CN203051487U - Lubricating oil path structure of hybrid bearing of grinding machine - Google Patents
Lubricating oil path structure of hybrid bearing of grinding machine Download PDFInfo
- Publication number
- CN203051487U CN203051487U CN 201220648885 CN201220648885U CN203051487U CN 203051487 U CN203051487 U CN 203051487U CN 201220648885 CN201220648885 CN 201220648885 CN 201220648885 U CN201220648885 U CN 201220648885U CN 203051487 U CN203051487 U CN 203051487U
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- hydrostatic bearing
- dynamic
- rack sleeve
- grinding machine
- throttling gap
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- Expired - Fee Related
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The utility model relates to a lubricating oil path structure of a hybrid bearing of a grinding machine. The structure comprises a main shaft sleeve and the hybrid bearing assembled in the main shaft sleeve, wherein the main shaft sleeve is provided with an oil inlet; the outer wall face of the hybrid bearing is provided with a thin film throttling gap communicated with the oil inlet; after the hybrid bearing is assembled in the main shaft sleeve, an oil path is formed between the inner wall face of the main shaft sleeve and the thin film throttling gap on the hybrid bearing; and the thin film throttling gap is 0.5mm-0.6mm deep and 4mm-6mm wide.
Description
Technical field
The utility model relates to a kind of grinding machine dynamic and hydrostatic bearing lubricant oil road structure.
Background technique
Dynamic and hydrostatic bearing is a kind of outer supply constant pressure oil, sets up static pressure carrying oil film in bearing, make the main shaft high pressure oil film that from start to stopping, suspending all the time, thus do not have wearing and tearing, long service life, starting power little, under the speed of extremely low (even being zero), also can use.That adopts vane pump and film throttling control oil circuit on the present axle grinding machine bed forms lubricating structure to dynamic and hydrostatic bearing, the shortcoming that it is main: difficulty is made in the monolithic film membrane throttling, increase manufacture cost, the easy greasy filth in film throttling 0.1mm gap stops up, easy cleaning does not need the personnel of specialized factory to solve.
Summary of the invention
The purpose of this utility model is to provide a kind of grinding machine dynamic and hydrostatic bearing lubricant oil road structure, and this practicality can overcome greasy filth stops up, not the technical problem of easy cleaning.
The technological scheme of goal of the invention of the present utility model is as follows:
Grinding machine dynamic and hydrostatic bearing lubricant oil road structure, comprise rack sleeve and be assemblied in dynamic and hydrostatic bearing in the rack sleeve, rack sleeve is provided with filler opening, the outer wall of described dynamic and hydrostatic bearing is provided with the film throttling gap that communicates with filler opening, after dynamic and hydrostatic bearing is assemblied in the rack sleeve, the internal face of rack sleeve and the film throttling gap on the dynamic and hydrostatic bearing form oil circuit, and the degree of depth in film throttling gap is 0.5-0.6mm, and the width in film throttling gap is 4-6mm.
Adopted such scheme, film throttling gap depth of the present utility model is 0.5mm-0.6mm, and width is 4-6mm, and it has the following advantages: (1) Machine Tool Electric Appliance alarm pressure reduces greasy filth and stops up, and cleans easily.(2) reduce cost dead time.(3) cleaning need not professional workforce and maintenance man's cooperation.(4) produced on-site rhythm is guaranteed, and can not influence production task.(5) avoided the fund of entrusting the professional workforce to need.(6) general maintenance man can grasp maintenance technique.(7) film throttling control oil channel structures is oversimplified.
Further, the filler opening on the rack sleeve connects a throttle valve by static pressure mill shafting oil pipe.By throttle valve adjustment oil circuit flow size, can reach the effect of film throttling control oil circuit fully, can make the high pressure oil film possess homogenization and good and vibration resistance, guaranteed that main shaft has very high running accuracy and smoothness of operation.
In sum, the lubricating structure that the utility model adopts the cellular type ring restrictor to connect with film throttling, pressure oil is entered produce enough big static pressure bearing capacity in the oil pocket, main shaft is suspended in the middle of the high pressure oil film, thereby overcome axle and dynamic and hydrostatic bearing wear phenomenon that the dry friction that occurs when the Hydrodynamic dynamic and hydrostatic bearing starts and stops causes, improved working life and the precision stability of main shaft.
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Description of drawings
Fig. 1 is structural representation of the present utility model;
In the accompanying drawing, 1 is rack sleeve, and 2 is dynamic and hydrostatic bearing, and 3 is filler opening, and 4 is the film throttling gap, and 5 are static pressure mill shafting oil pipe, and 6 is throttle valve, and 7 are the mill axle.
Embodiment
With reference to Fig. 1, grinding machine dynamic and hydrostatic bearing lubricant oil road structure of the present utility model comprises rack sleeve 1 and is assemblied in dynamic and hydrostatic bearing 2 in the rack sleeve.Rack sleeve is provided with filler opening 3, the outer wall of described dynamic and hydrostatic bearing 2 is provided with the film throttling gap 4 that communicates with filler opening, after dynamic and hydrostatic bearing is assemblied in the rack sleeve, the internal face of rack sleeve and the film throttling gap on the dynamic and hydrostatic bearing form oil circuit, and lubricant oil flows in film throttling gap 4.The degree of depth L in described film throttling gap is 0.5-0.6mm, and the width preferred value of stating the film throttling gap is 0.55mm, and the width in film throttling gap is 4-6mm, and the width preferred value in film throttling gap is 5mm.Filler opening 3 on the rack sleeve connects a throttle valve 6 by static pressure mill shafting oil pipe 5.
With reference to Fig. 1, take off mill axle 7 after, 2 pairs of film throttling gaps of dynamic and hydrostatic bearing are processed, switching to depth H with cutting knife is 0.55mm, and width L is 5mm, again dynamic and hydrostatic bearing 2 is pressed into rack sleeve 1, rack sleeve is carried out gap and scraping processing, guarantee that the precision of main shaft 7 is unaffected.Increase one-way throttle valve 6 control main shaft pressure flows at static pressure mill shafting oil pipe 5, reach the effect of film throttling control oil circuit fully, can make the high pressure oil film have homogenization and good and vibration resistance, guarantee that main shaft has very high running accuracy and smoothness of operation.
Claims (3)
1. grinding machine dynamic and hydrostatic bearing lubricant oil road structure, comprise rack sleeve and be assemblied in dynamic and hydrostatic bearing in the rack sleeve, rack sleeve is provided with filler opening, the outer wall of described dynamic and hydrostatic bearing is provided with the film throttling gap that communicates with filler opening, after dynamic and hydrostatic bearing is assemblied in the rack sleeve, the internal face of rack sleeve and the film throttling gap on the dynamic and hydrostatic bearing form oil circuit, it is characterized in that: the degree of depth in described film throttling gap is 0.5-0.6mm, and the width in film throttling gap is 4-6mm.
2. grinding machine dynamic and hydrostatic bearing lubricant oil road structure according to claim 1 is characterized in that: the filler opening on the described rack sleeve connects a throttle valve by static pressure mill shafting oil pipe.
3. grinding machine dynamic and hydrostatic bearing lubricant oil road structure according to claim 1 and 2, it is characterized in that: the width in described film throttling gap is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648885 CN203051487U (en) | 2012-11-30 | 2012-11-30 | Lubricating oil path structure of hybrid bearing of grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648885 CN203051487U (en) | 2012-11-30 | 2012-11-30 | Lubricating oil path structure of hybrid bearing of grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051487U true CN203051487U (en) | 2013-07-10 |
Family
ID=48734444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220648885 Expired - Fee Related CN203051487U (en) | 2012-11-30 | 2012-11-30 | Lubricating oil path structure of hybrid bearing of grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051487U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831718A (en) * | 2014-03-07 | 2014-06-04 | 佛山市南海区洪智机械厂 | Static-pressure grinding head |
| CN104632892A (en) * | 2013-11-11 | 2015-05-20 | 贵州大学 | Method for adjusting hybrid bearing and hybrid bearing |
| CN105817650A (en) * | 2015-01-23 | 2016-08-03 | 株式会社捷太格特 | Hydrostatic bearing apparatus and machine-tool main-spindle apparatus |
-
2012
- 2012-11-30 CN CN 201220648885 patent/CN203051487U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632892A (en) * | 2013-11-11 | 2015-05-20 | 贵州大学 | Method for adjusting hybrid bearing and hybrid bearing |
| CN104632892B (en) * | 2013-11-11 | 2018-04-27 | 贵州大学 | The adjusting method and dynamic and hydrostatic bearing of a kind of dynamic and hydrostatic bearing |
| CN103831718A (en) * | 2014-03-07 | 2014-06-04 | 佛山市南海区洪智机械厂 | Static-pressure grinding head |
| CN105817650A (en) * | 2015-01-23 | 2016-08-03 | 株式会社捷太格特 | Hydrostatic bearing apparatus and machine-tool main-spindle apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20131130 |