Parallel rotary table of optical measurement equipment

Abstract

The utility model relates to the technical field of optical measurement equipment, in particular to a parallel type rotary table of optical measurement equipment, which comprises a circular base, a plurality of rotating mechanisms, a plurality of rotating shafts and a plurality of rotating shafts, the bottom ends of the multiple crank connecting rods are rotationally connected with the multiple rotating mechanisms correspondingly; and the periphery of the lens cone is rotatably connected with the top ends of the plurality of crank connecting rods. According to the parallel type rotary table of the optical measurement equipment provided by the embodiment of the utility model, the plurality of rotating mechanisms are matched with one another, and the lens cone is driven to realize three-dimensional pure rotating motion through torsion of the plurality of crank connecting rods, so that the parallel type rotary table of the optical measurement equipment has excellent motion continuity; therefore, the tracking precision and stability of the optical measurement equipment can be improved.

Description

Technical Field

[0001] This utility model relates to the field of optical measurement equipment technology, and in particular to a parallel turntable for optical measurement equipment. Background Technology

[0002] Optical measurement equipment is a crucial tool for space target detection, early warning monitoring, advanced weapon testing, and astronomical observation, representing a nation's technological development level and comprehensive strength in optical engineering. The servo turntable is a key component of optical measurement equipment, and its design directly affects the system's tracking accuracy. Currently, common turntable types include azimuth-pitch and XY types. While these two types of dual-axis turntables have simple structures, they suffer from tracking blind spots and error accumulation. In contrast, parallel mechanisms have become a research hotspot due to their high precision and lack of error accumulation. Turntables represented by Stewart's six-degree-of-freedom parallel mechanism have been widely used in optical measurement equipment, but they suffer from strong motion coupling, limited rotation range, and complex structure. Therefore, researching turntables with large workspace, no tracking blind spots, no error accumulation, and simple structure is essential for achieving high-precision tracking control of optical measurement equipment. Utility Model Content

[0003] The purpose of this invention is to provide a parallel turntable for optical measurement equipment to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a parallel turntable for optical measuring equipment, comprising:

[0005] A circular base, the top of which is connected to multiple rotating mechanisms;

[0006] Multiple crank connecting rods, the bottom ends of which are rotatably connected to the multiple rotating mechanisms respectively;

[0007] The lens barrel is rotatably connected to the top of the plurality of crank connecting rods on its outer periphery.

[0008] Preferably, the plurality of rotating mechanisms includes three rotating mechanisms, each of which includes:

[0009] A drive motor is provided, the output end of which is fixedly connected to a transmission gear. A transmission gear ring is provided on the outer periphery of the circular base, and the transmission gear meshes with the transmission gear ring for transmission.

[0010] A sliding connector, which is fixedly connected to the drive motor;

[0011] The first rotating joint is fixedly connected to the sliding connector and is rotatably connected to the bottom end of the crank connecting rod.

[0012] Preferably, the top of the circular base is provided with an annular guide rail, and the sliding connector is slidably connected to the annular guide rail.

[0013] Preferably, three second rotating joints are fixedly connected to the outer periphery of the lens barrel, and the second rotating joints are rotatably connected to the top end of the crank connecting rod.

[0014] Preferably, the circular base, the transmission gear ring, and the annular guide rail are arranged coaxially, and the center of the lens barrel is located on this axis.

[0015] Preferably, the axes of the three first revolute joints, the axes of the three second revolute joints, and the axis of the lens barrel intersect at a point.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The parallel turntable of the optical measuring equipment provided by this utility model adopts a coaxial parallel design method. Through three rotating mechanisms, the transmission gear meshes with the transmission gear ring, thereby driving the sliding connector to slide on the annular guide rail. Then, through the first rotating joint, the crank connecting rod and the second rotating joint, the lens barrel is driven to achieve three-dimensional pure rotational motion. The rotation range of the lens barrel can reach -180° to +180° in the azimuth direction and -30° to +30° in the pitch direction. Compared with the azimuth-pitch type turntable and XY type turntable of the optical measuring equipment in the prior art, the parallel turntable of the optical measuring equipment provided by this invention has excellent motion continuity and motion response, and has the advantages of no blind spot and no error accumulation. Compared with the Stewart six-degree-of-freedom parallel turntable of the optical measuring equipment in the prior art, the parallel turntable of the optical measuring equipment provided by this invention has the advantages of large working space and simple structure. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a parallel turntable for an optical measuring device provided for an embodiment of this utility model.

[0019] In the diagram: 1. Circular base; 2. Crank connecting rod; 3. Lens tube; 4. Drive motor; 5. Transmission gear; 6. Actuating gear ring; 7. Sliding connector; 8. First rotating pair; 9. Annular guide rail; 10. Second rotating pair. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Figure 1 A schematic diagram of the parallel turntable of the optical measuring equipment provided for an embodiment of this utility model. (See attached diagram.) Figure 1 As shown, an embodiment of this utility model provides a parallel turntable for optical measuring equipment, which may include:

[0022] A circular base 1, with multiple rotating mechanisms connected to the top of the circular base 1;

[0023] Multiple crank connecting rods 2, the bottom ends of which are rotatably connected to multiple rotating mechanisms respectively;

[0024] The lens barrel 3 is rotatably connected to the top of multiple crank connecting rods 2 on its outer periphery.

[0025] The parallel turntable of the optical measuring equipment provided by this utility model uses multiple rotating mechanisms to cooperate with each other. The rotation of multiple crank connecting rods 2 drives the lens barrel 3 to achieve three-dimensional pure rotational motion. The parallel turntable of this optical measuring equipment has excellent motion continuity, thereby improving the tracking accuracy and stability of the optical measuring equipment.

[0026] Specifically, in one specific embodiment of this utility model, such as Figure 1 As shown, the parallel turntable of this optical measuring equipment includes three rotating mechanisms, which may include:

[0027] A drive motor 4 is provided, and a transmission gear 5 is fixedly connected to the output end of the drive motor 4. A transmission gear ring 6 is provided on the outer periphery of the circular base 1. The transmission gear 5 meshes with the transmission gear ring 6 for transmission.

[0028] Sliding connector 7 is fixedly connected to drive motor 4;

[0029] The first rotating joint 8 is fixedly connected to the sliding connector 7 and is rotatably connected to the bottom end of the crank connecting rod 2.

[0030] Furthermore, the top of the circular base 1 of the parallel turntable of the optical measuring equipment is provided with an annular guide rail 9, and the sliding connector 7 is slidably connected to the annular guide rail 9.

[0031] Furthermore, the outer periphery of the mirror tube 3 of the parallel turntable of the optical measuring equipment is fixedly connected with three second rotating pairs 10, which are rotatably connected to the top end of the crank connecting rod 2.

[0032] The parallel turntable of this optical measuring equipment drives the transmission gear 5 and transmission ring gear 6 through the drive motors 4 of three rotating mechanisms. This drives the sliding connector 7 to slide on the annular guide rail 9, and then drives the lens barrel 3 to achieve three-dimensional pure rotational motion through the first rotating joint 8, the crank connecting rod 2, and the second rotating joint 10. The rotation range of the lens barrel 3 can reach -180° to +180° in the azimuth direction and -30° to +30° in the pitch direction. It should be noted that during the rotation of the lens barrel 3, the drive motors 4 of the three rotating mechanisms have multiple rotation states, including clockwise rotation, counterclockwise rotation, and no rotation. Under the control of the background software program, the drive motors 4 of the three rotating mechanisms achieve the torsion of the three crank connecting rods 2 in different azimuths through the cooperation of various rotation states and rotation angles, so that the lens barrel 3 can obtain the target attitude in three-dimensional rotational space.

[0033] In one specific embodiment of this utility model, the circular base 1, transmission gear ring 6 and annular guide rail 9 of the parallel turntable of the optical measuring equipment are arranged coaxially, the center of the lens barrel 3 is located on the axis, and the axes of the three first rotating joints 8, the axes of the three second rotating joints 10 and the axis of the lens barrel 3 intersect at a point.

[0034] Through the above technical solution, the parallel turntable of the optical measurement equipment adopts a coaxial parallel design method, which reduces the stagnation, stuttering and inertial effects during the rotation of the lens tube 3, and has excellent motion continuity and motion response. Compared with the azimuth-pitch type turntable and XY type turntable of the optical measurement equipment in the prior art, the parallel turntable of the optical measurement equipment provided by the present invention has excellent motion continuity and has the advantages of no blind spot and no error accumulation. Compared with the Stewart six-degree-of-freedom parallel turntable of the optical measurement equipment in the prior art, the parallel turntable of the optical measurement equipment provided by the present invention has the advantages of large working space and simple structure.

[0035] In practical applications, the working principle of the parallel turntable of the optical measuring equipment provided by this utility model is as follows:

[0036] During operation, the parallel turntable of this optical measuring equipment drives the transmission gear 5 and transmission gear ring 6 through the drive motor 4 of three rotating mechanisms. This drives the sliding connector 7 to slide on the annular guide rail 9, and then drives the lens barrel 3 to achieve three-dimensional pure rotational motion through the first rotating pair 8, the crank connecting rod 2 and the second rotating pair 10. The rotation range of the lens barrel 3 can reach -180° to +180° in the azimuth direction and -30° to +30° in the pitch direction. Under the control of the background software program, the drive motor 4 of the three rotating mechanisms achieves the torsion of the three crank connecting rods 2 in different azimuth directions through the cooperation of various rotation states and rotation angles, so that the lens barrel 3 can obtain the target posture in the three-dimensional rotation space. The coaxial parallel design method reduces the stagnation, stuttering and inertial effects during the rotation of the lens barrel 3, and has excellent motion continuity and motion response, thereby improving the tracking accuracy and stability of the optical measuring equipment.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A parallel stage of an optical measuring apparatus, characterized in that, Include: The top of the circular base (1) is connected with a plurality of rotating mechanism; A plurality of crank connecting rod (2), the bottom end of the plurality of crank connecting rod (2) is respectively connected with the rotating mechanism rotatingly; The outer periphery of the lens barrel (3) is connected with the top end of the plurality of crank connecting rod (2).

2. The parallel stage of an optical measuring apparatus according to claim 1, characterized in that The plurality of rotating mechanism includes three rotating mechanism, the rotating mechanism includes: The output end of the driving motor (4) is fixedly connected with the transmission gear (5), the outer periphery of the circular base (1) is provided with transmission gear ring (6), the transmission gear (5) and the transmission gear ring (6) are engaged transmission; The sliding connector (7) is fixedly connected on the driving motor (4); The first rotating pair (8) is fixedly connected on the sliding connector (7), the first rotating pair (8) is connected with the bottom end of the crank connecting rod (2) rotatingly.

3. Parallel stage of an optical measuring apparatus according to claim 2, characterized in that The top of the circular base (1) is provided with annular guide rail (9), the sliding connector (7) is connected with the annular guide rail (9) slidingly.

4. Parallel stage of an optical measuring apparatus according to claim 3, characterized in that The outer periphery of the lens barrel (3) is fixedly connected with three second rotating pair (10), the second rotating pair (10) is connected with the top end of the crank connecting rod (2) rotatingly.

5. Parallel stage of an optical measuring apparatus according to claim 4, characterized in that The circular base (1), the transmission gear ring (6) and the annular guide rail (9) are coaxially arranged, the center of the lens barrel (3) is located on the axis.

6. Parallel stage of an optical measuring apparatus according to claim 5, characterized in that The axis of the three first rotating pair (8), the axis of the three second rotating pair (10) and the axis of the lens barrel (3) intersect at a point.

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