Motor stator frame and assembly process thereof

Abstract

The present invention relates to a motor stator base and its assembly process in the field of motor technology. The motor stator base is assembled with a stator core. The motor stator base includes a base assembly, and the base assembly includes a plurality of split bases. The split base includes a base member and at least one arc-shaped limit strip, and a dovetail groove is provided on the inner side of the arc-shaped limit strip. The stator core includes a silicon steel sheet group, and reinforcements are welded on the outer side of the silicon steel sheet group, wherein at least one arc-shaped guide bar 2 is welded on the outer side of two adjacent reinforcements, and at least one arc-shaped guide bar 1 is welded on the outer side of the remaining reinforcements. The present invention allows a plurality of split bases to be sequentially surrounded and attached to the outer wall of the stator core under the guidance of the arc-shaped limit strip and the arc-shaped guide strip until a full circle is formed, and finally the split bases are assembled. The special structural design and assembly process of the stator base of the present invention replace the traditional press-fitting process, which can effectively avoid deformation or damage of the base or the end face of the stator core caused by press-fitting, and improve product quality.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to a motor stator base and an assembly process thereof. Background Art

[0002] The motor stator frame is an important part of the motor stator. Its main function is to fix and support the stator core. The stator core is part of the motor magnetic circuit, and the stator winding is responsible for generating a rotating magnetic field. The frame must not only have sufficient mechanical strength and rigidity to fix the stator, but also be able to withstand the thermal stress generated when the motor is running and help dissipate heat.

[0003] The stator frame mainly includes two different structural types: full circle type and split type. The full circle type stator frame is an integral structure with a circular or polygonal shape. It is suitable for small and medium-sized motors and large motors where transportation conditions permit. The full circle type stator frame does not need to be split during the manufacturing, transportation and installation process and can be directly transported and installed as a whole. The split type stator frame divides the entire frame into upper and lower halves or several petals along the circumference for easy transportation, installation and maintenance. It is suitable for large motors or small and medium-sized motors that require easy installation and maintenance.

[0004] At present, the assembly of the full-circle stator frame and the stator core usually adopts the press-fitting process, and the split-type stator frame usually needs to be assembled and welded into a whole before being press-fitted with the stator core. Whether the frame is press-fitted to the outside of the stator core, or the stator core is press-fitted into the frame, the frame or stator core placed on the workbench will be subjected to pressure from the stator core or frame, causing the contact end surface of the frame or stator core and the workbench to be compressed, which can easily cause deformation or damage to the end surface after assembly, increasing the quality risk of motor failure. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions:

[0006] A motor stator base includes a base assembly, wherein the base assembly includes a plurality of petal bases, and two adjacent petal bases are fixedly connected via a reinforcing assembly. The petal base includes a base component and at least one arc-shaped limit strip, wherein the arc-shaped limit strip is embedded in the inner side of the base component, and a dovetail groove is provided in the inner side of the arc-shaped limit strip.

[0007] Furthermore, a support member is fixed to the bottom end of each base member, and a slot is provided on one side of the bottom end of the support member.

[0008] Furthermore, the reinforcement assembly includes reinforcement ribs, a plurality of reinforcement plates are welded to the outer sides of the reinforcement ribs, and the reinforcement ribs and reinforcement plates are welded and fixed between two adjacent machine base components.

[0009] Furthermore, the base assembly is assembled with the stator core, and the stator core includes a silicon steel sheet group, which is composed of a plurality of stamped silicon steel sheets stacked together. The outer side of the silicon steel sheet group is welded with reinforcement members of the same number as the split base, wherein at least one arc guide bar 2 is welded to the outer side of two adjacent reinforcement members, and at least one arc guide bar 1 is welded to the outer side of the remaining reinforcement members.

[0010] Furthermore, the length of the arc guide bar 2 is smaller than that of the arc guide bar 1, so that the arc guide bar 1 and the arc guide bar 2 are connected to form an open circular ring, and the cross-sectional shapes of the arc guide bar 1 and the arc guide bar 2 are both processed into a dovetail shape that matches the dovetail groove on the arc limit bar, and a dovetail groove is provided on the inner side of the arc limit bar so that it can slide along the dovetail-shaped arc guide bar.

[0011] The present invention also includes an assembly process of the motor stator frame, wherein the frame assembly and the stator core are assembled, and the specific steps are as follows:

[0012] Step 1: Arrange multiple split-petal machine bases in a row, and install hinges between two adjacent split-petal machine bases to form a machine base row group;

[0013] Step 2: Align the arc-shaped limit bar of the first split machine seat of the machine seat array with one end of the arc-shaped guide bar 2 of the open circular ring on the stator core, and then move the machine seat array so that the arc-shaped limit bar moves along the open circular ring, so that multiple split machine seats are sequentially surrounded and attached to the outer wall of the stator core until the machine seat array is in contact head to tail;

[0014] Step 3: Remove the hinges connected to the split machine base, then weld the reinforcing ribs and reinforcing plates between adjacent split machine bases in sequence, and then weld the reinforcing ribs to the stator core.

[0015] The present invention also includes assembly equipment used in the assembly process, including an assembly component and a conveying component arranged on one side of the assembly component, the assembly component includes a circular base, a stator core tooling is fixed on the top of the circular base, an outer ring is fixed on the outer edge of the top of the circular base, and a machine base channel for the movement of the petal machine base is formed between the inner wall of the outer ring and the outer wall of the stator core tooling.

[0016] Furthermore, a circular ring bar is fixed on the outer wall of the stator core tooling at the top of the circular base, and an annular groove is formed between the outer wall of the circular ring bar and the bottom of the inner wall of the outer ring, and the annular groove is arranged at the bottom of the machine base channel and is connected with the machine base channel; the outer ring is opened on one side close to the conveying component, and a guide groove is formed at the bottom of the outer ring opening at the top of the circular base, and the guide groove is connected with the annular groove; the conveying component includes a frame, and a driving roller group connected to each other by transmission is arranged in the frame and the guide groove, which is used to send the machine base row group into the machine base channel through the opening of the outer ring.

[0017] Furthermore, a driving rod for driving the machine base group entering the machine base channel to move is provided in the annular slide groove, and the driving rod includes an outer rod, a movable plug rod and a spring. The movable plug rod is arranged inside the outer rod and extends out of the top end of the outer rod, and the bottom end of the inner part of the outer rod is connected with the bottom end of the movable plug rod by a spring. The outer rod is slidably arranged inside the annular slide groove, and the top end of the movable plug rod is processed into an inclined surface, and the top end of the movable plug rod extends into the machine base channel, and the top end of the movable plug rod is inserted into the slot of the first petal machine base of the machine base group. When the driving rod slides along the annular slide groove, it drives the first petal machine base of the machine base group to move, so that the multiple petal machine bases of the machine base group are sequentially surrounded and fitted on the outer wall of the stator core.

[0018] Furthermore, at least one group of arc-shaped grooves are provided on the inner wall of the outer ring, and a plurality of driving wheels are provided on the inner wall of the arc-shaped grooves; the driving wheel comprises a fixed shell, a roller and a second spring, the roller is arranged inside the fixed shell and extends out of one end of the fixed shell close to the stator core tooling, the end of the roller away from the stator core tooling is connected to the inner wall of the fixed shell by a second spring, and the roller relies on the elastic force of the second spring to fit the outer wall of the petal machine base, so as to assist the movement of the petal machine base.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The motor stator base of the present invention adopts a split base structure, and a dovetail groove-shaped arc-shaped limit strip is embedded in the split base, and a dovetail-shaped arc-shaped guide bar matching the arc-shaped limit strip is welded to the outer wall of the stator core assembled with the base. The assembly process is: the split bases are arranged in a row and hinged, and under the guidance of the arc-shaped limit strip and the arc-shaped guide bar, multiple split bases are sequentially surrounded and attached to the outer wall of the stator core until the multiple split bases form a full circle, and finally the split bases are assembled into a whole. Compared with the prior art, the special structural design and assembly process of the stator base of the present invention replace the traditional press-fitting process of the base and the stator core, which can effectively avoid deformation or damage caused by the pressure exerted by the press-fitting on the end face of the base or the stator core, thereby improving product quality;

[0021] 2. The traditional split-petal stator base needs to be assembled into a full-circle base for coaxiality measurement and then assembled with the stator core. The split-petal base of the present invention directly surrounds and fits on the outer wall of the stator core in sequence. The inner walls of the multiple split-petal bases are limited by the outer wall of the stator core, which can effectively ensure the coaxiality of the multiple bases and the stator core. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the base assembly of the present invention;

[0023] Figure 2 This is a structural diagram of the petal splitting machine base of the present invention;

[0024] Figure 3 This is a bottom structural diagram of the support member of the present invention;

[0025] Figure 4 Strengthen the structural diagram of the components for the present invention;

[0026] Figure 5 This is a structural diagram of the stator core of the present invention;

[0027] Figure 6 It is a schematic diagram of the stator core structure of the present invention;

[0028] Figure 7 The assembly process of the base assembly and the stator core of the present invention is shown in FIG. Figure 1 ;

[0029] Figure 8 The assembly process of the base assembly and the stator core of the present invention is shown in FIG. Figure 2 ;

[0030] Fig. 9 This is an assembly diagram of the base assembly and the stator core of the present invention;

[0031] Fig.10 It is a cross-sectional schematic diagram of the arc-shaped limit strip and the arc-shaped guide strip after being assembled according to the present invention;

[0032] Fig.11 It is a structural diagram of the assembly equipment of the present invention;

[0033] Fig.12 It is a structural diagram of the assembly components and the conveying components of the present invention;

[0034] Fig.13 A side cross-sectional view of an assembly of the present invention;

[0035] Fig.14 for Fig.13 Enlarged view of part A in the middle;

[0036] Fig.15 It is a top view of the assembly assembly of the present invention viewed from the arc-shaped slide groove;

[0037] Fig.16 This is a structural diagram of the driving rod of the present invention;

[0038] Fig.17 This is a structural diagram of the driving wheel of the present invention.

[0039] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0040] 10 base assembly, 11 split base, 111 base member, 112 arc-shaped limit strip, 113 support member, 114 slot, 12 reinforcement assembly, 121 reinforcement rib, 122 reinforcement plate;

[0041] 20 stator core, 21 silicon steel sheet group, 22 reinforcement member, 23 arc-shaped guide bar 1, 24 arc-shaped guide bar 2;

[0042] 30 assembly equipment, 31 assembly components, 311 circular base, 312 stator core tooling, 313 outer ring, 314 machine base channel, 315 circular ring bar, 316 annular slide, 317 driving rod, 3171 outer rod, 3172 movable plug rod, 3173 spring one;

[0043] 318 arc-shaped slide, 319 driving wheel, 3191 fixed shell, 3192 roller, 3193 spring 2;

[0044] 320 guide groove;

[0045] 32 conveying assembly, 321 frame, 322 driving roller group. DETAILED DESCRIPTION

[0046] The preferred specific embodiments for implementing the present invention are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0047] See also Figure 1-4 The present invention provides a motor stator base, including a base assembly 10, wherein the base assembly 10 includes a plurality of petal bases 11. The motor stator base of the petal structure of the present invention can be applied to medium-sized motors, and is convenient for transportation, installation and maintenance. The petal base 11 includes a base member 111 and at least one arc-shaped limit strip 112, wherein the arc-shaped limit strip 112 is embedded in the inner side of the base member 111, and a dovetail groove is provided on the inner side of the arc-shaped limit strip 112. A support member 113 is fixed to the bottom end of each base member 111, and a slot 114 is provided on one side of the bottom end of the support member 113.

[0048] Two adjacent flap machine bases 11 are fixedly connected via a reinforcing assembly 12 , which includes reinforcing ribs 121 , and a plurality of reinforcing plates 122 are welded to the outside of the reinforcing ribs 121 . The reinforcing ribs 121 and the reinforcing plates 122 are both welded and fixed between two adjacent machine base components 111 .

[0049] See also Figure 5-6 The present invention further provides a stator core 20 assembled with the base assembly 10, wherein the stator core 20 comprises a silicon steel sheet group 21, wherein the silicon steel sheet group 21 is composed of a plurality of stamped silicon steel sheets stacked together, and the outer side of the silicon steel sheet group 21 is welded with reinforcement pieces 22 having the same number as the split base 11, wherein at least one arc-shaped guide bar 24 is welded to the outer side of two adjacent reinforcement pieces 22, and at least one arc-shaped guide bar 1 23 is welded to the outer side of the remaining reinforcement pieces 22;

[0050] The length of the arc-shaped guide bar 24 is less than the length of the arc-shaped guide bar 1 23, so that the arc-shaped guide bar 1 23 and the arc-shaped guide bar 2 24 are connected to form an open circular ring, and the cross-sectional shapes of the arc-shaped guide bar 1 23 and the arc-shaped guide bar 2 24 are processed into a dovetail shape that matches the dovetail groove on the arc-shaped limit bar 112, such as Fig.10 shown.

[0051] The assembly process of the stator core 20 is as follows: first, a plurality of stamped silicon steel sheets are stacked in sequence to form a silicon steel sheet group 21, and then a reinforcement 22 is welded on the outside of the silicon steel sheet group 21, and then an arc-shaped conductor bar 1 23 and an arc-shaped conductor bar 2 24 are welded on the reinforcement 22, and finally, the connection between two adjacent arc-shaped conductor bars 1 23 and the connection between arc-shaped conductor bar 1 23 and arc-shaped conductor bar 2 24 are welded, and finally, the arc-shaped conductor bar 1 23 and the arc-shaped conductor bar 2 24 are welded and reinforced to the silicon steel sheet group 21.

[0052] In order to facilitate the assembly of the base assembly 10 and the stator core 20, as shown in FIG. Figure 11-17 As shown, the present invention also provides an assembly device 30 used in the assembly process of the machine base assembly 10 and the stator core 20. The assembly device 30 includes an assembly component 31 and a conveying component 32 arranged on one side of the assembly component 31. The assembly component 31 includes a circular base 311. A stator core tooling 312 is fixed on the top of the circular base 311. During assembly, the stator core 20 is sleeved on the stator core tooling 312. The tooling of the prior art can be selected to fix the stator core 20 from the inside. An outer ring 313 is fixed on the outer edge of the top of the circular base 311, and a ring-shaped machine base channel 314 for the split machine base 11 to move is formed between the inner wall of the outer ring 313 and the outer wall of the stator core tooling 312.

[0053] Next, a circular ring bar 315 is fixed on the outer wall of the stator core fixture 312 at the top of the circular base 311 , and an annular groove 316 is formed between the outer wall of the circular ring bar 315 and the bottom of the inner wall of the outer ring 313 . The annular groove 316 is arranged at the bottom of the base channel 314 and is connected to the base channel 314 .

[0054] The outer ring 313 is opened on one side close to the conveying component 32, and a guide groove 320 is provided at the bottom of the top of the circular base 311 located at the opening of the outer ring 313, and the guide groove 320 is connected to the annular slide groove 316; the conveying component 32 includes a frame 321, and a driving roller group 322 that is mutually connected is provided in the frame 321 and the guide groove 320. The driving roller group 322 can be driven to rotate by a motor or other equipment. Before assembly, a plurality of petal machine bases 11 are arranged in a row, and hinges are installed between two adjacent petal machine bases 11 for hinged connection to form a machine base row group. The more petal machine bases 11 there are, the more the inner side of the machine base row group tends to be flat. The driving roller group 322 can be used to send the machine base row group into the machine base channel 314 through the opening of the outer ring 313.

[0055] After the machine base row group is sent into the machine base channel 314 by the conveying assembly 32, in order to drive the machine base row group to move, a driving rod 317 for driving the machine base row group entering the machine base channel 314 to move is provided in the annular slide groove 316, and the driving rod 317 includes an outer rod 3171, a movable plug rod 3172 and a spring 1 3173, the movable plug rod 3172 is arranged inside the outer rod 3171 and extends out of the top of the outer rod 3171, and the inner bottom end of the outer rod 3171 and the bottom end of the movable plug rod 3172 are connected by a spring 1 3173;

[0056] The outer rod 3171 is slidably arranged inside the annular groove 316, the top end of the movable rod 3172 is processed into an inclined surface, and the top end of the movable rod 3172 extends into the machine base channel 314, and the top end of the movable rod 3172 is inserted into the slot 114 of the first petal machine base 11 of the machine base group. When the driving rod 317 slides along the annular groove 316, it drives the first petal machine base 11 of the machine base group to move, so that the multiple petal machine bases 11 of the machine base group are sequentially surrounded and fitted on the outer wall of the stator core 20.

[0057] The driving rod 317 can be driven to rotate using an existing driving structure. This embodiment uses an example of a driving structure: Figure 13-14 As shown, an outer gear ring that can rotate around the center of the circular base 311 is connected to the top of the circular base 311, and the outer rod 3171 of the driving rod 317 is fixed to the top of the outer gear ring, and then a mounting groove is opened on the outside of the circular base 311, and the mounting groove is closed by a cover plate. A motor is fixed in the mounting groove, and a gear is fixed on the output shaft of the motor. The gear meshes with the gear teeth on the outer wall of the outer gear ring. The outer gear ring is driven to rotate by the motor driving the gear, thereby driving the driving rod 317 to rotate in the annular groove 316.

[0058] In order to assist the movement of the petal-splitting machine base 11, at least one group of arc-shaped grooves 318 are opened on the inner wall of the outer ring 313, and a plurality of driving wheels 319 are arranged on the inner wall of the arc-shaped grooves 318. The driving wheels 319 include a fixed shell 3191, a roller 3192 and a second spring 3193. The roller 3192 is arranged inside the fixed shell 3191 and extends out of the end of the fixed shell 3191 close to the stator core tooling 312. The end of the roller 3192 away from the stator core tooling 312 is connected to the inner wall of the fixed shell 3191 through the second spring 3193. The roller 3192 fits the outer wall of the petal-splitting machine base 11 by the elastic force of the second spring 3193. In practice, multiple rollers 3192 can be connected in sequence by a transmission structure such as a pulley transmission assembly, and then a motor can be used to drive the multiple rollers to rotate in the same direction. When the petal-splitting machine base 11 contacts the roller 3192, it can assist in driving the petal-splitting machine base 11 to move.

[0059] The specific steps of assembling the stator frame and the stator core 20 of the present invention are as follows:

[0060] Step 1: Arrange multiple flap machine bases 11 in a row, and install hinges between two adjacent flap machine bases 11 to form a machine base row group. Therefore, threaded holes need to be opened on both sides of the flap machine base 11 during processing to facilitate the use of bolts to fix the hinges and the flap machine base 11;

[0061] Step 2: The robot places the stator core 20 on the stator core tooling 312 and fixes it, and then places the machine base row group on the conveying assembly 32, and starts the driving roller group 322 to guide the machine base row group into the machine base channel 314 through the opening of the outer ring 313. When the support member 113 of the first split machine base 11 passes through the inclined surface of the movable plug rod 3172 on the driving rod 317, the support member 113 presses the movable plug rod 3172 downward, and then the movable plug rod 3172 is inserted into the slot 114 of the support member 113 under the elastic force of the spring 1 3173. At this time, the arc-shaped limit bar 112 of the first split machine base 11 of the machine base row group is aligned with one end of the arc-shaped guide bar 24 of the open circular ring on the stator core 20, as shown in FIG. Figure 7 As shown;

[0062] Step 4: The driving rod 317 moves along the annular slide groove 316 to drive the machine base row group to move around the outer wall of the stator core 20, and at the same time, the arc-shaped limit bar 112 moves along the open circular ring, so that the multiple petal machine bases 11 are sequentially surrounded and attached to the outer wall of the stator core 20 until the machine base row group is in contact head to tail, that is, the multiple petal machine bases 11 form a full circle;

[0063] Step 5: Then the robot takes out the stator core 20 and the machine base assembly from the assembly device 30, and removes the hinge connected to the split machine base 11. Figure 8 As shown, the reinforcing ribs 121 and the reinforcing plates 122 are then welded in sequence between the adjacent split machine frames 11, and then the reinforcing ribs 121 and the stator core 20 are welded and reinforced, as shown in FIG. Fig. 9 As shown, the assembly of the stator frame and the stator core 20 is completed.

[0064] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the present invention. In addition, any non-creative modifications made to the present invention by those skilled in the art without creative work still fall within the protection scope of the present invention.

Claims

1. A motor stator frame, characterized in that: It comprises a machine base assembly (10), wherein the machine base assembly (10) comprises a plurality of petal machine bases (11), and two adjacent petal machine bases (11) are fixedly connected via a reinforcing assembly (12); The split-flap machine base (11) comprises a machine base component (111) and at least one arc-shaped limiting strip (112), wherein the arc-shaped limiting strip (112) is embedded inside the machine base component (111), and a dovetail groove is provided inside the arc-shaped limiting strip (112); The base assembly (10) is assembled with the stator core (20), the stator core (20) comprising a silicon steel sheet group (21), the silicon steel sheet group (21) being composed of a plurality of stamped silicon steel sheets stacked together, the silicon steel sheet group (21) being welded with reinforcement pieces (22) having the same number as the split base (11) on the outside, wherein at least one arc-shaped guide bar 2 (24) is welded on the outside of two adjacent reinforcement pieces (22), and at least one arc-shaped guide bar 1 (23) is welded on the outside of the remaining reinforcement pieces (22); The length of the arc-shaped guide bar 2 (24) is smaller than the length of the arc-shaped guide bar 1 (23), so that the arc-shaped guide bar 1 (23) and the arc-shaped guide bar 2 (24) are connected to form an open circular ring, and the cross-sectional shapes of the arc-shaped guide bar 1 (23) and the arc-shaped guide bar 2 (24) are both processed into a dovetail shape that matches the dovetail groove on the arc-shaped limit bar (112).

2. The motor stator frame according to claim 1, characterized in that: A support member (113) is fixed to the bottom end of each machine base member (111), and a slot (114) is provided on one side of the bottom end of the support member (113).

3. The motor stator frame according to claim 2, characterized in that: The reinforcement assembly (12) comprises a reinforcement rib (121), a plurality of reinforcement plates (122) are welded to the outside of the reinforcement rib (121), and the reinforcement rib (121) and the reinforcement plates (122) are both welded and fixed between two adjacent machine base components (111).

4. The assembly process of the motor stator frame according to claim 3, characterized in that: The base assembly (10) and the stator core (20) are assembled in the following specific steps: Step 1: arranging a plurality of split-flap machine bases (11) in a row, installing hinges between two adjacent split-flap machine bases (11) for hinged connection, and forming a machine base row group; Step 2: aligning the arc-shaped limit bar (112) of the first split machine base (11) of the machine base array with one end of the arc-shaped guide bar 2 (24) of the open circular ring on the stator core (20), and then moving the machine base array so that the arc-shaped limit bar (112) moves along the open circular ring, thereby allowing the plurality of split machine bases (11) to surround and fit the outer wall of the stator core (20) in sequence until the machine base array is in contact head to tail; Step 3: Remove the hinges connected to the split machine base (11), then weld the reinforcing ribs (121) and the reinforcing plates (122) in sequence between adjacent split machine bases (11), and then weld the reinforcing ribs (121) to the stator core (20).

5. The assembly process according to claim 4, characterized in that: The assembly equipment (30) used in the process comprises an assembly component (31) and a conveying component (32) arranged on one side of the assembly component (31), wherein the assembly component (31) comprises a circular base (311), a stator core tooling (312) is fixed to the top of the circular base (311), an outer ring (313) is fixed to the outer edge of the top of the circular base (311), and a base channel (314) for the movement of the split base (11) is formed between the inner wall of the outer ring (313) and the outer wall of the stator core tooling (312).

6. The assembly process according to claim 5, characterized in that: A circular ring bar (315) is fixed to the top of the circular base (311) on the outer wall of the stator core tooling (312), an annular groove (316) is formed between the outer wall of the circular ring bar (315) and the bottom of the inner wall of the outer ring (313), and the annular groove (316) is arranged at the bottom of the machine base channel (314) and communicates with the machine base channel (314); The outer ring (313) is opened at one side close to the conveying assembly (32); the top of the circular base (311) is located at the bottom of the opening of the outer ring (313) and is provided with a guide groove (320), and the guide groove (320) is communicated with the annular slide groove (316); The conveying assembly (32) comprises a frame (321), wherein a driving roller group (322) which is transmission-connected to each other is provided in the frame (321) and in the guide groove (320), and is used to convey the machine base row group into the machine base channel (314) through the opening of the outer ring (313).

7. The assembly process according to claim 6, characterized in that: The annular slide groove (316) is provided with a driving rod (317) for driving the machine base row group entering the machine base channel (314) to move, the driving rod (317) comprising an outer rod (3171), a movable plug rod (3172) and a spring (3173), the movable plug rod (3172) being arranged inside the outer rod (3171) and extending out of the top of the outer rod (3171), and the bottom end of the inner part of the outer rod (3171) and the bottom end of the movable plug rod (3172) are connected via a spring (3173); The outer rod (3171) is slidably arranged inside the annular groove (316), the top end of the movable rod (3172) is processed into an inclined surface, and the top end of the movable rod (3172) extends into the machine base channel (314), and the top end of the movable rod (3172) is inserted into the slot (114) of the first split machine base (11) of the machine base group. When the driving rod (317) slides along the annular groove (316), the first split machine base (11) of the machine base group is driven to move, so that the multiple split machine bases (11) of the machine base group are sequentially surrounded and fitted on the outer wall of the stator core (20).

8. The assembly process according to claim 5, characterized in that: The inner wall of the outer ring (313) is provided with at least one group of arc-shaped sliding grooves (318), and the inner wall of the arc-shaped sliding grooves (318) is provided with a plurality of driving wheels (319); The driving wheel (319) comprises a fixed shell (3191), a roller (3192) and a second spring (3193); the roller (3192) is arranged inside the fixed shell (3191) and extends out of one end of the fixed shell (3191) close to the stator core tooling (312); one end of the roller (3192) away from the stator core tooling (312) is connected to the inner wall of the fixed shell (3191) via the second spring (3193); the roller (3192) is fitted to the outer wall of the petal splitting machine base (11) by means of the elastic force of the second spring (3193) to assist the petal splitting machine base (11) in moving.

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