CN102825268A - Transmission main shaft structure of numerical control drilling and milling machine - Google Patents
Transmission main shaft structure of numerical control drilling and milling machine Download PDFInfo
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- CN102825268A CN102825268A CN2012103431556A CN201210343155A CN102825268A CN 102825268 A CN102825268 A CN 102825268A CN 2012103431556 A CN2012103431556 A CN 2012103431556A CN 201210343155 A CN201210343155 A CN 201210343155A CN 102825268 A CN102825268 A CN 102825268A
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- main shaft
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- ball bearing
- cylindrical roller
- thrust ball
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Abstract
The invention discloses a transmission main shaft structure of a numerical control drilling and milling machine, which comprises a main shaft, wherein the front end of the main shaft is provided with a double row cylindrical roller bearing, a first thrust ball bearing and a second thrust ball bearing; the double row cylindrical roller bearing and the first thrust ball bearing are arranged in a bearing pedestal; the bearing pedestal is fixed on a box; an internal spacer bush and an external spacer bush are arranged between the double row cylindrical roller bearing and the first thrust ball bearing; an adjustable pad is arranged between the double row cylindrical roller bearing and the main shaft; the second thrust ball bearing is fixed above the bearing pedestal through a sleeve and a locknut; and the rear end of the main shaft is provided with an angular contact ball bearing which is fixed on the box. The transmission main shaft structure of the numerical control drilling and milling machine not only can meet the requirements of high rigidity, high precision, heavy cut and the like, but also can reduce part processing difficulty and be widely used.
Description
Technical field
The present invention relates to a kind of numerical control drilling-milling bed, especially relate to a kind of numerical control drilling-milling bed transmission main shaft structure.
Background technology
The numerical control drilling-milling bed be a kind ofly integrate brill, mill, the process equipment of manufacturing procedure such as boring; Be to realize main shaft low-speed big boring function, this type lathe main transformer speed system adopt 4 grades manually or fluid drive add the main axle servo motor realize main shaft at different levels in the version of stepless speed regulations.Be mainly used in processing small holes and milling at a high speed, low speed is mainly used in the macropore drilling.
At present, general three angular contact ball bearings that adopt of the CNC milling machine transmission main shaft of same specification support, and its basic dynamic axial load rating is merely 63KN, and this main axle structure can not satisfy performance requirements such as the high rigidity, high accuracy, high-rate cutting of above-mentioned numerical control drilling-milling bed.In addition, this bearing is directly installed on the box body hole, and this box body hole end face run-out that just requires to contact with bearing requires in 0.005 μ m, and difficulty of processing is big, is difficult to guarantee the rotating accuracy of main shaft.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and can satisfy high rigidity, high accuracy, high-rate cutting performance requirement, can reduce the numerical control drilling-milling bed transmission main shaft structure of part processing difficulty again.
The technical scheme that the present invention solves its technical problem employing is: a kind of numerical control drilling-milling bed transmission main shaft structure; Comprise main shaft; The front end of said main shaft is provided with Biserial cylindrical roller bearing, first thrust ball bearing, second thrust ball bearing; Said Biserial cylindrical roller bearing, first thrust ball bearing are contained in the bearing block, and said bearing block is fixed on the casing, are provided with inner spacing collar and outer separator between the said Biserial cylindrical roller bearing and first thrust ball bearing; Be provided with adjusting pad between said Biserial cylindrical roller bearing and the main shaft, said second thrust ball bearing is fixed on the bearing block top through cover and locking nut; The rear end of said main shaft is provided with angular contact ball bearing, and said angular contact ball bearing is fixed on the casing.
Further, said Biserial cylindrical roller bearing is a P4 level Biserial cylindrical roller bearing.
Further, said bearing block also is connected through screw with the casing interference fits, and the upper surface of said bearing block does not contact with casing.
Further, said angular contact ball bearing is that contact angle is 25 ° a paired angular contact ball bearing.
Compared with prior art; The present invention has the following advantages: the combining structure of Biserial cylindrical roller bearing, first thrust ball bearing and second thrust ball bearing is adopted in the preceding support of main shaft; Biserial cylindrical roller bearing is used to improve the main shaft radial rigidity, the axial cutting force the when radial cutting force when bearing milling, thrust ball bearing are used for axial location and bear boring; The back support employing contact angle of main shaft is 25 ° a paired angular contact ball bearing; This collocation form increases substantially the integral stiffness of main shaft, can satisfy the requirement of high-rate cutting, thereby the brill that satisfies lathe mills function.In addition, the Biserial cylindrical roller bearing and first thrust ball bearing are contained in the bearing block, bearing block and case supports hole interference fits; And fuse through screw and casing; This structure can reduce the casing difficulty of processing, and the bearing block machining accuracy is easy to guarantee, thereby guarantees the rotating accuracy of main shaft.
In sum, the present invention can satisfy performance requirements such as high rigidity, high accuracy, high-rate cutting, can reduce the part processing difficulty again, and the scope of application is wider.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
With reference to accompanying drawing; Present embodiment comprises main shaft 7; The front end of said main shaft 7 is provided with Biserial cylindrical roller bearing 9, first thrust ball bearing 10, second thrust ball bearing 11; Said Biserial cylindrical roller bearing 9, first thrust ball bearing 10 are contained in the bearing block 4, and said bearing block 4 is fixed on the casing 1, are provided with inner spacing collar 6 and outer separator 8 between the said Biserial cylindrical roller bearing 9 and first thrust ball bearing 10; Be provided with adjusting pad 5 between said Biserial cylindrical roller bearing 9 and the main shaft 7, said second thrust ball bearing 11 through overlap 3 and locking nut 2 be fixed on bearing block 4 tops; The rear end of said main shaft 7 is provided with the angular contact ball bearing (not shown), and said angular contact ball bearing is fixed on the casing.
Said Biserial cylindrical roller bearing 9 is a P4 level Biserial cylindrical roller bearing.
Said bearing block 4 also is connected through screw with casing 1 interference fits, and the upper surface of said bearing block 4 does not contact with casing 1.
Said angular contact ball bearing is that contact angle is 25 ° a paired angular contact ball bearing.
Said adjusting pad 5 is used to adjust the radial clearance of Biserial cylindrical roller bearing 9.
The machining accuracy of the comparable casing 1 of the machining accuracy of said bearing block 4 is much higher, and difficulty of processing is little, can guarantee the synthesis precision of spindle assemblies.Present embodiment can satisfy performance requirements such as high rigidity, high accuracy, high-rate cutting, can reduce the part processing difficulty again.
Claims (4)
1. numerical control drilling-milling bed transmission main shaft structure; Comprise main shaft; It is characterized in that: the front end of said main shaft is provided with Biserial cylindrical roller bearing, first thrust ball bearing, second thrust ball bearing; Said Biserial cylindrical roller bearing, first thrust ball bearing are contained in the bearing block, and said bearing block is fixed on the casing, are provided with inner spacing collar and outer separator between the said Biserial cylindrical roller bearing and first thrust ball bearing; Be provided with adjusting pad between said Biserial cylindrical roller bearing and the main shaft, said second thrust ball bearing is fixed on the bearing block top through cover and locking nut; The rear end of said main shaft is provided with angular contact ball bearing, and said angular contact ball bearing is fixed on the casing.
2. numerical control drilling-milling bed transmission main shaft structure according to claim 1 is characterized in that: said Biserial cylindrical roller bearing is a P4 level Biserial cylindrical roller bearing.
3. numerical control drilling-milling bed transmission main shaft structure according to claim 1 and 2 is characterized in that: said bearing block also is connected through screw with the casing interference fits, and the upper surface of said bearing block does not contact with casing.
4. numerical control drilling-milling bed transmission main shaft structure according to claim 1 and 2 is characterized in that: said angular contact ball bearing is that contact angle is 25 ° a paired angular contact ball bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103431556A CN102825268A (en) | 2012-09-17 | 2012-09-17 | Transmission main shaft structure of numerical control drilling and milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103431556A CN102825268A (en) | 2012-09-17 | 2012-09-17 | Transmission main shaft structure of numerical control drilling and milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102825268A true CN102825268A (en) | 2012-12-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103431556A Pending CN102825268A (en) | 2012-09-17 | 2012-09-17 | Transmission main shaft structure of numerical control drilling and milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102825268A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464667A (en) * | 2013-09-05 | 2013-12-25 | 青岛宏达锻压机械有限公司 | Hybrid drive guide type electric screw press |
| CN103878397A (en) * | 2014-04-03 | 2014-06-25 | 上海克迈特精密机床有限公司 | High-speed high-precision mechanical main shaft |
| CN108386188A (en) * | 2018-04-13 | 2018-08-10 | 国家***第海洋研究所 | A kind of underwater robot can portable horizontal direction geological sampling drilling tool |
| CN112643065A (en) * | 2020-12-09 | 2021-04-13 | 重庆机床(集团)有限责任公司 | Main shaft structure of numerical control gear hobbing machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11188505A (en) * | 1997-12-26 | 1999-07-13 | Okuma Corp | Main spindle device of machine tool |
| CN200963682Y (en) * | 2006-10-20 | 2007-10-24 | 北京机电院高技术股份有限公司 | Principal axis bearing configuration structure for machine tool or processing center |
| CN201033353Y (en) * | 2007-06-06 | 2008-03-12 | 上海重型机床厂有限公司 | Numerical control heavy duty engine lathe head shaft fore bearing seat structure |
| CN201625788U (en) * | 2009-06-18 | 2010-11-10 | 上海宋氏企业发展有限公司 | Mainshaft of turning machine |
| CN202427970U (en) * | 2011-12-26 | 2012-09-12 | 黄山皖南机床有限公司 | Main shaft supporting structure for vertical knee-and-column milling machine |
| CN202726075U (en) * | 2012-09-17 | 2013-02-13 | 长沙金岭机床有限责任公司 | Gearbox spindle structure for numerical control drilling and milling machine |
-
2012
- 2012-09-17 CN CN2012103431556A patent/CN102825268A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11188505A (en) * | 1997-12-26 | 1999-07-13 | Okuma Corp | Main spindle device of machine tool |
| CN200963682Y (en) * | 2006-10-20 | 2007-10-24 | 北京机电院高技术股份有限公司 | Principal axis bearing configuration structure for machine tool or processing center |
| CN201033353Y (en) * | 2007-06-06 | 2008-03-12 | 上海重型机床厂有限公司 | Numerical control heavy duty engine lathe head shaft fore bearing seat structure |
| CN201625788U (en) * | 2009-06-18 | 2010-11-10 | 上海宋氏企业发展有限公司 | Mainshaft of turning machine |
| CN202427970U (en) * | 2011-12-26 | 2012-09-12 | 黄山皖南机床有限公司 | Main shaft supporting structure for vertical knee-and-column milling machine |
| CN202726075U (en) * | 2012-09-17 | 2013-02-13 | 长沙金岭机床有限责任公司 | Gearbox spindle structure for numerical control drilling and milling machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464667A (en) * | 2013-09-05 | 2013-12-25 | 青岛宏达锻压机械有限公司 | Hybrid drive guide type electric screw press |
| CN103464667B (en) * | 2013-09-05 | 2016-07-20 | 青岛宏达锻压机械有限公司 | A kind of mixed drive guide type electric screw press |
| CN103878397A (en) * | 2014-04-03 | 2014-06-25 | 上海克迈特精密机床有限公司 | High-speed high-precision mechanical main shaft |
| CN108386188A (en) * | 2018-04-13 | 2018-08-10 | 国家***第海洋研究所 | A kind of underwater robot can portable horizontal direction geological sampling drilling tool |
| CN112643065A (en) * | 2020-12-09 | 2021-04-13 | 重庆机床(集团)有限责任公司 | Main shaft structure of numerical control gear hobbing machine |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121219 |