A mover suction test bench

Abstract

The application relates to a linear motor moving element test device, in particular to a moving element suction force test table. The moving element suction force test table comprises a workbench, two parallel sliding rails are arranged on the workbench, a mounting frame is slidably connected to the sliding rails, a mounting plate is arranged on the mounting frame, a moving element is arranged on the lower surface of the mounting plate, and a pressure sensor for detecting the vertical downward force of the moving element under the action of the stator suction force is arranged between the mounting plate and the mounting frame. The operator can conveniently detect the suction force between the moving element and the stator.

Description

Technical Field

[0001] This application relates to testing equipment for the mover of a linear motor, specifically a mover suction force testing platform. Background Technology

[0002] Detecting the suction force of the linear motor's mover is a crucial step in ensuring system performance and reliability, as the suction force directly affects the mover's thrust output and motion stability. By detecting suction force fluctuations (e.g., force fluctuation coefficient ≤ 5%), electromagnetic parameters can be optimized to ensure a dynamic response time ≤ 50ms, meeting the requirements of high-speed and high-precision scenarios.

[0003] Excessive suction can cause deformation of the guide rails or stator. Mechanical strength must be verified through a static load test at 10 times the rated thrust, with a deformation ≤0.05mm¹. During long-term operation, changes in suction may indicate mechanical wear or assembly deviations.

[0004] Abnormal suction can increase iron loss and eddy current loss, affecting energy conversion efficiency (typically 85-92% for linear motors). Detecting suction distribution helps optimize heat dissipation design and avoid excessive temperature rise (not exceeding the upper limit of insulation material class 1 during 4 hours of continuous operation).

[0005] Abnormal suction characteristic frequencies (e.g., 123Hz-135Hz1) can provide early warning of guide rail installation problems. Combined with thrust calibration every 2000 hours1, predictive maintenance can be achieved, extending equipment life.

[0006] We need a device that allows operators to easily detect the suction force of the mover of a linear motor. Summary of the Invention

[0007] Therefore, it is necessary to provide a moving element attraction test stand to address the problems of existing technologies.

[0008] To address the problems in the existing technology, the technical solution adopted in this application is as follows:

[0009] A moving element suction force testing platform includes a worktable with two parallel slide rails on the worktable. A mounting bracket is slidably connected to the slide rails, and a mounting plate is mounted on the mounting bracket. The moving element is mounted on the lower surface of the mounting plate, and a pressure sensor is provided between the mounting plate and the mounting bracket to detect the vertical downward force of the moving element under the action of the stator suction force.

[0010] Preferably, the mounting bracket includes a slider slidably connected to a slide rail, the slider can only slide back and forth along the length of the slide rail, and a base plate is fixedly connected between the sliders on the two slide rails. The base plate is horizontally set, and the mounting plate is located below the base plate.

[0011] Preferably, four mounting holes are provided on the base plate in a rectangular arrangement. A mounting rod is slidably connected in the mounting holes, and the lower end of the mounting rod is fixedly connected to the mounting plate. A fixing plate is slidably connected to the outer wall of the upper end of the mounting rod. Two positioning nuts are threadedly connected to the outer wall of the upper end of the mounting rod, and the two positioning nuts abut against the upper and lower surfaces of the fixing plate, respectively. The pressure sensor is fixedly connected to the lower surface of the fixing plate.

[0012] Preferably, a sliding bearing is fixedly connected to the inner wall of the mounting hole, and the mounting rod is slidably connected to the inner wall of the sliding bearing.

[0013] Preferably, a grating ruler is fixedly connected to the upper surface of the workbench, and a reading head is fixedly connected to the side wall of the base plate.

[0014] Preferably, two limiting blocks are fixedly connected to the upper surface of the base plate, and the lower surface of the fixing plate abuts against the upper surface of the limiting blocks.

[0015] This application fixes the mover to the mounting plate and the stator to the worktable. The mover is then driven above the stator. Under the suction force of the stator and the mover, the mounting rod drives the fixed plate to move downward. The fixed plate deforms under the action of the limit block. The pressure sensor obtains the suction force of the mover by measuring the deformation of the fixed plate. With this setting, the structure is simple and easy to operate, making it convenient for the operator to detect the suction force between the mover and the stator. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the structure on the base plate in an embodiment of this application.

[0018] Reference numerals in the attached diagram: 1. Worktable; 2. Slide rail; 3. Mounting bracket; 4. Mounting plate; 5. Pressure sensor; 6. Slider; 7. Base plate; 8. Mounting hole; 9. Mounting rod; 10. Fixing plate; 11. Positioning nut; 12. Sliding bearing; 13. Grating ruler; 14. Reading head; 15. Limit block. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] like Figure 1 , Figure 2As shown, a moving-electromagnetic attraction testing platform includes a workbench 1 with a rectangular tabletop. Two parallel slide rails 2 are fixedly connected to the upper surface of the workbench 1. A mounting bracket 3 is slidably connected to the slide rails 2, and the mounting bracket 3 includes a slider 6 slidably connected to the slide rails 2. The slider 6 can only slide along the length of the slide rails 2. A base plate 7 is fixedly connected between the sliders 6 on the two slide rails 2. The base plate 7 is horizontally positioned and has four mounting holes 8 arranged in a rectangular pattern. A mounting rod 9 is slidably connected to each mounting hole 8. A mounting plate 4 is fixedly connected to the lower end face of the four mounting rods 9, and the mounting plate 4 is located below the base plate 7. The moving part is fixedly connected to the lower surface of the mounting plate 4. A fixed plate 10 is slidably connected to the outer wall of the upper end of the mounting rod 9. Two positioning nuts 11 are threadedly connected to the outer wall of the upper end of the mounting rod 9. The two positioning nuts 11 abut against the upper and lower surfaces of the fixed plate 10 respectively. A pressure sensor 5 is fixedly connected to the lower surface of the fixed plate 10. The pressure sensor 5 is a strain gauge pressure sensor used to detect the deformation of the fixed plate 10. Two limiting blocks 15 are fixedly connected to the upper surface of the base plate 7. The limiting blocks 15 are located between the fixed plate 10 and the base plate 7. The height of the limiting blocks 15 is the same as the height of the pressure sensor 5. The lower surface of the fixed plate 10 abuts against the lower surface of the limiting blocks 15.

[0021] like Figure 1 , Figure 2 As shown, in order to reduce the friction between the mounting rod 9 and the mounting hole 8, a sliding bearing 12 is fixedly connected to the inner wall of the mounting hole 8, and the mounting rod 9 is slidably connected to the inner wall of the sliding bearing 12.

[0022] like Figure 1 , Figure 2 As shown, in order to facilitate the operator to control the distance that the slider 6 slides on the slide rail 2, a grating ruler 13 is fixedly connected to the upper surface of the worktable 1. The grating ruler 13 is set along the length direction of the slide rail 2. A reading head 14 is fixedly connected to the side wall of the base plate 7. The reading head 14 is used to read the data on the grating ruler 13.

[0023] The working principle of this embodiment is as follows: The operator fixes the stator on the upper surface of the workbench 1, with the stator located between two slide rails 2. The operator fixes the mover on the mounting plate 4, then slides the mounting rod 9 into the mounting hole 8, fixes the base plate 7 on the slider 6, places the fixing plate 10 on the limiting block 15, slides the upper end of the mounting rod 9 on the fixing plate 10, tightens the positioning nut 11, adjusts the positioning nut 11 so that the fixing plate 10 is horizontally set, slides the slider 6 so that the mover moves above the stator, and the mover moves downward under the action of suction. The suction drives the fixing plate 10 to move through the mounting plate 4 and the mounting rod 9. The fixing plate 10 deforms under the action of the limiting block 15, and the pressure sensor 5 detects the suction of the mover through the deformation of the fixing plate 10.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 a process, method, article, or apparatus. Without further limitations, 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 said element.

[0025] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A moving-element attraction force testing platform, characterized in that, The device includes a workbench (1), on which two parallel slide rails (2) are provided. A mounting bracket (3) is slidably connected to the slide rails (2). A mounting plate (4) is mounted on the mounting bracket (3). The mover is mounted on the lower surface of the mounting plate (4). A pressure sensor (5) is provided between the mounting plate (4) and the mounting bracket (3) to detect the vertical downward force of the mover under the suction force of the stator.

2. The moving-element attraction test stand according to claim 1, characterized in that, The mounting bracket (3) includes a slider (6) slidably connected to the slide rail (2). The slider (6) can only slide back and forth along the length of the slide rail (2). A base plate (7) is fixedly connected between the sliders (6) on the two slide rails (2). The base plate (7) is horizontally set. The mounting plate (4) is located below the base plate (7).

3. The moving-element attraction test stand according to claim 2, characterized in that, Four mounting holes (8) are provided on the base plate (7). The four mounting holes (8) are arranged in a rectangular shape. A mounting rod (9) is slidably connected in the mounting holes (8). The lower end of the mounting rod (9) is fixedly connected to the mounting plate (4). A fixing plate (10) is slidably connected to the outer wall of the upper end of the mounting rod (9). Two positioning nuts (11) are threadedly connected to the outer wall of the upper end of the mounting rod (9). The two positioning nuts (11) abut against the upper and lower surfaces of the fixing plate (10) respectively. The pressure sensor (5) is fixedly connected to the lower surface of the fixing plate (10).

4. The moving-element attraction test stand according to claim 3, characterized in that, A sliding bearing (12) is fixedly connected to the inner wall of the mounting hole (8), and the mounting rod (9) is slidably connected to the inner wall of the sliding bearing (12).

5. The moving-element attraction test stand according to claim 4, characterized in that, A grating ruler (13) is fixedly connected to the upper surface of the workbench (1), and a reading head (14) is fixedly connected to the side wall of the base plate (7).

6. The moving-element attraction test stand according to claim 5, characterized in that, Two limiting blocks (15) are fixedly connected to the upper surface of the base plate (7), and the lower surface of the fixing plate (10) abuts against the upper surface of the limiting blocks (15).

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