A coaxiality testing device of a driving mechanism with convenient operation and a testing method thereof

Abstract

This invention discloses a convenient-to-operate coaxiality testing device for a drive mechanism, comprising: an annular connecting mechanism for stable and fixed assembly with the output shaft end face of the drive mechanism; an intermediate connecting member connected to the annular connecting mechanism for multi-angle adjustment of the annular connecting mechanism; a dial connecting block connecting the intermediate connecting member and a dial indicator; and a dial indicator whose pin is in contact with the output shaft of the drive mechanism. This invention features a simple structure, practical function, and can quickly and accurately measure the coaxiality of a drive mechanism. It boasts high assembly and adjustment efficiency, high flexibility, strong applicability, and low cost, and can be extended to other similar products.

Description

Technical Field

[0001] This invention relates to a coaxiality testing device and method, and more particularly to a convenient-to-operate coaxiality testing device and method for drive mechanisms. Background Technology

[0002] The drive mechanism is an essential key product in the spacecraft field, mainly used to drive the solar array for solar orientation and transmit the solar array's electrical power and signals to the spacecraft's interior. The assembly, adjustment, and testing of the drive mechanism's coaxiality directly affects the reliability of its quality and performance, and also directly impacts the spacecraft's on-orbit operation. Currently, during the assembly and adjustment of drive mechanisms in China, the coaxiality of the shaft system is measured using articulated arms, laser measuring instruments, optical measuring instruments, and coordinate measuring machines. These measuring instruments and equipment can achieve rapid and accurate measurement of the product's coaxiality, thus ensuring product quality and performance. However, these measurement methods mainly have the following problems: Firstly, the equipment is expensive and lacks flexibility. Articulated arms, laser measuring instruments, optical measuring instruments, and coordinate measuring machines, as high-precision geometric inspection equipment, generally have a high price threshold due to the combined effect of technology integration and performance costs. Moreover, their large size makes them inconvenient to operate. Secondly, the operating and maintenance costs are high. Articulated arms, laser measuring instruments, optical measuring instruments, and coordinate measuring machines require a high level of professional skill from the operators. At the same time, the core components of the equipment are difficult to maintain and costly. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of high price, low flexibility and high operation and maintenance costs of existing testing equipment.

[0004] To achieve the above-mentioned objectives, the present invention provides a conveniently operated coaxiality testing device for a drive mechanism, characterized in that it comprises: A ring-shaped connecting mechanism is used for stable and fixed assembly with the output shaft end face of the drive mechanism; An intermediate connector, connected to the annular connecting mechanism, is used for multi-angle adjustment of the annular connecting mechanism; Dial connecting block, wherein the dial connecting block is respectively connected to the intermediate connecting piece and the dial indicator: A dial indicator, wherein the dial indicator's pin is attached to the output shaft of the drive mechanism.

[0005] Preferably, the annular connecting mechanism has a large hole at its center and four small holes evenly distributed around its circumference; The large hole is a weight-reducing hole; The four small holes, evenly distributed around the circumference, are for mounting and fixing. The annular connecting mechanism is stably fixed to the end face of the output shaft of the drive mechanism by four screws.

[0006] Preferably, the intermediate connector adopts a flexible and adaptable waist-shaped hole annular connecting mechanism.

[0007] Preferably, the dial connecting block is mounted on the intermediate connecting member by a screw, and the other end is connected to a dial indicator.

[0008] Preferably, the dial indicator pin is attached to the coaxiality measuring surface of the drive mechanism, and the dial indicator dial displays the offset, so as to achieve the purpose of measuring the coaxiality of the drive mechanism.

[0009] The present invention also provides a testing method for a drive mechanism coaxiality testing device suitable for convenient operation, comprising the following steps: Step 1: The annular connecting mechanism first uses its four circumferentially evenly distributed mounting holes to accurately position and fasten the connection with the output shaft end face of the drive mechanism to form a stable detection benchmark. Step 2: Place the micrometer's pin smoothly against the surface to be measured on the drive mechanism to be tested, ensuring that the pin is perpendicular to the measuring surface and in close contact. Step 3: The output shaft of the drive mechanism drives the annular connecting mechanism and the micrometer to rotate synchronously. By observing the offset of the micrometer dial pointer, the radial deviation value can be read intuitively, and the coaxiality error between the measuring surfaces can be accurately determined.

[0010] Compared with the prior art, the beneficial effects of the present invention are: Highlight 1: The coaxiality testing device for aircraft drive mechanisms of the present invention has a simple structure and is easy to operate. It is especially suitable for coaxiality testing of small workpieces and has excellent portability. Highlight 2: The coaxiality testing device for aircraft drive mechanisms of the present invention is simpler and more intuitive to operate than traditional measurement methods, and can meet some basic coaxiality measurement requirements. Highlight 3: The coaxiality testing device of the present invention is applicable to the aircraft drive mechanism and has a certain degree of scalability. It can solve the measurement problem of parameters such as coaxiality of directional antenna products and has certain potential for economic benefits.

[0011] In summary, the entire measurement process is simple to operate and has extremely high assembly and adjustment efficiency. The entire process relies on a stable assembly datum and simple measuring tools, which ensures the reliability of the measurement results. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the drive mechanism coaxiality adjustment and testing system in a preferred embodiment of the present invention.

[0013] Figure 2This is a physical diagram of the drive mechanism coaxiality adjustment and testing system in a preferred embodiment of the present invention. Detailed Implementation

[0014] The following will combine Figure 1 The coaxiality testing device of the present invention applicable to drive mechanisms will be described in further detail.

[0015] This invention discloses a convenient-to-operate coaxiality testing device for a drive mechanism, comprising: A ring-shaped connecting mechanism is used for stable and fixed assembly with the output shaft end face of the drive mechanism; An intermediate connector, connected to the annular connecting mechanism, is used for multi-angle adjustment of the annular connecting mechanism; Dial connecting block, wherein the dial connecting block is respectively connected to the intermediate connecting piece and the dial indicator: A dial indicator, wherein the dial indicator's pin is attached to the output shaft of the drive mechanism.

[0016] According to one embodiment of the present invention, the annular connecting mechanism has a large hole at its center and four small holes evenly distributed around its circumference; The large hole is a weight-reducing hole; The four small holes, evenly distributed around the circumference, are for mounting and fixing. The annular connecting mechanism is stably fixed to the end face of the output shaft of the drive mechanism by four screws.

[0017] According to one embodiment of the present invention, the intermediate connector adopts a flexible and adaptable waist-shaped hole annular connecting mechanism.

[0018] According to one embodiment of the present invention, the dial connecting block is mounted on the intermediate connector by a screw, and the other end is connected to a dial indicator.

[0019] According to one embodiment of the present invention, the dial indicator pin is attached to the coaxiality measuring surface of the drive mechanism, and the dial indicator dial displays the offset, so as to achieve the purpose of measuring the coaxiality of the drive mechanism.

[0020] This invention also provides a testing method applicable to coaxiality testing, specifically designed for coaxiality testing of drive mechanisms.

[0021] First, the annular connection mechanism is accurately positioned and fastened to the end face of the output shaft through its four axially evenly distributed mounting holes to form a stable testing benchmark. Next, smoothly attach the micrometer's pin to the surface to be measured on the drive mechanism to be tested, ensuring that the pin is perpendicular to the measuring surface and in close contact. Finally, the output shaft of the drive mechanism drives the annular connecting mechanism and the micrometer to rotate synchronously. By observing the offset of the micrometer dial pointer, the radial deviation value can be read intuitively, and the coaxiality error between the measuring surfaces can be accurately determined.

[0022] This invention solves the problems of expensive testing equipment, low flexibility, and high operation and maintenance costs in the prior art. It can be used for coaxiality measurement of directional antenna products and has the advantages of high assembly and adjustment efficiency, high flexibility, strong applicability, and low cost.

[0023] It should be noted that the above description is merely illustrative and explanatory of the present invention. Those skilled in the art should understand that any modifications and substitutions to the present invention fall within the scope of protection of the present invention.

Claims

1. A convenient-to-operate coaxiality testing device for a drive mechanism, characterized in that, include: A ring-shaped connecting mechanism (4) is used for stable fixed assembly with the output shaft end face of the drive mechanism (5); The intermediate connector (3) is connected to the annular connecting mechanism and is used for multi-angle adjustment of the annular connecting mechanism; Dial connecting block (2), the dial connecting block is respectively connected to the intermediate connector and the dial indicator: Dial indicator (1), wherein the pin of the dial indicator is attached to the output shaft of the drive mechanism.

2. The convenient-to-operate coaxiality testing device for a drive mechanism as described in claim 1, characterized in that, The annular connecting mechanism has a large hole at its center and four small holes evenly distributed around its circumference. The large hole is a weight-reducing hole; The four small holes, evenly distributed around the circumference, are for mounting and fixing. The annular connecting mechanism is stably fixed to the end face of the output shaft of the drive mechanism by four screws.

3. The convenient-to-operate coaxiality testing device for a drive mechanism as described in claim 1, characterized in that, The intermediate connector adopts a flexible and adaptable waist-shaped hole annular connection mechanism.

4. The convenient-to-operate coaxiality testing device for a drive mechanism as described in claim 1, characterized in that, The dial connecting block is mounted on the intermediate connector by a screw, and the other end is connected to the dial indicator.

5. The convenient-to-operate coaxiality testing device for a drive mechanism as described in claim 1, characterized in that, The dial indicator pin is attached to the coaxiality measuring surface of the drive mechanism, and the dial indicator dial (7) displays the offset to achieve the purpose of measuring the coaxiality of the drive mechanism.

6. A test method for a conveniently operated drive mechanism coaxiality testing device as described in any one of claims 1-5, characterized in that, Including the following steps: Step 1: The annular connecting mechanism first uses its four circumferentially evenly distributed mounting holes to accurately position and fasten the connection with the output shaft end face of the drive mechanism to form a stable detection benchmark. Step 2: Place the micrometer pin (6) smoothly onto the surface to be measured of the drive mechanism to be tested, ensuring that the pin is perpendicular to the measuring surface and in close contact. Step 3: The output shaft of the drive mechanism drives the annular connecting mechanism and the micrometer to rotate synchronously. By observing the offset of the micrometer dial pointer, the radial deviation value can be read intuitively, and the coaxiality error between the measuring surfaces can be accurately determined.

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