CN204209429U - Rotary pneumatic sealing device - Google Patents
Rotary pneumatic sealing device Download PDFInfo
- Publication number
- CN204209429U CN204209429U CN201420549621.0U CN201420549621U CN204209429U CN 204209429 U CN204209429 U CN 204209429U CN 201420549621 U CN201420549621 U CN 201420549621U CN 204209429 U CN204209429 U CN 204209429U
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- CN
- China
- Prior art keywords
- hermetic seal
- bearing
- breather pipe
- shell
- rotary pneumatic
- 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 - Fee Related
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Abstract
A kind of rotary pneumatic sealing device, comprise hermetic seal mandrel, seal cover, bearing, oil sealing, shell and breather pipe, wherein hermetic seal core back-end docks with the activity of breather pipe one end, and bearing is arranged on hermetic seal mandrel, and oil-sealing sleeve is contained in the bearing two ends on hermetic seal mandrel, described shell is set with outward at bearing and breather pipe, shell and breather pipe are rigidly connected, and seal cover is installed on hermetic seal mandrel front end, and with case nose over glaze to tightening up.During use, two ends are connected with the vacuum absorption device on vavuum pump and machine tool chief axis respectively, secondary process thin-walled tank formula workpiece.The utility model rotary pneumatic sealing device structure is simple, easy to use, can guarantee the stable of vacuum suction frock vacuum, improve Workpiece Machining Accuracy.
Description
Technical field
The utility model relates to a kind of rotary pneumatic sealing device, this device when processing metal thin wall tank class workpiece and vacuum suction frock with the use of, belong to mechanical processing technique device technique field.
Background technology
The use occasion of metal thin-wall tank class part is a lot, as the tank of the storage dress liquid propellant in the attitude control engine of spacecraft, it is spacecraft dynamical system important component part, liquid propellant tank mainly adopted rubber bladder propellant tank both at home and abroad in the past, but the compatibility of rubber bag tank material and propellant cannot ensure long storage periods and the use of propellant, therefore be modified into all-metal diaphragm tank, Metal diaphragm tank mainly adopts the light metal materials such as the titanium alloy in non-ferrous metal, aluminium to be made.Current developed country is when Metal diaphragm tank manufactures and designs and test, what adopt is advanced metallic membrane turnover technology, overall process can be carried out to liquid propellant in all kinds of spacecraft effectively to manage, realize spacecraft rail control dynamical system once can to annotate liquid propellant needed for 15 years can the requirement of long storage periods, substantially increase the reliability that all kinds of spacecraft flies in-orbit.Metal diaphragm tank material wall thickness is δ 0.6, it is domestic at present that to add man-hour be adopt vacuum suction frock to be placed on lathe to process, the sealing of this vacuum absorption device belongs to vacuum static seal, can't guarantee its vacustat in turning process, easily causes workpiece work in-process unstability and scrap.
Utility model content
The purpose of this utility model is, in order to solve the defect of vacuum suction frock stability deficiency in above-mentioned metal thin-wall tank class work pieces process, provide a kind of rotary pneumatic sealing device, with vacuum suction frock with the use of, improve its vacuum stability, guarantee Workpiece Machining Accuracy.
For achieving the above object, rotary pneumatic sealing device described in the utility model adopts following scheme:
Described rotary pneumatic sealing device comprises hermetic seal mandrel, seal cover, bearing, oil sealing, shell and breather pipe, wherein hermetic seal core back-end docks with the activity of breather pipe one end, bearing is arranged on hermetic seal mandrel, oil-sealing sleeve is contained in the bearing two ends on hermetic seal mandrel, and install described shell outward at bearing and breather pipe, shell and breather pipe are rigidly connected, seal cover is installed on hermetic seal mandrel front end, and with case nose over glaze to tightening up.
The utility model and vacuum suction frock with the use of, processing all-metal diaphragm tank class workpiece, can guarantee the stable of vacuum suction frock vacuum, produce stable vacuum adsorption force and suck workpiece, improve Workpiece Machining Accuracy.
Accompanying drawing explanation
Fig. 1 is rotary pneumatic schematic diagram of sealing device described in the utility model;
Fig. 2 is that rotary pneumatic sealing device described in the utility model is when using and lathe and vacuum suction frock connection diagram.
In figure: 1=hermetic seal mandrel, 2-seal cover, 3-bearing, 4-oil sealing, 5-shell, 6-breather pipe, 7-spacer, 8-vacuum suction frock, 9-workpiece, 10-machine tool chief axis.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is elaborated:
As shown in the figure, rotary pneumatic sealing device described in the utility model comprises hermetic seal mandrel 1, seal cover 2, bearing 3, oil sealing 4, shell 5 and breather pipe 6, wherein hermetic seal mandrel 1 rear end is docked with the activity of breather pipe 6 one end, described bearing 3 is arranged on hermetic seal mandrel 1, for improving rotational stability, two bearings 3 are adopted in accompanying drawing embodiment, spacer 7 is housed between two bearings 3, oil sealing 4 is sleeved on bearing 3 two ends on hermetic seal mandrel 1, at bearing 3 and the described shell 5 of the outer installation of breather pipe 6, shell and breather pipe are rigidly connected by screw, seal cover 2 is installed on hermetic seal mandrel front end, by screw and case nose over glaze to tightening up.
When rotary pneumatic sealing device described in the utility model uses, be connected to spindle of numerical control lathe 10 one end, its breather pipe 6 is connected with the vacuum suction frock 8 being connected to the spindle of numerical control lathe other end through spindle of numerical control lathe 10, Metal diaphragm tank formula workpiece 9 is contained on the locating surface of vacuum suction frock 8, hermetic seal mandrel 1 front end is connected with vavuum pump, when unlatching lathe, during lathe spindle High Rotation Speed, breather pipe 6 rotates with machine tool chief axis, because shell 5 and breather pipe 6 are for being rigidly connected, shell 5 also rotates thereupon, and hermetic seal mandrel 1 is changed by bearing 3 and is not rotated with machine tool chief axis, vavuum pump passes through hermetic seal mandrel 1 and breather pipe 6 pairs of vacuum suction frock air-breathings of rotary pneumatic sealing device, make to form vacuum between vacuum suction frock and workpiece, vacuum adsorption force is produced to part.In whole process, vavuum pump all the time by rotary pneumatic sealing device to vacuum suction frock and part air-breathing, realize vacuum dynamic seal, guarantee vacuum suction frock vacustat, meet work pieces process requirement.
Rotary pneumatic sealing device major part technical requirement described in the utility model:
1, rotary pneumatic sealing mandrel: adopt 40Cr material heat treatment HRC35-42, grinding Excircle machining forms;
2, hermetic seal shell: adopt the forging of 45# material, heat treatment HRC28-32, turnery processing forms;
3, spacer: adopt 45# bar heat treatment HRC28-32, turnery processing forms;
4, breather pipe: adopt 45# materials in the tube heat treatment HRC28-32, turnery processing forms;
5, bearing, oil sealing: purchased parts.
The utility model rotary pneumatic sealing device structure is simple, easy to use, can be used as the process unit that various metal thin-wall tank class part vacuum suction adds man-hour.
Claims (2)
1. a rotary pneumatic sealing device, it is characterized in that: this device comprises hermetic seal mandrel (1), seal cover (2), bearing (3), oil sealing (4), shell (5) and breather pipe (6), wherein hermetic seal mandrel (1) rear end is docked with the activity of breather pipe (6) one end, bearing (3) is arranged on hermetic seal mandrel (1), oil sealing (4) is sleeved on bearing (3) two ends on hermetic seal mandrel (1), at bearing (3) and breather pipe (6), described shell (5) is installed outward, shell (5) and breather pipe (6) are rigidly connected, seal cover (2) is installed on hermetic seal mandrel (1) front end, and axially tighten up with shell (5) front end face.
2. rotary pneumatic sealing device as claimed in claim 1, is characterized in that: described hermetic seal mandrel (1) is equipped with two bearings (3), spacer (7) is housed between two bearings (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549621.0U CN204209429U (en) | 2014-09-23 | 2014-09-23 | Rotary pneumatic sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420549621.0U CN204209429U (en) | 2014-09-23 | 2014-09-23 | Rotary pneumatic sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204209429U true CN204209429U (en) | 2015-03-18 |
Family
ID=52978135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420549621.0U Expired - Fee Related CN204209429U (en) | 2014-09-23 | 2014-09-23 | Rotary pneumatic sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204209429U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759948A (en) * | 2017-11-09 | 2019-05-17 | 科森科技东台有限公司 | Rotary Quick clamping fixture |
| CN112265658A (en) * | 2020-10-22 | 2021-01-26 | 北京卫星环境工程研究所 | Spacecraft on-orbit fuel storage box leakage and residual amount detection simulation test system |
-
2014
- 2014-09-23 CN CN201420549621.0U patent/CN204209429U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759948A (en) * | 2017-11-09 | 2019-05-17 | 科森科技东台有限公司 | Rotary Quick clamping fixture |
| CN112265658A (en) * | 2020-10-22 | 2021-01-26 | 北京卫星环境工程研究所 | Spacecraft on-orbit fuel storage box leakage and residual amount detection simulation test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150318 Termination date: 20150923 |
|
| EXPY | Termination of patent right or utility model |