Method for operating a device for measuring the polarity and flatness of linear motor magnets

Abstract

The application provides a working method of a device for measuring linear motor magnet polarity and flatness, which comprises a platform support frame, an X-axis module assembly, a positioning plate assembly, a laser sensor, a first Z-axis module assembly, a second Z-axis module assembly, a bent arm piece, a Hall mounting block, a stator assembly, a Y-axis module assembly, a laser sensor mounting seat, a mounting block connecting plate and a Hall element. The working method comprises measuring the polarity and flatness of the stator assembly, measuring the polarity of the magnet on the stator assembly by means of the Hall mounting block and the Hall element, and measuring the flatness of the magnet surface on the stator assembly by means of the laser sensor. The application has the advantages of simple positioning, high measurement accuracy, reliable quality, strong applicability, automatic sampling measurement, direct transmission of measurement data to computer processing, automatic processing of the data and automatic output of the judgment result according to the processed data.

Description

Technical Field

[0001] This invention relates to the field of measuring devices, specifically a method for operating a device used to measure the polarity and flatness of a linear motor magnet. Background Technology

[0002] With the rapid development of technology, linear motors, as an upgrade and replacement solution for traditional modules, are widely used in industrial manufacturing. Many industrial applications, such as SCRA robotic arms, CNC machining centers, 3C lithography platforms, and coordinate measuring machines, require linear motors to have high operating accuracy and low noise and vibration to ensure positioning and machining precision. Besides requiring high machining precision for motor-related parts, high assembly quality is also essential. A key indicator of assembly quality is the polarity and flatness of the magnets; that is, the magnet polarity cannot be reversed and the magnets cannot protrude from the surface of the magnet steel. Most existing patents only test the magnetism of the magnet itself and do not mention flatness testing. Therefore, manually inspecting and observing the magnets of the linear motor's moving and stator components after assembly is time-consuming, labor-intensive, and prone to errors. If an error is missed, the entire motor assembly needs to be restarted. Magnets are generally fixed with structural adhesive, making disassembly and repair difficult and resulting in high rework costs.

[0003] For example, the currently published utility model patent with publication number CN216670244U only provides a device for detecting the polarity of a magnet; although this device can measure polarity, it does not have a flatness detection function and is not very suitable for small-batch manual production. Similarly, published utility model patents with publication numbers CN219065718U and CN218383254U also only provide a device for detecting the polarity of a single magnet surface, and these devices do not involve flatness measurement. Summary of the Invention

[0004] To address the problems of existing technologies, this invention provides a working method for a device used to measure the polarity and flatness of a linear motor magnet. The device features simple positioning, high measurement accuracy, reliable quality, and wide applicability. It can achieve automatic sampling and measurement, and the measurement data can be directly transmitted to a computer for automatic processing, automatically generating a judgment result based on the processed data.

[0005] This invention provides a device for measuring the polarity and flatness of a linear motor magnet, comprising a platform support frame, an X-axis module assembly, a positioning plate assembly, a laser sensor, a first Z-axis module assembly, a second Z-axis module assembly, a bent arm, a Hall effect mounting block, a stator assembly, a Y-axis module assembly, a laser sensor mounting base, a mounting block connecting plate, and a Hall effect element. The positioning plate assembly is mounted on the platform support frame via the X-axis and Y-axis module assemblies. The stator assembly is mounted in a groove in the center of the positioning plate assembly. The positioning plate assembly has degrees of freedom along both the X and Y axes via the X-axis and Y-axis module assemblies. The first and second Z-axis module assemblies are fixedly connected to the platform support frame via the bent arm and suspended above the stator assembly. A laser sensor is mounted on the first Z-axis module assembly via the laser sensor mounting base, and the laser sensor has a degree of freedom along the Z-axis. A Hall effect mounting block is mounted on the second Z-axis module assembly via the mounting block connecting plate, and a Hall effect element is mounted on the Hall effect mounting block. Both the Hall effect mounting block and the Hall effect element have degrees of freedom along the Z-axis.

[0006] In a further improvement, the platform support frame is equipped with controller modules that are respectively connected to the X-axis module assembly, the Y-axis module assembly, the first Z-axis module assembly, and the second Z-axis module assembly.

[0007] In a further improvement, the bending angle of the bent arm is 90°.

[0008] In a further improvement, the stator assembly includes a magnet, a magnet steel, and a base, with the magnet embedded in the center of the base and the magnet steel distributed on the surface of the magnet.

[0009] The present invention also provides a method for operating a device for measuring the polarity and flatness of a linear motor magnet, including measuring the polarity and flatness of a stator assembly;

[0010] When measuring the polarity of the stator assembly, the stator assembly is placed on the platform positioning plate assembly. The second Z-axis module assembly moves the Hall mounting block containing the Hall element to a distance of 1mm from the upper surface of the stator assembly and stops, thus activating the Hall element. At the same time, the X-axis module assembly moves the stator assembly in the X direction. When the travel distance exceeds the length of the stator assembly, the Hall element stops collecting data. Then, the Z-axis module assembly moves the Hall mounting block back to its original position.

[0011] When measuring the flatness of the magnet surface, the first Z-axis module assembly moves the mounting base equipped with the laser sensor downwards, stopping at a distance of 100mm from the surface of the stator assembly. At this point, the laser sensor begins data acquisition. Simultaneously, the X-axis module assembly moves the stator assembly along the X-axis direction. When the distance moved exceeds a set value, the X-axis module stops moving, and the Y-axis module moves the stator assembly a certain distance along the Y-axis direction. After reaching the desired position, the X-axis module assembly moves the stator assembly in the opposite direction along the X-axis. After the movement ends, the laser sensor stops acquiring data. All modules then reset.

[0012] The beneficial effects of this invention are as follows:

[0013] 1. This invention allows for the rapid placement of the assembled linear motor stator assembly with magnets onto a testing platform for measurement. The platform is equipped with positioning blocks to facilitate placement and positioning.

[0014] 2. The equipment includes independent linear motion in three directions: X-axis, Y-axis, and Z-axis, which can achieve full coverage measurement of the moving and stator components.

[0015] 3. By designing separate Z-axis motion modules with Hall sensor probes and laser rangefinders, magnet polarity and flatness measurements can be performed simultaneously on a single platform. The system automatically generates judgment results based on the processed data, facilitating assembly quality control and preventing defective products from entering the final assembly and causing significant waste of resources and costs.

[0016] 4. Flatness is measured using a laser sensor, avoiding the influence of magnetic fields that occur when using contact sensors. The measurement data can be connected to a computer via the acquisition module, and the data can be quickly processed and visualized through an external visualization interface to quickly determine whether it is qualified. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a device for measuring the polarity and flatness of a linear motor magnet.

[0019] Figure 2 This is a magnified schematic diagram of a portion of the platform's measurement section;

[0020] Figure 3 This is a schematic diagram of the platform surface positioning plate assembly structure;

[0021] Figure 4 This is a schematic diagram of the sub-component to be tested.

[0022] In the diagram, 1. Controller module; 2. Platform support frame; 3. X-axis module assembly; 4. Positioning plate assembly; 5. Laser sensor; 6. First Z-axis module assembly; 7. Second Z-axis module assembly; 8. 90° curved arm; 9. Hall effect mounting block; 10. Stator assembly; 11. Y-axis module assembly; 12. Laser sensor mounting base; 13. Mounting block connecting plate; 14. Hall effect element; 15. Magnet; 16. Magnet steel; 17. Base. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] This patent describes a device for measuring the polarity and flatness of a linear motor magnet, such as... Figure 1 As shown; it mainly consists of controller module 1, platform support frame 2, X-axis module assembly 3, and positioning plate assembly 4 (such as...). Figure 3 It consists of a laser sensor 5, a first Z-axis module assembly 6, a second Z-axis module assembly 7, a 90° curved arm 8, a Hall mounting block 9, a stator assembly 10, a Y-axis module assembly 11, a laser sensor mounting base 12, a mounting block connecting plate 13, a Hall element 14, etc.

[0025] The positioning plate assembly is mounted on the platform support frame via the X-axis and Y-axis module assemblies. The stator assembly is installed in the groove in the center of the positioning plate assembly. The positioning plate assembly has degrees of freedom in both the X-axis and Y-axis directions via the X-axis and Y-axis module assemblies. The first and second Z-axis module assemblies are fixedly connected to the platform support frame via bent arms and suspended above the stator assembly. A laser sensor is mounted on the first Z-axis module via a laser sensor mounting base, and the laser sensor has a degree of freedom along the Z-axis. A Hall effect mounting block is mounted on the second Z-axis module via a mounting block connecting plate. A Hall effect element is mounted on the Hall effect mounting block, and both the Hall effect mounting block and the Hall effect element have degrees of freedom along the Z-axis. Figure 3 As shown.

[0026] The stator assembly, as shown Figure 4 As shown, it includes a magnet 15, a steel magnet 16, and a base 17. The magnet is embedded in the center of the base, and the steel magnets are distributed on the surface of the magnet.

[0027] like Figure 2 and Figure 1As shown, when measuring the polarity of stator assembly 10, stator assembly 10 is placed on platform positioning plate assembly 4. The second Z-axis module assembly 7 moves the Hall mounting block 9, which is equipped with Hall element 14, to a position about 1 mm away from the upper surface of stator assembly 10 and stops (the servo motor of the second Z-axis module assembly 7 includes a brake). Then the acquisition module is started. At the same time, the X-axis module assembly 3 moves stator assembly 10 in the X direction. When the travel distance exceeds the length of stator assembly 10, Hall element 14 stops acquisition. Then the second Z-axis module assembly 7 moves Hall mounting block 9 to reset. The above is a complete action process for measuring the polarity of a magnet.

[0028] Similarly, when measuring the flatness of the magnet surface, the first Z-axis module 6 moves the mounting base 12 equipped with the laser sensor 5 downwards, stopping at a position approximately 100mm from the surface of the stator assembly 10. At this point, the laser sensor begins data acquisition, and simultaneously, the X-axis module 3 moves the stator assembly 10 along the X-axis. When the moving distance exceeds a set value, the X-axis module 3 stops moving, and the Y-axis module 11 moves the stator assembly 10 a certain distance along the Y-axis (because the width of the stator assembly magnet 15 is relatively wide; therefore, the flatness of both sides of the magnet 15 is measured to ensure that both sides are flat and do not protrude from the magnet surface). After moving into position, the X-axis module 3 moves the stator assembly 10 in the opposite direction along the X-axis. After the movement ends, the laser sensor stops acquiring data; at the same time, all modules reset. This is a complete process for measuring the flatness of a magnet.

[0029] Finally, after processing the collected data, the judgment result is displayed on the interface.

[0030] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, for the apparatus embodiments, the above descriptions are merely preferred embodiments of the present invention. Since they are fundamentally similar to the method embodiments, the descriptions are relatively simple, and relevant parts can be referred to the descriptions of the method embodiments. The above descriptions are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention, without departing from the principle of the present invention, should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for operating a device for measuring the polarity and flatness of a linear motor magnet, characterized in that: The device includes a platform support frame, an X-axis module assembly, a positioning plate assembly, a laser sensor, a first Z-axis module assembly, a second Z-axis module assembly, a curved arm, a Hall effect mounting block, a stator assembly, a Y-axis module assembly, a laser sensor mounting base, a mounting block connecting plate, and a Hall effect element. The positioning plate assembly is mounted on the platform support frame via the X-axis and Y-axis module assemblies. The stator assembly is mounted in a groove in the center of the positioning plate assembly. The positioning plate assembly has degrees of freedom along both the X and Y axes via the X-axis and Y-axis module assemblies. The first and second Z-axis module assemblies are fixedly connected to the platform support frame via the curved arm and suspended above the stator assembly. A laser sensor with a Z-axis degree of freedom is mounted on the first Z-axis module via the laser sensor mounting base. The second Z-axis module has a Hall effect mounting block with a Hall effect element mounted on it via the mounting block connecting plate. Both the Hall effect mounting block and the Hall effect element have Z-axis degrees of freedom. The working method includes measuring the polarity and flatness of the stator assembly. When measuring the polarity of the stator assembly, the stator assembly is placed on the platform positioning plate assembly. The second Z-axis module assembly moves the Hall mounting block containing the Hall element to a distance of 1 mm from the upper surface of the stator assembly and stops, thus activating the Hall element. At the same time, the X-axis module assembly moves the stator assembly in the X direction. When the travel distance exceeds the length of the stator assembly, the Hall element stops acquiring data. Then, the Z-axis module assembly moves the Hall mounting block back to its original position. When measuring the flatness of the magnet surface, the first Z-axis module assembly moves the mounting base equipped with the laser sensor downwards, stopping at a distance of 100mm from the surface of the stator assembly. At this point, the laser sensor begins data acquisition, and simultaneously, the X-axis module assembly moves the stator assembly along the X-axis. When the distance moved exceeds a set value, the X-axis module stops moving, and the Y-axis module moves the stator assembly a certain distance along the Y-axis. After moving to the correct position, the X-axis module assembly moves the stator assembly in the opposite direction along the X-axis. After the movement ends, the laser sensor stops acquiring data, and all modules reset.

2. The operating method of the device for measuring the polarity and flatness of a linear motor magnet according to claim 1, characterized in that: The platform support frame is equipped with controller modules that are respectively connected to the X-axis module assembly, Y-axis module assembly, first Z-axis module assembly, and second Z-axis module assembly.

3. The operating method of the device for measuring the polarity and flatness of a linear motor magnet according to claim 1, characterized in that: The stator assembly includes a magnet, a magnet steel, and a base, with the magnet embedded in the center of the base and the magnet steel distributed on the surface of the magnet.

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