CN201950533U - Main shaft system for coreless grinding machine - Google Patents
Main shaft system for coreless grinding machine Download PDFInfo
- Publication number
- CN201950533U CN201950533U CN2010205015053U CN201020501505U CN201950533U CN 201950533 U CN201950533 U CN 201950533U CN 2010205015053 U CN2010205015053 U CN 2010205015053U CN 201020501505 U CN201020501505 U CN 201020501505U CN 201950533 U CN201950533 U CN 201950533U
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- CN
- China
- Prior art keywords
- main shaft
- floating
- oil
- bushings
- rotary bodies
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a main shaft system for a coreless grinding machine. The main shaft system comprises a high-rigid main shaft body and a separate alloy bearing body. A left upper floating bushing, a right upper floating bushing, a left lower rotary body and a right lower rotary body are arranged between the main shaft body and the bearing body. Radial oil inlet pores are arranged between two floating bushings and between floating bushings and the rotary bodies adjacent to each other. An oil return groove is arranged between two rotary bodies, and oil paths are arranged between the floating bushings and the rotary bodies. Oil from an oil feeding system flows into the main shaft body through three oil inlet pores, thereby forming a three-point dynamic pressure oil film system which communicates with the oil return groove. When two rotary bodies F1 and F2 are floating, two floating bushings H1 and H2 are actuated, thereby counteracting with each other. When the rotation speed reaches 60%, the gap between the two floating bushings H1 and H2 is automatic adjusted, so that the main shaft body 1 runs at extreme speed in the floating oil film no thicker than 1 micrometer.
Description
Technical field
The utility model relates to the grinding machine technical field, particularly a kind of pressure oil-film floating axis system of centerless grinder.
Background technology
Centerless grinder is as a kind of large-scale equipment for grinding, mainly relies on the rotation of emery wheel and guide wheel to finish grinding to cylindrical component, and grinding wheel spindle and guide wheel main shaft are turned round by motor drives, and the precision of main shaft itself has determined the machining accuracy of grinding machine.
At present centerless grinder axis system on the market mainly adopts the mechanical type rolling bearing, and the main shaft contact area is big, and temperature rise is higher, and precision and stability can reduce when machine running time was long, caused reduce the service life of main shaft, had much room for improvement.
The utility model content
For overcoming the deficiencies in the prior art, the utility model provides the axis system that increases a kind of service life.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of axis system of centerless grinder, comprise main shaft and bearing body, be respectively equipped with upper left floating bushing, upper right floating bushing, lower-left revolving body and bottom right revolving body between main shaft and the bearing body, be equipped with fuel feed hole radially between two floating bushings and between adjacent floating bushing and the revolving body, be provided with oil-recovery tank between two revolving bodies, be provided with asphalt channel between described two floating bushings and two revolving bodies and the main shaft.
Wherein, described two revolving bodies are integral structure.
The beneficial effects of the utility model are: the oil of oil supply system enters main shaft from three fuel feed holes, constitute bikini dynamic pressure oil film system and be communicated with oil-recovery tank, oil circuit forms the high pressure forced circulation, two floating bushings can be realized the adjustment of lever pressure automatic backlash, two revolving body place oil circuits form the oil float system, can reduce the function ratio of main shaft coefficient of friction, the main shaft contact area reduces, the cool cycles effect is good, can obtain comparatively ideal dynamic and static pressure effect, can significantly improve the rigidity of oil film, cause increase greatly the service life of axis system, can adapt to centerless grinder at a high speed, high-precision development need.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
With reference to shown in Figure 1, the utility model discloses a kind of axis system of centerless grinder, comprise high rigidity main shaft 1 and separate type alloy bearing body 2, be respectively equipped with upper left floating bushing H1 between main shaft 1 and the bearing body 2, upper right floating bushing H2, lower-left revolving body F1 and bottom right revolving body F2, wherein, upper left floating bushing H1 and upper right floating bushing H2 are axial symmetry, lower-left revolving body F1 and bottom right revolving body F2 axial symmetry, between two floating bushing H1 and the H2, be equipped with fuel feed hole 3 radially between adjacent floating bushing and the revolving body, be provided with oil-recovery tank 4 between two revolving body F1 and the F2, described two floating bushing H1 and H2, be equipped with asphalt channel between two revolving body F1 and F2 and the main shaft 1, described two revolving body F1 and F2 are integral structure, when the utility model uses, the oil of oil supply system enters main shaft from three fuel feed holes 3, constitute bikini dynamic pressure oil film system and be communicated with oil-recovery tank 4, oil circuit is at A1, A2, A3 and A4 form the high pressure forced circulation everywhere, upper left floating bushing H1 and upper right floating bushing H2 can realize the adjustment of lever pressure automatic backlash, lower-left revolving body F1 and revolving body F2 place, bottom right oil circuit form the oil float system, can reduce the function ratio of main shaft 1 coefficient of friction, when two revolving body F1 and the generation of F2 float function, two floating bushing H1 and H2 be action thereupon also, it is cancelled each other, again when rotating speed rises to 60%, two floating bushing H1 and H2 just produce the gap adjustment automatically, make main shaft 1 in 1um with interior unsteady oil film in very fast operation, because main shaft 1 contact area reduces, the cool cycles effect is good, can obtain comparatively ideal dynamic and static pressure effect, can significantly improve the rigidity of oil film, cause increase greatly the service life of axis system, can adapt to centerless grinder at a high speed, high-precision development need.
The foregoing description is illustrative principle of the present utility model and effect thereof only; and the embodiment of part utilization; for the person of ordinary skill of the art; under the prerequisite that does not break away from the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (2)
1. the axis system of a centerless grinder, comprise main shaft (1) and bearing body (2), it is characterized in that: be respectively equipped with upper left floating bushing (H1), upper right floating bushing (H2), lower-left revolving body (F1) and bottom right revolving body (F2) between main shaft (1) and the bearing body (2), be equipped with fuel feed hole (3) radially between two floating bushings (H1, H2) and between adjacent floating bushing and the revolving body, be provided with oil-recovery tank (4) between two revolving bodies (F1, F2), be provided with asphalt channel between described two floating bushings (H1, H2) and two revolving bodies (F1, F2) and the main shaft (1).
2. the axis system of a kind of centerless grinder according to claim 1 is characterized in that, described two revolving bodies (F1, F2) are integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205015053U CN201950533U (en) | 2010-08-24 | 2010-08-24 | Main shaft system for coreless grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205015053U CN201950533U (en) | 2010-08-24 | 2010-08-24 | Main shaft system for coreless grinding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201950533U true CN201950533U (en) | 2011-08-31 |
Family
ID=44494659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205015053U Expired - Fee Related CN201950533U (en) | 2010-08-24 | 2010-08-24 | Main shaft system for coreless grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201950533U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554718A (en) * | 2012-03-12 | 2012-07-11 | 无锡市启龙机床有限公司 | Main shaft supporting structure of centerless grinder for grinding valve lock groove |
| CN105673691A (en) * | 2016-03-30 | 2016-06-15 | 广西恒达电机科技有限公司 | Motor high-pressure oil film floating bearing |
-
2010
- 2010-08-24 CN CN2010205015053U patent/CN201950533U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102554718A (en) * | 2012-03-12 | 2012-07-11 | 无锡市启龙机床有限公司 | Main shaft supporting structure of centerless grinder for grinding valve lock groove |
| CN105673691A (en) * | 2016-03-30 | 2016-06-15 | 广西恒达电机科技有限公司 | Motor high-pressure oil film floating bearing |
| CN105673691B (en) * | 2016-03-30 | 2018-09-14 | 广西恒达电机科技有限公司 | A kind of motor high pressure oil film floating bearing |
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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: 20110831 Termination date: 20120824 |