CN209229024U - A kind of sealing structure of horizontal main axis - Google Patents
A kind of sealing structure of horizontal main axis Download PDFInfo
- Publication number
- CN209229024U CN209229024U CN201821630396.8U CN201821630396U CN209229024U CN 209229024 U CN209229024 U CN 209229024U CN 201821630396 U CN201821630396 U CN 201821630396U CN 209229024 U CN209229024 U CN 209229024U
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- end cap
- sealing
- central spindle
- sealing gland
- main axis
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Abstract
The utility model discloses a kind of sealing structures of horizontal main axis, including body, bearing, end cap and central spindle, the outer ring of bearing is fixed on the inner wall of body, body one end is fixed in end cap one end, and it is mutually pressed with the end face of body, central spindle successively wears the inner ring and end cap of joint bearing, and between body and central spindle, central spindle is rotatably installed on body bearing by bearing；It further include air curtain labyrinth seal structure, air curtain labyrinth seal structure is between end cap and central spindle；The outside wall surface of end cap offers revolution deep gouge, and revolution deep gouge is located at the side of air curtain labyrinth seal structure.The utility model can effectively reduce the entrance of coolant liquid, improve the sealing effect of main shaft.
Description
Technical field
The utility model relates to a kind of technology of main shaft seal more particularly to a kind of sealing structures of horizontal main axis.
Background technique
Main shaft is mounted on a variety of different lathes, for the processing to various parts, however in the process of part processing
In, need spray cooling liquid to be cooled down to cutter and part, lubricated, while can also generate the dirts such as iron filings in the process,
And the cooperation required precision of certain parts is very high inside main shaft, enters if any dirts such as coolant liquid or iron filings, can shorten
The service life of main shaft inner body, seriously will lead to equipment damage.
Main shaft is broadly divided into two kinds by modes of emplacement: one is vertical spindle, another kind is horizontal main axis.Existing horizontal master
The sealing structure of axis is mostly air curtain labyrinth sealing, and the centrifugal force and gas generated by rotation generates certain pressure and reaches
Sealing effect；But when coolant rate super large or static main shaft, coolant liquid directly contacts air curtain labyrinth seal structure,
Situations such as sealing effect of air curtain labyrinth seal structure will be had a greatly reduced quality or even be will appear into coolant liquid, makes the sealing effect of main shaft
It cannot be guaranteed.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sealing knots of horizontal main axis
Structure can effectively reduce the entrance of coolant liquid, improve the sealing effect of main shaft.
The purpose of this utility model adopts the following technical scheme that realization:
A kind of sealing structure of horizontal main axis, including body, bearing, end cap and central spindle, the outer ring of the bearing are fixed on
On the inner wall of body, body one end is fixed in described end cap one end, and mutually presses with the end face of the body, and the central spindle is successively
The inner ring and end cap of joint bearing are worn, between body and central spindle, the central spindle is rotatably mounted the bearing by bearing
In on body；
It further include air curtain labyrinth seal structure, the air curtain labyrinth seal structure is between end cap and central spindle；
The outside wall surface of the end cap offers revolution deep gouge, and the revolution deep gouge is located at the one of air curtain labyrinth seal structure
Side.
Further, the revolution deep gouge is obliquely installed.
Further, further include locking nut, the central spindle, which is worn, connects the locking nut, the locking nut and central spindle it
Between be connected through a screw thread, for the locking nut between end cap and central spindle, the air curtain labyrinth seal structure is located at locking screw
Between female and end cap.
It further, further include sealing gland block, the sealing gland block is between locking nut and end cap, the end cap and sealing gland
Block interference fit, the air curtain labyrinth seal structure is between locking nut and sealing gland block.
Further, the air curtain labyrinth seal structure includes the first clearance channel, the second clearance channel and sealed passage,
The sealing gland block and locking nut are separated by form the first clearance channel, and the end cap and locking nut are separated by that form the second gap logical
Road, for second clearance channel for being connected to the inside of central spindle, first clearance channel one end and second gap are logical
The connection of road one end, forms the sealed passage of bending, air inlet is offered on the end cap, offers sealing gland on the sealing gland block
Hole, the gentle sealing of hole connection of air inlet, the sealing gland hole are connected to the first clearance channel, and the revolution deep gouge is between first
The side in gap channel.
Further, the quantity in the sealing gland hole is set as multiple, and multiple sealing gland holes are around the circumferencial direction of sealing gland block
Arrangement.
Further, the central axes in the central axes of the air inlet and sealing gland hole are at least staggered 15 °.
Further, the end cap is equipped with plug, and the plug is fixed on one end of air inlet, and the plug with
End cap interference fit.
Compared with prior art, the utility model has the beneficial effects that:
When coolant rate super large or static central spindle, since the outside wall surface of end cap offers revolution deep gouge, revolution is heavy
Slot position in the side of air curtain labyrinth seal structure, therefore be sprayed onto revolution deep gouge position coolant liquid under gravity, along return
Turn deep gouge to flow away, effectively reduce coolant liquid and flow into air curtain labyrinth seal structure, that is, can be reduced coolant liquid and pass through air curtain labyrinth seal
Structure enters the inside of central spindle, and then guarantees that, in coolant rate super large or static central spindle, horizontal main axis still is able to protect
Hold sealing effect.So as to effectively reduce the entrance of coolant liquid, the sealing effect of horizontal main axis is improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of A in Fig. 1；
Fig. 3 is the structural schematic diagram of sealing gland block；
In figure: 1, body；2, bearing；3, end cap；4, central spindle；5, tooling hole；6, the first clearance channel；7, the second gap is logical
Road；8, sealed passage；9, deep gouge is turned round；10, locking nut；11, sealing gland block；12, air inlet；13, sealing gland hole；14, plug.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
A kind of sealing structure of horizontal main axis as shown in Figs. 1-3, including body 1, bearing 2, end cap 3 and central spindle 4, bearing
2 outer ring is fixed on the inner wall of body 1, and 1 one end of body is fixed in 3 one end of end cap, and mutually presses with the end face of body 1, axis
Core 4 successively wears the inner ring and end cap 3 of joint bearing 2, and between body 1 and central spindle 4, central spindle 4 can be rotated bearing 2 by bearing 2
Ground is installed on body 1；
It further include air curtain labyrinth seal structure, air curtain labyrinth seal structure is between end cap 3 and central spindle 4；
The outside wall surface of end cap 3 offers revolution deep gouge 9, and revolution deep gouge 9 is located at the side of air curtain labyrinth seal structure.
On the basis of above structure, the injection direction of coolant liquid as illustrated by the arrows in fig. 1, when coolant rate super large
Or central spindle 4 it is static when, due to the outside wall surface of end cap 3 offer revolution deep gouge 9, revolution deep gouge 9 be located at air curtain labyrinth seal knot
The side of structure, therefore the coolant liquid for being sprayed onto revolution 9 position of deep gouge is under gravity, flows away, effectively reduces along revolution deep gouge 9
Coolant liquid flows into air curtain labyrinth seal structure, that is, can be reduced the inside that coolant liquid enters central spindle 4 by air curtain labyrinth seal structure,
And then guarantee that sealing effect can still be maintained in horizontal main axis in coolant rate super large or static central spindle 4.So as to
The entrance for effectively reducing coolant liquid improves the sealing effect of horizontal main axis.In addition, the end cap 3 of the present embodiment can be and pass through spiral shell
Nail is fixed on body 1, helps to improve the stability of connection structure between end cap 3 and body 1.
Specifically, the sealing structure of this horizontal main axis further includes locking nut 10, and central spindle 4, which is worn, connects locking nut 10, locking
It is connected through a screw thread between nut 10 and central spindle 4, is locked in locking nut 10 in central spindle 4, more specifically, on locking nut 10
Equipped with tooling hole 5, make it possible to realize the locking or disassembly of locking nut 10 by tooling hole 5.Locking nut 10 is located at end
Between lid 3 and central spindle 4, air curtain labyrinth seal structure is between locking nut 10 and end cap 3.
More specifically, the sealing structure of this horizontal main axis further includes sealing gland block 11, sealing gland block 11 be located at locking nut 10 with
Between end cap 3, end cap 3 and sealing gland block 11 are interference fitted, air curtain labyrinth seal structure be located at locking nut 10 and sealing gland block 11 it
Between.Preferably, end cap 3 and sealing gland block 11 are interference fitted and prevent from being conducive to improve horizontal main axis into water in mating surface gluing
Sealing effect.
In addition, air curtain labyrinth seal structure includes the first clearance channel 6, the second clearance channel 7 and sealed passage 8, sealing gland
The inner wall of block 11 and the outside wall surface of locking nut 10 are separated by form the first clearance channel 6, the inner wall and locking nut of end cap 3
10 outside wall surface is separated by form the second clearance channel 7, and for the second clearance channel 7 for being connected to the inside of central spindle 4, the first gap is logical
6 one end of road is connected to 7 one end of the second clearance channel, is formed the sealed passage 8 of bending, is offered air inlet 12, sealing gland on end cap 3
Offer sealing gland hole 13 on block 11, the gentle sealing of hole 13 of air inlet 12 connection, sealing gland hole 13 is connected to the first clearance channel 6, i.e., into
Stomata 12 is connected to by sealing gland hole 13 with the realization of the first clearance channel 6, and revolution deep gouge 9 is located at the side of the first clearance channel 6.This
The first clearance channel 6 is connected to the sealed passage 8 for forming bending with the second clearance channel 7 in embodiment, increases clearance channel
Tortuosity can effectively reduce the inside that coolant liquid enters central spindle 4 by air curtain labyrinth seal structure, be conducive to strengthen horizontal master
The sealing effect of axis.
It is noted that the quantity in sealing gland hole 13 is set as multiple, and multiple sealing gland holes 13 are around the circumference side of sealing gland block 11
To arrangement.
It is emphasized that being passed through the gas of certain air pressure into air inlet 12, gas enters sealing gland hole through air inlet 12
13, the central axes of the air inlet 12 and the central axes in sealing gland hole 13 are at least staggered 15 °, are conducive to gas in end cap 3 and sealing gland block
It is uniformly distributed between 11, gas is enabled to enter the first clearance channel 6 quickly through each sealing gland hole 13, since gas is from first
Clearance channel 6 flows out horizontal main axis, if coolant liquid is intended to enter first clearance channel 6, flow direction and coolant liquid because of gas
Flow direction is on the contrary, make coolant liquid be difficult to effectively reduce cold from the first clearance channel 6 into air curtain labyrinth seal structure
But liquid enters air curtain labyrinth seal structure, improves the sealing effect of horizontal main axis.It is of course also possible to according to practical 13 cloth of sealing gland hole
It sets situation and carries out angle adjustment.
As preferable embodiment a kind of in the present embodiment, it is obliquely installed revolution deep gouge 9, specifically, the revolution is heavy
Slot 9 is tilted toward the direction close to sealing gland block 11, and design in this way accelerates coolant liquid and flow into revolution deep gouge 9 convenient for aggregation coolant liquid, from
And accelerate coolant liquid outflow horizontal main axis, effectively reduce the first clearance channel 6 of entrance of coolant liquid, i.e. air curtain labyrinth seal structure
Sealing effect be guaranteed, improve the sealing effect of horizontal main axis.
In addition, end cap 3 is equipped with plug 14, plug 14 is fixedly installed on one end of air inlet 12, and plug 14 and end
Lid 3 is interference fitted, to achieve the purpose that prevent gas leakage.
More preferably embodiment is, end cap 3 in the present embodiment, sealing gland block 11, the connection structure between plug 14 is can not
The structure of disassembly is conducive to the rigidity for improving the sealing structure of horizontal main axis, improves sealing effect.
To sum up, when central spindle 4 is static, due to turning round the guiding drainage of deep gouge 9, by coolant liquid or the impact side of dust
To changing and guiding its flow direction, flow down liquid or dust along angularly disposed revolution deep gouge 9, greatly enhancing leakproofness
Energy；When central spindle 4 rotates, due to turning round the guiding drainage of deep gouge 9, return most coolant liquid along angularly disposed
Turn deep gouge 9 to flow down, only micro coolant liquid touches air curtain labyrinth seal structure, to prevent from entering air curtain labyrinth seal structure
Coolant liquid and central spindle 4 interior contact, the gas of certain air pressure is passed through into air inlet 12, using gas prevention coolant liquid into
Enter the first clearance channel 6, even if the flow that coolant liquid touches air curtain labyrinth seal structure is minimum, enhances air curtain labyrinth at double
Sealing performance.To improve the sealing effect of horizontal main axis.
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to
In the utility model range claimed.
Claims (8)
1. a kind of sealing structure of horizontal main axis, it is characterised in that: including body, bearing, end cap and central spindle, outside the bearing
Ring is fixed on the inner wall of body, and body one end is fixed in described end cap one end, and mutually presses with the end face of the body, described
Central spindle successively wears the inner ring and end cap of joint bearing, and between body and central spindle, the central spindle can be turned the bearing by bearing
It is installed on body dynamicly；
It further include air curtain labyrinth seal structure, the air curtain labyrinth seal structure is between end cap and central spindle；
The outside wall surface of the end cap offers revolution deep gouge, and the revolution deep gouge is located at the side of air curtain labyrinth seal structure.
2. the sealing structure of horizontal main axis as described in claim 1, it is characterised in that: the revolution deep gouge is obliquely installed.
3. the sealing structure of horizontal main axis as claimed in claim 2, it is characterised in that: it further include locking nut, the central spindle
It wears and connects the locking nut, be connected through a screw thread between the locking nut and central spindle, the locking nut is located at end cap and axis
Between core, the air curtain labyrinth seal structure is between locking nut and end cap.
4. the sealing structure of horizontal main axis as claimed in claim 3, it is characterised in that: it further include sealing gland block, the sealing gland block
Between locking nut and end cap, the end cap and sealing gland block are interference fitted, and the air curtain labyrinth seal structure is located at locking
Between nut and sealing gland block.
5. the sealing structure of horizontal main axis as claimed in claim 4, it is characterised in that: the air curtain labyrinth seal structure includes
First clearance channel, the second clearance channel and sealed passage, the sealing gland block and locking nut are separated by form the first clearance channel,
The end cap and locking nut are separated by form the second clearance channel, and second clearance channel is used to be connected to the inside of central spindle,
First clearance channel one end is connected to second clearance channel one end, forms the sealed passage of bending, on the end cap
Air inlet is offered, sealing gland hole, the gentle sealing of hole connection of air inlet, the sealing gland hole and first are offered on the sealing gland block
Clearance channel connection, the revolution deep gouge are located at the side of the first clearance channel.
6. the sealing structure of horizontal main axis as claimed in claim 5, it is characterised in that: the quantity in the sealing gland hole is set as more
It is a, and multiple sealing gland holes are around the circumferential directions of sealing gland block.
7. the sealing structure of horizontal main axis as claimed in claim 6, it is characterised in that: the central axes of the air inlet and sealing gland
The central axes in hole are at least staggered 15 °.
8. the sealing structure of horizontal main axis as claimed in claim 5, it is characterised in that: the end cap is equipped with plug, described
Plug is fixed on one end of air inlet, and the plug and end cap are interference fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821630396.8U CN209229024U (en) | 2018-10-08 | 2018-10-08 | A kind of sealing structure of horizontal main axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821630396.8U CN209229024U (en) | 2018-10-08 | 2018-10-08 | A kind of sealing structure of horizontal main axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209229024U true CN209229024U (en) | 2019-08-09 |
Family
ID=67499688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821630396.8U Active CN209229024U (en) | 2018-10-08 | 2018-10-08 | A kind of sealing structure of horizontal main axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209229024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716245A (en) * | 2020-06-03 | 2020-09-29 | 广州市昊志机电股份有限公司 | Main shaft structure |
| CN115555595A (en) * | 2022-12-06 | 2023-01-03 | 冈田精机(常州)有限公司 | Main shaft with multistage formula air curtain |
-
2018
- 2018-10-08 CN CN201821630396.8U patent/CN209229024U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716245A (en) * | 2020-06-03 | 2020-09-29 | 广州市昊志机电股份有限公司 | Main shaft structure |
| CN115555595A (en) * | 2022-12-06 | 2023-01-03 | 冈田精机(常州)有限公司 | Main shaft with multistage formula air curtain |
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