CN109707746A - Bearing seal structure and electro spindle including the sealing structure - Google Patents
Bearing seal structure and electro spindle including the sealing structure Download PDFInfo
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- CN109707746A CN109707746A CN201811527170.XA CN201811527170A CN109707746A CN 109707746 A CN109707746 A CN 109707746A CN 201811527170 A CN201811527170 A CN 201811527170A CN 109707746 A CN109707746 A CN 109707746A
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- lower cover
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- ontology
- protective cover
- seal structure
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
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Abstract
The invention discloses bearing seal structure and with the electro spindle of the sealing structure, belong to machining tool apparatus field.The bearing seal structure includes lower cover, locking member and protective cover；Locking member connect to form runner assembly with protective cover, has clearance channel between lower cover and runner assembly；Under be covered with several ramp ways, ramp way extends toward close to second side surface side, and ramp way has the first gas outlet close to second side surface side, and the first gas outlet is connected to clearance channel；Runner assembly is equipped with skewed slot, and skewed slot has notch and side channel face, and side channel face is tilted toward the direction close to protective cover to be extended, and notch is connected to clearance channel；The electro spindle includes above-mentioned bearing seal structure, further includes central spindle, bearing and body ontology；The bearing seal structure passes through the cooperation of ramp way and skewed slot, so that not only ensure that sealing effect but also avoided the lubricant medium in drying bearing；Electro spindle with the sealing structure, performance is stable and the service life is long.
Description
Technical field
Electricity the present invention relates to machining tool equipment more particularly to bearing seal structure and including the bearing seal structure is main
Axis.
Background technique
Currently, industrial circle proposes the concept of industry 4.0, the application range of electro spindle with the development of modern mechanical
It is increasingly wider.Electro spindle is precise part, is widely used in high revolving speed, on high-precision machining center, core component therein
It is the main shaft bearing of high speed and precision, in high-speed cruising, any minute impurities enter main shaft bearing, may cause master
Shaft vibration, or even damage bearing, have an impact the operating accuracy and service life of main shaft, and the bearing seal structure of electro spindle is main to electricity
For the precision of axis, reliability and working life, play the role of vital.
But existing bearing seal structure has the following deficiencies:
(1) labyrinth seal structure is used, using diplarthrous sealing element, forms tortuous or step-like sealed passage, it is right
Impurity forms multilayer barrier, and to achieve the effect that dustproof and waterproof, but the sealing structure, there is also certain risk of leakage, part is micro-
Small light impurities or moisture still can enter bearing by labyrinth seal channel；
(2) air curtain sealing structure is used, using the sealing gland ring being set on main shaft, sealing gland ring is connected to external high pressure gas,
Venthole is uniformly distributed on sealing gland ring, venthole outlet blows out impurity, to achieve the effect that dustproof and waterproof；But the air curtain seals
Structure, when air blowing, portion gas can be blown toward bearing direction, not only can be by impurity band to bearing；When bearing is to be moistened using rouge
When sliding bearing, the lubricating grease on bearing can be also dried up；To reduce bearing performance, the service life of electro spindle is influenced.
Summary of the invention
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of good bearing of sealing effect is close
Seal structure.
The second object of the present invention is to provide the electro spindle of a kind of operating accuracy raising and main shaft life.
An object of the present invention adopts the following technical scheme that realization:
Bearing seal structure, including lower cover, locking member and protective cover；The locking member, which connect to be formed with the protective cover, to be turned
Dynamic component, the runner assembly have opposite first side and second side；The of the runner assembly is covered under described
Two side faces side has clearance channel between the lower cover and the runner assembly；
Several ramp ways are covered under described, the ramp way extends toward close to second side surface side, described to incline
Access ramp has the first gas outlet close to second side surface side, and first gas outlet is connected to the clearance channel；It is described
Runner assembly is equipped with skewed slot, and the skewed slot has notch and side channel face, and the side channel face is past close to the direction of the protective cover
Inclination extends, and the notch is connected to the clearance channel.
Further, the clearance channel includes First Transition gap and the second transition gap；
The First Transition gap is formed between the locking member and the lower cover, between the protective cover and the lower cover
Form second transition gap；The skewed slot is set to the locking member, and first gas outlet passes through second passage room
Gap is connected to the First Transition gap.
Further, the lower cover includes lower cover ontology and lower cover inner sleeve, and the lower cover inner sleeve is sheathed on the rotating group
Outside part, the inner wall of the lower cover inner sleeve and the runner assembly clearance fit, the outer wall of the lower cover inner sleeve and the lower cover sheet
Body connection；
The ramp way be set to the lower cover inner sleeve, the lower cover ontology be equipped with inlet channel, the inlet channel with
The ramp way connection.
Further, the protective cover includes protective cover ontology and umbrella ennation, second side of the protective cover ontology
Face is equipped with the umbrella ennation toward the direction extension far from the first side, and the umbrella ennation has toward described in
The arc extended surface of locking member direction protrusion.
Further, the clearance channel further includes third space channel, the locking member top and the lower cover ontology
Between form the third space channel, the third space channel is with the indentation clearance channel bent at least two.
Further, the lower cover inner sleeve has first set portion and second set of portion, the first set portion and the locking member
Between clearance fit, clearance fit between second set of portion and the protective cover；First gas outlet is set to described second
Set portion.
Further, the inlet channel has past close to the inclined transition passage section in the protective cover direction, the mistake
Channel section is crossed to be connected to the ramp way.
Further, the clearance channel further includes outlet clearance channel；Second side of the lower cover and the protective cover
The outlet clearance channel is formed between face, the outlet clearance channel is connected to second transition gap, between the outlet
Gap channel is indentation clearance channel.
Further, the second side of the protective cover is extended with the toward being sequentially connected on the direction far from the locking member
One vertical plane, first level face, the second vertical plane and the second horizontal plane；It is first vertical plane, the first level face, described
Mating cavity is formed between locking member, the lower cover ontology, is sheathed in the mating cavity in the lower cover；The lower cover ontology tool
Have toward the convex block extended close to the protective cover direction；
The first gap section is formed between the lower cover inner sleeve and the first level face, the convex block is vertical with described second
The second gap section, the third space section formed between the convex block and second horizontal plane are formed between face；Between the outlet
Gap channel is sequentially communicated and is formed by the first gap section, second gap section and the third space section, between described first
Gap section is connect with second transition gap.
The second object of the present invention adopts the following technical scheme that realization:
A kind of electro spindle further includes central spindle, bearing and body ontology including bearing seal structure described in above scheme；
The central spindle is arranged in the body ontology, and the bearing, the bearing are equipped between the central spindle and the body ontology
Including outer ring, inner ring and rolling assembly；
The locking member is locking nut, and the locking nut is sheathed in the central spindle and connects with the central spindle screw thread
Connect, the inner ring is fixed by the locking nut and the central spindle, the protective cover be sheathed in the central spindle and with locking
Nut connection；The lower cover ontology is connect with the body ontology, and the outer ring passes through the lower cover ontology and the body sheet
Body is fixed；There are running clearances between the rolling assembly and the lower cover ontology；
The body ontology is equipped with airflow channel, and the airflow channel is connected to the inlet channel, the inlet channel
One end far from the lower cover ontology with gas source for being connected to.
Compared with prior art, the beneficial effects of the present invention are:
(1) ramp way is set on lower lid, and the first gas outlet of ramp way is connected to clearance channel；In runner assembly
It is equipped with skewed slot, and skewed slot extends toward the direction close to protective cover, the notch of skewed slot is connected to clearance channel；Bearing seal dress
It sets when in use, blows from the gas that ramp way is blown out toward clearance channel far from the direction of bearing, there is better directionality,
The effect of better seal can be played；
(2) when runner assembly rotates about axis rotation, because centrifugal force difference generates draught head in skewed slot, so that skewed slot
The interior air-flow that can be formed away from rotation axis direction, the air-flow blown out from skewed slot notch can be toward the directions close to protective cover
It blows, for offsetting the gas blown from the possibility that ramp way is blown out from air curtain sealing structure toward bearing direction, i.e., toward approach locking
The gas that direction at the top of part is blown, i.e., the gas blown close to the direction of bearing play the distinguished and admirable drying axis for preventing air curtain sealing
Hold the effect of lubricating grease；
(3) ramp way of the side channel face of skewed slot and lower cover extends toward the direction close to protective cover, so that by draught head
The counteracting air-flow for generating (generating in skewed slot), with the air curtain blanket gas for realizing air curtain sealing effect for flowing through ramp way
Stream cooperation, has better directionality, enables air curtain sealing air-flow smoothly rapidly along clearance channel toward bearing seal knot
Direction (toward the direction far from bearing) flowing outside structure, enhances the effect of water proof and dust proof.
Detailed description of the invention
Fig. 1 is the cross-sectional view of bearing seal structure of the invention；
Fig. 2 is the cross-sectional view of the electro spindle equipped with bearing seal structure of the invention；
Fig. 3 is the structural schematic diagram of lower cover inner sleeve of the invention；
Fig. 4 is the cross-sectional view of lower cover inner sleeve of the invention；
Fig. 5 is the cross-sectional view of locking member of the invention；
In figure: 100, runner assembly；101, skewed slot；1011, side channel face；110, locking member；1101, the first convex block；1102,
First groove；120, protective cover；1201, umbrella ennation；1202, arc extended surface；200, lower cover；201, ramp way；
2011, the first gas outlet；210, lower cover ontology；2101, inlet channel；220, lower cover inner sleeve；301, third space channel；
3021, the first gap section；3022, the second gap section；3023, third space section；400, central spindle；500, bearing；600, body sheet
Body；601, airflow channel.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the present invention, it should be noted that not
Under the premise of conflicting, new implementation can be formed between various embodiments described below or between each technical characteristic in any combination
Example.
It should be noted that bearing seal structure of the invention can be not only used for electro spindle to realize the sealing to bearing
(electro spindle that such as can be used for horizontal Machining centers) can be also used for other axle construction to realize sealing.
As shown in Fig. 1~5, bearing seal structure, including lower cover 200, locking member 110 and protective cover are present embodiments provided
120, locking member 110 connect to form runner assembly 100 with protective cover 120, and runner assembly 100 has opposite first side and the
Two side faces, lower cover 200 are set to second side surface side of runner assembly 100, logical with gap between lower cover 200 and runner assembly 100
Road；The bearing seal structure when in use, for being installed on main shaft, the first side of runner assembly 100 connect with main shaft with
Realize that the synchronous rotation with main shaft, lower cover 200 are connect with body, lower cover 200 is for cooperating runner assembly 100 to realize sealing effect
Fruit is sealed with realizing to bearing 500, and there are clearance channel, the inside ends of clearance channel between runner assembly 100 and lower cover 200
Mouth is connected to 500 bottom surface of bearing, and clearance channel outside port is connected to bearing seal structure (or outside main shaft), to guarantee main shaft
When relative to body rotation, opposite pivoting can occur for runner assembly 100 and lower cover 200.
Specifically, in order to improve the sealing effect to bearing 500, overcome labyrinth seal structure in the prior art and air curtain close
Defect present in seal structure, as shown in Fig. 1,3,4, lower cover 200 be equipped with several ramp ways 201, ramp way 201 be used for
Gas source connection, to be passed through gas or high pressure gas, ramp way 201 extends toward close to second side surface side, and ramp way 201 is close
Second side surface side has the first gas outlet 2011, and the first gas outlet 2011 is connected to clearance channel, and gas is past along ramp way 201
The outside port of clearance channel is blown out, and is entered in bearing 500 to avoid impurity or moisture along clearance channel, guarantees bearing 500
Sealing effect；Runner assembly 100 is equipped with skewed slot 101, and skewed slot 101 can be set on locking member 110, can also be set to protective cover
On 120, as shown in Figure 1,5, skewed slot 101 has notch and side channel face 1011, and side channel face 1011 is past close to the direction of protective cover 120
Inclination extends, and notch is connected to clearance channel, when runner assembly 100 and the cooperation synchronous rotation of main shaft central spindle 400, due to side channel
1011 upper end of face is more nearly rotation axis than lower end, and when runner assembly 100 rotates, generating 1011 both ends of side channel face has air pressure
Difference forms the air-flow far from rotation axis direction, and air-flow blows to clearance channel, so that the counteracting gas of 101 notch of skewed slot blowout
Stream can offset the air-flow (air curtain sealing air-flow) that may be blown from ramp way 201 toward 500 direction of bearing, avoid air-flow and blow to
Bearing 500 dries up lubricating grease or other lubricant mediums in bearing 500, to guarantee bearing 500 when guaranteeing that bearing 500 seals
Normal work.
Specifically, when the bearing seal structure when in use, the air-flow blown out from 101 notch of skewed slot toward clearance channel be to
It cools down stream, is that air curtain seals air-flow from the blowout of ramp way 201 and toward the air-flow of clearance channel outside port flowing, is led to by inclination
The blowout of road 201 and the air-flow flowed toward clearance channel internal port are interference air-flow.
Specifically, by lower cover 200 be arranged ramp way 201, the first gas outlet 2011 of ramp way 201 and
The connection of gap channel；Skewed slot 101 is equipped on runner assembly 100, and skewed slot 101 extends toward the direction close to protective cover 120, skewed slot
101 notch is connected to clearance channel；500 sealing device of bearing when in use, due to 201 relative gap channel of ramp way
It is obliquely installed, air curtain, which seals air-flow, has better directionality, can play the effect of better seal；And the side of skewed slot 101
The ramp way 201 of groove face 1011 and lower cover 200 extends toward the direction close to protective cover 120,101 side channel face of skewed slot, 1011 phase
Clearance channel is obliquely installed, so that offsetting air-flow also has preferable directionality, so that offsetting air-flow can be not only used for
Stop interference air-flow to flow toward clearance channel internal port and dry up 500 lubricant medium of bearing to avoid gas, offsets air-flow also
Help air curtain sealing air-flow smoothly rapidly along clearance channel toward the direction of clearance channel outside port (toward far from bearing 500
Direction) flowing, enhance the sealing effect of water proof and dust proof.
Preferably, in order to runner assembly 100 rotate when generate more powerful counteracting air-flow, the quantity of skewed slot 101
To be multiple, skewed slot 101 is vertically spaced setting.101 quantity of skewed slot of the present embodiment is 2.
Preferably, in order to enable offsetting air-flow can effectively stop to interfere air-flow toward locking member 110 far from protective cover 120
Side flowing, the distance at skewed slot 101 to 110 top of locking member are greater than the first gas outlet 2011 to the distance at 110 top of locking member.
It is flowed at the top of locking member 110 it is, of course, also possible to be accomplished by the following way to offset airflow-resistive air curtain blanket gas and flow to
Dynamic: 101 side channel face 1011 of skewed slot is less than ramp way 201 relative to protective cover relative to the tilt angle of 120 bottom of protective cover
The tilt angle of 120 bottoms, and in radial directions, the first gas outlet 2011 relative to skewed slot 101 notch farther away from lock
Tight 110 top of part or the projection in the radial direction of the first gas outlet 2011 are covered by the projection in the radial direction of 101 notch of skewed slot；Pass through
The tilt angle setting of ramp way 201 is larger, it is had more so that the air-flow blown out by ramp way 201 is opposite with counteracting air-flow
The directionality for having past clearance channel outside port direction to circulate so that not allowing to be also easy to produce interference air-flow, and to offset air-flow more
It is easy to stop interference air-flow.
Preferably, the counteracting gas for the ease of being generated in skewed slot 101 when runner assembly 100 is rotated around rotation axis
Stream can preferably stop to interfere air-flow, and clearance channel includes First Transition gap and the second transition gap；Locking member 110 is under
First Transition gap is formed between lid 200, and the second transition gap is formed between protective cover 120 and lower cover 200；Skewed slot 101 is set to
Locking member 110, the first gas outlet 2011 are connected to by the second transition gap with First Transition gap.
Specifically, in order to effectively improve the negative function of the counteracting air-flow blown out by skewed slot 101, First Transition gap and the
Two transition gaps connect to form linear type transition gap, by above-mentioned setting, so that the air-flow that is blown out by ramp way 201 and supporting
After stream of cooling down enters linear type transition gap, offsets air-flow and may act on along linear type transition gap and blown by ramp way 201
Air-flow out not only may be implemented to shift to install in 101 notch of skewed slot and the first gas outlet 2011, but also skewed slot 101 can be made to blow
Counteracting air-flow out passes through least loss, can be used to stop interference air-flow, the barrier effectiveness for offsetting air-flow is effectively ensured.
Preferably, air curtain sealing is realized for convenience, and lower cover 200 includes lower cover ontology 210 and lower cover inner sleeve 220, lower cover
Inner sleeve 220 is sheathed on outside runner assembly 100, the inner wall and 100 clearance fit of runner assembly of lower cover inner sleeve 220, lower cover inner sleeve 220
Outer wall connect with lower cover ontology 210；Ramp way 201 is set to lower cover inner sleeve 220, and lower cover ontology 210 is equipped with inlet channel
2101, inlet channel 2101 is connected to ramp way 201.
Specifically, lower cover inner sleeve 220 is cyclic annular inner sleeve, and lower cover inner sleeve 220 is set with being evenly spaced around center axis thereof
Several ramp ways 201 are equipped with, to effectively improve air curtain sealing effect.
Preferably, in order to further avoid the bearing seal structure when in use, external process environment splash liquid or
Impurity (such as cutting fluid, chip, gas) enters clearance channel；Protective cover 120 includes 120 ontology of protective cover and umbrella ennation
1201, the second side of 120 ontology of protective cover extends toward the direction far from first side is equipped with umbrella ennation 1201, and umbrella is prolonged
Stretching body 1201 has the arc extended surface 1202 toward 110 direction of approach locking part protrusion, and arc extended surface 1202 is outside turnup
Shape, external process environment splash liquid can be thrown away by the big end outer circle of arc extended surface 1202, in runner assembly 100
When rotation (in spindle operation), arc extended surface 1202 cooperates the water dumping better effect realized of 120 ontology of protective cover.
Preferably, in order to reinforce sealing effect, clearance channel further includes third space channel 301,110 top of locking member with
Third space channel 301 is formed between lower cover ontology 210, third space channel 301 is with the indentation bent at least two
Clearance channel, i.e., so that successively having on from clearance channel outside port toward the channel extending direction of clearance channel internal port
Air curtain seals (air curtain sealing air-flow), dynamic pressure sealing (offsetting air-flow) and labyrinth seal (third space channel 301), so that i.e.
When making to interfere air-flow by also there is portion gas to flow to clearance channel internal port after counteracting airflow-resistive, third space channel
301 complications can effectively weaken the intensity of residual interference air-flow, and being effectively ensured " will not using the axle sealing structure that air curtain seals
Cause the lubricant medium in bearing 500 dry ".
Specifically, as shown in Figure 1,5, locking member 110 has the first convex block 1101 and the first groove far from 120 side of protective cover
1102, lower cover ontology 210 has the second convex block and the second groove close to 120 side of protective cover, and the second convex block is inserted into the first groove
1102, the first convex block 1101 is inserted into the second groove, to form tortuous third space channel 301.
Preferably, 101 notch of skewed slot is arranged in a staggered manner with the first gas outlet 2011, lower cover inner sleeve 220 has
There are first set portion and second set of portion, clearance fit between first set portion and locking member 110, between second set of portion and protective cover 120
Clearance fit；Skewed slot 101 is set to locking member 110, and the first gas outlet 2011 is set to second set of portion.
Preferably, in order to improve the effect that the inclination of ramp way 201 is blown, inlet channel 2101, which has toward close, states protection
The inclined transition passage section in 120 direction of lid, transition passage section are connected to ramp way 201.
Preferably, clearance channel further includes outlet clearance channel；Shape between lower cover 200 and the second side of protective cover 120
At outlet clearance channel, outlet clearance channel is connected to the second transition gap, and outlet clearance channel is indentation clearance channel, this
When sample makes impurity to enter clearance channel by external process environment, the not only blocking by tortuous outlet clearance channel, but also
By the blocking of air curtain sealing air-flow, sealing effect is significantly increased.
Preferably, tortuous outlet clearance channel is formed for convenience, and the second side of protective cover 120 is toward far from locking member
It is sequentially connected on 110 direction and is extended with the first vertical plane, first level face, the second vertical plane and the second horizontal plane；First is perpendicular
It faces directly, first level face, locking member 110, form mating cavity between lower cover ontology 210, lower cover inner sleeve 220 is set in mating cavity；
Lower cover ontology 210 has toward the convex block extended close to 120 direction of protective cover；It is formed between lower cover inner sleeve 220 and first level face
First gap section 3021 forms the second gap section 3022, shape between convex block and the second horizontal plane between convex block and the second vertical plane
At third space section 3023；Outlet clearance channel is by the first gap the 3021, second gap of section section 3022 and third space section
3023 are sequentially communicated to be formed, and the first gap section 3021 is connect with the second transition gap.
As shown in Fig. 2, the present embodiment additionally provides a kind of electro spindle, which includes bearing documented by above scheme
Sealing structure further includes central spindle 400, bearing 500 and body ontology 600；Central spindle 400 is arranged in body ontology 600, central spindle
Bearing 500 is equipped between 400 and body ontology 600, bearing 500 includes outer ring, inner ring and rolling assembly；Locking member 110 is lock
Tight nut, locking nut are sheathed in central spindle 400 and are threadedly coupled with central spindle 400, and inner ring is solid by locking nut and central spindle 400
Fixed, protective cover 120 is sheathed in central spindle 400 and connect with locking nut；Lower cover ontology 210 is connect with body ontology 600, outer ring
It is fixed by lower cover ontology 210 and body ontology 600；There are running clearances between rolling assembly and lower cover ontology 210；Body sheet
Body 600 is equipped with airflow channel 601, and airflow channel 601 is connected to inlet channel 2101, and inlet channel 2101 is far from lower cover ontology
210 one end with gas source for being connected to.The electro spindle of above-mentioned bearing seal structure is used, sealing effect is good, is conducive to improve
The operating accuracy of electro spindle, 500 performance of stable bearing increase electro spindle service life.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (10)
1. bearing seal structure, it is characterised in that:
Including lower cover, locking member and protective cover；The locking member connect to form runner assembly with the protective cover, the rotating group
Part has opposite first side and second side；Second side surface side of the runner assembly, the lower cover are covered under described
There is clearance channel between the runner assembly；
Several ramp ways are covered under described, the ramp way extends toward close to second side surface side, and the inclination is logical
Road has the first gas outlet close to second side surface side, and first gas outlet is connected to the clearance channel；The rotation
Component is equipped with skewed slot, and the skewed slot has notch and side channel face, and the side channel face is tilted toward the direction close to the protective cover
Extend, the notch is connected to the clearance channel.
2. bearing seal structure as described in claim 1, it is characterised in that:
The clearance channel includes First Transition gap and the second transition gap；
The First Transition gap is formed between the locking member and the lower cover, is formed between the protective cover and the lower cover
Second transition gap；The skewed slot is set to the locking member, first gas outlet by second transition gap and
The First Transition gap connection.
3. bearing seal structure as claimed in claim 2, it is characterised in that:
The lower cover includes lower cover ontology and lower cover inner sleeve, and the lower cover inner sleeve is sheathed on outside the runner assembly, the lower cover
The inner wall of inner sleeve and the runner assembly clearance fit, the outer wall of the lower cover inner sleeve are connect with the lower cover ontology；
The ramp way be set to the lower cover inner sleeve, the lower cover ontology be equipped with inlet channel, the inlet channel with it is described
Ramp way connection.
4. bearing seal structure as described in claim 1, it is characterised in that:
The protective cover includes protective cover ontology and umbrella ennation, and the second side of the protective cover ontology is toward far from described the
The direction of one side, which extends, is equipped with the umbrella ennation, and the umbrella ennation, which has toward close to the locking member direction, to be protruded
Arc extended surface.
5. bearing seal structure as claimed in claim 3, it is characterised in that:
The clearance channel further includes third space channel, forms described the at the top of the locking member between the lower cover ontology
Three clearance channels, the third space channel are with the indentation clearance channel bent at least two.
6. bearing seal structure as claimed in claim 3, it is characterised in that:
The lower cover inner sleeve is with first set portion and second set of portion, clearance fit between the first set portion and the locking member,
Clearance fit between second set of portion and the protective cover；First gas outlet is set to second set of portion.
7. bearing seal structure as claimed in claim 3, it is characterised in that:
The inlet channel has toward close to the inclined transition passage section in the protective cover direction, the transition passage section with it is described
Ramp way connection.
8. such as bearing seal structure described in claim 5 or 6, it is characterised in that:
The clearance channel further includes outlet clearance channel；Described in being formed between the lower cover and the second side of the protective cover
Outlet clearance channel, the outlet clearance channel are connected to second transition gap, and the outlet clearance channel is indentation
Clearance channel.
9. bearing seal structure as claimed in claim 8, it is characterised in that:
The second side of the protective cover is toward being sequentially connected and be extended with the first vertical plane, first on the direction far from the locking member
Horizontal plane, the second vertical plane and the second horizontal plane；First vertical plane, the first level face, the locking member, it is described under
Mating cavity is formed between lid ontology, is sheathed in the mating cavity in the lower cover；The lower cover ontology has toward described in
The convex block that protective cover direction extends；
Form the first gap section between the lower cover inner sleeve and the first level face, the convex block and second vertical plane it
Between formed the second gap section, the third space section formed between the convex block and second horizontal plane；The outlet gap is logical
Road is sequentially communicated and is formed by the first gap section, second gap section and the third space section, the first gap section
It is connect with second transition gap.
10. a kind of electro spindle, including such as the described in any item bearing seal structures of claim 3-9, it is characterised in that:
It further include central spindle, bearing and body ontology；The central spindle is arranged in the body ontology, the central spindle and the body
The bearing is equipped between ontology, the bearing includes outer ring, inner ring and rolling assembly；
The locking member is locking nut, and the locking nut is sheathed in the central spindle and is threadedly coupled with the central spindle, institute
It states inner ring to fix by the locking nut and the central spindle, the protective cover is sheathed in the central spindle and connects with locking nut
It connects；The lower cover ontology is connect with the body ontology, and the outer ring is fixed by the lower cover ontology and the body ontology；
There are running clearances between the rolling assembly and the lower cover ontology；
The body ontology is equipped with airflow channel, and the airflow channel is connected to the inlet channel, and the inlet channel is separate
One end of the lower cover ontology with gas source for being connected to.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811527170.XA CN109707746B (en) | 2018-12-13 | 2018-12-13 | Bearing sealing structure and electric spindle comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811527170.XA CN109707746B (en) | 2018-12-13 | 2018-12-13 | Bearing sealing structure and electric spindle comprising same |
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| CN109707746A true CN109707746A (en) | 2019-05-03 |
| CN109707746B CN109707746B (en) | 2021-04-30 |
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| CN111360694A (en) * | 2020-04-01 | 2020-07-03 | 深圳市爱贝科精密机械有限公司 | Air seal mechanism for front end of main shaft |
| CN111716245A (en) * | 2020-06-03 | 2020-09-29 | 广州市昊志机电股份有限公司 | Main shaft structure |
| CN112025395A (en) * | 2020-09-14 | 2020-12-04 | 深圳市爱贝科精密机械有限公司 | Front end air seal mechanism of lathe spindle |
| CN112122630A (en) * | 2020-09-27 | 2020-12-25 | 泉州市井贺精密设备有限公司 | Main shaft seal structure and tool turret |
| CN113915336A (en) * | 2021-10-19 | 2022-01-11 | 珠海格力电器股份有限公司 | Air curtain seal structure, electric main shaft and machine tool equipment |
| CN114042945A (en) * | 2021-11-08 | 2022-02-15 | 沈阳城市建设学院 | Drilling and tapping spindle combined type pneumatic 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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| WO1997036111A1 (en) * | 1996-03-26 | 1997-10-02 | Quantum Corporation | Hydrodynamic bearing having lubricant particle traps |
| JPH10252761A (en) * | 1997-03-10 | 1998-09-22 | Showa:Kk | Dust cover structure of center bearing |
| JP2006125554A (en) * | 2004-10-29 | 2006-05-18 | Matsuura Machinery Corp | Non-contact seal structure for rotating shaft |
| CN101216111A (en) * | 2008-01-04 | 2008-07-09 | 洛阳轴研科技股份有限公司 | Method for implementing bearing hermetic sealing for machining inner screw thread copper pipe |
| CN102694435A (en) * | 2011-03-25 | 2012-09-26 | 日本电产株式会社 | Spindle motor and storage disk drive |
| CN203717918U (en) * | 2013-12-31 | 2014-07-16 | 广州市昊志机电股份有限公司 | Rotary oil seal structure of blender main shaft |
| CN204042008U (en) * | 2014-06-27 | 2014-12-24 | 深圳市速锋科技有限公司 | The forward end seal structure of mechanical main shaft |
| CN203979415U (en) * | 2014-07-25 | 2014-12-03 | 北京机电院机床有限公司 | A kind of gas sealing mechanism of machine tool chief axis |
| CN104613180A (en) * | 2014-09-25 | 2015-05-13 | 广州市昊志机电股份有限公司 | Improved electric spindle sealing structure and spindle core sealing device |
| CN204387334U (en) * | 2014-12-26 | 2015-06-10 | 广州市昊志机电股份有限公司 | Lathe spindle nose sealing configuration |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111360694A (en) * | 2020-04-01 | 2020-07-03 | 深圳市爱贝科精密机械有限公司 | Air seal mechanism for front end of main shaft |
| CN111716245A (en) * | 2020-06-03 | 2020-09-29 | 广州市昊志机电股份有限公司 | Main shaft structure |
| CN112025395A (en) * | 2020-09-14 | 2020-12-04 | 深圳市爱贝科精密机械有限公司 | Front end air seal mechanism of lathe spindle |
| CN112122630A (en) * | 2020-09-27 | 2020-12-25 | 泉州市井贺精密设备有限公司 | Main shaft seal structure and tool turret |
| CN113915336A (en) * | 2021-10-19 | 2022-01-11 | 珠海格力电器股份有限公司 | Air curtain seal structure, electric main shaft and machine tool equipment |
| CN114042945A (en) * | 2021-11-08 | 2022-02-15 | 沈阳城市建设学院 | Drilling and tapping spindle combined type pneumatic sealing structure |
| CN114042945B (en) * | 2021-11-08 | 2024-05-28 | 沈阳城市建设学院 | Drilling and tapping machine main shaft combined pneumatic 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 |
| CN114251374B (en) * | 2021-12-31 | 2024-06-07 | 昆山顺之晟精密机械有限公司 | Annular wire cutting bearing seat |
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