A micro permanent magnet motor rotor magnetic steel bonding tool

Abstract

The application discloses a kind of micro permanent magnet motor rotor magnetic steel bonding tool, including base, positioning frame, locating block I, locating block II, cylindrical pin, open sleeve, press sleeve, rotor core, main magnetic steel, induced magnetic steel and bushing.Main magnetic steel, induced magnetic steel and bushing are all sleeved in the outer wall of rotor core, and bushing is located between main magnetic steel and induced magnetic steel.When bonding main magnetic steel and induced magnetic steel, 1) first, locating block I is inserted into the special-shaped groove of positioning frame, then N-pole main magnetic steel is placed, then locating block I is taken out, and S-pole main magnetic steel is placed;2) bushing is sleeved;3) locating block II is inserted into the special-shaped groove of positioning frame, then N-pole induced magnetic steel is placed, then locating block II is taken out, and S-pole induced magnetic steel is placed.This technology is designed for micro motor rotor magnetic steel bonding special tool, and the bonding of two groups of magnetic steel of magnetic steel and induced magnetic steel is completed in turn, the relative position between the same group of magnetic steel and two groups of magnetic steel is guaranteed, and the structure is simple, easy and reliable to operate, with low cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of micro permanent magnet motor magnetic steel bonding, in particular to a micro permanent magnet motor rotor magnetic steel bonding tool. BACKGROUND

[0002] Due to the limited size of the micro permanent magnet motor, the internal components of the motor are very compact, the rotor is bonded with two groups of permanent magnets of main magnetic steel and induced magnetic steel, the same group of magnetic steel is closely attached, the N and S polarity is staggered and distributed, and the relative position of the polarity between the two groups of magnetic steel is required to be consistent, which puts forward higher requirements for magnetic steel bonding.

[0003] The existing permanent magnet rotor magnetic steel bonding generally adopts special equipment and traditional bonding tool. The equipment bonding is limited in action space due to the small size of the motor rotor and the complete attachment between the magnetic steels of different polarity, and repeated clamping positioning is required, which affects the yield, the equipment has many stations and high cost; the ordinary bonding tool can only bond one group of magnetic steel at a time, and the two groups of magnetic steel need to be bonded by increasing the tool and repositioning and clamping, which also has quality risks. SUMMARY

[0004] The purpose of the present application is to provide a micro permanent magnet motor rotor magnetic steel bonding tool, which comprises a base, a positioning frame, a positioning block I, a positioning block II, a cylindrical pin, an open sleeve, a pressing sleeve, a rotor core, main magnetic steel, induced magnetic steel and a bushing.

[0005] The base has at least two planes I, and the two planes I are oppositely arranged.

[0006] The base is provided with a stepped hole at the geometric center, the axis of the stepped hole is perpendicular to the plane I, and the two ends of the stepped hole are connected to the two planes I respectively.

[0007] The positioning frame has at least two planes II, and the two planes II are oppositely arranged.

[0008] The positioning frame is provided with a through hole I at the geometric center, the axis of the through hole I is perpendicular to the plane II, and the two ends of the through hole I are connected to the two planes II respectively.

[0009] A plurality of special-shaped grooves are arranged at intervals around the through hole I in the positioning frame.

[0010] The positioning frame and the base are connected by the cylindrical pin.

[0011] One end of the rotor core is located in the stepped hole, and the other end is located in the through hole I.

[0012] The open sleeve is a hollow cylindrical structure, which is attached between the inner side wall of the stepped hole and the outer side wall of the rotor core.

[0013] The positioning block I and the positioning block II are strip-shaped structures, and a plurality of grooves I are formed on the strip-shaped structures.

[0014] In the process of bonding the main magnetic steel and the induction magnetic steel, the positioning block I is inserted into the special-shaped slot, and then the N-pole main magnetic steel is inserted into the groove II formed by the positioning block I, the positioning frame and the rotor core.

[0015] The bushing is nested on the outer sidewall of the rotor core, and is compressed by the compression sleeve.

[0016] Then the positioning block II is inserted into the special-shaped slot, and then the N-pole induction magnetic steel is inserted into the groove III formed by the positioning block II, the positioning frame, the bushing and the rotor core; the positioning block II is taken out, and the S-pole induction magnetic steel is inserted into the position from which the positioning block II is taken out.

[0017] Finally, the positioning frame is removed, and the rotor core with the bonded magnetic steel is taken out from the base.

[0018] Further, a connecting surface between the two planes I is recorded as a connecting surface, and an inner hole is formed on the connecting surface, and one end of the inner hole is connected with the stepped hole.

[0019] The axis of the inner hole is perpendicular to the axis of the stepped hole.

[0020] A through hole II is formed at the position where the opening sleeve contacts the inner hole.

[0021] By tightening the compression screw passing through the inner hole, the opening sleeve is locked to the shaft body of the rotor core, so that the rotor core and the base are connected as a whole.

[0022] Further, in the process of bonding the main magnetic steel and the induction magnetic steel, the compression screw is tightened.

[0023] Further, an annular step is arranged on the outer wall of the plane I of the base away from the positioning frame.

[0024] An annular step is arranged on the outer wall of the plane II of the positioning frame away from the base.

[0025] Further, the base body and the positioning frame body are uniformly etched with a mark line for distinguishing the direction.

[0026] Further, the base and the positioning frame are formed with a through hole III for assembling a cylindrical pin.

[0027] The cylindrical pin is in small interference fit with the through hole III of the base, and is in small gap fit with the through hole III of the positioning frame.

[0028] Further, the positioning block I and the positioning block II are in small gap fit with the special-shaped slot.

[0029] Furthermore, the number of N-pole main magnets, S-pole main magnets, N-pole induction magnets, and S-pole induction magnets is the same as the number of irregular grooves.

[0030] Furthermore, the pressure sleeve is a stepped rotating body structure, and the pressure sleeve has a through hole IV, the axis of the through hole IV and the axis of the pressure sleeve are on the same straight line.

[0031] The second objective of this invention is to provide an assembly method based on a micro permanent magnet motor rotor magnet bonding fixture, comprising the following steps:

[0032] 1) Fit the opening sleeve into the stepped hole of the base, and place the base with the opening sleeve installed on a horizontal workbench;

[0033] 2) Insert the rotor core into the inner hole of the stepped hole and the open sleeve, and tighten the clamping screw to make the open sleeve lock the rotor core shaft, so that the rotor core and the base are connected as a whole.

[0034] 3) Use cylindrical pins to assemble the positioning frame and the base together;

[0035] 4) Insert positioning block I into the irregular groove, then insert the N-pole main magnet into the groove II formed by positioning block I, positioning frame and rotor core, then remove positioning block I, and insert the S-pole main magnet at the position where positioning block I was removed.

[0036] 5) Place the bushing on the outer wall of the rotor core and apply pressure to the bushing with a pressure sleeve to axially compress the main magnet;

[0037] 6) Insert the positioning block II into the irregular groove, then insert the N pole induction magnet into the groove III formed by the positioning block II, the positioning frame, the bushing and the rotor core. Then remove the positioning block II and insert the S pole induction magnet at the position where the positioning block II was removed.

[0038] 7) Remove the positioning frame, loosen the clamping screws, and remove the rotor core with the magnets bonded to it from the base, thus completing the bonding of the two sets of magnets to the rotor core.

[0039] The technical effects of this invention are undeniable, and its beneficial effects are as follows:

[0040] This technology is designed with a special tooling for bonding rotor magnets of micro permanent magnet motors. The workpiece is clamped in one go, and the bonding of two sets of magnets, namely the magnet and the induction magnet, is completed sequentially. This ensures the relative position of the same set of magnets and the two sets of magnets. The structure is simple, the operation is convenient and reliable, the pressure bearing capacity is strong, the workpiece deformation is small, and the cost is low. Attached Figure Description

[0041] Figure 1 a is the assembly drawing of the permanent magnet rotor;

[0042] Figure 1 b is the schematic diagram of the main magnetic steel structure; Figure 1 c is the schematic diagram of the inductive magnetic steel structure;

[0043] Figure 1 d is Figure 1 A-A cross-sectional view; Figure 1 e is Figure 1 B-B cross-sectional view;

[0044] Figure 2 is the schematic diagram of the main magnetic steel bonding;

[0045] Figure 3 is the schematic diagram of the inductive magnetic steel bonding;

[0046] Figure 4 is Figure 2 A-A cross-sectional view;

[0047] Figure 5 a is the schematic diagram of the base structure;

[0048] Figure 5 b is the front view of the base; Figure 5 c is Figure 5 b C-C cross-sectional view;

[0049] Figure 6 a is the schematic diagram of the positioning frame structure;

[0050] Figure 6 b is the top view of the positioning frame; Figure 6 c is Figure 6 b B-B cross-sectional view;

[0051] Figure 7 is the three views of the positioning block I, Figure 7 a is the front view, Figure 7 b is the side view, Figure 7 c is the top view;

[0052] Figure 8 is the three views of the positioning block II, Figure 8 a is the front view, Figure 8 b is the side view, Figure 8 c is the top view;

[0053] Figure 9 is the schematic diagram of the cylindrical pin structure;

[0054] Figure 10 a is the front view of the open sleeve; Figure 10 b is the top view of the open sleeve;

[0055] Figure 11 is the cross-sectional view of the pressing sleeve;

[0056] Figure 12 a is the front view, Figure 12 a is the front view, Figure 12 b is the side view, Figure 12 c is the top view;

[0057] In the figure: 101 - base; 102 - positioning frame; 103 - positioning block I; 104 - positioning block II; 105 - cylindrical pin; 106 - open sleeve; 107 - compression screw; 108 - compression sleeve; 2 - rotor core; 3 - main magnetic steel; 4 - inductive magnetic steel; 5 - bushing; 6 - stepped hole; 7 - through hole I; 8 - special-shaped groove; 9 - inner hole; 10 - through hole II; 11 - annular step; 12 - through hole III. DETAILED DESCRIPTION

[0058] The application will be further described in conjunction with the examples below, but should not be understood as limiting the above-mentioned subject matter of the application to the following examples. According to the ordinary technical knowledge and common practice in the art, various substitutions and modifications can be made without departing from the above-mentioned technical idea of the application, and all of them should be included in the protection scope of the application.

[0059] Example 1

[0060] A micro permanent magnet motor rotor magnetic steel bonding tool, comprising a base 101, a positioning frame 102, a positioning block I 103, a positioning block II 104, a cylindrical pin 105, an open sleeve 106, a compression sleeve 108, a rotor core 2, a main magnetic steel 3, an inductive magnetic steel 4 and a bushing 5.

[0061] The base 101 has at least two planes I, and the two planes I are oppositely arranged.

[0062] The base 101 is provided with a stepped hole 6 at the geometric center, the axis of the stepped hole 6 is perpendicular to the plane I, and the two ends of the stepped hole 6 are respectively connected to the two planes I.

[0063] The positioning frame 102 has at least two planes II, and the two planes II are oppositely arranged.

[0064] The positioning frame 102 is provided with a through hole I 7 at the geometric center, the axis of the through hole I 7 is perpendicular to the plane II, and the two ends of the through hole I 7 are respectively connected to the two planes II.

[0065] Referring to Figure 6 In the positioning frame 102, a plurality of special-shaped grooves 8 are arranged at intervals around the through hole I 7.

[0066] The positioning frame 102 and the base 101 are positioned and connected by the cylindrical pin 105.

[0067] Referring to Figure 2 , Figure 3One end of the rotor core 2 is located in the stepped hole, and the other end is located in the through hole I.

[0068] See Figure 10 The opening sleeve 106 is a hollow cylindrical structure, which is attached between the inner wall of the stepped hole 6 and the outer wall of the rotor core 2. See [reference needed]. Figures 2-4 .

[0069] See Figure 7 , Figure 8 The positioning block I 103 and positioning block II 104 are strip-shaped structures with several grooves I on them.

[0070] The length of positioning block II 104 is less than the length of positioning block I 103.

[0071] When bonding the main magnet 3 and the induction magnet 4, first insert the positioning block I103 into the irregular groove 8, and then insert the N-pole main magnet 3 into the groove II formed by the positioning block I103, the positioning frame 102 and the rotor core 2; remove the positioning block I103 and insert the S-pole main magnet 3 at the position where the positioning block I103 was removed.

[0072] The bushing 5 is nested on the outer wall of the rotor core 2 and pressed tightly with the pressure sleeve 108.

[0073] Next, insert the positioning block II 104 into the irregular groove 8, and then insert the N pole induction magnet 4 into the groove III formed by the positioning block II 104, the positioning frame 102, the bushing 5 and the rotor core 2; remove the positioning block II 104, and insert the S pole induction magnet 4 at the position where the positioning block II 104 was removed.

[0074] Finally, remove the positioning frame 102 and take out the rotor core 2, which has completed the magnet bonding, from the base 101.

[0075] Example 2:

[0076] The main structure of this embodiment is the same as that of embodiment 1. Furthermore, the N-pole main magnet 3 is automatically attracted to the outer wall of the rotor core 2 due to magnetism, and the S-pole main magnet 3 is automatically attracted to the outer wall of the N-pole main magnet 3.

[0077] The N-pole induction magnet 4 is automatically attracted to the outer wall of the rotor core 2 due to its magnetism, and the S-pole induction magnet 4 is automatically attracted to the outer wall of the N-pole induction magnet 4.

[0078] Example 3:

[0079] The main structure of this embodiment is the same as any one of embodiments 1-2. Further, see [link to embodiment 1-2]. Figure 5 The surface between the two planes I is called the connecting surface. An inner hole 9 is provided on the connecting surface, and one end of the inner hole 9 is connected to the stepped hole 6.

[0080] The axis of the inner hole 9 is perpendicular to the axis of the stepped hole 6.

[0081] Referring to Figure 4 , a through hole II 10 is formed at the position where the opening sleeve 106 contacts the inner hole 9.

[0082] The opening sleeve 106 is locked to the shaft body of the rotor core 2 by tightening the pressing screw 107 passing through the inner hole 9, so that the rotor core 2 is connected to the base 101 as a whole.

[0083] Embodiment 4:

[0084] The main structure of the present embodiment is the same as that of embodiment 3, and further, in the process of bonding the main magnetic steel 3 and the induction magnetic steel 4, the pressing screw 107 is tightened.

[0085] Embodiment 5:

[0086] The main structure of the present embodiment is the same as that of any one of embodiments 3-4, and further, referring to Figure 12 , the pressing screw 107 is a stepped rotary body structure, and a handle is further installed thereon for tightening.

[0087] Embodiment 6:

[0088] The main structure of the present embodiment is the same as that of any one of embodiments 1-5, and further, the base 101 and the positioning frame 102 are integrally cylindrical structures.

[0089] Embodiment 7:

[0090] The main structure of the present embodiment is the same as that of any one of embodiments 1-6, and further, referring to Figure 5 , an annular step 11 is arranged on the outer wall of the plane I of the side of the base 101 away from the positioning frame 102.

[0091] Referring to Figure 6 , an annular step 11 is arranged on the outer wall of the plane II of the side of the positioning frame 102 away from the base 101.

[0092] Embodiment 8:

[0093] The main structure of the present embodiment is the same as that of any one of embodiments 1-7, and further, a mark line for distinguishing direction is uniformly etched on the base 101 body and the positioning frame 102 body.

[0094] Embodiment 9:

[0095] The main structure of the present embodiment is the same as that of any one of embodiments 1-8, and further, referring to Figures 2-6The base 101 and the positioning frame 102 are provided with through holes III 12 for assembling the cylindrical pin 105.

[0096] The cylindrical pin 105 is in a small interference fit with the through hole III on the base 101 and in a small gap fit with the through hole III on the positioning frame 102.

[0097] Embodiment 10:

[0098] The main structure of the embodiment is the same as any one of Embodiments 1-9, and further, the positioning block I 103 and the positioning block II 104 are in a small gap fit with the special-shaped groove 8.

[0099] Embodiment 11:

[0100] The main structure of the embodiment is the same as any one of Embodiments 1-10, and further, the number of the N-pole main magnetic steel 3, the S-pole main magnetic steel 3, the N-pole induced magnetic steel 4 and the S-pole induced magnetic steel 4 is the same as the number of the special-shaped groove 8.

[0101] Embodiment 12:

[0102] The main structure of the embodiment is the same as any one of Embodiments 1-11, and further, referring to Figure 11 , the pressing sleeve 108 is a stepped rotary body structure, the pressing sleeve 108 is provided with a through hole IV, and the axis of the through hole IV is on the same straight line as the axis of the pressing sleeve 108.

[0103] Embodiment 13:

[0104] The main structure of the embodiment is the same as any one of Embodiments 1-12, and further, a method for using a micro permanent magnet motor rotor magnetic steel bonding tool, comprising the following steps:

[0105] 1) The open sleeve 106 is installed in the stepped hole 6 of the base 101, and the base 101 with the assembled open sleeve 106 is placed on a horizontal operation table;

[0106] 2) The rotor core 2 is inserted into the stepped hole 6 and the inner hole of the open sleeve 106, and the compression screw 107 is tightened to make the open sleeve 106 lock the shaft of the rotor core 2, so that the rotor core 2 is connected with the base 101 as a whole;

[0107] 3) The positioning frame 102 is assembled with the base 101 by using the cylindrical pin 105;

[0108] 4) The positioning block I 103 is inserted into the special-shaped groove 8, and then the N-pole main magnetic steel 3 is inserted into the recess II formed by the positioning block I 103, the positioning frame 102 and the rotor core 2, and then the positioning block I 103 is taken out, and the S-pole main magnetic steel 3 is inserted at the position where the positioning block I 103 is taken out;

[0109] 5) The bushing 5 is set on the outer wall of the rotor core 2, and the bushing 5 is pressed by the pressing sleeve 108 to axially compress the main magnetic steel 3;

[0110] 6) The positioning block II 104 is inserted into the special-shaped groove 8, and then the N-pole induction magnetic steel 4 is inserted into the recess III formed by the positioning block II 104, the positioning frame 102, the bushing 5 and the rotor core 2, and then the positioning block II 104 is taken out, and the S-pole induction magnetic steel 4 is inserted at the position where the positioning block II 104 is taken out;

[0111] 7) The positioning frame 102 is taken out, the compression screw 107 is loosened, and the rotor core 2 with the bonded magnetic steel is taken out from the base 101, thereby completing the bonding of the two groups of magnetic steel and the rotor core.

[0112] Example 14:

[0113] The main structure of the embodiment is the same as any one of examples 1-13, and the magnetic steel bonding tool is assembled by 8 types of components, all of which are made of non-magnetic stainless steel.

[0114] The base 101 is processed by drilling process using lathe, surface grinder, milling, and machining center;

[0115] The positioning frame 102 is processed by lathe, surface grinder, milling, pliers, and wire cutting process;

[0116] The positioning block I 103 and the positioning block II 104 are processed by lathe, surface grinder, wire cutting, and pliers process;

[0117] The cylindrical pin 105 is processed by lathe and external cylindrical grinding process;

[0118] The open sleeve 106 is processed by lathe, surface grinder, wire cutting, and pliers process;

[0119] The compression screw 107 is processed by lathe, milling, and pliers process;

[0120] The pressing sleeve 108 is processed by lathe and surface grinder process.

[0121] Example 15:

[0122] The main structure of the embodiment is the same as any one of examples 1-14, and the magnetic steel bonding tool for a micro permanent magnet motor is simple in structure, reliable in clamping and positioning, and convenient to operate, which is composed of one base 101, one positioning frame 102, four positioning blocks I 103, four positioning blocks II 104, two cylindrical pins 105, one open sleeve 106, one compression screw 107, and one pressing sleeve 108, and the base and the positioning frame have unified etched mark lines for distinguishing directions.

[0123] Figure 1In the permanent magnet rotor assembly drawing, the main magnetic steel and the induced magnetic steel are respectively adhered to the outer surface of the rotor core, and the two groups of magnetic steels are separated by a non-magnetic bushing. The main magnetic steel is adhered first, the bushing is installed, and finally the induced magnetic steel is adhered. The process of assembling the magnetic steel using the tool is as follows: as shown in the tool structure diagram, the base 101 is directly placed on the horizontal operation table, the rotor core shaft is installed into the inner hole of the base, and passes through the inner hole of the lower opening sleeve 106, and the compression screw 107 is tightened. By deforming the opening sleeve 106, the opening sleeve holds the rotor core shaft, so that the rotor core and the base become a whole (during the process of adhering the two groups of magnetic steels, the compression screw cannot be loosened). Figure 2 As shown in the tool structure diagram, the base 101 is directly placed on the horizontal operation table, the rotor core shaft is installed into the inner hole of the base, and passes through the inner hole of the lower opening sleeve 106, and the compression screw 107 is tightened. By deforming the opening sleeve 106, the opening sleeve holds the rotor core shaft, so that the rotor core and the base become a whole (during the process of adhering the two groups of magnetic steels, the compression screw cannot be loosened).

[0124] The positioning frame 102 is assembled on the base through the cylindrical pin 105 (the positioning pin is matched with the base with small interference, and matched with the positioning frame with small gap, which is used to ensure the relative position of the positioning frame and the base).

[0125] At this time, the center of the rotor core is consistent with the center of the positioning sleeve, 4 positioning blocks I 103 are installed into 4 special-shaped grooves of the positioning frame (the positioning block I is matched with the special-shaped groove with small gap), and then 4 N-pole main magnetic steels are inserted into 4 grooves formed by the positioning block and the positioning frame and the outer circle of the iron core. The magnetic steel is automatically adsorbed on the outer surface of the iron core due to magnetism. After taking out any one positioning block I, an S-pole main magnetic steel is inserted into the position of the positioning block, and the above process is repeated to adhere the remaining 3 S-pole magnetic steels to the surface of the rotor core;

[0126] The outer circle of the rotor core is installed into the bushing for magnetic separation, the bushing is appropriately pressed by the pressing sleeve 108, the main magnetic steel is pressed towards the axial direction; 4 positioning blocks II 104 are respectively inserted into 4 special-shaped grooves of the positioning frame (the positioning block II is also matched with the special-shaped groove with small gap), and each induced magnetic steel is adhered to the outer surface of the rotor core according to the adhesion operation mode of the main magnetic steel; the positioning frame is taken out, the compression screw is loosened, and the rotor core with adhered magnetic steel is taken out from the base, so that the adhesion of the two groups of magnetic steels and the rotor core is completed.

Claims

1. A micro permanent magnet motor rotor magnetic steel bonding tool, characterized in that, The base (101), the positioning frame (102), the positioning block I (103), the positioning block II (104), the cylindrical pin (105), the open sleeve (106), the pressing sleeve (108), the rotor core (2), the main magnetic steel (3), the induced magnetic steel (4) and the bushing (5) are included. The base (101) has at least two planes I, and the two planes I are oppositely arranged. The geometric center of the base (101) is provided with a stepped hole (6), the axis of the stepped hole (6) is perpendicular to the plane I, and the two ends of the stepped hole (6) are connected to the two planes I respectively. The positioning frame (102) has at least two planes II, and the two planes II are oppositely arranged. The geometric center of the positioning frame (102) is provided with a through hole I (7), the axis of the through hole I (7) is perpendicular to the plane II, and the two ends of the through hole I (7) are connected to the two planes II respectively. In the positioning frame (102), a plurality of special-shaped grooves (8) are arranged at intervals around the through hole I (7). The positioning frame (102) and the base (101) are connected by the cylindrical pin (105). One end of the rotor core (2) is located in the stepped hole, and the other end is located in the through hole I. The open sleeve (106) is a hollow cylindrical structure, which is attached between the inner side wall of the stepped hole (6) and the outer side wall of the rotor core (2). The positioning block I (103) and the positioning block II (104) are strip structures, and a plurality of recesses I are formed on them. When bonding the main magnetic steel (3) and the induced magnetic steel (4), first insert the positioning block I (103) into the special-shaped groove (8), then insert the N-pole main magnetic steel (3) into the recess II formed by the positioning block I (103), the positioning frame (102) and the rotor core (2); remove the positioning block I (103), and insert the S-pole main magnetic steel (3) at the position where the positioning block I (103) is removed. Embed the bushing (5) on the outer side wall of the rotor core (2), and press it tightly with the pressing sleeve (108). Then insert the positioning block II (104) into the special-shaped groove (8), and then insert the N-pole induced magnetic steel (4) into the recess III formed by the positioning block II (104), the positioning frame (102), the bushing (5) and the rotor core (2); remove the positioning block II (104), and insert the S-pole induced magnetic steel (4) at the position where the positioning block II (104) is removed. Finally, remove the positioning frame (102), and take out the rotor core (2) with the bonded magnetic steel from the base (101).

2. The rotor magnet bonding tool for a micro permanent magnet motor according to claim 1, characterized in that: The face between the two planes I is called a connecting face, and an inner hole (9) is formed on the connecting face, one end of the inner hole (9) is connected with the stepped hole (6); The axis of the inner hole (9) is perpendicular to the axis of the stepped hole (6); A through hole II (10) is formed on the position where the open sleeve (106) contacts with the inner hole (9); By tightening the pressing screw (107) passing through the inner hole (9), the open sleeve (106) is locked to the shaft of the rotor core (2), so that the rotor core (2) and the base (101) are connected as a whole.

3. The rotor magnet bonding tool of a micro permanent magnet motor according to claim 2, characterized in that: In the process of bonding the main magnetic steel (3) and the induced magnetic steel (4), the compression screw (107) is tightened.

4. The rotor magnet bonding tool for a micro permanent magnet motor according to claim 1, characterized in that: The outer wall of the plane I of the base (101) far from the positioning frame (102) is provided with an annular step (11); The outer wall of the plane II of the positioning frame (102) far from the base (101) is provided with an annular step (11).

5. The rotor magnet bonding tool for a micro permanent magnet motor according to claim 1, characterized in that: The base (101) and the positioning frame (102) are uniformly etched with a mark line for identifying the direction.

6. The rotor magnet bonding tool for a micro permanent magnet motor according to claim 1, characterized in that: The base (101) and the positioning frame (102) are provided with through holes III (12) for assembling the cylindrical pin (105); The cylindrical pin (105) and the through hole III on the base (101) adopt a small interference fit, and the through hole III on the positioning frame (102) adopts a small gap fit.

7. The rotor magnet bonding tool of a micro permanent magnet motor according to claim 1, characterized in that: The positioning block I (103) and the positioning block II (104) and the special-shaped groove (8) adopt a small gap fit.

8. The rotor magnet bonding tool of a micro permanent magnet motor according to claim 1, characterized in that: The number of the N-pole main magnetic steel (3), the S-pole main magnetic steel (3), the N-pole induced magnetic steel (4) and the S-pole induced magnetic steel (4) is the same as that of the special-shaped groove (8).

9. The rotor magnet bonding tool of a micro permanent magnet motor according to claim 1, characterized in that: The compression sleeve (108) is a stepped rotary body structure, and the compression sleeve (108) is provided with a through hole IV, and the axis of the through hole IV is on the same straight line as the axis of the compression sleeve (108).

10. A micro permanent magnet motor rotor magnetic steel bonding tooling according to any one of claims 1 to 9, characterized in that, The magnetic steel is assembled by using a tool, which comprises the following steps: 1) The open sleeve (106) is assembled in the stepped hole (6) of the base (101), and the base (101) with the assembled open sleeve (106) is placed on a horizontal operation table; 2) The rotor core (2) is inserted into the stepped hole (6) and the inner hole of the open sleeve (106), and the compression screw (107) is tightened, so that the open sleeve (106) clamps the shaft body of the rotor core (2), and the rotor core (2) and the base (101) are connected as a whole; 3) The positioning frame (102) and the base (101) are assembled together by using the cylindrical pin (105); 4) The positioning block I (103) is inserted into the special-shaped groove (8), and then the N-pole main magnetic steel (3) is inserted into the recess II formed by the positioning block I (103), the positioning frame (102) and the rotor core (2), and then the positioning block I (103) is taken out, and the S-pole main magnetic steel (3) is inserted at the position where the positioning block I (103) is taken out; 5) The bushing 5 is sleeved on the outer side wall of the rotor core 2, and the compression sleeve 108 is used to press the bushing 5 to axially compress the main magnetic steel 3; 6) The positioning block II (104) is inserted into the special-shaped groove (8), and then the N-pole induced magnetic steel (4) is inserted into the recess III formed by the positioning block II (104), the positioning frame (102), the bushing (5) and the rotor core (2), and then the positioning block II (104) is taken out, and the S-pole induced magnetic steel (4) is inserted at the position where the positioning block II (104) is taken out; 7) The positioning frame (102) is taken out, the compression screw (107) is loosened, and the rotor core (2) with the bonded magnetic steel is taken out from the base (101), so that the bonding of the two groups of magnetic steel and the rotor core is completed.

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