A six-freedom platform with high positioning accuracy

Abstract

The utility model relates to the field of six-free platforms, and in particular to a six-free platform with high positioning accuracy. The utility model provides a six-free platform with high positioning accuracy that ensures that the movement of a support plate in six degrees of freedom can be accurately controlled to a preset position, avoiding deviations in the movement of the support plate. A six-free platform with high positioning accuracy includes a base plate, an electric cylinder, and a support plate, etc. A plurality of electric cylinders are rotatably connected to the upper side of the base plate, and support plates are rotatably connected between the electric cylinders. The utility model starts the motor to drive the moving roller to rotate, so that the sliding plate moves on the guide frame, drives the cylinder to move, moves the cylinder to a specified position, then starts the cylinder, and adjusts the positioning block to a specified height, thereby ensuring that the movement of the support plate in six degrees of freedom can be accurately controlled to a preset position, avoiding deviations in the movement of the support plate.

Description

Technical Field

[0001] The utility model relates to the field of six-freedom platforms, in particular to a six-freedom platform with high positioning accuracy. Background Art

[0002] The six-degree-of-freedom platform is a high-end mechatronic device that can simulate true full-range motion in a three-dimensional space, including three translational degrees of freedom (linear motion in the X, Y, and Z axes) and three rotational degrees of freedom (rotational motion around the X, Y, and Z axes, commonly known as roll, pitch, and yaw).

[0003] The existing six-freedom platform fixes six electric cylinders between the upper platform and the lower platform, so that the electric cylinders drive the upper platform to move in six degrees of freedom to simulate real omnidirectional motion. However, since the upper platform is only supported and controlled by the electric cylinders, when the bearings of the upper platform are worn or problems occur with the electric cylinders, the movement of the upper platform may deviate, affecting the reliability of the simulation.

[0004] Therefore, a six-degree-of-freedom platform with high positioning accuracy has been developed to ensure that the movement of the support plate in six degrees of freedom can be accurately controlled to a preset position to avoid deviation in the movement of the support plate. Utility Model Content

[0005] In order to overcome the shortcomings of the existing six-freedom platform, when the bearing of the upper platform is worn or the electric cylinder has problems, it may cause deviations in the movement of the upper platform and affect the reliability of the simulation, the utility model provides a six-freedom platform with high positioning accuracy that ensures that the movement of the support plate in six degrees of freedom can be accurately controlled to a preset position, avoiding deviations in the movement of the support plate.

[0006] The technical implementation scheme of the utility model is: a six-free platform with high positioning accuracy, including a base plate, an electric cylinder, a support plate and a clamping mechanism, a plurality of electric cylinders are rotatably connected to the upper side of the base plate, support plates are rotatably connected between the electric cylinders, and a clamping mechanism capable of clamping the support plates is provided on the base plate.

[0007] Optionally, the support plate is a hollow structure.

[0008] Optionally, the positioning mechanism includes a guide frame, a movable roller, a motor and a cylinder. The guide frame is connected to the base plate. Sliding plates are slidably connected to the upper and lower sides of the guide frame. Multiple movable rollers are rotatably connected between the sliding plates. The movable rollers are all in contact with the guide frame. A motor is connected to the upper left side of the upper sliding plate. The motor output shaft is connected to the left front movable roller. A cylinder is connected to the upper middle side of the upper sliding plate.

[0009] Optionally, the guide frame is a circular structure.

[0010] Optionally, a locking block is provided on the telescopic end of the cylinder.

[0011] Optionally, a fixing mechanism is also included, which includes a rotating fixing plate and an electric push rod. The rotating fixing plate is rotatably connected to the lower left side of the base plate, and the front and rear electric push rods are rotatably connected to the upper right side of the rotating fixing plate. The telescopic ends of the electric push rods are both rotatably connected to the base plate.

[0012] The beneficial effects of the utility model are as follows: 1. The utility model starts the motor to drive the moving roller to rotate, so that the sliding plate moves on the guide frame, drives the cylinder to move, moves the cylinder to a specified position, and then starts the cylinder to adjust the positioning block to a specified height, thereby ensuring that the movement of the support plate in six degrees of freedom can be accurately controlled to a preset position, thereby avoiding deviations in the movement of the support plate.

[0013] 2. The utility model starts the electric push rod to rotate the rotating fixed plate to the level with the foundation, so that the bottom plate always remains in a horizontal state, achieving the effect of being able to support the bottom plate to adapt to different simulation environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the clamping mechanism of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the fixing mechanism of the utility model.

[0018] In the above figures: 1_base plate, 2_electric cylinder, 3_support plate, 4_positioning mechanism, 40_guide frame, 41_moving roller, 42_motor, 43_cylinder, 5_fixing mechanism, 50_rotating fixing plate, 51_electric push rod. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0020] A six-freedom platform with high positioning accuracy, such as Figure 1 and Figure 2 As shown, it includes a base plate 1, an electric cylinder 2, a support plate 3 and a locking mechanism 4. Six electric cylinders 2 are rotatably connected to the upper side of the base plate 1, and support plates 3 are rotatably connected between the electric cylinders 2. The support plate 3 is a hollow structure to reduce the influence of inertia force and mass on the system. A locking mechanism 4 is provided on the base plate 1.

[0021] like Figure 1-Figure 3 As shown, the locking mechanism 4 includes a guide frame 40, a movable roller 41, a motor 42 and a cylinder 43. The guide frame 40 is connected to the base plate 1. The guide frame 40 is a circular structure for easy guiding. The guide frame 40 is slidably connected to sliding plates on the upper and lower sides. Three movable rollers 41 are rotatably connected between the sliding plates. The movable rollers 41 are all in contact with the guide frame 40. The motor 42 is connected to the upper left side of the upper sliding plate. The output shaft of the motor 42 is connected to the left front movable roller 41. The cylinder 43 is connected to the upper middle side of the upper sliding plate. A locking block is provided on the telescopic end of the cylinder 43.

[0022] When using the utility model, first fix the base plate 1 on a foundation or a bracket, and then fix the object to be tested on the support plate 3. After that, the computer control system accurately controls the telescopic length and speed of each electric cylinder 2 according to a preset motion trajectory or a real-time external signal, and then synchronously drives the support plate 3 to make corresponding movements in six degrees of freedom to simulate the omnidirectional movement of the object to be tested. When the support plate 3 is controlled to tilt at a certain angle, the motor 42 can be started to drive the moving roller 41 to rotate, so that the sliding plate moves on the guide frame 40, driving the cylinder 43 to move, so that the cylinder 43 moves to a specified position, and then the cylinder 43 is started, and the positioning block is adjusted to a specified height. When the support plate 3 is tilted at a certain angle, the support plate 3 is positioned by the positioning block, thereby ensuring that the movement of the support plate 3 in six degrees of freedom can be accurately controlled to a preset position, thereby avoiding deviation in the movement of the support plate 3.

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, it also includes a fixing mechanism 5, which includes a rotating fixing plate 50 and an electric push rod 51. The rotating fixing plate 50 is rotatably connected to the lower left side of the base plate 1, and the front and rear electric push rods 51 are rotatably connected to the upper right side of the rotating fixing plate 50. The telescopic ends of the electric push rods 51 are both rotatably connected to the base plate 1.

[0024] The fixing mechanism 5 of the device can be used to adapt to different test environments. When the foundation has a certain inclination, the electric push rod 51 can be started to rotate the rotating fixing plate 50 to be level with the foundation, so that the base plate 1 always remains in a horizontal state, thereby supporting the base plate 1 to adapt to different simulation environments.

[0025] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the utility model concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A six-freedom platform with high positioning accuracy, characterized by: The invention comprises a base plate (1), an electric cylinder (2), a support plate (3) and a locking mechanism (4); a plurality of electric cylinders (2) are rotatably connected to the upper side of the base plate (1); support plates (3) are rotatably connected between the electric cylinders (2); and a locking mechanism (4) capable of locking the support plates (3) is provided on the base plate (1).

2. A six-freedom platform with high positioning accuracy according to claim 1, characterized in that: The support plate (3) is a hollow structure.

3. A six-freedom platform with high positioning accuracy according to claim 1, characterized in that: The positioning mechanism (4) comprises a guide frame (40), a movable roller (41), a motor (42) and a cylinder (43). The guide frame (40) is connected to the bottom plate (1). The upper and lower sides of the guide frame (40) are both slidably connected to sliding sheets. A plurality of movable rollers (41) are rotatably connected between the sliding sheets. The movable rollers (41) are all in contact with the guide frame (40). The upper left side of the upper sliding sheet is connected to the motor (42). The output shaft of the motor (42) is connected to the left front movable roller (41). The upper middle side of the upper sliding sheet is connected to the cylinder (43).

4. A six-freedom platform with high positioning accuracy according to claim 3, characterized in that: The guide frame (40) is a circular structure.

5. A six-freedom platform with high positioning accuracy according to claim 3, characterized in that: The cylinder (43) is also provided with a locking block on its telescopic end.

6. A six-freedom platform with high positioning accuracy according to claim 3, characterized in that: The invention also comprises a fixing mechanism (5), the fixing mechanism (5) comprising a rotating fixing plate (50) and an electric push rod (51), the rotating fixing plate (50) being rotatably connected to the lower left side of the base plate (1), the front and rear electric push rods (51) being rotatably connected to the upper right side of the rotating fixing plate (50), and the telescopic ends of the electric push rods (51) being rotatably connected to the base plate (1).

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