Surface-mounted permanent magnet mounting and positioning tool

Abstract

The application discloses a surface-mounted permanent magnet installation and positioning tool, which comprises a rotating shaft, an axial positioning assembly, a radial positioning assembly, a circumferential positioning assembly, an axial push rod assembly and a radial fixing assembly. An outer circumferential surface of the rotating shaft is sequentially formed with a positioning surface, an installation surface and a fixing surface. The axial positioning assembly is sleeved on the positioning surface. The radial positioning assembly and the circumferential positioning assembly are respectively sleeved on the installation surface and sequentially detachably connected with the axial positioning assembly. The axial push rod assembly is sleeved on the fixing surface. The radial fixing assembly is sleeved outside the radial positioning assembly. The application is accurate in positioning, convenient in installation and detection, can improve installation efficiency and is suitable for use in batch production.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet motor manufacturing, and in particular to a surface-mounted permanent magnet installation and positioning tool, which is particularly suitable for surface-mounted permanent magnet motors produced in batches and on a large scale. Background Art

[0002] The rotor of a permanent magnet motor is equipped with pre-magnetized permanent magnets. The installation methods of permanent magnets are generally divided into built-in and surface-mount types. The built-in rotor permanent magnets have fixed mounting slots for easy installation. Compared with the built-in permanent magnet motor, the surface-mount permanent magnet motor has the advantages of simple processing and low magnetic leakage. Furthermore, the permanent magnet installation of the surface-mount permanent magnet motor is divided into protruding and inserted structures. Among them, the surface protruding type has the advantages of simple structure and low manufacturing cost, and is currently a widely used permanent magnet installation method.

[0003] However, the installation of existing protruding surface-mount permanent magnets has the following shortcomings: 1. Due to the relatively simple positioning tooling used, there is a possibility of inaccurate positioning and the permanent magnet position is easily deviated, which in turn affects the electromagnetic and vibration performance of the motor and reduces the motor efficiency; 2. Due to the large interaction force between the permanent magnets, manual assembly cannot complete the pressing of the permanent magnets, and safety accidents are prone to occur; 3. Since the radial positioning and radial fixing functions are achieved by a single component, the pressure of radial fixing can easily cause the part to deform, resulting in inaccurate radial positioning. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a high-precision, high-efficiency surface-mount permanent magnet installation and positioning tooling to optimize the installation method of the permanent magnet, so as to solve the technical problem of inaccurate positioning in the existing permanent magnet installation, which leads to deviation in the permanent magnet installation position and thus affects the electromagnetic and vibration performance of the motor and reduces the motor efficiency.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A surface-mount permanent magnet installation and positioning tool, comprising:

[0007] A rotating shaft, wherein a positioning surface, a mounting surface and a fixing surface are sequentially formed on the outer circumferential surface of the rotating shaft;

[0008] An axial positioning assembly, the axial positioning assembly being sleeved on the positioning surface;

[0009] a radial positioning assembly and a circumferential positioning assembly, wherein the radial positioning assembly and the circumferential positioning assembly are respectively sleeved on the mounting surface and are detachably connected to the axial positioning assembly in sequence;

[0010] An axial push rod assembly, wherein the axial push rod assembly is sleeved on the fixing surface;

[0011] A radial fixing assembly, the radial fixing assembly being sleeved on the outside of the radial positioning assembly;

[0012] Wherein, each of the above components is coaxially arranged with the rotating shaft.

[0013] In some embodiments, the axial positioning assembly includes a positioning plate and a washer, wherein the positioning plate is composed of two symmetrical semicircular plates, each of which has mounting holes formed at both ends, and the two symmetrical semicircular plates are detachably connected to the positioning surface through the mounting holes;

[0014] A first positioning hole is formed on each of the semicircular plates, and a second positioning hole corresponding to the first positioning hole is formed on the gasket.

[0015] In some embodiments, the radial positioning assembly includes a first radial positioning ring, the first radial positioning ring is formed with a third positioning hole, and the first radial positioning ring, the gasket and the positioning plate are connected through the corresponding third positioning hole, the second positioning hole and the first positioning hole.

[0016] In some embodiments, the radial positioning assembly further includes a plurality of second radial positioning rings, wherein a first outer stop is formed on one side of the second radial positioning ring, an inner stop is formed on one side of the first radial positioning ring, and the second radial positioning ring and the first radial positioning ring are connected by fitting the inner stop and the first outer stop;

[0017] The inner stop is further formed on the other side of the second radial positioning ring, and every two adjacent second radial positioning rings are connected by the cooperation of the inner stop and the first outer stop.

[0018] In some embodiments, a first through groove penetrating the axial direction of the first radial positioning ring is formed on the outer wall of the first radial positioning ring, and a second through groove penetrating the axial direction of the second radial positioning ring is formed on the outer wall of the second radial positioning ring.

[0019] In some embodiments, a first observation hole is further formed on the outer wall of the first radial positioning ring, and a second observation hole is further formed on the outer side of the second radial positioning ring.

[0020] In some embodiments, the circumferential positioning assembly includes a first circumferential positioning ring, a second outer stop that cooperates with the inner stop is formed on one side of the first circumferential positioning ring, and a third through groove that runs axially through the first circumferential positioning ring is formed on the outer wall of the first circumferential positioning ring, the third through groove corresponding to the first through groove and the second through groove respectively;

[0021] The first circumferential positioning ring is further formed with a fourth positioning hole, the fourth positioning hole corresponding to the third positioning hole, the second positioning hole and the first positioning hole;

[0022] Long teeth are regularly arranged circumferentially inside the first circumferential positioning ring, and a gap between every two adjacent long teeth forms a first permanent magnet mounting groove.

[0023] In some embodiments, the circumferential positioning assembly further includes a second circumferential positioning ring, a third outer stop formed on one side of the second circumferential positioning ring to cooperate with the inner stop, and a fourth through groove formed on the outer wall of the second circumferential positioning ring axially extending through the second circumferential positioning ring, the fourth through groove corresponding to the first through groove and the second through groove respectively;

[0024] Second permanent magnet mounting grooves are regularly formed inside the second circumferential positioning ring along the circumference.

[0025] In some embodiments, the axial push rod assembly includes a fixing plate and a push rod, wherein the fixing plate is composed of two symmetrical arc-shaped plates, each of which has a connecting hole formed at both ends, and the two arc-shaped plates are detachably connected to the fixing surface through the connecting holes;

[0026] Each of the arc-shaped plates is formed with a through hole, and the push rod is arranged through the through hole.

[0027] In some embodiments, the radial fixing assembly is an annular structure, and the annular structure is formed with a tightening hole for inserting a tightening bolt and a third observation hole corresponding to the first observation hole and the second observation hole respectively.

[0028] Compared with the prior art, the present invention provides a surface-mounted permanent magnet installation and positioning tool, which can axially position the permanent magnet through an axial positioning component, radially position the permanent magnet through a radial positioning component, and circumferentially position the permanent magnet through a circumferential positioning component. Therefore, the present invention can accurately position, improve the electromagnetic and vibration performance of the motor, and thus improve the motor efficiency; at the same time, the permanent magnet can be pressed in through the axial push rod component, avoiding the situation where it cannot be pressed in manually and safety accidents are prone to occur; in addition, the present invention separately sets a radial fixing component for realizing the radial fixing function, and the radial positioning component is used to realize radial positioning, which solves the technical problem that the pressure of radial fixing easily causes the parts to deform and leads to inaccurate radial positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the positioning tooling of the present invention;

[0030] Figure 2 It is a structural schematic diagram of the rotating shaft of the present invention;

[0031] Figure 3 Schematic diagram of the structure of the semicircular plate constituting the positioning plate of the present invention;

[0032] Figure 4 is a schematic structural diagram of the gasket of the present invention;

[0033] Figure 5 is a schematic structural diagram of the first radial positioning ring of the present invention;

[0034] Figure 6 is a schematic structural diagram of the second radial positioning ring of the present invention;

[0035] Figure 7 is a schematic structural diagram of the first circumferential positioning ring of the present invention;

[0036] Figure 8 is a schematic structural diagram of the second circumferential positioning ring of the present invention;

[0037] Figure 9 is a schematic structural diagram of the radial fixing assembly of the present invention;

[0038] Figure 10 Schematic diagram of the structure of the curved plate constituting the fixed plate of the present invention;

[0039] Figure 11 It is a schematic diagram of installing the axial positioning assembly and the radial positioning assembly of the present invention on a rotating shaft;

[0040] Figure 12 Schematic diagram of a permanent magnet of a motor installed by the tooling of the present invention.

[0041] The following are the descriptions of the reference numerals:

[0042] 100, rotating shaft, 110, positioning surface, 120, mounting surface, 130, fixing surface;

[0043] 200, axial positioning assembly, 210, positioning plate, 211, first positioning hole, 212, mounting hole, 220, washer, 221, second positioning hole;

[0044] 300, radial positioning assembly, 310, first radial positioning ring, 311, third positioning hole, 312, inner stop, 313, first through-slot, 314, first observation hole, 320, second radial positioning ring, 321, first outer stop, 322, second through-slot, 323, second observation hole;

[0045] 400, circumferential positioning assembly, 410, first circumferential positioning ring, 411, second outer stop, 412, third through-slot, 413, fourth positioning hole, 414, long tooth, 415, first permanent magnet mounting slot, 420, second circumferential positioning ring, 421, third outer stop, 422, fourth through-slot, 423, second permanent magnet mounting slot;

[0046] 500, axial push rod assembly, 510, fixing plate, 511, through hole, 512, connecting hole, 520, push rod;

[0047] 600, radial fixing assembly, 610, pressing hole, 620, third observation hole;

[0048] 700. End plate. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention 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 only used to explain the present invention and are not intended to limit the present invention.

[0050] See also Figure 1 As shown, the present invention provides a surface-mounted permanent magnet installation and positioning tool, including a rotating shaft 100, an axial positioning assembly 200, a radial positioning assembly 300, a circumferential positioning assembly 400, an axial push rod assembly 500 and a radial fixing assembly 600.

[0051] Combine Figure 2 As shown, the rotating shaft 100 is the shaft for transmitting torque of the rotor, and the outer circumferential surface of the rotating shaft 100 is sequentially formed with a positioning surface 110, a mounting surface 120 and a fixing surface 130; the axial positioning component 200 is sleeved on the positioning surface 110; the radial positioning component 300 and the circumferential positioning component 400 are respectively sleeved on the mounting surface 120 and are detachably connected to the axial positioning component 200 in sequence; the axial push rod assembly 500 is sleeved on the fixing surface 130; the radial fixing component 600 is sleeved on the outside of the radial positioning component 300; and the above-mentioned components are all coaxially arranged with the rotating shaft 100 to ensure the accuracy of axial positioning.

[0052] The present invention realizes the axial positioning of the permanent magnet by the axial positioning assembly 200, realizes the radial positioning of the permanent magnet by the radial positioning assembly 300, and realizes the circumferential positioning of the permanent magnet by the circumferential positioning assembly 400. Therefore, the present invention can improve the positioning accuracy, avoid the permanent magnet from being offset, and improve the installation accuracy. At the same time, the present invention can press the permanent magnets in sequence by the axial push rod assembly 500, avoid the safety accidents that are easy to occur in manual installation, and improve the installation efficiency. In addition, the present invention separately designs the radial fixing assembly 600 to fix the radial direction of the permanent magnet, without affecting the radial positioning of the permanent magnet by the radial positioning assembly 300, thereby ensuring the positioning accuracy. Therefore, the positioning tool provided by the present invention has the advantages of accurate positioning, convenient installation and detection, and the ability to improve installation efficiency, and is suitable for use in mass production.

[0053] It should be noted that the above components of the present invention are all coaxially arranged with the rotating shaft 100; the rotating shaft 100 of the present invention is made of magnetic conductive material, while the materials of the other components are all non-magnetic conductive materials.

[0054] The components and working principles of the surface-mounted permanent magnet installation and positioning tooling of the present invention are described in detail below.

[0055] In one embodiment, the combination Figure 3 and Figure 4 As shown, the axial positioning assembly 200 includes a positioning plate 210 and a washer 220. The positioning plate 210 is composed of two symmetrical semicircular plates, each of which is respectively formed with a first positioning hole 211 and each of the two ends of each semicircular plate is formed with a mounting hole 212. The two symmetrical semicircular plates are detachably connected to the positioning surface 110 using bolts through the mounting holes 212; the washer 220 is formed with a second positioning hole 221 corresponding to the first positioning hole 211.

[0056] In one embodiment, the combination Figure 5 As shown, the radial positioning assembly 300 includes a first radial positioning ring 310, which is formed with a third positioning hole 311. The first radial positioning ring 310, the washer 220 and the positioning plate 210 are connected by bolts through the corresponding third positioning hole 311, the second positioning hole 221 and the first positioning hole 211.

[0057] In one embodiment, the combination Figure 6 As shown, the radial positioning assembly 300 also includes a plurality of second radial positioning rings 320, a first outer stop 321 is formed on one side of the second radial positioning ring 320, an inner stop 312 is formed on one side of the first radial positioning ring 310, the second radial positioning ring 320 and the first radial positioning ring 310 are connected by the inner stop 312 and the first outer stop 321; the inner stop 312 is also formed on the other side of the second radial positioning ring 320, and each two adjacent second radial positioning rings 320 are connected by the inner stop 312 and the first outer stop 321.

[0058] In one embodiment, a first through groove 313 is formed on the outer wall of the first radial positioning ring 310 and runs through the first radial positioning ring 310 in an axial direction. A second through groove 322 is formed on the outer wall of the second radial positioning ring 320 and runs through the second radial positioning ring 320 in an axial direction.

[0059] In one embodiment, a first observation hole 314 is further formed on the outer wall of the first radial positioning ring 310 , and a second observation hole 323 is further formed on the outer wall of the second radial positioning ring 320 .

[0060] In one embodiment, the combination Figure 7 As shown, the circumferential positioning assembly 400 includes a first circumferential positioning ring 410, and a second outer stop 411 is formed on one side of the first circumferential positioning ring 410 to cooperate with the inner stop 312. The outer wall of the first circumferential positioning ring 410 is formed with a third through groove 412 that passes through the first circumferential positioning ring 410 axially, and the third through groove 412 corresponds to the first through groove 313 and the second through groove 322 respectively; the first circumferential positioning ring 410 is also formed with a fourth positioning hole 413, and the fourth positioning hole 413 corresponds to the third positioning hole 311, the second positioning hole 221 and the first positioning hole 211; the interior of the first circumferential positioning ring 410 is regularly arranged along the circumference, and the gap between each two adjacent long teeth 414 forms a first permanent magnet mounting groove 415.

[0061] In one embodiment, the combination Figure 8 As shown, the circumferential positioning assembly 400 also includes a second circumferential positioning ring 420, and a third outer stop 421 that cooperates with the inner stop 312 is formed on one side of the second circumferential positioning ring 420. The outer wall of the second circumferential positioning ring 420 is formed with a fourth through groove 422 that passes through the second circumferential positioning ring 420 axially, and the fourth through groove 422 corresponds to the first through groove 313 and the second through groove 322 respectively; the interior of the second circumferential positioning ring 420 is regularly formed with second permanent magnet mounting grooves 423 along the circumferential direction.

[0062] In one embodiment, the combination Figure 9 As shown, the radial fixing assembly 600 is an annular structure, which is formed with a tightening hole 610 for inserting a tightening bolt and a third observation hole 620 corresponding to the first observation hole 314 and the second observation hole 323 respectively.

[0063] In one embodiment, the combination Figure 10 As shown, the axial push rod assembly 500 includes a fixed plate 510 and a push rod 520. The fixed plate 510 is composed of two symmetrical arc-shaped plates. A connecting hole 512 is formed at both ends of each arc-shaped plate. The two arc-shaped plates are detachably connected to the fixed surface 130 by inserting bolts through the connecting holes 512; each arc-shaped plate is formed with a through hole 511, and the push rod 520 is arranged through the through hole 511.

[0064] The working process of the surface-mount permanent magnet installation and positioning tool provided by the present invention is as follows:

[0065] Combine Figure 11As shown, the positioning plate 210 is connected to the positioning surface 110 of the rotating shaft 100 by bolts through the mounting hole 212, and then the washer 220 and the first radial positioning ring 310 are successively placed close to the positioning plate 210 and sleeved on the mounting surface 120, and the first radial positioning ring 310, the washer 220 and the positioning plate 210 are fixedly connected by passing the bolts into the third positioning hole 311, the second positioning hole 221 and the first positioning hole 211; thereafter, the second outer stop 411 of the first circumferential positioning ring 410 is matched with the inner stop 312, and then the pin is inserted into the third through groove 412 and the first through groove 313 for positioning, and at the same time, the bolt is inserted into the fourth positioning hole 413 and the third positioning hole 311 for fixed connection, and the long teeth 414 extend into the inner ring of the first radial positioning ring 310; next, the fixing plate 510 is installed on the fixing surface 130 through the connecting hole 512, and the push rod 520 is inserted into one of the through holes 511, as shown Figure 1 As shown, align the N pole of the permanent magnet with one of the first permanent magnet mounting slots 415, push the N pole of the first permanent magnet in through the push rod 520, and check the installation status through the first observation hole 314 after pushing it in. After checking, install the radial fixing assembly 600, and radially press the N pole of the permanent magnet by radially pressing the screw into the pressing hole 610; after the installation is completed, remove the pin and the first circumferential positioning ring 410, and install the second circumferential positioning ring 420 in the same way, and then use the push rod 520 to push the S pole of the permanent magnet into the second permanent magnet When the second to Nth circles of permanent magnets are installed, the second radial positioning ring 320 is installed on the first radial positioning ring 310 through the cooperation of the first outer stop 321 and the inner stop 312, and then the first circumferential positioning ring 410 and the second circumferential positioning ring 420 are installed on the second radial positioning ring 320 in turn according to the above method, and the N poles and S poles of the permanent magnets of the second to Nth circles are installed in sequence until all the permanent magnets are installed. The permanent magnets after installation are as shown in FIG. Figure 12 shown.

[0066] In addition, after the permanent magnet is installed, an end plate 700 needs to be added to each end of the installed permanent magnet to prevent the permanent magnet from axial movement. Further, the end plate 700 is heat-shrink-fitted onto the rotating shaft 100.

[0067] It should be noted that if the rotating shaft 100 is made of non-magnetic conductive material, it is necessary to install a section of rotating shaft made of magnetic conductive material on the rotating shaft 100 by interference fitting before installing the permanent magnet.

[0068] In summary, the surface-mount permanent magnet installation and positioning tool provided by the present invention has the following beneficial effects:

[0069] 1. The axial positioning assembly 200, radial positioning assembly 300 and circumferential positioning assembly 400 can accurately position the permanent magnet, thereby improving the accuracy of permanent magnet installation;

[0070] 2. The axial push rod assembly 500 can replace manual labor to press the permanent magnet, avoiding safety accidents and improving installation efficiency, making it suitable for mass production;

[0071] 3. The radial fixing assembly 600 can be provided to compress and fix the permanent magnet in the radial direction, further improving the positioning accuracy;

[0072] 4. The axial positioning assembly 200 and the axial push rod assembly 500 connected to the rotating shaft 100 by screws avoid increasing the design volume of the rotating shaft 100 interface;

[0073] 5. The first observation hole 314, the second observation hole 323 and the third observation hole 620 can be used to observe the installation status during the installation process, and timely rework can be carried out if any unqualified items are found, thus shortening the installation time.

[0074] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A surface-mount permanent magnet installation and positioning tool, characterized in that: include: A rotating shaft, wherein a positioning surface, a mounting surface and a fixing surface are sequentially formed on the outer circumferential surface of the rotating shaft; An axial positioning assembly, the axial positioning assembly being sleeved on the positioning surface; a radial positioning assembly and a circumferential positioning assembly, wherein the radial positioning assembly and the circumferential positioning assembly are respectively sleeved on the mounting surface and are detachably connected to the axial positioning assembly in sequence; An axial push rod assembly, wherein the axial push rod assembly is sleeved on the fixing surface; A radial fixing assembly, the radial fixing assembly being sleeved on the outside of the radial positioning assembly; Wherein, each of the above components is coaxially arranged with the rotating shaft; The axial positioning assembly includes a positioning plate and a washer. The positioning plate is composed of two symmetrical semicircular plates. Both ends of each semicircular plate are formed with mounting holes. The two symmetrical semicircular plates are detachably connected to the positioning surface through the mounting holes. A first positioning hole is formed on each of the semicircular plates, and a second positioning hole corresponding to the first positioning hole is formed on the gasket.

2. The surface-mount permanent magnet installation and positioning tool according to claim 1, characterized in that: The radial positioning assembly includes a first radial positioning ring, the first radial positioning ring is formed with a third positioning hole, and the first radial positioning ring, the washer and the positioning plate are connected through the corresponding third positioning hole, the second positioning hole and the first positioning hole.

3. The surface-mount permanent magnet installation and positioning tool according to claim 2, characterized in that: The radial positioning assembly further includes a plurality of second radial positioning rings, wherein a first outer stop is formed on one side of the second radial positioning ring, an inner stop is formed on one side of the first radial positioning ring, and the second radial positioning ring and the first radial positioning ring are connected by the cooperation of the inner stop and the first outer stop; The inner stop is further formed on the other side of the second radial positioning ring, and every two adjacent second radial positioning rings are connected by the cooperation of the inner stop and the first outer stop.

4. The surface-mount permanent magnet installation and positioning tool according to claim 3, characterized in that: A first through groove penetrating the axial direction of the first radial positioning ring is formed on the outer wall of the first radial positioning ring, and a second through groove penetrating the axial direction of the second radial positioning ring is formed on the outer wall of the second radial positioning ring.

5. The surface-mount permanent magnet installation and positioning tool according to claim 4, characterized in that: A first observation hole is further formed on the outer wall of the first radial positioning ring, and a second observation hole is further formed on the outer side of the second radial positioning ring.

6. The surface-mount permanent magnet installation and positioning tool according to claim 4, characterized in that: The circumferential positioning assembly includes a first circumferential positioning ring, a second outer stop that cooperates with the inner stop is formed on one side of the first circumferential positioning ring, and a third through groove that runs axially through the first circumferential positioning ring is formed on the outer wall of the first circumferential positioning ring, the third through groove corresponding to the first through groove and the second through groove respectively; The first circumferential positioning ring is further formed with a fourth positioning hole, the fourth positioning hole corresponding to the third positioning hole, the second positioning hole and the first positioning hole; Long teeth are regularly arranged circumferentially inside the first circumferential positioning ring, and a gap between every two adjacent long teeth forms a first permanent magnet mounting slot.

7. The surface-mount permanent magnet installation and positioning tool according to claim 4, characterized in that: The circumferential positioning assembly further includes a second circumferential positioning ring, a third outer stop formed on one side of the second circumferential positioning ring to cooperate with the inner stop, and a fourth through groove formed on the outer wall of the second circumferential positioning ring axially extending through the second circumferential positioning ring, the fourth through groove corresponding to the first through groove and the second through groove respectively; Second permanent magnet mounting grooves are regularly formed inside the second circumferential positioning ring along the circumference.

8. The surface-mount permanent magnet installation and positioning tool according to claim 1, characterized in that: The axial push rod assembly includes a fixed plate and a push rod, wherein the fixed plate is composed of two symmetrical arc-shaped plates, each of which has a connecting hole formed at both ends, and the two arc-shaped plates are detachably connected to the fixed surface through the connecting holes; Each of the arc-shaped plates is formed with a through hole, and the push rod is arranged through the through hole.

9. The surface-mount permanent magnet installation and positioning tool according to claim 5, characterized in that: The radial fixing assembly is an annular structure, and the annular structure is formed with a tightening hole for inserting a tightening bolt and a third observation hole corresponding to the first observation hole and the second observation hole respectively.

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