CN101216109A - Sealing method for oil fog lubrication electric mainshaft bearing - Google Patents
Sealing method for oil fog lubrication electric mainshaft bearing Download PDFInfo
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- CN101216109A CN101216109A CNA2008100490518A CN200810049051A CN101216109A CN 101216109 A CN101216109 A CN 101216109A CN A2008100490518 A CNA2008100490518 A CN A2008100490518A CN 200810049051 A CN200810049051 A CN 200810049051A CN 101216109 A CN101216109 A CN 101216109A
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- baffle plate
- rotating shaft
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Abstract
A sealing method used with an oil-mist lubricated electric main shaft bearing is provided. A front bearing 7 of the electric main shaft is sealed by the combination of larmier seal, small-clearance seal and labyrinth seal. A front screw cap 3 is designed with two water-throwing edges to form the larmier seal with strong blocking effect under the centrifugal action. The small-clearance seal is arranged between the front screw cap and a baffle 4, with a clearance diameter of 0.4-0.6 mm and an axial clearance of 0.5-1 mm, and the clearance size is defined by the basic size. The labyrinth seals formed by flexible joint planes are arranged between the front screw cap, the baffle and a front small cover 5, with a radial clearance less than 0.25 mm and an axial clearance less then 0.5 mm. Discharge holes are arranged below a dust-proof cover 2. The front bearing and a rotating shaft 1 are fixed on a front bearing seat 6. The rotating shaft 1 is locked by the front thread thereof. The baffle is fixed by bolt on the front small cover. The dust-proof cover is fixed by bolt on the front end of the baffle.
Description
Technical field
The invention belongs to technical field of sealing technology, specially refer to the encapsulating method of a kind of use at the oil mist lubrication electric mainshaft bearing.
Background technique
The oil fog lubrication electric main shaft need be equipped with oil fog generator and link to each other with electric main shaft, oil mist lubrication device generates clean 0.3Mpa left and right sides pressure oil fog and flows to into electric mainshaft bearing position lubricating bearings, when electric main shaft runs well, mist of oil need continue to be supplied to bearing, discharge in gap between most of tegillum in the past of the waste gas that produces and the preceding nut, the lasting supply of mist of oil makes the waste gas that is produced have certain pressure, when leaking, waste gas also stoped the extraneous abrasive particle that comes off that in grinding process, produces, metallic dust and cutting fluid are attacked bearing, and bearing has been played protective action preferably.
But in reality is produced in order to raise the efficiency, the splash pressure ratio of electricity main shaft cutting fluid is bigger, and greater than the mist of oil exhaust gas pressure, common sealing configuration does not reach desirable requirement under a lot of situations, often cause electric mainshaft bearing stuck or the water inlet burn, reduce electric main shaft working life and stability.
Summary of the invention
In order to address the above problem, the invention provides the encapsulating method of a kind of use at the oil mist lubrication electric mainshaft bearing, use the sealing method can solve the oil mist lubrication electric mainshaft bearing under the heavy grinding situation, often water inlet is burnt or stuck problem, improves the working life and the stability of oil fog lubrication electric main shaft.
In order to realize the foregoing invention purpose, the present invention has adopted following technological scheme:
Described use mainly is to be positioned at the sealing of electric main spindle front bearing employing cornice formula, little clearance seal and three kinds of compound modes of labyrinth seal at the encapsulating method of oil mist lubrication electric mainshaft bearing; Two water dumping limits have been designed on the preceding nut, form the sealing of cornice formula, under electric main shaft high speed rotating, the water dumping lateral dominance on the preceding nut has very strong barrier effect with centrifugal action for cutting fluid and the mill slag that gap between electric front-end of spindle dust cover and the rotating shaft enters; Adopt little clearance seal between preceding nut and the baffle plate, the size in gap will be taken into account fore bearing is played sealing effect and makes exhaust gases unimpededly discharge 2 points, therefore diametric clearance is controlled in 0.4～0.6mm, axial clearance is controlled in 0.5～1mm, and different gap values is determined because of the base dimension according to preceding nut and baffle plate; Adopt the comparatively complicated polytrope junction plane of structure to form labyrinth seal between preceding nut, baffle plate and the preceding tegillum, the radial clearance of labyrinth seal is controlled within the 0.25mm, and axial clearance is controlled within the 0.5mm; The design of dust cover below has drain boles; After fore bearing and rotating shaft be fixed into front-end bearing pedestal, by screw preceding tegillum is fixed on the front-end bearing pedestal, screw thread by electric main shaft rotating shaft front end again, with preceding nut fore bearing is locked, the plate washer of making two is screwed on preceding tegillum, and the front end at baffle plate is screwed dust cover then.
Owing to adopted technological scheme as mentioned above, the present invention has following superiority:
1, structural design is simple, and technology capability is good;
2, sealing configuration long service life;
3, good sealing effect;
4, with low cost, be easy to safeguard energy-conserving and environment-protective.
Description of drawings
Fig. 1 is an encapsulating method structural representation of the present invention;
Among Fig. 1: the 1-rotating shaft; The 2-dust cover; Nut before the 3-; The 4-baffle plate; Tegillum before the 5-; The 6-front-end bearing pedestal; The 7-fore bearing
Embodiment
As shown in Figure 1: after electric front-end of spindle is fixed into front-end bearing pedestal 6 with fore bearing 7 and rotating shaft 1, outer end at front-end bearing pedestal 6 is fixed on preceding tegillum 5 on the front-end bearing pedestal 6 by screw, screw thread by electric main shaft rotating shaft 1 front end, with preceding nut 3 fore bearing 7 is locked, the plate washer 4 of making two is screwed on preceding tegillum 5, and the front end at baffle plate 4 is screwed dust cover 2 then.
Between preceding nut 3 and baffle plate 4, adopt little clearance seal.The gap has the waste oil mist to discharge herein, therefore the size in gap will be taken into account and can play sealing effect and make exhaust gases unimpededly discharge 2 points bearing herein, process research and repetition test are chosen diametric clearance and are controlled in 0.4～0.6mm scope, axial clearance is controlled in 0.5～1mm scope, and different gap values is mainly selected according to the base dimension size of preceding nut 3 and baffle plate 4.
Adopt the comparatively complicated polytrope junction plane of structure to form labyrinth seal between preceding nut 3, baffle plate 4 and preceding tegillum 5, the radial clearance of labyrinth seal is controlled within the 0.25mm, and axial clearance is controlled within the 0.5mm.In concrete design, need form according to concrete locational space and operating conditions selection labyrinth seal.
On preceding nut 3, designed two water dumping limits and sealed, thereby most of can being thrown away by the water dumping limit of the cutting drop of intrusion and mill slag reaches the purpose that stops cutting fluid and impurity to enter fore bearing 7 to form the cornice formula.
Design has drain boles below dust cover 2 vertical positions, can discharge the cutting drop and the mill slag that are thrown away by the water dumping limit.
The intrusion of little gap if there is faint cutting fluid to cross the water dumping edge, then can be thrown away by second water dumping limit on the preceding nut, the weep hole that steering channel along position under the baffle plate is discharged on the dust cover is discharged, the waste oil mist of discharging from fore bearing 7 front ends also can be taken the cutting drop of some intrusions out of with certain drainage pressure by labyrinth seal simultaneously, and bearing is played protective action.
Encapsulating method of the present invention has adopted combined sealing structure, has protected bearing pack accurate on the electric main shaft, has improved the reliability of electric main shaft, has guaranteed the working life of electric main shaft.
Claims (1)
1. a use is characterized in that at the encapsulating method of oil mist lubrication electric mainshaft bearing: the sealing method mainly is to adopt the sealing of cornice formula, little clearance seal and three kinds of compound modes of labyrinth seal being positioned at electric main spindle front bearing; Two water dumping limits have been designed on the preceding nut 3, form the sealing of cornice formula, under electric main shaft high speed rotating, the water dumping lateral dominance on the preceding nut has very strong barrier effect with centrifugal action for cutting fluid and the mill slag that gap between electric front-end of spindle dust cover and the rotating shaft enters; Adopt little clearance seal between preceding nut 3 and the baffle plate 4, the size in gap will be taken into account fore bearing is played sealing effect and makes exhaust gases unimpededly discharge 2 points, therefore diametric clearance is controlled in 0.4～0.6mm, axial clearance is controlled in 0.5～1mm, and different gap values is determined because of the base dimension according to preceding nut 3 and baffle plate 4; Adopt the comparatively complicated polytrope junction plane of structure to form labyrinth seal between preceding nut 3, baffle plate 4 and the preceding tegillum 5, the radial clearance of labyrinth seal is controlled within the 0.25mm, and axial clearance is controlled within the 0.5mm; The design of dust cover 2 belows has drain boles; After fore bearing 7 and rotating shaft 1 be fixed into front-end bearing pedestal 6, by screw preceding tegillum 5 is fixed on the front-end bearing pedestal 6, screw thread by electric main shaft rotating shaft 1 front end again, with preceding nut 3 fore bearing 7 is locked, the plate washer 4 of making two is screwed on preceding tegillum 5, and the front end at baffle plate 4 is screwed dust cover 2 then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100490518A CN100572861C (en) | 2008-01-04 | 2008-01-04 | A kind of encapsulating method that uses at the oil mist lubrication electric mainshaft bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100490518A CN100572861C (en) | 2008-01-04 | 2008-01-04 | A kind of encapsulating method that uses at the oil mist lubrication electric mainshaft bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101216109A true CN101216109A (en) | 2008-07-09 |
| CN100572861C CN100572861C (en) | 2009-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100490518A Expired - Fee Related CN100572861C (en) | 2008-01-04 | 2008-01-04 | A kind of encapsulating method that uses at the oil mist lubrication electric mainshaft bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN100572861C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014069975A1 (en) * | 2012-11-01 | 2014-05-08 | Gonzáles Bernal Germán Florencio | Method for sealing electric motors for the application of lubrication by mist |
| CN104179978A (en) * | 2014-08-27 | 2014-12-03 | 台州市路桥景耀数控机床厂 | Dustproof and waterproof sealing structure for mechanical spindle |
| CN107939977A (en) * | 2017-12-18 | 2018-04-20 | 太重煤机有限公司 | A kind of more lip mouth skeleton oil seals |
| CN110026787A (en) * | 2019-05-22 | 2019-07-19 | 宝鸡忠诚机床股份有限公司 | A kind of sealing of machine tool chief axis and pollution discharge structure |
| CN110439927A (en) * | 2019-08-30 | 2019-11-12 | 刘超 | Outer ring has the high-speed bearing in mist of oil channel |
| CN110605406A (en) * | 2018-06-14 | 2019-12-24 | 靖江斯贝得电机制造有限公司 | Self-draining sealed electric spindle |
| CN110860702A (en) * | 2019-11-27 | 2020-03-06 | 重庆宏钢数控机床有限公司 | Dynamic sealed spindle box |
| CN112178194A (en) * | 2020-10-10 | 2021-01-05 | 江门市新会区天府密封科技有限公司 | Multifunctional portable mechanical seal |
| CN113319640A (en) * | 2021-06-02 | 2021-08-31 | 江苏星晨高速电机有限公司 | Shaft end protection structure of hollow water outlet main shaft |
-
2008
- 2008-01-04 CN CNB2008100490518A patent/CN100572861C/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014069975A1 (en) * | 2012-11-01 | 2014-05-08 | Gonzáles Bernal Germán Florencio | Method for sealing electric motors for the application of lubrication by mist |
| CN104179978A (en) * | 2014-08-27 | 2014-12-03 | 台州市路桥景耀数控机床厂 | Dustproof and waterproof sealing structure for mechanical spindle |
| CN104179978B (en) * | 2014-08-27 | 2016-09-28 | 台州市路桥景耀数控机床厂 | A kind of mechanical main shaft preventing dust watertight construction |
| CN107939977A (en) * | 2017-12-18 | 2018-04-20 | 太重煤机有限公司 | A kind of more lip mouth skeleton oil seals |
| CN110605406A (en) * | 2018-06-14 | 2019-12-24 | 靖江斯贝得电机制造有限公司 | Self-draining sealed electric spindle |
| CN110026787A (en) * | 2019-05-22 | 2019-07-19 | 宝鸡忠诚机床股份有限公司 | A kind of sealing of machine tool chief axis and pollution discharge structure |
| CN110026787B (en) * | 2019-05-22 | 2024-04-16 | 宝鸡忠诚机床股份有限公司 | Machine tool spindle sealing and pollution discharging structure |
| CN110439927A (en) * | 2019-08-30 | 2019-11-12 | 刘超 | Outer ring has the high-speed bearing in mist of oil channel |
| CN110439927B (en) * | 2019-08-30 | 2020-06-23 | 乐清市钜派企业管理咨询有限公司 | High-speed bearing with oil mist channel on outer ring |
| CN110860702A (en) * | 2019-11-27 | 2020-03-06 | 重庆宏钢数控机床有限公司 | Dynamic sealed spindle box |
| CN112178194A (en) * | 2020-10-10 | 2021-01-05 | 江门市新会区天府密封科技有限公司 | Multifunctional portable mechanical seal |
| CN113319640A (en) * | 2021-06-02 | 2021-08-31 | 江苏星晨高速电机有限公司 | Shaft end protection structure of hollow water outlet main shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100572861C (en) | 2009-12-23 |
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Granted publication date: 20091223 Termination date: 20180104 |