阅读说明：本技术 一种立方星二维质心配平装置 (Cubic star two-dimensional centroid balancing device ) 是由 陆正亮 谈曾巧 钱鹏俊 胡远东 陶红海 于 2019-08-15 设计创作，主要内容包括：本发明公开了一种立方星二维质心配平装置,包括质量块安装板、四个粗调质量块和四个细调质量块,质量块安装板被经过中心点的横轴X轴和纵轴Y轴分为四个区域,每个区域内设置有一个空槽,四个空槽沿中心点对称布置,每两个相邻的空槽之间设置有一个导轨槽,四个导轨槽沿中心点对称布置,每个空槽的四周均匀分布有多个安装孔,粗调质量块的两侧分别设置有一个条形孔,细调质量块能够嵌入导轨槽并沿导轨槽轴向移动,细调质量块上贯穿设置有至少一个第一螺纹孔。本发明在不影响卫星总装测试、不改变卫星内部结构设计的前提下,利用安装在立方星顶部的二维质心调节模块可快速、精确地实现立方星二维质心的配平。(The invention discloses a cubic star two-dimensional mass center balancing device which comprises a mass block mounting plate, four coarse tuning mass blocks and four fine tuning mass blocks, wherein the mass block mounting plate is divided into four regions by a transverse axis X axis and a longitudinal axis Y axis which pass through a central point, each region is internally provided with a hollow groove, the four hollow grooves are symmetrically arranged along the central point, a guide rail groove is arranged between every two adjacent hollow grooves, the four guide rail grooves are symmetrically arranged along the central point, a plurality of mounting holes are uniformly distributed around each hollow groove, two sides of each coarse tuning mass block are respectively provided with a strip-shaped hole, the fine tuning mass blocks can be embedded into the guide rail grooves and axially move along the guide rail grooves, and the fine tuning mass blocks are provided with at least one first threaded. The invention can quickly and accurately realize the balancing of the two-dimensional centroid of the cube star by utilizing the two-dimensional centroid adjusting module arranged on the top of the cube star on the premise of not influencing the assembly test of the satellite and not changing the internal structure design of the satellite.)

1. A cubic star two-dimensional mass center balancing device is characterized by comprising a mass block mounting plate (1), four coarse adjusting mass blocks (2) and four fine adjusting mass blocks (3), the mass block mounting plate (1) is divided into four regions by a transverse axis X axis and a longitudinal axis Y axis passing through a central point, each region is internally provided with one empty groove (6), the four empty grooves (6) are symmetrically arranged along the central point, a guide rail groove (8) is arranged between every two adjacent empty grooves (6), the four guide rail grooves (8) are symmetrically arranged along the central point, a plurality of mounting holes (7) are uniformly distributed around each empty groove (6), two sides of the coarse adjusting mass block (2) are respectively provided with a strip-shaped hole (10), the fine adjusting mass block (3) can be embedded into the guide rail groove (8) and axially moves along the guide rail groove (8), at least one first threaded hole (14) penetrates through the fine adjusting mass block (3).

2. A cube two dimensional centroid balancing device according to claim 1 wherein said coarse proof mass (2) has a boss (12) at the bottom for engaging either side of said cavity (6).

3. A cuboidal two-dimensional centroid balancing device according to claim 2, characterized in that a U-shaped notch (11) is provided in one side of the coarse proof mass (2) on which no strip-shaped hole (10) is provided.

4. A cube star two-dimensional centroid balancing device according to claim 1, characterized in that two sides of the top of said fine adjusting mass (3) are each provided with a recess (13).

5. A cube star two-dimensional centroid balancing device according to claim 1, characterized in that two first threaded holes (14) are provided through said fine adjustment mass (3).

6. A device for balancing two-dimensional centroid of a cubic satellite as claimed in any one of claims 1 to 5, wherein said mass mounting plate (1) is provided with a 90 ° notch (4) at each of its four corners.

7. A cube two-dimensional centroid balancing device according to claim 6, characterized in that said mass mounting plate (1) is provided with two second threaded holes (5) on each of its four sides.

8. A trim arrangement according to claim 6, wherein the mass mounting plate (1) has a suspension hole (9) in its center, the suspension hole (9) having a circular through hole in its upper half and an inverted conical hole in its lower half.

Technical Field

The invention relates to the technical field of cuboids, in particular to a cuboids two-dimensional centroid balancing device.

Background

With the development of the industries of machinery, electronics and the like towards miniaturization and intellectualization, the cubic satellite has become one of the mainstream research directions in the spacecraft. The railway maneuvering capability of the existing cube satellite is relatively immature compared with the technical development of other platforms on the satellite, and the solid propulsion technology has the advantages of high density and impulse, small occupied volume in the satellite, simple structure, short working time, reliable performance and the like, so that the solid propulsion technology becomes a propulsion mode with obvious advantages in various propulsion system modes of the existing cube satellite railway maneuvering task, and has wide application prospect. In a solid propulsion system, the deviation of the mass center of a satellite causes the deviation of an inertia axis of the satellite and a longitudinal axis of a thruster, and the thrust eccentricity of the solid rocket thruster is inevitably caused. Due to the fact that the solid propulsion thrust is large, the thrust eccentric moment caused by the thrust eccentric moment easily causes the satellite attitude overturning to lose control.

The existing centroid balancing method is a counterweight method, for example, patent CN201110273085.7, in which the balancing of the centroid is realized by adding a counterweight, the method is complex to operate, and the mass of the mass is difficult to determine and adjust, so the centroid balancing difficulty is high, and the precision is low.

Disclosure of Invention

The invention aims to provide a cubic star two-dimensional centroid balancing device which is simple in structure and operation and high in precision.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a cube star two-dimensional centroid balancing device, includes quality piece mounting panel, four coarse adjusting quality pieces and four fine adjusting quality pieces, the quality piece mounting panel is divided into four regions by the cross axle X axle and the axis of ordinates Y axle through the central point, is provided with an dead slot in every region, and four dead slots are followed central point symmetrical arrangement is provided with a guide rail groove between per two adjacent dead slots, and four guide rail grooves are followed central point symmetrical arrangement, the evenly distributed all around of every dead slot have a plurality of mounting holes, the both sides of coarse adjusting quality piece are provided with a bar hole respectively, fine adjusting quality piece can imbed the guide rail groove is followed guide rail groove axial displacement, it is provided with at least one first screw hole to run through on the fine adjusting quality piece.

Furthermore, the bottom of the coarse tuning mass block is provided with a boss matched with two sides of the hollow groove.

Furthermore, a U-shaped notch is formed in one side edge of the coarse adjusting mass block, which is not provided with the strip-shaped hole.

Furthermore, two sides of the top of the fine adjustment mass block are respectively provided with a groove.

Furthermore, two first threaded holes are arranged on the fine adjustment mass block in a penetrating mode.

Furthermore, four corners of the mass block mounting plate are respectively provided with a 90-degree notch.

Furthermore, two second threaded holes are respectively formed in four side edges of the mass block mounting plate.

Furthermore, a hanging hole is formed in the center of the mass block mounting plate, the upper half portion of the hanging hole is a circular through hole, and the lower half portion of the hanging hole is an inverted conical hole.

Compared with the prior art, the invention has the following effects:

(1) the device for balancing the two-dimensional mass center of the cube star comprises four coarse adjustment mass blocks and four fine adjustment mass blocks which can be arranged on a mass block mounting plate, the number and the mounting position of the mass blocks which need to be used can be specifically selected according to the measured mass center offset during the balancing of the mass center of the cube star, and the difference design of the coarse adjustment mass blocks and the fine adjustment mass blocks ensures that the operating space for adjusting the mass center is large, the precision of the balancing of the mass center is improved, and the time required by the balancing process of the mass center of the cube star is greatly shortened;

(2) according to the invention, two sides of the coarse tuning mass block on the mass center adjusting module are respectively provided with a strip-shaped hole, one side edge without the strip-shaped hole is provided with a U-shaped notch, and the mounting position and the mass center adjustability of the coarse tuning mass block can be realized by adjusting the mounting positions of the strip-shaped holes and the mounting orientation of the U-shaped notch;

(3) the fine tuning mass block can be embedded into the guide rail groove and moves axially along the guide rail groove, and at least one first threaded hole penetrates through the fine tuning mass block, so that the fine tuning of the mass center can be realized by adjusting the position of the fine tuning mass block in the guide rail groove, and the fine tuning mass block can be positioned in the guide rail groove by penetrating through the first threaded hole by using a screw;

(4) the two-dimensional centroid balancing device of the cube star can be directly installed and fixed at the top of the cube star through the second threaded hole, so that the internal structural design of the satellite is not changed, the general assembly test of the satellite is not influenced, and the installation of the cube star in a standard separating mechanism is not influenced.

Drawings

FIG. 1 is a schematic structural diagram of a cuboidal star two-dimensional centroid balancing device of the present invention.

Fig. 2 is an exploded view of the cube-star two-dimensional centroid balancing apparatus of the present invention.

Fig. 3 is a schematic structural diagram of the mass mounting plate.

Fig. 4 is a schematic structural diagram of a coarse tuned mass.

Fig. 5 is a schematic structural diagram of the fine tuning mass.

Fig. 6 is a schematic view of a first mounting of a coarse proof mass.

Fig. 7 is a schematic diagram of a second installation of a coarse proof mass.

Fig. 8 is a schematic view of the installation of the fine tuning mass.

FIG. 9 is a schematic view of the suspended mounting of the central suspension hole of the mass mounting plate.

FIG. 10 is a schematic diagram of the installation and use of the cube-star two-dimensional centroid balancing apparatus of the present invention.

Detailed Description

The following describes the implementation of the present invention in detail with reference to specific embodiments.

As shown in fig. 1-5, a cubic star two-dimensional centroid balancing device comprises a mass block mounting plate 1, four coarse tuning mass blocks 2 and four fine tuning mass blocks 3, wherein the mass block mounting plate 1 is divided into four regions by a transverse axis X axis and a longitudinal axis Y axis passing through a central point, each region is provided with a hollow groove 6, the four hollow grooves 6 are symmetrically arranged along the central point, a guide rail groove 8 is arranged between every two adjacent hollow grooves 6, the four guide rail grooves 8 are symmetrically arranged along the central point and distributed in a cross shape, a groove is arranged in each guide rail groove 8 and used for limiting the fine tuning mass blocks 3, a plurality of mounting holes 7 are uniformly distributed around each hollow groove 6, the plurality of mounting holes 7 can realize position adjustment and mounting and positioning of the coarse tuning mass blocks 2, two sides of the coarse tuning mass blocks 2 are respectively provided with a strip-shaped hole 10, and screws are used for positioning on the mass block mounting plate, design bar hole 10's aim at ensures that coarse adjusting mass block 2 can both find the mounting hole in each position and fix a position the adjustment of being convenient for to realize the mounted position, and coarse adjusting mass block 2's upper surface flushes with the guide rail upper surface on the quality block mounting panel 1, fine adjusting mass block 3 can imbed guide rail groove 8 is followed guide rail groove 8 axial displacement, it is provided with two first screw holes 14 to run through on the fine adjusting mass block 3.

Referring to fig. 4, the bottom of the coarse adjusting mass block 2 has a boss 12 which is matched with two sides of the empty slot 6, and the boss 12 can be placed in the empty slot 6 at four corners of the mass block mounting plate 1, so as to increase the mass of the coarse adjusting mass block 2 and improve the capacity of adjusting the mass center of the coarse adjusting mass block, and a U-shaped notch 11 is formed on one side edge of the coarse adjusting mass block 2 which is not provided with the strip-shaped hole 10.

With reference to fig. 6 and 7, the coarse tuning mass block 2 has two mounting directions on the mass block mounting plate 1, and can be mounted in the manner of fig. 6 when the mass center of the cube star has large offset on the x axis, so that the coarse tuning mass block can be adjusted on the x axis, and can be mounted in the manner of fig. 7 when the mass center of the cube star has large offset on the y axis, so that the coarse tuning mass block 2 can be coarsely tuned on the mass center of the cube star in four directions, and the mass center adjusting capability of the two-dimensional mass center balancing module is improved.

With reference to fig. 5, two sides of the top of the fine adjustment mass block 3 are respectively provided with a groove 13, the shape of each groove 13 is just matched with the guide rail groove 8 on the mass block mounting plate 1, so that the fine adjustment mass block can only move along the axial direction of the guide rail, the upper surface of the bulge of the fine adjustment mass block 3 is flush with the upper surface of the guide rail groove 8, the installation and embedding modes of the fine adjustment mass block 3 and the guide rail groove 8 are shown in fig. 8, the fine adjustment mass block 3 is provided with two first threaded holes 14, the fine adjustment mass block is positioned on the mass block mounting plate 1 after being matched with a screw for determining the position of the fine adjustment mass block, and the screw is abutted against the bottom of the guide rail.

With reference to fig. 3, a 90-degree notch 4 is respectively formed in each of four corners of the mass block mounting plate 1, the notch 4 can be just positioned in cooperation with four guide rails of the outer frame of the cube star, and two second threaded holes 5 are respectively formed in four sides of the mass block mounting plate 1 and used for being matched with countersunk screws to fix the mass block mounting plate 1 to the top end of the cube star.

With reference to fig. 9, a hanging hole 9 is formed in the center of the mass block mounting plate 1, the upper half of the hanging hole 9 is a circular through hole, the lower half of the hanging hole 9 is an inverted cone-shaped hole, and the string 15 penetrates through the circular through hole and the cone-shaped platform body 16 and is fixed by a screw 17, so that the cube star provided with the two-dimensional centroid balancing module can be lifted.

With reference to fig. 10, the two-dimensional centroid adjusting module of the main body part of the cubic star two-dimensional centroid balancing device occupies a space of 100mm × 100mm × 5mm, and is mounted at the top end of a cubic star frame by utilizing eight countersunk head screws to match with eight threaded holes, the two-dimensional centroid balancing device is 5mm in total height, does not exceed a part extending out of a guide rail of an outer frame of the cubic star, does not change the overall envelope shape of the cubic star, does not influence the mounting of the cubic star in a separating mechanism, and can be mounted on 1 unit cubic star, 2 units cubic star and 3 units cubic star designed according to the international cubic star standard.

The invention discloses a mass center adjusting method of a cubic star two-dimensional mass center balancing device, which comprises the following steps of:

(1) combining different installation quantities and positions of the coarse tuning mass blocks 2, calculating the adjustable mass center range of each combination by using MATLAB, and establishing a table in which the installation quantities and positions of the coarse tuning mass blocks correspond to the adjustable mass center range;

(2) mounting the mass block mounting plate 1 at the top end of the cube star;

(3) determining the position of the centroid of the cube;

(4) according to the position of the cubic star mass center, a group of coarse tuning mass blocks 2 with adjustable mass center ranges closest to the position of the cubic star mass center can be found out in a table;

(5) mounting the coarse tuning mass block 2 at a corresponding position for coarse tuning of the cubic star mass center;

(6) the fine tuning mass 3 is used for accurate balancing of the center of mass. Example (c): if the centroid of the cube star deviates in the positive direction of the x axis, a fine adjustment mass block can be arranged in the guide rail in the negative direction of the x axis for adjustment, and the other directions are the same; if the centroid of the cube star deviates in the positive directions of the x axis and the y axis, fine adjusting mass blocks can be installed in the negative direction guide rails of the x axis and the y axis for adjustment, and the other conditions are the same.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.