CN209743370U - rotary vacuum shaft set - Google Patents
rotary vacuum shaft set Download PDFInfo
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- CN209743370U CN209743370U CN201920105717.0U CN201920105717U CN209743370U CN 209743370 U CN209743370 U CN 209743370U CN 201920105717 U CN201920105717 U CN 201920105717U CN 209743370 U CN209743370 U CN 209743370U
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Abstract
The utility model discloses a rotatory vacuum shaft group, vacuum shaft group includes: the rotating shaft is of a cylindrical shell structure, a through hole is formed in the side wall of the rotating shaft and communicated with an inner cavity of the rotating shaft, and the bottom of the rotating shaft is connected with a motor rotor shaft, so that the rotating shaft can rotate around a self shaft; the middle layer is sleeved on the rotating shaft, the gap distance between the middle layer and the rotating shaft is a preset value, bearings are fixed at two ends of the middle layer, inner rings of the bearings are tightly matched with the rotating shaft, a concave annular cavity is formed in the inner side wall of the middle layer, the annular cavity is communicated with the through hole, a first through hole is formed in the middle layer, one end of the first through hole is communicated with the outer space of the middle layer, and the other end of the first through hole is communicated with the annular cavity. The beneficial effects of the utility model are that make the pivot have the function of evacuation simultaneously.
Description
Technical Field
The utility model belongs to the field of machinery, concretely relates to rotatory vacuum shaft group.
Background
in industrial production, in the field of machine manufacturing, various machining fields often require rotation of a workpiece, and the rotation is usually realized through a rotating shaft. However, while rotating the workpiece, the workpiece needs to be fixed on the rotating shaft, and the fixing mode includes a vacuum pumping mode. The vacuumizing mode necessarily needs a set of vacuumizing related devices, and the problem to be solved is how to vacuumize the related devices without interfering with the rotating shaft.
Disclosure of Invention
To the problem that exists among the prior art, the utility model provides a rotatory vacuum shaft group, the utility model discloses can combine on one device with evacuation and rotation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a rotating vacuum shaft assembly, the vacuum shaft assembly comprising:
The rotating shaft is of a cylindrical shell structure, a through hole is formed in the side wall of the rotating shaft and communicated with an inner cavity of the rotating shaft, and the bottom of the rotating shaft is connected with a motor rotor shaft, so that the rotating shaft can rotate around a self shaft;
The middle layer is sleeved on the rotating shaft, the gap distance between the middle layer and the rotating shaft is a preset value, bearings are fixed at two ends of the middle layer, inner rings of the bearings are tightly matched with the rotating shaft, a concave annular cavity is arranged on the inner side wall of the middle layer, the annular cavity is communicated with the through hole, a first through hole is formed in the middle layer, one end of the first through hole is communicated with the outer space of the middle layer, and the other end of the first through hole is communicated with the annular cavity; and
The shell is sleeved on the middle layer, an air suction hole is formed in the shell, one end of the air suction hole is communicated with the first through hole, and the other end of the air suction hole is connected with an external air suction device.
And a sealing device is clamped between the middle layer and the shell, and the sealing device enables the communication position of the first through hole and the air suction hole to be isolated from the external space.
The outer wall of the middle layer is provided with two parallel annular grooves, the first through hole is clamped between the two annular grooves, and the sealing strip is accommodated in the annular groove.
The shell is uniformly provided with a plurality of screw holes for fixing the vacuum shaft group on external equipment.
The both ends of shell are provided with the fixed disk, be provided with the confession on the fixed disk the second through-hole that the pivot passed, the fixed disk with threaded connection between the shell.
The predetermined value is less than 0.02 mm.
the predetermined value is 0.005 mm.
The bearing is a single-row deep groove ball bearing, and the single-row deep groove ball bearing comprises a sealing ring.
and hardening the surface of the rotating shaft.
Compared with the prior art, the beneficial effects of the utility model are that:
1. The rotating shaft is provided with the hole, and the middle layer, the shell and the air extractor outside are matched to realize the vacuum pumping in the rotating shaft, so that the functional combination of vacuum adsorption and rotation is realized;
2. the sealing performance of the bearing is enhanced through the sealing ring, the gap between the middle layer and the outer wall of the rotating shaft is very small, and the influence of the gap on the pressure of air exhaust can be ignored;
3. The rotating shaft is made of stainless steel materials, and the surface of the rotating shaft is hardened to prevent the locking caused by the extremely small clearance due to the softer surface of the rotating shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.
fig. 1 is a schematic sectional view of the present invention.
Fig. 2 is a schematic sectional view of the present invention.
fig. 3 is a schematic view of the overall structure of the present invention.
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 any creative effort belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-3, the present embodiment provides a rotary vacuum shaft assembly comprising:
The motor rotor shaft comprises a rotating shaft 1, wherein the rotating shaft 1 is of a cylindrical shell structure, a through hole 11 is formed in the side wall of the rotating shaft 1, the through hole 11 is communicated with an inner cavity of the rotating shaft 1, and the bottom of the rotating shaft 1 is connected with a motor rotor shaft, so that the rotating shaft 1 can rotate around a self-shaft;
The middle layer 2 is sleeved on the rotating shaft 1, the gap distance between the middle layer 2 and the rotating shaft 1 is a preset value, bearings 3 are fixed at two ends of the middle layer 2, an inner ring of each bearing 3 is tightly matched with the rotating shaft 1, a concave annular cavity 21 is arranged on the inner side wall of the middle layer 2, the annular cavity is communicated with the through hole 11, a first through hole 22 is formed in the middle layer 2, one end of the first through hole 22 is communicated with the outer space of the middle layer 2, and the other end of the first through hole 22 is communicated with the annular cavity 21; and
the shell 4 is sleeved on the middle layer 2, an air exhaust hole 41 is formed in the shell 4, one end of the air exhaust hole 41 is communicated with the first through hole 22, and the other end of the air exhaust hole 41 is connected with an external air exhaust device.
Preferably, in this embodiment, a sealing device is interposed between the intermediate layer 2 and the housing 4, and the sealing device isolates a communication position between the first through hole 22 and the suction hole 41 from an external space.
Preferably, in this embodiment, two parallel annular grooves are formed in the outer wall of the intermediate layer 2, the first through hole 22 is sandwiched between the two annular grooves, and the sealing strip 23 is accommodated in the annular grooves.
as a further preference, the housing 4 of the present embodiment is uniformly provided with a plurality of screw holes 42 for fixing the vacuum shaft set to an external device.
As a further preferred option, in this embodiment, fixed disks 5 are disposed at two ends of the housing 4, a second through hole for the rotating shaft 1 to pass through is disposed on the fixed disk 5, and the fixed disk 5 is in threaded connection with the housing 4.
As a further preference, the predetermined value described in this embodiment is less than 0.02 mm.
more preferably, the predetermined value is 0.005mm in this embodiment.
More preferably, in this embodiment, the bearing 3 is a single-row deep groove ball bearing, and the single-row deep groove ball bearing includes a seal ring.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention can be made without departing from the spirit and scope of the present invention, and these modifications and improvements are within the spirit and scope of the present invention.
Claims (9)
1. A rotating vacuum shaft assembly, said vacuum shaft assembly comprising:
The motor rotor shaft comprises a rotating shaft (1), wherein the rotating shaft (1) is of a cylindrical shell structure, a through hole (11) is formed in the side wall of the rotating shaft (1), the through hole (11) is communicated with an inner cavity of the rotating shaft (1), and the bottom of the rotating shaft (1) is connected with a motor rotor shaft, so that the rotating shaft (1) can rotate around a self shaft;
The middle layer (2) is sleeved on the rotating shaft (1), the gap distance between the middle layer (2) and the rotating shaft (1) is a preset value, bearings (3) are fixed at two ends of the middle layer (2), the inner ring of the bearing (3) is tightly matched with the rotating shaft (1), a concave annular cavity (21) is arranged on the inner side wall of the middle layer (2), the annular cavity is communicated with the through hole (11), a first through hole (22) is formed in the middle layer (2), one end of the first through hole (22) is communicated with the outer space of the middle layer (2), and the other end of the first through hole (22) is communicated with the annular cavity (21); and
The shell (4), shell (4) cover is established on intermediate level (2), be provided with aspirating hole (41) on shell (4), the one end of aspirating hole (41) with first through-hole (22) are linked together, the other end and the outside air exhaust device of aspirating hole (41) are connected.
2. The rotary vacuum shaft group according to claim 1, characterized in that a sealing device is interposed between the intermediate layer (2) and the casing (4), which seals the communication between the first through hole (22) and the suction hole (41) from the external space.
3. Set according to claim 2, characterized in that the outer wall of the intermediate layer (2) is provided with two parallel annular grooves, between which the first through hole (22) is interposed, in which a sealing strip (23) is housed.
4. Set of rotating vacuum shafts according to claim 1, characterized in that said housing (4) is uniformly provided with a plurality of screw holes (42) for fixing said set of vacuum shafts to external equipment.
5. the rotary vacuum shaft group according to claim 1, characterized in that the two ends of the housing (4) are provided with fixing discs (5), the fixing discs (5) are provided with second through holes for the rotating shaft (1) to pass through, and the fixing discs (5) are in threaded connection with the housing (4).
6. The rotating vacuum shaft group of claim 1, wherein said predetermined value is less than 0.02 mm.
7. The rotating vacuum shaft group according to claim 6, wherein said predetermined value is 0.005 mm.
8. The rotary vacuum shaft group according to claim 1, characterized in that the bearing (3) is a single-row deep groove ball bearing comprising a sealing ring.
9. Set according to claim 1, characterized in that the surface of the shaft (1) is hardened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920105717.0U CN209743370U (en) | 2019-01-22 | 2019-01-22 | rotary vacuum shaft set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920105717.0U CN209743370U (en) | 2019-01-22 | 2019-01-22 | rotary vacuum shaft set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209743370U true CN209743370U (en) | 2019-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920105717.0U Active CN209743370U (en) | 2019-01-22 | 2019-01-22 | rotary vacuum shaft set |
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| Country | Link |
|---|---|
| CN (1) | CN209743370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707723A (en) * | 2019-01-22 | 2019-05-03 | 上海提牛机电设备有限公司 | A kind of rotatory vacuum axis group |
-
2019
- 2019-01-22 CN CN201920105717.0U patent/CN209743370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707723A (en) * | 2019-01-22 | 2019-05-03 | 上海提牛机电设备有限公司 | A kind of rotatory vacuum axis group |
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Address after: 201405 Room 101, 88 Tong Fu Road, Fengxian District, Shanghai. Patentee after: Shanghai Tiniu Technology Co.,Ltd. Address before: 201405 Room 101, 88 Tong Fu Road, Fengxian District, Shanghai. Patentee before: SHANGHAI STN ELECTROMECHANICAL EQUIPMENT Co.,Ltd. |