CN203791641U - Spindle of numerically-controlled lathe - Google Patents
Spindle of numerically-controlled lathe Download PDFInfo
- Publication number
- CN203791641U CN203791641U CN201420075679.6U CN201420075679U CN203791641U CN 203791641 U CN203791641 U CN 203791641U CN 201420075679 U CN201420075679 U CN 201420075679U CN 203791641 U CN203791641 U CN 203791641U
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- CN
- China
- Prior art keywords
- spindle
- bearing
- numerically
- controlled lathe
- adjusting nut
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- Expired - Fee Related
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Abstract
The utility model discloses a spindle of a numerically-controlled lathe. The spindle of the numerically-controlled lathe comprises a spindle body, a spindle box, a front bearing and a rear bearing and is characterized in that the front bearing is located in the spindle box and arranged at the front end of the spindle body, an adjusting nut is arranged at the front end of the front bearing, the rear bearing is arranged at the rear end of the spindle body, a key groove is formed in the rear end of the front bearing, and a middle bearing is arranged in the portion, located in the middle of the spindle body, of the rear end of the key groove. According to the spindle of the numerically-controlled lathe, three-point support is adopted, the span is reasonable, and stability is good; the adjusting nut is arranged, and therefore the bearing clearance is easy to adjust; the key groove is arranged near the middle of the spindle body, and a spindle gear can be installed to increase output power; the spindle of the numerically-controlled lathe has the advantages of being convenient to disassemble and assemble, high in machining precision, and the like.
Description
Technical field
The utility model relates to field of machine tool equipment, specifically a kind of spindle of numerical control lathe.
Background technology
The spindle of numerical control lathe of prior art is mostly major axis, and two ends are by bearings, and this structure dismounting inconvenience is difficult to ensure the machining accuracy of workbench, and, install and use procedure in, gap of main reinforcement is inconvenient to adjust; In addition, because the distance between bearings at both ends is longer, at machining large workpiece, while bearing larger load, larger axial thrust is very easily accelerated the wearing and tearing of bearings at both ends, the coaxiality deviation in bearings at both ends hole is further increased, cause machine tool chief axis to run well, poor stability, is difficult to reach the required requirement on machining accuracy of workpiece.
Summary of the invention
The purpose of this utility model is to provide a kind of spindle of numerical control lathe, and this spindle of numerical control lathe has easy accessibility, bearing clearance adjustment is easy, and power output is large, the feature that stationarity is good.
The technical scheme in the invention for solving the technical problem is: spindle of numerical control lathe, comprise main shaft, main spindle box, fore bearing and rear bearing, described fore bearing is positioned at main spindle box, and be located at front-end of spindle, front end at described fore bearing is provided with adjusting nut, rear bearing is located at the rear end of described main shaft, and the rear end of fore bearing is provided with a keyway, it is characterized in that: keyway rear end is positioned at main shaft middle part and is provided with intermediate bearing.
As preferred structure of the present utility model, described intermediate bearing is needle thrust bearing.
As preferred structure of the present utility model, described adjusting nut is provided with screw.
The beneficial effects of the utility model are: this spindle of numerical control lathe adopts supported at three point, has adopted needle thrust bearing, has increased thrust, and span is reasonable, good stability; Be provided with adjusting nut, bearing clearance adjustment is easy; Being provided with keyway near main shaft centre position place, mainshaft gear can be installed, to increase power output, there is easy accessibility, machining accuracy high.
brief description of the drawings:
Fig. 1 is structural representation of the present utility model;
In figure: 1. main shaft, 2. main spindle box, 3. fore bearing, 4. rear bearing, 5. keyway, 6. intermediate bearing, 7. adjusting nut, 8. screw.
Detailed description of the invention
With reference to Figure of description, the utility model is described in further detail;
As shown in Figure 1, spindle of numerical control lathe, comprises main shaft 1, main spindle box 2, fore bearing 3 and rear bearing 4, and described fore bearing 3 is positioned at main spindle box 2, and is located at main shaft 1 front end; Rear bearing 4 is located in described main spindle box 2, is located at the rear end of main shaft 1, and the rear end of fore bearing 3 is provided with a keyway 5, can be used for installing mainshaft gear on described keyway 5, by setting up mainshaft gear, this main shaft 1 output torque is increased, and power output is high.
Keyway 5 rear ends are positioned at main shaft 1 middle part and are provided with intermediate bearing 6, described intermediate bearing 6 adopts needle thrust bearing, reach wear-resisting effect, fore bearing 3 is main support, adopts two angular contact ball bearings, make it increase bearing capacity, rear bearing 4 is positioned at the end that moves about of main shaft 1, adopts cylinder roller bearing, and this structure span is reasonable, good rigidly, bearing capacity is large.
The present embodiment is provided with adjusting nut 7 at the front end of fore bearing 3, and described adjusting nut 7 is provided with screw 8, and described screw 8 is used for preventing that adjusting nut 7 is loosening; Preferably, be equipped with to adjust the adjusting nut 7 of bearing axial clearance in the front end of rear bearing 4 and intermediate bearing 6 corresponding positions.
The beneficial effects of the utility model are: this spindle of numerical control lathe adopts supported at three point, has adopted needle thrust bearing, has increased thrust, and span is reasonable, good stability; Be provided with adjusting nut, bearing clearance adjustment is easy; Being provided with keyway near main shaft centre position place, mainshaft gear can be installed, to increase power output, there is easy accessibility, machining accuracy high.
Except technical characterictic described in description, all those skilled in the art known technologies not.
Claims (3)
1. spindle of numerical control lathe, comprise main shaft (1), main spindle box (2), fore bearing (3) and rear bearing (4), described fore bearing (3) is positioned at main spindle box (2), and be located at main shaft (1) front end, be provided with adjusting nut (7) at the front end of described fore bearing (3), rear bearing (4) is located at the rear end of described main shaft (1), and the rear end of fore bearing (3) is provided with a keyway (5), it is characterized in that: keyway (5) rear end is positioned at main shaft (1) middle part and is provided with intermediate bearing (6).
2. spindle of numerical control lathe according to claim 1, is characterized in that: described intermediate bearing (6) is needle thrust bearing.
3. spindle of numerical control lathe according to claim 1, is characterized in that: described adjusting nut (7) is provided with screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075679.6U CN203791641U (en) | 2014-02-21 | 2014-02-21 | Spindle of numerically-controlled lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420075679.6U CN203791641U (en) | 2014-02-21 | 2014-02-21 | Spindle of numerically-controlled lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203791641U true CN203791641U (en) | 2014-08-27 |
Family
ID=51373910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420075679.6U Expired - Fee Related CN203791641U (en) | 2014-02-21 | 2014-02-21 | Spindle of numerically-controlled lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203791641U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325158A (en) * | 2014-10-28 | 2015-02-04 | 蒋瑾 | Machine tool transmission shaft provided with auxiliary supporter |
-
2014
- 2014-02-21 CN CN201420075679.6U patent/CN203791641U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104325158A (en) * | 2014-10-28 | 2015-02-04 | 蒋瑾 | Machine tool transmission shaft provided with auxiliary supporter |
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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: 20140827 Termination date: 20190221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |