CN203542356U - Outer circle grinding machine main shaft - Google Patents
Outer circle grinding machine main shaft Download PDFInfo
- Publication number
- CN203542356U CN203542356U CN201320601196.0U CN201320601196U CN203542356U CN 203542356 U CN203542356 U CN 203542356U CN 201320601196 U CN201320601196 U CN 201320601196U CN 203542356 U CN203542356 U CN 203542356U
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- CN
- China
- Prior art keywords
- main shaft
- bearing
- half shell
- cylindrical grinder
- housing
- 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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- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
The utility model provides an outer circle grinding machine main shaft, which comprises a main shaft, a casing, a bearing and a grinding wheel device, wherein the main shaft is arranged in the casing through the bearing, the front end of the main shaft is provided with the grinding wheel device, the bearing comprises a bearing outer layer and a bearing inner layer, the bearing outer layer is provided with a film throttler, and the bearing inner layer is provided with a small hole throttler. The outer circle grinding machine has the advantages that a structure of combining the small hole throttling and the film throttling is adopted, and the carrying capability of the main shaft is improved, so the main shaft can realize the stable operation under the high-speed rotating condition without any noise or vibration phenomenon; the function of the structure of the main shaft is enhanced, so a strong cutting process is adopted for the grinding in the production process, so the processing quality precision is stably improved, and in addition, the production efficiency is improved.
Description
Technical field
The utility model relates to grinding spindle, especially relates to a kind of cylindrical grinder main shaft.
Background technology
Bearing is indispensable vitals in various rotary machineries.According to friction in bearings different in kind, can be divided into sliding bearing and rolling bearing.Rolling bearing has relied on a series of advantages such as its production standard, practical succinct convenience to be widely used in machine, but rolling bearing also has its fatal drawback.Such as use roller bearing on the larger lathe of shock loading, its life-span is only 1～2 month, and what have is even shorter, brings great harm like this to production, because the fault of a certain link cannot normally be worked whole production line.
Along with the quick propelling of China's modernization of industry process, require machine to heavy duty, accurate, stable, the life-span is long and the future development of saving the energy.Aspect space flight and aviation, electric power, metallurgy, machinery manufacturing industry, extensively adopting the supporting structure of dynamic pressure, static pressure, dynamic and hydrostatic bearing.
Utility model content
The utility model object is for the existing above-mentioned technical problem of prior art, and a kind of cylindrical grinder main shaft is provided.
Realize above-mentioned purpose, the utility model proposes a kind of cylindrical grinder main shaft is provided, comprise main shaft, housing, bearing, grinding wheel unit, described main shaft is arranged in housing by bearing, described front-end of spindle is provided with grinding wheel unit, described bearing comprises bearing skin and bearing internal layer, and described bearing skin is provided with thin film restrictor, and described bearing internal layer is provided with orifice restriction device.
As preferably, described thin film restrictor comprises upper half shell and lower half shell, after together with upper half shell is fixedly assemblied in lower half shell, surround a cavity, and between the two, be provided with film, film is divided into upper oil cavitie and lower oil cavitie by the cavity in housing, is provided with separately the fuel feed hole and the oil outlet that communicate with corresponding oil pocket on upper half shell and lower half shell.
As preferably, described front-end of spindle is provided with height and rigidly fixes supporting construction.
As preferably, described housing bottom is provided with lathe mounting bracket.
As preferably, described rear-end of spindle is provided with motor.
Compared with prior art, the utility model beneficial effect is: the structure that adopts orifice restriction and film throttling to combine, improved the bearing capacity of main shaft, and make the main shaft all can even running under the situation of High Rotation Speed, without the phenomenon of any noise, vibration; Due to the enhancing of this main axle structure function, grinding has in process of production adopted high-rate cutting technique, not only makes crudy stable accuracy promote but also has improved production efficiency.
Accompanying drawing explanation
Fig. 1 is the structure chart of a kind of cylindrical grinder main shaft described in the utility model.
Fig. 2 is the structure chart of bearing described in the utility model.
The specific embodiment
Feature of the present utility model and advantage will be elaborated by reference to the accompanying drawings by embodiment.
As illustrated in fig. 1 and 2, a kind of cylindrical grinder main shaft, comprise main shaft 1, housing 2, bearing 3, grinding wheel unit 4, described main shaft 1 is arranged in housing 2 by bearing 3, described main shaft 1 front end is provided with grinding wheel unit 4, described bearing 3 comprises bearing outer 31 and bearing internal layer 32, and described bearing skin 31 is provided with thin film restrictor 5, and described bearing internal layer 32 is provided with orifice restriction device 6.Described thin film restrictor 5 comprises upper half shell 51 and lower half shell 52, after together with upper half shell 51 is fixedly assemblied in lower half shell 52, surround a cavity, and between the two, be provided with film 53, film 53 is divided into upper oil cavitie 54 and lower oil cavitie 55 by the cavity in housing, on upper half shell 51 and lower half shell 52, be provided with separately the fuel feed hole 56 and the oil outlet 57 that communicate with corresponding oil pocket, described main shaft 1 front end is provided with height and rigidly fixes supporting construction 7, described housing 2 bottoms are provided with lathe mounting bracket, and described main shaft 1 rear end is provided with motor.
Operation principle of the present utility model: upper oil cavitie 54 and lower oil cavitie 55 that oil supply system provides certain pressure oil to enter into thin film restrictor 5, the pressure differential and the external applied load that reach film 53 both sides balance each other, and make main shaft 1 have high static rigidity; During running, film 53 can produce dynamic pressure; Can greatly increase main shaft 1 running rigidity.
Specific embodiment described herein is only to the explanation for example of the utility model structure.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. a cylindrical grinder main shaft, comprise main shaft, housing, bearing, grinding wheel unit, it is characterized in that: described main shaft is arranged in housing by bearing, described front-end of spindle is provided with grinding wheel unit, described bearing comprises bearing skin and bearing internal layer, in described bearing skin, be provided with thin film restrictor, described bearing internal layer is provided with orifice restriction device.
2. a kind of cylindrical grinder main shaft as claimed in claim 1, it is characterized in that: described thin film restrictor comprises upper half shell and lower half shell, after together with upper half shell is fixedly assemblied in lower half shell, surround a cavity, and between the two, be provided with film, film is divided into upper oil cavitie and lower oil cavitie by the cavity in housing, is provided with separately the fuel feed hole and the oil outlet that communicate with corresponding oil pocket on upper half shell and lower half shell.
3. a kind of cylindrical grinder main shaft as claimed in claim 1, is characterized in that: described front-end of spindle is provided with height and rigidly fixes supporting construction.
4. a kind of cylindrical grinder main shaft as claimed in claim 1, is characterized in that: described housing bottom is provided with lathe mounting bracket.
5. a kind of cylindrical grinder main shaft as claimed in claim 1, is characterized in that: described rear-end of spindle is provided with motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320601196.0U CN203542356U (en) | 2013-09-27 | 2013-09-27 | Outer circle grinding machine main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320601196.0U CN203542356U (en) | 2013-09-27 | 2013-09-27 | Outer circle grinding machine main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203542356U true CN203542356U (en) | 2014-04-16 |
Family
ID=50460523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320601196.0U Expired - Fee Related CN203542356U (en) | 2013-09-27 | 2013-09-27 | Outer circle grinding machine main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203542356U (en) |
-
2013
- 2013-09-27 CN CN201320601196.0U patent/CN203542356U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20150927 |
|
| EXPY | Termination of patent right or utility model |