool guideway technical fields, and in particular to the opposed pressurization slot oil sealing surface formula fluid pressure of dislocation type returns
Turntable.
Background technique
Accurate and nanotechnolgy development directly affects national defense industry and the development of civilian industry, and ultra-precision machine tool is real
The primary basis of existing Ultra-precision Turning, and critical component of the guide rail as ultra-precision machine tool, performance largely determine
The precision of ultra-precision machine tool, hydrostatic slideway be able to satisfy precise numerical control machine and other machinery equipment high-bearing capacity,
The support needs of high rigidity, high speed etc. and be used widely.The working principle of hydrostatic slideway is: one is passed through in oil pocket
Constant-pressure oil floats revolving body, when the floatation volume of revolving body is greater than the surface irregularity of upper and lower two supporting plane, is just returning
Oil film is formd between swivel and guide rail, is neat liquid friction between revolving body and guide rail, the outer load acted on revolving body is logical
Oil pocket pressure is crossed to balance.In the course of work, oil pocket pressure changes with the external applied load acted on revolving body and is changed, with balance
The outer load on revolving body is acted on, and guarantees to be in neat liquid Frotteurism between revolving body and guide rail always at work, by
This its visible rigidity is larger by outer load effect.
To traditional hydrostatic slideway or fluid pressure revolving platform, using parallel-plate type oil sealing surface.To resist
The variation of outer load, the oil liquid liquid resistance that the parallel flat gap of variation is formed and changing with load into oil pocket make oil pocket
Pressure change to adapt to the requirement of outer load.To fluid pressure revolving platform, when point-load is acted on turntable, due to
The deformation of turntable keeps the gap of inside and outside oil sealing surface uneven, simultaneously as the rotary motion of revolving body, makes the oil liquid in oil film exist
It is thrown away outward under the action of centrifugal force, so that the inhomogeneities of oil film is aggravated.To increase oil film inner fluid in the effect of centrifugal force
The resistance thrown away outward down, is respectively provided with an opposed pressurization slot on the inside and outside sealing oil edge of fluid pressure revolving platform, and final purpose is
Improve the uniformity of oil film.
Summary of the invention
The purpose of the present invention is to provide a kind of opposed pressurization slot oil sealing surface formula fluid pressure revolving platforms of dislocation type, solve
The problem that existing static pressure revolving platform bearing capacity is low and oil film rigidity is poor.
The technical scheme adopted by the invention is that the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type, including
Fixing piece and the revolving body being set on fixing piece, fixing piece and revolving body coaxially assemble, and fixing piece upper surface is circumferentially uniform
Multiple oil pockets are offered, the oil groove bottom centre of each oil pocket is provided with oil input channel, and oil pocket is in communication with the outside by oil input channel, Gu
Determine to be provided with first annular pressurization slot and the second annular plenum slot on the face that part is contacted with revolving body, first annular pressurization slot position is in oil
Intracavitary side, the second annular plenum slot position are provided with third annular plenum slot on the face that revolving body is contacted with fixing piece on the outside of oil pocket
It is pressurized slot with fourth annular, for third annular plenum slot on the inside of revolving body, fourth annular is pressurized slot on the outside of revolving body.
The features of the present invention also characterized in that
The width that first annular pressurization slot, the second annular plenum slot, third annular plenum slot and fourth annular are pressurized slot is equal
For 0.4~0.6mm, depth is 0.4~0.8mm.
First annular pressurization slot and third annular plenum slot form the opposed pressurization slot of first group of dislocation type, the second annular plenum
Slot and fourth annular pressurization slot form the opposed pressurization slot of second group of dislocation type.
Dislocation distance between first annular pressurization slot and third annular plenum slot is 0.2~0.3mm, the second annular plenum
Dislocation distance between slot and fourth annular pressurization slot is 0.2~0.3mm.
The center corresponding position of fixing piece and revolving body is provided with installation through-hole.
The invention has the advantages that
By opening up opposed pressurization slot on oil sealing surface inside and outside static pressure revolving platform, increase static pressure revolving platform goes out oil liquid
Resistance, to improve the bearing capacity and oil film rigidity of static pressure revolving platform.
Detailed description of the invention
Fig. 1 is the side view of the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type of the present invention；
Fig. 2 is the top view of fixing piece in the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type of the present invention；
Fig. 3 is the bottom view of revolving body in the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type of the present invention；
Fig. 4 is the side view of traditional liquid static pressure revolving platform；
Fig. 5 is the bottom view of revolving body in traditional liquid static pressure revolving platform；
Fig. 6 is the top view of fixing piece in traditional liquid static pressure revolving platform.
In figure, 1. revolving bodies, 2. third annular plenum slots, 3. fourth annulars be pressurized slot, 4. second annular plenum slots, 5. into
Oil duct, 6. oil pockets, 7. first annular pressurization slots, 8. fixing pieces.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
The side view of the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type of the present invention, as shown in Figure 1, including solid
The revolving body 1 determining part 8 and being set on fixing piece 8, fixing piece 8 and revolving body 1 coaxially assemble, 1 center of fixing piece 8 and revolving body
It is provided with installation through-hole, 8 upper surface of fixing piece is circumferentially uniformly provided with multiple oil pockets 6, and the oil groove bottom centre of each oil pocket 6 sets
It is equipped with oil input channel 5, oil pocket 6 is in communication with the outside by oil input channel 5；
First annular pressurization slot 7 and the second annular plenum slot 4 are provided on the face that fixing piece 8 is contacted with revolving body 1, such as Fig. 2
Shown, first annular pressurization slot 7 is located at 6 inside of oil pocket, and the second annular plenum slot 4 is located at 6 outside of oil pocket, revolving body 1 and fixation
Third annular plenum slot 2 and fourth annular pressurization slot 3 are provided on the face that part 8 contacts, as shown in figure 3, third annular plenum slot 2 leans on
Nearly 1 inside of revolving body, fourth annular are pressurized slot by 3 nearly 1 outsides of revolving body；
First annular pressurization slot 7, the second annular plenum slot 4, third annular plenum slot 2 and fourth annular are pressurized the width of slot 3
Degree and depth are equal；
First annular pressurization slot 7, the second annular plenum slot 4, third annular plenum slot 2 and fourth annular are pressurized the width of slot 3
Degree is 0.4~0.6mm, and depth is 0.4~0.8mm；
First annular pressurization slot 7 and third annular plenum slot 2 form the opposed pressurization slot of first group of dislocation type, and the second annular increases
Indent 4 and fourth annular pressurization slot 3 form the opposed pressurization slot of second group of dislocation type, and first annular pressurization slot 7 and third annular
The dislocation distance being pressurized between slot 2 is 0.2~0.3mm, the dislocation between the second annular plenum slot 4 and fourth annular pressurization slot 3
Distance is 0.2~0.3mm；
When first annular pressurization slot 7, the second annular plenum slot 4, third annular plenum slot 2 and fourth annular pressurization slot 3
Width is 0.4~0.6mm, and depth is 0.4~0.8mm, the distance between the inner edge of first annular pressurization slot 7 and oil pocket 6
For 5~6mm, when the distance between the second annular plenum slot 4 and 6 outer rim of oil pocket are 5~6mm, oil pocket boost in pressure effect is most bright
It is aobvious.
Application method: after being passed through pressure oil to oil input channel 5, just having oil liquid in oil pocket 6, at this point, oil liquid passes through revolving body 1
It is flowed out between the contact surface of fixing piece 8, when the oil liquid pressure being passed through reaches a certain level, revolving body 1 is floated, and works as revolving body
When 1 floatation volume is greater than the surface irregularity of upper and lower two supporting plane, oil film just is formd between revolving body 1 and fixing piece 8,
It is neat liquid friction i.e. between guide rail, the outer load acted on revolving body 1 is balanced by oil pocket pressure；In the course of work, oil
Cavity pressure changes with the external applied load acted on revolving body 1 and changes the outer load with balanced action on revolving body 1, and guarantees
It is in neat liquid Frotteurism between revolving body 1 and fixing piece 8 always at work；When work, oil liquid flow through inflow pipeline and into
Oil duct 5 enters oil pocket 6, then through having first annular pressurization slot 7 pressurization slot opposed with the dislocation formula that third annular plenum slot 2 is formed
Oil sealing surface and the oil sealing surface of the opposed pressurization slot of the dislocation formula that is formed of the second annular plenum slot 4 and fourth annular pressurization slot 3 flow back to
Fuel tank forms primary Ioops.This flowing of oil liquid just forms oil between hydrostatic slideway fixing piece 8 and the bearing surface of revolving body 1
Pad is guide rail oil film, and the characteristics such as the bearing capacity and rigidity of fluid pressure revolving platform depend on the characteristic of oil film.
Fluid pressure revolving platform of the invention is returned by the static pressure of oil film thickness variation and traditional structure when Uniform Loads
Turntable is compared, and oil film thickness unevenness caused by load is reduced.When oil liquid flows into the oil of the guide pass of static pressure revolving platform
When chamber, pair that oil liquid forms the first annular pressurization slot 7 flowed through on fixing piece 8 and the third annular plenum slot 2 on revolving body 1
Set the opposed pressurization slot that the fourth annular pressurization slot 3 on pressurization slot, the second annular plenum slot 4 and revolving body 1 is formed.Due to oil liquid
Vortex is formd in slot when flowing through opposed pressurization slot, is increased the flow fluid resistance of oil liquid, is realized the gain to oil pocket pressure,
It is compared than the oil sealing surface without pressurization slot, supercharging effect is more significant；With single annular pressurization slot comparison, supercharging effect makes moderate progress.I.e.
Due to the effect of pressurization slot opposed inside and outside oil pocket, so that liquid when oil liquid flows through static pressure revolving platform oil sealing surface is hindered much larger than traditional
The oil sealing surface of static pressure revolving platform, as shown in Fig. 4, Fig. 5 and Fig. 6, this makes the oil pocket pressure of static pressure revolving platform improve,
Therefore improve the bearing capacity of fluid pressure revolving platform；In addition, due to the second annular plenum slot 4 and revolving body 1 on fixing piece 8
On the opposed pressurization slot that is formed of fourth annular pressurization slot 3 resistance that also makes oil liquid throw away oil pocket because of centrifugal force increase, therefore also subtract
Light existing fluid pressure revolving platform caused oil film when by concentrfated load or partial load unevenly changes or high-speed motion
When cause oil pocket oil liquid to throw away and generate revolution table top between dry friction the problem of.Pass through the oil sealing inside and outside static pressure revolving platform
Opposed pressurization slot is opened up on face, increase static pressure revolving platform goes out oil liquid resistance, to improve the carrying of fluid pressure revolving platform
Ability and oil film rigidity.
The opposed pressurization tank type liquid static pressure revolving platform of the present invention solves existing fluid pressure revolving platform and carries by concentration
The revolution table top that caused oil film unevenly changes or when high-speed motion causes oil pocket oil liquid to throw away when lotus or partial load and generates
Between dry friction the problem of.
Claims (5)
1. the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type, which is characterized in that including fixing piece (8) and be set to
Revolving body (1) on fixing piece (8), the fixing piece (8) and revolving body (1) coaxially assemble, fixing piece (8) the upper surface edge
It is circumferentially uniformly provided with multiple oil pockets (6), the oil groove bottom centre of each oil pocket (6) is provided with oil input channel (5), the oil
Chamber (6) is in communication with the outside by oil input channel (5), is provided with first annular increasing on the face that the fixing piece (8) contacts with revolving body (1)
Indent (7) and the second annular plenum slot (4), the first annular pressurization slot (7) are located on the inside of oil pocket (6), second annular
Pressurization slot (4) is located on the outside of oil pocket (6), is provided with third annular plenum slot on the face that the revolving body (1) contacts with fixing piece (8)
(2) and fourth annular is pressurized slot (3), and the third annular plenum slot (2) is on the inside of the revolving body (1), the Fourth Ring
Shape is pressurized slot (3) on the outside of revolving body (1).
2. the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type according to claim 1, which is characterized in that institute
State first annular pressurization slot (7), the second annular plenum slot (4), third annular plenum slot (2) and fourth annular pressurization slot (3)
Width is 0.4~0.6mm, and depth is 0.4~0.8mm.
3. the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type according to claim 1, which is characterized in that institute
It states first annular pressurization slot (7) and third annular plenum slot (2) forms the opposed pressurization slot of first group of dislocation type, the second annular plenum
Slot (4) and fourth annular pressurization slot (3) form the opposed pressurization slot of second group of dislocation type.
4. the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type according to claim 3, which is characterized in that institute
Stating the dislocation distance between first annular pressurization slot (7) and third annular plenum slot (2) is 0.2~0.3mm, second annular
The dislocation distance being pressurized between slot (4) and fourth annular pressurization slot (3) is 0.2~0.3mm.
5. the opposed pressurization slot oil sealing surface formula fluid pressure revolving platform of dislocation type according to claim 1, which is characterized in that institute
The center corresponding position for stating fixing piece (8) and the revolving body (1) is provided with installation through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179267.6A CN109333077B (en) | 2018-10-10 | 2018-10-10 | Dislocation type opposite pressurizing groove oil seal surface type liquid static pressure rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811179267.6A CN109333077B (en) | 2018-10-10 | 2018-10-10 | Dislocation type opposite pressurizing groove oil seal surface type liquid static pressure rotary table |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109333077A true CN109333077A (en) | 2019-02-15 |
| CN109333077B CN109333077B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811179267.6A Active CN109333077B (en) | 2018-10-10 | 2018-10-10 | Dislocation type opposite pressurizing groove oil seal surface type liquid static pressure rotary table |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935851A (en) * | 2021-02-04 | 2021-06-11 | 江苏开璇智能科技有限公司 | Third harmonic drive fourth shaft rotary table with output brake |
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| JP2003065334A (en) * | 2002-06-13 | 2003-03-05 | Nsk Ltd | Hydraulic gas bearing |
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| CN103659288A (en) * | 2013-11-06 | 2014-03-26 | 西安理工大学 | Hydrostatic guide track |
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| CN206425813U (en) * | 2016-12-29 | 2017-08-22 | 西安理工大学 | A kind of swinging type liquid hydrostatic slideway |
| CN108119547A (en) * | 2017-12-22 | 2018-06-05 | 上海理工大学 | A kind of dynamic and static pressure cylinder bearing shafting and precision machine tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0304090A2 (en) * | 1987-08-20 | 1989-02-22 | Toyoda Koki Kabushiki Kaisha | Hydrostatically supporting device for slide |
| CN2040964U (en) * | 1988-11-23 | 1989-07-12 | 张学仁 | Bernoulli sealing device |
| JP2003065334A (en) * | 2002-06-13 | 2003-03-05 | Nsk Ltd | Hydraulic gas bearing |
| CN101625014A (en) * | 2009-08-03 | 2010-01-13 | 北京工业大学 | Static-pressure oil pad with damping flow channel oil chamber and damping sealing oil edge |
| CN201531527U (en) * | 2009-08-03 | 2010-07-21 | 北京工业大学 | Static pressure oil pad with damping flow passage oil cavity and damping type oil sealing edge |
| JP2013136108A (en) * | 2011-12-28 | 2013-07-11 | Jtekt Corp | Slide table device |
| CN203477071U (en) * | 2013-08-22 | 2014-03-12 | 一重集团绍兴重型机床有限公司 | Static-pressure oil cushion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112935851A (en) * | 2021-02-04 | 2021-06-11 | 江苏开璇智能科技有限公司 | Third harmonic drive fourth shaft rotary table with output brake |
| CN112935851B (en) * | 2021-02-04 | 2023-08-18 | 江苏开璇智能科技有限公司 | Third harmonic drive fourth-axis turntable with output brake |
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| CN109333077B (en) | 2021-01-15 |
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Effective date of registration: 20230516 Address after: No. 1000, Huayang Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province 215300 Patentee after: Jiangsu Gutian Automation Co.,Ltd. Address before: 710048 No. 5 Jinhua South Road, Shaanxi, Xi'an Patentee before: XI'AN University OF TECHNOLOGY |
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