CN204892986U - A main shaft structure for high precision machine tool - Google Patents
A main shaft structure for high precision machine tool Download PDFInfo
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- CN204892986U CN204892986U CN201520638611.9U CN201520638611U CN204892986U CN 204892986 U CN204892986 U CN 204892986U CN 201520638611 U CN201520638611 U CN 201520638611U CN 204892986 U CN204892986 U CN 204892986U
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- bearing
- main shaft
- machine tool
- periphery
- high precision
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Abstract
The utility model relates to a main shaft structure for high precision machine tool, including a casing that has the cavity, the main shaft runs through to be installed inside the cavity of casing, in in the cavity of casing a plurality of first bearings and second bearing are still connected respectively to the periphery of main shaft, lie in on the main shaft between the most inboard first bearing and second bearing the spacer ring is still cup jointed to the periphery of main shaft, in the both ends difference rigid coupling end cover of casing, in still install the sealing washer in the step groove of end cover inner circle department, still install the bearing at least and lock the trimmer between the periphery of the inner circle of an end cover and main shaft, fastener and main shaft rigid coupling are crossed to the bearing adjustment penton. The utility model discloses a main shaft structure has precision height, longe -lived advantage, its use of effectively satisfying high accuracy lathe, grinding machine and digit control machine tool, and the precision rigidity is good to has good waterproof nature.
Description
Technical field
The utility model relates to machine tool, particularly relates to a kind of main axle structure for high precision machine tools such as smooth turning lathe, grinding machine and Digit Control Machine Tools.
Background technology
At present, the existing problem not high for the main axle structure ubiquity precision of high precision machine tool, should be 0.005 ~ 0.010mm for diameter in the precision of the high-precision grinder main shaft of about 170, and for diameter about 170 high precision lathe spindle precision should at more than 0.020mm, and existing machine tool chief axis precision all cannot reach above-mentioned requirements.In addition existing machine tool chief axis due to bearing select unreasonable, cause poor spindle rigidity, existing main shaft adopts felt seal mode simultaneously, this sealing means is unsuitable for Long-Time Service, main axle structure inside is very easily made to enter cooling fluid, cause main axle structure internal bearings to be damaged, greatly reduce the service life of main shaft, and original spring sealed circle easily produces heating problem to spindle abrasion and for the increase of running moment.Last existing main axle structure assemble time cannot Timeliness coverage bearing install quality, the quality that bearing is installed could be determined after main axle structure all installs, and dismounting inconvenience.
Utility model content
The applicant is for above-mentioned existing issue, be studied improvement, a kind of main axle structure for high precision machine tool is provided, this main axle structure has the advantage that precision is high, the life-span is long, it effectively meets the use of smooth turning lathe, grinding machine and Digit Control Machine Tool, precision good rigidly, and there is good water proofing property.
The technical scheme that the utility model adopts is as follows:
A kind of main axle structure for high precision machine tool, comprise one with the housing of cavity, main shaft runs through the inside cavity being arranged on described housing, multiple clutch shaft bearing and the second bearing is also connected respectively, on main shaft between the clutch shaft bearing of inner side and the second bearing, be also socketed spacer ring in the periphery of described main shaft in the cavity of described housing, in the periphery of described main shaft; In the affixed end cap of the two ends of described housing difference, in the step groove at described end cap inner ring place, also sealing ring is installed, at least between the inner ring and the periphery of main shaft of an end cap, bearing locking trimmer is also installed, described bearing trimmer by securing member and main shaft affixed.
Its further technical scheme is:
Described housing is circular shell, along the circumferential direction evenly offers multiple threaded mounting hole in the periphery of described housing, the hold-down nut be spirally connected in described threaded mounting hole for compressing spacer ring;
Along the circumferential direction offer the first groove in the periphery of described main shaft, along the circumferential direction offer the second groove at the inwall of described housing, described first groove and the second groove to offer position corresponding each other;
Described clutch shaft bearing is angular contact ball bearing, and described second bearing is angular contact bearing, and each clutch shaft bearing abuts each other and is arranged on main shaft, and each second bearing also abuts each other and is arranged on main shaft;
Described sealing ring is skeleton rubber seal;
In the junction of described housing and end cap, in described end cap, go back mounting O-shaped sealing ring.
The beneficial effects of the utility model are as follows:
The utility model structure is simple, convenient disassembly, and it has the following advantages:
(1) mode by adopting bearing locking trimmer to replace original nut check bearing, nut check can be avoided to make the problem of matched bearings bias voltage, main shaft precise decreasing on the one hand, make main shaft after a long time use on the other hand, can, by the pretightning force regulating bearing locking trimmer to increase bearing, main shaft precision be made to keep optimum state.
(2) by adopting skeleton rubber seal to replace original felt seal, solve original spring sealed circle and the spindle heat generation problem caused is increased to the wearing and tearing of main shaft and running moment, adopt skeleton rubber seal that the running moment of main shaft is not increased, guarantee foreign, cooling fluid enter main shaft inside, substantially increase the main shaft life-span.
(3) the utility model adopts the mode that multi-joint high accuracy angular contact ball bearing and multi-joint high accuracy angular contact bearing coordinate, the rigidity of the main shaft of increase and bearing capacity.
(4) the utility model middle shell structure is simple, easy to process, the assembling of itself and main shaft is quick and convenient, assemble with housing again after main shaft and bearing assemble simultaneously, utilize the quality of this assembling mode energy Rapid Detection bearing, make the installation of main axle structure quick and convenient, guarantee the quality of each bearing, ensure that the service life of main axle structure.
(5) the utility model by being evenly arranged threaded mounting hole on housing, and lock spacer ring by hold-down nut, avoids the situation that the stressed rear generation rigidity of main shaft reduces.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Wherein: 1, main shaft; 101, the first groove; 2, sealing ring; 3, end cap; 301, step groove; 4, housing; 401, threaded mounting hole; 402, the second groove; 5, clutch shaft bearing; 6, spacer ring; 7, the second bearing; 8, bearing locking trimmer; 9, hold-down nut; 10, clamping screw; 11, O RunddichtringO.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described.
As shown in Figure 1, a kind of main axle structure for high precision machine tool comprises one with the housing 4 of cavity, housing 4 is circular shell, main shaft 1 runs through the inside cavity being arranged on housing 4, in the cavity of housing 4, multiple clutch shaft bearing 5 and the second bearing 7 is also connected respectively in the periphery of main shaft 1, clutch shaft bearing 5 is angular contact ball bearing, second bearing 7 is angular contact bearing, each clutch shaft bearing 5 abuts each other and is arranged on main shaft 1, each second bearing 7 also abuts each other and is arranged on main shaft 1, in the utility model, clutch shaft bearing 5 is 4, second bearing 7 is 3 (quantity of clutch shaft bearing 5 and the second bearing 7 adjusts according to practical condition).As shown in Figure 1, on main shaft 1 between the clutch shaft bearing 5 of inner side and the second bearing 7, be also socketed spacer ring 6 in the periphery of main shaft 1, multiple threaded mounting hole 401 is along the circumferential direction evenly offered in the periphery of housing 4, the hold-down nut 9 be spirally connected in threaded mounting hole 401 for compressing spacer ring 6, utilize hold-down nut 9 to lock spacer ring 6, avoid the situation that the stressed generation rigidity of main shaft 1 reduces.As shown in Figure 1, fix end cap 3 in the two ends of housing 4 respectively by clamping screw 10, in the step groove 301 at end cap 3 inner ring place, also install sealing ring 2, sealing ring 2 is skeleton rubber seal.At least between the inner ring and the periphery of main shaft 1 of an end cap 3, bearing locking trimmer 8 is also installed, bearing locking trimmer 8 is also affixed by clamping screw 10 and main shaft 1, utilize bearing locking trimmer 8 to replace original nut check easily to cause bearing bias voltage, cause main shaft precision to reduce situation, main shaft 1 in use after a period of time, can, by the pretightning force of bearing locking trimmer 8 (regulating the elasticity of bearing locking trimmer 8 pairs of bearings) increase to bearing, make main shaft 1 accuracy guarantee in optimum state.As shown in Figure 1, along the circumferential direction offer the first groove 101 in the periphery of main shaft 1, the inwall of housing 4 along the circumferential direction offer the second groove 402, first groove 101 and the second groove 402 to offer position corresponding each other.The grinding length offered for reducing housing 4, main shaft 1 of the first groove 101 first groove 101 and the second groove 402, when assembling clutch shaft bearing 5 and the second bearing 7, it is easier to assemble each bearing is assembled to the other end during from main shaft 1 one end simultaneously.As shown in Figure 1, in the junction of above-mentioned housing 4 and end cap 3, in end cap 3, go back mounting O-shaped sealing ring 11, O RunddichtringO 11 improve housing 4 and the sealing property of end cap 3, prevent main shaft 1 inside from entering foreign matter or cooling fluid.
Main axle structure of the present utility model is applied in numerically control grinder 3MK1410 workpiece spindle, through long-term test, numerically control grinder after improvement is beated by original precision 0.006mm and is reduced to≤0.004mm, main axle structure of the present utility model is applied in numerically control grinder 3MK1310B workpiece spindle, through long-term test, precision after improvement reaches 0.003mm, after main axle structure of the present utility model is applied to numerically control grinder 3MK1412, numerically control grinder main shaft stable accuracy is at below 0.002mm, equally the utility model is applied to 3MZ1310, in the working shaft of 3MK147 and 3MK145, through long-term test, its main shaft precision is all stabilized in 0.002-0.003.
More than describing is to explanation of the present utility model, and be not the restriction to utility model, the utility model limited range is see claim, and when without prejudice to basic structure of the present utility model, the utility model can do any type of amendment.
Claims (6)
1. the main axle structure for high precision machine tool, it is characterized in that: comprise one with the housing (4) of cavity, main shaft (1) runs through the inside cavity being arranged on described housing (4), in the cavity of described housing (4), in the periphery of described main shaft (1), also connect multiple clutch shaft bearing (5) and the second bearing (7) respectively, between the clutch shaft bearing (5) being positioned at inner side on main shaft (1) and the second bearing (7), be also socketed spacer ring (6) in the periphery of described main shaft (1); In the two ends of described housing (4) the affixed end cap of difference (3), in the step groove (301) at described end cap (3) inner ring place, sealing ring (2) is also installed, at least between the inner ring and the periphery of main shaft (1) of an end cap (3), bearing locking trimmer (8) is also installed, described bearing trimmer (8) by securing member and main shaft (1) affixed.
2. a kind of main axle structure for high precision machine tool as claimed in claim 1, it is characterized in that: described housing (4) is circular shell, along the circumferential direction evenly offer multiple threaded mounting hole (401) in the periphery of described housing (4), be spirally connected in described threaded mounting hole (401) for the hold-down nut (9) compressing spacer ring (6).
3. a kind of main axle structure for high precision machine tool as claimed in claim 1, it is characterized in that: along the circumferential direction offer the first groove (101) in the periphery of described main shaft (1), along the circumferential direction offer the second groove (402) at the inwall of described housing (4), described first groove (101) and the second groove (402) to offer position corresponding each other.
4. a kind of main axle structure for high precision machine tool as claimed in claim 1, it is characterized in that: described clutch shaft bearing (5) is angular contact ball bearing, described second bearing (7) is angular contact bearing, each clutch shaft bearing (5) abuts each other and is arranged on main shaft (1), and each second bearing (7) also abuts each other and is arranged on main shaft (1).
5. a kind of main axle structure for high precision machine tool as claimed in claim 1, is characterized in that: described sealing ring (2) is skeleton rubber seal.
6. a kind of main axle structure for high precision machine tool as claimed in claim 1, is characterized in that: in the junction of described housing (4) and end cap (3), in described end cap (3), go back mounting O-shaped sealing ring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638611.9U CN204892986U (en) | 2015-08-21 | 2015-08-21 | A main shaft structure for high precision machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520638611.9U CN204892986U (en) | 2015-08-21 | 2015-08-21 | A main shaft structure for high precision machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204892986U true CN204892986U (en) | 2015-12-23 |
Family
ID=54915198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520638611.9U Expired - Fee Related CN204892986U (en) | 2015-08-21 | 2015-08-21 | A main shaft structure for high precision machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204892986U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149620A (en) * | 2015-08-21 | 2015-12-16 | 无锡市三立轴承有限公司 | Main shaft structure for high-precision machine tool |
| CN105522471A (en) * | 2016-01-17 | 2016-04-27 | 浙江陀曼智造科技有限公司 | Super-fine machine spindle |
| CN106270575A (en) * | 2016-09-19 | 2017-01-04 | 广州市昊志机电股份有限公司 | A kind of high-precision numerical control walks heart machine tool chief axis |
-
2015
- 2015-08-21 CN CN201520638611.9U patent/CN204892986U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149620A (en) * | 2015-08-21 | 2015-12-16 | 无锡市三立轴承有限公司 | Main shaft structure for high-precision machine tool |
| CN105522471A (en) * | 2016-01-17 | 2016-04-27 | 浙江陀曼智造科技有限公司 | Super-fine machine spindle |
| CN105522471B (en) * | 2016-01-17 | 2018-06-05 | 浙江陀曼智造科技有限公司 | A kind of Superfinishing machine main shaft |
| CN106270575A (en) * | 2016-09-19 | 2017-01-04 | 广州市昊志机电股份有限公司 | A kind of high-precision numerical control walks heart machine tool chief axis |
| CN106270575B (en) * | 2016-09-19 | 2018-10-09 | 广州市昊志机电股份有限公司 | A kind of high-precision numerical control walks heart machine tool chief axis |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Spring Xishan Development Zone Xishan road 214101 Jiangsu city of Wuxi province No. 9 Patentee after: Wuxi three bearing Limited by Share Ltd Address before: Spring Xishan Development Zone Xishan road 214101 Jiangsu city of Wuxi province No. 9 Patentee before: Wuxi Sanli Bearings Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20200821 |