CN207479623U - A kind of Pneumatic rotary connector - Google Patents
A kind of Pneumatic rotary connector Download PDFInfo
- Publication number
- CN207479623U CN207479623U CN201721416475.4U CN201721416475U CN207479623U CN 207479623 U CN207479623 U CN 207479623U CN 201721416475 U CN201721416475 U CN 201721416475U CN 207479623 U CN207479623 U CN 207479623U
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- outer housing
- front connector
- connector
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- hole
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Abstract
The utility model discloses a kind of Pneumatic rotary connectors, including outer housing, front connector, rear joint and pressure rotary shaft sealing, front connector is used for the tail end of connecting machine tool main shaft, rear joint is used to connect gas-tpe fitting, outer housing is front and rear to be connected, the front end sleeve of front connector is equipped with sealing ring, nut is provided in front connector, the rear side of front connector is mounted on through bearing in outer housing, the first central through hole is offered in front connector, rear joint is fixed on the rear end of outer housing, the second central through hole of the first central through hole of face is offered in rear joint, pressure rotary shaft sealing is tightly placed in the rear end of front connector and is fixed on outer housing.The rotary joint structure is simple, good airproof performance is, it can be achieved that the center blowing function of central water outlet main shaft.The cost of the Pneumatic rotary connector is low, and for each cost less than 200 yuan, production cost is low, is conducive to user and reduces outsourcing cost, reduces the operation type of the main shaft on type of the same race.
Description
Technical field
The utility model is related to a kind of numerically-controlled machine tool rotary joint, specifically a kind of Pneumatic rotary connector.
Background technology
Main-shaft core water flowing out structure on numerically-controlled machine tool will generally use rotary joint, realize the central water outlet work(of main shaft
Energy.The speed of mainshaft is high in numerically-controlled machine tool process, it is desirable that rotary joint has the features such as high rotating speed, good airproof performance, to meet
The high-speed sealing requirement of main shaft, thus it is high to the part processing request of rotary joint, and the selection of part is as light reliable as possible,
This is virtually added significantly to the processing cost of rotary joint, leads to the higher price of rotary joint.And rotary joint is usually
Outsourcing piece, the price of common rotary joint is also at thousand yuan or more, therefore the production cost of user is higher on the market.
Main shaft is the normal with option of numerically-controlled machine tool with central water outlet function choosing-item, therefore same specification type is often same
When common main shaft is configured and with this two main shaft of central water outlet main shaft.Type at present on the market is various in style, and main shaft specification
It is 2 times of type kind quantity, the production maintenance cost for leading to main shaft is also excessively high.
Invention content
Technical problem to be solved in the utility model is：In view of the deficiencies of the prior art, it provides a kind of simple in structure, close
Good, the at low cost Pneumatic rotary connector of envelope property, the Pneumatic rotary connector are suitable for central water outlet main shaft, it can be achieved that central water outlet master
The center blowing function of axis, and then the production type of main shaft is reduced, reduce enterprise's production cost.
Technical solution is used by the utility model solves above-mentioned technical problem：A kind of Pneumatic rotary connector, including outer
Housing, front connector, rear joint and pressure rotary shaft sealing, the front connector is used for the tail end of connecting machine tool main shaft, after described
For connecting gas-tpe fitting, the outer housing is front and rear to be connected connector, and the front end sleeve of the front connector is equipped with sealing ring, described
Front connector on be provided with nut, the rear side of the front connector is mounted on through bearing in the outer housing, is connect before described
The first central through hole is offered in head, the rear joint is fixed on the rear end of the outer housing, is opened in the rear joint
The second central through hole equipped with the first central through hole described in face, the pressure rotary shaft sealing are tightly placed in the front connector
Rear end and be fixed on the outer housing.
After the installation of the utility model Pneumatic rotary connector, in use, front connector is followed by with machine tool chief axis high speed rotation
Head and gas-tpe fitting and outer housing are fixed, and the low-pressure air that transtracheal connector enters the second central through hole directly passes through first
Central through hole enters the tail end of machine tool chief axis, realizes main-shaft core blowing function.Front connector is passed through by rear joint in low-pressure air
Into machine tool chief axis tail end during, pressure rotary shaft sealing plays preferable sealing function.The sealing of pressure rotary shaft sealing
End is small with the contact area of front connector, can bear the sealing that linear velocity reaches 40m/s, and in fact, for example in machine tool mechanical main shaft
In the high-speed rotation of 6000rpm, the linear velocity at similary position is only 6m/s, and therefore, the utility model Pneumatic rotary connector uses
Pressure rotary shaft sealing have excellent leakproofness, it can be ensured that the realization of main-shaft core blowing function.
Preferably, the rear end of the front connector is narrow diameter section, offer on the inner wall of the outer housing with it is described
The annular cavity that is adapted of pressure rotary shaft sealing, the pressure rotary shaft sealing is arranged in the annular cavity, described
Pressure rotary shaft sealing be tightly placed in the narrow diameter section.The setting of annular cavity convenient for the assembling of pressure rotary shaft sealing, and makes
The more compact structure of rotary joint.
Further, bleeder port is offered on the side wall of the outer housing, the bleeder port and the annular are recessed
Chamber communicates.Bleeder port can discharge the gas and water that may be leaked during machine tooling in time, it is ensured that safety.
Preferably, the bearing is two deep groove ball bearings, the deep groove ball bearing described in two is separated by a spacer.
Preferably, the rear joint is fixed on the rear end of the outer housing through several screws.
Compared with prior art, the utility model has the advantage of：Pneumatic rotary joint structure provided by the utility model
Simply, good airproof performance, suitable for central water outlet main shaft, it can be achieved that the center blowing function of central water outlet main shaft.The Pneumatic rotary
The cost of connector is low, and for each cost less than 200 yuan, production cost is low, is conducive to user and reduces outsourcing cost, reduces of the same race
The operation type of main shaft on type.
Description of the drawings
Fig. 1 is the structure cut-away illustration of Pneumatic rotary connector in embodiment.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing embodiment.
The Pneumatic rotary connector of embodiment, as shown in Figure 1, being rotated including outer housing 1, front connector 2, rear joint 3 and pressure
Axle envelope 4, front connector 2 are used for connecting machine tool main shaft（It is not shown in figure）Tail end, rear joint 3 is for connecting gas-tpe fitting（In figure
It is not shown）, outer housing 1 is front and rear to be connected, and the front end sleeve of front connector 2 is equipped with sealing ring 21, and nut has been wholely set in front connector 2
22, the rear side of front connector 2 is mounted on through bearing in outer housing 1, the first central through hole 23 is offered in front connector 2, rear joint 3 passes through
Several screws 31 are fixed on the rear end of outer housing 1, and the second central through hole of the first central through hole of face 23 is offered in rear joint 3
32, the rear end of front connector 2 is narrow diameter section 24, and it is recessed that the annular being adapted with pressure rotary shaft sealing 4 is offered on the inner wall of outer housing 1
Chamber 11, pressure rotary shaft sealing 4 are arranged in annular cavity 11, and pressure rotary shaft sealing 4 is tightly placed in narrow diameter section 24 and is fixed on outer
On housing 1.
In the present embodiment, bleeder port 12 is offered on the side wall of outer housing 1, bleeder port 12 is communicated with annular cavity 11.
In the present embodiment, bearing is two deep groove ball bearings 5, and two deep groove ball bearings 5 are separated by a spacer 51.
After the installation of the utility model Pneumatic rotary connector, in use, front connector 2 is with machine tool chief axis high speed rotation, after
Connector 3 and gas-tpe fitting and outer housing 1 are fixed, and the low-pressure air that transtracheal connector enters the second central through hole 32 is directly logical
The tail end that the first central through hole 23 enters machine tool chief axis is crossed, realizes main-shaft core blowing function, and then reduce the production kind of main shaft
Class reduces enterprise's production cost.During low-pressure air enters the tail end of machine tool chief axis by rear joint 3 by front connector 2,
Pressure rotary shaft sealing 4 plays preferable sealing function.
Claims (5)
1. a kind of Pneumatic rotary connector, it is characterised in that：It is described including outer housing, front connector, rear joint and pressure rotary shaft sealing
Front connector be used for the tail end of connecting machine tool main shaft, the rear joint is for connecting gas-tpe fitting, before and after the outer housing
Conducting, the front end sleeve of the front connector are equipped with sealing ring, nut are provided in the front connector, after the front connector
Side is mounted on through bearing in the outer housing, the first central through hole is offered in the front connector, the rear joint is consolidated
The rear end of the outer housing is scheduled on, the second center that the first central through hole described in face is offered in the rear joint leads to
Hole, the pressure rotary shaft sealing are tightly placed in the rear end of the front connector and are fixed on the outer housing.
2. a kind of Pneumatic rotary connector according to claim 1, it is characterised in that：The rear end of the front connector is narrow diameter
Portion offers the annular cavity being adapted with the pressure rotary shaft sealing, the pressure on the inner wall of the outer housing
Rotary shaft sealing is arranged in the annular cavity, and the pressure rotary shaft sealing is tightly placed in the narrow diameter section.
3. a kind of Pneumatic rotary connector according to claim 2, it is characterised in that：It is opened up on the side wall of the outer housing
There is bleeder port, the bleeder port is communicated with the annular cavity.
4. a kind of Pneumatic rotary connector according to claim 1, it is characterised in that：The bearing is two deep-groove ball axis
It holds, the deep groove ball bearing described in two is separated by a spacer.
5. a kind of Pneumatic rotary connector according to claim 1, it is characterised in that：The rear joint is consolidated through several screws
It is scheduled on the rear end of the outer housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721416475.4U CN207479623U (en) | 2017-10-30 | 2017-10-30 | A kind of Pneumatic rotary connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721416475.4U CN207479623U (en) | 2017-10-30 | 2017-10-30 | A kind of Pneumatic rotary connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207479623U true CN207479623U (en) | 2018-06-12 |
Family
ID=62478279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721416475.4U Active CN207479623U (en) | 2017-10-30 | 2017-10-30 | A kind of Pneumatic rotary connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207479623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578724A (en) * | 2018-12-28 | 2019-04-05 | 宁波迈途机械科技有限公司 | A kind of Multi-channel rotating joint |
-
2017
- 2017-10-30 CN CN201721416475.4U patent/CN207479623U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578724A (en) * | 2018-12-28 | 2019-04-05 | 宁波迈途机械科技有限公司 | A kind of Multi-channel rotating joint |
| CN109578724B (en) * | 2018-12-28 | 2024-02-09 | 宁波迈途机械科技有限公司 | Multichannel rotary joint |
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