CN101478190B - Air sealing construct design for electric main shaft of oil grease mill - Google Patents
Air sealing construct design for electric main shaft of oil grease mill Download PDFInfo
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- CN101478190B CN101478190B CN2008102373167A CN200810237316A CN101478190B CN 101478190 B CN101478190 B CN 101478190B CN 2008102373167 A CN2008102373167 A CN 2008102373167A CN 200810237316 A CN200810237316 A CN 200810237316A CN 101478190 B CN101478190 B CN 101478190B
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- baffle plate
- air
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- main shaft
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Abstract
The invention relates to a design of an air seal structure of an electric spindle used for a grease film. The air with a certain pressure enters in an annular cavity between a baffle plate 3 and a front small cover 6 through an air passage 8 arranged on a front bearing seat 7 and then reaches an annular groove through a radial slant hole, a clearance is formed between the inner circle of the baffle plate and the outer circle of a front screw cap 2, a sawtooth-shaped groove is designed on the front screw cap and corresponds to the other annular groove of the baffle plate, the pressure air forms pressure air sealing rings in the clearance and the two grooves along with the rotation of the rotating axle at high speed, and the pressure air sealing rings are used for preventing the cooling fluid and the foreign impurities from entering in the rotating axle; an O-shaped sealing ring is sealed at the sealing point among the baffle plate, a dust cap and the front bearing seat for ensuring the air tightness of running of the pressure air in the air passage; and the sawtooth shape of the front screw cap can prevent a small amount of cutting solution from infiltrating, the small amount of the cutting solution can be thrown into the other annular groove of the baffle plate along with the rotation of the front screw cap, and then is discharged outside the electric spindle through the baffle plate and a guide groove or guide hole for the dust cap, so that the reliable air tightness is provided for the high-precision running of a bearing 9.
Description
Technical field
The invention belongs to the electric main shaft sealing technical field, specially refer to a kind of hermetic seal construction design method of electric main shaft of oil grease mill.
Background technology
Fig. 1-2 is the conventional structure of grease electricity front-end of spindle sealing; rotating shaft 1 supporting bearing 9 adopts grease lubrication; sealing adopts the polymorphic structure of O RunddichtringO 5 and preceding nut 2 and preceding tegillum 6 to protect; the electricity main shaft is in the process of carrying out high-speed grinding; a large amount of emery wheel cooling fluid meeting splashes are in the rotating shaft and dust cap 4 of electric front-end of spindle; because the air pressure of electric main shaft inside when high speed rotating can be than the smaller formation pressure differential in the external world; when the cooling splash at night that carries come off abrasive particle and metal dust is promptly processed when end to electric front-end of spindle; though the electricity main shaft has adopted closely spaced hermetically-sealed construction, still has a small amount of cooling and enters in the electric main shaft by the gap between rotating shaft and the dust cap night.When electric main shaft quits work, the rotating shaft reduction of speed is in the process of shutting down, the cooling of carrying destructive dust that adheres in the little gap can be gone into bearing portion by suck-back night, and its impurity that carries will destroy the precision of bearing operation, thereby loses the overall precision of electric main shaft.Cause bearing because of above-mentioned former thereby do not reach design service life far away in actual the use, cause electric main shaft maintenance cost and customer using cost to increase greatly, electric main shaft reliability reduces greatly, therefore the high-speed grinding of the incompatible electric main shaft of this hermetically-sealed construction.
Summary of the invention
In order to address the above problem, improve the reliability of electric spindle operation, the invention provides a kind of hermetic seal construction design method of electric main shaft of oil grease mill, this hermetic seal construction design method is simple, practical, has very big promotional value.
In order to realize the foregoing invention purpose, the present invention has adopted following technical scheme:
To be the pure air that will certain pressure be arranged enter in the annular chamber between baffle plate and the preceding tegillum by the air flue that is provided with on the front-end bearing pedestal hermetic seal construction design method of described electric main shaft of oil grease mill, arrive the annular groove of baffle plate again by the radially inclined hole of baffle plate annular chamber circumference uniform distribution, circle has the gap with preceding nut cylindrical in the baffle plate, preceding nut designs has saw-tooth grooves, saw-tooth grooves is corresponding with another annular groove of circle in the baffle plate, high speed rotating along with rotating shaft, pressure air forms the airtight seal ring of pressure in gap and annular groove and another annular groove, stop that the cooling night and the impurity that contain destructive dust enter rotating shaft; Be the air-tightness that ensures that pressure air moves in described air flue, implement static seal by the O RunddichtringO in sealing place of baffle plate and dust cap and front-end bearing pedestal; The groove of preceding nut designs has the infiltration that zigzag can stop micro cutting liquid, along with preceding nut together rotates in company with rotating shaft, micro cutting liquid can be dumped into another annular groove of baffle plate, discharge outside the electric main shaft through the guiding groove or the bullport of baffle plate and dust cap again, for the running of the high accuracy of bearing provides reliable hermetic seal.
By the tegillum, the design of the cylindrical of baffle plate had seal groove before the hermetic seal structural design of described electric main shaft of oil grease mill, baffle plate abutted against, in the seal groove configuration O RunddichtringO be used for and front-end bearing pedestal between static seal; The end face design of baffle plate has annular chamber, the air flue butt joint of annular chamber and front-end bearing pedestal; The interior circle design of baffle plate has two annular grooves, an annular groove to communicate with the radially inclined hole of circumference uniform distribution until arriving annular chamber, and another annular groove is corresponding with the saw-tooth grooves on the preceding nut, and baffle plate is in resting state.
Owing to adopted technical scheme as mentioned above, the present invention has following superiority:
1) sealing long service life, stable and reliable operation;
2) the sealing power consumption is little, only is about 5% of contact mechanical seal;
3) compare with other non-contacting seals, the leakage rate of hermetic seal is very little;
4) can realize that zero of medium overflows, be a kind of environment-friendly type sealing;
5) hermetic seal is simple in structure, reliable.
Description of drawings
Fig. 1 is electric front-end of spindle grease sealed conventional structure schematic diagram;
Fig. 2 is electric front-end of spindle grease sealed conventional structure schematic diagram;
Fig. 3 is that symmetry of the present invention is partly cutd open structural representation;
Among the above-mentioned figure: the 1-rotating shaft; Nut before the 2-; The 3-baffle plate; The 4-dust cap; The 5-O RunddichtringO; Tegillum before the 6-; The 7-front-end bearing pedestal; The 8-air flue; The 9-bearing.
Embodiment
In conjunction with Fig. 3, to be the pure air that will certain pressure be arranged enter in the annular chamber between baffle plate 3 and the preceding tegillum 6 by the air flue 8 that is provided with on the front-end bearing pedestal 7 the hermetic seal construction design method of electric main shaft of oil grease mill of the present invention, arrive the annular groove of baffle plate 3 again by the radially inclined hole of baffle plate 3 annular chamber circumference uniform distributions, circle has the gap with preceding nut 2 cylindricals in the baffle plate 3, preceding nut 2 designs have saw-tooth grooves, saw-tooth grooves is corresponding with another annular groove of circle in the baffle plate 3, high speed rotating along with rotating shaft 1, pressure air forms the airtight seal ring of pressure in gap and annular groove and another annular groove, stop that the cooling night and the impurity that contain destructive dust enter rotating shaft 1; Be the air-tightness that ensures that pressure air moves in described air flue, implement static seal with sealing place of front-end bearing pedestal 7 by O RunddichtringO 5 at baffle plate 3 and dust cap 4; The groove of preceding nut 2 designs has the infiltration that zigzag can stop micro cutting liquid, along with preceding nut 2 together rotates in company with rotating shaft 1, micro cutting liquid can be dumped into baffle plate 3 another annular grooves, discharge outside the electric main shaft through the guiding groove or the bullport of baffle plate 3 and dust cap 4 again, for the running of the high accuracy of bearing 9 provides reliable hermetic seal.
Tegillum 6 was other before the hermetic seal construction design method of electric main shaft of oil grease mill of the present invention, baffle plate 3 abutted against, and the cylindrical design of baffle plate 3 has seal groove, in the seal groove configuration O RunddichtringO 5 be used for and front-end bearing pedestal 7 between static seal; The end face design of baffle plate 3 has annular chamber, the air flue butt joint of annular chamber and front-end bearing pedestal 7; The interior circle design of baffle plate 3 has two annular grooves, an annular groove to communicate with the radially inclined hole of circumference uniform distribution until arriving annular chamber, and another annular groove is corresponding with the saw-tooth grooves on the preceding nut 2, and baffle plate 3 is in resting state.
Hermetic seal construction design method of the present invention has played good protective action to the bearing 9 of electric main shaft, has improved the useful life and the reliability of electric main shaft.
Claims (2)
1. the hermetic seal construction design method of an electric main shaft of oil grease mill, it is characterized in that: this hermetic seal construction design method be will have the pure air of certain pressure go up the air flue (8) that is provided with by front-end bearing pedestal (7) and enter in the annular chamber between baffle plate (3) and the preceding tegillum (6), arrive the annular groove of baffle plate (3) again by the radially inclined hole of baffle plate (3) annular chamber circumference uniform distribution, circle has the gap with preceding nut (2) cylindrical in the baffle plate (3), preceding nut (2) design has saw-tooth grooves, saw-tooth grooves is corresponding with another annular groove of circle in the baffle plate (3), high speed rotating along with rotating shaft (1), pressure air forms the airtight seal ring of pressure in gap and annular groove and another annular groove, stop that the cooling night and the impurity that contain destructive dust enter rotating shaft (1); Be the air-tightness that ensures that pressure air moves in described air flue, implement static seal with sealing place of front-end bearing pedestal (7) by O RunddichtringO (5) at baffle plate (3) and dust cap (4); The groove of preceding nut (2) design has the infiltration that zigzag can stop micro cutting liquid, along with preceding nut (2) together rotates in company with rotating shaft (1), micro cutting liquid can be dumped into another annular groove of baffle plate (3), discharge outside the electric main shaft through the guiding groove or the bullport of baffle plate (3) and dust cap (4) again, for the running of the high accuracy of bearing (9) provides reliable sealing.
2. the hermetic seal construction design method of electric main shaft of oil grease mill according to claim 1, it is characterized in that: it is other that baffle plate (3) abuts against preceding tegillum (6), the design of the cylindrical of baffle plate (3) has seal groove, in the seal groove configuration O RunddichtringO (5) be used for and front-end bearing pedestal (7) between static seal; The end face design of baffle plate (3) has annular chamber, the air flue butt joint of annular chamber and front-end bearing pedestal (7); The interior circle design of baffle plate (3) has two annular grooves, an annular groove to communicate with the radially inclined hole of circumference uniform distribution until arriving annular chamber, and another annular groove is corresponding with the saw-tooth grooves on the preceding nut (2), and baffle plate (3) is in resting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102373167A CN101478190B (en) | 2008-12-30 | 2008-12-30 | Air sealing construct design for electric main shaft of oil grease mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102373167A CN101478190B (en) | 2008-12-30 | 2008-12-30 | Air sealing construct design for electric main shaft of oil grease mill |
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| Publication Number | Publication Date |
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| CN101478190A CN101478190A (en) | 2009-07-08 |
| CN101478190B true CN101478190B (en) | 2011-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102373167A Active CN101478190B (en) | 2008-12-30 | 2008-12-30 | Air sealing construct design for electric main shaft of oil grease mill |
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| CN102252096B (en) * | 2011-01-12 | 2014-09-17 | 北京中电科电子装备有限公司 | Waterproof sealing device and cutting machine |
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| CN103100931A (en) * | 2011-11-14 | 2013-05-15 | 深圳市速锋科技有限公司 | Dust cover of ball high-speed main shaft |
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| CN102717333B (en) * | 2012-06-29 | 2014-06-25 | 无锡机床股份有限公司 | High-speed electric main shaft structure of machine tool |
| CN102979915A (en) * | 2012-12-06 | 2013-03-20 | 无锡博华机电有限公司 | Novel multihole circulation air-tight seal structure of main shaft |
| CN104338943B (en) * | 2013-07-26 | 2017-04-12 | 胜杰工业股份有限公司 | Lathe spindle component |
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| CN104993635B (en) * | 2015-07-09 | 2017-10-13 | 中国铁路总公司 | The traction electric machine of structure is detected with bearing chamber blast |
| CN106092869A (en) * | 2016-08-16 | 2016-11-09 | 中科赛德（北京）科技有限公司 | A kind of contactless sealing proof box |
| JP6437993B2 (en) * | 2016-12-22 | 2018-12-12 | 株式会社Ｓｕｂａｒｕ | Bearing structure |
| CN106763797B (en) * | 2017-03-23 | 2019-02-01 | 马鞍山市恒永利机械科技有限公司 | A kind of the air curtain generation unit and rotary shaft gas sealing mechanism of hermetic seal |
| CN108736632B (en) * | 2018-04-20 | 2020-09-22 | 苏州德能电机股份有限公司 | Air-cooled permanent magnet synchronous motor with air-tight sealing structure and working method thereof |
| CN109261993A (en) * | 2018-11-21 | 2019-01-25 | 陕西海力特精密机械有限公司 | Numerically controlled lathe high-speed electric main shaft gas sealing structure |
| CN114251374A (en) * | 2021-12-31 | 2022-03-29 | 昆山顺之晟精密机械有限公司 | Bearing seat for loop wire cutting |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5487631A (en) * | 1992-09-19 | 1996-01-30 | Systematic Drill Head Co. Ltd. | Machine tools |
| CN2833993Y (en) * | 2005-10-28 | 2006-11-01 | 刘森钢 | High-speed electric main shaft with air blasting device |
| CN101216112A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Straight-through type non-contact hermetic sealing structural design for grease lubricating bearing |
-
2008
- 2008-12-30 CN CN2008102373167A patent/CN101478190B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5487631A (en) * | 1992-09-19 | 1996-01-30 | Systematic Drill Head Co. Ltd. | Machine tools |
| CN2833993Y (en) * | 2005-10-28 | 2006-11-01 | 刘森钢 | High-speed electric main shaft with air blasting device |
| CN101216112A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Straight-through type non-contact hermetic sealing structural design for grease lubricating bearing |
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| CN101478190A (en) | 2009-07-08 |
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Effective date of registration: 20180509 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: Luoyang Bearing Research Institute Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: Zhouyan Science and Technology Co., Ltd., Luoyang |