CN2644055Y - Adjustable prefastening machanism of electric main axle - Google Patents
Adjustable prefastening machanism of electric main axle Download PDFInfo
- Publication number
- CN2644055Y CN2644055Y CN 03277387 CN03277387U CN2644055Y CN 2644055 Y CN2644055 Y CN 2644055Y CN 03277387 CN03277387 CN 03277387 CN 03277387 U CN03277387 U CN 03277387U CN 2644055 Y CN2644055 Y CN 2644055Y
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- CN
- China
- Prior art keywords
- bearing
- main shaft
- electric main
- sleeve
- spring
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to machinery driving field, in particular to an adjusting mechanism which can adjust pretightening force between an adjusting shaft and a bearing. In technical proposal of the utility model, the end part of an electric main shaft has a tension bar; the external part of the bearing has a bearing brace. A linear bearing is arranged between the bearing brace and a bushing. The bottom of the tension bar has a chassis and the end surface of the chassis is connected with the bearing brace. The tension bar is connected with a spring brace through an adjusting nut. A spring is arranged between the internal end surfaces of the spring brace and the bushing. Through adding an adjustable tightening force mechanism between the electric main shaft and the muff socket, the utility model enables the electric main shaft to suitable for a plurality of rotating speeds; therefore, the application range is enlarged and the service life is prolonged.
Description
Technical field
The utility model relates to mechanical transmission fields, refers in particular to a kind of controlling mechanism that is used to regulate the pretightening force between electric main shaft and bearing.
Background technique
The electricity main shaft should be different with pretightening force between bearing at a high speed with low speed rotation the time.Usually when high speed, pretightening force should suitably lower, to reduce bearing load; When low speed and heavy cut, then should strengthen pretightening force, to improve the rigidity of electric main shaft.In the prior art, the Placement of electric main shaft and bearing as shown in Figure 1: 1 in electric main shaft 6 and sleeve utilize bearing 2 to interconnect, and the spring 4 that plays the pretension effect utilizes spring seat 5 to be installed on the inboard of bearing, and 3 among the figure is locking nut.The defective of this structure is that pretightening force is non-adjustable, utilizes transition fit between bearing and sleeve, and rigidity is poor, and especially electric main shaft is stuck because of thermal stretching easily.
The model utility content
The purpose of this utility model is to design a kind of adjustable pre-tightening mechanism of electric main shaft, by the mechanism of a preload adjustable is set between electric main shaft and sleeve, make electric main shaft can adapt to various rotating speed, thereby enlarged Applicable scope, prolonged working life.
According to scheme provided by the utility model, bearing is installed in end at electric main shaft, there is bearing support outside at bearing, the left end of bearing support inwardly shrinks, encase bearing outer ring after forming step, between bearing support and sleeve, linear bearing is set, pull bar utilizes the chassis of its bottom to be connected with bearing support, on pull bar, utilize adjusting nut to connect spring seat, right side at sleeve is provided with the part that expands outwardly, form the end face step at sleeve lining, spring seat is positioned at the expansion of sleeve, between the step end face of spring seat and sleeve spring is set.
The external diameter on pull bar chassis is less than the external diameter of linear bearing.
The utility model has the advantages that: 1, bearing pre-fastening is adjustable, and easy to adjust and simple, for electric main shaft, when low speed, heavy cut, can pass through adjusting nut, adjusts the pretightening force of spring, to strengthen the pretightening force of bearing, improves the rigidity of electric main shaft; When electric main shaft is in high speed rotating, can suitably reduce pretightening force, to reduce bearing load, prolong the working life of electric main shaft, thereby the high speed performance of electric main shaft is not fully exerted.2, adopt linear bearing after, making between bearing support and sleeve can interference fit, further improves the rigidity of electric main shaft, then need not interference fit between bearing and electric main shaft, avoid electric main shaft stuck because of thermal stretching.
Description of drawings
Fig. 1 is original pre-tightening mechanism figure.
Fig. 2 is a structural drawing of the present utility model.
Embodiment
As shown in Figure 2: bearing 2 is installed in the end at electric main shaft 6, in the outside of bearing 2 bearing support 10 is arranged, the left end of bearing support 10 inwardly shrinks, encase the outer ring of bearing 2 behind the formation step, between the sleeve 1 of bearing support 10 and its outside, linear bearing 9 is set, pull bar 7 utilizes the chassis 11 of its bottom to be connected with bearing support 10, on pull bar 7, utilize adjusting nut 8 to connect spring seat 5, right side at sleeve 1 is provided with the part that expands outwardly, form the end face step at sleeve 1 inwall, spring seat 5 is positioned at the expansion of sleeve 1, between the step end face of spring seat 5 and sleeve 1 spring 4 is set, and the external diameter on pull bar chassis 11 is less than the external diameter of linear bearing 9.
When needs are adjusted pretightening force, rotate adjusting nut 8, pull bar 7 is moved right, driving bearing support 10 moves right, because bearing 2 is fixed on the main shaft 6, when bearing support 10 moves right, just oppress bearing 2, bearing 2 is exerted pressure, when rotating adjusting nut 8, simultaneously can pressuring spring 4, when the pressure on putting on spring 4 equals to put on pressure on the bearing 2, reach state of equilibrium, the power during state of equilibrium is the pretightening force that puts on the bearing 2, therefore, the size of pretightening force is by spring 4 decisions.
Claims (2)
1, the adjustable pre-tightening mechanism of electricity main shaft, comprise and utilize interconnective electric main shaft of bearing and sleeve, it is characterized in that: bearing is installed in the end at electric main shaft, there is bearing support outside at bearing, the left end of bearing support inwardly shrinks, encase bearing outer ring after forming step, between bearing support and sleeve, linear bearing is set, pull bar utilizes the chassis of its bottom to be connected with bearing support, on pull bar, utilize adjusting nut to connect spring seat, the part that expands outwardly is set, form the end face step at sleeve lining on the right side of sleeve, spring seat is positioned at the expansion of sleeve, between the step end face of spring seat and sleeve spring is set.
2, mechanism according to claim 1 is characterized in that: the external diameter on pull bar chassis is less than the external diameter of linear bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03277387 CN2644055Y (en) | 2003-08-02 | 2003-08-02 | Adjustable prefastening machanism of electric main axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03277387 CN2644055Y (en) | 2003-08-02 | 2003-08-02 | Adjustable prefastening machanism of electric main axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2644055Y true CN2644055Y (en) | 2004-09-29 |
Family
ID=34302767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03277387 Expired - Fee Related CN2644055Y (en) | 2003-08-02 | 2003-08-02 | Adjustable prefastening machanism of electric main axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2644055Y (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402206C (en) * | 2006-02-10 | 2008-07-16 | 东南大学 | Intelligent high speed machining of electric main shaft with controllable pre-fastening force |
| CN100436009C (en) * | 2006-11-02 | 2008-11-26 | 沈阳建筑大学 | Hot-isostatic pressure silicon nitride all-ceramic electric main shaft and its mfg. method |
| CN101895170A (en) * | 2010-08-06 | 2010-11-24 | 湖南大学 | Electric main shaft with mouse cage type motor stator cooling structure |
| CN102059357A (en) * | 2010-11-30 | 2011-05-18 | 无锡机床股份有限公司 | High-accuracy sleeve main shaft structure for machine tool |
| CN102310203A (en) * | 2011-06-20 | 2012-01-11 | 西安交通大学 | High-speed main shaft with controllable non-uniformly distributed pre-tightening force and control method thereof based on regulation and control of hydraulic system |
| CN102554280A (en) * | 2011-12-16 | 2012-07-11 | 上海大学 | High speed electric spindle with preload control device |
| CN101704117B (en) * | 2009-07-06 | 2012-09-26 | 厦门精合电气自动化有限公司 | High-speed mainshaft bearing constant-pressure pre-loading device |
| CN102886713A (en) * | 2012-10-19 | 2013-01-23 | 无锡市百顺机械厂 | Internal grinding device for grinder |
| CN102974972A (en) * | 2012-12-05 | 2013-03-20 | 中国南方航空工业(集团)有限公司 | Bearing constant-pressure pretightening device and selective assembly method thereof |
| CN103029020A (en) * | 2012-06-18 | 2013-04-10 | 上海崇明机床厂 | Device for improving precision of steel ball machine tool plate groove |
| CN103182534A (en) * | 2013-03-20 | 2013-07-03 | 北京工业大学 | Bidirectional pressure regulating pre-tensioner for electric spindle angular contact ball bearing |
| CN103223499A (en) * | 2013-04-07 | 2013-07-31 | 北京航空航天大学 | Device capable of improving axial rigidity of main shaft of precision machine tool with adjustable bearing pre-tightening force |
| CN104088912A (en) * | 2014-07-16 | 2014-10-08 | 广州市昊志机电股份有限公司 | Pre-tightening structure for ball electric main shaft bearing |
| CN105014104A (en) * | 2015-06-24 | 2015-11-04 | 上海大学 | External-adjustable constant-pressure pre-tightening device for motorized spindle |
| CN106224394A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
| CN106224395A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
| CN107830065A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | Paired thrust ball bearing pre-tightening apparatus |
| PL422823A1 (en) * | 2017-09-12 | 2019-03-25 | Politechnika Łódzka | Mechanism of applying initial tension for the roll supporting angular bearings |
| PL422824A1 (en) * | 2017-09-12 | 2019-03-25 | Politechnika Łódzka | Mechanism of applying tension for the roll supporting angular bearings |
| CN109773590A (en) * | 2018-12-19 | 2019-05-21 | 广州市昊志机电股份有限公司 | A kind of collocation structure of spindle thermal |
| CN113275904A (en) * | 2021-06-25 | 2021-08-20 | 四川普什宁江机床有限公司 | Ultrahigh-precision numerical control turning center |
| CN113458429A (en) * | 2021-07-19 | 2021-10-01 | 长春工业大学 | Axial bidirectional vibration electric spindle |
-
2003
- 2003-08-02 CN CN 03277387 patent/CN2644055Y/en not_active Expired - Fee Related
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100402206C (en) * | 2006-02-10 | 2008-07-16 | 东南大学 | Intelligent high speed machining of electric main shaft with controllable pre-fastening force |
| CN100436009C (en) * | 2006-11-02 | 2008-11-26 | 沈阳建筑大学 | Hot-isostatic pressure silicon nitride all-ceramic electric main shaft and its mfg. method |
| CN101704117B (en) * | 2009-07-06 | 2012-09-26 | 厦门精合电气自动化有限公司 | High-speed mainshaft bearing constant-pressure pre-loading device |
| CN101895170A (en) * | 2010-08-06 | 2010-11-24 | 湖南大学 | Electric main shaft with mouse cage type motor stator cooling structure |
| CN102059357A (en) * | 2010-11-30 | 2011-05-18 | 无锡机床股份有限公司 | High-accuracy sleeve main shaft structure for machine tool |
| CN102310203A (en) * | 2011-06-20 | 2012-01-11 | 西安交通大学 | High-speed main shaft with controllable non-uniformly distributed pre-tightening force and control method thereof based on regulation and control of hydraulic system |
| CN102310203B (en) * | 2011-06-20 | 2012-07-04 | 西安交通大学 | High-speed main shaft with controllable non-uniformly distributed pre-tightening force and control method thereof based on regulation and control of hydraulic system |
| CN102554280A (en) * | 2011-12-16 | 2012-07-11 | 上海大学 | High speed electric spindle with preload control device |
| CN103029020A (en) * | 2012-06-18 | 2013-04-10 | 上海崇明机床厂 | Device for improving precision of steel ball machine tool plate groove |
| CN102886713A (en) * | 2012-10-19 | 2013-01-23 | 无锡市百顺机械厂 | Internal grinding device for grinder |
| CN102974972A (en) * | 2012-12-05 | 2013-03-20 | 中国南方航空工业(集团)有限公司 | Bearing constant-pressure pretightening device and selective assembly method thereof |
| CN103182534A (en) * | 2013-03-20 | 2013-07-03 | 北京工业大学 | Bidirectional pressure regulating pre-tensioner for electric spindle angular contact ball bearing |
| CN103223499A (en) * | 2013-04-07 | 2013-07-31 | 北京航空航天大学 | Device capable of improving axial rigidity of main shaft of precision machine tool with adjustable bearing pre-tightening force |
| CN103223499B (en) * | 2013-04-07 | 2015-02-25 | 北京航空航天大学 | Device capable of improving axial rigidity of main shaft of precision machine tool with adjustable bearing pre-tightening force |
| CN104088912A (en) * | 2014-07-16 | 2014-10-08 | 广州市昊志机电股份有限公司 | Pre-tightening structure for ball electric main shaft bearing |
| CN105014104A (en) * | 2015-06-24 | 2015-11-04 | 上海大学 | External-adjustable constant-pressure pre-tightening device for motorized spindle |
| CN106224394B (en) * | 2016-09-06 | 2019-04-02 | 沃德传动（天津）股份有限公司 | A kind of pre-tightening apparatus of bearing assembly and bearing |
| CN106224395A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
| CN106224395B (en) * | 2016-09-06 | 2019-03-29 | 沃德传动（天津）股份有限公司 | A kind of pre-tightening apparatus of bearing assembly and bearing |
| CN106224394A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
| PL422823A1 (en) * | 2017-09-12 | 2019-03-25 | Politechnika Łódzka | Mechanism of applying initial tension for the roll supporting angular bearings |
| PL422824A1 (en) * | 2017-09-12 | 2019-03-25 | Politechnika Łódzka | Mechanism of applying tension for the roll supporting angular bearings |
| CN107830065A (en) * | 2017-12-04 | 2018-03-23 | 洛阳理工学院 | Paired thrust ball bearing pre-tightening apparatus |
| CN109773590A (en) * | 2018-12-19 | 2019-05-21 | 广州市昊志机电股份有限公司 | A kind of collocation structure of spindle thermal |
| CN113275904A (en) * | 2021-06-25 | 2021-08-20 | 四川普什宁江机床有限公司 | Ultrahigh-precision numerical control turning center |
| CN113458429A (en) * | 2021-07-19 | 2021-10-01 | 长春工业大学 | Axial bidirectional vibration electric spindle |
| CN113458429B (en) * | 2021-07-19 | 2023-09-08 | 长春工业大学 | Axial bidirectional vibration electric spindle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |