A high-precision positioning and adjustment device
A closed-loop control system consisting of high-precision adjustment components, testing equipment, and a controller is used to achieve micron- and nanometer-level part positioning accuracy by utilizing piezoelectric screws and a coordinate measuring machine. This solves the problem of high-precision positioning adjustment in existing technologies and improves the efficiency and accuracy of positioning adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNITED OPTICAL TECH (BEIJING) CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-06-30
AI Technical Summary
Existing positioning and adjustment fixtures cannot meet the high-precision positioning requirements at the micron and nanometer levels. In particular, when microcrystalline glass is bonded to a specific area of the workpiece, the error cannot meet the precision requirements of ultra-precision instruments.
A closed-loop control system is constructed using high-precision adjustment components, testing equipment, and controllers. High-precision positioning and adjustment of the target part is achieved using piezoelectric screws and a coordinate measuring machine. Automatic adjustment is performed in conjunction with a host computer, and the positioning process is optimized through PID or neural network algorithms.
It achieves micron- and nanometer-level part positioning accuracy, reduces operational difficulty and workload for staff, and improves the efficiency of positioning adjustment.
Smart Images
Figure CN224425391U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical component assembly technology, specifically to a high-precision positioning and adjustment device. Background Technology
[0002] In the field of precision optics, to achieve complex optical performance or integrate multiple functions, it is often necessary to bond microcrystalline glass to specific areas of a workpiece to achieve specific functions. To ensure the reliability of the finished workpiece, extremely high precision is required for the bonding position. Typically, to ensure that features (such as gaps) on the target part can quickly align with fitting features (such as filler blocks) on the target workpiece, the size of the feature (fitting feature) is usually designed to be slightly larger than the size of the fitting feature (feature). This error becomes even more pronounced when multiple pairs of features and fitting features exist, in order to ensure one-to-one alignment. However, this error is unacceptable for some ultra-precision instruments (micrometer and nanometer level precision). Even if the feature and fitting feature appear aligned to the naked eye, further adjustments are still required. However, existing positioning and adjustment fixtures cannot achieve such high-precision positioning requirements. Therefore, a high-precision positioning and adjustment device is needed to achieve micrometer and nanometer level positioning accuracy. Utility Model Content
[0003] The purpose of this application is to provide a high-precision positioning and adjustment device to achieve high-precision part positioning and adjustment.
[0004] To achieve the above objectives, this application provides a high-precision positioning and adjustment device. The high-precision positioning and adjustment device includes an adjusting component for adjusting the position of a target part on a target workpiece, an adjusting bracket for fixing the adjusting component, and a detection device for detecting the position of the target part. The adjusting bracket includes a rectangular frame and a support plate. The support plate is connected to the rectangular frame and supports the rectangular frame, ensuring that the frame surface of the rectangular frame is parallel to the horizontal plane. The height of the support plate is adapted to the target workpiece. The adjusting component is fixedly connected to the frame edge of the rectangular frame. The adjusting component is a telescopic structure, and the telescopic direction of the adjusting component is parallel or perpendicular to the horizontal plane. The telescopic end of the adjusting component is used to abut against the target part.
[0005] In this embodiment, the high-precision positioning adjustment device further includes a controller and a power supply. The adjustment component includes two piezoelectric screws and a connecting plate that connects the two piezoelectric screws in parallel. The two piezoelectric screws are connected to the frame of the rectangular frame through the connecting plate. The telescopic ends of the two piezoelectric screws face the same direction. The two piezoelectric screws are respectively connected to the controller, and the controller and the piezoelectric screws are respectively connected to the power supply. The controller is used to control the start, stop, and telescopic movement of the piezoelectric screws.
[0006] In this embodiment of the application, the detection device is a coordinate measuring machine (CMM), the probe of the CMM is positioned close to the target part, and the CMM is used to acquire the position data of the target part.
[0007] In this embodiment of the application, a host computer is also included. The detection device and the controller are respectively connected to the host computer. The host computer is used to receive the position data of the target part fed back by the coordinate measuring machine, and is also used to generate control commands based on the position data or receive control commands from the user. The controller is used to control the piezoelectric screw to perform corresponding extension and retraction operations according to the control commands.
[0008] In this embodiment of the application, the high-precision positioning and adjustment device further includes a push plate, which is fixedly connected to the target workpiece, and the drive shaft of the piezoelectric screw abuts against the push plate.
[0009] In this embodiment, the adjusting bracket further includes a trapezoidal extension plate, and the two opposite edges of the rectangular frame are respectively connected to the trapezoidal extension plate. The trapezoidal extension plate has a handle hole, and the support plate is connected to the trapezoidal extension plate.
[0010] In this embodiment of the application, the high-precision positioning and adjustment device further includes a liftable bottom support base, which is used to support the target workpiece.
[0011] In this embodiment of the application, the support plate includes an L-shaped main plate and a reinforcing plate. The L-shaped main plate includes horizontal and vertical plates that are connected to each other and perpendicular to each other. The cross-section of the reinforcing plate is a right-angled triangle. The two side walls containing the two right-angled sides of the right-angled triangle are respectively connected to the horizontal and vertical plates.
[0012] The solution provided in this application has at least the following beneficial effects:
[0013] The solution provided in this application cleverly designs the position and connection relationship between the adjusting component and the target part (target workpiece) based on high-precision adjusting components, high-precision detection equipment, and a high-precision adjusting bracket, achieving high-precision (micron- and nanometer-level precision) part positioning adjustment. Furthermore, the adjusting component, detection equipment, controller, and host computer can also form a closed-loop control system capable of automatically adjusting the position of the target part (the control algorithm can adopt PID, neural network, etc.). This can reduce the operational difficulty and workload of high-precision part positioning adjustment, and improve the efficiency of part positioning adjustment.
[0014] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:
[0016] Figure 1 The diagram schematically illustrates the connection between the adjusting bracket and the adjusting member in an embodiment of this application;
[0017] Figure 2 This schematic diagram illustrates the positional relationship between the adjusting member and the target workpiece in an embodiment of this application.
[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;
[0019] Figure 4 The schematic diagram shows a top view of the connection between the adjusting bracket and the adjusting component in an embodiment of this application;
[0020] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;
[0021] Figure 6 The schematic diagram illustrates the structure of the adjustment bracket in an embodiment of this application.
[0022] Explanation of reference numerals in the attached figures
[0023] 1. Rectangular frame; 2. Support plate; 21. L-shaped main plate; 22. Reinforcing plate; 3. Piezoelectric screw; 4. Connecting plate; 5. Push plate; 6. Trapezoidal extension plate; 7. Handle hole; 100. Target part; 200. Target workpiece. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0025] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0026] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0027] Example
[0028] This embodiment provides a high-precision positioning and adjustment device, such as... Figure 1 and Figure 2 As shown, the high-precision positioning and adjustment device includes an adjusting component for adjusting the position of the target part 100 on the target workpiece 200, an adjusting bracket for fixing the adjusting component, and a detection device for detecting the position of the target part 100. The adjusting bracket includes a rectangular frame 1 and a support plate 2. The support plate 2 is connected to the rectangular frame 1 and is used to support the rectangular frame 1 and make the frame surface of the rectangular frame 1 parallel to the horizontal plane. The height of the support plate 2 is adapted to the target workpiece 200. The adjusting component is fixedly connected to the frame of the rectangular frame 1. The adjusting component is a telescopic structure. The telescopic direction of the adjusting component is parallel or perpendicular to the horizontal plane (in this embodiment, the telescopic direction of the adjusting component is parallel to the horizontal plane as an example). The telescopic end of the adjusting component is used to (directly or indirectly) abut against the target part 100.
[0029] For example, such as Figure 4 and Figure 5As shown, in this embodiment, the (superior arc) bow-shaped target part 100 is used as an example. Although some of the fitting features on the target workpiece 200 have been adapted to the features on the target part 100 (the nut has been inserted into the groove on the target part 100) from the naked eye, the concave hole at the top of the target part 100 and the corresponding cylinder may not be aligned. Therefore, the position of the target part 100 needs to be finely adjusted to meet the accuracy requirements (for example, making the chord of the concave hole parallel to the horizontal direction). For example, the adjusting component includes two piezoelectric screws 3 and a connecting plate 4 connecting the two piezoelectric screws 3 in parallel, with the telescopic ends of the two piezoelectric screws 3 facing the same direction; the two piezoelectric screws 3 are respectively connected to a controller, and the controller and the piezoelectric screws 3 are respectively connected to a power source (here, the power source refers to all the power required by the system; the voltage required by the controller is not the same as the voltage required by the piezoelectric screws 3, and this does not mean that they must be connected to the same power source; of course, they can also be connected to the same power source (such as AC power) by connecting a corresponding power adapter); the controller is used to control the start, stop, and telescopic movement of the piezoelectric screws 3, and multiple adjusting components can be connected to the rectangular frame 1 at the same time, and the controller can control multiple piezoelectric screws 3 at the same time. Furthermore, since the surface of the target part 100 may be uneven, that is, the contact surface between the target part 100 and the two piezoelectric screws 3 may be curved, this will increase the difficulty of adjustment. Therefore, the high-precision positioning and adjusting device in this embodiment also includes a high-precision push plate 5, which is fixedly connected to the target workpiece 200. The drive shaft of the piezoelectric screw 3 abuts against the push plate 5, such as... Figure 3 As shown, the two piezoelectric screws 3 are made to abut against the same plane to reduce measurement and calculation steps and reduce errors.
[0030] Furthermore, in this embodiment of the application, the detection device is a coordinate measuring machine (CMM). The CMM's probe is positioned close to the target part 100. The CMM is used to acquire the position data of the target part 100 (for example, acquiring the position data of three points on the target part 100 to determine the orientation and placement of the target part 100) and the position data of a reference object (such as the side of the target workpiece 200 or the cylinder corresponding to the concave hole on the top of the target part 100).
[0031] In this embodiment of the application, a host computer is also included. The detection device and the controller are respectively connected to the host computer. The host computer is used to receive the position data of the target part 100 fed back by the coordinate measuring machine, and is also used to generate control commands or receive control commands from the user based on the position data. The controller is used to control the piezoelectric screw 3 to perform corresponding extension and retraction operations according to the control commands. The data or position adjustment process can be visualized based on the host computer.
[0032] The host computer can calculate the current distance between the target part 100 and the reference object in real time based on the position data of the target part 100 and the position data of the reference object, and determine whether the target part 100 has reached the expected position by comparing the real-time distance with the pre-approved reference distance (range).
[0033] The method of using the adjusting component provided in this embodiment is as follows: First, the features on the target part 100 are initially aligned and adapted with the matching features on the target workpiece 200; then, the target part 100 and the piezoelectric screws 3 are adjusted so that the push plate 5 abuts against the two piezoelectric screws 3 of the adjusting component; the position data of the target part 100 and the position data of the reference object are measured using a coordinate measuring machine, and the desired distance between the target part 100 and the reference object is set; the host computer calculates the current distance between the target part 100 and the reference object, and determines whether the target part 100 has reached the desired position. If it has not reached the desired position, the difference between the target part 100 and the desired position is calculated, and the piezoelectric screws 3 that need to be activated are determined based on the difference, and the action plan is planned (this step can also be done manually), generating a control command and sending it to the controller; the controller controls the corresponding piezoelectric screws 3 to perform the corresponding operation according to the control command (which includes information such as the distance and speed of the output shaft). Specifically, for example... Figure 5 Taking the (curved) target part 100 as an example, when the piezoelectric screw 3 on the right pushes the target part 100, since the top (chord side) of the target part 100 is fixed, the target part 100 will rotate slightly clockwise (moving towards the desired position) due to uneven force. If rotation in the opposite direction is required, the piezoelectric screw 3 on the left can be driven forward, while the piezoelectric screw 3 on the right can be driven to retract slightly. Based on the above process, high-precision adjustment of the position of the target part 100 can be achieved.
[0034] Based on the aforementioned adjustment components, detection equipment, controller, and host computer, a closed-loop control system capable of automatically adjusting the position of the target part 100 can be constructed (the control algorithm can adopt PID, neural network, etc.). This can reduce the operational difficulty of high-precision part positioning adjustment and the workload of the staff, and improve the efficiency of part positioning adjustment.
[0035] like Figure 6 As shown in this embodiment, the adjusting bracket further includes a trapezoidal extension plate 6. The two opposite edges of the rectangular frame 1 are respectively connected to the trapezoidal extension plate 6. The trapezoidal extension plate 6 can be integrally connected with the rectangular frame 1 to improve the overall stability and reliability of the adjusting bracket. The trapezoidal extension plate 6 is provided with a handle hole 7 to facilitate the movement of the adjusting bracket by operators or machinery. The support plate 2 is connected to the trapezoidal extension plate 6.
[0036] Furthermore, to accommodate workpieces of different heights, the high-precision positioning and adjustment device also includes a liftable bottom support base, which is used to support the target workpiece 200.
[0037] Furthermore, such as Figure 6 As shown, in this embodiment, the support plate 2 includes an L-shaped main plate 21 and a reinforcing plate 22. The L-shaped main plate 21 includes horizontal and vertical plates that are connected to each other and perpendicular to each other. The cross-section of the reinforcing plate 22 is a right-angled triangle, and the two sidewalls containing the two right-angled sides of the right-angled triangle are connected to the horizontal and vertical plates, respectively. The support plate 2 with this structure can improve the overall stability of the adjustment bracket.
[0038] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0039] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A high-precision positioning and adjustment device, characterized in that, The high-precision positioning and adjustment device includes an adjustment component for adjusting the position of a target part (100) on a target workpiece (200), an adjustment bracket for fixing the adjustment component, and a detection device for detecting the position of the target part (100). The adjustment bracket includes a rectangular frame (1) and a support plate (2). The support plate (2) is connected to the rectangular frame (1) and is used to support the rectangular frame (1) and make the frame surface of the rectangular frame (1) parallel to the horizontal plane. The height of the support plate (2) is adapted to the target workpiece (200). The adjusting member is fixedly connected to the frame of the rectangular frame (1). The adjusting member is a telescopic structure. The telescopic direction of the adjusting member is parallel or perpendicular to the horizontal plane. The telescopic end of the adjusting member is used to abut against the target part (100).
2. The high-precision positioning and adjustment device according to claim 1, characterized in that, The high-precision positioning adjustment device also includes a controller and a power supply. The adjustment component includes two piezoelectric screws (3) and a connecting plate (4) that connects the two piezoelectric screws (3) in parallel. The two piezoelectric screws (3) are connected to the frame of the rectangular frame (1) through the connecting plate (4). Among them, the telescopic ends of the two piezoelectric screws (3) are oriented in the same direction; Two piezoelectric screws (3) are connected to a controller, and the controller and the piezoelectric screws (3) are connected to a power source. The controller is used to control the start, stop and extension / retraction of the piezoelectric screws (3).
3. The high-precision positioning and adjustment device according to claim 2, characterized in that, The detection device is a coordinate measuring machine (CMM). The CMM's probe is positioned close to the target part (100). The CMM is used to acquire the position data of the target part (100).
4. The high-precision positioning and adjustment device according to claim 3, characterized in that, It also includes a host computer, and the detection device and the controller are respectively connected to the host computer. The host computer is used to receive the position data of the target part (100) fed back by the coordinate measuring machine, and is also used to generate control commands or receive control commands from the user based on the position data. The controller is used to control the piezoelectric screw (3) to perform corresponding extension and retraction operations according to the control instructions.
5. The high-precision positioning and adjustment device according to claim 2, characterized in that, The high-precision positioning and adjustment device also includes a push plate (5), which is fixedly connected to the target workpiece (200), and the drive shaft of the piezoelectric screw (3) abuts against the push plate (5).
6. The high-precision positioning and adjustment device according to claim 1, characterized in that, The adjustment bracket also includes a trapezoidal extension plate (6), and the two opposite sides of the rectangular frame (1) are respectively connected to the trapezoidal extension plate (6). The trapezoidal extension plate (6) has a handle hole (7), and the support plate (2) is connected to the trapezoidal extension plate (6).
7. The high-precision positioning and adjustment device according to claim 1, characterized in that, The high-precision positioning and adjustment device also includes a liftable bottom support base, which is used to support the target workpiece (200).
8. The high-precision positioning and adjustment device according to claim 1, characterized in that, The support plate (2) includes an L-shaped main plate (21) and a reinforcing plate (22). The L-shaped main plate (21) includes a horizontal plate and a vertical plate that are connected to each other and perpendicular to each other. The cross section of the reinforcing plate (22) is a right triangle. The two side walls of the right triangle are connected to the horizontal plate and the vertical plate, respectively.