CN113432942B - Honeycomb panel sample preparation device for satellite - Google Patents
Honeycomb panel sample preparation device for satellite Download PDFInfo
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- CN113432942B CN113432942B CN202110626614.0A CN202110626614A CN113432942B CN 113432942 B CN113432942 B CN 113432942B CN 202110626614 A CN202110626614 A CN 202110626614A CN 113432942 B CN113432942 B CN 113432942B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
The invention provides a honeycomb plate sample preparation device for a satellite, which comprises a base, a first adjusting component, a second adjusting component, a pressing plate and a pressure sensor, wherein a first supporting structure is arranged on the base, the pressing plate is installed on the first supporting structure through the first adjusting component, a first accommodating space is arranged between the pressing plate and the base and used for placing a honeycomb plate sample, and the pressure sensor is arranged along the circumferential direction of the honeycomb plate sample and is arranged in the first accommodating space; the second adjusting component is connected with the pressure sensor and is used for zero setting of the pressure sensor; the first adjusting assembly can drive the pressing plate to move so as to adjust the honeycomb panel sample to a set pressure, the preparation device disclosed by the invention can be used in a normal-temperature curing environment and a high-temperature curing environment, and is simple in structure, low in cost, convenient to mount and dismount and high in sample preparation efficiency.
Description
Technical Field
The invention relates to the technical field of composite material assembly, in particular to a honeycomb plate sample preparation device for a satellite.
Background
As one of the most important structural members of a satellite, the structural strength of a cellular board for a satellite has important influences on the operation of satellite-borne equipment, the stability of the whole satellite structure and the service life of the satellite. The honeycomb plate mainly comprises an upper skin, a lower skin and a honeycomb core, and is bonded into an integral rigid structure through an adhesive, so that the bonding performance of the adhesive directly influences the structural strength of the honeycomb plate.
Because the adhesive has batch difference, the bonding performance of the adhesive needs to be checked by preparing samples before the adhesive is put into use, two curing parameters, namely curing temperature and curing pressure, mainly exist for plate-core bonding in a honeycomb plate structure, and the bonding performance of the adhesive can be accurately measured by accurately controlling the curing parameters to prepare a honeycomb plate sample.
In actual production, if an autoclave is adopted for sample preparation, only one sample in a pressure state can be prepared for high-temperature curing adhesive each time, the sample preparation efficiency is low, and the equipment cost is high; for a normal-temperature adhesive, when an autoclave is used for pressurization, the temperature in the autoclave can also change, so that the curing temperature is unstable, the prepared sample is difficult to accurately measure the bonding characteristics of the adhesive, and in addition, a large amount of curing agent can be volatilized when a vacuum bag is prepared, so that the bonding performance of the adhesive is influenced.
Patent document CN 10556896B discloses a honeycomb panel molding apparatus and a method for producing a honeycomb panel using the same. The honeycomb plate forming equipment comprises an air compressor, a stop valve, a pressure gauge, an upper cover plate, an air bag, a fixing device, a stand and a platform. The equipment enables the air bag to expand to generate pressure, the panel and the bottom plate are bonded with the honeycomb core to be formed under the action of the pressure and the adhesive, and the pressure of the honeycomb plate is changed due to the fact that the air bag is influenced by the temperature during high-temperature curing of the design.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a honeycomb plate sample preparation device for a satellite.
The invention provides a honeycomb plate sample preparation device for a satellite, which comprises a base, a first adjusting component, a second adjusting component, a pressing plate and a pressure sensor, wherein the base is provided with a first adjusting hole;
the base is provided with a first supporting structure, the pressing plate is installed on the first supporting structure through a first adjusting assembly, a first accommodating space is arranged between the pressing plate and the base and used for placing a honeycomb panel sample, and the pressure sensors are arranged along the circumferential direction of the honeycomb panel sample and are arranged in the first accommodating space;
the second adjusting component is arranged on the base and connected with the pressure sensor for zero setting of the pressure sensor;
the first adjusting component can drive the pressing plate to move towards or away from the base, and then the honeycomb plate sample can be adjusted to a set pressure.
Preferably, when the pressure sensor is adjusted to zero, a deformation adjusting part is installed between the pressing plate and the honeycomb plate sample, and the deformation adjusting part is removed after the zero adjustment is completed.
Preferably, the first adjusting assembly comprises an adjusting rod, a spring cup seat, a spring pressing plate and a spring;
the bottom of spring cup seat is connected the clamp plate, the inside of spring cup seat is provided with the second accommodation space, the spring mounting is in the second accommodation space, the spring clamp plate install the top of spring cup seat and with spring elastic fit, the one end of adjusting the pole is connected the spring clamp plate, the other end of adjusting the pole is the free end.
Preferably, the top of the spring pressure plate is provided with an inwards concave arc-shaped groove, and one end of the adjusting rod is of a structure matched with the arc-shaped groove.
Preferably, a plurality of pressure sensors and a first adjusting assembly and a second adjusting assembly matched with the plurality of pressure sensors are arranged on the periphery of the honeycomb plate sample.
Preferably, during zeroing, the difference between the maximum reading and the minimum reading of the plurality of pressure sensors is less than 1N;
the difference between the maximum reading and the minimum reading of the plurality of pressure sensors during the pressing of the honeycomb panel sample is less than 5N.
Preferably, a second supporting structure is arranged on the base, and the base is supported by the second supporting structure.
Preferably, the first support structure and the second support structure both adopt a rod frame structure.
Preferably, the bar frame structure is detachably connected.
Preferably, a thread structure is arranged on the second adjusting component.
Compared with the prior art, the invention has the following beneficial effects:
1. the honeycomb plate sample preparation device overcomes the defects that only one sample under the pressure state can be prepared, the sample preparation efficiency is low, and the equipment cost is high in the prior art, has a simple structure, is prepared by adopting conventional parts, is low in cost, is convenient to mount and dismount, can prepare honeycomb plate samples under various curing pressures in the same furnace by increasing the number of devices, has good universality, improves the utilization rate of curing equipment, saves the curing cost, and has high sample preparation efficiency.
2. The digital display pressure sensor is detachable, and can be used in a normal-temperature curing environment and a high-temperature curing environment.
3. The vacuum bag curing device can be used for pressurizing, heating and curing in an oven and also can be used for pressurizing and curing at normal temperature, so that the defect that the bonding performance of an adhesive is influenced due to the fact that a large amount of curing agents volatilize by adopting the vacuum bag in the prior art is overcome, the sample preparation efficiency is greatly improved, and the vacuum bag curing device is high in practicability.
4. According to the invention, when the pressure sensor is adjusted to zero, the deformation regulating part is arranged between the pressing plate and the honeycomb plate sample, and the deformation regulating part is removed after the zero adjustment is finished, so that a gap can be reserved between the honeycomb plate sample and the pressing plate according to the design pressure, and the accurate control of the sample preparation pressure of the honeycomb plate sample can be realized.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic front view of the present invention;
FIG. 3 is an enlarged schematic view of the portion I in FIG. 2;
FIG. 4 is a schematic top view of the structure of the present invention;
fig. 5 is a schematic side view of the present invention.
The figures show that:
Washer 3 spring 11
Hexagon socket head cap screw 12 in crossbeam 4
Spring cup holder 7 first accommodation space 15
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the concept of the invention. All falling within the scope of the present invention.
Example 1:
the invention provides a preparation device of a honeycomb plate sample for a satellite, which comprises a base 1, a first adjusting component, a second adjusting component, a pressing plate 6 and a pressure sensor 13, wherein a first supporting structure is arranged on the base 1, the pressing plate 6 is installed on the first supporting structure through the first adjusting component, a first accommodating space 15 is arranged between the pressing plate 6 and the base 1, the first accommodating space 15 is used for placing a honeycomb plate sample 14, the pressure sensor 13 is arranged along the circumferential direction of the honeycomb plate sample 14 and is arranged in the first accommodating space 15, the pressure sensor 13 preferably adopts a digital display pressure sensor, the accurate control of sample preparation pressure is realized by observing the reading of the digital display pressure sensor 13, the device can be applied to the environment of normal temperature curing and high temperature curing, the second adjusting component is installed on the base 1 and connected with the pressure sensor 13 for zero setting of the pressure sensor 13, when the zero setting of the pressure sensor 13 is carried out, a deformation adjusting component is installed between the pressing plate 6 and the honeycomb plate sample 14, the deformation adjusting component is removed after the zero setting is finished, preferably adopted by a plug gauge, the plug gauge is used for accurately preventing the deformation of the honeycomb plate sample from generating an error due to the design effect of the pressure sensor 13, and the plug gauge data of the pressure sensor 13.
Be provided with the helicitic texture on the second adjusting part, for example adopt hexagon socket head cap screw 12, realize pressure sensor 13's zero setting through rotatory hexagon socket head cap screw 12, simple structure adjusts the convenience. The first adjusting component can drive the pressing plate 6 to move towards or away from the base 1, and then the honeycomb plate sample 14 can be adjusted to a set pressure. In the zero setting process, the hexagon socket head cap screws 12 are fastened to drive the digital display pressure sensors 13 to move upwards until the digital display pressure sensors are in contact with the pressure plate 6, the sum of the readings of the digital display pressure sensors 13 is equal to the sum of the deadweights of the pressure plate 6, the spring cup base 7, the spring pressure plate 8 and the spring 11, the device reaches a zero position, and the feeler gauge is removed.
The base 1 is provided with a second supporting structure, and the base 1 is supported through the second supporting structure. The first supporting structure and the second supporting structure preferably adopt rod frame structures which are detachably connected.
Specifically, a plurality of pressure sensors 13 and a first adjusting assembly and a second adjusting assembly matched with the plurality of pressure sensors 13 are arranged on the periphery of the honeycomb plate sample 14, the number of the pressure sensors 13 is preferably 4, and in the zero setting process, the difference between the maximum reading and the minimum reading in the plurality of pressure sensors 13 is preferably less than 1N; the difference between the maximum reading and the minimum reading of the plurality of pressure sensors 13 during the pressing of the honeycomb panel sample 14 is preferably less than 5N. 6 four corners of clamp plate evenly set up pressure device and digital display pressure sensor 13, adjust pole 5 uniform adjustment through the four corners department and can make system appearance pressure more even, guarantee the quality of splicing of honeycomb panel sample 14.
Example 2:
this embodiment is a preferred embodiment of embodiment 1.
In this embodiment, as shown in fig. 1 to 5, the first supporting structure includes four supporting rods 2, four washers 3, two cross beams 4 and four hexagon nuts 10, the bottom end of the supporting rod 2 is preferably installed on the base 1 through a threaded structure, and the top end of the supporting rod 2 sequentially passes through the washers 3 and the cross beams 4 and is fastened through the hexagon nuts 10, so as to form two mutually symmetrical supporting frames arranged on two sides of the base 1.
In this embodiment, the second support structure adopts a bottom support rod 9, and the lower end of the bottom support rod 9 is a spherical surface.
In this embodiment, as shown in fig. 2 and 3, the first adjusting assembly includes an adjusting rod 5, a spring cup 7, a spring pressing plate 8 and a spring 11, the bottom end of the spring cup 7 is connected to the pressing plate 6, a second accommodating space 16 is provided inside the spring cup 7, the spring 11 is installed in the second accommodating space 16, the spring pressing plate 8 is installed at the top end of the spring cup 7 and elastically matched with the spring 11, one end of the adjusting rod 5 is connected to the spring pressing plate 8, and the other end of the adjusting rod 5 is a free end, wherein the adjusting rod 5 penetrates through the cross beam 4 and is in threaded fit with the cross beam 4, and the free end has a force application handle, so as to facilitate manual rotation operation, adjust pressure on the honeycomb panel sample 14, and the force application handle in the adjusting rod 5 penetrates through the adjusting rod 5 and can move along an opening at the adjusting rod 5, so as to control a force application arm of the adjusting rod 5. The spring pressing plate 8 is driven to move downwards through the fastening adjusting rod 5, the compression spring 11 enables the honeycomb panel sample 14 and the digital display pressure sensor 13 to bear vertical pressure, and the compression spring 11 can ensure that the pressing plate 6 flexibly applies pressure to the honeycomb panel sample 14, so that pressure mutation is avoided when the adjusting rod 5 is twisted.
In this embodiment, the adjustment rod 5 is loosened, the spring cup holder 7, the spring pressing plate 8, the spring 11, and the pressing plate 6 are removed, and the honeycomb panel sample 14 can be taken out.
Furthermore, the top of the spring pressing plate 8 is provided with an inwards concave arc-shaped groove, one end of the adjusting rod 5 is of a structure matched with the arc-shaped groove, and the shearing force generated in the pressing process of the device is reduced.
Example 3:
this embodiment is another preferable embodiment of embodiment 1.
In the embodiment, the pressed area of a honeycomb plate sample 14 is 0.02 square meter, the sample preparation pressure is 0.15MPa, when the readings of 4 digital display pressure sensors 13 are all 750N, the pressure of the device reaches the sample preparation pressure, the deformation of the stressed end is 0.1mm when the readings of the digital display pressure sensors 13 reach 750N through measurement, a 0.10 mm-0.12 mm clearance gauge is uniformly padded on the periphery of the upper surface of the honeycomb plate sample 14, and an upper pressure plate 6 is covered according to a preassembly state.
In this embodiment, the total of the deadweights of the pressure plate 6, the spring cup base 7, the spring pressure plate 8 and the spring 11 is 52N. The socket head cap screw 12 is slowly fastened to drive the digital display pressure sensor 13 to move upwards, and in order to ensure that four digital display pressure sensors 13 are uniformly pressed, the difference between the maximum reading and the minimum reading is less than 1N in the zero setting process of the device. When the four digital pressure sensors 13 read 13N, the device reaches zero position and the feeler is removed.
The fastening adjusting rod 5 drives the spring pressing plate 8 to move downwards, the spring 11 is compressed, the digital display pressure sensors 13 are stressed by vertical pressure, in order to guarantee uniform pressure application, the difference between the maximum reading and the minimum reading of the four digital display pressure sensors 13 is smaller than 5N in the pressure application process, and the reading of the four digital display pressure sensors 13 is 750N until 4 digital display pressure sensors 13 are used.
Slowly loosening the hexagon socket head cap screws 12 at the four corners, observing the reading of the digital display pressure sensor 13, ensuring that the difference between the maximum reading and the minimum reading is less than 10N until the reading of 4 digital display pressure sensors 13 is 0, and disassembling the digital display pressure sensor 13.
And after the sample is solidified, loosening the adjusting rod 5, disassembling the spring cup seat 7, the spring pressing plate 8, the spring 11 and the pressing plate 6, and taking out the sample.
In this example, the allowance of the reserved gap between the honeycomb plate sample 14 and the pressing plate 6 and the deformation of the sample are main sources of errors, a single digital display pressure sensor 13 is taken as an example for analysis, the maximum error of the reserved gap between the honeycomb plate sample 14 and the pressing plate 6 is 0.02mm, if the flat compression modulus of the honeycomb plate sample 14 is 150MPa, the height of the sample is 15mm, the deformation of the honeycomb plate sample 14 is 0.015mm, and the maximum error of the deformation of the spring 11 is 0.035mm, the stiffness coefficient of the spring 11 used in the device is 200N/mm, the maximum error is 7N, which is less than 1% of the design pressure, and the device can realize the accurate control of the sample preparation pressure of the honeycomb plate sample 14 for the satellite.
The sample preparation principle of the invention is as follows:
the device is preassembled firstly, the honeycomb plate sample 14 after assembly is placed on the base 1, the pressing plate 6 is used for preliminary compaction, the pressing plate 6 is required to be ensured to completely cover the honeycomb plate sample 14 and the digital display pressure sensor 13, before zero setting, a clearance is reserved between the honeycomb plate sample 14 and the pressing plate 6 by using the feeler gauge according to the deformation of the digital display pressure sensor 13 under the action of design pressure, in the zero setting process, the digital display pressure sensor 13 is driven to move upwards until contacting with the pressing plate 6 by fastening the hexagon socket head cap screw 12, and when the sum of the readings of the digital display pressure sensor 13 is equal to the sum of the dead weights of the pressing plate 6, the spring cup seat 7, the spring pressing plate 8 and the spring 11, the device reaches a zero position, and the feeler gauge is removed.
Further, after zero setting is finished, the adjusting rod 5 is twisted to apply pressure, the reading of the digital display pressure sensor 13 is observed at the same time, until the reading of the digital display pressure sensor 13 reaches the design pressure, the digital display pressure sensor 13 is removed through loosening the hexagon socket head cap screw 12, and the pressure is completely applied to the honeycomb plate sample 14, so that accurate pressure control is realized.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (9)
1. The device for preparing the cellular board sample for the satellite is characterized by comprising a base (1), a first adjusting component, a second adjusting component, a pressing plate (6) and a pressure sensor (13);
the honeycomb plate test bed is characterized in that a first supporting structure is arranged on the base (1), the pressure plate (6) is installed on the first supporting structure through a first adjusting assembly, a first accommodating space (15) is arranged between the pressure plate (6) and the base (1), the first accommodating space (15) is used for placing a honeycomb plate test sample (14), and the pressure sensors (13) are arranged along the circumferential direction of the honeycomb plate test sample (14) and are arranged in the first accommodating space (15);
the second adjusting component is arranged on the base (1) and connected with the pressure sensor (13) for zero setting of the pressure sensor (13);
the first adjusting assembly can drive the pressing plate (6) to move towards or away from the base (1) so as to adjust the honeycomb plate sample (14) to a set pressure;
and when the pressure sensor (13) is adjusted to zero, a deformation adjusting piece is arranged between the pressure plate (6) and the honeycomb plate sample (14), and the deformation adjusting piece is removed after the zero adjustment is finished.
2. The satellite honeycomb panel sample preparation apparatus according to claim 1, wherein the first adjusting assembly comprises an adjusting rod (5), a spring cup holder (7), a spring pressing plate (8) and a spring (11);
the bottom of spring cup seat (7) is connected clamp plate (6), the inside of spring cup seat (7) is provided with second accommodation space (16), install in second accommodation space (16) spring (11), install spring clamp plate (8) the top of spring cup seat (7) and with spring (11) elastic fit, the one end of adjusting pole (5) is connected spring clamp plate (8), the other end of adjusting pole (5) is the free end.
3. The satellite honeycomb plate sample preparation device according to claim 2, wherein the top of the spring pressing plate (8) is provided with an inward-concave arc-shaped groove, and one end of the adjusting rod (5) is of a structure matched with the arc-shaped groove.
4. The satellite honeycomb panel sample preparation device according to claim 1, wherein a plurality of pressure sensors (13) and first and second adjustment assemblies corresponding to the plurality of pressure sensors (13) are provided in the circumferential direction of the honeycomb panel sample (14).
5. The satellite honeycomb panel sample preparation apparatus according to claim 4, wherein the difference between the maximum reading and the minimum reading of the plurality of pressure sensors (13) is less than 1N during the zeroing;
the difference between the maximum and minimum readings of the plurality of pressure sensors (13) is less than 5N during the pressing of the honeycomb panel sample (14).
6. The satellite honeycomb panel sample preparation apparatus according to claim 1, wherein a second support structure is provided on the base (1) and the base (1) is supported by the second support structure.
7. The apparatus according to claim 6, wherein the first and second support structures are each a bar frame structure.
8. The apparatus of claim 7, wherein the frame structure is removably attached.
9. The satellite honeycomb panel sample preparation apparatus of claim 1, wherein the second adjustment assembly is provided with a threaded structure.
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| CN202110626614.0A CN113432942B (en) | 2021-06-04 | 2021-06-04 | Honeycomb panel sample preparation device for satellite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110626614.0A CN113432942B (en) | 2021-06-04 | 2021-06-04 | Honeycomb panel sample preparation device for satellite |
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| CN113432942A CN113432942A (en) | 2021-09-24 |
| CN113432942B true CN113432942B (en) | 2022-12-23 |
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| EP3351923A1 (en) * | 2017-01-20 | 2018-07-25 | Jeol Ltd. | Reduction in dew formation by preparing specimen for investigation |
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