CN209586961U - A kind of oil fog lubrication electric front-end of spindle bearing seal structure - Google Patents
A kind of oil fog lubrication electric front-end of spindle bearing seal structure Download PDFInfo
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- CN209586961U CN209586961U CN201920172520.9U CN201920172520U CN209586961U CN 209586961 U CN209586961 U CN 209586961U CN 201920172520 U CN201920172520 U CN 201920172520U CN 209586961 U CN209586961 U CN 209586961U
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Abstract
A kind of oil fog lubrication electric front-end of spindle bearing seal structure, including shell, Qian great Gai, front end outer bearing, front end inner bearing, shaft, inner spacing collar, outer separator, bearing (ball) cover, nut, outer end cap；First layer labyrinth sealing is wherein formed between bearing (ball) cover and nut, forms second layer clearance seal between outer end cap and shaft, and fog lubrication gas is blown out from two layers of sealing structure, prevents grinding fluid from entering inside electro spindle；In addition the Qian great Gai of electro spindle front end, the lower part of bearing (ball) cover increase mist of oil gas outlet passageway, increase fog lubrication gas flow；The fog lubrication hole for blowing to inside and outside two bearings in front end is provided with before electro spindle on end bearing outer separator, fog lubrication gas two bearings inside and outside to front end can be lubricated and radiate simultaneously, to keep front end bearing lubrication, heat dissipation more abundant, completely solve it is previous since front end bearing fog lubrication gas flow is small, make bearing lubrication, heat dissipation it is insufficient and generate the stuck problem of fever.
Description
Technical field
The utility model relates to bearing grindings to process electricity consumption spindle technology field, and in particular to a kind of fog lubrication electro spindle
Front end bearing seal structure.
Background technique
The existing electro spindle using fog lubrication, front end bearing seal use labyrinth seal structure, fog lubrication
Gas is discharged from preceding end bearing labyrinth seal structure, prevents grinding fluid used in processing from entering inside electro spindle；But
In actual use, electric mainshaft bearing stuck phenomenon still can occur for electro spindle, and basic reason is existing electro spindle
Preceding end bearing labyrinth seal structure gap is too small, and resistance is excessive when fog lubrication gas is discharged from labyrinth seal structure, leads
It causes fog lubrication gas flow too small, to keep front end bearing lubrication, heat dissipation insufficient, causes front end bearing heating stuck.
Utility model content
In order to overcome the shortcomings in the background art, the utility model discloses a kind of oil fog lubrication electric front-end of spindle bearing is close
Seal structure wherein forms first layer labyrinth sealing, forms the second layer between outer end cap and shaft between bearing (ball) cover and nut
Clearance seal, fog lubrication gas are blown out from two layers of sealing structure, prevent grinding fluid from entering inside electro spindle；In addition electro spindle
The Qian great Gai of front end, the lower part of bearing (ball) cover increase mist of oil gas outlet passageway, increase fog lubrication gas flow；Together
When, the fog lubrication hole for blowing to inside and outside two bearings in front end, fog lubrication gas are provided with before electro spindle on end bearing outer separator
Two bearings inside and outside to front end it can be lubricated and radiate simultaneously, to keep front end bearing lubrication, heat dissipation more abundant.
In order to realize the purpose of utility model, the utility model adopts the following technical solution: a kind of oil fog lubrication electric master
Axis front end bearing seal structure, including shell, Qian great Gai, front end outer bearing, front end inner bearing, shaft, inner spacing collar, outer separator,
Bearing (ball) cover, nut, outer end cap；The shell is circular tube shaped, is provided with mist of oil gas passage on tube wall；Big lid is short before described
Annulus shell-like is provided with step among outer circle, and inner hole right end is provided with stepped hole；Preceding big lid is provided with mist of oil gas passage, oil
Fog body channel inlet end is located in outer circle step right end face, and mist of oil gas passage outlet side is arranged among Qian great Gai inner hole
Circular hole face on；Big lid setting is fixed on the left side of shell before described, and shell is arranged in one end of stepped hole in right side
In inner hole；The preceding mist of oil gas channel inlet end covered greatly is connected with the mist of oil gas passage of shell；Fore bearing has two sets, respectively
For front end outer bearing and front end inner bearing, front end outer bearing and front end inner bearing are arranged in the inner hole of Qian great Gai；The shaft
For Step Shaft, set gradually from left to right including active section, seal section, thread segment, bearing construction section, bearing positioning section；Shaft
Bearing construction section be arranged in the interior sets of holes of front end outer bearing and front end inner bearing；The front end outer bearing, front end inner bearing
Between be provided with inner spacing collar and outer separator；The bearing (ball) cover is the short annular shape with flange, is provided with step on the right side of inner hole,
The left side that bearing (ball) cover setting is covered greatly before being fixed on, right end face are pressed on the housing end face of front end outer bearing；The spiral shell
Mother is the round nut that outer circle has step, is arranged in shaft thread section, the right side of nut is pressed on the interior of front end outer bearing
It covers on end face；The outer circle step surface of nut and the inner hole step of bearing (ball) cover constitute the labyrinth of front end outer bearing and front end inner bearing
Formula sealing structure；The outer end cap is circular groove shape, and through-hole is provided among slot bottom, and outer end cap setting is fixed on a bearing (ball) cover left side
It holds, the seal section of shaft is arranged in the through-hole among slot bottom, and the seal section of through-hole and shaft among outer end cap slot bottom constitutes gas
Gap type sealing；The lower part covered greatly is additionally provided with axial preceding big lid mist of oil gas outlet passageway before described, under the bearing (ball) cover
Portion is additionally provided with axial bearing (ball) cover mist of oil gas passage, preceding big lid mist of oil gas outlet passageway and bearing (ball) cover mist of oil gas
Channel is connected；It is provided with annular mist of oil slot among the outer separator outer circumference surface, is provided with trapezoidal ring-type among inner circle hole face
Step；Bearing mist of oil lubrication hole is additionally provided on outer separator, the air inlet of bearing mist of oil lubrication hole is arranged in annular mist of oil slot bottom
Portion, gas outlet are arranged on the two sides inclined-plane of trapezoidal circular step；Annular mist of oil slot goes out with the preceding mist of oil gas passage covered greatly
Gas end is connected.
Preferably, draining straight down is additionally provided on the preceding big lid mist of oil gas outlet passageway of the preceding lower part great Gai
Mouthful.
Preferably, the trapezoidal circular step that the outer separator bearing mist of oil lubrication hole gas outlet and inner circle hole face centre are arranged
Trapezoidal faces two sides inclined-plane it is vertical.
Preferably, annular groove is provided among the outer separator annular mist of oil trench bottom.
Due to the adoption of the technical scheme as described above, the utility model has the following beneficial effects: the utility model discloses
A kind of oil fog lubrication electric front-end of spindle bearing seal structure, including shell, Qian great Gai, front end outer bearing, front end inner bearing, turn
Axis, inner spacing collar, outer separator, bearing (ball) cover, nut, outer end cap constitute complete oil fog lubrication electric front-end of spindle bearing seal
Structure；First layer labyrinth sealing is wherein formed between bearing (ball) cover and nut, and the second interlayer is formed between outer end cap and shaft
Gap sealing, fog lubrication gas are blown out from two layers of sealing structure, prevent grinding fluid from entering inside electro spindle；In this structure basis
On, mist of oil gas outlet passageway is increased in the Qian great Gai of electro spindle front end, the lower part of bearing (ball) cover, increases fog lubrication gas
Body flow；Meanwhile the fog lubrication hole for blowing to inside and outside two bearings in front end is provided with before electro spindle on end bearing outer separator, oil
Mist lubrication gas two bearings inside and outside to front end can be lubricated and radiate simultaneously, to make front end bearing lubrication, heat dissipation more
Sufficiently, completely solve it is previous since front end bearing fog lubrication gas flow is small, make bearing lubrication, heat dissipation it is insufficient, and
The stuck problem of the fever of generation.
Detailed description of the invention
Fig. 1 is oil fog lubrication electric front-end of spindle bearing seal structure schematic diagram；
Fig. 2 is outer separator structural schematic diagram.
In figure: 1, shell；2, Qian great Gai；201, preceding big lid mist of oil gas outlet passageway；202, discharge outlet；3, front end outer shaft
It holds；4, front end inner bearing；5, shaft；6, inner spacing collar；7, outer separator；701, annular mist of oil slot；702, bearing mist of oil lubrication hole；8,
Bearing (ball) cover；801, bearing (ball) cover mist of oil gas outlet passageway；9, nut；10, outer end cap.
Specific embodiment
By the following examples can detailed explanation the utility model, open the purpose of this utility model is intended to protect
All technological improvements in the scope of the utility model.
A kind of oil fog lubrication electric front-end of spindle bearing seal structure, including shell 1, preceding big lid 2, front end outer bearing 3, front end
Inner bearing 4, shaft 5, inner spacing collar 6, outer separator 7, bearing (ball) cover 8, nut 9, outer end cap 10；The shell 1 is circular tube shaped, tube wall
On be provided with mist of oil gas passage；Big lid 2 is short annulus shell-like before described, and step, the setting of inner hole right end are provided among outer circle
There is stepped hole；Mist of oil gas passage is provided on preceding big lid 2, mist of oil gas channel inlet end is located at outer circle step right end face
On, mist of oil gas passage outlet side is arranged on the circular hole face among 2 inner hole of Qian great Gai；The lower part of preceding big lid 2 is additionally provided with axis
The big lid mist of oil gas outlet passageway 201 before；Row straight down is additionally provided on preceding big lid mist of oil gas outlet passageway 201
The mouth of a river 202；The left side for being fixed on shell 1 is arranged in big lid 2 before described, and shell 1 is arranged in one end of stepped hole in right side
In inner hole；The mist of oil gas channel inlet end of preceding big lid 2 is connected with the mist of oil gas passage of shell 1；Fore bearing has two sets, point
Not Wei front end outer bearing 3 and front end inner bearing 4, front end outer bearing 3 and front end inner bearing 4 are arranged in the inner hole of Qian great Gai 2；Institute
Stating shaft 5 is Step Shaft, is set gradually from left to right including active section, seal section, thread segment, bearing construction section, bearing positioning
Section；The bearing construction section of shaft 5 is arranged in the interior sets of holes of front end outer bearing 3 and front end inner bearing 4；The front end outer bearing 3,
Inner spacing collar 6 and outer separator 7 are provided between front end inner bearing 4；Annular mist of oil slot is provided among 7 outer circumference surface of outer separator
701, trapezoidal circular step is provided among inner circle hole face；Bearing mist of oil lubrication hole 702, bearing oil are additionally provided on outer separator 7
The air inlet of mist lubrication hole 702 is arranged in annular 701 bottom of mist of oil slot, and the two sides inclined-plane of trapezoidal circular step is arranged in gas outlet
On, and bearing mist of oil lubrication hole 702 is vertical with the two sides inclined-plane of trapezoidal circular step；Annular mist of oil slot (701) and preceding big lid (2)
The outlet side of mist of oil gas passage be connected；The bearing (ball) cover 8 is the short annular shape with flange, is provided on the right side of inner hole
Step, lower part are provided with axial bearing (ball) cover mist of oil gas passage 801；The left end for being fixed on preceding big lid 2 is arranged in bearing (ball) cover 8
Face, right end face are pressed on the housing end face of front end outer bearing 3, bearing (ball) cover mist of oil gas passage 801 and preceding big lid mist of oil
Gas outlet passageway 201 is connected；The nut 9 is the round nut that outer circle has step, is arranged in 5 thread segment of shaft, spiral shell
The right side of mother 9 is pressed on the inner sleeve end face of front end outer bearing 3；The outer circle step of nut 9 and the inner hole step of bearing (ball) cover 8
Constitute the labyrinth seal structure of front end outer bearing 3, front end inner bearing 4；The outer end cap 10 is circular groove shape, setting among slot bottom
There is through-hole, the setting of outer end cap 10 is fixed on 8 left end of bearing (ball) cover, and the seal section of shaft 5, outer end is arranged in the through-hole among slot bottom
The seal section of through-hole and shaft 5 among 10 slot bottom of lid constitutes GAP TYPE sealing.
The electro spindle of this sealing structure at work, mist of oil gas passage, preceding big lid 2 of the fog lubrication gas through shell 1
Mist of oil gas passage, outer separator 7 annular mist of oil slot 701 and bearing mist of oil lubrication hole 702, blow to respectively front end outer bearing 3,
Front end inner bearing 4 carries out sufficient lubrication to front end outer bearing 3, front end inner bearing 4.
The fog lubrication gas of front end outer bearing 3 is blowed to through the space between 3 inner-outer sleeve of front end outer bearing, bearing (ball) cover 8
Labyrinth sealing gap between nut 9, the space between bearing (ball) cover 8, nut 9 and outer end cap 10, final mist of oil
Gas is lubricated to be discharged through the gap of the GAP TYPE sealing between shaft 5 and outer end cap 10；Blow to the fog lubrication of front end inner bearing 4
The space between inner-outer sleeve through front end inner bearing 4 in gas enters electro spindle space, and the premenstrual big lid mist of oil gas of a part goes out
Gas channel 201, discharge outlet 202 be discharged, another part by bearing (ball) cover mist of oil gas outlet passageway 801 enter bearing (ball) cover 8,
Space between nut 9 and outer end cap 10, final fog lubrication gas are sealed through the GAP TYPE between shaft 5 and outer end cap 10
Gap discharge.
The mist of oil gas passage of shell 1 described above, the mist of oil gas passage of preceding big lid 2,7 bearing fog lubrication of outer separator
Between labyrinth sealing between hole 702, preceding big lid mist of oil gas outlet passageway 201, discharge outlet 202, bearing (ball) cover 8 and nut 9
The area of GAP TYPE seal clearance between gap, shaft 5 and outer end cap 10 is computed determination, guarantees through shaft 5 and outer end cap 10
Between GAP TYPE sealing at capacity Zhan always input 60% or so of fog lubrication gas gross.
Using the electro spindle of this sealing structure before work, start the supply of fog lubrication gas first, then starting electricity
Main shaft enters slow-speed fast mode, after front end outer bearing 3, front end inner bearing 4 obtain sufficient lubrication, then switches into high rotary speed working
Mode.
The non-detailed portion of the utility model is the prior art.
Claims (4)
1. a kind of oil fog lubrication electric front-end of spindle bearing seal structure, including shell (1), Qian great Gai (2), front end outer bearing (3),
Front end inner bearing (4), shaft (5), inner spacing collar (6), outer separator (7), bearing (ball) cover (8), nut (9), outer end cap (10)；It is described
Shell (1) is circular tube shaped, is provided with mist of oil gas passage on tube wall；Big lid (2) is short annulus shell-like before described, is set among outer circle
It is equipped with step, inner hole right end is provided with stepped hole；Mist of oil gas passage, mist of oil gas channel inlet are provided on preceding big lid (2)
End is located in outer circle step right end face, and mist of oil gas passage outlet side is arranged on the circular hole face among Qian great Gai (2) inner hole；
Big lid (2) setting is fixed on the left side of shell (1) before described, and the one end of right side with stepped hole is arranged in the interior of shell (1)
Kong Zhong；The mist of oil gas channel inlet end of preceding big lid (2) is connected with the mist of oil gas passage of shell (1)；Fore bearing has two sets,
Respectively front end outer bearing (3) and front end inner bearing (4), front end outer bearing (3) and front end inner bearing (4) are arranged in Qian great Gai
(2) in inner hole；The shaft (5) is Step Shaft, is set gradually from left to right including active section, seal section, thread segment, bearing
Construction section, bearing positioning section；Inner sleeve of the bearing construction section setting of shaft (5) in front end outer bearing (3) and front end inner bearing (4)
Kong Zhong；Inner spacing collar (6) and outer separator (7) are provided between the front end outer bearing (3), front end inner bearing (4)；The bearing end
Covering (8) is the short annular shape with flange, and step is provided on the right side of inner hole, and bearing (ball) cover (8) setting is fixed on Qian great Gai's (2)
Left side, right end face are pressed on the housing end face of front end outer bearing (3)；The nut (9) is the circle that outer circle has step
Shape nut is arranged in shaft (5) thread segment, and the right side of nut (9) is pressed on the inner sleeve end face of front end outer bearing (3)；Institute
Stating outer end cap (10) is circular groove shape, is provided with through-hole among slot bottom；Outer end cap (10) setting is fixed on bearing (ball) cover (8) left end,
The seal section in shaft (5) is arranged in through-hole among slot bottom；It is characterized in that: the lower part of big lid (2) is additionally provided with axial direction before described
Preceding big lid mist of oil gas outlet passageway (201), bearing (ball) cover (8) lower part is additionally provided with axial bearing (ball) cover lubricator
Body channel (801), preceding big lid mist of oil gas outlet passageway (201) are connected with bearing (ball) cover mist of oil gas passage (801)；It is described
It is provided with annular mist of oil slot (701) among outer separator (7) outer circumference surface, is provided with trapezoidal circular step among inner circle hole face；Outside
Bearing mist of oil lubrication hole (702) is additionally provided on spacer (7), the air inlet setting of bearing mist of oil lubrication hole (702) is in annular oil
Mist slot (701) bottom, gas outlet is arranged on the two sides inclined-plane of trapezoidal circular step；Annular mist of oil slot (701) and preceding big lid (2)
The outlet side of mist of oil gas passage be connected.
2. oil fog lubrication electric front-end of spindle bearing seal structure according to claim 1, it is characterized in that: big lid (2) before described
Discharge outlet (202) straight down is additionally provided on the preceding big lid mist of oil gas outlet passageway (201) of lower part.
3. oil fog lubrication electric front-end of spindle bearing seal structure according to claim 1, it is characterized in that: the outer separator (7)
The two sides inclined-plane for the trapezoidal circular step being arranged among bearing mist of oil lubrication hole (702) gas outlet and inner circle hole face is vertical.
4. oil fog lubrication electric front-end of spindle bearing seal structure according to claim 1, it is characterized in that: the outer separator (7)
Annular groove is provided among annular mist of oil slot (701) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920172520.9U CN209586961U (en) | 2019-01-31 | 2019-01-31 | A kind of oil fog lubrication electric front-end of spindle bearing seal structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920172520.9U CN209586961U (en) | 2019-01-31 | 2019-01-31 | A kind of oil fog lubrication electric front-end of spindle bearing seal structure |
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| CN209586961U true CN209586961U (en) | 2019-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814879A (en) * | 2019-11-07 | 2020-02-21 | 上海机床厂有限公司 | Sealing structure of deep hole internal grinding tool |
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2019
- 2019-01-31 CN CN201920172520.9U patent/CN209586961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110814879A (en) * | 2019-11-07 | 2020-02-21 | 上海机床厂有限公司 | Sealing structure of deep hole internal grinding tool |
| CN110814879B (en) * | 2019-11-07 | 2022-03-11 | 上海机床厂有限公司 | Sealing structure of deep hole internal grinding tool |
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