CN201221606Y - Lead screw bearing seal device - Google Patents
Lead screw bearing seal device Download PDFInfo
- Publication number
- CN201221606Y CN201221606Y CNU2008200419119U CN200820041911U CN201221606Y CN 201221606 Y CN201221606 Y CN 201221606Y CN U2008200419119 U CNU2008200419119 U CN U2008200419119U CN 200820041911 U CN200820041911 U CN 200820041911U CN 201221606 Y CN201221606 Y CN 201221606Y
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- CN
- China
- Prior art keywords
- bearing
- screw
- rear end
- pressure ring
- screw mandrel
- 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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Abstract
The utility model discloses a sealing gland of a screw bearing, comprising a screw bearing sheathed on a screw rod, wherein, the outer ring of the screw bearing is pressed down into a bearing seat by a bearing cap at the front end; the front end of the inner ring of the screw bearing is fixed by a first locknut through an axle sleeve; the rear end of the inner ring of the screw bearing is fixed by a second locknut through a bearing pressure ring, and the space between the rear end of the bearing pressure ring and the circular bead of the bearing seat is shaped like a labyrinth. The utility model has a reasonable overall structure, and combines various structures, thus effectively preventing the waste oil from the screw rod and the dust in the air from polluting the bearing, thereby improving the service life of the bearing.
Description
Technical field:
The utility model relates to a kind of screw axis bearing sealing device.
Background technique:
Sealing can be divided into contact seal and noncontact seal two big classes according to its principle difference.Noncontact seal is not subjected to speed limit, and contact seal can only be life-span that guarantees Sealing and the wearing and tearing that reduce axle with the lower occasion of on-line velocity, and being coupling the hardness of touching part should be more than HRC40, and surface roughness should be less than Pa1.60～Ra0.80 μ m.
The screw mandrel rotating speed of lathe is more than 2000rpm, if employing contact seal, because the friction that Sealing and leading screw produce, make the leading screw temperature rise, not only shortened the working life of Sealing, What is more is to make bearing produce temperature rise, thereby has reduced its working life and usability, has influenced the transmission accuracy of whole system.Thereby the sealing of leading screw bearing adopts noncontact seal usually, and noncontact seal has various ways such as gap sealing, disc sealing and labyrinth seal.Owing to there is the gap, except that the disc sealing, noncontact seal is used for the grease lubrication occasion more.
Summary of the invention:
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, the screw axis bearing sealing device that sealing reliability is good.
Technical solution of the present utility model is:
A kind of screw axis bearing sealing device, comprise the screw mandrel bearing that is sleeved on the screw mandrel, it is characterized in that: the screw axis bearing outer-ring is pressed in the bearing support by the bearing gland of front end, the front end of screw mandrel bearing inner race is fixed by axle sleeve by first locking nut, the rear end of screw mandrel bearing inner race is fixed by bearing pressure ring by second locking nut, and is the labyrinth structure form between the shoulder of bearing pressure ring rear end and bearing support rear end.
Fixedly connected with anti-collision block in the bearing support rear end.It between bearing pressure ring and the screw mandrel little Spielpassung.Also be provided with little Spielpassung between bearing pressure ring and the bearing support.
The utility model is rational in infrastructure, and the combination utilization by multiple structure has stoped the pollution to bearing of the waste oil that flows out on the screw mandrel and dust in air, the working life of having improved bearing effectively.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is an embodiment's of the utility model a configuration diagram.
Embodiment:
A kind of screw axis bearing sealing device, comprise the screw mandrel bearing 6 that is sleeved on the screw mandrel 1, screw mandrel bearing 6 outer rings are pressed in the bearing support 5 by the bearing gland 7 of front end, the front end of screw mandrel bearing 6 inner rings is fixing by axle sleeve 8 by first locking nut 9, the rear end of screw mandrel bearing inner race is fixing by bearing pressure ring 4 by second locking nut 3, and is the labyrinth structure form between the shoulder of bearing pressure ring 4 rear ends and bearing support rear end.Fixedly connected with anti-collision block 2 in the bearing support rear end.It between bearing pressure ring and the screw mandrel little Spielpassung.Also be provided with little Spielpassung between bearing pressure ring and the bearing support.
Claims (4)
1, a kind of screw axis bearing sealing device, comprise the screw mandrel bearing that is sleeved on the screw mandrel, it is characterized in that: the screw axis bearing outer-ring is pressed in the bearing support by the bearing gland of front end, the front end of screw mandrel bearing inner race is fixed by axle sleeve by first locking nut, the rear end of screw mandrel bearing inner race is fixed by bearing pressure ring by second locking nut, and is the labyrinth structure form between the shoulder of bearing pressure ring rear end and bearing support rear end.
2, screw axis bearing sealing device according to claim 1 is characterized in that: fixedly connected with anti-collision block in the bearing support rear end.
3, screw axis bearing sealing device according to claim 1 is characterized in that: be little Spielpassung between bearing pressure ring and the screw mandrel.
4, screw axis bearing sealing device according to claim 1 is characterized in that: also be provided with little Spielpassung between bearing pressure ring and the bearing support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200419119U CN201221606Y (en) | 2008-07-18 | 2008-07-18 | Lead screw bearing seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200419119U CN201221606Y (en) | 2008-07-18 | 2008-07-18 | Lead screw bearing seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221606Y true CN201221606Y (en) | 2009-04-15 |
Family
ID=40575113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200419119U Expired - Lifetime CN201221606Y (en) | 2008-07-18 | 2008-07-18 | Lead screw bearing seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221606Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602172B (en) * | 2009-04-21 | 2011-01-19 | 上海克迈特精密机床有限公司 | Leading screw support structure and leading screw prestretching method adopting same |
| CN103851202A (en) * | 2014-01-20 | 2014-06-11 | 南通国盛机电集团有限公司 | Oil repellency device for bearing on bottom end of screw |
| CN105032960A (en) * | 2015-07-30 | 2015-11-11 | 南通科技投资集团股份有限公司 | Screw rod stretching device |
| CN110360286A (en) * | 2019-08-26 | 2019-10-22 | 无锡京华重工装备制造有限公司 | A kind of screw rod bearing safeguard structure |
| CN113319634A (en) * | 2021-06-30 | 2021-08-31 | 厦门大金机械有限公司 | Machine tool screw rod prestretching installation mechanism |
-
2008
- 2008-07-18 CN CNU2008200419119U patent/CN201221606Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602172B (en) * | 2009-04-21 | 2011-01-19 | 上海克迈特精密机床有限公司 | Leading screw support structure and leading screw prestretching method adopting same |
| CN103851202A (en) * | 2014-01-20 | 2014-06-11 | 南通国盛机电集团有限公司 | Oil repellency device for bearing on bottom end of screw |
| CN105032960A (en) * | 2015-07-30 | 2015-11-11 | 南通科技投资集团股份有限公司 | Screw rod stretching device |
| CN110360286A (en) * | 2019-08-26 | 2019-10-22 | 无锡京华重工装备制造有限公司 | A kind of screw rod bearing safeguard structure |
| CN113319634A (en) * | 2021-06-30 | 2021-08-31 | 厦门大金机械有限公司 | Machine tool screw rod prestretching installation mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 226000 Yonghe Road 1, Gangzha District, Jiangsu, Nantong Patentee after: AVIC AVIATION HIGH-TECHNOLOGY CO.,LTD. Address before: 226000 No. 23, Hong Kong Road, Nantong, Jiangsu Patentee before: TONTEC TECHNOLOGY INVESTMENT GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170614 Address after: 226000 Yonghe Road 1, Gangzha District, Jiangsu, Nantong Co-patentee after: NANTONG HANGZHI EQUIPMENT TECHNOLOGY CO.,LTD. Patentee after: AVIC AVIATION HIGH-TECHNOLOGY CO.,LTD. Address before: 226000 Yonghe Road 1, Gangzha District, Jiangsu, Nantong Patentee before: AVIC AVIATION HIGH-TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090415 |
|
| CX01 | Expiry of patent term |