A displacement stage mechanism and displacement system

Abstract

The utility model relates to electric displacement table technical field provides a displacement table mechanism and displacement system, the displacement table mechanism includes: base, mobile base, motor, first photoelectric sensor, second photoelectric sensor, photoelectric cutting board, first fixed arm, second fixed arm and screw rod, one side of base set up motor, the other side sets up first photoelectric sensor, second photoelectric sensor, and first photoelectric sensor and second photoelectric sensor between leave distance, the screw rod is located on the axis of motor, and the screw rod is connected with the rotor of motor, mobile base can be slidably arranged on base, the bottom surface of mobile base is installed with photoelectric cutting board, one end of mobile base sets up first fixed arm, and the other end sets up second fixed arm, first fixed arm and second fixed arm are fixedly connected with both ends of screw rod respectively, the utility model can realize the displacement of high precision and high stability.

Description

Technical Field

[0001] This utility model relates to the field of electric displacement stage technology, and in particular to a displacement stage mechanism and displacement system. Background Technology

[0002] In laboratory research and industrial production, electric displacement stages are frequently used to move parts. The accuracy and stability of the displacement stage are crucial for the smooth progress of experiments and production.

[0003] Existing displacement stages mostly use gear racks or trapezoidal lead screws for transmission, and the power source is placed at both ends, resulting in mechanical backlash and force skew, which leads to insufficient overall accuracy and stability.

[0004] Therefore, designing a displacement stage mechanism that is high-precision, highly stable, simple in structure, easy to assemble, and low in cost is of great practical significance. Utility Model Content

[0005] This invention addresses the technical problem that existing displacement stages often use gear racks or trapezoidal lead screws for transmission, with the power source placed at both ends, resulting in mechanical backlash and force misalignment, leading to insufficient overall accuracy and stability. The invention proposes a displacement stage mechanism and displacement system to achieve high-precision and high-stability component displacement.

[0006] This utility model provides a displacement stage mechanism, including: a base, a movable base, a motor, a first photoelectric sensor, a second photoelectric sensor, a photoelectric cutting plate, a first fixed arm, a second fixed arm, and a lead screw; A motor is installed on one side of the base, and a first photoelectric sensor and a second photoelectric sensor are installed on the other side; a distance is left between the first photoelectric sensor and the second photoelectric sensor; the lead screw is located on the axis of the motor, and the lead screw is threadedly connected to the rotor of the motor; The movable base is slidably mounted on the base; a photoelectric cutting plate is installed on the bottom surface of the movable base; The movable base is provided with a first fixed arm at one end and a second fixed arm at the other end; the first fixed arm and the second fixed arm are respectively fixedly connected to the two ends of the lead screw.

[0007] Preferably, a guide rail is provided on the base; the guide rail is parallel to the lead screw; A slider is mounted on the bottom surface of the movable base, and the slider is slidably mounted on the guide rail.

[0008] Preferably, the movable base has multiple threaded fixing holes.

[0009] Preferably, motor mounting brackets are provided at both ends of the motor; the motor mounting brackets are fixedly connected to the base.

[0010] Preferably, a backlash-eliminating nut is provided at one end of the motor, and the backlash-eliminating nut is fitted onto the lead screw.

[0011] Preferably, the motor is a through-shaft motor.

[0012] Correspondingly, this utility model also provides a displacement system, including: two or more displacement stage mechanisms provided in any embodiment of this utility model; Two or more displacement stage mechanisms are mounted together by at least one connector.

[0013] The displacement stage mechanism and displacement system provided by this utility model have the following advantages compared with the prior art: 1. The displacement stage mechanism of this utility model has a simple structure, few components, convenient assembly and installation, low cost, and high precision and stability. Using a through-shaft motor as the power source, it drives a lead screw for linear feed, converting the motor's rotational motion into linear feed. This causes the first and second fixed arms to move in tandem, thereby driving the moving base and slider to move smoothly along the guide rail. Optical elements are mounted on the moving base, enabling high-precision displacement. Through photoelectric sensors and a drive photoelectric cutter, electric control is achieved, ensuring precise movement of the moving platform, saving costs, and improving the overall performance and stability of the optical instrument.

[0014] 2. The displacement stage mechanism of this utility model can be equipped with optical elements of different functions through the optical element holder, so as to realize different functions and be suitable for the displacement of optical elements in different occasions and environments.

[0015] 3. A backlash-eliminating nut is installed at one end of the motor, and the backlash-eliminating nut is fitted onto the lead screw. The backlash-eliminating nut can eliminate the gap between the motor and the lead screw, thereby improving the overall accuracy and stability of the displacement table. 4. By combining two or more displacement stage mechanisms, a displacement system can be formed to achieve position driving in different directional situations. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the displacement stage mechanism provided by this utility model; Figure 2 This is an exploded view of the displacement stage mechanism provided by this utility model; Figure 3 This is a schematic diagram of the displacement stage mechanism provided by this utility model at the first preset work position; Figure 4 This is a schematic diagram of the displacement stage mechanism provided by this utility model at the second preset work position; Figure 5 This is an exploded view of the two-dimensional displacement system provided by this utility model; Figure 6 This is a schematic diagram of the three-dimensional displacement system provided by this utility model; Figure 7 This is an exploded view of the three-dimensional displacement system provided by this utility model.

[0017] Reference numerals in the attached drawings: 1. Base; 2. Movable base; 3. Guide rail; 4. Motor; 5. Motor mounting bracket; 6. First photoelectric sensor; 7. Second photoelectric sensor; 8. Photoelectric cutting plate; 9. First fixed arm; 10. Second fixed arm; 11. Lead screw; 12. Slider; 13. Connector. Detailed Implementation

[0018] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0019] Example 1 like Figure 1-2 As shown in the figure, the displacement stage mechanism provided in this utility model embodiment includes: a base 1, a movable base 2, a motor 4, a first photoelectric sensor 6, a second photoelectric sensor 7, a photoelectric cutting plate 8, a first fixed arm 9, a second fixed arm 10, and a lead screw 11.

[0020] A motor 4 is mounted on one side of the base 1, and a first photoelectric sensor 6 and a second photoelectric sensor 7 are mounted on the other side; a distance is maintained between the first photoelectric sensor 6 and the second photoelectric sensor 7; the lead screw 11 is located on the axis of the motor 4, and the lead screw 11 is threadedly connected to the rotor of the motor 4. Specifically, the motor 4 is a through-shaft motor, allowing the lead screw 11 to pass through the motor 4 and be threadedly connected to the rotor of the motor 4. Motor mounting seats 5 are respectively provided at both ends of the motor 4; the motor mounting seats 5 are fixedly connected to the base 1.

[0021] The movable base 2 is slidably mounted on the base 1; a photoelectric cutting plate 8 is installed on the bottom surface of the movable base 2; specifically, a guide rail 3 is provided on the base 1, preferably a precision-grade high-rigidity pre-loaded guide rail, to achieve overall operational stability and avoid vibration and shaking during operation. The guide rail 3 is parallel to the lead screw 11; a slider 12 is installed on the bottom surface of the movable base 2, and the slider 12 is slidably mounted on the guide rail 3. The slider 12 and the movable base 2 can slide on the guide rail 3. The motor 4 is located in the middle position on one side of the base 1, so that the power source is as close as possible to the guide rail 3 and the slider 12, avoiding skewed load during operation.

[0022] The movable base 2 is provided with a first fixed arm 9 at one end and a second fixed arm 10 at the other end; the first fixed arm 9 and the second fixed arm 10 are respectively fixedly connected to the two ends of the lead screw 11.

[0023] The movable base 2 has multiple threaded fixing holes for installing and adjusting different optical element holders, which can realize the mounting of optical elements with different functions to adapt to the displacement of optical elements in different occasions and environments.

[0024] In addition, a backlash-eliminating nut is provided at one end of the motor 4, and the backlash-eliminating nut is fitted onto the lead screw 11. The backlash-eliminating nut can eliminate the gap between the motor 4 and the lead screw 11, thereby improving the overall accuracy and stability of the displacement table.

[0025] During the assembly process, it is necessary to ensure that the motor 4 and the guide rail 3 are parallel to each other to prevent them from twisting and deforming, so as to achieve the target accuracy.

[0026] The working principle of this utility model is as follows: Motor 4 serves as the power source, driving lead screw 11 for linear feed. Lead screw 11 is threadedly connected to the rotor of motor 4. The rotational motion of motor 4 is converted into linear feed of lead screw 11, driving the first fixed arm 9 and the second fixed arm 10 to move in tandem, thereby causing the movable base 2 and slider 12 to move smoothly along guide rail 3. The movable base 2 drives the photoelectric cutting plate 8 on its bottom surface to move synchronously; when the photoelectric cutting plate 8 reaches the first preset work position (e.g., ... Figure 3 As shown), this will trigger the first sensor 6 installed at that location to send a positioning signal; it will then continue running to the second preset station (as shown). Figure 4 When the signal is triggered (as shown), the second sensor 7 will be activated, thus completing a full bidirectional positioning movement.

[0027] Example 2 This utility model also provides a displacement system, comprising: two or more displacement stage mechanisms provided in any embodiment of this utility model. The two or more displacement stage mechanisms are mounted together by at least one connector 13.

[0028] The displacement stage mechanism of this invention can serve as a basic motion module. A multi-degree-of-freedom system can be constructed by integrating two or more displacement stage mechanisms: two one-dimensional displacement stage mechanisms can be orthogonally assembled via a high-rigidity cross-axis connector 13 to form a two-dimensional displacement system with bidirectional XY translational capabilities (e.g., ...). Figure 5 As shown); based on this, by adding a third-axis displacement stage mechanism through multiple connecting parts 13, it can be expanded into a three-dimensional displacement system with XYZ three-degree-of-freedom motion capability (such as...). Figure 6-7(As shown). The mounting topology between the motion axes supports both orthogonal and non-orthogonal configurations: the orthogonal layout can achieve complete decoupling of motion in each axis, while the non-orthogonal configuration is suitable for trajectory planning under special working conditions.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A displacement stage mechanism, characterized in that, include: Base (1), movable base (2), motor (4), first photoelectric sensor (6), second photoelectric sensor (7), photoelectric cutting plate (8), first fixed arm (9), second fixed arm (10) and lead screw (11); A motor (4) is provided on one side of the base (1), and a first photoelectric sensor (6) and a second photoelectric sensor (7) are provided on the other side; and there is a distance between the first photoelectric sensor (6) and the second photoelectric sensor (7); the lead screw (11) is located on the axis of the motor (4), and the lead screw (11) is threadedly connected to the rotor of the motor (4); The movable base (2) is slidably mounted on the base (1); the bottom surface of the movable base (2) is equipped with a photoelectric cutting plate (8). The movable base (2) is provided with a first fixed arm (9) at one end and a second fixed arm (10) at the other end; the first fixed arm (9) and the second fixed arm (10) are respectively fixedly connected to the two ends of the lead screw (11).

2. The displacement stage mechanism according to claim 1, characterized in that, The base (1) is provided with a guide rail (3); the guide rail (3) is parallel to the lead screw (11); A slider (12) is mounted on the bottom surface of the movable base (2), and the slider (12) is slidably mounted on the guide rail (3).

3. The displacement stage mechanism according to claim 1 or 2, characterized in that, The movable base (2) has multiple threaded fixing holes.

4. The displacement stage mechanism according to claim 1, characterized in that, Motor mounting bases (5) are provided at both ends of the motor (4); the motor mounting bases (5) are fixedly connected to the base (1).

5. The displacement stage mechanism according to claim 1 or 4, characterized in that, A backlash-eliminating nut is provided at one end of the motor (4), and the backlash-eliminating nut is fitted onto the lead screw (11).

6. The displacement stage mechanism according to claim 1, characterized in that, The motor (4) is a through-shaft motor.

7. A displacement system, characterized in that, include: The displacement stage mechanism according to any one of claims 1 to 6; Two or more displacement stage mechanisms are mounted together by at least one connector (13).

Images