CN204555988U - A kind of high repetitive positioning accuracy mechanism of vacuum plant hatch door - Google Patents
A kind of high repetitive positioning accuracy mechanism of vacuum plant hatch door Download PDFInfo
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- CN204555988U CN204555988U CN201520154333.XU CN201520154333U CN204555988U CN 204555988 U CN204555988 U CN 204555988U CN 201520154333 U CN201520154333 U CN 201520154333U CN 204555988 U CN204555988 U CN 204555988U
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- repetitive positioning
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Abstract
The utility model discloses a kind of vacuum plant hatch door height repetitive positioning accuracy mechanism, relate to the calibrating installation of star sensor under a kind of combinational environment, for the repetitive positioning accuracy mechanism of simulates real Altitude device hatch door.Comprise hatch door (1), vacuum plant (2), vacuum plant is provided with register pin (3), hatch door correspondence position arranges pin-and-hole (4), hatch door is docked with vacuum plant, in symmetric position, set bolt (5) is installed, hatch door (1) is upper installs high flatness transmissive glass, and by packoff with bonding mode is fastening and sealing.The utility model solves the high repetitive positioning accuracy installation question of vacuum plant hatch door, ensures consistance and the repeatability of fixed star simulator light path, realizes the accurate calibration of star sensor in vacuum combinational environment.
Description
Technical field
The utility model belongs to aerospace measurement technical field, relates to the calibrating installation of star sensor under a kind of combinational environment, for the repetitive positioning accuracy mechanism of simulates real Altitude device hatch door.
Background technology
Star sensor is the high precision sensor utilizing star observation to obtain spacecraft three-axis attitude, and star sensor accurate calibration is the important step realizing its attitude measurement.Common star sensor calibrating method has two kinds: one utilizes starlight analog device to coordinate high precision two-axis platcform to carry out data acquisition and calibration; Another kind takes to obtain data to the sunny night sky in the good place of atmospheric environment and calibrates, and laboratory investment method has better stability, not by the restriction of the conditions such as ambient weather, applies more extensive.Common star sensor laboratory investment device generally comprises: fixed star simulator, high-precision two-dimensional turntable, computing machine, optics hover platform etc.
Star sensor is placed in high/low temperature vacuum environment by calibration for star sensor under combinational environment usually, high-precision dual-axis turntable drives the probe of star sensor to rotate together, and fixed star simulator is placed in laboratory environment, namely parallel rays is sent by fixed star simulator, the light of simulation fixed star in space, realized the transmission of simulation starlight by high flatness transmissive glass, received by star sensor.
In order to ensure the accuracy that star sensor is calibrated, the consistance of light path and repeatability must be ensured, and in light transmition process, the unique refracting medium existed is installed on the transmissive glass on vacuum plant hatch door, and under vacuum conditions, owing to there is pressure difference in this transmissive glass, certainly exist certain deflection, if the position of glassy phase on vacuum plant changes and must affect the transmission path of light after shutting hatch door at every turn, therefore inevitable requirement vacuum plant hatch door has higher repetitive positioning accuracy, ensure that the refraction deviation of each light is identical, for the later stage, the error compensation of calibration provides foundation.
General vacuum plant volume is larger, and hatch door only plays sealing function, to the precision not requirement substantially that hatch door is installed, therefore according to function and the installation requirement of hatch door, general hatch door adopts hinged mode, and not only handled easily used but also can meet request for utilization.When vacuum cabin door is heavier, hinge eccentric connects, and when hatch door is opened, forms bending moment, frequent switch gate, fragile, affects positioning precision.General vacuum plant does not have positioning requirements for hatch door, more cannot meet resetting needs repeatedly.
Utility model content
For prior art Problems existing, the utility model provides a kind of vacuum plant hatch door height repetitive positioning accuracy mechanism, object is the high repetitive positioning accuracy installation question solving vacuum plant hatch door, ensure consistance and the repeatability of fixed star simulator light path, realize the accurate calibration of star sensor in high/low temperature vacuum combinational environment.
In order to solve the problem, the utility model provides a kind of vacuum plant hatch door height repetitive positioning accuracy mechanism, comprise hatch door, vacuum plant, described hatch door is provided with two register pins, the correspondence position of described vacuum plant arranges pin-and-hole, register pin is inserted pin-and-hole dock, then utilize set bolt to be fastenedly connected.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, described hatch door is installed high flatness transmissive glass, and completes fastening and sealing by packoff and bonding mode.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, described hatch door docks with vacuum plant, and both are less than or equal to 0.02mm at right alignment.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, described hatch door fixedly mounts 8 bolts.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, described bolt is hexagon head bolt.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, described register pin is straight pin.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, described vacuum plant is also applicable to high/low temperature vacuum environment, temperature-60 ~ 80 DEG C.
Vacuum plant hatch door height repetitive positioning accuracy mechanism as above, is sealed by rubber seal between described hatch door and vacuum plant.
The beneficial effects of the utility model: be to be located by register pin and bolted realizes repeating between hatch door and vacuum plant and installs, realize the repetitive positioning accuracy of high flatness transmissive glass, ensure the consistance of light point, realize the coherence request of light refraction angle deviation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is the stereographic map of the high repetitive positioning accuracy mechanism of vacuum plant hatch door, wherein:
1-hatch door 2-vacuum plant 3-register pin, 4-pin-and-hole, 5-set bolt
Embodiment
As shown in Figure 1, vacuum plant hatch door height repetitive positioning accuracy mechanism comprises hatch door 1, vacuum plant 2, hatch door 1 is provided with two register pins 3, vacuum plant 2 correspondence position arranges pin-and-hole 4, hatch door 1 is installed high flatness transmissive glass, and complete fastening and sealing by packoff and bonding mode, the hatch door 1 that high flatness transmissive glass is housed is docked with vacuum plant 2, and be less than or equal to 0.02mm based on the right alignment both respective basal plane is ensured by measuring method, sealed by rubber seal between hatch door 1 and vacuum plant 2.
When installing hatch door 1, the pin-and-hole 4 being inserted vacuum plant 2 by register pin 3 is positioned, and then installs hatch door 1 and fix hexagon head bolt 5.
In the specific implementation, the environment of employing is the vacuum environment with high/low temperature, temperature-60 ~ 80 DEG C, single star simulator is placed in high/low temperature vacuum chamber 2, simulation starlight is by the high plane transmission glass transmission of hatch door, and star sensor receives simulation starlight, carries out calibration and detects.
The repetitive positioning accuracy that the hatch door of final detection is installed is ± 1 ", meet the test request of star sensor.
Be described in detail the utility model in conjunction with the accompanying drawings and embodiments above, the utility model structure as the aforementioned, really can reach the functions and effects of expection.But the explanation of above-mentioned the utility model embodiment is in order to disclose feature of the present utility model, and unrestricted rights and interests of the present utility model.Parts material involved by all the utility model, the change of outward appearance or the equivalence of using method exchange for, still belong to category of the present utility model.
Claims (8)
1. a vacuum plant hatch door height repetitive positioning accuracy mechanism, comprise hatch door (1), vacuum plant (2), it is characterized in that: hatch door (1) is provided with two register pins (3), the correspondence position of vacuum plant (2) arranges pin-and-hole (4), register pin (3) is inserted pin-and-hole (4) dock, then utilize set bolt (5) to be fastenedly connected.
2. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 1, is characterized in that: described hatch door (1) is upper installs high flatness transmissive glass, and completes fastening and sealing by packoff and bonding mode.
3. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 1 and 2, is characterized in that: described hatch door (1) docks with vacuum plant (2), and both are less than or equal to 0.02mm at right alignment.
4. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 1 and 2, is characterized in that: described hatch door (1) fixed installation 8 bolts (3).
5. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 4, is characterized in that: described bolt (3) is hexagon head bolt.
6. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 1 and 2, is characterized in that: described register pin (5) is straight pin.
7. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 1 and 2, is characterized in that: described vacuum plant (2) is also applicable to high/low temperature vacuum environment, temperature-60 ~ 80 DEG C.
8. vacuum plant hatch door height repetitive positioning accuracy mechanism according to claim 1 and 2, be is characterized in that: sealed by rubber seal between described hatch door (1) and vacuum plant (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520154333.XU CN204555988U (en) | 2015-03-19 | 2015-03-19 | A kind of high repetitive positioning accuracy mechanism of vacuum plant hatch door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520154333.XU CN204555988U (en) | 2015-03-19 | 2015-03-19 | A kind of high repetitive positioning accuracy mechanism of vacuum plant hatch door |
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| CN204555988U true CN204555988U (en) | 2015-08-12 |
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| CN201520154333.XU Active CN204555988U (en) | 2015-03-19 | 2015-03-19 | A kind of high repetitive positioning accuracy mechanism of vacuum plant hatch door |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108583935A (en) * | 2018-03-12 | 2018-09-28 | 上海卫星工程研究所 | Spaceborne star sensor high precision high stability degree installation method |
-
2015
- 2015-03-19 CN CN201520154333.XU patent/CN204555988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108583935A (en) * | 2018-03-12 | 2018-09-28 | 上海卫星工程研究所 | Spaceborne star sensor high precision high stability degree installation method |
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