CN207548293U - Air tight means for main shaft - Google Patents
Air tight means for main shaft Download PDFInfo
- Publication number
- CN207548293U CN207548293U CN201721429369.XU CN201721429369U CN207548293U CN 207548293 U CN207548293 U CN 207548293U CN 201721429369 U CN201721429369 U CN 201721429369U CN 207548293 U CN207548293 U CN 207548293U
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- China
- Prior art keywords
- spindle
- main shaft
- air
- gland
- sealing ring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 210000004907 gland Anatomy 0.000 claims abstract description 38
- 230000000694 effects Effects 0.000 abstract description 3
- 241000755266 Kathetostoma giganteum Species 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
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- Sealing Devices (AREA)
Abstract
The utility model discloses a kind of air tight means for main shaft, including main shaft end cap, mainshaft gland, sealing ring and sealing ring gland；Wherein, main shaft end cap is sheathed on main shaft mandrel, which is provided with air admission hole；Mainshaft gland is sheathed on main shaft mandrel, and is fixedly connected with main shaft end cap, and the gas channel connected with air admission hole and the storage tank for housing sealing ring are equipped in mainshaft gland；Sealing ring is placed in storage tank；Sealing ring gland is sheathed on main shaft mandrel, and is fixedly connected with sealing ring；The venthole connected there are two being set on sealing ring gland with gas channel；Two ventholes are oppositely arranged.Compared to existing air tight means for main shaft; the negligible amounts of the venthole of the air tight means for main shaft of the utility model; the cross-sectional area of air-flow can be effectively reduced; improve the impact force of gas blown out by venthole; and then effectively improve the hermetic seal effect of air tight means for main shaft; so as to the bearing of effective protection main shaft, increase the service life of main shaft.
Description
Technical Field
The utility model relates to the technical field of mechanical equipment, in particular to main shaft air seal device.
Background
With the increasing maturity of the air sealing technology, the application range of the air sealing technology is wider and wider. At present, the air seal is gradually applied to a centrifugal pump and a stirrer and gradually extends into the field of high-speed spindles of numerical control machines. When a high-speed numerical control machining center is designed, a very important problem is to ensure that the front end of a main shaft is reliably sealed, and the main shaft is sealed in a gas manner so as to prevent metal cutting particle slag in machining from entering a main shaft bearing and other parts in a box, thereby effectively avoiding the problem that the rotation precision of the main shaft is reduced and the machining performance of a machine tool is influenced because the metal cutting particle slag enters the main shaft bearing.
The existing spindle air sealing device is provided with six air outlets through an air inlet pipe, so that the cross-sectional area of airflow in the whole air sealing environment is increased, under the condition that the air supply pressure of a machine tool is not changed, the air impulse force and the air flow speed of the whole air sealing environment are not large enough, the machine tool can generate a lot of fragments in the high-speed machining process, the fragments can obtain great kinetic energy, and a small amount of fragments can enter the inside of a spindle under the condition that the air impulse force is not enough, so that the bearing of the spindle is damaged, and the service life of the spindle is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a main shaft air seal device aims at realizing the effective air seal of main shaft.
In order to achieve the above object, the utility model provides a spindle air sealing device, which comprises a spindle end cover, a spindle gland, a sealing ring and a sealing ring gland; wherein,
the spindle end cover is sleeved on the spindle mandrel, and an air inlet is formed in the spindle end cover;
the spindle gland is sleeved on the spindle mandrel and fixedly connected with the spindle end cover, and an airflow channel communicated with the air inlet hole and a containing groove for containing the sealing ring are arranged in the spindle gland;
the sealing ring is accommodated in the accommodating groove;
the sealing ring gland is sleeved on the spindle mandrel and is fixedly connected with the sealing ring; two air outlet holes communicated with the air flow channel are formed in the sealing ring gland; the two air outlet holes are oppositely arranged.
Optionally, the air inlet hole comprises a first air inlet unit and a second air inlet unit which are communicated with each other; the first air inlet unit is arranged along the radial direction of the spindle end cover, and one end of the first air inlet unit is positioned on the side wall of the spindle end cover; the second air inlet unit is arranged along the axial direction of the spindle end cover, and one end of the second air inlet unit is located on the end face of the spindle end cover.
Optionally, the main shaft gland is annular, and the accommodating groove is formed in the inner ring position of the main shaft gland.
Optionally, the end face of the end of the main shaft gland facing the end cover of the main shaft extends obliquely to the groove wall of the accommodating groove.
Optionally, the main shaft end cover and the main shaft gland are connected in a locking manner through screws.
Optionally, the screw for lockingly connecting the spindle end cover and the spindle gland is an inner hexagonal socket head cap screw.
Optionally, the number of the socket head cap screws is eight.
Optionally, the seal ring gland is connected with the seal ring in a locking manner through a bolt.
Optionally, the bolt for lockingly connecting the seal ring gland and the seal ring is an inner hexagonal flat head bolt.
Optionally, the number of the hexagon socket head cap bolts is six.
Compare current main shaft air seal device, the utility model discloses a main shaft air seal device's venthole's quantity is less, can effectively reduce the cross-sectional area of air current, improves the impact force of the gas that is blown off by the venthole, and then has effectively promoted main shaft air seal device's airtight effect to effectively protect the bearing of main shaft, increase the life of main shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a three-dimensional exploded structural view of an embodiment of the spindle air-sealing device of the present invention;
FIG. 2 is a schematic plan view illustrating an assembled structure of the spindle air sealing apparatus shown in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the spindle air sealing apparatus shown in FIG. 2;
FIG. 4 is a schematic perspective view of the main shaft end cap of FIG. 1;
fig. 5 is a schematic perspective view of the spindle cover of fig. 1.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a main shaft air seal device.
Referring to fig. 1 to 3, fig. 1 is a three-dimensional exploded structural view of an embodiment of a spindle air-sealing device of the present invention; FIG. 2 is a schematic plan view illustrating an assembled structure of the spindle air sealing apparatus shown in FIG. 1; fig. 3 is a schematic sectional view of the spindle air sealing device shown in fig. 2 (the direction of arrows in the figure indicates the direction of air flow).
In this embodiment, the spindle air sealing device includes a spindle end cap 100, a spindle gland 200, a seal ring 300, and a seal ring gland 400. Wherein,
the spindle end cover 100 is sleeved on the spindle mandrel 500, and an air inlet 120 is arranged in the spindle end cover; the spindle cover 200 is sleeved on the spindle mandrel 500 and fixedly connected with the spindle end cover 100, and an airflow channel 220 communicated with the air inlet 120 and a containing groove 240 for containing the sealing ring 300 are arranged in the spindle cover 200; the sealing ring 300 is accommodated in the accommodating groove 240; the seal ring gland 400 is sleeved on the spindle mandrel 500 and is fixedly connected with the seal ring 300; two air outlet holes 420 communicated with the air flow channel 220 are formed in the sealing ring gland 400; the two air outlet holes 420 are oppositely arranged.
Specifically, the air inlet 120 is used to connect an external air storage device (e.g., an air storage tank). The compressed gas provided by the gas storage device enters the spindle end cover 100 through the gas inlet 120, and enters the two gas outlet holes 420 through the gas flow channel 220 and the gap between the sealing ring 300 and the groove wall of the accommodating groove 240, and is finally blown out through the two gas outlet holes 420.
Compare current main shaft air seal device, the main shaft air seal device's of this embodiment venthole 420 quantity is less, can effectively reduce the cross-sectional area of air current, improves the impact force of the gas that is blown out by venthole 420, and then has effectively promoted main shaft air seal device's airtight effect to effectively protect the bearing of main shaft, increase the life of main shaft.
Further, as shown in fig. 4 and referring to fig. 3, fig. 4 is a schematic perspective view of the main shaft end cover in fig. 1.
In this embodiment, the main shaft end cover 100 has a square-like structure with a circular arc edge. It has a top wall 102, a bottom wall (not shown), three planar side walls 104, and a circular arc-shaped side wall 106. The top surface 102 is provided with a plurality of threaded holes 140. The air intake hole 120 includes a first air intake unit 122 and a second air intake unit 124 communicated with each other; the first air inlet unit 122 is arranged along the radial direction of the arc-shaped side wall 106 of the spindle end cover 100, and one end of the first air inlet unit is located on the arc-shaped side wall 106 of the spindle end cover 100; the second air inlet unit 124 is axially disposed along the circular arc-shaped side wall 106 of the spindle end cover 100, and one end of the second air inlet unit is located on the top wall 102 of the spindle end cover 100.
Further, as shown in fig. 5 and referring to fig. 3, fig. 5 is a schematic perspective view of the spindle cover in fig. 1.
In this embodiment, the spindle cover 200 is annular, and the accommodating groove 240 is disposed at an inner ring position of the spindle cover 200. The airflow channel 220 extends from the end surface of the spindle cover 200 facing the end of the spindle cover 100 to the groove wall of the accommodating groove 240 in an inclined manner.
Further, as shown in fig. 1, in the present embodiment, the spindle cover 100 and the spindle cover 200 are locked and connected by a screw 600. Specifically, the screw 600 for lockingly connecting the spindle end cover 100 and the spindle gland 200 is an inner hexagonal socket head cap screw with the specification of M5; and the number of the inner hexagonal socket head cap screws is eight.
Further, as shown in fig. 1, in the present embodiment, the sealing ring gland 400 is lockingly connected to the sealing ring 300 by bolts 700. Specifically, the bolt 700 for lockingly connecting the seal ring gland 400 and the seal ring 300 is an inner hexagon flat head bolt with the specification of M4; and the number of the inner hexagonal flat-head bolts is six.
The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.
Claims (10)
1. A main shaft air sealing device is characterized by comprising a main shaft end cover, a main shaft gland, a sealing ring and a sealing ring gland; wherein,
the spindle end cover is sleeved on the spindle mandrel, and an air inlet is formed in the spindle end cover;
the spindle gland is sleeved on the spindle mandrel and fixedly connected with the spindle end cover, and an airflow channel communicated with the air inlet hole and a containing groove for containing the sealing ring are arranged in the spindle gland;
the sealing ring is accommodated in the accommodating groove;
the sealing ring gland is sleeved on the spindle mandrel and is fixedly connected with the sealing ring; two air outlet holes communicated with the air flow channel are formed in the sealing ring gland; the two air outlet holes are oppositely arranged.
2. The spindle air sealing apparatus according to claim 1, wherein the air intake hole includes a first air intake unit and a second air intake unit which communicate with each other; the first air inlet unit is arranged along the radial direction of the spindle end cover, and one end of the first air inlet unit is positioned on the side wall of the spindle end cover; the second air inlet unit is arranged along the axial direction of the spindle end cover, and one end of the second air inlet unit is located on the end face of the spindle end cover.
3. The air sealing device for the main shaft according to claim 1, wherein the main shaft gland is annular, and the receiving groove is provided at an inner ring position of the main shaft gland.
4. The air seal device for a spindle according to claim 3, wherein the air flow passage extends obliquely from an end surface of the spindle cover facing the end of the spindle cover to a groove wall of the accommodating groove.
5. The spindle air seal assembly of claim 1, wherein the spindle end cap is lockingly connected to the spindle gland by a screw.
6. The spindle air seal assembly according to claim 5, wherein the screw for lockingly connecting the spindle end cap and the spindle gland is an inner hexagonal socket head screw.
7. The air sealing device for a main shaft according to claim 6, wherein the number of the socket head cap screws is eight.
8. The spindle air seal assembly of claim 1, wherein the seal gland is bolted to the seal.
9. The air seal device for a spindle of claim 8, wherein the bolt for lockingly connecting the seal gland to the seal is a hexagon socket head bolt.
10. The air sealing device for a main shaft according to claim 9, wherein the number of the hexagon socket head cap bolts is six.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429369.XU CN207548293U (en) | 2017-11-01 | 2017-11-01 | Air tight means for main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721429369.XU CN207548293U (en) | 2017-11-01 | 2017-11-01 | Air tight means for main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207548293U true CN207548293U (en) | 2018-06-29 |
Family
ID=62681637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721429369.XU Active CN207548293U (en) | 2017-11-01 | 2017-11-01 | Air tight means for main shaft |
Country Status (1)
| Country | Link |
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| CN (1) | CN207548293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163100A (en) * | 2018-11-06 | 2019-01-08 | 深圳市创世纪机械有限公司 | The air-tight structure of main shaft |
-
2017
- 2017-11-01 CN CN201721429369.XU patent/CN207548293U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163100A (en) * | 2018-11-06 | 2019-01-08 | 深圳市创世纪机械有限公司 | The air-tight structure of main shaft |
| CN109163100B (en) * | 2018-11-06 | 2024-06-11 | 深圳市创世纪机械有限公司 | Air-tight seal structure of main shaft |
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