A surface mounted rotor magnetic steel bonding tool and magnetic steel bonding method

Abstract

The present invention discloses a surface mounted rotor magnetic steel bonding tool, including a positioning tool for magnetic steel positioning and a fixing tool for magnetic steel installation. The positioning tool includes a magnetic steel bonding end plate, a magnetic steel bonding splint, and a positioning pin. The magnetic steel bonding end plate is positioned and installed on both ends of the rotor, and the magnetic steel bonding splint is positioned and installed on the magnetic steel bonding end plate; a magnetic steel positioning area for positioning a row of magnetic steel is formed between the abutment surface between the magnetic steel bonding splint and the outer cylindrical surface of the rotor; the fixing tool includes a magnetic steel placeholder, a magnetic steel hoop, a pressure block, and a locking part, and a magnetic steel installation area for installing a row of magnetic steel is formed between the magnetic steel placeholder and the adjacent magnetic steel. The present invention also discloses a magnetic steel bonding tool method. The present invention is easy to use, accurate in positioning, firm in magnetic steel bonding, magnetic steel glue is not easy to extrude, and the surface of the magnetic steel after bonding is clean and tidy; and the structure is simple, and it can replace the automated tooling equipment in the early stage, and is suitable for use in small batch production.

Description

Technical Field

[0001] The invention belongs to the technical field of motor rotor assembly tooling, and in particular relates to a surface mounted rotor magnetic steel bonding tooling and a magnetic steel bonding method. Background Art

[0002] The motor rotor is the rotating part of the motor. The motor consists of two parts, the rotor and the stator. It is a device used to realize the conversion of electrical energy into mechanical energy and mechanical energy into electrical energy. The rotation mode of the motor rotor is that the core in the middle of the motor is a rotating body, outputting torque (referring to the motor) or receiving energy (referring to the generator). Magnets are bonded in the circumferential direction of the motor rotor, which is called a surface mount rotor. The existing motor surface mount rotors on the market generally have magnet mounting grooves reserved on the outer surface of the rotor. The magnets only need to be embedded in them to position the magnets; at the same time, the polarities of adjacent magnets in the circumferential direction are opposite, attracting each other, which is conducive to installation. In the development process of motor surface mount rotors, surface mount rotors without magnet mounting grooves and with adjacent magnets of the same polarity in the circumferential direction of the rotor core have also appeared. For this type of surface mount rotor, it is necessary to find and develop a surface mount rotor tooling without magnet mounting grooves and with adjacent magnets of the same polarity in the circumferential direction of the rotor core.

[0003] In order to solve the rotor surface mounting process without magnetic steel installation grooves, Chinese patent CN106972711A applied for an invention patent with application number 201710344908.8 on May 16, 2017, and the patent name is "Magnet introduction tooling and introduction method for surface-mounted high-speed permanent magnet motor" (hereinafter referred to as "comparative document 1"). The magnet introduction tooling of this patent includes: a base, a pressure cover, a first introduction tooling, and a second introduction tooling. The base is provided with a vertical protrusion whose radial distance matches the inner diameter of the rotor. The rotor to be introduced with the magnet is aligned with the protrusion of the base and is placed on the protrusion; the pressure cover is arranged above the base and fixes the rotor, and the pressure cover is connected to the base by a long screw; the first introduction tooling is placed adjacent to the base and placed on the outside of the rotor to be introduced with the magnet, and the second introduction tooling is placed adjacent to the first introduction tooling and placed on the outside of the rotor. With reference to the specification and illustrations of comparative document 1, it can be known that the technical solution of comparative document 1 is applicable to a rotor with multiple facets on the outside, and the outside of the rotor has a platform for magnetic steel fitting and positioning. The boss of the tooling cooperates with the platform on the outside of the rotor to position the magnetic steel, and the magnetic steel is installed and positioned by forming a magnetic steel installation groove through the groove on the tooling. Moreover, the technical solution of comparative document 1 is only applicable to a rotor with a central through hole.

[0004] Therefore, in the process of realizing the present invention, the inventors found that the prior art has at least the following problems: 1. Most of the existing surface-mounted rotor magnet bonding tooling is suitable for a rotor with a certain magnet mounting platform on the outside of the rotor, which can directly provide direct positioning for the magnet installation position, but is not suitable for a curved surface on the outside of the rotor without a magnet mounting platform; 2. For surface-mounted rotors without magnet mounting grooves, adjacent magnets with the same polarity in the circumferential direction repel each other, which causes difficulties in magnet positioning and installation; 3. The rotor structure applicable to the existing magnet bonding tooling is fixed. For example, the tooling in Comparative Document 1 is only applicable to rotors with a central through hole, and some tooling is applicable to rotors without through holes, and requires a corresponding positioning structure on the surface where the magnet is installed, and its scope of application is narrow.

[0005] In view of this, how to solve the problem that the outer surface of the surface-mounted magnetic steel rotor has no installation grooves and positioning platforms, the adjacent magnetic steels in the circumferential direction have the same polarity, there is a repulsive force, and the positioning and installation of the magnetic steel are difficult, has become the subject to be studied and solved by the present invention. Summary of the invention

[0006] The present invention provides a surface mounted rotor magnet bonding tool, the purpose of which is to solve the problem that the outer surface of the surface mounted magnetic rotor has no installation grooves and positioning platforms, the adjacent magnetic steels in the circumferential direction have the same polarity, and there is a repulsive force, which leads to difficulties in positioning and installing the magnetic steel. This patent proposes a surface mounted rotor magnet bonding tool suitable for this type of surface mounted rotor magnet.

[0007] To achieve the above-mentioned purpose, the first aspect of the present invention proposes a surface mounted rotor magnetic steel bonding tool, wherein the rotor has a circumferential surface for bonding magnetic steel, and the circumferential direction of the rotor circumferential surface is divided into an N-pole installation area and an S-pole installation area, and the two ends of the rotor have positioning holes, and the innovation point is that: the magnetic steel bonding tool includes a positioning tool for magnetic steel positioning and a fixing tool for magnetic steel installation;

[0008] The positioning tooling includes a magnetic steel bonding end plate, a magnetic steel bonding clamping plate, and a positioning pin; wherein,

[0009] The magnetic steel bonding end plate is positioned and installed at both ends of the rotor, and the magnetic steel bonding end plate has an outer edge surface relative to the central axis of the rotor. A pin hole corresponding to the positioning hole is provided on the magnetic steel bonding end plate. When in use, the positioning pin passes through the pin hole and the positioning hole to position and connect the magnetic steel bonding plate to the rotor; a plurality of clamping plate installation grooves arranged at intervals along the circumference of the rotor are provided on the outer edge surface of the magnetic steel bonding end plate, and the length direction of the clamping plate installation groove is parallel to the axial direction of the rotor; the magnetic steel bonding clamping plate is a long strip plate, the middle section of the magnetic steel bonding clamping plate is a backing surface for abutting against the magnetic steel, and the two ends are joints for positioning connection, and the joints at both ends of the magnetic steel bonding clamping plate are positioned and installed in the clamping plate installation groove, and a pair of adjacent magnetic steel bonding clamping plates are provided at at least one position at two positions corresponding to the N pole installation area and the S pole installation area of ​​the rotor, and a magnetic steel positioning area for positioning a row of magnetic steel is formed between the backing surface between the two adjacent magnetic steel bonding clamping plates and the outer cylindrical surface of the rotor;

[0010] The fixing fixture includes a magnetic steel placeholder, a magnetic steel hoop, a pressing block, and a locking portion; wherein,

[0011] When in use, the magnetic steel placeholder and the magnetic steel are arc-shaped components whose center is located on the central axis of the rotor, the arc length of the magnetic steel placeholder is a multiple of the arc length of the magnetic steel, the magnetic steel placeholder is installed on the circumferential surface of the rotor, and a magnetic steel installation area for installing a row of magnetic steels is formed between the magnetic steel placeholder and the adjacent magnetic steels; the magnetic steel hoop has an inner circular surface, and a plurality of grooves corresponding to the positions of the magnetic steels to be bonded to the rotor surface are opened in the annular circumference of the inner circular surface of the magnetic steel hoop, and the pressing block is embedded in the groove, and the pressing block is driven by the locking part to press the magnetic steel and the magnetic steel placeholder in the direction toward the rotor surface.

[0012] To achieve the above object, the second aspect of the present invention provides a magnetic steel bonding method of the surface mounted rotor magnetic steel bonding tooling described in the first aspect, and the magnetic steel bonding method comprises the following steps:

[0013] S100, aligning the pin holes of the two magnetic steel bonding end plates with the positioning holes, and positioning and installing the magnetic steel bonding end plates at both ends of the rotor by using the positioning pins;

[0014] S200, embed the magnetic steel bonding clamping plate into the clamping plate installation groove on the outer circumferential surface of the magnetic steel bonding end plate, wherein a pair of adjacent magnetic steel bonding clamping plates are located in the N-pole installation area, and a pair of adjacent magnetic steel bonding clamping plates are located in the S-pole installation area, and a magnetic steel positioning area for positioning a column of magnetic steel is formed between the two adjacent magnetic steel bonding clamping plates and the outer circumferential surface of the rotor; a column of N-pole magnetic steel is installed in the middle of a pair of adjacent magnetic steel bonding clamping plates located in the N-pole installation area and bonded with magnetic steel glue, and the column of magnetic steel is used as the positioning reference magnetic steel, and a column of S-pole magnetic steel is installed in the middle of a pair of adjacent magnetic steel bonding clamping plates located in the S-pole installation area and bonded with magnetic steel glue, and the column of magnetic steel is used as the positioning reference magnetic steel;

[0015] S300, after the positioning reference magnetic steel is solidified, disassemble the bonding clamp plate and the magnetic steel bonding end plate, install the magnetic steel placeholder block, magnetic steel hoop, and pressure block, align the pressure block at the position corresponding to the positioning reference magnetic steel, and install the remaining circumferential magnetic steel;

[0016] S400, using the number of magnetic steels required to be installed between the two positioning reference magnetic steels minus one as the specification of the magnetic steel placeholder, abutting one end of the magnetic steel placeholder in the circumferential direction against one column of the positioning reference magnetic steels, leaving the other side empty, forming a column of magnetic steel installation areas for magnetic steel installation between the empty side and the other column of the positioning reference magnetic steels, and locking and fixing the magnetic steel and the magnetic steel placeholder by using a magnetic steel hoop, a pressure block and a locking portion;

[0017] S500, bonding the magnet to the magnet installation area with magnet glue, and after the magnet solidifies, releasing the locking part, moving the pressing block to the installation position of the next magnet and pressing the magnet tightly;

[0018] S600. After one row of magnets is installed and fixed, take out the magnet placeholders, and use the number of magnets required to be installed between the two positioning reference magnets minus two as the specification of the magnet placeholders to install the next row of magnets, and repeat the above steps S500 and S600 by selecting the specifications of the magnet placeholders minus one order of magnitude, until the bonding of the last row of magnets is completed.

[0019] The relevant contents of the present invention are explained as follows:

[0020] 1. In the above-mentioned surface mount rotor magnet bonding tooling technical solution, a positioning tooling for magnet positioning and a fixing tooling for magnet installation are designed to complete the magnet bonding operation of the surface mount rotor. It is suitable for surface mount rotors without magnet installation slots or adjacent magnets with the same polarity, which are difficult to position and install. The positioning tooling cooperates with the rotor to complete the positioning of each row of magnets in the N-pole installation area and the S-pole installation area, so that the magnets can be accurately positioned on the smooth outer cylindrical surface of the rotor, ensuring that the N-pole and S-pole magnets can be installed in place, and it is no longer required to be on the fitting surface of the rotor. A magnetic steel installation groove or a magnetic steel installation platform is set on the top; after the positioning reference of the magnetic steel is determined, the remaining magnetic steels are installed in rows by the fixed tooling. In the fixed tooling, a magnetic steel placeholder is used. The magnetic steel placeholder and the adjacent magnetic steel form a magnetic steel installation area for installing a row of magnetic steels. The magnetic steels are installed in the magnetic steel installation area one by one, and each installed piece is pressed by a pressure block to ensure that the magnetic steel is fixed in place. Since each magnetic steel is installed in the magnetic steel installation area piece by piece, the structure and angle of the magnetic steel installation area just fit the magnetic steel, so that each piece of magnetic steel can be installed very accurately. The surface-mounted rotor magnetic steel bonding tooling is easy to use, accurate in positioning, firm in magnetic steel bonding, and the magnetic steel glue is not easy to squeeze out. The surface of the magnetic steel is clean and tidy after bonding. The surface-mounted rotor magnetic steel bonding tooling has a simple structure and can replace automated tooling equipment in the early stage. It is suitable for use in small-batch production.

[0021] 2. In the above-mentioned surface-mounted rotor magnet bonding tooling technical solution, there are two positioning holes opened at both ends of the rotor, and the two positioning holes are symmetrically arranged on the surface of the two ends of the rotor. The line connecting the center points of the two positioning holes on the rotor end face is used as the dividing line between the rotor N-pole installation area and the S-pole installation area, thereby reasonably dividing the two poles of the rotor surface-mounted magnets to facilitate the subsequent use of the rotor and to facilitate the symmetrical installation and positioning of the magnets.

[0022] 3. In the above-mentioned surface-mounted rotor magnetic steel bonding tooling technical solution, a pair of adjacent magnetic steel bonding clamps located in the N-pole installation area and a pair of adjacent magnetic steel bonding clamps located in the S-pole installation area are symmetrically set up on both sides of the line connecting the center points of the two positioning holes, wherein the pair of adjacent magnetic steel bonding clamps located in the N-pole installation area is used to install the N-pole magnetic steel, and the pair of adjacent magnetic steel bonding clamps located in the S-pole installation area is used to install the S-pole magnetic steel. Magnetic steel bonding clamps for positioning magnetic steels are arranged on both sides of the line connecting the center points of the positioning holes, which is conducive to the orderly installation of the magnetic steels, and facilitates the operator to identify the installation status of the N-pole and S-pole magnetic steels, avoiding errors during manual installation.

[0023] 4. In the above-mentioned surface-mounted rotor magnet bonding tooling technical solution, the surface of the pressing block is coated with a coating that prevents the magnetic steel glue from bonding, so that the pressing block can be reused repeatedly to improve the utilization rate. The inner arc surface of the pressing block is in close contact with the outer arc surface of the magnetic steel or the magnetic steel placeholder, so that the pressing block and the magnetic steel or the magnetic steel placeholder are pressed more tightly, ensuring the stability and consistency of the magnetic steel during the bonding process with the magnetic steel glue, and ensuring the quality of the magnetic steel bonding work. The material hardness of the pressing block is lower than the hardness of the magnetic steel, so as to avoid the magnetic steel being damaged by the pressing block when providing a sufficiently large clamping force, thereby ensuring stable product quality.

[0024] 5. In the above-mentioned surface mounted rotor magnet bonding tooling technical solution, the locking part is a locking bolt, and a locking hole is opened on the circumference of the magnetic steel hoop in a direction perpendicular to the central axis of the rotor. The locking bolt is screwed into the threaded hole, and the locking bolt presses against the pressure block inward to ensure that the direction of the clamping force of the pressure block is toward the central axis of the rotor, thereby improving the stability and consistency of the magnetic steel during the bonding process with magnetic steel glue.

[0025] 6. In the above-mentioned surface-mounted rotor magnetic steel bonding tooling technical solution, the portion of the pressing block extending out of the magnetic steel hoop is provided with an extension portion that is convenient for inserting into the groove on the inner circumferential surface of the magnetic steel hoop or taking out therefrom, and the extension portion is a convex block protruding toward the circumferential outer side of the rotor, and a screw hole for screwing in a screw is provided on the convex block, and the screw hole in the convex block can be screwed into the screw, so that the pressing block can be inserted into the groove on the inner circumferential surface of the magnetic steel hoop or taken out therefrom.

[0026] 7. In the above-mentioned technical solution of the magnetic steel bonding method, in the step S200, a pair of adjacent magnetic steel bonding clamps located in the N-pole installation area and a pair of adjacent magnetic steel bonding clamps located in the S-pole installation area are selected and symmetrically set on both sides of the line connecting the center points of the two positioning holes, and the magnetic steel is positioned and installed in the magnetic steel positioning areas formed at these two places, and the magnetic steels at these two places are used as positioning reference magnetic steels, which is conducive to the orderly installation of the magnetic steels, and facilitates the operator to identify the installation status of the N-pole and S-pole magnetic steels, avoiding errors during manual installation.

[0027] 8. In the above-mentioned technical solution of the magnetic steel bonding method, in the step S500, after the magnetic steel is solidified, the locking part is loosened, the magnetic steel hoop and the pressure block are moved axially along the rotor to the installation position of the next magnetic steel, and then the locking bolts are tightened and installed in sequence until the installation of the magnetic steel in the row is completed, so as to ensure that each magnetic steel attached to the outer cylindrical surface of the rotor can be firmly and accurately positioned.

[0028] 9. In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] 10. In the present invention, the orientation or position relationship indicated by the terms, "upper", "lower", "inside", "outside", etc. is based on the orientation or position assembly relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 on the present application.

[0030] Due to the application of the above scheme, the present invention has the following advantages and effects compared with the prior art:

[0031] 1. The above scheme of the present invention, by designing a positioning tool for positioning the magnet and a fixing tool for installing the magnet, which are used in combination to complete the magnet bonding operation of the surface-mounted rotor, is suitable for surface-mounted rotors without magnet installation grooves or adjacent magnets with the same polarity, which are difficult to position and install. The positioning tool cooperates with the rotor to complete the positioning of each row of magnets in the N-pole installation area and the S-pole installation area, so that the magnets can be accurately positioned on the smooth outer cylindrical surface of the rotor, ensuring that the magnets of the N-pole and S-pole can be installed in place, and it is no longer required to set a magnet installation groove or a magnet installation platform on the fitting surface of the rotor; ensuring that the magnets are fixed in place, since each magnet is installed piece by piece in the magnet installation area, the structure and angle of the magnet installation area just fit the magnet, so that the installation of each magnet can be very accurate, the magnet is firmly bonded, the magnet glue is not easy to squeeze out, and the surface of the magnet is clean and tidy after bonding.

[0032] 2. Compared with the comparative document 1, the above scheme of the present invention is only applicable to rotors with a central through hole, that is, it is applicable to rotors with a central through hole and rotors without a through hole. The outer surface of the rotor is a curved surface, and no magnetic steel installation platform is required. Compared with the comparative document 1, the rotor end has a positioning hole, which is used as a positioning reference. The magnetic steel bonding end plate and the magnetic steel bonding clamp are positioned by positioning pins. The magnetic steel bonding clamp and the rotor form a magnetic steel positioning area, and the first magnetic steel is installed and positioned with high positioning accuracy. Moreover, the remaining magnetic steels in the circumferential direction are positioned by magnetic steel placeholders to improve the positioning accuracy.

[0033] 3. In the above scheme of the present invention, compared with the comparative document 1 which directly uses screws to lock, the locking pressure is concentrated, which is easy to cause damage to the magnetic steel. In this scheme, the magnetic steel is locked by pressing the pressure block through the locking part, which has a large contact area, uniform locking pressure, and is not easy to damage the magnetic steel.

[0034] 4. In summary, the surface mounted rotor magnet bonding tooling is easy to use, has accurate positioning, firmly bonds the magnet, and the magnet glue is not easy to squeeze out. The surface of the magnet is clean and tidy after bonding. It also has a simple structure and can replace automated tooling equipment in the early stage, making it suitable for use in small batch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Attached Figure 1 It is a three-dimensional schematic diagram of the surface mounted rotor;

[0036] Attached Figure 2 It is a cross-sectional view of the rotating shaft and magnetic steel of the surface mounted rotor;

[0037] Attached Figure 3 It is a schematic diagram of assembling the positioning tooling in the surface mounted rotor magnetic steel bonding tooling of an embodiment of the present invention onto the rotor;

[0038] Attached Figure 4 It is a three-dimensional schematic diagram of the fixing tooling in the surface-mounted rotor magnetic steel bonding tooling according to an embodiment of the present invention being assembled onto the rotor;

[0039] Attached Figure 5 It is a schematic diagram of the assembly of the magnetic steel hoop, the pressing block and the locking part in the fixing tool;

[0040] Attached Figure 6 It is a cross-sectional schematic diagram of the fixing tooling being assembled onto the rotor in the surface mounted rotor magnetic steel bonding tooling according to an embodiment of the present invention.

[0041] The various parts of the above drawings are shown as follows:

[0042] 1. Rotor; 101. N-pole installation area; 102. S-pole installation area; 11. Rotating shaft; 111. Positioning hole; 12. Magnetic isolation ring; 13. Magnetic steel;

[0043] 2. Positioning tooling; 21. Magnetic steel bonding end plate; 211. Pin hole; 212. Clamp installation slot; 22. Magnetic steel bonding clamp; 23. Positioning pin;

[0044] 3. Fixing tool; 31. Magnetic steel placeholder; 32. Magnetic steel hoop; 321. Groove; 322. Locking hole; 33. Pressing block; 331. Extension part; 332. Screw hole; 34. Locking part;

[0045] 401, magnetic steel positioning area;

[0046] 501. Magnetic steel installation area. DETAILED DESCRIPTION

[0047] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below. In each embodiment of the present application, the surface-mounted rotor 1 to which the magnetic steel is to be bonded can refer to the attached Figure 1 As shown, the structure of the surface mounted magnetic steel rotor 1 is composed of a rotating shaft 11, a magnetic isolation ring 12 and magnetic steel, and there is no magnetic steel mounting groove on the outer surface of the rotor 1.

[0048] Embodiment 1

[0049] As attached Figure 3 To Attachment Figure 6 As shown, embodiment 1 of the present invention proposes a surface mounted rotor magnet bonding tool, wherein the rotor 1 has a circumferential surface for bonding the magnet 13, and the circumferential direction of the circumferential surface of the rotor 1 is divided into an N-pole installation area 101 and an S-pole installation area 102, and positioning holes 111 are provided at both ends of the rotor 1, and the magnet bonding tool comprises a positioning tool 2 for positioning the magnet 13 and a fixing tool 3 for installing the magnet 13.

[0050] In the first embodiment of the present invention, the positioning tool 2 includes a magnetic steel bonding end plate 21, a magnetic steel bonding clamping plate 22, and a positioning pin 23; wherein the magnetic steel bonding end plate 21 is positioned and installed at both ends of the rotor 1, and the magnetic steel bonding end plate 21 has an outer edge surface relative to the central axis of the rotor 1, and a pin hole 211 corresponding to the positioning hole 111 is opened on the bonding end plate. When in use, the positioning pin 23 passes through the pin hole 211 and the positioning hole 111 to position and connect the magnetic steel bonding plate to the rotor 1; a plurality of clamping plate installation grooves 212 arranged at intervals along the circumferential direction of the rotor 1 are opened on the outer edge surface of the magnetic steel bonding end plate 21, and the length direction of the clamping plate installation groove 212 is parallel to the axial direction of the rotor 1; the magnetic steel bonding clamping plate 22 is a long strip The middle section of the magnetic steel bonding clamping plate 22 is a surface for abutting against the magnetic steel, and the two ends are joints for positioning and connection. The joints at the two ends of the magnetic steel bonding clamping plate 22 are positioned and installed in the clamping plate installation groove 212; at two positions corresponding to the N-pole installation area 101 and the S-pole installation area 102 of the rotor 1, at least one position is provided with a pair of adjacent magnetic steel bonding clamping plates 22, more specifically, at least one pair of adjacent magnetic steel bonding clamping plates 22 is located in the N-pole installation area 101, and at least another pair of adjacent magnetic steel bonding clamping plates 22 is located in the S-pole installation area 102; a magnetic steel positioning area 401 for positioning a row of magnetic steel 13 is formed between the surface between the two adjacent magnetic steel bonding clamping plates 22 and the outer cylindrical surface of the rotor 1;

[0051] In the first embodiment of the present invention, the fixing tool 3 includes a magnetic steel placeholder 31, a magnetic steel hoop 32, a pressing block 33, and a locking portion 34; wherein, in the use state, the magnetic steel placeholder 31 and the magnetic steel 13 are arc-shaped components with their centers located on the central axis of the rotor 1, the arc length of the magnetic steel placeholder 31 is a multiple of the arc length of the magnetic steel 13, the magnetic steel placeholder 31 is installed on the circumferential surface of the rotor 1, and a magnetic steel installation area 501 for installing a row of magnetic steels 13 is formed between the magnetic steel placeholder 31 and the adjacent magnetic steels 13; the magnetic steel hoop 32 has an inner circular surface, and a plurality of grooves 321 corresponding to the positions of the magnetic steels 13 to be bonded to the surface of the rotor 1 are opened in the annular circumferential direction of the inner circular surface of the magnetic steel hoop 32, and the pressing block 33 is embedded in the groove 321, and the pressing block 33 is driven by the locking portion 34 to press the magnetic steel 13 and the magnetic steel placeholder 31 toward the surface of the rotor 1. The magnetic steel placeholder 31 is made of non-magnetic material and is used to replace adjacent magnetic steels 13 of the same polarity when the magnetic steel 13 is installed circumferentially. The magnetic steel placeholder 31 replaces the adjacent magnetic steels 13 of the same polarity. After the magnetic steel 13 is installed and fixed, the magnetic steel placeholder 31 is taken out, and then the adjacent magnetic steel 13 is installed. In this way, when the magnetic steel 13 is installed circumferentially, each magnetic steel 13 will form a magnetic steel installation area 501 when it is installed, and the repulsion of adjacent magnetic steels 13 of the same polarity can be avoided, which is beneficial to the installation and fixation of the magnetic steel 13.

[0052] In the above-mentioned technical solution for bonding the surface-mounted rotor magnet, there are two positioning holes 111 opened at both ends of the rotor 1, and the two positioning holes 111 are symmetrically arranged on the surface of the rotor 1 at both ends. The line connecting the center points of the two positioning holes 111 on the end face of the rotor 1 is used as the dividing line between the N-pole installation area 101 and the S-pole installation area 102 of the rotor 1, thereby reasonably dividing the two poles of the surface-mounted magnet 13 of the rotor 1 to facilitate the subsequent use of the rotor 1 and to facilitate the symmetrical installation and positioning of the magnet 13.

[0053] In the above-mentioned surface-mounted rotor magnetic steel bonding tooling technical solution, a pair of adjacent magnetic steel bonding clamps 22 located in the N-pole installation area 101 and a pair of adjacent magnetic steel bonding clamps 22 located in the S-pole installation area 102 are symmetrically set up on both sides of the line connecting the center points of the two positioning holes 111, wherein the pair of adjacent magnetic steel bonding clamps 22 located in the N-pole installation area 101 is used to install the N-pole magnetic steel, and the pair of adjacent magnetic steel bonding clamps 22 located in the S-pole installation area 102 is used to install the S-pole magnetic steel. The magnetic steel bonding clamps 22 for positioning the magnetic steel are arranged on both sides of the line connecting the center points of the positioning holes 111, which is conducive to the orderly installation of the magnetic steel, and it is convenient for the operator to identify the installation status of the N-pole and S-pole magnetic steels, avoiding errors during manual installation.

[0054] In the above-mentioned surface-mounted rotor magnet bonding tooling technical solution, the surface of the pressing block 33 is coated with a coating that prevents the magnetic steel glue from bonding, so that the pressing block 33 can be used repeatedly and multiple times, thereby improving the utilization rate. The inner arc surface of the pressing block 33 is in close contact with the outer arc surface of the magnetic steel or the magnetic steel placeholder 31, so that the pressing block 33 and the magnetic steel or the magnetic steel placeholder 31 are pressed more tightly, ensuring the stability and consistency of the magnetic steel during the bonding process with the magnetic steel glue, and ensuring the quality of the magnetic steel bonding work. The material hardness of the pressing block 33 is lower than the hardness of the magnetic steel, thereby preventing the pressing block 33 from providing a sufficiently large clamping force to damage the magnetic steel, thereby ensuring stable product quality.

[0055] In the above-mentioned surface-mounted rotor magnet bonding tooling technical solution, the locking portion 34 is a locking bolt, and a locking hole 322 is opened on the circumference of the magnetic steel hoop 32 in a direction perpendicular to the central axis of the rotor 1. The locking bolt is screwed into the threaded hole, and the locking bolt presses against the pressure block 33 on the inner side to ensure that the direction of the clamping force of the pressure block 33 is toward the central axis of the rotor 1, thereby improving the stability and consistency of the magnetic steel during the bonding process with the magnetic steel glue.

[0056] In the above-mentioned surface-mounted rotor magnetic steel bonding tooling technical solution, the portion of the pressing block 33 extending out of the magnetic steel hoop 32 is provided with an extension portion 331 that is convenient for inserting into the groove 321 of the inner circumferential surface of the magnetic steel hoop 32 or taking out therefrom. The extension portion 331 is a convex block protruding toward the circumferential outer side of the rotor 1, and a screw hole 332 for screwing in a screw is provided on the convex block. The screw hole 332 in the convex block can be screwed into a screw, so that the pressing block 33 can be inserted into the groove 321 of the inner circumferential surface of the magnetic steel hoop 32 or taken out therefrom.

[0057] Embodiment 2

[0058] To achieve the above purpose, the second embodiment of the present invention proposes a magnetic steel bonding method using the surface mounted rotor magnetic steel bonding tooling described in the first embodiment, and the magnetic steel bonding method comprises the following steps:

[0059] S100, aligning the pin holes 211 of the two magnetic steel bonding end plates 21 with the positioning holes 111, and positioning and installing the magnetic steel bonding end plates 21 at both ends of the rotor 1 through the positioning pins 23;

[0060] S200, embed the magnetic steel bonding clamping plate 22 into the clamping plate installation groove 212 on the outer circumferential surface of the magnetic steel bonding end plate 21, wherein a pair of adjacent magnetic steel bonding clamping plates 22 are located in the N-pole installation area 101, and a pair of adjacent magnetic steel bonding clamping plates 22 are located in the S-pole installation area 102, and a magnetic steel positioning area 401 for positioning a row of magnetic steel is formed between the two adjacent magnetic steel bonding clamping plates 22 and the outer circumferential surface of the rotor 1; a row of N-pole magnetic steel is installed in the middle of a pair of adjacent magnetic steel bonding clamping plates 22 located in the N-pole installation area 101 and bonded with magnetic steel glue, and the row of magnetic steel is used as the positioning reference magnetic steel, and a row of S-pole magnetic steel is installed in the middle of a pair of adjacent magnetic steel bonding clamping plates 22 located in the S-pole installation area 102 and bonded with magnetic steel glue, and the row of magnetic steel is used as the positioning reference magnetic steel;

[0061] S300, after the positioning reference magnetic steel is solidified, disassemble the bonding clamp plate and the magnetic steel bonding end plate 21, and install the magnetic steel placeholder block 31, the magnetic steel hoop 32, and the pressing block 33, align the pressing block 33 at the position corresponding to the positioning reference magnetic steel, and install the remaining circumferential magnetic steels;

[0062] S400, taking the number of magnetic steels required to be installed between the two positioning reference magnetic steels minus one as the specification of the magnetic steel placeholder 31, abutting one end of the magnetic steel placeholder 31 in the circumferential direction against one column of the positioning reference magnetic steels, leaving the other side empty, forming a column of magnetic steel installation areas 501 for magnetic steel installation between the empty side and the other column of the positioning reference magnetic steels, and locking and fixing the magnetic steel and the magnetic steel placeholder 31 by using the magnetic steel hoop 32, the pressing block 33 and the locking portion 34;

[0063] S500, bonding the magnetic steel to the magnetic steel installation area 501 with magnetic steel glue, and after the magnetic steel is solidified, releasing the locking part 34, moving the pressing block 33 to the installation position of the next magnetic steel, and pressing the magnetic steel;

[0064] S600, after one row of magnets is installed and fixed, the magnet placeholder 31 is taken out, and the number of magnets required to be installed between the two positioning reference magnets minus two is used as the specification of the magnet placeholder 31, and the next row of magnets is installed, and the above steps S500 and S600 are repeated according to the specifications of the magnet placeholder 31 minus one order of magnitude, until the bonding of the last row of magnets is completed.

[0065] In the step S200 of the magnetic steel bonding method of the above-mentioned embodiment 2, a pair of adjacent magnetic steel bonding clamps 22 located in the N-pole installation area 101 and a pair of adjacent magnetic steel bonding clamps 22 located in the S-pole installation area 102 are selected and symmetrically set on both sides of the line connecting the center points of the two positioning holes 111, and the magnetic steel is positioned and installed in the magnetic steel positioning areas 401 formed at these two places, and the magnetic steels at these two places are used as positioning reference magnetic steels, which is conducive to the orderly installation of the magnetic steels, and facilitates the operator to identify the installation status of the N-pole and S-pole magnetic steels, avoiding errors during manual installation.

[0066] In the magnetic steel bonding method of the above-mentioned embodiment 2, in the step S500, after the magnetic steel is solidified, the locking part 34 is loosened, the magnetic steel hoop 32 and the pressing block 33 are moved axially along the rotor 1 to the installation position of the next magnetic steel, and then the locking bolts are tightened and installed in sequence until the installation of the magnetic steel in the row is completed, so as to ensure that each magnetic steel attached to the outer cylindrical surface of the rotor 1 can be firmly and accurately positioned.

[0067] More specifically, the following Figure 2 Taking the one-pole surface-mounted rotor 1 shown in the figure as an example, the function and use of the surface-mounted rotor magnetic steel bonding tooling are explained:

[0068] As attached Figure 2 As shown, the N pole and S pole of the surface mounted rotor 1 are both made of five magnetic steels spliced ​​together in the circumferential direction, and the line connecting the center points of the two pin holes 211 on the end surface of the shaft 11 is used as the dividing line between the N pole and the S pole of the rotor 1;

[0069] As attached Figure 3 As shown, firstly, two magnetic steel bonding end plates 21 are installed on the rotating shaft 11 through the positioning pins 23, and then two magnetic steel bonding clamping plates 22 are embedded in the clamping plate installation grooves 212 on the outer circumferential surfaces of the magnetic steel bonding end plates 21. The magnetic steel positioning area 401 formed by the two magnetic steel bonding clamping plates 22 and the rotating shaft 11 is used to install the N-pole 3# magnetic steel. After the magnetic steel glue is cured, the magnetic steel bonding clamping plates 22 are removed, and the S-pole 3# magnetic steel is installed in the same way.

[0070] The magnetic steels in the 3# row of the N-pole installation area 101 and the S-pole installation area 102 are positioned and fixed by the positioning fixture 2. After the magnetic steel bonding end plate 21, the positioning pin 23 and the magnetic steel bonding clamping plate 22 are installed and positioned, the remaining magnetic steels are installed in the circumferential direction with the 3# magnetic steel as the reference. The magnetic steel bonding and fixing fixture 3 is required for the circumferential installation of the magnetic steel. The assembly diagram of the magnetic steel hoop 32, the pressure block 33, the locking bolt and the magnetic steel placeholder block 31 is shown in the attached figure. Figure 4 As shown;

[0071] As attached Figure 5 , 6 As shown, the magnetic steel placeholder 31 and the magnetic steel installation area 501 formed by the 3# magnetic steel are used to install the 2# and 4# magnetic steels. During installation, the magnetic steel hoop 32, the pressing block 33 and the locking bolts are used to lock and fix the magnetic steel and the magnetic steel placeholder 31. After the magnetic steel is solidified, the locking bolts are loosened, and the magnetic steel hoop 32 and the pressing block 33 are moved axially to the installation position of the next magnetic steel, and then the locking bolts are tightened, and the installation is carried out in sequence until the magnetic steel in the row is installed;

[0072] After the previous row of magnets is installed, the magnet placeholders 31 need to be replaced with magnet placeholders 31 of different specifications according to the number of magnets not installed in the circumferential direction. The magnet placeholders 31 can be selected by decreasing multiples of the arc length of the installable magnets. According to the above method, the installation of the magnets in the circumferential direction is completed in sequence.

[0073] Through the implementation of the first and second embodiments of the present invention, a positioning tool 2 for positioning the magnetic steel and a fixing tool 3 for installing the magnetic steel are designed to cooperate with each other to complete the magnetic steel bonding operation of the surface-mounted rotor 1. It is suitable for the surface-mounted rotor 1 without a magnetic steel installation groove or with adjacent magnetic steels of the same polarity, which is difficult to position and install. The positioning tool 2 cooperates with the rotor 1 to complete the positioning of each row of magnetic steel in the N-pole installation area 101 and the S-pole installation area 102, so that the magnetic steel can be accurately positioned on the smooth outer cylindrical surface of the rotor 1, ensuring that the magnetic steels of the N-pole and S-pole can be installed in place, and it is no longer required to set a magnetic steel on the fitting surface of the rotor 1. Steel installation groove or magnet installation platform; after determining the positioning reference of the magnet, the fixed tool 3 installs the remaining magnets one by one. In the fixed tool 3, a magnet placeholder 31 is used. A magnet installation area 501 for installing a row of magnets is formed between the magnet placeholder 31 and the adjacent magnets. Pieces of magnets are installed in the magnet installation area 501. Each installed piece is pressed by a pressing block 33 to ensure that the magnet is fixed in place. Since each magnet is installed in the magnet installation area 501 piece by piece, the structure and angle of the magnet installation area 501 just match the magnet, so that each magnet can be installed very accurately.

[0074] With respect to the above-mentioned embodiment, possible changes of the present invention are described as follows:

[0075] 1. In the above-mentioned embodiment 1, the magnetic steel bonding end plate 21 has an outer edge surface relative to the central axis of the rotor 1. The magnetic steel bonding end plate 21 can be a circular plate, and its outer edge surface is a regular outer circle, but the present invention is not limited to this. The magnetic steel bonding end plate 21 can also be a square, oval or special-shaped plate, etc., as long as the clamping plate mounting groove 212 set on the outer edge surface can allow the magnetic steel bonding clamping plate 22 to be well fixed; if a circular plate is used, the design, production and assembly of the steel bonding end plate can be convenient, and the regular shape also makes it easy for a pair of magnetic steel bonding clamping plates 22 in each of the N-pole mounting area 101 and the S-pole mounting area 102 to be symmetrically set on both sides of the line connecting the center points of the two positioning holes 111, ensuring the rapid and accurate positioning of the magnetic steel.

[0076] 2. In the above-mentioned embodiment 1, the magnetic steel placeholder 31 is made of non-magnetic material, and may be made of metals and alloys other than iron, cobalt, nickel and their alloys, such as copper, aluminum, zinc and corresponding alloys, or non-metallic non-magnetic material, but the present invention is not limited thereto.

[0077] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A surface mounted rotor magnetic steel bonding tool, the rotor (1) having a circumferential surface for bonding magnetic steel (13), the circumferential surface of the rotor (1) being divided into an N-pole mounting area (101) and an S-pole mounting area (102) in the circumferential direction, and positioning holes (111) being provided at both ends of the rotor (1), characterized in that: The magnetic steel (13) bonding tool comprises a positioning tool (2) for positioning the magnetic steel and a fixing tool (3) for installing the magnetic steel (13); The positioning tool (2) comprises a magnetic steel bonding end plate (21), a magnetic steel bonding clamping plate (22), and a positioning pin (23); wherein: The magnetic steel bonding end plate (21) is positioned and installed at both ends of the rotor (1); the magnetic steel bonding end plate (21) has an outer edge surface relative to the central axis of the rotor (1); a pin hole (211) corresponding to the positioning hole (111) is opened on the magnetic steel bonding end plate (21); in a state of use, the positioning pin (23) passes through the pin hole (211) and the positioning hole (111) to position and connect the magnetic steel bonding plate to the rotor (1); a plurality of clamping plate installation grooves (212) arranged at intervals along the circumferential direction of the rotor (1) are opened on the outer edge surface of the magnetic steel bonding end plate (21); the length direction of the clamping plate installation groove (212) is parallel to the axial direction of the rotor (1); The magnetic steel bonding clamp (22) is a long strip plate, the middle section of the magnetic steel bonding clamp (22) is a backing surface for abutting against the magnetic steel (13), and the two ends are joints for positioning connection, and the joints at the two ends of the magnetic steel bonding clamp (22) are positioned and installed in the clamp installation groove (212); a pair of adjacent magnetic steel bonding clamps (22) are arranged at at least one position at two positions corresponding to the N pole installation area (101) and the S pole installation area (102) of the rotor, and a magnetic steel positioning area (401) for positioning a row of magnetic steel (13) is formed between the backing surface between the two adjacent magnetic steel bonding clamps (22) and the outer cylindrical surface of the rotor (1); The fixing tool (3) comprises a magnetic steel placeholder (31), a magnetic steel hoop (32), a pressing block (33), and a locking portion (34); wherein: In a state of use, the magnetic steel placeholder (31) and the magnetic steel (13) are both arc-shaped components whose center is located on the central axis of the rotor (1); the arc length of the magnetic steel placeholder (31) is a multiple of the arc length of the magnetic steel (13); the magnetic steel placeholder (31) is mounted on the circumferential surface of the rotor (1); a magnetic steel installation area (501) for installing a row of magnetic steels (13) is formed between the magnetic steel placeholder (31) and the adjacent magnetic steels (13); the magnetic steel hoop (32) has an inner circular surface; a plurality of grooves (321) corresponding to the positions of the magnetic steels (13) to be bonded to the surface of the rotor (1) are formed in the annular circumferential direction of the inner circular surface of the magnetic steel hoop (32); the pressing block (33) is embedded in the groove (321); the pressing block (33) is driven by the locking portion (34) to press the magnetic steel (13) and the magnetic steel placeholder (31) in a direction toward the surface of the rotor (1).

2. The surface mounted rotor magnetic steel bonding tool according to claim 1, characterized in that: The number of positioning holes (111) opened at both ends of the rotor (1) is two, and the two positioning holes (111) are symmetrically arranged on the surfaces of the two ends of the rotor (1), and a line connecting the center points of the two positioning holes (111) on the end surface of the rotor (1) serves as a dividing line between an N-pole installation area (101) and an S-pole installation area (102) of the rotor (1).

3. The surface mounted rotor magnetic steel bonding tool according to claim 2, characterized in that: A pair of adjacent magnetic steel bonding clamps (22) located in the N-pole installation area and a pair of adjacent magnetic steel bonding clamps (22) located in the S-pole installation area are symmetrically arranged on both sides of a line connecting the center points of the two positioning holes (111), wherein the pair of adjacent magnetic steel bonding clamps (22) located in the N-pole installation area (101) is used to install the magnetic steel (13) of the N-pole, and the pair of adjacent magnetic steel bonding clamps (22) located in the S-pole installation area (102) is used to install the magnetic steel (13) of the S-pole.

4. The surface mounted rotor magnetic steel bonding tool according to claim 1, characterized in that: The surface of the pressing block (33) is coated with a coating that prevents the magnetic steel (13) from being glued together, the inner arc surface of the pressing block (33) is in close contact with the outer arc surface of the magnetic steel (13) or the magnetic steel placeholder block (31), and the material hardness of the pressing block (33) is lower than the hardness of the magnetic steel (13).

5. The surface mounted rotor magnetic steel bonding tool according to claim 1, characterized in that: The locking portion (34) is a locking bolt, and a locking hole (322) is provided on the circumference of the magnetic steel hoop (32) in a direction perpendicular to the central axis of the rotor (1). The locking bolt is screwed into the locking hole (322), and the locking bolt presses against the pressure block (33) on the inner side.

6. The surface mounted rotor magnetic steel bonding tool according to claim 1, characterized in that: The portion of the pressing block (33) extending out of the magnetic steel hoop (32) is provided with a groove (321) for facilitating insertion into the inner circular surface of the magnetic steel hoop (32) or an extension portion (331) for removal therefrom.

7. The surface mounted rotor magnetic steel bonding tool according to claim 6, characterized in that: The extension portion (331) is a convex block protruding toward the outer side of the rotor (1) in the circumferential direction, and a screw hole (332) for screwing in a screw rod is provided on the convex block.

8. A magnetic steel bonding method of a surface mounted rotor magnetic steel bonding tool as claimed in any one of claims 1 to 7, characterized in that: The magnetic steel bonding method comprises the following steps: S100, aligning the pin holes (211) of the two magnetic steel bonding end plates (21) with the positioning holes (111), and positioning and installing the magnetic steel (13) bonding end plates (21) at both ends of the rotor (1) by means of the positioning pins (23); S200, embedding the magnetic steel (13) bonding clamping plates (22) into the clamping plate installation grooves (212) on the outer circumferential surface of the magnetic steel bonding end plate (21), wherein a pair of adjacent magnetic steel bonding clamping plates (22) are located in the N-pole installation area (101), and a pair of adjacent magnetic steel bonding clamping plates (22) are located in the S-pole installation area (102), and a magnetic field for positioning a row of magnetic steels (13) is formed between the two adjacent magnetic steel bonding clamping plates (22) and the outer circumferential surface of the rotor (1). A steel positioning area (401); a row of N-pole magnetic steels (13) is installed between a pair of adjacent magnetic steel bonding clamps (22) located in the N-pole installation area (101) and bonded with magnetic steel glue, and the row of magnetic steels (13) is used as a positioning reference magnetic steel; a row of S-pole magnetic steels (13) is installed between a pair of adjacent magnetic steel bonding clamps (22) located in the S-pole installation area (102) and bonded with magnetic steel glue, and the row of magnetic steels is used as a positioning reference magnetic steel (13); S300, after the positioning reference magnetic steel is solidified, the bonding clamp (22) and the magnetic steel bonding end plate (21) are disassembled, and the magnetic steel placeholder block (31), the magnetic steel hoop (32), and the pressing block (33) are installed, and the pressing block (33) at the position corresponding to the positioning reference magnetic steel is aligned, and the remaining circumferential magnetic steels (13) are installed; S400, using the number of magnetic steels (13) required to be installed between the two positioning reference magnetic steels minus one as the specification of the magnetic steel placeholder (31), abutting one end of the magnetic steel placeholder (31) in the circumferential direction against one of the rows of positioning reference magnetic steels, leaving the other side empty, forming a row of magnetic steel installation areas (501) for installing the magnetic steels (13) between the empty side and the other row of positioning reference magnetic steels, and locking and fixing the magnetic steels (13) and the magnetic steel placeholder (31) using the magnetic steel hoop (32), the pressure block (33) and the locking portion (34); S500, bonding the magnetic steel (13) to the magnetic steel installation area (501) with magnetic steel glue, and after the magnetic steel (13) is solidified, releasing the locking portion (34), moving the pressing block (33) to the installation position of the next magnetic steel (13), and pressing the magnetic steel (13); S600, after a row of magnetic steels (13) is installed and fixed, the magnetic steel placeholders (31) are taken out, and the number of magnetic steels (13) required to be installed between the two positioning reference magnetic steels minus two is used as the specification of the magnetic steel placeholders (31), and the next row of magnetic steels (13) is installed, and the above steps S500 and S600 are repeated according to the specifications of the magnetic steel placeholders (31) minus one order of magnitude, until the bonding of the last row of magnetic steels (13) is completed.

9. A magnetic steel bonding method according to claim 8, characterized in that: In step S200, a pair of adjacent magnetic steel bonding clamps (22) located in the N-pole installation area and a pair of adjacent magnetic steel bonding clamps (22) located in the S-pole installation area are selected and symmetrically set on both sides of the line connecting the center points of the two positioning holes (111), and the magnetic steel (13) is positioned and installed in the magnetic steel positioning areas (401) formed at these two places, and the magnetic steel (13) at these two places is used as the positioning reference magnetic steel.

10. A magnetic steel bonding method according to claim 8, characterized in that: In the step S500, after the magnetic steel (13) is solidified, the locking part (34) is loosened, the magnetic steel hoop (32) and the pressing block (33) are moved axially along the rotor (1) to the installation position of the next magnetic steel (13), and then the locking bolts are tightened and installed in sequence until the installation of the magnetic steel (13) in the row is completed.

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