CN114353788A - Glue filling method for inertia measuring device - Google Patents
Glue filling method for inertia measuring device Download PDFInfo
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- CN114353788A CN114353788A CN202111532253.XA CN202111532253A CN114353788A CN 114353788 A CN114353788 A CN 114353788A CN 202111532253 A CN202111532253 A CN 202111532253A CN 114353788 A CN114353788 A CN 114353788A
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- glue
- glue filling
- pouring
- inertia
- rear cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
- G01C21/166—Mechanical, construction or arrangement details of inertial navigation systems
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- Radar, Positioning & Navigation (AREA)
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- Automation & Control Theory (AREA)
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Abstract
The invention relates to the technical field of inertial navigation preparation, in particular to a glue filling method for an inertial measurement unit, which comprises the steps of processing a glue filling port and an air outlet hole on a rear cover of an inertial navigation system, filling glue through the glue filling port, and completing glue filling through repeated glue filling and vacuum; after glue pouring and curing, the influence of external environmental conditions on the components can be reduced, the components are ensured to run well under a standard working environment, and the normal stability and the service life of the components are improved. The assembly glue filling process improves the structural strength of the inertia system and obtains good performance in actual use tests.
Description
Technical Field
The invention relates to the technical field of inertial navigation preparation, in particular to a glue filling method for an inertial measurement unit.
Background
An inertial navigation system (INS, hereinafter, referred to as an inertial navigation system) is an autonomous navigation system that does not depend on external information and does not radiate energy to the outside. The working environment of the device not only comprises the air and the ground, but also can be underwater. The basic working principle of the inertial navigation system is based on Newton's law of mechanics, and by measuring the acceleration of a carrier in an inertial reference system, integrating the acceleration with time and transforming the acceleration into a navigation coordinate system, information such as speed, yaw angle and position in the navigation coordinate system can be obtained.
In order to realize normal and stable work of the inertial navigation system in a high-overload and high-dynamic environment, the inertial navigation system needs to be filled with glue, the influence of external environmental conditions on components can be reduced after the components are solidified by a filling and sealing process, the components are ensured to run well in a standard working environment, and the normal stability and the service life of the components are improved. The pouring sealant has the advantages of insulation, moisture resistance, dust prevention, mould prevention, shock prevention, electric leakage prevention, corona prevention, corrosion prevention, salt mist prevention, acid and alkali prevention, vulcanization prevention, aging prevention, high and low temperature impact resistance, high and high humidity and temperature resistance, flame retardance and other environmental protection performances.
Therefore, it is necessary to provide a glue filling system for an inertial measurement unit.
Disclosure of Invention
The invention aims to provide an assembly glue filling method for an inertia measuring device, which provides a reliable glue filling process for the inertia measuring device and improves the yield of the inertia measuring device.
The technical scheme for realizing the purpose is as follows:
a glue pouring method for an inertia measurement device comprises the following steps:
s1, installing a control assembly, a battery assembly and a measuring assembly into the main body;
s2, screwing a rear cover on the main body to ensure that the inner surface of the rear cover is tightly attached to the end face of the bottom end of the main body;
s3, drawing two cross lines on one bus on the rear cover, respectively machining two holes with the intersection of the two cross lines as the center, wherein one hole is used as a glue filling port, and the other hole is used as an air outlet;
s4, horizontally placing the glue pouring opening of the inertia measuring device with the glue pouring opening facing upwards;
s5, pouring glue into the inertia measuring device through the glue pouring port, stopping pouring the glue when the glue is poured to the height of the electronic cabin 2/3, and putting the inertia measuring device into a vacuum box for vacuumizing;
s6, taking the inertia measurement device out of the vacuum box, and building a glue wall around the glue filling hole by using hot melt glue;
s7, continuously pouring the glue from the glue pouring hole until the glue pouring port and the air outlet overflow;
s8, putting the inertia measurement device into a vacuum box for vacuumizing, and taking out the inertia measurement device when no air bubbles exist;
s9, horizontally placing the inertia measurement device with the glue filling opening facing upwards, and standing until the glue is solidified;
and S10, cleaning the glue overflowing from the glue filling port, and completing the glue filling of the inertia measuring device.
Further, the center spacing of the two cross wires is 5 mm.
Further, in step S2, to ensure that the rear cover is completely screwed, the rear cover is screwed down and then unscrewed, and then screwed down again, which is repeated at least 3 times, and each time the rear cover is unscrewed, the air gun is used to clean the chips at the screw thread.
Further, the tightening operation adopts a tool.
Further, the glue filling port is cleaned and dried before glue filling.
Further, the glue filling in steps S6 and S8 is slow glue filling, and the glue filling process is appropriately shaken.
The invention has the beneficial effects that:
the invention provides an assembly glue filling method of an inertia measuring device, the assembly glue filling process is characterized in that a glue filling port and an air outlet are arranged on the inertia measuring device, glue is filled into the inertia measuring device through the glue filling port, and smoothness in the glue filling process is ensured through the air outlet; the glue filling, the vacuumizing, the glue filling and the vacuumizing are sequentially performed, so that the stability of the glue filling quality is ensured; after glue pouring and curing, the influence of external environmental conditions on the components can be reduced, the components are ensured to run well under a standard working environment, and the normal stability and the service life of the components are improved. The assembly glue filling process improves the structural strength of the inertia system and obtains good performance in actual use tests.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
FIG. 1 is a schematic view of an inertial measurement unit according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an inertial measurement unit;
FIG. 3 is a schematic view of the rear cover;
FIG. 4 is a schematic view of the inertial measurement unit being horizontally disposed;
fig. 5 is an internal view of the inertial measurement unit.
In the figure, 1, main body; 2. a rear cover; 3. pouring a glue opening; 4. an air outlet; 5. an electronic compartment; 6. an energy cabin; 7. a copper pillar; 8. and (5) gluing the wall.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below, obviously, the described embodiments are only a part of the embodiments of the present application, but not all embodiments, and the description is only for further explaining the features and advantages of the present invention, and not for limiting the claims of the present invention; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "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 particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 3, an assembly glue filling method for an inertial measurement unit according to a preferred embodiment of the present invention includes the following steps:
s1, installing a control assembly, a battery assembly and a measuring assembly into the main body 1;
s2, drawing a first scribing line at the position of the shell of the main body 1 corresponding to the center of the electronic cabin 5; screwing the rear cover 2 on the main body 1, unscrewing the rear cover 2, then screwing again, repeating the operation for at least 3 times, cleaning chips at the thread position by using an air gun after unscrewing the rear cover 2 each time, ensuring that the inner surface of the rear cover 2 is tightly attached to the end face of the bottom end of the main body 1, and drawing a second scribing line on the side face of the rear cover 2 corresponding to the first scribing line; wherein, the tightening operation adopts a tool;
s3, drawing two cross lines on the second scribing line, wherein the cross lines are spaced by 5 mm; two holes are respectively processed by taking the intersection of the two cross lines as the center, one hole is used as a glue pouring port 3, and the other hole is used as an air outlet 4;
s4, cleaning the glue filling port 3 and airing;
s5, horizontally placing the glue pouring port 3 of the inertia measuring device with the upward surface, as shown in FIG. 4;
s6, stopping pouring the glue into the inertia measuring device through the glue pouring port 3 when the glue reaches the height of the electronic cabin 52/3, and putting the inertia measuring device into a vacuum box for vacuumizing;
s7, taking the inertia measurement device out of the vacuum box, and building a glue wall 8 around the glue filling hole by using hot melt glue;
s8, continuing to pour glue from the glue pouring hole until the glue pouring port 3 and the air outlet 4 overflow;
s9, putting the product into a vacuum box for vacuumizing, and taking out the product when no bubbles exist;
s10, horizontally placing the inertia measuring device with the glue filling port 3 facing upwards, and standing until the glue is solidified;
and S11, cleaning the glue overflowing from the glue filling port 3.
It should be noted that, as shown in fig. 5, an electronic cabin 5 and an energy cabin 6 are arranged in the inertial measurement device, a control component and a measurement component are arranged in the electronic cabin 5, and a battery component is arranged in the energy cabin 5; in the figure, a sensor corresponding copper column 7 is also arranged in the electronic cabin 5.
It can be understood that the glue filling port 3 and the air outlet 4 both penetrate through the outer wall of the inertia measurement device and are communicated with the cavity of the main body 1.
Preferably, the glue filling opening 3 is communicated with the energy cabin 6.
In some embodiments of the present application, the glue expands during the curing process, and the glue filling is stopped when the glue is filled to the height of the electronic compartment 2/3, so as to avoid the overflow of the glue after the first glue filling and curing. And after the primary glue pouring, building a glue wall around the glue pouring hole to ensure that the subsequent glue pouring can be smoother. And cleaning the glue material of the glue filling port and the air outlet after the last glue filling and curing to finish the glue filling.
The inertia measurement device shown in fig. 1 is subjected to glue filling by using the glue filling process described in the above embodiment, and the expected glue filling amount is 350 g; five groups of glue filling experiments are carried out, the glue filling amount is respectively 348 g, 353 g, 349 g, 347 g and 351 g, and the final test results of all products meet the requirements.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A glue pouring method for an inertia measurement device is characterized by comprising the following steps:
s1, installing a control assembly, a battery assembly and a measuring assembly into the main body;
s2, screwing a rear cover on the main body to ensure that the inner surface of the rear cover is tightly attached to the end face of the bottom end of the main body;
s3, drawing two cross lines on one bus on the rear cover, respectively machining two holes with the intersection of the two cross lines as the center, wherein one hole is used as a glue filling port, and the other hole is used as an air outlet;
s4, horizontally placing the glue pouring opening of the inertia measuring device with the glue pouring opening facing upwards;
s5, pouring glue into the inertia measuring device through the glue pouring port, stopping pouring the glue when the glue is poured to the height of the electronic cabin 2/3, and putting the inertia measuring device into a vacuum box for vacuumizing;
s6, taking the inertia measurement device out of the vacuum box, and building a glue wall around the glue filling hole by using hot melt glue;
s7, continuously pouring the glue from the glue pouring hole until the glue pouring port and the air outlet overflow;
s8, putting the inertia measurement device into a vacuum box for vacuumizing, and taking out the inertia measurement device when no air bubbles exist;
s9, horizontally placing the inertia measurement device with the glue filling opening facing upwards, and standing until the glue is solidified;
and S10, cleaning the glue overflowing from the glue filling port, and completing the glue filling of the inertia measuring device.
2. The glue filling method for the inertial measurement unit according to claim 1, characterized in that: the center interval of the two cross lines is 5 mm.
3. The glue filling method for the inertial measurement unit according to claim 1, characterized in that: in step S2, to ensure that the rear cover is completely screwed, the rear cover is screwed down and then screwed down again, and this is repeated at least 3 times, and the air gun is used to clean up the chips at the thread after the rear cover is screwed down each time.
4. A glue filling method for an inertial measurement unit according to claim 1 or 3, characterized in that: the tightening operation adopts a tool.
5. The glue filling method for the inertial measurement unit according to claim 1, characterized in that: and the glue filling port is cleaned and dried before glue filling.
6. The glue filling method for the inertial measurement unit according to claim 1, characterized in that: the glue filling in the steps S6 and S8 is slow glue filling, and the glue filling process is properly shaken.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111532253.XA CN114353788A (en) | 2021-12-15 | 2021-12-15 | Glue filling method for inertia measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111532253.XA CN114353788A (en) | 2021-12-15 | 2021-12-15 | Glue filling method for inertia measuring device |
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| Publication Number | Publication Date |
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| CN114353788A true CN114353788A (en) | 2022-04-15 |
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| CN202111532253.XA Pending CN114353788A (en) | 2021-12-15 | 2021-12-15 | Glue filling method for inertia measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718986A (en) * | 2022-04-26 | 2022-07-08 | 中国电子科技集团公司第二十六研究所 | Full-suspension vibration isolation and isolation method and structure for electronic equipment |
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2021
- 2021-12-15 CN CN202111532253.XA patent/CN114353788A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718986A (en) * | 2022-04-26 | 2022-07-08 | 中国电子科技集团公司第二十六研究所 | Full-suspension vibration isolation and isolation method and structure for electronic equipment |
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