CN206169730U - Labyrinth sealing structure unit head - Google Patents
Labyrinth sealing structure unit head Download PDFInfo
- Publication number
- CN206169730U CN206169730U CN201621027232.7U CN201621027232U CN206169730U CN 206169730 U CN206169730 U CN 206169730U CN 201621027232 U CN201621027232 U CN 201621027232U CN 206169730 U CN206169730 U CN 206169730U
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- CN
- China
- Prior art keywords
- main shaft
- sleeve
- labyrinth seal
- unit head
- seal structure
- 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.)
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Abstract
The utility model belongs to the technical field of numerical control machine tool building, concretely relates to labyrinth sealing structure unit head. Which comprises a housin, movable mounting has the sleeve in the casing, in the sleeve through the bearing with main shaft swing joint, be equipped with labyrinth sealing structure between the power take off of main shaft end and the sleeve, the sleeve rear end is equipped with the drive mechanism that feeds that driven sleeve and main shaft sharply fed, the tail end of main shaft still is connected with and makes main shaft pivoted main transfer machinery. The utility model discloses have dustproof and waterproof the function, and feed drive mechanism can can not lose the main shaft after long -time use the feeding accuracy.
Description
Technical field
This utility model belongs to Digit Control Machine Tool manufacturing technology field, and in particular to a kind of labyrinth seal structure unit head.
Background technology
The exterior protection structure of Digit Control Machine Tool unit head generally includes motor case body, connection casing and housing, current shell
Body front end forms the protection to main shaft and related precision component, the clamping that workpiece passes through front-end of spindle fixture using mechanical seal
Processing is completed, is to reduce the abrasion of cutter and being thermally deformed for workpiece in the course of processing, it is necessary to which unit head and cutter spray are cut
Liquid is cut, when cutting fluid is sprayed to unit head, the gap for having a small amount of cutting fluid Jing housing forward end mechanical sealing member penetrates into
In the bearing of support main shaft, corrosion bearing, and once bearing is by corrosion, the precision of main shaft will be lost, and the precision for processing workpiece reaches
Less than requiring；Additionally, the feeding drive mechanism of Digit Control Machine Tool unit head is after long-time use, the feed accuracy of main shaft can lose
Lose.
The content of the invention
The purpose of this utility model is：There is provided a kind of with dustproof and waterproof and feeding drive mechanism can be in long-time
The labyrinth seal structure unit head of the feed accuracy of main shaft will not be lost after use.
This utility model solves the technical scheme that its technical problem adopted：
A kind of labyrinth seal structure unit head, including housing, are movably installed with sleeve, in the sleeve in the housing
It is connected with spindle mobility by bearing, between the clutch end and sleeve of the main shaft labyrinth seal structure is provided with, it is described
Sleeve rear end is provided with the feeding drive mechanism with moving sleeve and main shaft straight-line feed, and the tail end of the main shaft is also associated with making main shaft
The main drive gear of rotation.
The labyrinth seal structure includes waterproof cover, oil sealing and dustproof sheet, the oil sealing be arranged on sleeve and main shaft it
Between, the waterproof cover and dustproof sheet are arranged on the front end of the oil sealing, the axle table of the inner surface of the waterproof cover and the main shaft
Face coordinates, and the dustproof sheet outside is with waterproof cover junction into step labyrinth seal, the main shaft and waterproof cover and dustproof sheet
Between gap constitute bending.
The feeding drive mechanism includes the feeding motor being arranged on housing, and the housing both sides are provided with what is be parallel to each other
Linear guides, the slide block of the linear guides is provided with connector, and retainer is provided between the connector, the retainer
By screw connection wire rod, the other end connects the tail end of the sleeve and is provided with the through hole worn for main shaft, the screw mandrel for one end
One end by shaft coupling with it is described feeding motor output shaft be fixedly connected.
The main drive gear includes main driving motor, and the output shaft of the main driving motor is provided with belt pulley one, institute
The tail end for stating main shaft is provided with belt pulley two, and between the belt pulley one and belt pulley two driving belt is provided with.
The feeding motor is servomotor.
The main driving motor is servomotor.
The feeding motor connects the housing by motor mount.
The mounting seat that the housing includes power casing and installs for main drive gear.
This utility model is prominent and beneficial compared to existing technology to be had the technical effect that：
1. the design that this utility model passes through labyrinth seal structure so that unit head has dustproof and waterproof function so that
The sprinkling of coolant will not corrode the bearing in unit head.
2. the design that this utility model is connected with screw mandrel by feeding motor by shaft coupling, instead of conventional belt and connects
Connect so that work efficiency is uprised and can used for a long time, and structure becomes simple.
3. the design that this utility model passes through linear guides so that the feed accuracy of main shaft is more accurate.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is main view cross-sectional schematic of the present utility model.
Fig. 3 is enlarged drawing at the A of Fig. 2.
In figure：1- housings；2- sleeves；3- bearings；4- main shafts；5- waterproof covers；6- oil sealings；7- dustproof sheets；8- feeds motor；
9- linear guides；10- slide blocks；11- connectors；12- retainers；13- screws；14- screw mandrels；15- through holes；16- shaft couplings；17-
Main driving motor；18- belt pulleys one；19- belt pulleys two；20- driving belts；21- motor mounts；22- power casings；
23- mounting seats.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is further described with specific embodiment：
A kind of labyrinth seal structure unit head, including housing 1 as shown in Figure 1 to Figure 3, activity in the housing 1 is installed
Have in sleeve 2, the sleeve 2 and be flexibly connected with main shaft 4 by bearing 3, between the clutch end and sleeve 2 of the main shaft 4
Labyrinth seal structure is provided with, the rear end of the sleeve 2 is provided with the feeding drive mechanism with moving sleeve 2 and the straight-line feed of main shaft 4, institute
The tail end for stating main shaft 4 is also associated with the main drive gear for rotating main shaft 4.
The labyrinth seal structure includes waterproof cover 5, oil sealing 6 and dustproof sheet 7, and the oil sealing is arranged on sleeve and main shaft
Between, the waterproof cover 5 and dustproof sheet 7 are arranged on the front end of the oil sealing 6, the inner surface of the waterproof cover 5 and the main shaft 4
Axle surface engagement, the outside of the dustproof sheet 7 is with the junction of waterproof cover 5 into step labyrinth seal, the main shaft 4 and waterproof cover
Gap between 5 and dustproof sheet 7 constitutes bending.A series of axial directions and footpath that labyrinth seal structure of the present utility model has
Gap to arrangement makes pollutant and cutting fluid more be difficult to enter bearing, produces throttle effect by tortuous labyrinth seal and reaches
Cutting fluid is prevented to penetrate into bearing part, labyrinth seal does not produce any friction and do not limit rotating speed, is particularly suited for rotation at a high speed
Unit head shaft end seal.
The feeding drive mechanism includes the feeding motor 8 being arranged on housing, and the both sides of the housing 1 are provided with and are parallel to each other
Linear guides 9, the slide block 10 of the linear guides 9 is provided with connector 11, retainer 12 is provided between the connector 11,
By the connection wire rod 14 of screw 13, the other end connects the tail end of the sleeve 2 and is provided with for main shaft 4 for one end of the retainer 12
The through hole 15 for wearing, one end of the screw mandrel 14 is fixedly connected by shaft coupling 15 with the output shaft of the feeding motor 8.Screw mandrel
The horizontal axis that the rotary motion of screw mandrel 14 be converted into screw 13 can be moved with engaging for screw 13, so that screw 13 drives
Retainer 12 is moved axially along main shaft.Retainer 12 can be subject to be connected to linearly leading for the both sides of retainer 12 in moving process
The restriction of rail 9, it is ensured that the stability and reliability of the axial movement of retainer 12, this uses new screw mandrel and screw, preferably
Ground is ballscrew nut fitting, and the transmission efficiency of ball screw assembly, positioning precision and repetitive positioning accuracy are high, service life
It is long, can also use common leading screw in order to cost-effective；And the feeding motor of general unit head is connected with screw mandrel by belt
Connect, but belt connection can produce frictional force so that and feed accuracy is inaccurate, while the long-time of belt is needed using fragile
Change, and this utility model feeding motor is directly fixedly connected by shaft coupling with screw mandrel, solves the shortcoming of belt connection.
The main drive gear includes main driving motor 17, and the output shaft of the main driving motor 17 is provided with belt pulley one
18, the tail end of the main shaft 4 is provided with belt pulley 2 19, and between the belt pulley 1 and belt pulley 2 19 driving belt is provided with
20。
The feeding motor 8 is servomotor.
The main driving motor 17 is servomotor.Servomotor can make control speed, and positional precision is very accurate, can be with
Voltage signal is converted into into torque and rotating speed with drive control object.Servo motor rotor rotating speed is controlled by input signal, and energy
Fast reaction, in automatic control system, as executive component, and with electromechanical time constant it is little, the linearity is high, pickup voltage
Etc. characteristic, the angular displacement or angular velocity output that the signal of telecommunication for being received can be converted on motor reel.
The feeding motor 8 connects the housing 1 by motor mount 21.If feeding motor 8 is directly connected with object
, the rotation and supplying position to screw mandrel has large effect, and passes through motor mount 21 and screw mandrel is pacified in motor
It is connected with the output shaft of feeding motor 8 in dress seat 21, enables the retracted position of main shaft more remote while can also turning to screw mandrel
It is dynamic more accurate.
The mounting seat 23 that the housing 1 includes power casing 22 and installs for main drive gear.Housing is split as to move
Power casing 22 and mounting seat 23, facilitate the installation of unit head so that the replacing of part is more convenient.
Operation principle of the present utility model, main driving motor 17 passes through belt pulley 1, driving belt 20 and belt pulley two
19, drive main shaft 4 to rotate, ensure the main chip power of the course of work of main shaft 4.When feeding is needed, feeding motor 8 rotates,
The screw mandrel 14 being fixedly connected with feeding motor 8 is driven to rotate, when screw mandrel 14 rotates, screw mandrel can be by screw mandrel with engaging for screw 13
14 rotary motion is converted into the horizontal axis movement of screw 13, so that screw 13 drives retainer 12 axially to move along main shaft
It is dynamic.Retainer 12 can be limited in moving process by the linear guides 9 for being connected to the both sides of retainer 12, it is ensured that transmission
The stability and reliability of the axial movement of seat 12.Because retainer 12 is fixedly connected with sleeve 2, and sleeve 2 and retainer 12
On same axial line, the retainer 12 of axial movement equally can outward be moved horizontally with moving sleeve 2, and the inner side of sleeve 2 is logical
Cross bearing 3 to be connected with the outside of main shaft 4, so as to drive main shaft 4 protruding, realize the feeding during main shaft 4 rotates.
Above-described embodiment is only preferred embodiment of the present utility model, and protection model of the present utility model is not limited according to this
Enclose, therefore：All equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by protection of the present utility model
Within the scope of.
Claims (8)
1. a kind of labyrinth seal structure unit head, it is characterised in that：Including housing (1), it is movably installed with the housing (1)
It is flexibly connected with main shaft (4) by bearing (3) in sleeve (2), the sleeve (2), clutch end and the set of the main shaft (4)
Labyrinth seal structure is provided between cylinder (2), the sleeve rear end is provided with entering with moving sleeve (2) and main shaft (4) straight-line feed
To drive mechanism, the tail end of the main shaft (4) is also associated with the main drive gear for rotating main shaft (4).
2. a kind of labyrinth seal structure unit head according to claim 1, it is characterised in that：The labyrinth sealing knot
Structure includes waterproof cover (5), oil sealing (6) and dustproof sheet (7), and the oil sealing is arranged between sleeve and main shaft, the waterproof cover (5)
With the front end that dustproof sheet (7) is arranged on the oil sealing (6), the inner surface of the waterproof cover (5) and the axle surface of the main shaft (4)
Coordinate, dustproof sheet (7) outside is with waterproof cover (5) junction into step labyrinth seal, the main shaft (4) and waterproof cover
(5) gap and between dustproof sheet (7) constitutes bending.
3. a kind of labyrinth seal structure unit head according to claim 1, it is characterised in that：The feeding drive mechanism
Including the feeding motor (8) on housing (1), housing (1) both sides are provided with the linear guides (9) being parallel to each other, institute
The slide block (10) for stating linear guides (9) is provided with connector (11), and retainer (12) is provided between the connector (11), transmission
By screw (13) connection wire rod (14), the other end connects the tail end of the sleeve (2) and is provided with and supplies main shaft for one end of seat (12)
(4) through hole (15) for wearing, one end of the screw mandrel (14) is consolidated by shaft coupling (16) with the output shaft of feeding motor (8)
Fixed connection.
4. a kind of labyrinth seal structure unit head according to claim 1, it is characterised in that：The main drive gear bag
Main driving motor (17) is included, the output shaft of the main driving motor (17) is provided with belt pulley one (18), the tail of the main shaft (4)
End is provided with belt pulley two (19), and driving belt (20) is provided between the belt pulley one (18) and belt pulley two (19).
5. a kind of labyrinth seal structure unit head according to claim 3, it is characterised in that：Feeding motor (8)
For servomotor.
6. a kind of labyrinth seal structure unit head according to claim 4, it is characterised in that：The main driving motor
(17) it is servomotor.
7. a kind of labyrinth seal structure unit head according to claim 3, it is characterised in that：Feeding motor (8)
The housing (1) is connected by motor mount (21).
8. a kind of labyrinth seal structure unit head according to claim 1, it is characterised in that：The housing (1) includes
Power casing (22) and the mounting seat (23) installed for main drive gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621027232.7U CN206169730U (en) | 2016-08-31 | 2016-08-31 | Labyrinth sealing structure unit head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621027232.7U CN206169730U (en) | 2016-08-31 | 2016-08-31 | Labyrinth sealing structure unit head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206169730U true CN206169730U (en) | 2017-05-17 |
Family
ID=58675087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621027232.7U Active CN206169730U (en) | 2016-08-31 | 2016-08-31 | Labyrinth sealing structure unit head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206169730U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732384A (en) * | 2019-03-18 | 2019-05-10 | 台州铭纹机床有限公司 | A kind of Show knife head |
-
2016
- 2016-08-31 CN CN201621027232.7U patent/CN206169730U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732384A (en) * | 2019-03-18 | 2019-05-10 | 台州铭纹机床有限公司 | A kind of Show knife head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 317609 No. 58 Changshun Road, Shamen Industrial Zone, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: Zhejiang Shuangzheng Science and Technology Co., Ltd. Address before: 317609 Longxi Town Industrial Zone, Yuhuan County, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG SHUANGZHENG MACHINE TOOL CO., LTD. |
|
| CP03 | Change of name, title or address |