CN202804924U - High-speed electric spindle structure for machine tool - Google Patents
High-speed electric spindle structure for machine tool Download PDFInfo
- Publication number
- CN202804924U CN202804924U CN 201220310846 CN201220310846U CN202804924U CN 202804924 U CN202804924 U CN 202804924U CN 201220310846 CN201220310846 CN 201220310846 CN 201220310846 U CN201220310846 U CN 201220310846U CN 202804924 U CN202804924 U CN 202804924U
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- CN
- China
- Prior art keywords
- sleeve
- bearing
- gas cylinder
- rotating shaft
- main shaft
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model provides a high-speed electric spindle structure for a machine tool, which ensures that grinding fluid can not enter a bearing of an electric spindle, so that the bearing has low probability of being damaged and regular service of a rotating shaft is guaranteed. The high-speed electric spindle structure comprises an electric spindle, a sleeve and a water pipe, wherein the liquid outlet of the water pipe is sleeved into the inner hole at one end of a rotating shaft of the electric spindle through an adapter positioned in the sleeve; a cover plate and a front bearing cap are respectively arranged at the two ends of the sleeve; and the other end of rotating shaft is exposed outside the front bearing cap. The high-speed electric spindle structure is characterized in that the sleeve comprises a front sleeve and a rear sleeve, wherein the front sleeve is sleeved on the outer edge surface of the rear sleeve, a gas cylinder is sleeved at the front end of the rear sleeve, the inner hole at one end of the rotating shaft is sleeved into an internal through hole of the gas cylinder, and a bearing mounting cavity is formed on one side of the gas cylinder, which is close to the front bearing cap.
Description
Technical field
The utility model relates to the pivot structure technical field of lathe, is specially a kind of high-speed electric main shaft structure of lathe.
Background technology
The electric main axle structure of existing lathe, it is because the rotating shaft high speed rotating, need to cool off by grinding fluid, high-speed electric main shaft needs grinding fluid when grinding and optimal mode is conducted grinding fluid by spindle hole exactly, mesopore for high-speed main spindle leads to the cooling fluid difficult design at present, the situation that grinding fluid enters into the bearing of electric main shaft often occurs in it, so that bearing is vulnerable to damage, and then affects the normal operation of electric main shaft.
Summary of the invention
For the problems referred to above, the utility model provides a kind of high-speed electric main shaft structure of lathe, and it so that bearing is not fragile, guarantees the normal operation of rotating shaft so that grinding fluid can not enter into the bearing of electric main shaft.
A kind of high-speed electric main shaft structure of lathe, its technical scheme is such: it comprises electric main shaft, sleeve, water pipe, the liquid outlet of described water pipe is set in an end endoporus of the rotating shaft of described electric main shaft by adapter, described adapter is positioned at the inside of described sleeve, the two ends of described sleeve are respectively arranged with cover plate, front bearing retainer, the other end of described rotating shaft exposes to described front bearing retainer, it is characterized in that: described sleeve comprises front sleeve, rear sleeve, described front sleeve is set in the outer edge surface of described rear sleeve, the front end sleeve of described rear sleeve is equipped with gas cylinder, one end inner hole sleeve of described rotating shaft is loaded on the interior bone of described gas cylinder, described gas cylinder is provided with the bearing installation cavity near a side of described front bearing retainer, described interior bone is communicated with described bearing installation cavity, described rotating shaft is supported on described bearing installation cavity by bearing, described front sleeve, rear sleeve, be provided with high-pressure gas circuit on the gas cylinder, the inboard of described bearing installation cavity is provided with the annular air cavity groove, and described high-pressure gas circuit is communicated to described annular air cavity groove.
It is further characterized in that: the outer edge surface of described adapter is set with gland, the front outer surface cover of described gland is equipped with described gas cylinder, the rear end outer edge surface of described gland is set with described rear sleeve, be provided with the spring fitting groove between the anterior Inner edge face of described rear sleeve, the afterbody outer edge surface of gland, trimmer is mounted on the inner terminal of described spring fitting groove, spring one end is mounted on described trimmer, the outside of baffle ring is anchored on described rear sleeve, and the inboard inner ring surface of described baffle ring press-fits the other end in described spring;
Be provided with the linear bearing mounting groove between the binding face of described gas cylinder and described front sleeve, be provided with linear bearing in the described linear bearing mounting groove;
Described bearing is the Ceramic Balls angular contact bearing.
After adopting structure of the present utility model, because being set in the slit of an end endoporus of rotating shaft, adapter leads to the bearing installation cavity, and the inboard of bearing installation cavity is provided with the annular air cavity groove, high-pressure gas circuit is communicated to described annular air cavity groove, so that the high pressure gas in the high-pressure gas circuit is filled full annular air cavity groove, and then the cooling fluid that flows out in the water pipe is along slit flow during to bearing, blocked by the high pressure gas in the annular air cavity groove, so that cooling fluid can't enter bearing, finish the hermetic seal to bearing, it so that bearing is not fragile, guarantees the normal operation of rotating shaft so that grinding fluid can not enter into the bearing of rotating shaft.
Description of drawings
Fig. 1 is front view structural representation of the present utility model;
Fig. 2 is the installation partial enlarged drawing of annular air cavity groove of the present utility model.
The specific embodiment
See Fig. 1, Fig. 2, it comprises electric main shaft, sleeve, water pipe 2, the liquid outlet of water pipe 2 is set in an end endoporus of the rotating shaft 4 of electric main shaft by adapter 3, adapter 3 is positioned at the inside of sleeve, the two ends of sleeve are respectively arranged with cover plate 5, front bearing retainer 6, the other end of rotating shaft 4 exposes to front bearing retainer 6, sleeve comprises front sleeve 7, rear sleeve 8, front sleeve 7 is set in the outer edge surface of rear sleeve 8, the front end sleeve of rear sleeve 8 is equipped with gas cylinder 9, one end inner hole sleeve of rotating shaft 4 is loaded on the interior bone 10 of gas cylinder 9, gas cylinder 9 is provided with bearing installation cavity 11 near a side of front bearing retainer 6, interior bone 10 is communicated with bearing installation cavity 11, rotating shaft 4 is supported on bearing installation cavity 11 by bearing 12, bearing 12 is the Ceramic Balls angular contact bearing, front sleeve 7, rear sleeve 8, be provided with high-pressure gas circuit 13 on the gas cylinder 9, the inboard of bearing installation cavity 11 is provided with annular air cavity groove 14, and high-pressure gas circuit 13 is communicated to annular air cavity groove 14.
The outer edge surface of adapter 3 is set with gland 15, the front outer surface cover of gland 15 is equipped with gas cylinder 9, the rear end outer edge surface of gland 15 is set with rear sleeve 8, be provided with spring fitting groove 16 between the anterior Inner edge face of rear sleeve 8, the afterbody outer edge surface of gland 15, trimmer 17 is mounted on the inner terminal of spring fitting groove 16, spring 18 1 ends are mounted on trimmer 17, and the outside of baffle ring 19 is anchored on rear sleeve 8, and the inboard inner ring surface of baffle ring 19 press-fits in the other end of spring 18;
Be provided with linear bearing mounting groove 20 between the binding face of gas cylinder 9 and front sleeve 7, be provided with linear bearing 21 in the linear bearing mounting groove 20.
The anchor ring that exposes of rear sleeve 8 is provided with gas-tpe fitting 22, and gas-tpe fitting 22 is communicated with high-pressure gas circuit 13, water pipe 2 external waterway connectors 1.
Its operation principle is as follows: spring 18 is finished the bearing pre-tightened to linear bearing 21, and spring 18 is so that the bearing pre-fastening of linear bearing 21 is adjustable, and linear bearing 21 is guaranteed in the spindle processing process, during the spindle heat generation elongation, main shaft is stretched backward, and not to protracting, guarantees that the position of machined surface is unaffected.
Claims (4)
1. the high-speed electric main shaft structure of a lathe, it comprises electric main shaft, sleeve, water pipe, the liquid outlet of described water pipe is set in an end endoporus of the rotating shaft of described electric main shaft by adapter, described adapter is positioned at the inside of described sleeve, the two ends of described sleeve are respectively arranged with cover plate, front bearing retainer, the other end of described rotating shaft exposes to described front bearing retainer, it is characterized in that: described sleeve comprises front sleeve, rear sleeve, described front sleeve is set in the outer edge surface of described rear sleeve, the front end sleeve of described rear sleeve is equipped with gas cylinder, one end inner hole sleeve of described rotating shaft is loaded on the interior bone of described gas cylinder, described gas cylinder is provided with the bearing installation cavity near a side of described front bearing retainer, described interior bone is communicated with described bearing installation cavity, described rotating shaft is supported on described bearing installation cavity by bearing, described front sleeve, rear sleeve, be provided with high-pressure gas circuit on the gas cylinder, the inboard of described bearing installation cavity is provided with the annular air cavity groove, and described high-pressure gas circuit is communicated to described annular air cavity groove.
2. the high-speed electric main shaft structure of a kind of lathe according to claim 1, it is characterized in that: the outer edge surface of described adapter is set with gland, the front outer surface cover of described gland is equipped with described gas cylinder, the rear end outer edge surface of described gland is set with described rear sleeve, the anterior Inner edge face of described rear sleeve, be provided with the spring fitting groove between the afterbody outer edge surface of gland, trimmer is mounted on the inner terminal of described spring fitting groove, spring one end is mounted on described trimmer, the outside of baffle ring is anchored on described rear sleeve, and the inboard inner ring surface of described baffle ring press-fits the other end in described spring.
3. the high-speed electric main shaft structure of a kind of lathe according to claim 2 is characterized in that: be provided with the linear bearing mounting groove between the binding face of described gas cylinder and described front sleeve, be provided with linear bearing in the described linear bearing mounting groove.
4. the high-speed electric main shaft structure of a kind of lathe according to claim 3, it is characterized in that: described bearing is the Ceramic Balls angular contact bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310846 CN202804924U (en) | 2012-06-29 | 2012-06-29 | High-speed electric spindle structure for machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220310846 CN202804924U (en) | 2012-06-29 | 2012-06-29 | High-speed electric spindle structure for machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202804924U true CN202804924U (en) | 2013-03-20 |
Family
ID=47863867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220310846 Withdrawn - After Issue CN202804924U (en) | 2012-06-29 | 2012-06-29 | High-speed electric spindle structure for machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202804924U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717333A (en) * | 2012-06-29 | 2012-10-10 | 无锡机床股份有限公司 | High-speed electric main shaft structure of machine tool |
| WO2015100941A1 (en) * | 2013-12-31 | 2015-07-09 | 广州市昊志机电股份有限公司 | Internal grinding spindle |
-
2012
- 2012-06-29 CN CN 201220310846 patent/CN202804924U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717333A (en) * | 2012-06-29 | 2012-10-10 | 无锡机床股份有限公司 | High-speed electric main shaft structure of machine tool |
| CN102717333B (en) * | 2012-06-29 | 2014-06-25 | 无锡机床股份有限公司 | High-speed electric main shaft structure of machine tool |
| WO2015100941A1 (en) * | 2013-12-31 | 2015-07-09 | 广州市昊志机电股份有限公司 | Internal grinding spindle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130320 Effective date of abandoning: 20140625 |
|
| RGAV | Abandon patent right to avoid regrant |