Stator assembly jig for automatic micromotor assembly line

Abstract

The invention relates to the technical field of automatic micromotor assembly lines, in particular to an automatic micromotor assembly line stator assembly jig which comprises a jig disc and a jig shaft. The jig disc comprises a jig disc aluminum base body, a jig shaft radial positioning shaft and a flow guide bearing. The jig shaft comprises a transfer axial positioning shaft, a transfer radial positioning seat, a graphite bearing sliding sleeve, a silicon steel sheet iron core stator positioning shaft, a bearing alloy seat positioning shaft, an enameled wire tensioning shaft, a silicon steel sheet iron core stator positioning shaft reset spring end socket, a silicon steel sheet iron core stator upper limiting buckle, a silicon steel sheet iron core stator lower limiting adjusting pad and a pull rod plug. A bearing alloy seat positioning shaft pull rod, a silicon steel sheet iron core stator positioning shaft reset spring, a silicon steel sheet iron core stator upper limiting buckle rotating shaft, a silicon steel sheet iron core stator upper limiting buckle reset spring, an enameled wire tensioning shaft reset spring and an enameled wire tensioning shaft upper limiting shaft; one-time clamping and automatic circulation of working procedures such as wire winding, bearing alloy seat press fitting and wire arranging welding are achieved.

Description

Technical Field

[0001] This invention relates to the field of automatic assembly line technology for micro motors, specifically a stator assembly fixture for an automatic assembly line for micro motors. Background Technology

[0002] Stator assembly of micro motors is one of the core processes in micro motor production, and its assembly quality directly affects the performance and service life of the micro motor. In existing technologies, micro motor stator assembly mainly relies on manual labor combined with specialized machines. Taking the production of a 52 micro motor as an example, the specific process includes the following five key steps: Motor core winding: The winding machine is used to manually load and unload the wires, winding three sets of wires to form six wire ends; The circuit board is mounted on the bearing alloy seat: the screw machine is operated manually to complete the loading and unloading. The circuit board is equipped with a three-pin socket male terminal and three solder points for soldering the wire ends of the iron core winding. Pressing the bearing alloy housing into the iron core: The bearing alloy housing for mounting the circuit board is manually pressed into the wound iron core stator using a press. Wire management and soldering: Manually clean the enameled wire ends, cut off the excess parts, and solder the six wire ends to the corresponding solder points on the circuit board; Bearing press-fitting: Two bearings of different specifications are manually pressed into the stator bearing housing using a press.

[0003] The aforementioned prior art has the following significant drawbacks: High demand for manpower: All five processes require manual participation, and the conventional production mode requires at least 10 operators; The process is cumbersome and prone to errors: The procedures for wire management and welding are complex, and problems such as improper handling of wire ends and misalignment of welding are easy to occur during manual operation. Difficulty in coordinating production efficiency: The time taken for each process varies, requiring different numbers of employees to balance capacity, resulting in high management costs. High requirements for operators: Each process requires employees to be proficient in the debugging and operation of special machines, resulting in a long training cycle and high labor costs; Unstable product quality: Individual differences in manual operation, fatigue, and other factors can easily lead to fluctuations in product assembly accuracy and welding quality, making it difficult to guarantee the yield rate.

[0004] Therefore, there is an urgent need for a fixture that can achieve integrated, automated flow and positioning of key stator assembly processes, in order to solve the problems of existing technologies that rely on manual labor, have high costs, and unstable quality. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides a stator assembly fixture for an automated assembly line of micro motors.

[0006] The technical solution adopted by this invention to solve its technical problem is: a stator assembly fixture for an automatic assembly line of micro motors, including a fixture disk and a fixture shaft; the fixture disk includes an aluminum substrate, a radial positioning shaft, and a guide bearing; the aluminum substrate has a positioning hole in the middle; four guide bearings are provided and installed on the aluminum substrate; the fixture shaft includes a transfer axial positioning shaft, a transfer radial positioning seat, a graphite bearing sleeve, a silicon steel core stator positioning shaft, a bearing alloy seat positioning shaft, an enameled wire tensioning shaft, a silicon steel core stator positioning shaft return spring end cap, a silicon steel core stator upper limit buckle, a silicon steel core stator lower limit adjustment pad, a pull rod end cap, a bearing alloy seat positioning shaft pull rod, a silicon steel core stator positioning shaft return spring, a silicon steel core stator upper limit buckle rotating shaft, a silicon steel core stator upper limit buckle return spring, an enameled wire tensioning shaft return spring, and an enameled wire tensioning shaft upper limit shaft.

[0007] Specifically, the axial positioning shaft of the jig shaft is slidably engaged with the positioning hole of the jig disk, and the radial positioning seat of the jig shaft is provided with two radial positioning holes, and the two radial positioning holes are slidably engaged with the radial positioning shaft of the jig disk.

[0008] Specifically, the outer wall of the transfer radial positioning seat is provided with a clamping groove for the loading and unloading claws of the robotic arm, and the width of the groove is adapted to the thickness of the robotic arm claws.

[0009] Specifically, the outer circumferential surface of the silicon steel sheet core stator positioning shaft is provided with an axial positioning shaft section and an annular radial positioning boss. The upper limit buckle of the silicon steel sheet core stator is installed on the side wall of the fixture shaft through a rotating shaft. The lower limit adjustment pad of the silicon steel sheet core stator has an annular structure and is sleeved on the bottom of the silicon steel sheet core stator positioning shaft.

[0010] Specifically, the outer circumferential surface of the bearing alloy seat positioning shaft is provided with an axial positioning shaft section and an annular radial positioning boss, and the middle part of the silicon steel sheet core stator positioning shaft is provided with an annular bearing alloy seat lower positioning boss. The upper surface of the bearing alloy seat lower positioning boss cooperates with the axial positioning shaft section of the bearing alloy seat positioning shaft.

[0011] Specifically, the outer wall of the pull rod plug is provided with external threads, and the bottom of the fixture shaft is provided with an internal thread hole that matches the external threads. The pull rod plug is installed at the bottom of the fixture shaft by a threaded connection, and the top of the pull rod plug contacts the bottom of the bearing alloy seat positioning shaft pull rod.

[0012] Specifically, the lower end of the enameled wire tensioning shaft extends into the mounting hole at the top of the fixture shaft. The return spring of the enameled wire tensioning shaft is sleeved on the outer periphery of the extended section of the enameled wire tensioning shaft, and both ends of the spring abut against the stepped surface of the enameled wire tensioning shaft and the bottom of the mounting hole, respectively. The upper limit shaft of the enameled wire tensioning shaft passes laterally through the top side wall of the fixture shaft and extends into the limiting groove of the enameled wire tensioning shaft, limiting the maximum upward floating position of the enameled wire tensioning shaft. The compression limit of the return spring of the enameled wire tensioning shaft limits the maximum downward sinking position of the enameled wire tensioning shaft.

[0013] Specifically, the graphite bearing sleeve has an annular structure and is fitted into the axial positioning hole of the fixture shaft. The inner hole of the graphite bearing sleeve is in sliding fit with the outer circumferential surface of the silicon steel core stator positioning shaft. The radial positioning boss of the silicon steel core stator positioning shaft is coaxially arranged with the radial positioning boss of the bearing alloy seat positioning shaft, and the radial dimensions of the two are compatible.

[0014] Specifically, the upper limit buckle of the silicon steel core stator is rotatably connected to the side wall of the fixture shaft via the upper limit buckle rotating shaft. One end of the return spring of the upper limit buckle is fixed to the side wall of the fixture shaft, and the other end is fixed to the inner side wall of the upper limit buckle.

[0015] Specifically, a return spring for the silicon steel sheet core stator positioning shaft is sleeved on the outer circumferential surface of the silicon steel sheet core stator positioning shaft. One end of the spring abuts against the bottom stepped surface of the silicon steel sheet core stator positioning shaft, and the other end abuts against the spring seat inside the fixture shaft.

[0016] The beneficial effects of this invention are: (1) The stator assembly fixture of the micro motor automatic assembly line described in this invention greatly reduces the need for manpower: the prior art requires more than 10 skilled workers, while this invention realizes the integrated flow and automated processing of key processes through the fixture, requiring only one ordinary employee to complete the loading, and the employee can be put to work after simple training, which significantly reduces labor costs and training costs.

[0017] (2) The micro motor automatic assembly line stator assembly fixture described in this invention simplifies the operation process: it realizes the one-time clamping of silicon steel sheet core stator and bearing alloy seat, and is suitable for multiple processes such as winding, pressing, wire arrangement and welding, avoiding manual repeated loading and unloading and positioning, and simplifying the production process.

[0018] (3) The stator assembly fixture of the automatic assembly line of micro motor described in this invention improves positioning accuracy and product quality: through axial and radial positioning structure and linkage limit design, the relative position accuracy of each component is guaranteed, avoiding positioning deviation and welding misalignment caused by manual operation; the enameled wire tension adjustment structure prevents the wire end from falling off and slipping out, further improving the stability of assembly quality.

[0019] (4) The stator assembly fixture of the automatic assembly line of micro motor described in this invention has strong adaptability: through the adjustable design of the pull rod plug, it can be adapted to silicon steel sheet core stators of different thicknesses, thus expanding the application range.

[0020] (5) The stator assembly fixture of the micro motor automatic assembly line described in this invention improves production efficiency: the fixture is precisely adapted to the assembly line, robotic arm and various processing equipment to realize the automatic connection of each process, without the need to coordinate the manual allocation of different processes, thereby improving the overall production efficiency. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the aluminum substrate of the jig disc and the flow guide bearing of the present invention; Figure 3 This is a schematic diagram of the connection structure between the axial positioning shaft and the radial positioning seat of the present invention. Figure 4 for Figure 3 Vertical sectional view of the structure; Figure 5 This is a schematic diagram of the connection structure between the silicon steel sheet core stator positioning shaft and the silicon steel sheet core stator upper limit buckle of the present invention. Figure 6 This indicates the location of the invention in the automated assembly line for micro-motors; Figure 7 for Figure 6 The diagram shows an enlarged view of part A.

[0023] In the diagram: 1. Fixture disc; 2. Fixture shaft; 3. Fixture disc aluminum base; 4. Fixture shaft radial positioning shaft; 5. Guide bearing; 6. Transfer shaft axial positioning shaft; 7. Transfer radial positioning seat; 8. Graphite bearing sleeve; 9. Silicon steel core stator positioning shaft; 10. Bearing alloy seat positioning shaft; 11. Enamelled wire tensioning shaft; 12. Silicon steel core stator positioning shaft return spring end cap; 13. Silicon steel core stator upper limit buckle; 14. Silicon steel core stator lower limit adjusting shim; 15. Pull rod plug; 16. Bearing alloy seat positioning shaft pull rod; 17. Silicon steel core stator positioning shaft return spring; 18. Silicon steel core stator upper limit buckle rotating shaft; 19. Silicon steel core stator upper limit buckle return spring; 20. Enamelled wire tensioning shaft return spring; 21. Enamelled wire tensioning shaft upper limit shaft. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] like Figure 1-7 As shown, a stator assembly fixture for an automated micro-motor assembly line according to the present invention includes a fixture disk 1 and a fixture shaft 2. The fixture disk 1 includes a fixture disk aluminum base 3, a fixture shaft radial positioning shaft 4, and a guide bearing 5. The fixture disk aluminum base 3 has a positioning hole in the middle, and four guide bearings 5 ​​are provided and installed on the fixture disk aluminum base 3. The fixture shaft 2 includes a transfer axial positioning shaft 6, a transfer radial positioning seat 7, a graphite bearing sleeve 8, a silicon steel sheet core stator positioning shaft 9, and a bearing alloy seat positioning shaft. Shaft 10, enameled wire tensioning shaft 11, silicon steel sheet core stator positioning shaft return spring end cap 12, silicon steel sheet core stator upper limit buckle 13, silicon steel sheet core stator lower limit adjustment pad 14, pull rod plug 15, bearing alloy seat positioning shaft pull rod 16, silicon steel sheet core stator positioning shaft return spring 17, silicon steel sheet core stator upper limit buckle rotating shaft 18, silicon steel sheet core stator upper limit buckle return spring 19, enameled wire tensioning shaft return spring 20, and enameled wire tensioning shaft upper limit shaft 21.

[0026] Specifically, the axial positioning shaft 6 of the jig shaft 2 is slidably engaged with the positioning hole of the jig disk 1, and the radial positioning seat 7 is provided with two radial positioning holes, which are slidably engaged with the radial positioning shaft 4 of the jig shaft of the jig disk 1, so as to realize the axial and radial posture positioning of the jig shaft 2 during the circulation process.

[0027] Specifically, the outer wall of the transfer radial positioning seat 7 is provided with a mechanical arm loading and unloading gripper groove. The width of the groove is adapted to the thickness of the mechanical arm gripper, and is used for the mechanical arm to hold the fixture shaft 2 to complete the transfer operation between each process.

[0028] Specifically, the outer circumferential surface of the silicon steel sheet core stator positioning shaft 9 is provided with an axial positioning shaft section and an annular radial positioning boss. The upper limit buckle 13 of the silicon steel sheet core stator is installed on the side wall of the fixture shaft 2 through a rotating shaft. The lower limit adjustment pad 14 of the silicon steel sheet core stator has an annular structure and is sleeved on the bottom of the silicon steel sheet core stator positioning shaft 9. The three work together to realize the axial and radial positioning and upper and lower limit of the silicon steel sheet core stator.

[0029] Specifically, the outer circumferential surface of the bearing alloy seat positioning shaft 10 is provided with an axial positioning shaft section and an annular radial positioning boss, and the middle part of the silicon steel sheet core stator positioning shaft 9 is provided with an annular bearing alloy seat lower positioning boss. The upper surface of the bearing alloy seat lower positioning boss cooperates with the axial positioning shaft section of the bearing alloy seat positioning shaft 10 to jointly ensure the positioning of the bearing alloy seat of the circuit board and the radial relative position accuracy with the silicon steel sheet core stator.

[0030] Specifically, the outer wall of the pull rod plug 15 is provided with an external thread, and the bottom of the fixture shaft 2 is provided with an internal thread hole that matches the external thread. The pull rod plug 15 is installed at the bottom of the fixture shaft 2 by a threaded connection, and the top of the pull rod plug 15 contacts the bottom of the bearing alloy seat positioning shaft pull rod 16. By rotating and adjusting the up and down position of the pull rod plug 15, the bearing alloy seat positioning shaft 10 and the silicon steel sheet core stator upper limit buckle 13 can be moved synchronously to adapt to silicon steel sheet core stators of different thicknesses.

[0031] Specifically, the lower end of the enameled wire tensioning shaft 11 extends into the mounting hole at the top of the fixture shaft 2. The enameled wire tensioning shaft return spring 20 is sleeved on the outer periphery of the extended section of the enameled wire tensioning shaft 11, and both ends of the spring abut against the stepped surface of the enameled wire tensioning shaft 11 and the bottom of the mounting hole, respectively. The upper limit shaft 21 of the enameled wire tensioning shaft passes laterally through the top side wall of the fixture shaft 2 and extends into the limiting groove of the enameled wire tensioning shaft 11, limiting the maximum upward floating position of the enameled wire tensioning shaft 11. The compression limit of the enameled wire tensioning shaft return spring 20 limits the maximum downward sinking position of the enameled wire tensioning shaft 11.

[0032] Specifically, the graphite bearing sleeve 8 has an annular structure and is fitted into the axial positioning hole of the fixture shaft 2, and the inner hole of the graphite bearing sleeve 8 slides in fit with the outer circumferential surface of the silicon steel core stator positioning shaft 9; the radial positioning boss of the silicon steel core stator positioning shaft 9 is coaxially arranged with the radial positioning boss of the bearing alloy seat positioning shaft 10, and the radial dimensions of the two are matched to ensure that there is no radial misalignment during the press-fitting of the bearing alloy seat.

[0033] Specifically, the silicon steel sheet core stator upper limit stop 13 is rotatably connected to the side wall of the fixture shaft 2 via the silicon steel sheet core stator upper limit stop rotating shaft 18. One end of the silicon steel sheet core stator upper limit stop return spring 19 is fixed to the side wall of the fixture shaft 2, and the other end is fixed to the inner side wall of the silicon steel sheet core stator upper limit stop 13. During the pressing process of the bearing alloy seat, when the silicon steel sheet core stator positioning shaft 9 is pressed downward, it can squeeze the silicon steel sheet core stator upper limit stop 13 to rotate and close around the rotating shaft. After pressing into place, the silicon steel sheet core stator upper limit stop return spring 19 drives the stop to reset and realize the upper limit position of the assembly. When the stator is unloaded, the stop is closed by the squeezing force inside the robotic arm and rotates around the rotating shaft, releasing the assembly.

[0034] Specifically, a silicon steel sheet core stator positioning shaft 17 is fitted with a silicon steel sheet core stator positioning shaft return spring on its outer circumferential surface. One end of the spring abuts against the bottom stepped surface of the silicon steel sheet core stator positioning shaft 9, and the other end abuts against the spring seat inside the fixture shaft 2. When the bearing alloy seat is pressed in, the spring is compressed and stores force. After the pressing is completed, it is used to push out the assembly when the stator is unloaded and drive the silicon steel sheet core stator positioning shaft 9 to return to its initial position.

[0035] The working process of this invention is as follows: Manual material preparation: Based on the thickness of the silicon steel sheet core stator to be assembled, adjust the upper and lower positions of the pull rod plug 15 so that the distance between the upper limit buckle 13 and the lower limit adjustment pad 14 of the silicon steel sheet core stator matches the stator thickness; the employee installs the silicon steel sheet core stator onto the silicon steel sheet core stator positioning shaft 9, achieving radial positioning through the radial positioning boss, and upper and lower limits through the upper limit buckle 13 and the lower limit adjustment pad 14; install the bearing alloy seat with the circuit board installed onto the bearing alloy seat positioning shaft 10, achieving precise positioning through the axial positioning shaft, radial positioning boss, and lower positioning boss of the bearing alloy seat; Flow and winding: Fixture tray 1 carries fixture shaft 2 and flows to the winding station via the conveyor belt. The aluminum alloy profile baffle of the conveyor belt cooperates with the guide bearing 5 to ensure the smooth flow of fixture tray 1. The robotic arm of the winding station clamps fixture shaft 2 through the gripper groove of the transfer radial positioning seat 7. After being released from fixture tray 1, it is transferred to the four-station winding machine. The winding machine completes the winding of three sets of wires and fixes the six enameled wire ends at the designated positions of the enameled wire tensioning shaft 11. Bearing alloy seat press fitting: After winding, the robotic arm transfers fixture shaft 2 to the bearing alloy seat press station; the upper die of the press is aligned with the top of the bearing alloy seat and pressure is applied downwards, causing the bearing alloy seat to push the silicon steel sheet core stator positioning shaft 9 to compress the silicon steel sheet core stator positioning shaft return spring 17 downwards; during the downward movement, the silicon steel sheet core stator positioning shaft 9 presses the silicon steel sheet core stator upper limit buckle 13, causing it to rotate around the silicon steel sheet core stator upper limit buckle rotating shaft 18, compressing the silicon steel sheet core stator upper limit buckle return spring 19; simultaneously, the graphite bearing sleeve 8 ensures axial positioning. The radial positioning bosses of the silicon steel sheet core stator positioning shaft 9 and the bearing alloy seat positioning shaft 10 ensure radial positioning and avoid misalignment. When the bearing alloy seat is pressed into the silicon steel sheet core stator, the upper limit buckle reset spring 19 of the silicon steel sheet core stator releases pressure, driving the upper limit buckle 13 of the silicon steel sheet core stator to reset, thus positioning the assembly at the upper limit. During the pressing process, the enameled wire pulls the enameled wire tensioning shaft 11 up and down, and the enameled wire tensioning shaft reset spring 20 adjusts the tension in real time to ensure that the enameled wire always maintains a suitable tension, preventing the wire end from falling off or slipping out of the circuit board solder pad groove. Wire handling and welding: The robotic arm transfers the press-fitted jig shaft 2 to the enameled wire spot welding machine station. The spot welding machine automatically cleans, cuts and welds the enameled wire ends, welding the six wire ends to the corresponding solder points on the circuit board. Stator Unloading: After welding is completed, the robotic arm transfers the fixture shaft 2 to the stator unloading station. The robotic arm of the unloading device extends into the fixture shaft 2, squeezing the upper limit buckle 13 of the silicon steel core stator, causing it to rotate and close around the shaft. The upper limit buckle return spring 19 of the silicon steel core stator is compressed, releasing the upper limit of the assembly. At this time, the compressed silicon steel core stator positioning shaft return spring 17 releases pressure, pushing the silicon steel core stator positioning shaft 9 upward, pushing out the assembly of the bearing alloy seat and the silicon steel core stator into the gripper of the unloading robotic arm. The unloading robotic arm holds the assembly and moves it upward, while the silicon steel core stator positioning shaft return spring 17 continues to release pressure, causing the silicon steel core stator positioning shaft 9 to fully return to its initial state. Reusable cycle: The robotic arm places the reset fixture shaft 2 back into the empty fixture tray 1 of the production line. The fixture tray 1 then flows back to the manual loading station with the production line belt, repeating the above process to achieve continuous production.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stator assembly jig for a micro motor automatic assembly line, characterized by: It includes jig disc (1) and jig shaft (2); The jig disc (1) includes jig disc aluminum base (3), jig shaft radial positioning shaft (4) and flow guide bearing (5), the jig disc aluminum base (3) is provided with positioning hole in the middle, and the flow guide bearing (5) is provided with four pieces and is installed on the jig disc aluminum base (3); The jig shaft (2) includes transfer shaft axial positioning shaft (6), transfer radial positioning seat (7), graphite bearing sliding sleeve (8), silicon steel sheet core stator positioning shaft (9), bearing alloy seat positioning shaft (10), enameled wire tensioning shaft (11), silicon steel sheet core stator positioning shaft reset spring end cover (12), silicon steel sheet core stator upper limit buckle (13), silicon steel sheet core stator lower limit adjusting pad (14), pull rod plug (15), bearing alloy seat positioning shaft pull rod (16), silicon steel sheet core stator positioning shaft reset spring (17), silicon steel sheet core stator upper limit buckle rotating shaft (18), silicon steel sheet core stator upper limit buckle reset spring (19), enameled wire tensioning shaft reset spring (20) and enameled wire tensioning shaft upper limit shaft (21).

2. The micro motor automatic assembly line stator assembly jig according to claim 1, characterized in that: The transfer shaft axial positioning shaft (6) of the jig shaft (2) is in sliding fit with the positioning hole of the jig disc (1), the transfer radial positioning seat (7) is provided with two radial positioning holes, and the two radial positioning holes are in sliding fit with the jig shaft radial positioning shaft (4) of the jig disc (1).

3. A micro-motor automatic assembly line stator assembly jig according to claim 1, characterized in that: Mechanical arm feeding and discharging clamping jaw clamping grooves are formed in the outer side wall of the transfer radial positioning seat (7), and the groove width of the clamping groove is adapted to the thickness of the mechanical arm clamping jaw.

4. The micro electromechanical automatic assembly line stator assembly fixture of claim 1, wherein: The outer peripheral surface of the silicon steel sheet core stator positioning shaft (9) is provided with an axial positioning shaft section and an annular radial positioning boss, the silicon steel sheet core stator upper limit buckle (13) is installed on the side wall of the jig shaft (2) through a rotating shaft, and the silicon steel sheet core stator lower limit adjusting pad (14) is in the form of an annular structure and is sleeved on the bottom of the silicon steel sheet core stator positioning shaft (9).

5. A micro electromechanical automatic assembly line stator assembly jig according to claim 1, characterized in that: The outer peripheral surface of the bearing alloy seat positioning shaft (10) is provided with an axial positioning shaft section and an annular radial positioning boss, the middle part of the silicon steel sheet core stator positioning shaft (9) is provided with an annular bearing alloy seat lower positioning boss, and the upper surface of the bearing alloy seat lower positioning boss is matched with the axial positioning shaft section of the bearing alloy seat positioning shaft (10).

6. A micro electromechanical automatic assembly line stator assembly jig according to claim 1, characterized in that: The outer side wall of the pull rod plug (15) is provided with external threads, an internal thread hole matched with the external threads is formed in the bottom of the jig shaft (2), the pull rod plug (15) is installed on the bottom of the jig shaft (2) through threaded connection, and the top of the pull rod plug (15) is in contact with the bottom of the bearing alloy seat positioning shaft pull rod (16).

7. A micro electromechanical automatic assembly line stator assembly jig according to claim 1, wherein: The lower end of the enameled wire tensioning shaft (11) extends into the mounting hole at the top of the jig shaft (2), the enameled wire tensioning shaft return spring (20) is sleeved on the outer periphery of the extended section of the enameled wire tensioning shaft (11), and the two ends of the spring are respectively in contact with the stepped surface of the enameled wire tensioning shaft (11) and the bottom of the mounting hole, the limiting shaft (21) on the enameled wire tensioning shaft transversely penetrates the side wall at the top of the jig shaft (2) and extends into the limiting groove of the enameled wire tensioning shaft (11), which defines the maximum floating position of the enameled wire tensioning shaft (11), and the compression limit of the enameled wire tensioning shaft return spring (20) defines the maximum sinking position of the enameled wire tensioning shaft (11).

8. A micro electromechanical automatic assembly line stator assembly jig according to claim 1, characterized in that: The graphite bearing sliding sleeve (8) is in annular structure and is embedded in the axial positioning hole of the jig shaft (2), and the inner hole of the graphite bearing sliding sleeve (8) is in sliding fit with the outer peripheral surface of the silicon steel sheet core stator positioning shaft (9), the radial positioning boss of the silicon steel sheet core stator positioning shaft (9) is coaxially arranged with the radial positioning boss of the bearing alloy seat positioning shaft (10), and the radial dimensions of the two are adapted.

9. A micro electromechanical automatic assembly line stator assembly jig according to claim 1, wherein: The upper limiting buckle (13) of the silicon steel sheet core stator is rotatably connected with the side wall of the jig shaft (2) through the silicon steel sheet core stator upper limiting buckle rotating shaft (18), one end of the silicon steel sheet core stator upper limiting buckle return spring (19) is fixed with the side wall of the jig shaft (2), and the other end is fixed with the inner side wall of the silicon steel sheet core stator upper limiting buckle (13).

10. A micro electromechanical automatic assembly line stator assembly jig according to claim 1, wherein: The outer peripheral surface of the silicon steel sheet core stator positioning shaft (17) is sleeved with a silicon steel sheet core stator positioning shaft return spring, one end of the spring is in contact with the stepped surface at the bottom of the silicon steel sheet core stator positioning shaft (9), and the other end is in contact with the spring seat inside the jig shaft (2).

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