CN203206032U - Sealing structure of motor main shaft - Google Patents
Sealing structure of motor main shaft Download PDFInfo
- Publication number
- CN203206032U CN203206032U CN 201320229358 CN201320229358U CN203206032U CN 203206032 U CN203206032 U CN 203206032U CN 201320229358 CN201320229358 CN 201320229358 CN 201320229358 U CN201320229358 U CN 201320229358U CN 203206032 U CN203206032 U CN 203206032U
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- CN
- China
- Prior art keywords
- main shaft
- motor
- electric machine
- machine main
- motor main
- Prior art date
- 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.)
- Expired - Lifetime
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a sealing structure of a motor main shaft. The sealing structure of the motor main shaft includes a shell. The shell is inside provided with the motor shaft. The front part of the motor shaft is sleeved with a shell cover capable of connecting with the shell in a sealed manner. The shell cover is provided with a through hole making convenience for the shell cover to install on the motor main shaft in a sleeving manner. The outer periphery of a shaft body of the motor main shaft disposed in the through hole is provided with threads. The turning direction of the threads is opposite to the rotating direction of the motor main shaft. When the motor main shaft is rotating during a working process, the threads in the opposite direction can discharge cutting fluid and cutting bits invading into gaps between the motor main shaft and the shell cover, so that the cutting fluid and the cutting bits are prevented from invading to a front bearing of a motor and the front bearing is protected against damages, so that the service lifetime of the motor is prolonged.
Description
Technical field
The utility model relates to the hermetically-sealed construction of a kind of hermetically-sealed construction, particularly a kind of electric machine main shaft.
Background technology
At present, domestic most machining tools all are to adopt motor as the power output source, lathe is when machining workpieces, generally all can use cutting fluid, cutting fluid not only can be cooled off workpiece, improve cutting effect, can also reduce the wearing and tearing of cutter, but the cutting swarf that produces when cutting fluid and cutting workpiece invades the fore bearing of motor sometimes from the gap location between electric machine main shaft and the cap, make its damage, both shorten the normal service life of motor, so that lathe needs often maintenance or changes motor, affected people's normal production again.
The utility model content
In order to address the above problem, it is a kind of simple in structure that the purpose of this utility model is to provide, and good seal performance can prolong the motor hermetically-sealed construction in useful life.
The utility model for the technical scheme that solves its technical problem and adopt is:
A kind of hermetically-sealed construction of electric machine main shaft, comprise housing, described enclosure interior is provided with electric machine main shaft, the front portion of this electric machine main shaft be socketed with one with the cap that can housing seal be connected, offer one on the described cap and be convenient to its socket and be installed in through hole on the electric machine main shaft, described electric machine main shaft places the screw thread that offers rotation direction and its direction of rotation on the axis body outer rim of described through hole.
As improvement of the technical scheme, described cap radially offers one or air admission hole above, that be connected with described through hole along it, inject the compressed air of low pressure in the described through hole by above-mentioned air admission hole, the compressed air of low pressure can blow out cutting fluid and cutting swarf toward outside motor, guarantee that they can not intrude into the fore bearing place of motor, the operational environment of having guaranteed fore bearing is not destroyed, and makes be guaranteed the useful life of bearing, thereby further prolongs the useful life of motor.
As further improvement in the technical proposal, described air admission hole is positioned at a side of medium position or the close housing of described screw thread, above-mentioned air admission hole is arranged on a side of medium position or the close housing of described screw thread, can be so that the compressed air of low pressure blows out outside motor with cutting fluid, cutting swarf better.
Further, the aperture of described air admission hole is 3-8mm, and the aperture of above-mentioned air admission hole is offered and is 3-8mm, can either guarantee to inject enough low-pressure compressed airs in the motor, again can be so that air admission hole to be easy to process, the wall thickness of while cap does not need too thick, has saved material.
The beneficial effects of the utility model are: because the utility model offers the screw thread of thread rotary orientation and its direction of rotation in appearance by the axis body that is socketed in cap inside at electric machine main shaft, when electric machine main shaft work is rotated, the screw thread that thread rotary orientation is opposite can be with past discharge of cutting fluid, cutting swarf of invading from the gap location between machine shaft and the cap, prevent that cutting fluid, cutting swarf from invading the fore bearing place of motor, guarantee that fore bearing is not damaged, thereby prolonged the useful life of motor; In addition cap along its radially offer one or more than, the air admission hole that is connected with described through hole, inject the compressed air of low pressure in the through hole by this air admission hole, the compressed air of low pressure also can play cutting fluid, the effect that cutting swarf blows out toward outside motor, by the screw thread use that matches with the compressed air of low pressure, guarantee cutting fluid, cutting swarf can not invade the fore bearing place of motor, prevent that effectively fore bearing is damaged, thereby prolonged widely the useful life of motor, after adopting hermetically-sealed construction of the present utility model, became about 2800 hour by original about 1800 hours the average life of motor.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of cap in the utility model.
Embodiment
With reference to Fig. 1; Fig. 2; a kind of hermetically-sealed construction of electric machine main shaft; comprise housing 1; described housing 1 inside is provided with electric machine main shaft 2; the front portion of this electric machine main shaft 2 be socketed with one with the cap 3 that can housing 1 be tightly connected; offering one on the described cap 3 is convenient to its socket and is installed in through hole 30 on the electric machine main shaft 2; described electric machine main shaft 2 places the screw thread 20 that offers rotation direction and its direction of rotation on the axis body outer rim of described through hole 30; here; the length of the thickness of cap 3 and electric machine main shaft 2 is wanted corresponding increase; by lengthening electric machine main shaft 2; conveniently process needed screw thread 20 thereon; thickening cap 3 can be protected electric machine main shaft 2 and screw thread 20 disposed thereon better; above-mentioned screw thread 20 can be when electric machine main shaft 2 work be rotated; will be from the cutting fluid of the intrusion of the gap location between electric machine main shaft 2 and the cap 3; cutting swarf is discharged outward, prevents cutting fluid; cutting swarf enters motor internal and damages fore bearing.
Further, described cap 3 along its radially offer one or above, with described through hole 30 is connected, the aperture is 3-8mm air admission hole 31, described air admission hole 31 is positioned at a side of medium position or the close housing 1 of described screw thread 2, as preferred embodiment, here preferentially at cap 3 air admission hole 31 that to process an aperture be 5mm, this air admission hole 31 is positioned at described screw thread 20 near a side of housing 1, and above-mentioned air admission hole 31 can also be set to two, three, four or the different air admission hole in a plurality of aperture certainly.
The above only is preferential execution mode of the present utility model, as long as realize that with basic identical means the technical scheme of the utility model purpose all belongs within the protection range of the present utility model.
Claims (4)
1. the hermetically-sealed construction of an electric machine main shaft, comprise housing (1), described housing (1) inside is provided with electric machine main shaft (2), the front portion of this electric machine main shaft (2) be socketed with one with the cap (3) that can housing (1) be tightly connected, offer one on the described cap (3) and be convenient to its socket and be installed in through hole (30) on the electric machine main shaft (2), it is characterized in that: described electric machine main shaft (2) places the screw thread (20) that offers rotation direction and its direction of rotation on the axis body outer rim of described through hole (30).
2. the hermetically-sealed construction of a kind of electric machine main shaft according to claim 1, it is characterized in that: described cap (3) radially offers one or air admission hole (31) above, that be connected with described through hole (30) along it.
3. the hermetically-sealed construction of a kind of electric machine main shaft according to claim 2 is characterized in that: described air admission hole (31) is positioned at the medium position of described screw thread (20) or near a side of housing (1).
4. the hermetically-sealed construction of a kind of electric machine main shaft according to claim 3, it is characterized in that: the aperture of described air admission hole (31) is 3-8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229358 CN203206032U (en) | 2013-04-28 | 2013-04-28 | Sealing structure of motor main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320229358 CN203206032U (en) | 2013-04-28 | 2013-04-28 | Sealing structure of motor main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203206032U true CN203206032U (en) | 2013-09-18 |
Family
ID=49150093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320229358 Expired - Lifetime CN203206032U (en) | 2013-04-28 | 2013-04-28 | Sealing structure of motor main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203206032U (en) |
-
2013
- 2013-04-28 CN CN 201320229358 patent/CN203206032U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171219 Address after: No. 133, No. 116, Li Chang street, ritual and music street, Jianghai District, Jiangmen, Guangdong Patentee after: Liu Ziliang Address before: No. 133, No. 116, Li Chang street, ritual and music street, Jianghai District, Jiangmen, Guangdong Patentee before: KAILI NUMERICAL CONTROL EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |
|
| CX01 | Expiry of patent term |