CN203604643U - Sealing structure of electric spindle - Google Patents
Sealing structure of electric spindle Download PDFInfo
- Publication number
- CN203604643U CN203604643U CN201320740828.1U CN201320740828U CN203604643U CN 203604643 U CN203604643 U CN 203604643U CN 201320740828 U CN201320740828 U CN 201320740828U CN 203604643 U CN203604643 U CN 203604643U
- Authority
- CN
- China
- Prior art keywords
- sealing
- protecting cover
- annular groove
- main shaft
- electric 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
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000004888 barrier function Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract 4
- 239000002245 particle Substances 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Abstract
The utility model discloses a sealing structure of an electric spindle. The sealing structure comprises a machine body, a rotating shaft and a protective cover which is fixedly covers the lower end of the machine body. The rotating shaft comprises a rotating base installed in the machine body and a rotating head protruding forwards from the front end face of the rotating base, the rotating head stretches out of the machine body and the protective cover, an annular flange is arranged on the front end face of the rotating base downwards in a protruding mode, an annular groove is formed in the inner side of the protective cover, when the protective cover is assembled on the machine body, the annular flange is embedded into the annular groove to form a sealing channel, and the sealing channel is used for communicating the external and the inner portion of the electric spindle. According to the sealing structure of the electric spindle, the sealing channel is arranged at the lower end of the electric spindle, so that external tiny particles are difficult to enter the inner portion of a baring; in the process that gas in the bearing is discharged to the external, an airflow barrier for preventing the tiny particles from entering the inner portion of the baring is formed at the position of an outlet of the sealing channel, and therefore an excellent sealing effect is achieved.
Description
Technical field
The utility model relates to bearing seal structure, relates in particular to a kind of sealing configuration of electric main shaft.
Background technique
Electricity main shaft is the new technology that machine tool chief axis and spindle motor are combined together occurring in numerical control machine tool field, and it pushes a New Times to High-speed machining together with techniques of linear motor, high-speed cutter technology.
But, microcosmic, between the rotating shaft running up and bearing, still there is certain interval, in actual course of working, the tiny bits end such as iron filings, aluminium bits under operative workpiece is cut is more common at processing site, these molecules fall into the gap between rotating shaft and bearing together with airborne dust, just can increase spin friction, damage the junction plane between rotating shaft and bearing, accelerate the rate of decay of electric main shaft.
In view of this, be badly in need of a kind of new structural design and solve above-mentioned technical problem.
Model utility content
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sealing configuration of electric main shaft, and it can prevent that extraneous dust, particulate from entering bearing inside, thereby reaches splendid sealability.
For achieving the above object, the utility model adopts following technological scheme:
A kind of sealing configuration of electric main shaft, comprise body, running shaft and be fixedly covered on the protecting cover of body lower end, described running shaft comprises the rotary head portion that is installed in the rotation base portion of internal body and protrudes out forward from this rotation base portion front-end face, this rotary head portion stretches out in outside body and protecting cover, the front-end face of described rotation base portion convexes with annular flange flange downwards, the inner side of described protecting cover is provided with annular groove, this annular flange flange forms sealing channel in embedded rings connected in star in the time that protecting cover is assemblied on body, the inside of the sealing channel connection external world and electric main shaft.
Described annular groove is provided with aperture near the sidewall of running shaft one side, and the head and the tail two ends of this aperture are communicated with respectively extraneous and described sealing channel.
Described protecting cover comprises main lid and ring part, and the inner side of this main lid is radially provided with adjacent first step portion and second step portion, and described ring part is fixed in first step portion, and described annular groove is formed between this ring part and second step portion; Described hole-shaped is formed on ring part.
Described protecting cover is provided with the air storing cavity of communication seals passage, and this air storing cavity is by being located at the transfer port external gas source on protecting cover.
The cross section of described annular flange flange and annular groove is all square, and the sealing channel of the two mutual chimeric formation is " bow " word shape.
As mentioned above, the sealing configuration of a kind of electric main shaft of the utility model arranges sealing channel by the lower end at electric main shaft, makes extraneous molecule be difficult to enter bearing inside; And inner in the process of extraneous exhaust at bearing, more can form and stop molecule to enter the airflow barrier of bearing inside in the outlet port of sealing channel, thereby reach good sealing effect.
Accompanying drawing explanation
Fig. 1 is the side sectional view of the sealing configuration of a kind of electric main shaft of the utility model;
Fig. 2 is the sealing configuration exploded view of a kind of electric main shaft shown in Fig. 1;
Fig. 3 is the sectional view of a kind of embodiment's of the utility model protecting cover;
Fig. 4 is the A place partial enlarged drawing shown in Fig. 1.
Wherein: 10, body; 20, running shaft; 21, rotation base portion; 211, annular flange flange; 22, rotary head portion; 30, protecting cover; 31, annular groove; 32, aperture; 33, main lid; 331, first step portion; 332, second step portion; 34, ring part; 35, air storing cavity; 36, sealing channel.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
Refer to Fig. 1 to Fig. 4, the utility model provides a kind of sealing configuration of electric main shaft, comprises body 10, running shaft 20 and is fixedly covered on the protecting cover 30 of body 10 lower ends; For explaining conveniently, below " bearing inside " and " inside of electric main shaft " all refer to the gap between running shaft 20 and the rotation junction plane of body 10.
Described running shaft 20 comprises the rotary head portion 22 that is installed in the rotation base portion 21 of body 10 inside and protrudes out forward from these rotation base portion 21 front-end faces, and this rotary head portion 22 stretches out in outside body 10 and protecting cover 30; The front-end face of described rotation base portion 21 convexes with annular flange flange 211 downwards, and particularly, this annular flange flange 211 is formed at the edge of rotation base portion 21 front-end faces, and the cross section of this annular flange flange 211 is square; The inner side of described protecting cover 30 is provided with annular groove 31, this annular flange flange 211 is the interior formation sealing channel 36 of embedded rings connected in star 31 in the time that protecting cover 30 is assemblied on body 10, sealing passage 36 is communicated with inside extraneous and electric main shaft, and the lateral cross of sealing passage 36 is " bow " word shape; The sealing channel of this circuitous shape, makes the molecule such as extraneous iron filings, aluminium bits be difficult to enter into bearing inside, thereby prevents that bearing is impaired; And electric main shaft often has the action toward extraneous exhaust in the time of work, in the process that the air-flow of bearing inside is discharged through sealing channel 36, can form airflow barrier in the outlet port of sealing channel 36, thereby stop extraneous molecule to enter bearing inside.
Further, described annular groove 31 is near being also provided with aperture 32 on the sidewall of running shaft 20 1 sides, the head and the tail two ends of this aperture 32 are communicated with respectively extraneous and described sealing channel 36, when electric main shaft is during toward extraneous exhaust, this aperture 32 can further increase the air-flow size in sealing channel 36 outlet ports, thereby reach better screen effect, and this aperture 32 can also accelerate the discharge of gas in bearing.
Particularly, described protecting cover 30 comprises main lid 33 and ring part 34, the inner side of this main lid 33 is radially provided with adjacent first step portion 331 and second step portion 332, described ring part 34 is fixed in first step portion 331, the cross section of this ring part 34 is square, described annular groove 31 is formed between this ring part 34 and second step portion 332, and the cross section of this annular groove 31 is square; When assembling, the annular flange flange of running shaft 20 211 embeds in this annular groove 31 and forms described sealing channel 36; Described aperture 32 is formed on ring part 34; Than integrated protecting cover 30, this protecting cover 30 is divided into main lid 33 and the combined structure of ring part 34, be more conducive to manufacture.
Preferably, described protecting cover 30 is provided with air storing cavity 35, and this air storing cavity 35 is communicated with described sealing channel 36 and aperture 32, and air storing cavity 35 is by being located at the transfer port (not shown) external gas source on protecting cover 30; In electric main shaft not toward in extraneous exhaust, can also be toward the interior conveying clean gas of this air storing cavity 35, air-flow is discharged electric main shaft along sealing channel 36 and aperture 32, can realize equally the object that forms airflow barrier in outlet port, prevents that molecule from entering the object of bearing inside thereby reach.
As mentioned above, the sealing configuration of a kind of electric main shaft of the utility model, by sealing channel 36 being set in the lower end of electric main shaft, makes extraneous molecule be difficult to enter bearing inside; And inner in the process of extraneous exhaust at bearing, more can form and stop molecule to enter the airflow barrier of bearing inside in the outlet port of sealing channel 36, thereby reach good sealing effect.
To one skilled in the art, can be according to technological scheme described above and design, make other various corresponding changes and deformation, and within these all changes and deformation all should belong to the protection domain of the utility model claim.
Claims (5)
1. the sealing configuration of an electric main shaft, it is characterized in that: comprise body, running shaft and be fixedly covered on the protecting cover of body lower end, described running shaft comprises the rotary head portion that is installed in the rotation base portion of internal body and protrudes out forward from this rotation base portion front center, this rotary head portion stretches out in outside body and protecting cover, between described body and rotation base portion, be formed with the first gap, between described protecting cover and rotary head portion, be formed with the second gap, the front edge of described rotation base portion convexes with annular flange flange downwards, the inner side of described protecting cover is provided with annular groove, this annular flange flange and annular groove joggle and form sealing channel, sealing passage two ends are connected respectively the first gap and the second gap.
2. the sealing configuration of a kind of electric main shaft as claimed in claim 1, is characterized in that: described annular groove is being provided with aperture near on the sidewall of running shaft one side, and the head and the tail two ends of this aperture are communicated with respectively described the second gap and sealing channel.
3. the sealing configuration of a kind of electric main shaft as claimed in claim 2, it is characterized in that: described protecting cover comprises main lid and ring part, the inner side of this main lid is radially provided with adjacent first step portion and second step portion, described ring part is fixed in first step portion, and described annular groove is formed between this ring part and second step portion; Described aperture is opened on ring part.
4. the sealing configuration of a kind of electric main shaft as claimed in claim 1, is characterized in that: described protecting cover is provided with the air storing cavity of communication seals passage, and this air storing cavity is by being located at the transfer port external gas source on protecting cover.
5. the sealing configuration of a kind of electric main shaft as claimed in claim 1, is characterized in that: the cross section of described annular flange flange and annular groove is all square, and described sealing channel is " bow " word shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740828.1U CN203604643U (en) | 2013-11-20 | 2013-11-20 | Sealing structure of electric spindle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740828.1U CN203604643U (en) | 2013-11-20 | 2013-11-20 | Sealing structure of electric spindle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604643U true CN203604643U (en) | 2014-05-21 |
Family
ID=50717317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320740828.1U Expired - Lifetime CN203604643U (en) | 2013-11-20 | 2013-11-20 | Sealing structure of electric spindle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203604643U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613180A (en) * | 2014-09-25 | 2015-05-13 | 广州市昊志机电股份有限公司 | Improved electric spindle sealing structure and spindle core sealing device |
-
2013
- 2013-11-20 CN CN201320740828.1U patent/CN203604643U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613180A (en) * | 2014-09-25 | 2015-05-13 | 广州市昊志机电股份有限公司 | Improved electric spindle sealing structure and spindle core sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140521 |
|
| CX01 | Expiry of patent term |