CN203526580U - Guide sleeve sealing device for shaft moving type computer numerical control machine tool - Google Patents
Guide sleeve sealing device for shaft moving type computer numerical control machine tool Download PDFInfo
- Publication number
- CN203526580U CN203526580U CN201320649430.7U CN201320649430U CN203526580U CN 203526580 U CN203526580 U CN 203526580U CN 201320649430 U CN201320649430 U CN 201320649430U CN 203526580 U CN203526580 U CN 203526580U
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- China
- Prior art keywords
- guide sleeve
- guide pin
- pin bushing
- bearing
- sealing device
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Abstract
A guide sleeve sealing device for a shaft moving type computer numerical control machine tool comprises a guide sleeve shaft and a bearing sleeve connected outside the guide sleeve shaft in a sleeved mode, a high-speed angular contact bearing is arranged between the guide sleeve shaft and the bearing sleeve, a front end cover and a rear end cover are arranged on the front end and rear end of the bearing sleeve respectively. The guide sleeve sealing device is characterized in that two sealing covers are arranged between the guide sleeve shaft and the front end cover, and between the guide sleeve shaft and the rear end cover respectively, and a non-contact sealing is arranged between the guide sleeve shaft and the bearing sleeve. The guide sleeve sealing device for the shaft moving type computer numerical control machine tool does not use a rubber seal so that the abrasion caused by a burned rubber material and abrasive dust of copper and iron entering into a bearing mill train can be avoided, the abrasion is reduced, the service life of a shaft part is assured, the main heat source of rising temperature is decreased, and the noise is reduced.
Description
Technical field
The utility model relates to a kind of sealing device, is specifically related to a kind of shaft type numerically controlled lathe guide pin bushing sealing device of walking.
Background technology
Walk shaft type numerically controlled lathe and be mainly used for the elongated workpiece of processing length, its basic principle is: a set of guide pin bushing assembly is installed on vertical portal frame, and main shaft claming material is done the steady movement of certain limit, cutting workpiece again by the positioned edge Z axis of guide pin bushing.Because being high-speed precision bearing location, rotary components frictional resistance is little, can be with part High Rotation Speed.Can well play guiding, righting workpiece prevents the effect of vibrations.
But in working angles, a large amount of cutting fluids is washed away facing to the position of cutting, powerful pressure is easy to the cutting fluid with waste residue to rush in guide pin bushing inside from guide pin bushing front end face, thereby destruction bearing, guide pin bushing is damaged and lost efficacy, the dimensional accuracy to part, morpheme error, fineness impact is huge, so the sealing of guide pin bushing assembly is just most important.
Colleague uses labyrinth to add sealing ring at present, and a kind of is " 0 " type circle, " star " type circle that uses radial seal; A kind of is axial seal " V " type circle and backbone sealing ring.Because so long as use sealing ring, just all there is a same problem, contacted pine can cause the sealing effectiveness of guide pin bushing bad, on the contrary contact tension, and frictional heating is serious.Particularly, in the situation that running up, heating is obviously abnormal, and again because the scale error of rubber seal is larger, seal is difficult to control well with the elasticity that coordinates of steel part in batch production.Time is slightly long, may on axle sleeve, grind one zanjon.And the abrasive dust of the rubber burning out end material, copper iron will enter bearing track, mutual frictional force between each part also strengthens, cause axial region temperature sharply to raise, noise strengthens, accelerate the wearing and tearing of bearing and the inefficacy of guide pin bushing assembly, have a strong impact on the useful life of axial region parts, and the service life of lathe.
Summary of the invention
The purpose of this utility model is to overcome the existing defect of existing apparatus, and a kind of good sealing effect, the reliable and stable shaft type numerically controlled lathe guide pin bushing sealing device of walking are provided.
For realizing above object, technical solution of the present utility model is: a kind of shaft type numerically controlled lathe guide pin bushing sealing device of walking, comprise guide pin bushing axle and be socketed in its outside bearing holder (housing, cover), between described guide pin bushing axle and bearing holder (housing, cover), be provided with High speed Angular Contact Ceramic bearing, the rear and front end of described bearing holder (housing, cover) is separately installed with drive end bearing bracket and rear end cap, it is characterized in that: between described guide pin bushing axle and drive end bearing bracket, rear end cap, be provided with seal cover, between described guide pin bushing axle and bearing holder (housing, cover), be provided with noncontact sealing.
Described seal cover is labyrinth sealing lid, and monolateral gap is 0.1～0.15mm.
Monolateral gap between described guide pin bushing axle and bearing holder (housing, cover) is 0.025～0.045mm.
On described drive end bearing bracket, be provided with mudhole.
Compared with prior art, the utlity model has following benefit:
1, the utility model is not used rubber seal, avoids the abrasive dust that burns out rubber end material, copper iron to enter the friction of bearing mill train, reduces friction, guarantees the service life of axial region part, reduces the main origin of heat of temperature rise, reduces noise.
2, the utility model has guaranteed quality of fit, and can reach good sealing effectiveness, has improved the precision of axial region, has improved workpiece crudy and part qualification rate, extends the service life of lathe, has greatly improved economic benefit.
3, the greasy dirt that the utility model is in use rushed in can be thrown to outer wall under centrifugal action, from mudhole below, flows out, and guarantees that equipment can be in best duty.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: guide pin bushing axle 1, drive end bearing bracket 2, bearing holder (housing, cover) 3, High speed Angular Contact Ceramic bearing 4, rear end cap 5, seal cover 6, mudhole 7.
The specific embodiment
Below in conjunction with accompanying drawing explanation and the specific embodiment, the utility model is described in further detail:
Referring to Fig. 1, a kind of shaft type numerically controlled lathe guide pin bushing sealing device of walking, comprise guide pin bushing axle 1 and be socketed in its outside bearing holder (housing, cover) 3, between described guide pin bushing axle 1 and bearing holder (housing, cover) 3, be provided with High speed Angular Contact Ceramic bearing 4, the rear and front end of described bearing holder (housing, cover) 3 is separately installed with drive end bearing bracket 2 and rear end cap 5, on described drive end bearing bracket 2, be provided with mudhole 7, described guide pin bushing axle 1 and drive end bearing bracket 2, between rear end cap 5, be provided with labyrinth sealing lid, its monolateral gap is 0.1～0.15mm, between described guide pin bushing axle 1 and bearing holder (housing, cover) 3, be provided with noncontact sealing, and the monolateral gap between guide pin bushing axle 1 and bearing holder (housing, cover) 3 is 0.025～0.045mm.
Sealing setting of the present utility model is divided into two-layer: ground floor is the labyrinth seal forming between guide pin bushing axle 1 and drive end bearing bracket 2, the second layer is the noncontact sealing forming between guide pin bushing axle 1 and bearing holder (housing, cover) 3, in process, the oil of rushing in guide pin bushing front end can be introduced into ground floor labyrinth seal, then most of cutting fluid can be thrown to outer wall under centrifugal action, from mudhole 7 below, flow out, because bearing transportation turns the heating of middle federation, bearing cavity temperature is high, pressure is large, outside under the washing away of cooling fluid in chamber, the lower labyrinth of temperature pressure also just little, and the cutting fluid of being leaked by labyrinth seal, surge weakens layer by layer, with regard to entering the second that pressure is large, do not sealed, thereby guarantee that cutting fluid cannot enter guide pin bushing inside, destroy bearing, affect the machining accuracy of part.
Claims (4)
1. walk shaft type numerically controlled lathe guide pin bushing sealing device for one kind, comprise guide pin bushing axle (1) and be socketed in its outside bearing holder (housing, cover) (3), between described guide pin bushing axle (1) and bearing holder (housing, cover) (3), be provided with High speed Angular Contact Ceramic bearing (4), the rear and front end of described bearing holder (housing, cover) (3) is separately installed with drive end bearing bracket (2) and rear end cap (5), it is characterized in that: between described guide pin bushing axle (1) and drive end bearing bracket (2), rear end cap (5), be provided with seal cover (6), between described guide pin bushing axle (1) and bearing holder (housing, cover) (3), be provided with noncontact sealing.
2. a kind of shaft type numerically controlled lathe guide pin bushing sealing device of walking according to claim 1, is characterized in that: described seal cover (6) is labyrinth sealing lid, and monolateral gap is 0.1～0.15mm.
3. a kind of shaft type numerically controlled lathe guide pin bushing sealing device of walking according to claim 1, is characterized in that: the monolateral gap between described guide pin bushing axle (1) and bearing holder (housing, cover) (3) is 0.025～0.045mm.
4. a kind of shaft type numerically controlled lathe guide pin bushing sealing device of walking according to claim 1, is characterized in that: on described drive end bearing bracket (2), be provided with mudhole (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649430.7U CN203526580U (en) | 2013-10-22 | 2013-10-22 | Guide sleeve sealing device for shaft moving type computer numerical control machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649430.7U CN203526580U (en) | 2013-10-22 | 2013-10-22 | Guide sleeve sealing device for shaft moving type computer numerical control machine tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203526580U true CN203526580U (en) | 2014-04-09 |
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ID=50412842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320649430.7U Expired - Lifetime CN203526580U (en) | 2013-10-22 | 2013-10-22 | Guide sleeve sealing device for shaft moving type computer numerical control machine tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203526580U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551606A (en) * | 2013-10-22 | 2014-02-05 | 湖北毅兴机床有限公司 | Guide sleeve sealing device for shaft travelling numerical control lathe |
| CN113007214A (en) * | 2021-03-09 | 2021-06-22 | 上海人本精密机械有限公司 | Combined high-speed precision bearing |
-
2013
- 2013-10-22 CN CN201320649430.7U patent/CN203526580U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551606A (en) * | 2013-10-22 | 2014-02-05 | 湖北毅兴机床有限公司 | Guide sleeve sealing device for shaft travelling numerical control lathe |
| CN113007214A (en) * | 2021-03-09 | 2021-06-22 | 上海人本精密机械有限公司 | Combined high-speed precision bearing |
| CN113007214B (en) * | 2021-03-09 | 2022-04-01 | 上海人本精密机械有限公司 | Combined high-speed precision bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 432700 Guangshui City, Suizhou province should be located in the industrial park, ten mile road, No., No. 8, -3 Patentee after: Hubei Yixing intelligent equipment Limited by Share Ltd Address before: 432700 Guangshui City, Suizhou province should be located in the industrial park, ten mile road, No., No. 8, -3 Patentee before: HUBEI YIXING MACHINE TOOL CO., LTD. |