Working method of device for measuring polarity and flatness of linear motor magnet

Abstract

The invention provides a working method of a device for measuring polarity and flatness of a linear motor magnet. The device comprises a platform supporting 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 the following steps: measuring the polarity and flatness of the stator assembly, measuring the polarity of the magnet on the stator assembly by using the Hall mounting block and the Hall element, and measuring the flatness of the surface of the magnet on the stator assembly by using the laser sensor. The device is simple in positioning, high in measurement precision, reliable in quality, high in applicability and capable of achieving automatic sampling measurement, measurement data can be directly transmitted to a computer to be automatically processed, and a judgment result is automatically obtained according to the processed data.

Description

TECHNICAL FIELD

[0001] The application relates to the field of measuring devices, and particularly relates to a working method of a device for measuring the polarity and flatness of a linear motor magnet. BACKGROUND

[0002] With the rapid development of science and technology, the linear motor is widely used in the industrial manufacturing field as a traditional module upgrading and replacement scheme. For many industrial application occasions, such as a scara mechanical arm, a numerical control machining center, a 3C photoetching platform and a three-coordinate measuring field, the linear motor is required to have high running precision and small noise and vibration, so that the positioning precision and machining precision are guaranteed. In addition to the requirement of high machining precision of motor related parts, the assembly quality is also required to be high, and an important index for measuring the assembly quality is a magnet polarity and flatness, that is, the magnet polarity cannot be reversed and the magnet cannot protrude from the surface of the magnetic steel. Most of the existing patents detect only the magnetism of the magnet, and do not mention the flatness detection. Therefore, after the magnet of the linear motor dynamic stator assembly is assembled, the manual detection and observation are time-consuming and laborious, and errors are easy to occur. Once the errors are missed, the entire motor needs to be reassembled, the magnet is generally fixed by structural glue, and the disassembly and repair are difficult, and the rework cost is high.

[0003] For example, the utility model patent with the publication number CN216670244U has been published at the present stage, and only provides a magnet polarity detection flow device. The device can measure the polarity, but does not have the function of detecting the flatness, and is not suitable for small-batch manual production fields. For example, the utility model patent with the publication number CN219065718U and the utility model patent with the publication number CN218383254U have been published, and only provide a single magnet surface polarity device. The device does not involve the flatness measurement. SUMMARY

[0004] In order to solve the problems in the prior art, the application provides a working method of a device for measuring the polarity and flatness of a linear motor magnet. The positioning is simple, the measurement precision is high, the quality is reliable, the applicability is relatively strong, automatic sampling measurement can be realized, the measurement data can be directly transmitted to a computer for automatic processing, and a judgment result is automatically output according to the processing data.

[0005] The application 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 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 positioning plate assembly is installed on the platform support frame through the X-axis module assembly and the Y-axis module assembly, the stator assembly is installed in a groove in the center of the positioning plate assembly, and the positioning plate assembly has the freedom along the X-axis and Y-axis directions through the X-axis module assembly and the Y-axis module assembly; the first Z-axis module assembly and the second Z-axis module assembly are fixedly connected with the platform support frame through the bent arm piece and suspended above the stator assembly, wherein the laser sensor is installed on the first Z-axis module assembly through the laser sensor mounting seat, the laser sensor has the freedom along the Z-axis, the Hall mounting block is installed on the second Z-axis module assembly through the mounting block connecting plate, the Hall element is installed on the Hall mounting block, and the Hall mounting block and the Hall element have the freedom along the Z-axis.

[0006] Further improvement, the platform support frame is internally provided with a controller module connected with the X-axis module assembly, the Y-axis module assembly, the first Z-axis module assembly and the second Z-axis module assembly respectively.

[0007] Further improvement, the bent angle of the bent arm piece is 90°.

[0008] Further improvement, the stator assembly comprises a magnet, a magnetic steel and a base, the magnet is embedded in the center of the base, and the magnetic steel is distributed on the surface of the magnet.

[0009] The application also provides a working method of the device for measuring the polarity and flatness of a linear motor magnet, comprising measuring the polarity and flatness of the stator assembly.

[0010] When the polarity of the stator assembly is measured, the stator assembly is placed on the platform positioning plate assembly, the Hall mounting block provided with the Hall element is moved to a position 1mm away from the upper surface of the stator assembly and stopped, the Hall element is started, and the X-axis module assembly drives the stator assembly to move in the X direction; when the moving stroke exceeds the length of the stator assembly, the Hall element stops collecting; then the Z-axis module assembly drives the Hall mounting block to reset.

[0011] When measuring the surface flatness of the magnet, the first Z-axis module assembly drives the mounting seat with the laser sensor to move downward, stops at a distance of 100mm from the surface of the stator assembly, at this time the laser sensor starts data collection, and the X-axis module assembly drives the stator assembly to move along the X-axis direction; when the moving distance exceeds the set value, the X-axis module stops moving, the Y-axis module drives the stator assembly to move along the Y-axis direction for a certain distance, after moving to the position, the X-axis module assembly drives the stator assembly to move along the X-axis reverse direction, and the laser sensor stops collecting after the movement is completed; at this time, each module is reset.

[0012] The present application has the advantages that:

[0013] 1、The linear motor moving stator assembly with assembled magnets is quickly placed on the equipment detection platform for measurement, and the platform is provided with positioning blocks, so that the positioning is facilitated.

[0014] 2、The equipment comprises independent linear movements in X-axis, Y-axis and Z-axis directions, and can realize full-coverage measurement of the moving stator assembly.

[0015] 3、The independent Z-axis movement module with the Hall sensor probe and the laser ranging sensor is designed, so that the magnet polarity measurement and the flatness measurement can be realized on one platform at the same time, the determination result is automatically output according to the processed data, the assembly quality control is facilitated, and a large amount of resources and cost are avoided from being wasted due to unqualified products flowing into the assembled finished products.

[0016] 4、The flatness uses the laser sensor ranging, the contact sensor is avoided from being affected by the magnet magnetic field, the measurement data can be connected to the computer through the acquisition module, the visual interface is externally connected, the data can be quickly processed and visualized, and whether the product is qualified or not can be quickly determined. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0018] Figure 1 It is a whole structure schematic diagram of a device for measuring the magnet polarity and flatness of a linear motor;

[0019] Figure 2 It is a partial enlarged structure schematic diagram of a platform measurement part;

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

[0021] Figure 4 is a schematic diagram of a subassembly to be measured.

[0022] In the figure, 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° bending arm piece; 9, Hall mounting block; 10, stator assembly; 11, Y-axis module assembly; 12, laser sensor mounting seat; 13, mounting block connecting plate; 14, Hall element; 15, magnet; 16, magnetic steel; 17, base. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0024] A device for measuring the polarity and flatness of a linear motor magnet is provided, as shown in Figure 1 The device mainly comprises a controller module 1, a platform support frame 2, an X-axis module assembly 3, a positioning plate assembly 4 (as shown in Figure 3 ), a laser sensor 5, a first Z-axis module assembly 6, a second Z-axis module assembly 7, a 90° bending arm piece 8, a Hall mounting block 9, a stator assembly 10, a Y-axis module assembly 11, a laser sensor mounting seat 12, a mounting block connecting plate 13, a Hall element 14, and the like.

[0025] The positioning plate assembly is installed on the platform support frame through the X-axis module assembly and the Y-axis module assembly, the stator assembly is installed in a groove in the center of the positioning plate assembly, and the positioning plate assembly has two degrees of freedom along the X-axis and the Y-axis through the X-axis module assembly and the Y-axis module assembly; the first Z-axis module assembly and the second Z-axis module assembly are fixedly connected to the platform support frame through the bending arm piece and suspended above the stator assembly, wherein the laser sensor is installed on the first Z-axis module assembly through the laser sensor mounting seat, the laser sensor has a degree of freedom along the Z-axis, the Hall mounting block is installed on the second Z-axis module assembly through the mounting block connecting plate, the Hall element is installed on the Hall mounting block, and the Hall mounting block and the Hall element have a degree of freedom along the Z-axis, as shown in Figure 3 .

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

[0027] As shown in Figure 2 and Figure 1As shown, when measuring the polarity of the stator assembly 10, the stator assembly 10 is placed on the platform positioning plate assembly 4, the second Z-axis module assembly 7 drives the Hall mounting block 9 with the Hall element 14 to move to a position about 1 mm away from the upper surface of the stator assembly 10 and then stops (the servo motor of the second Z-axis module assembly 7 has a brake), and then starts to start the collection module, while the X-axis module assembly 3 drives the stator assembly 10 to move in the X direction, when the moving distance exceeds the length of the stator assembly 10, the Hall element 14 stops collecting; then the second Z-axis module assembly 7 drives the Hall mounting block 9 to reset, and the above is a complete action process for measuring the polarity of the magnet.

[0028] Similarly, when measuring the flatness of the magnet surface, the first Z-axis module assembly 6 drives the mounting seat 12 with the laser sensor 5 to move downward, and stops at a position about 100 mm away from the surface of the stator assembly 10, at which time the laser sensor starts data collection, while the X-axis module assembly 3 drives the stator assembly 10 to move along the X-axis direction; when the moving distance exceeds the set value, the X-axis module assembly 3 stops moving, the Y-axis module assembly 11 drives the stator assembly 10 to move along the Y-axis direction for a certain distance (because the width of the stator assembly magnet 15 is relatively wide; therefore, the flatness of the two sides of the magnet 15 is measured to ensure that both sides are flat and there is no convex magnet surface), after moving to the position, the X-axis module assembly 3 drives the stator assembly 10 to move along the X-axis in the opposite direction, and the laser sensor stops collecting after the movement is completed; each module is reset, and the above is a complete process for measuring the flatness of the magnet.

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

[0030] Each embodiment in the specification is described in a progressive manner, and the same and similar parts of each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device embodiment, the above description is only the preferred embodiment of the present application, and since it is basically similar to the method embodiment, it is described more simply, and the relevant part can be referred to the part of the method embodiment. The above description is only the specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any change or replacement within the technical range disclosed by the present application can be easily thought of by those skilled in the art, without departing from the principle of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of operating a device for measuring the polarity and flatness of a linear motor magnet, characterized by: The device 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 positioning plate assembly is installed on the platform support frame through the X-axis module assembly and the Y-axis module assembly, the stator assembly is installed in the groove in the center of the positioning plate assembly, and the positioning plate assembly has the freedom along the X-axis and the Y-axis through the X-axis module assembly and the Y-axis module assembly; the first Z-axis module assembly and the second Z-axis module assembly are fixedly connected with the platform support frame through the bent arm piece and suspended above the stator assembly, wherein the laser sensor is installed on the first Z-axis module assembly through the laser sensor mounting seat, the laser sensor has the freedom along the Z-axis, the Hall mounting block is installed on the second Z-axis module assembly through the mounting block connecting plate, the Hall element is installed on the Hall mounting block, and the Hall mounting block and the Hall element have the freedom along the Z-axis; the working method comprises measuring the polarity and flatness of the stator assembly. When measuring the polarity of the stator assembly, the stator assembly is placed on the positioning plate assembly of the platform, the Hall mounting block with the Hall element is moved to a position 1mm away from the upper surface of the stator assembly and stopped, the Hall element is started, and the X-axis module assembly drives the stator assembly to move in the X direction; when the moving distance exceeds the length of the stator assembly, the Hall element stops collecting; then the Z-axis module assembly drives the Hall mounting block to reset. When measuring the flatness of the magnet surface, the mounting seat with the laser sensor is moved downward by the first Z-axis module assembly, and stopped at a position 100mm away from the surface of the stator assembly; at this time, the laser sensor starts data collection, and the X-axis module assembly drives the stator assembly to move along the X-axis; when the moving distance exceeds the set value, the X-axis module stops moving, the Y-axis module drives the stator assembly to move along the Y-axis for a certain distance, and after the stator assembly is moved to the position, the X-axis module assembly drives the stator assembly to move along the X-axis in the opposite direction; after the movement is completed, the laser sensor stops collecting; and then each module is reset.

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

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

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