Motor rotor pressing and fastening tool and pressing device

Abstract

The utility model belongs to the technical field of motor rotor manufacturing, and discloses a motor rotor pressing and fastening tool and a pressing device. The motor rotor pressing and fastening tool comprises a cover plate and a bottom plate, the cover plate and the bottom plate are detachably and oppositely arranged, a containing space used for containing a rotor is formed between the cover plate and the bottom plate, and the rotor comprises a rotor disc and a plurality of magnetic steel embedded in one side of the rotor disc; the cover plate comprises an aluminum plate and a metal magnetic isolation thin plate which are stacked, the metal magnetic isolation thin plate abuts against the surfaces of the multiple pieces of magnetic steel, and the hardness of the metal magnetic isolation thin plate is larger than that of the aluminum plate. The metal magnetic isolation thin plate is arranged on the side, close to the magnetic steel, of the aluminum plate, so that the metal magnetic isolation thin plate directly abuts against the surface of each magnetic steel, the hardness of the metal magnetic isolation thin plate is higher, the problem of material damage caused by scraping is reduced, the problem that the aluminum plate is scratched to damage materials due to the fact that the aluminum plate directly abuts against the magnetic steel is avoided, and the metal magnetic isolation thin plate has a magnetic isolation effect; and the problem that the cover plate is not easy to open due to attraction with the magnetic steel can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of motor rotor manufacturing, in particular to a pressing and fastening tooling for a motor rotor and a pressing device. Background Art

[0002] An axial magnetic field motor, also known as a disc motor, has the advantages of small axial dimension, high torque density, high power density, and high efficiency, and is widely used in fields such as electric vehicles, general industry, and household appliances. From the current structure of the disc motor rotor, the magnetic steel is a single-piece design, and the single-piece magnetic steel is arranged according to the NS poles and bonded to the rotor disc with glue. During the manufacturing process of the motor rotor, glue needs to be applied to the rotor disc first, and then each magnetic steel is pressed onto the rotor disc through a pressing and fastening tooling, and then placed in a curing furnace for glue curing. For the existing pressing and fastening tooling, the rotor needs to be placed between a cover plate and a bottom plate, and the cover plate is pressed on the surface of the magnetic steel. In order to achieve the magnetic isolation effect, the existing cover plate is usually made of aluminum plate. However, the hardness of the aluminum plate is relatively low, and the surface strength is insufficient. If it is in direct contact with the magnetic steel, the surface of the aluminum plate is easily scratched and damaged by the magnetic steel under the action of the pressing force.

[0003] Therefore, there is an urgent need to provide a pressing and fastening tooling for a motor rotor and a pressing device to solve the above problems. Summary of the Utility Model

[0004] One object of the utility model is to provide a pressing and fastening tooling for a motor rotor, which can solve the technical problem of the aluminum plate being scratched and damaged by contact with the magnetic steel.

[0005] Another object of the utility model is to provide a pressing device, which can drive the cover plate to move through a pressing mechanism, realize automatic pressing of the cover plate, improve the degree of automation, and save labor costs.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The pressing and fastening tooling for a motor rotor includes:

[0008] A cover plate and a bottom plate, which are detachably arranged opposite to each other, and a receiving space for placing the rotor is formed between the cover plate and the bottom plate. The rotor includes a rotor disc and a plurality of magnetic steels embedded on one side of the rotor disc;

[0009] The cover plate includes a stacked aluminum plate and a metal magnetic isolation thin plate, the metal magnetic isolation thin plate is pressed against the surfaces of the plurality of magnetic steels, and the hardness of the metal magnetic isolation thin plate is greater than that of the aluminum plate.

[0010] As an optional solution, the metal magnetic isolation thin plate is a stainless steel thin plate. The stainless steel thin plate is convenient to obtain materials, and has relatively high hardness and strength, and also has a magnetic isolation effect.

[0011] As an alternative solution, the metal magnetic isolation thin plate is connected to the aluminum plate through a plurality of fasteners, and the metal magnetic isolation thin plate is floatingly arranged. With this arrangement, the metal magnetic isolation thin plate can have a certain moving space, enabling it to come into contact with all the magnetic steels as much as possible, with more sufficient contact, so that each magnetic steel is evenly pressed.

[0012] As an alternative solution, the fasteners are equal-height screws.

[0013] As an alternative solution, the cover plate further includes a steel plate, and the steel plate is stacked on the side of the aluminum plate away from the bottom plate. By stacking the steel plate on the aluminum plate, deformation of the aluminum plate can be avoided, and the overall structural strength of the cover plate is improved.

[0014] As an alternative solution, the thickness of the steel plate is less than the thickness of the aluminum plate. This setting takes into account both cost and overall weight on the premise that the steel plate provides sufficient support and the aluminum plate meets the magnetic isolation requirements.

[0015] As an alternative solution, at least two positioning pins are provided on the side of the aluminum plate close to the bottom plate, positioning holes are opened on the rotor disc at positions corresponding to the positioning pins, and each positioning pin is inserted and matched with the corresponding positioning hole. Through the insertion and matching of the positioning pins and the positioning holes, the rotor disc can be prevented from moving when the rotor disc is pressed, thus ensuring the pressing and curing effect.

[0016] As an alternative solution, a centering ring protrudes from the center of the side of the aluminum plate close to the bottom plate. Along the direction close to the bottom plate, the centering ring is higher than the positioning pins, and a center hole for insertion and matching with the centering ring is provided at the center of the rotor disc. Before the positioning pins are inserted into the positioning holes, the centering ring is first inserted into the center hole, thereby performing an initial positioning of the positions of the positioning pins to facilitate the subsequent matching of the positioning pins and the positioning holes.

[0017] In an alternative embodiment, a plurality of locking components are further included. The plurality of locking components penetrate through the cover plate and are detachably connected to the bottom plate. Four of the locking components respectively penetrate through the four corner positions of the aluminum plate, and notches are respectively provided at the four corners of the metal magnetic isolation thin plate to avoid the locking components. This can prevent too many holes from being opened on the metal magnetic isolation thin plate and affecting its structural strength.

[0018] A pressing device includes a downward pressing mechanism and the above-mentioned motor rotor pressing and curing tooling. The downward pressing mechanism is used to drive the cover plate to move in a direction close to the bottom plate to press the rotor.

[0019] The beneficial effects of the present utility model:

[0020] The utility model provides a motor rotor pressing and fastening tooling. By arranging a metal magnetic isolation thin plate on one side of the aluminum plate close to the magnetic steel, the metal magnetic isolation thin plate directly presses against the surfaces of the magnetic steels. The metal magnetic isolation thin plate has a greater hardness, reducing the problem of scraping and material loss, avoiding the aluminum plate directly pressing against the magnetic steel and causing scraping and material loss of the aluminum plate. The metal magnetic isolation thin plate also has a magnetic isolation effect and can also prevent it from being attracted to the magnetic steel and making it difficult to open the cover plate.

[0021] The utility model also provides a pressing device, including a downward pressing mechanism and the above-mentioned motor rotor pressing and fastening tooling. By driving the cover plate to move through the downward pressing mechanism, automatic pressing of the cover plate can be achieved, improving the degree of automation and saving labor costs. Description of the Drawings

[0022] Figure 1 is an explosion view of the motor rotor pressing and fastening tooling provided by the utility model Figure 1 ;

[0023] Figure 2 is a cross-sectional view of the motor rotor pressing and fastening tooling provided by the utility model;

[0024] Figure 3 is an explosion view of the motor rotor pressing and fastening tooling provided by the utility model Figure 2 ;

[0025] Figure 4 is a structural schematic diagram of the locking assembly provided by the utility model.

[0026] In the figure:

[0027] 100, rotor; 101, rotor disc; 1011, central hole; 1012, positioning hole; 102, magnetic steel;

[0028] 10, cover plate; 11, steel plate; 12, aluminum plate; 13, metal magnetic isolation thin plate; 14, fastener; 15, centering ring; 16, positioning pin;

[0029] 20, bottom plate; 21, limiting groove; 22, lock hole; 221, round hole; 222, strip hole; 23, accommodating groove;

[0030] 30, elastic pressing assembly; 31, pressing member; 311, pressing block; 312, limiting portion; 313, limiting boss; 32, elastic member;

[0031] 40, locking assembly; 41, locking rod; 411, rod portion; 412, locking pin; 42, rotating handle; 43, limiting guide sleeve; 431, limiting protrusion; 432, limiting groove; 44, limiting pin; 45, gasket;

[0032] 50, accommodating space. Detailed Embodiments

[0033] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the accompanying drawings.

[0034] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "beneath", and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0036] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0037] This embodiment provides a motor rotor pressing and fastening tooling for pressing the rotor 100. Among them, the rotor 100 is the rotor of an axial magnetic field motor, which includes a rotor disk 101 and a plurality of magnetic steel 102 embedded on one side of the rotor disk 101. The plurality of magnetic steel 102 are arranged according to the NS poles and are bonded to the rotor disk 101 by glue. During the manufacturing process of the rotor 100, glue needs to be applied to the rotor disk 101 first, and then each magnetic steel 102 is pressed onto the rotor disk 101 through this motor rotor pressing and fastening tooling, and then placed in a curing furnace for curing the glue.

[0038] Specifically, as Figures 1 to 3 shown, the motor rotor pressing and fastening tooling includes a cover plate 10, a bottom plate 20, and a locking assembly 40. The cover plate 10 and the bottom plate 20 are oppositely arranged, and the cover plate 10 and the bottom plate 20 are detachably connected through the locking assembly 40. An accommodation space 50 for placing the rotor 100 is formed between the cover plate 10 and the bottom plate 20. The cover plate 10 includes an aluminum plate 12 and a metal magnetic isolation thin plate 13 stacked on each other. The metal magnetic isolation thin plate 13 presses against the surfaces of a plurality of magnetic steel 102, and the hardness of the metal magnetic isolation thin plate 13 is greater than that of the aluminum plate 12.

[0039] By arranging the metal magnetic isolation thin plate 13 on the side of the aluminum plate 12 close to the magnetic steel 102, the metal magnetic isolation thin plate 13 directly presses against the surfaces of the magnetic steels 102. The metal magnetic isolation thin plate 13 has a greater hardness, reducing the problem of scraping and material loss, and avoiding the aluminum plate 12 being scraped and damaged due to directly pressing against the magnetic steel 102. The metal magnetic isolation thin plate 13 also has a magnetic isolation effect and can also prevent the cover plate 10 from being not easily opened due to being attracted to the magnetic steel 102.

[0040] In an optional embodiment, the metal magnetic isolation thin plate 13 is a stainless steel thin plate. The stainless steel thin plate is convenient to obtain materials, and has relatively high hardness and strength, and also has a magnetic isolation effect. In other embodiments, the metal magnetic isolation thin plate 13 can also select other materials with relatively high hardness and good magnetic isolation effect, and no specific limitation is made here.

[0041] In an optional embodiment, as Figure 3 shown, the edge of the metal magnetic isolation thin plate 13 is fixed on the aluminum plate 12 through a plurality of fasteners 14. The fasteners 14 can be selected as equal-height screws, which can provide a more uniform pressure distribution. However, the equal-height screws are not in a completely locked state, but there is a certain gap, so that the metal magnetic isolation thin plate 13 can be floatingly arranged in its own plane and along the axial direction of the equal-height screws. Such a setting can enable the metal magnetic isolation thin plate 13 to have a certain moving space, so that the metal magnetic isolation thin plate 13 can try to contact all the magnetic steels 102, and the contact is more sufficient, thereby making the pressure on each magnetic steel 102 uniform.

[0042] It can be seen from Figure 3 that the thickness of the metal magnetic isolation thin plate 13 is very thin. Considering both cost and its own weight, in the case of being very thin itself, the bending deformation amount of the metal magnetic isolation thin plate 13 can even be ignored. The specific thickness of the metal magnetic isolation thin plate 13 is not specifically limited here and can be flexibly set on the premise of meeting the actual requirements.

[0043] In an optional embodiment, as Figures 1 to 3As shown, the cover plate 10 further includes a steel plate 11 which is stacked on the side of the aluminum plate 12 away from the bottom plate 20, and the steel plate 11 is fixedly connected to the aluminum plate 12. Since the structural strength of the aluminum plate 12 is relatively low and it is prone to deformation, and the magnet 102 is a strong magnet with a large magnetic force, the combined magnetic force and the pressing force of the locking assembly 40 cannot be borne by the single aluminum plate 12 alone, while the single steel plate 11 will be attracted by the magnet 102, resulting in the cover plate 10 not being easily opened after the tooling is used. Therefore, by stacking the steel plate 11 on the aluminum plate 12, the pressing force of the locking assembly 40 is applied to the steel plate 11, avoiding the deformation of the aluminum plate 12 and improving the overall structural strength of the cover plate 10. And the aluminum plate 12 is arranged between the steel plate 11 and the magnet 102, which can play a role in magnetic isolation and prevent the steel plate 11 from being attracted by the magnet 102 and causing the cover plate 10 not to open.

[0044] As Figures 1 to 3 shown, the thickness of the steel plate 11 is less than that of the aluminum plate 12. This setting takes into account both the cost and the overall weight while providing sufficient support by the steel plate 11 and meeting the magnetic isolation requirements by the aluminum plate 12. The specific thicknesses of the steel plate 11 and the aluminum plate 12 are not specifically limited herein and can be flexibly set on the premise of meeting the actual requirements.

[0045] In an optional embodiment, as Figures 1 to 3 shown, two symmetric positioning pins 16 are provided on the side of the aluminum plate 12 close to the bottom plate 20, and positioning holes 1012 are opened at the positions corresponding to the positioning pins 16 at the center of the rotor disc 101. The positioning pins 16 are in plug-in fit with the positioning holes 1012. Through the plug-in fit of the positioning pins 16 and the positioning holes 1012, the rotor disc 101 can be prevented from moving during the pressing process, thus ensuring the pressing and curing effect. In other embodiments, the number of the positioning pins 16 and the positioning holes 1012 can also be set to three, four or more, and can be flexibly set according to the actual requirements, and are not specifically limited herein.

[0046] In an optional embodiment, as Figure 2 and Figure 3 shown, a centering ring 15 is fixedly connected to the center of the side of the aluminum plate 12 close to the bottom plate 20. Two symmetric lugs are provided on the circumferential side of the centering ring 15, and the above-mentioned positioning pins 16 are protruded on each lug. Along the direction close to the bottom plate 20, the centering ring 15 is higher than the positioning pins 16. An avoidance hole for avoiding the centering ring 15 is opened at the center of the metal magnetic isolation thin plate 13, and a center hole 1011 for plug-in fit with the centering ring 15 is provided at the center of the rotor disc 101. Before the positioning pins 16 are inserted into the positioning holes 1012, the centering ring 15 is first inserted into the center hole 1011, thereby performing an initial positioning on the positions of the positioning pins 16 and facilitating the subsequent cooperation between the positioning pins 16 and the positioning holes 1012.

[0047] As Figure 1 and Figure 2As shown, the motor rotor pressing and solidifying tooling further includes a plurality of elastic pressing components 30. The plurality of elastic pressing components 30 are evenly distributed along the circumferential direction of the rotor 100 and are arranged on the bottom plate 20. One end of each of the plurality of elastic pressing components 30 extends into the accommodation space 50 and elastically presses on the rotor disk 101 simultaneously, and the cover plate 10 presses on the plurality of magnetic steel 102.

[0048] During use, the assembled rotor 100 is placed on the plurality of elastic pressing components 30 on the bottom plate 20 in the manner that the magnetic steel 102 faces the cover plate 10, and then the cover plate 10 is connected to the bottom plate 20, so that the cover plate 10 and the plurality of elastic pressing components 30 cooperate to press the rotor 100 tightly and wait for solidification. Among them, the rotor disk 101 is pressed tightly by the plurality of evenly distributed elastic pressing components 30, the plurality of magnetic steel 102 are pressed tightly by the cover plate 10, and the elastic pressing component 30 and the rotor disk 101 are elastically pressed, which can ensure that each elastic pressing component 30 can contact and press on the rotor disk 101. The plurality of elastic pressing components 30 are evenly distributed along the circumferential direction of the rotor 100, which can ensure that the rotor disk 101 is uniformly pressed as much as possible. The rotor disk 101 presses on each magnetic steel 102, so that each magnetic steel 102 can fully contact with the cover plate 10, and further each magnetic steel 102 is uniformly pressed, improving the height consistency of each magnetic steel 102, which is beneficial to improving the product quality.

[0049] In this embodiment, as Figure 1 shown, the elastic pressing component 30 is set to eight. The eight elastic pressing components 30 are evenly arranged along the circumferential direction of the rotor disk 101 and can press on the rotor disk 101 simultaneously, so as to ensure that the rotor disk 101 is uniformly pressed. In other embodiments, the number of the elastic pressing components 30 can also be set to other numbers, and can be flexibly set according to the size of the rotor disk 101 and the number of the magnetic steel 102, and no specific limitation is made here.

[0050] In this embodiment, as Figure 1 and Figure 2 shown, the elastic pressing component 30 includes a pressing member 31 and an elastic member 32. The pressing member 31 passes through the bottom plate 20 movably. One end of the pressing member 31 extends into the accommodation space 50 and can be in contact with the rotor disk 101, and the other end can be in limit cooperation with the bottom surface of the bottom plate 20; a limit groove 21 is formed on the bottom plate 20, the elastic member 32 is accommodated in the limit groove 21 and sleeved outside the pressing member 31, one end of the elastic member 32 abuts against the pressing member 31, and the other end abuts against the bottom of the limit groove 21. Among them, the elastic member 32 can be a rectangular spring, and the rectangular spring has good load-bearing capacity, high stability and durability.

[0051] Refer to Figure 2, when installing the cover plate 10, first press down the cover plate 10. The cover plate 10 applies pressure to the magnet 102 downward, and at the same time, the rotor disk 101 applies pressure to the pressing member 31 downward. The pressing member 31 moves downward and compresses the elastic member 32 until the cover plate 10 is installed in place. The elastic force of the elastic member 32 acting on the pressing member 31 in the reverse direction is the pressing force applied by the pressing member 31 on the rotor disk 101. Through the above settings, under the action of the elastic member 32, it can be ensured that each pressing member 31 can contact and press against the rotor disk 101, ensuring uniform compression of the rotor disk 101, and further ensuring uniform compression of each magnet 102.

[0052] Specifically, as Figure 2 shown, the pressing member 31 includes a connected pressing block 311 and a limiting portion 312. The pressing block 311 extends into the accommodating space 50 and can abut against the rotor disk 101. The outer diameter of the pressing block 311 is larger than the outer diameter of the limiting portion 312. The elastic member 32 is sleeved on the limiting portion 312 and one end thereof abuts against the pressing block 311. That is to say, the pressing block 311 and the bottom of the limiting groove 21 can respectively limit the two free ends of the elastic member 32. The end of the limiting portion 312 away from the pressing block 311 penetrates through the bottom plate 20 and forms a limiting boss 313. The outer diameter of the limiting boss 313 is larger than the outer diameter of the limiting portion 312. The side of the limiting boss 313 close to the limiting portion 312 can abut against the bottom surface of the bottom plate 20. When the rotor 100 is not placed on the pressing member 31, under the elastic force of the elastic member 32, the limiting boss 313 abuts against the bottom surface of the bottom plate 20, avoiding the pressing member 31 disengaging from the bottom plate 20 due to the elastic force.

[0053] Furthermore, the pressing block 311 and the limiting portion 312 are detachably connected by screws. With this setting, it is convenient to install the pressing member 31 on the bottom plate 20. Exemplarily, referring to Figure 2 , during installation, the end of the limiting portion 312 away from the limiting boss 313 can be inserted into the limiting groove 21 from the bottom of the bottom plate 20 first, then the pressing block 311 can be placed on the upper end of the limiting portion 312 from the upper side of the bottom plate 20, and then the screws can be sequentially inserted into the pressing block 311 and the limiting portion 312 from the upper side of the bottom plate 20, and the screws can be tightened.

[0054] As Figure 2 shown, the inner diameter of the limiting groove 21 is larger than the outer diameter of the pressing block 311. With this setting, when the rotor disk 101 presses down the pressing block 311, the pressing block 311 can move into the limiting groove 21 and normally compress the elastic member 32, avoiding interference between the pressing block 311 and the bottom plate 20 and affecting the compression of the elastic member 32, and further affecting the pressing force on the rotor disk 101.

[0055] As Figures 1 to 3As shown in the figure, the motor rotor pressing and fastening tooling further includes a locking assembly 40. The locking assembly 40 includes a locking rod 41. The locking rod 41 is rotatably disposed through the cover plate 10 in the circumferential direction. A locking hole 22 for inserting one end of the locking rod 41 is provided on the bottom plate 20. The locking rod 41 can rotate circumferentially in the locking hole 22 to lock or unlock with the bottom plate 20. During the installation of the cover plate 10, the locking rod 41 on the cover plate 10 passes through the locking hole 22. At the same time, the cover plate 10 compresses the elastic member 32 by pressing against the rotor 100. After the cover plate 10 reaches the preset position, by rotating the locking rod 41, it can be fixed in the locking hole 22, realizing the locking of the locking rod 41 and the bottom plate 20, thereby realizing the fixed connection between the cover plate 10 and the bottom plate 20 to press the rotor 100 tightly; when disassembling the cover plate 10, only need to rotate the locking rod 41 in the reverse direction, and the locking rod 41 can be disengaged from the locking hole 22, realizing the disassembly of the cover plate 10 and the bottom plate 20. By providing the above-mentioned locking assembly 40, the quick installation and disassembly of the cover plate 10 and the bottom plate 20 can be realized, and the operation is convenient and fast.

[0056] Specifically, as Figures 1 to 4 shown, the locking rod 41 includes a rod portion 411 and a locking pin 412. The rod portion 411 is disposed through the cover plate 10. The rod portion 411 is axially fixed on the cover plate 10 and can rotate circumferentially relative to the cover plate 10. The locking pin 412 is connected to one end of the rod portion 411 close to the bottom plate 20 and penetrates through the rod portion 411 in the radial direction. The two free ends of the locking pin 412 respectively protrude from the circumferential side of the rod portion 411. The rod portion 411 can rotate circumferentially in the locking hole 22 so that the locking pin 412 can switch between a position facing the locking hole 22 and a position avoiding the locking hole 22. Among them, both the rod portion 411 and the locking pin 412 can be selected as cylindrical rods. The two free ends of the locking pin 412 respectively protrude from the circumferential side of the rod portion 411, so that the locking pin 412 and the rod portion 411 are configured into a T-shaped structure. The locking rod 41 of this form has a simple structure and can be well limited and matched with the locking hole 22 to prevent it from coming out of the locking hole 22.

[0057] Among them, the end face shape of the locking hole 22 is adapted to that of the locking rod 41. Specifically, as Figure 1As shown in the figure, the keyhole 22 includes a circular hole 221 and strip-shaped holes 222 symmetrically connected to both sides of the circular hole 221. The circular hole 221 is adapted to the rod portion 411, and the two strip-shaped holes 222 are adapted to the locking pins 412. When installing the cover plate 10, first ensure that the rod portion 411 is aligned with the circular hole 221, and the locking pins 412 are aligned with the strip-shaped holes 222. Then press down the cover plate 10, so that the locking rod 41 can extend into the keyhole 22 of the bottom plate 20, and the locking pins 412 pass through to the other side of the bottom plate 20. Then rotate the rod portion 411 axially, so that the locking pins 412 rotate to a position avoiding the strip-shaped holes 222 and are axially limited to one side of the bottom plate 20. At this time, the cover plate 10 is locked with the bottom plate 20 through the locking rod 41. When it is necessary to remove the cover plate 10, just rotate the rod portion 411 in the reverse direction, so that the locking pins 412 are aligned with the strip-shaped holes 222, and the cover plate 10 and the bottom plate 20 can be unlocked. The structure of the locking rod 41 is simple and stable, the operation is convenient, which is convenient for the rapid assembly and disassembly of the cover plate 10 and the bottom plate 20. At the same time, during the rotation locking process, it can ensure that the magnetic steel 102 is axially stressed evenly and is not affected by radial force.

[0058] It should be noted that during the process of pressing down the cover plate 10 under external pressure, when the rectangular spring is completely compressed, the locking rod 41 can be smoothly locked into the keyhole 22. When the external pressure is withdrawn, the rectangular spring extends a certain length and tightens the locking rod 41 to keep the magnetic steel 102 under pressure.

[0059] As Figure 1 shown, a rotating handle 42 is connected to one end of the locking rod 41 away from the bottom plate 20. The operator can drive the locking rod 41 to rotate by rotating the rotating handle 42, so as to realize the locking and unlocking of the locking rod 41, and the operation is convenient. The rotating handle 42 and the locking rod 41 can be fixedly connected by interference fit, threaded connection, snap connection and other methods, and no specific limitation is made here.

[0060] In an optional embodiment, as Figure 1 and Figure 2 shown, the locking assembly 40 further includes a limiting guide sleeve 43. The limiting guide sleeve 43 is inserted through the cover plate 10. One side of the limiting guide sleeve 43 away from the bottom plate 20 abuts against the surface of the cover plate 10 and is fixedly connected to the cover plate 10 by screws. The locking rod 41 passes through the limiting guide sleeve 43 and can rotate circumferentially within the inner circumference of the limiting guide sleeve 43. The lower surface of the rotating handle 42 abuts against the upper surface of the limiting guide sleeve 43. The strength of the limiting guide sleeve 43 is higher than that of the cover plate 10, and it rotates in cooperation with the locking rod 41 to prevent the locking rod 41 from rotating in cooperation with the cover plate 10 for a long time and causing wear and deformation of the cover plate 10.

[0061] In an optional embodiment, as Figure 4As shown, at one end of the limit guide sleeve 43 away from the rotating handle 42, two oppositely arranged limit protrusions 431 protrude. A limit groove 432 is formed between the two limit protrusions 431. The locking assembly 40 further includes a limit pin 44. The limit pin 44 is connected to the rod portion 411 and penetrates the rod portion 411 in the radial direction. The two free ends of the limit pin 44 respectively protrude from the circumferential side of the rod portion 411. Each limit pin 44 is respectively located in the corresponding limit groove 432 and can respectively abut against the two limit protrusions 431. By rotating the locking rod 41 clockwise and counterclockwise along the axis, the limit pin 44 can be driven to rotate in the limit groove 432. When the limit pin 44 respectively abuts against the two limit protrusions 431, it indicates that the locking pins 412 respectively reach two rotation limit positions. The two limit positions are respectively the position where the locking pin 412 is opposite to the strip hole 222 and the position perpendicular to the strip hole 222, that is, the unlocking position and the locking position of the locking rod 41. Secondly, the limit pin 44 abuts and cooperates with the bottom of the limit groove 432, which can limit the upward movement of the locking rod 41 in the axial direction. The rotating handle 42 abuts and cooperates with the limit guide sleeve 43, which can limit the downward movement of the locking rod 41 in the axial direction, thereby limiting the axial movement of the locking rod 41.

[0062] In an alternative embodiment, as Figure 2 and Figure 3 shown, the locking assembly 40 further includes a gasket 45. A receiving groove 23 is formed on the side of the bottom plate 20 away from the cover plate 10. The receiving groove 23 communicates with the lock hole 22. The gasket 45 is arranged in the receiving groove 23 and fixed to the bottom of the receiving groove 23 by screws. A hole for the locking rod 41 to pass through is formed on the gasket 45, and the shape of the hole is the same as that of the lock hole 22. When the locking pin 412 is located at the position avoiding the strip hole 222, the locking pin 412 abuts against the gasket 45. The gasket 45 is preferably a steel gasket, and its strength is greater than that of the bottom plate 20, so as to prevent the locking pin 412 from contacting the bottom plate 20 for a long time and causing wear and deformation of the bottom plate 20.

[0063] In this embodiment, as Figure 1 shown, five locking assemblies 40 are provided. One of the locking assemblies 40 is arranged at the center position of the cover plate 10, passes through the rotor disc 101 and cooperates with the lock hole 22 at the center of the bottom plate 20. The remaining four locking assemblies 40 are arranged at the four corner positions of the cover plate 10 and cooperate with the lock holes 22 at the four corners of the bottom plate 20. Such a setting can ensure that the cover plate 10 is uniformly stressed and will not deform. At the same time, the axial forces of the permanent magnets 102 can be ensured to be uniform during the rotation and locking process. In other embodiments, the number of the locking assemblies 40 can also be set to other numbers, which can be flexibly set according to actual needs and will not be specifically limited here.

[0064] Specifically, as Figure 3As shown in the figure, the locking rod 41 penetrates through the steel plate 11 and the aluminum plate 12. Notches are respectively provided at the four corners of the metal magnetic isolation thin plate 13 to avoid the locking rod 41 of the locking assembly 40. Among them, the notches are roughly fan-shaped notches, which are directly formed during the processing of the metal magnetic isolation thin plate 13, so as to avoid opening too many round holes on the metal magnetic isolation thin plate 13 and affecting its structural strength and processing efficiency.

[0065] This embodiment also provides a pressing device, which includes a downward pressing mechanism (not shown) and the above-mentioned motor rotor pressing and fastening tooling. The downward pressing mechanism is used to drive the cover plate 10 to move towards the bottom plate 20 to press the rotor 100. By driving the cover plate 10 to move downward through the downward pressing mechanism, automatic pressing of the cover plate 10 can be achieved, improving the degree of automation and saving labor costs.

[0066] Among them, the downward pressing mechanism is similar to a common press in the prior art. It mainly includes a frame, a linear driving structure fixed on the frame, and a downward pressing member connected to the output end of the linear driving structure. The downward pressing member can be a plate-like structure or a columnar structure. Place the pre-assembled motor rotor pressing and fastening tooling on the tabletop of the frame, and then the linear driving structure drives the downward pressing member to move downward. The downward pressing member applies pressure to the cover plate 10, and the cover plate 10 moves downward to compress the elastic member 32. At the same time, the locking rod 41 can be smoothly locked into the lock hole 22. Then, the linear driving structure drives the downward pressing member to reset. The linear driving structure can be a linear driving structure such as a cylinder, a hydraulic cylinder or a linear module, and no specific limitation is made here. The specific structure of the downward pressing mechanism is relatively common in the prior art and will not be elaborated here.

[0067] In an optional embodiment, rotary cylinders can be respectively arranged at the positions of the downward pressing member corresponding to each locking assembly 40. The output end of the rotary cylinder can be detachably connected to the rotating handle 42. When the downward pressing member presses the cover plate 10 to a preset position, the rotary cylinder is connected to the rotating handle 42 and drives the rotating handle 42 to rotate. The rotating handle 42 drives the locking rod 41 to rotate, so as to lock the locking rod 41 in the lock hole 22. Such a setting can achieve automatic pressing and locking of the cover plate 10, improve the degree of automation and save labor costs. Of course, the rotating handle 42 can also be manually screwed.

[0068] In an optional embodiment, the detachable connection between the rotary cylinder and the rotating handle 42 can be realized through the cooperation of a protrusion and a groove. That is to say, when the downward pressing member contacts the cover plate 10, the protrusion at the output end of the rotary cylinder just inserts into the groove on the rotating handle 42, or the groove at the output end of the rotary cylinder just sleeves outside the protrusion on the rotating handle 42, realizing the circumferential limit between the rotary cylinder and the rotating handle 42. The output end of the rotary cylinder can drive the rotating handle 42 to rotate, and the connection between the output end of the rotary cylinder and the rotating handle 42 is convenient and fast.

[0069] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present utility model. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. The motor rotor pressing and curing tooling is characterized by: include: A cover plate (10) and a bottom plate (20) are detachably arranged opposite to each other, and a receiving space (50) for placing a rotor (100) is formed between the cover plate (10) and the bottom plate (20), wherein the rotor (100) comprises a rotor disk (101) and a plurality of magnetic steels (102) embedded in one side of the rotor disk (101); The cover plate (10) comprises a stacked aluminum plate (12) and a metal magnetic isolation plate (13), wherein the metal magnetic isolation plate (13) is pressed against the surface of the plurality of magnetic steels (102), and the hardness of the metal magnetic isolation plate (13) is greater than the hardness of the aluminum plate (12).

2. The motor rotor pressing and curing tooling according to claim 1 is characterized in that: The metal magnetic isolation thin plate (13) is a stainless steel thin plate.

3. The motor rotor pressing and curing tooling according to claim 1 is characterized in that: The metal magnetic isolation plate (13) is connected to the aluminum plate (12) via a plurality of fasteners (14), and the metal magnetic isolation plate (13) is arranged in a floating manner.

4. The motor rotor pressing and curing tooling according to claim 3 is characterized in that: The fastener (14) is a screw of equal height.

5. The motor rotor pressing and curing tool according to any one of claims 1 to 4, characterized in that: The cover plate (10) further comprises a steel plate (11), wherein the steel plate (11) is stacked on a side of the aluminum plate (12) away from the bottom plate (20).

6. The motor rotor pressing and curing tooling according to claim 5 is characterized in that: The thickness of the steel plate (11) is smaller than the thickness of the aluminum plate (12).

7. The motor rotor pressing and curing tool according to any one of claims 1 to 4, characterized in that: At least two positioning pins (16) are arranged on one side of the aluminum plate (12) close to the bottom plate (20); positioning holes (1012) are opened on the rotor disk (101) at positions corresponding to the positioning pins (16); and each positioning pin (16) is plug-fitted into the corresponding positioning hole (1012).

8. The motor rotor pressing and curing tooling according to claim 7 is characterized in that: A centering ring (15) is protrudingly provided at the center of one side of the aluminum plate (12) close to the base plate (20); along the direction close to the base plate (20), the centering ring (15) is higher than the positioning pin (16); and a center hole (1011) that is plugged into and fits with the centering ring (15) is provided at the center of the rotor disk (101).

9. The motor rotor pressing and curing tool according to any one of claims 1 to 4, characterized in that: It also includes a plurality of locking components (40), wherein the plurality of locking components (40) are inserted through the cover plate (10) and are detachably connected to the base plate (20), wherein four of the locking components (40) are respectively inserted through the four corners of the aluminum plate (12), and the four corners of the metal magnetic isolation plate (13) are respectively provided with notches to avoid the locking components (40).

10. The clamping device is characterized in that: It comprises a pressing mechanism and a motor rotor pressing and curing tool as claimed in any one of claims 1 to 9, wherein the pressing mechanism is used to drive the cover plate (10) to move towards the bottom plate (20) to press the rotor (100).

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