Pre-calibration clamping frame for stator core winding

Abstract

The invention discloses a pre-calibration clamping frame for stator core winding, which comprises a processing table, a positioning plate is mounted on one side of the top of the processing table, a limiting frame connected with a group of telescopic shafts is arranged on one side of the positioning plate, a positioning frame is connected to the top of the limiting frame, and a detection frame for detecting the clamping stability of a stator core is arranged on the limiting frame. A clamping ring frame is rotatably arranged on the positioning frame and used for limiting a stator core, a set of sliding grooves are formed in the positioning frame, calibration sliding blocks used for auxiliary correction of the stator core are arranged in the sliding grooves, the positions of the calibration sliding blocks can be lifted, a connecting plate is installed on the calibration sliding blocks, and a set of movable rods are rotatably arranged on the connecting plate. A rotatable pressing roller is hinged to the front end of the movable rod, and a supporting plate is connected to the rear end of the connecting plate; compared with the prior art, the equipment has the functions of real-time monitoring, automatic cleaning and dust removal, self-adaptive correction and abrasion monitoring, the clamping stability and winding precision of the stator core are improved, the machining quality is guaranteed, and the maintenance period is prolonged.

Description

Technical Field

[0001] This invention relates to the field of stator core manufacturing technology, specifically to a pre-calibration clamp for stator core winding. Background Technology

[0002] Stator core clamping is a critical process in motor manufacturing. Clamping and calibration before winding are the key bridge connecting stator core manufacturing and winding process. Any oversight in this step will directly lead to winding quality defects.

[0003] In existing technologies, the stator core is typically clamped on a rotating base before winding. During clamping, the stator core moves in a circular motion, and external winding equipment can evenly wind the enameled wire around the outside of the stator core. However, problems can easily occur during the clamping process, leading to alignment failures and the stator core being eccentric to the clamping base. Inconsistent pressing heights during the limiting process can cause the stator core to shift during its circular motion, directly resulting in uneven distribution of the wound coils. Furthermore, existing clamping processes typically involve manual cleaning of the stator core, leaving oil, dust, and other contaminants on the core surface or inside the slots. These contaminants can form a "heat insulation film" between the coil and the core, severely hindering heat transfer from the coil to the core. To address these issues, we propose a pre-calibration clamping frame for stator core winding. Summary of the Invention

[0004] The purpose of this invention is to provide a pre-calibration clamp for stator core winding to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pre-calibration clamp for stator core winding, comprising,

[0006] A processing table, with a positioning plate installed on one side of the top of the processing table, a limiting frame connected to a set of telescopic shafts on one side of the positioning plate, a positioning frame connected to the top of the limiting frame, a detection frame for detecting the stability of the stator core clamping on the limiting frame, a snap ring frame rotatably provided on the positioning frame for limiting the stator core, and a set of sliding grooves opened on the positioning frame, with calibration sliders for auxiliary correction of the stator core inside each sliding groove;

[0007] The calibration slider is adjustable and equipped with a connecting plate. A set of movable rods is rotatably mounted on the connecting plate, with a rotatable clamping roller hinged to the front end of each rod. A support plate is connected to the rear end of the connecting plate, and a transmission disc connected to a dust collection box is mounted inside the support plate. The transmission disc can be connected to an external suction pipe to reduce dust using the dust collection box. When the stator core needs winding, it can be clamped inside the limiting frame. This allows the clamping roller to shift to one side, pressing its edge against the outer wall of the stator core. With the cooperation of the clamping roller, the circumference of the stator core moves on the clamping ring frame. The fixed brush plate on the connecting frame also cleans and assists in correction, reducing offset during clamping. After cleaning, the edge of the clamping roller is pressed against the top of the stator core. As the clamping ring frame rotates, it levels and corrects the core, reducing offset during clamping that could affect subsequent winding processes.

[0008] Preferably, a transmission rod is inserted inside the support plate, and a plurality of pushing end blocks are provided at the rear end of the pressing roller. One end of the transmission rod abuts against the inside of the pushing end block, and a hinge frame is connected to the surface of the transmission rod. One end of the hinge frame passes through the transmission disk, and a pneumatic pipe is provided at the end of the transmission rod near the transmission disk for pushing the transmission rod to reset.

[0009] A connecting frame is snapped onto the transmission rod. The connecting frame is used to connect and fix the brush plate. The fixed brush plate can press against the outside of the stator core to assist in cleaning. It can clean the outside of the stator core, reduce the residue of debris, and reduce the defect rate caused by internal short circuits.

[0010] Preferably, the transmission disk is provided with a plurality of positioning slide rails, and a transmission plate is movably provided inside each positioning slide rail. The bottom of the transmission plate passes through the positioning slide rail and is connected to the hinge frame. A docking ring is clamped on the inner side of the transmission plate. An air supply ring is provided on one side of the transmission disk, which can be connected to an external suction pipe to form a negative pressure inside the transmission disk.

[0011] The dust collection box is equipped with several docking rods inside. One end of each docking rod is connected to a reset slide plate, which is movably disposed inside the dust collection box. The other end of each docking rod is locked inside the docking ring. The negative pressure dust collection system, consisting of the dust collection box, the transmission plate, and the elastic screen plate, can effectively adsorb dust and debris generated during the cleaning process.

[0012] Preferably, the dust collection box has an annular groove on its outside and a metal mesh plate inside the annular groove. The dust collection box has several elastic screen plates inside. The elastic screen plates are engaged between the reset slide plates to adsorb dust. The transmission rod and the docking ring are linked to drive the elastic screen plates to reciprocate, avoiding blockage, extending the maintenance cycle, and keeping the processing environment clean.

[0013] Preferably, the top of the testing frame is equipped with several positioning rings, and several welding plates arranged in a circular array are fixedly connected to the positioning rings. Slider blocks are movably installed inside the welding plates, and hinge plates are provided between the sliders. A reset shaft is provided inside the welding plates and is locked inside the positioning rings. The reset shaft abuts against the bottom of the hinge plates, and a docking ball is movably installed inside the hinge plates. A pressure-sensitive sensor is provided outside the docking ball, and several feedback shafts are provided at the bottom of the pressure-sensitive sensor. A locking ring is provided at the top of the welding plates, and the locking ring is parallel to the pressure-sensitive sensor. The pressure-sensitive sensor and docking ball structure at the bottom of the testing frame monitor the stator core clamping status in real time. Combined with the feedback shaft data, the wear condition of the components can be determined, ensuring stability during clamping, reducing offset, and thus improving the accuracy and consistency of winding processing.

[0014] Preferably, the bottom of the testing frame is provided with several telescopic rods, which are used to move the testing frame to a position directly below the stator core of the lifting box, to assist in testing and to assist in feeding.

[0015] Preferably, the top of the snap ring frame is provided with an annular toothed groove, and the top fixing plate of the limiting frame is provided with several driving teeth, and the driving gear meshes with the annular toothed groove to drive the snap ring frame to move in a circular motion. The snap ring frame is provided with several circular grooves, and a limiting block can be inserted into the circular groove to clamp and limit the stator core against the outer wall, so as to limit and clamp the stator core and facilitate subsequent winding processing.

[0016] Preferably, a lifting frame is installed on the top of the processing table, and a positioning plate is installed on the lifting frame. One end of the positioning plate is connected to a conveying pipe, which is located outside the snap ring frame. An air injection hole is opened at the rear end of the positioning plate for blowing air to clean the outside of the snap ring frame and the transmission structure, reducing jamming and ensuring long-term stable operation of the equipment.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention uses a pressure-sensitive sensor and a ball-connecting structure at the bottom of the detection frame to monitor the stator core clamping status in real time. Combined with feedback shaft data, the wear condition of the components can be determined. This allows for adjustment of the offset angle of the clamping roller and the feed amount of the calibration slider, thereby controlling the calibration position of the stator core, ensuring stability during clamping, reducing offset, and improving the accuracy and consistency of winding processing.

[0019] 2. This invention utilizes a negative pressure dust collection system consisting of a dust collection box, a transmission disc, and an elastic screen plate to effectively adsorb dust and debris generated during the cleaning process; the linkage design between the transmission rod and the docking ring drives the elastic screen plate to reciprocate, avoiding clogging, extending the maintenance cycle, and keeping the processing environment clean.

[0020] 3. The present invention can dynamically adjust the angle and pressure of the clamping roller on the calibration slider with the outer wall of the stator core, so as to achieve automatic leveling and correction during the rotation of the clamping ring frame, reduce the winding error caused by uneven clamping, and improve the product yield.

[0021] 4. This invention achieves synchronous movement of the pressing roller and the cleaning brush through the mechanical linkage of the transmission rod, the hinge frame and the pushing end block. The cleaning brush shakes off debris in the reciprocating motion and can penetrate deep into the corners of the stator core slots for cleaning, improving cleaning coverage and efficiency.

[0022] 5. The present invention, through the structural design of the detection frame, pressure-sensitive sensor and reset shaft, can provide real-time feedback on clamping status and component wear data, which facilitates advance planning of maintenance and replacement; in conjunction with the air supply ring and air injection hole, the transmission structure is cleaned by blowing air, reducing jamming and ensuring long-term stable operation of the equipment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the limiting frame structure of the present invention;

[0025] Figure 3 This is a partial structural diagram of the detection frame of the present invention;

[0026] Figure 4 This is a schematic diagram of the calibration slider structure of the present invention;

[0027] Figure 5 For the present invention Figure 4 Enlarged view of a portion of point A in the middle;

[0028] Figure 6 This is a schematic diagram of the exploded disassembly structure of the calibration slider of the present invention;

[0029] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0030] Figure 8 For the present invention Figure 6 Enlarged view of a portion of point C in the middle;

[0031] In the diagram: 1. Processing table; 2. Lifting frame; 3. Limiting frame; 4. Detection frame; 5. Calibration slider; 11. Positioning plate; 21. Positioning insert plate; 22. Conveying pipe; 31. Positioning frame; 32. Snap ring frame; 41. Welding plate; 42. Reset shaft; 43. Docking ball; 431. Pressure sensor; 51. Connecting plate; 52. Pressing roller; 521. Pushing end block; 53. Support plate; 54. Connecting frame; 55. Dust collection box; 56. Transfer tray; 561. Air supply ring; 57. Transmission rod; 571. Hinge frame; 58. Docking insert rod; 581. Elastic screen plate; 59. Positioning slide rail; 591. Transmission plate; 592. Docking ring. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-8 This invention provides a technical solution: a pre-calibration clamp for stator core winding, comprising,

[0034] A processing table 1 is provided with a positioning plate 11 installed on one side of the top of the processing table 1. A limiting frame 3 connected to a set of telescopic shafts is provided on one side of the positioning plate 11. A positioning frame 31 is connected to the top of the limiting frame 3. A detection frame 4 for detecting the stability of the stator core clamping is provided on the limiting frame 3. A snap ring frame 32 is rotatably provided on the positioning frame 31 for limiting the stator core. A set of sliding grooves is provided on the positioning frame 31, and a calibration slider 5 for auxiliary correction of the stator core is provided inside each of the sliding grooves.

[0035] The calibration slider 5 can be raised, and a connecting plate 51 is installed on the calibration slider 5. A set of movable rods is rotatably mounted on the connecting plate 51, and a rotatable pressing roller 52 is hinged to the front end of the movable rods. A support plate 53 is connected to the rear end of the connecting plate 51. A transmission plate 56 connected to a dust collection box 55 is provided inside the support plate 53. The transmission plate 56 can be connected to an external air extraction pipe to reduce dust with the help of the dust collection box 55. When the stator core needs to be wound, it can be locked inside the limiting frame 3, at which time the pressing roller 52 can be... The movement to one side allows the edge to be pressed against the outer wall of the stator core. With the cooperation of the clamping roller 52, the circumference of the stator core moves on the clamping ring frame 32. The fixed brush plate on the connecting frame 54 can clean and assist in correction, reducing the possibility of displacement during clamping. After cleaning, the edge of the clamping roller 52 can be pressed against the top of the stator core. As the clamping ring frame 32 rotates, it can level and correct the position, reducing the possibility of displacement during clamping that may affect subsequent winding processing.

[0036] like Figure 5 and Figure 6 As shown, a transmission rod 57 is inserted inside the support plate 53. Several push end blocks 521 are provided at the rear end of the pressing roller 52. One end of the transmission rod 57 abuts against the inside of the push end block 521. A hinge frame 571 is connected to the surface of the transmission rod 57. One end of the hinge frame 571 passes through the transmission disk 56. A pneumatic pipe is provided at the end of the transmission rod 57 near the transmission disk 56 for pushing the transmission rod 57 to reset. When the pressing roller 52 is inclined against the outer wall of the stator core, the transmission rod 57 can be pushed to move by the push end block 521 at the rear end as the pressing roller 52 moves in a circular motion. With the help of the pneumatic pipe, the transmission rod 57 can reciprocate inside the support plate 53.

[0037] A connecting frame 54 is snapped onto the transmission rod 57. The connecting frame 54 is used to connect a fixed brush plate, and the fixed brush plate can abut against the outside of the stator core for auxiliary cleaning. When the fixed brush plate at the top of the connecting frame 54 cleans the outside of the stator core, the fixed brush plate can generate a gap during the reciprocating motion, which makes it easy to shake off the dust and debris generated during cleaning. The fixed brush plate can also clean the corners of the inner groove, reducing the residue of debris and oil.

[0038] like Figure 6 and Figure 7As shown, the transmission disk 56 is provided with several positioning slide rails 59, and each positioning slide rail 59 is movably provided with a transmission plate 591. The bottom of the transmission plate 591 passes through the positioning slide rail 59 and is connected to the hinge frame 571. A docking ring 592 is clamped on the inner side of the transmission plate 591. An air supply ring 561 is provided on one side of the transmission disk 56, which can be connected to an external suction pipe to form a negative pressure inside the transmission disk 56. With the help of negative pressure, dust and debris generated during the previous cleaning process can be adsorbed and collected into the dust collection box 55 to ensure the cleanliness of the processing environment.

[0039] The dust collection box 55 is equipped with several docking rods 58 inside. One end of the docking rod 58 is connected to a reset slide plate, and the reset slide plate is movably set inside the dust collection box 55. One end of the docking rod 58 is locked inside the docking ring 592. During the reciprocating motion of the transmission rod 57, it can push the transmission plate 591 to reciprocate inside the positioning slide rail 59 with the cooperation of the hinge frame 571. With the cooperation of the docking ring 592, the docking rod 58 and the reset slide plate can be continuously pulled to move.

[0040] like Figure 6 As shown, the dust collection box 55 has an annular groove on the outside and a metal mesh plate inside the annular groove. The dust collection box 55 has several elastic screen plates 581 inside. The elastic screen plates 581 are engaged between the reset slide plates and are used to absorb dust. As the docking rod 58 and the reset slide plate move, the outer elastic screen plates 581 can be stretched, which can reduce the clogging during subsequent dust collection, effectively extend the maintenance cycle of the equipment, and facilitate subsequent cleaning and maintenance.

[0041] like Figure 3 As shown, the top of the testing frame 4 is equipped with several positioning rings, and several welding plates 41 arranged in a circular array are fixedly connected to the positioning rings. Sliding blocks are movably mounted inside the welding plates 41, and hinge plates are provided between the sliding blocks. A reset shaft 42 is located inside the welding plates 41, and the reset shaft 42 is engaged inside the positioning rings. The reset shaft 42 abuts against the bottom of the hinge plates, and a docking ball 43 is movably mounted inside the hinge plates. A pressure sensor 431 is located outside the docking ball 43. Several feedback shafts are located at the bottom of the pressure sensor 431. A retaining ring is located at the top of the welding plates 41, and the retaining ring is parallel to the pressure sensor 431. As the stator... As the stator core moves in a circular motion following the snap ring 32, the bottom of the stator core can press against the mating ball 43. The mating ball 43 flips inside the hinge plate, and the data on the deformation of the bottom reset shaft 42 can be fed back by the pressure sensor 431. This allows for adjustment of the offset angle of the pressing roller 52 and the feed amount of the calibration slider 5, controlling the calibration position of the stator core. Furthermore, different pressure differences can be generated on different feedback shafts based on the flip angle of the mating ball 43. Real-time data feedback can also be obtained during production, allowing for confirmation of the wear of components inside the limit frame 3, thus enabling periodic replacement and maintenance.

[0042] like Figure 2 and Figure 3 As shown, the bottom of the testing frame 4 is provided with several telescopic rods, which are used to move the testing frame 4 to a position directly below the stator core of the lifting box for auxiliary testing. When the testing frame 4 is raised, the mating ball 43 can be pressed against the bottom of the stator core.

[0043] like Figure 2 As shown, the top of the snap ring frame 32 is provided with an annular toothed groove, and the top fixing plate of the limiting frame 3 is provided with several driving teeth, and the driving gear meshes with the annular toothed groove to drive the snap ring frame 32 to rotate. The snap ring frame 32 is provided with several circular grooves, and a limiting block can be inserted into the circular groove to clamp and limit against the outer wall of the stator core. After cleaning the outside of the stator core, the clamping roller 52 can be reset and pressed against the top of the stator core. With the rotation of the snap ring frame 32, it can play a role in leveling and straightening.

[0044] like Figure 1 As shown, a lifting frame 2 is installed on the top of the processing table 1, and a positioning plate 21 is installed on the lifting frame 2. One end of the positioning plate 21 is connected to a conveying pipe 22, which is located outside the snap ring frame 32. An air injection hole is opened at the rear end of the positioning plate 21 for blowing air to clean the outside of the snap ring frame 32. This can reduce the situation where the feed speed is stuck due to the connection of debris inside the annular tooth groove, and can ensure that the feed is at a constant speed during the winding process, reducing the impact of sudden deceleration on the processing quality.

[0045] Working principle: First, when the stator core needs to be wound, it can be clamped inside the limiting frame 3. At this time, the clamping roller 52 can be offset to one side, and its edge can be pressed against the outer wall of the stator core. With the cooperation of the clamping roller 52, the circumference of the stator core can be driven to move on the clamping ring frame 32. The fixed brush plate on the connecting frame 54 can play a cleaning role and also play an auxiliary correction role, reducing the displacement during clamping. After cleaning, the edge of the clamping roller 52 can be pressed against the top of the stator core, and the clamping ring frame can be moved along with it. The 32 rotation can play a role in leveling and straightening, reducing the possibility of deviation during clamping that may affect subsequent winding processing. As the clamping roller 52 is tilted against the outer wall of the stator core, the circular motion of the clamping roller 52 can push the transmission rod 57 to move continuously at the rear push end block 521. When the fixed brush plate set on the top of the connecting frame 54 cleans the outside of the stator core, the fixed brush plate can shake off the dust and debris generated during the reciprocating motion. The fixed brush plate can also clean the corners of the inner groove, reducing the residue of debris and oil.

[0046] Then, during the reciprocating motion of the transmission rod 57, with the cooperation of the hinge frame 571, the transmission plate 591 is pushed to reciprocate inside the positioning slide rail 59. With the cooperation of the docking ring 592, the docking rod 58 and the reset slide can be continuously pulled. During the dust collection process, the outer elastic screen plate 581 can be stretched, which can reduce the blockage during the subsequent dust collection process, effectively extend the maintenance cycle of the equipment, and facilitate subsequent cleaning and maintenance.

[0047] Finally, after cleaning the outside of the stator core, the clamping roller 52 can be reset and placed against the top of the stator core. As the snap ring frame 32 rotates, it can play a leveling and correcting role. At the same time, the bottom detection frame 4 is raised, which can place the mating ball 43 against the bottom of the stator core. As the stator core follows the snap ring frame 32 in a circular motion, the bottom of the stator core can squeeze the mating ball 43. The mating ball 43 flips inside the hinge plate, and the data of the deformation of the bottom reset shaft 42 can be fed back by the pressure sensor 431. This allows adjustment of the offset angle of the clamping roller 52 and the feed amount of the calibration slider 5, controlling the calibration position of the stator core. According to the flip angle of the mating ball 43, different pressure differences can be generated for different feedback shafts. Real-time data feedback can also be obtained during the production process, which can confirm the wear of the components inside the limit frame 3, so as to perform periodic replacement and maintenance.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-calibration clamp for stator core winding, characterized in that: include, A processing table (1) is provided with a positioning plate (11) on one side of the top of the processing table (1). A limiting frame (3) connected to a set of telescopic shafts is provided on one side of the positioning plate (11). A positioning frame (31) is connected to the top of the limiting frame (3). A detection frame (4) for detecting the stability of the stator core clamping is provided on the limiting frame (3). A snap ring frame (32) is rotatably provided on the positioning frame (31) for limiting the stator core. A set of sliding grooves is provided on the positioning frame (31), and a calibration slider (5) for auxiliary correction of the stator core is provided inside each of the sliding grooves. The calibration slider (5) can be raised, and a connecting plate (51) is installed on the calibration slider (5). A set of movable rods is rotatably provided on the connecting plate (51), and a rotatable pressing roller (52) is hinged to the front end of the movable rods. A support plate (53) is connected to the rear end of the connecting plate (51). A transmission disk (56) for connecting the dust collection box (55) is provided inside the support plate (53). The transmission disk (56) can be connected to an external air extraction pipe to play a dust reduction role with the help of the dust collection box (55).

2. The pre-calibration clamp for stator core winding according to claim 1, characterized in that: A transmission rod (57) is inserted inside the support plate (53). Several push end blocks (521) are provided at the rear end of the pressing roller (52). One end of the transmission rod (57) abuts against the inside of the push end block (521). A hinge frame (571) is connected to the surface of the transmission rod (57). One end of the hinge frame (571) passes through the transmission disk (56). A pneumatic pipe is provided at the end of the transmission rod (57) near the transmission disk (56) for pushing the transmission rod (57) to reset. A connecting frame (54) is snapped onto the transmission rod (57). The connecting frame (54) is used to connect and fix the brush plate, and the fixed brush plate can abut against the outside of the stator core for auxiliary cleaning.

3. The pre-calibration clamp for stator core winding according to claim 1, characterized in that: The transmission disk (56) is provided with several positioning slide rails (59), and each positioning slide rail (59) is provided with a transmission plate (591). The bottom of the transmission plate (591) passes through the positioning slide rail (59) and is connected to the hinge frame (571). A docking ring (592) is provided on the inner side of the transmission plate (591). An air supply ring (561) is provided on one side of the transmission disk (56), which can be connected to an external suction pipe to form a negative pressure inside the transmission disk (56). The dust collection box (55) is provided with several docking rods (58) inside. One end of the docking rod (58) is connected to a reset slide plate, and the reset slide plate is movably disposed inside the dust collection box (55). One end of the docking rod (58) is locked inside the docking ring (592).

4. A pre-calibration clamp for stator core winding according to claim 3, characterized in that: The dust collection box (55) has an annular groove on the outside and a metal mesh plate inside the annular groove. The dust collection box (55) has several elastic screen plates (581) inside. The elastic screen plates (581) are engaged between the reset slide plates and are used to adsorb dust.

5. A pre-calibration clamp for stator core winding according to claim 1, characterized in that: The top of the detection frame (4) is equipped with several positioning rings, and several welding plates (41) arranged in a ring array are fixedly connected to the positioning rings. The welding plates (41) are equipped with sliding blocks inside, and there are hinge plates between the sliding blocks. The welding plates (41) are equipped with reset shafts (42) inside, and the reset shafts (42) are locked inside the positioning rings. The reset shafts (42) abut against the bottom of the hinge plates, and there are docking balls (43) inside the hinge plates. There are pressure sensors (431) outside the docking balls (43). There are several feedback shafts at the bottom of the pressure sensors (431). The top of the welding plates (41) is equipped with a locking ring, and the locking ring is arranged parallel to the pressure sensors (431).

6. A pre-calibration clamp for stator core winding according to claim 1, characterized in that: The bottom of the testing frame (4) is provided with several telescopic rods, which are used to move the testing frame (4) to a position directly below the stator core of the lifting box for auxiliary testing.

7. A pre-calibration clamp for stator core winding according to claim 1, characterized in that: The top of the snap ring frame (32) is provided with an annular toothed groove. The top fixing plate of the limiting frame (3) is provided with several driving teeth, and the driving gear meshes with the annular toothed groove to drive the snap ring frame (32) to move in a circular motion. The snap ring frame (32) is provided with several circular grooves, and a limiting block can be inserted into the circular groove to clamp and limit against the outer wall of the stator core.

8. A pre-calibration clamp for stator core winding according to claim 1, characterized in that: The processing table (1) is equipped with a lifting frame (2) on top. A positioning plate (21) is installed on the lifting frame (2). One end of the positioning plate (21) is connected to a conveying pipe (22). The conveying pipe (22) is located outside the snap ring frame (32). An air injection hole is opened at the rear end of the positioning plate (21) for blowing air to clean the outside of the snap ring frame (32).

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