CN107745296A - High-accuracy centreless grinding negative pressure guide rail - Google Patents
High-accuracy centreless grinding negative pressure guide rail Download PDFInfo
- Publication number
- CN107745296A CN107745296A CN201711133421.1A CN201711133421A CN107745296A CN 107745296 A CN107745296 A CN 107745296A CN 201711133421 A CN201711133421 A CN 201711133421A CN 107745296 A CN107745296 A CN 107745296A
- Authority
- CN
- China
- Prior art keywords
- oil
- negative pressure
- guide rail
- accuracy
- balladeur train
- 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
- 230000003068 static effect Effects 0.000 claims abstract description 16
- 239000002828 fuel tank Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 14
- 239000012530 fluid Substances 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 108
- 230000002706 hydrostatic effect Effects 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000036316 preload Effects 0.000 description 2
- 206010017389 Frotteurism Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/18—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work
- B24B5/22—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centreless means for supporting, guiding, floating or rotating work for grinding cylindrical surfaces, e.g. on bolts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
- B24B47/206—Drives or gearings; Equipment therefor relating to feed movement for centreless grinding machines; for machines comprising work supports, e.g. steady rests
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
A kind of high-accuracy centreless grinding negative pressure guide rail, it includes balladeur train, guide rail and oil supply system, and it, which is characterized by oil supply system, includes oil pump, fuel tank, negative pressure generator.Balladeur train is located at the upper end of guideway of grinding machine, there is static pressure chamber at guide rail both ends, oil inlet is provided with static pressure chamber, there is negative pressure cavity among guide rail, inlet port is provided with negative pressure cavity, negative pressure generator is connected with oil pump, the flow controller of negative pressure generator communicates with oil inlet, positive force feed is provided for it, the Oil sucking device of negative pressure generator is connected with inlet port, makes to produce stable negative pressure in negative pressure cavity.There is the stable carrying oil film of thickness between balladeur train and guide rail, be neat liquid friction between guide rail.Relative " vacuum " that the present invention is formed by negative pressure generator in guide rail center section, utilize the pressure of air, increase the weight of balladeur train, reduce influence of the load change to oil film, increase feed accuracy, oil film thickness maintains relatively uniform and thin state, increase guide rail rigidity, promotes slide block mechanism steadily to feed.
Description
Technical field
The present invention relates to machine tool field, is specifically related to a kind of negative pressure guide rail technology answering on high-accuracy centerless grinder
With.
Background technology
High-accuracy centreless grinding has very high requirement when 0 grade and I grade of roller is processed to the feed accuracy of balladeur train.
It is in the prior art to use hydrostatic slideway more.The operation principle of hydrostatic slideway be by the lubricating oil with certain pressure,
The oil pocket being input to through flow controller on guide pass, you can form carrying oil film, make to be in neat liquid Frotteurism between guide pass.
When grinding machine works, pressure oil enters each oil pocket of guide rail through flow controller, floats moving component, and guide pass is separated by oil film,
Oil in oil pocket constantly flows back to fuel tank by oil sealing side.When balladeur train is produced downwards a displacement by external load function, lead
Rail gap diminishes, and adds oil return resistance, raises the oil pressure in oil pocket, to balance external applied load.But when guide rail the depth of cut compared with
When big, load variable is larger, and oil film fluctuation is larger, i.e., hydrostatic slideway has the defects of oil film rigidity deficiency.For this industry skill
Art personnel in the oil inlet passage of track generally by increasing elastomer, to resist the oil film rigidity deficiency that load change is brought,
Such as 105108498 A of A, CN of CN 105108500.Above-mentioned design structure is complicated, and the effect to enhancing oil film rigidity is undesirable.
Oil film thickness is not easy to grasp simultaneously, and adjustment is difficult.
The content of the invention
To overcome deficiency of the prior art, a kind of bearing capacity of present invention offer is strong, and it is firm to significantly improve oil film
Degree, enhancing guide rail rigidity, the high-accuracy centreless grinding negative pressure guide rail for promoting slide block mechanism steadily to feed.
The technical solution adopted in the present invention is as follows：A kind of high-accuracy centreless grinding negative pressure guide rail, it include balladeur train, guide rail and
Oil supply system, it, which is characterized by oil supply system, includes oil pump, fuel tank, negative pressure generator, and balladeur train is located at the upper end of guideway of grinding machine, led
There is static pressure chamber at rail both ends, and oil inlet is provided with static pressure chamber, have negative pressure cavity among guide rail, inlet port is provided with negative pressure cavity, bear
Pressure generator is connected with oil pump, and the flow controller of negative pressure generator communicates with oil inlet, and positive force feed, negative pressure hair are provided for it
The Oil sucking device of raw device is connected with inlet port, makes to produce stable negative pressure in negative pressure cavity.There is thickness stable between balladeur train and guide rail
Carrying oil film, be neat liquid friction between guide rail.
The present invention is improved on the basis of existing hydrostatic slideway, by changing to guide rail and oil supply system
Enter, make the static pressure at guide rail both ends（Malleation）Chamber forms static pressure oil film, and upward support is produced to balladeur train, plays carrying, guide rail
Center section forms relative " vacuum ", plays suction-operated, increases the stability of balladeur train.Because the present invention is in guide rail center section shape
Into relative " vacuum ", using the pressure of air, increase the weight of balladeur train（That is vacuum preload）, load change is reduced to oil film
Influence, and then reduce the uneven stability of guide rail operation, increase feed accuracy, while it is relatively uniform also make it that oil film thickness maintains
And thin state, increase guide rail rigidity, promote slide block mechanism steadily to feed.
Negative pressure generator is connected with the oil inlet and inlet port of guide rail.Set by the Oil sucking device part of negative pressure generator
Pressure be 0.1-0.08bar.The input pressure of negative pressure generator is 20-25bar.The volume control device portion of negative pressure generator
Divide and be connected with guide rail oil inlet, volume control device controls oil inlet quantity, the Oil sucking device portion of negative pressure generator according to feedback
Divide connection inlet port, Oil sucking device forms " vacuum " according to feedback in guide rail center section, and siphons away unnecessary oil mass, flows back to
Fuel tank.The thickness of oil film is 0.01-0.03mm.Due to the vacuum preload of negative pressure generator, oil film is influenceed small, oil by load change
Film thickness is stable, and rigidity is strong.
Have an oil seal ring in the surrounding of negative pressure oil pocket, oil seal ring is a circle groove, have in oil seal ring auxiliary oil sealing oil inlet with
Oil inlet pipe connects, and makes to be covered with fluid in oil seal ring, prevents extraneous air from entering among guide rail, makes oil film pressure stable, oil film is firm
Property is good.The input pressure for aiding in oil sealing oil inlet is 1.2-1.5bar.
Relative " vacuum " that the present invention is formed by negative pressure generator in guide rail center section, using the pressure of air, increase
Add the weight of balladeur train, reduce influence of the load change to oil film, and then reduce the uneven stability of guide rail operation, increase feeding essence
Degree, while also cause oil film thickness to maintain relatively uniform and thin state, increase guide rail rigidity, promote slide block mechanism steadily to enter
Give.
Brief description of the drawings
Fig. 1 is the operation principle schematic diagram of the present invention
Fig. 2 is the oil circuit schematic diagram of the guide rail of the present invention
Fig. 3 is A-A（Oil inlet）Profile
Fig. 4 is B-B（Inlet port）Profile
Fig. 5 is C-C（Aid in oil sealing oil inlet）Profile
Wherein：The oil canal of the oil seal ring 23 of 1 static pressure chamber, 11 oil inlet, 13 plug, 2 negative pressure cavity, 21 inlet port 22 auxiliary oil sealing oil inlet 24
The oil pump 8 of 25 62 Oil sucking device of auxiliary oil sealing oil inlet oil canal 3 balladeur train, 4 guide rail, 5 oil film, 6 negative pressure generator, 61 flow controller 7
Fuel tank.
Embodiment
The present invention is described in detail with reference to view, cited embodiment can make this professional technology people
Member more understands the present invention, but the invention is not limited in any way.
As Figure 1-5, a kind of high-accuracy centreless grinding negative pressure guide rail, carried out on the basis of existing hydrostatic slideway
Improve, by being improved to guide rail and oil supply system, it includes balladeur train 3, guide rail 4 and oil supply system, and oil supply system includes oil
Pump 7, fuel tank 8, negative pressure generator 6, balladeur train are inverted u-shaped, ride over the upper end of guideway of grinding machine 4, grinding machine both sides guide rail parallel arrangement
There is static pressure（Malleation）Chamber 1, negative pressure cavity 2, static pressure（Malleation）Chamber 1 is located at the both ends of guide rail, shares four static pressure chambers 1, each static pressure
（Malleation）Oil inlet 11 is provided with chamber 1, negative pressure cavity 2 is located among guide rail, shares two, suction is provided with each negative pressure cavity 2
Hydraulic fluid port 21.Negative pressure generator 6 is connected with oil pump, and the flow controller 61 of negative pressure generator is connected with 4 oil inlets 11 respectively,
Positive force feed is provided for it, flow controller 61 controls the oil inlet quantity of each oil inlet 11 according to feedback；The lower section of inlet port 21
There is the oil canal 24 of insertion, the Oil sucking device 62 of negative pressure generator communicates with one end of oil canal, so as to be connected with inlet port 21,
Oil sucking device 62 forms " vacuum " according to feedback in guide rail center section, and siphons away unnecessary oil mass, flows back to fuel tank 8, leads to oil
The other end plug 13 in road 24 seals.Pressure set by the Oil sucking device part of negative pressure generator is 0.1-0.08bar, most
It is preferred that being selected as 0.08bar, the input pressure of negative pressure generator is 20-25bar, and 25bar is labeled as in figure.
The static pressure at both ends（Malleation）Chamber 1 forms static pressure oil film 5, and upward static pressure support is produced to balladeur train 3, carrying is played and makees
With the center section of guide rail 4 forms relative " vacuum ", plays suction-operated（Its principle is as shown in Figure 1）, downward negative pressure is presented and inhales
It is attached, increase the stability of balladeur train 3.Due to relative " vacuum " that the present invention is formed in the center section of guide rail 4, the pressure of air is utilized
By force, increase the weight of balladeur train 3, reduce influence of the load change to oil film 5, and then reduce the uneven stability of guide rail operation, increase
Feed accuracy.Simultaneously by vacuum compression, oil film thickness is also caused to maintain relatively uniform and thin state, increase guide rail is firm
Property, promote slide block mechanism steadily to feed.There are the stable carrying oil film 5 of thickness, the thickness control of oil film between balladeur train 3 and guide rail 4
System is neat liquid friction between 0.01-0.03mm, between guide rail.There is oil seal ring 22 in the surrounding of negative pressure oil pocket, oil seal ring is
One circle groove, groove medium design has auxiliary oil sealing oil inlet 23, same to aid in the lower section of oil sealing oil inlet 23 also to have the auxiliary of insertion
Help the oil canal 25 of oil sealing oil inlet, the oil canal 25 of auxiliary oil sealing oil inlet connects in-line in addition, oil canal it is another
End is also to be sealed with plug 13, and the input pressure of auxiliary oil sealing oil inlet is 1.2-1.5bar, makes to be covered with fluid in oil seal ring, is prevented
Only extraneous air enters among guide rail.Different oil canals is not interfered each other, can be designed disconnected with guide pass different height
On face.
The embodiment of the present invention is above are only, but the design concept of the present invention is not limited thereto, it is all to utilize this
Conceive the change that unsubstantiality is carried out to the present invention, the behavior for invading the scope of the present invention all should be belonged to.
Claims (7)
1. a kind of high-accuracy centreless grinding negative pressure guide rail, it includes balladeur train, guide rail and oil supply system, it is characterised in that oil supply system bag
Oil pump, fuel tank, negative pressure generator are included, balladeur train is located at the upper end of guideway of grinding machine, and there is static pressure chamber at guide rail both ends（1）, set in static pressure chamber
It is equipped with oil inlet（11）, have negative pressure cavity among guide rail（2）, inlet port is provided with negative pressure cavity（21）, negative pressure generator（6）With oil
Pump is connected, the flow controller of negative pressure generator（61）Respectively with four oil inlets（11）Communicate, provide positive force feed for it, bear
Press the Oil sucking device of generator（62）With inlet port（21）Connection, in balladeur train（3）With guide rail（4）Between have the stable carrying of thickness
Oil film（5）, it is neat liquid friction between guide rail.
A kind of 2. high-accuracy centreless grinding negative pressure guide rail according to claim 1, it is characterised in that：The thickness of oil film is
0.01-0.03mm。
A kind of 3. high-accuracy centreless grinding negative pressure guide rail according to claim 2, it is characterised in that：The oil-feed of negative pressure generator
Force pressure is 20-25bar.
A kind of 4. high-accuracy centreless grinding negative pressure guide rail according to claim 2, it is characterised in that：The oil suction of negative pressure generator
Pressure set by device part is 0.1-0.08bar.
A kind of 5. high-accuracy centreless grinding negative pressure guide rail according to claim 3, it is characterised in that：The oil suction of negative pressure generator
Pressure set by device part is 0.08bar.
A kind of 6. high-accuracy centreless grinding negative pressure guide rail according to claim 1, it is characterised in that：In the surrounding of negative pressure oil pocket
There is oil seal ring（22）, oil seal ring is a circle groove, has auxiliary oil sealing oil inlet in oil seal ring（23）It is connected with oil inlet pipe, makes oil sealing
It is covered with fluid in ring, prevents extraneous air from entering among guide rail.
A kind of 7. high-accuracy centreless grinding negative pressure guide rail according to claim 6, it is characterised in that：Aid in oil sealing oil inlet
Input pressure is 1.2-1.5bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133421.1A CN107745296A (en) | 2017-11-16 | 2017-11-16 | High-accuracy centreless grinding negative pressure guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133421.1A CN107745296A (en) | 2017-11-16 | 2017-11-16 | High-accuracy centreless grinding negative pressure guide rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107745296A true CN107745296A (en) | 2018-03-02 |
Family
ID=61251150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711133421.1A Pending CN107745296A (en) | 2017-11-16 | 2017-11-16 | High-accuracy centreless grinding negative pressure guide rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107745296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917259A (en) * | 2021-03-29 | 2021-06-08 | 华辰精密装备（昆山）股份有限公司 | Negative pressure adsorption static pressure support guide rail of machining tool, cylindrical grinding machine comprising same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040057639A1 (en) * | 2002-07-18 | 2004-03-25 | Juergen Roeders | Active vibration damping in a machine tool |
| US20050252722A1 (en) * | 2002-03-05 | 2005-11-17 | Futoshi Kosugi | Rolling bearing lubricating method and device |
| CN101549460A (en) * | 2009-05-12 | 2009-10-07 | 东华大学 | No-drifting high accurate open type static pressure guide rail |
| CN104308561A (en) * | 2014-09-19 | 2015-01-28 | 井冈山大学 | Static pressure guide rail oil film thickness feedback compensation device |
| CN105108498A (en) * | 2015-08-24 | 2015-12-02 | 湖南长河机械有限公司 | Hydrostatic guideway |
| JP2016048106A (en) * | 2014-08-28 | 2016-04-07 | 株式会社ナガセインテグレックス | Static pressure bearing device |
| CN207480254U (en) * | 2017-11-16 | 2018-06-12 | 福建达宇重型数控机床有限公司 | High-accuracy centreless grinding negative pressure guide rail |
-
2017
- 2017-11-16 CN CN201711133421.1A patent/CN107745296A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050252722A1 (en) * | 2002-03-05 | 2005-11-17 | Futoshi Kosugi | Rolling bearing lubricating method and device |
| US20040057639A1 (en) * | 2002-07-18 | 2004-03-25 | Juergen Roeders | Active vibration damping in a machine tool |
| CN101549460A (en) * | 2009-05-12 | 2009-10-07 | 东华大学 | No-drifting high accurate open type static pressure guide rail |
| JP2016048106A (en) * | 2014-08-28 | 2016-04-07 | 株式会社ナガセインテグレックス | Static pressure bearing device |
| CN104308561A (en) * | 2014-09-19 | 2015-01-28 | 井冈山大学 | Static pressure guide rail oil film thickness feedback compensation device |
| CN105108498A (en) * | 2015-08-24 | 2015-12-02 | 湖南长河机械有限公司 | Hydrostatic guideway |
| CN207480254U (en) * | 2017-11-16 | 2018-06-12 | 福建达宇重型数控机床有限公司 | High-accuracy centreless grinding negative pressure guide rail |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112917259A (en) * | 2021-03-29 | 2021-06-08 | 华辰精密装备（昆山）股份有限公司 | Negative pressure adsorption static pressure support guide rail of machining tool, cylindrical grinding machine comprising same |
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| 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180302 |