A claw pole of an electric machine

Abstract

The utility model relates to motor claw pole field, concretely relates to a claw part trimming device of motor claw pole, include: work bed and the telescopic positioning mechanism connected in its top one side, the top other side of work bed is connected with rotary drive mechanism, still include trimming mechanism, the top of rotary drive mechanism is connected with L shaped support, one end of L shaped support is connected with automatic blanking mechanism, and automatic blanking mechanism is located above between rotary drive mechanism and telescopic positioning mechanism, and the below of automatic blanking mechanism is equipped with the guide plate of installation in the inclined setting of work bed. Through hollow rectangular shell is used to accommodate the claw pole of trimming, and guarantee its vertical state, simultaneously through telescopic link assembly drive the up and down movement of hollow rectangular shell, realize the blanking of claw pole one by one, and in the process of blanking one by one, through the claw pole of hollow rectangular shell bottom fixed in limiting clamping device, to guarantee telescopic positioning mechanism cooperation rotary drive mechanism is used for accurate positioning and fixed to claw pole.

Description

Technical Field

[0001] This utility model relates to the field of motor claw poles, and in particular to a claw trimming device for motor claw poles. Background Technology

[0002] A motor claw pole is a special magnetic pole structure in an electric motor. It is formed by the left and right sides of the stator core with an axial segment design. The stator core of the motor claw pole adopts an axial segment structure, with the left and right parts forming the claw pole. Each claw pole usually has multiple beak-shaped or radially extending magnetic poles, such as the 6-pole design commonly found in automobile generators. An uneven air gap is formed between adjacent claw poles, and a ring-shaped concentrated winding is placed in the middle.

[0003] Claw poles are typically made of metal materials such as silicon steel sheets, low-carbon steel, or alloy steel. These materials exhibit good ductility under external forces. When the die stamps or extrudes the material, the metal undergoes plastic deformation. During this process, some material is squeezed to the cutting edge or die gap, forming burrs on the claw edge. This burr problem is particularly prominent in complex areas like the claw, which require high dimensional accuracy. If left untreated, the claw parameters will deviate from the design tolerances, leading to uneven magnetic field distribution and reduced motor efficiency and stability. Therefore, the claws must be trimmed to ensure their dimensional accuracy and surface quality meet design requirements. The following process is typically used for trimming the claws: The operator first places the claw to be trimmed on the drive plate. Then, the control system operates the cylinder to extend and precisely hold the claw, ensuring reliable fixation. Next, the drive plate rotates the claw, causing relative motion between it and the cutting tool, thus completing the trimming process.

[0004] However, the existing technology has certain drawbacks in actual operation: in the positioning and fixing of the claw pole, the operator needs to manually fix the position of the claw pole to fix it with the ejector pin. During this process, the operator's hand needs to remain in a fixed position and wait for the telescopic rod to drive the ejector pin to complete the clamping action of the claw pole. This operation method not only poses safety hazards, but also reduces work efficiency. Utility Model Content

[0005] The main technical problem solved by this utility model is to provide a claw trimming device for motor claw poles, which improves the trimming efficiency of motor claw poles and reduces occupational safety risks.

[0006] To solve the above-mentioned technical problems, the present invention provides a cutting device for the claw of a motor claw pole, comprising: a workbed and a telescopic positioning mechanism connected to one side of its top, a rotary drive mechanism connected to the other side of the top of the workbed, and a cutting mechanism, wherein an L-shaped support is connected to the top of the rotary drive mechanism, one end of the L-shaped support is connected to an automatic feeding mechanism, the automatic feeding mechanism is located above the rotary drive mechanism and the telescopic positioning mechanism, and a guide plate installed on the workbed at an incline is provided below the automatic feeding mechanism, and a material basket is placed on the lower side of the guide plate;

[0007] The automatic feeding mechanism includes a hollow rectangular shell that matches the diameter of the claw pole and a telescopic rod assembly that drives the hollow rectangular shell to move up and down. The bottom end of the hollow rectangular shell is provided with a limiting clamping device. Above the limiting clamping device is a limiting cylinder fixed on the outer surface of the hollow rectangular shell. When the limiting cylinder extends, it is used to fix the second claw pole at the bottom. The bottom end of the hollow rectangular shell near the L-shaped support has a clearance opening.

[0008] A baffle is connected to the bottom end of the L-shaped support near the hollow rectangular shell. The baffle slides in contact with the outer wall of the hollow rectangular shell and covers the surface of the clearance opening. After the automatic feeding mechanism moves upward, the bottom of the baffle is located between the bottom of the hollow rectangular shell and the bottom of the limiting clamping device.

[0009] By adopting the above technical solution, the telescopic positioning mechanism is used to accurately position and fix the claw pole, ensuring the accurate position of the claw pole during the trimming process. The rotary drive mechanism drives the claw pole to rotate, enabling the trimming mechanism to perform all-round trimming operations on the claw part of the claw pole. During use, the automatic feeding mechanism can accurately transport the claw pole to be trimmed to the working position determined by the telescopic positioning mechanism and the rotary drive mechanism, realizing automatic feeding of the claw pole. After trimming, the trimmed claw pole is guided by the guide plate to smoothly slide into the material basket, realizing automatic feeding. In addition, the hollow rectangular shell is used to contain... The housing stores the claw electrodes to be trimmed. Its design, which matches the diameter of the claw electrodes, ensures that the claw electrodes are stably placed inside the housing without shaking or tilting. The hollow rectangular housing is driven up and down by a telescopic rod assembly to allow the claw electrodes to be unloaded one by one. During the unloading process, a limiting clamping device fixes the claw electrodes at the bottom of the hollow rectangular housing to prevent them from falling off during the movement of the automatic unloading mechanism. This ensures that the telescopic positioning mechanism, in conjunction with the rotary drive mechanism, accurately positions and fixes the claw electrodes. During unloading, a limiting cylinder fixes the second claw electrode at the bottom to ensure the sequential and stable unloading process.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the limiting clamping device includes a limiting clamping plate and a bidirectional cylinder that drives it to move in opposite directions. The bidirectional cylinder is mounted on a hollow rectangular shell. Connecting plates are respectively installed at both ends of the bidirectional cylinder. The bottom ends of the connecting plates are respectively connected to the limiting clamping plate. The bottom ends of the limiting clamping plate are respectively provided with inclined portions that face each other and tilt downwards. After the bidirectional cylinder extends, the inclined portions are respectively located outside the projection of the inner cavity of the hollow rectangular shell. After the bidirectional cylinder retracts, the opposite sides of the limiting clamping plate are respectively located on the same plane as the inner wall of the hollow rectangular shell.

[0011] By adopting the above technical solution, the bidirectional cylinder drives the limiting clamps to move in opposite directions through the connecting plate, and the limiting clamps directly act on the claw pole components. Through the drive of the bidirectional cylinder, the clamping and releasing operations of the claw pole are realized, thereby fixing the position of the claw pole during the automatic feeding process and preventing it from falling or moving accidentally. Moreover, its inclined part has a guiding and positioning function. When the claw pole is put into the hollow rectangular shell, the inclined part can provide a limiting surface for the claw pole to position it, so that the telescopic positioning mechanism can fix the claw pole after it has descended. Then, after the bidirectional cylinder extends, the distance between the limiting clamps is increased, so that the claw pole can freely enter and exit the hollow rectangular shell, ensuring the continuity and smoothness of the automatic feeding process. In addition, after the bidirectional cylinder extends, the back of the claw pole fits better with the rotary drive mechanism along the clearance opening.

[0012] In a preferred embodiment, the present invention can be further configured such that: a drive plate is connected to the top of the hollow rectangular shell near the L-shaped support; the telescopic rod assembly includes an electric push rod installed on the top of the L-shaped support; guide rods are respectively provided on both sides of the electric push rod and pass through the drive plate; and the extended end of the electric push rod is connected to the drive plate.

[0013] By adopting the above technical solution, when the electric push rod extends and retracts, it drives the drive plate to move up and down, and simultaneously drives the hollow rectangular shell to move up and down synchronously. During this process, the guide rod provides precise guidance for the movement of the drive plate, restricting the drive plate to only move up and down in a straight line along the direction of the guide rod, thus ensuring the positional accuracy of the hollow rectangular shell during the movement.

[0014] In a preferred embodiment, the present invention can be further configured such that the telescopic positioning mechanism includes a fixed base and a positioning cylinder mounted thereon, wherein the extended end of the positioning cylinder is rotatably connected to a pin.

[0015] By adopting the above technical solution, when the claw reaches the designated position, the positioning cylinder quickly extends the ejector pin to fix it, so as to facilitate subsequent gripping and unloading operations.

[0016] In a preferred embodiment, the present invention can be further configured such that: the rotary drive mechanism includes a three-jaw pneumatic chuck and a drive motor for driving rotation; a positioning plate is detachably connected between the jaws of the three-jaw pneumatic chuck; and the positioning plate is positioned close to but not in contact with the side of the hollow rectangular shell facing each other.

[0017] By adopting the above technical solution, the three-jaw pneumatic chuck, with its unique three-jaw structure, can simultaneously grip the positioning plate from multiple directions, ensuring that the positioning plate will not loosen or shift during rotation. Since it can adapt to positioning plates of different sizes, when producing products of different specifications, it is not necessary to frequently replace the entire rotary drive mechanism; only the corresponding positioning plate needs to be replaced, which greatly reduces equipment replacement costs and downtime, and improves production efficiency. Furthermore, after the top pin is fixed to the claw pole, the positioning plate is rotated by the drive motor, thereby causing the claw pole to contact the trimming mechanism to achieve the trimming effect.

[0018] In a preferred embodiment, the present invention can be further configured such that the trimming mechanism includes a lead screw drive module and a tool holder slidably connected to its bottom, wherein a trimming tool is detachable within the tool holder.

[0019] By adopting the above technical solution, the lead screw drive module adjusts the position of the tool holder through linear motion to adapt to different trimming needs. In addition, the tool will gradually wear down during the trimming process. The detachable tool allows the operator to quickly remove the worn tool and install a new tool, reducing equipment downtime.

[0020] In summary, the present invention includes at least one of the following beneficial technical effects of a claw trimming device for motor claw poles:

[0021] 1. The hollow rectangular shell is used to accommodate and store the claw poles to be trimmed, ensuring that they do not shake or tilt. At the same time, the hollow rectangular shell is driven to move up and down by the telescopic rod assembly to realize the individual feeding of the claw poles. During the individual feeding process, the claw poles at the bottom of the hollow rectangular shell are fixed by the limiting clamping device to ensure that the telescopic positioning mechanism, together with the rotary drive mechanism, accurately positions and fixes the claw poles. In addition, the second claw pole at the bottom is fixed by the limiting cylinder during feeding to ensure the order and stability of feeding.

[0022] 2. The clamping and releasing operation of the claw pole is realized by the drive of the bidirectional cylinder, thereby fixing the position of the claw pole during the automatic feeding process and preventing it from falling or moving accidentally. The inclined part has a guiding and positioning function. When the claw pole is put into the hollow rectangular shell, the inclined part can provide a limiting surface for the claw pole to position it, so that the telescopic positioning mechanism can hold the lowered claw pole in place. Then, after the bidirectional cylinder extends, the distance between the limiting clamps increases, allowing the claw pole to freely enter and exit the hollow rectangular shell, ensuring the continuity and smoothness of the automatic feeding process. In addition, after the bidirectional cylinder extends, the back of the claw pole fits better with the rotary drive mechanism along the clearance opening. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the automatic feeding mechanism of this utility model;

[0026] Figure 3 This is a schematic diagram of the limiting clamping device of this utility model.

[0027] In the diagram: 1. Workbench; 20. Telescopic positioning mechanism; 30. Rotary drive mechanism; 40. Trimming mechanism; 5. L-shaped support; 60. Automatic feeding mechanism; 7. Guide plate; 8. Material basket;

[0028] 9. Baffle;

[0029] 21. Fixed base; 22. Ejector pin; 23. Positioning cylinder;

[0030] 31. Three-jaw pneumatic chuck; 32. Drive motor; 33. Positioning plate;

[0031] 41. Lead screw drive module; 42. Tool holder; 43. Trimming tool;

[0032] 61. Hollow rectangular shell; 62. Telescopic rod assembly; 63. Limiting clamping device; 64. Limiting cylinder; 65. Drive plate; 66. Clearance opening;

[0033] 621. Electric linear actuator; 622. Guide rod;

[0034] 631. Limiting clamp; 632. Two-way cylinder; 633. Connecting plate; 634. Inclined part. Detailed Implementation

[0035] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0036] It should be noted that these figures are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0037] Reference Figure 1-3 This utility model discloses a claw trimming device for a motor claw pole, comprising: a workbench 1 and a telescopic positioning mechanism 20 connected to one side of its top; a rotary drive mechanism 30 connected to the other side of the top of the workbench 1; a trimming mechanism 40; an L-shaped support 5 connected to the top of the rotary drive mechanism 30; an automatic feeding mechanism 60 connected to one end of the L-shaped support 5; the automatic feeding mechanism 60 is located above the rotary drive mechanism 30 and the telescopic positioning mechanism 20; a guide plate 7 installed on the workbench 1 and inclined below the automatic feeding mechanism 60; a material basket 8 placed on the lower side of the guide plate 7; the telescopic positioning mechanism 20 includes a fixed base 21 and a positioning cylinder 23 installed above it; a pin 22 is rotatably connected to the extended end of the positioning cylinder 23; the rotary drive mechanism 30 includes a three-jaw pneumatic chuck 31 and a drive motor 32 for driving rotation; a positioning plate 33 is detachably connected between the jaws of the three-jaw pneumatic chuck 31; the positioning plate 33 faces the hollow rectangular shell 61 on one side. The trimming mechanism 40, located close to each other but not in contact, includes a lead screw drive module 41 and a tool holder 42 slidably connected to its bottom. A detachable trimming tool 43 resides within the tool holder 42. The automatic unloading mechanism 60 includes a hollow rectangular housing 61 matching the diameter of the claw and a telescopic rod assembly 62 that drives the hollow rectangular housing 61 to move up and down. A limiting clamping device 63 is provided at the bottom of the hollow rectangular housing 61, and a device fixed to the outer surface of the hollow rectangular housing 61 is located above the limiting clamping device 63. The limiting cylinder 64 is used to fix the second claw pole at the bottom when it extends. The bottom end of the hollow rectangular shell 61 near the L-shaped support 5 is provided with a clearance opening 66. The bottom end of the L-shaped support 5 near the hollow rectangular shell 61 is connected to a baffle 9. The baffle 9 slides in contact with the outer wall of the hollow rectangular shell 61 and covers the surface of the clearance opening 66. After the automatic feeding mechanism 60 moves upward, the bottom of the baffle 9 is located between the bottom of the hollow rectangular shell 61 and the bottom of the limiting clamping device 63.

[0038] The drive motor 32 is preferably a servo motor, and the lead screw drive module 41 is manual or automatic. During the claw tip trimming process, the claw tip is pre-placed into the hollow rectangular housing 61. The bottom limiting clamping device 63 provides a limiting function, preventing the claw tip from moving during the upward or downward movement of the hollow rectangular housing 61. The inner length and width of the hollow rectangular housing 61 are adapted to the size of the claw tip, maintaining its vertical position and ensuring smooth automatic unloading. Simultaneously, after the telescopic rod assembly 62 drives the hollow rectangular housing 61 downward, the positioning cylinder 23 drives the ejector pin 22 to extend, pushing the claw tip along the clearance opening 66 and bringing its horizontal surface into contact with the positioning plate 33 to achieve claw tip trimming. For positioning and fixing, an arc-shaped opening can be opened on the side of the hollow rectangular shell 61 away from the relief opening 66 to expand the space so that the ejector pin 22 can contact the claw pole. At the same time, the limiting cylinder 64 extends to fix the second claw pole at the bottom, ensuring that the other claw poles will not fall off when the bottom claw pole is removed, thus ensuring the smooth progress of the automatic feeding operation. Under the rotation of the drive motor 32, the claw part of the claw pole is fully in contact with the trimming tool 43, thereby trimming the excess burrs. It should be noted that the trimming tool 43 is in contact with the claw part of the claw pole on the side near the positioning plate 33 to achieve the trimming effect. Even if the claw pole is not at the center of the positioning plate 33, the trimming purpose can still be achieved.

[0039] The limiting clamping device 63 includes a limiting clamping plate 631 and a bidirectional cylinder 632 that drives it to move in opposite directions. The bidirectional cylinder 632 is mounted on the hollow rectangular shell 61. Connecting plates 633 are respectively installed at both ends of the bidirectional cylinder 632. The bottom ends of the connecting plates 633 are respectively connected to the limiting clamping plate 631. The bottom ends of the limiting clamping plate 631 are respectively provided with inclined portions 634 that face each other and are inclined downward. After the bidirectional cylinder 632 extends, the inclined portions 634 are respectively located outside the projection of the inner cavity of the hollow rectangular shell 61. After the bidirectional cylinder 632 retracts, the opposite side of the limiting clamping plate 631 is respectively located on the same plane as the inner wall of the hollow rectangular shell 61.

[0040] When the bidirectional cylinder 632 retracts, it drives the connecting plate 633 connected to it to move, which in turn drives the limiting clamping plate 631 to move towards each other. During the movement of the limiting clamping plate 631 towards each other, the inclined part 634 gradually approaches the claw pole, which not only increases the contact area with the claw pole and provides greater friction and clamping force, but also plays a guiding role, enabling the claw pole to quickly and accurately enter the appropriate limiting position. This limiting method provides convenient conditions for the operator to feed materials along the top of the hollow rectangular shell 61, while ensuring that the claw pole has sufficient stability during the feeding process. During the process of the telescopic rod assembly 62 driving the hollow rectangular shell 61 to move downward, after the ejector pin 22 fixes the claw pole, the bidirectional cylinder 632 begins to extend. The extension of the bidirectional cylinder 632 drives the limiting clamps 631 to move in the opposite direction via the connecting plate 633, gradually increasing the distance between the limiting clamps 631 and causing the hollow rectangular shell 61 to return to its original position, thus freeing up the processing area of ​​the claw pole and preventing the limiting clamps 631 from interfering with the claw pole processing. During the insertion of the claw pole into the hollow rectangular shell 61, the baffle 9 blocks the clearance opening 66, ensuring that the inserted claw poles are arranged sequentially and orderly within the hollow rectangular shell 61 and always remain vertical. In the straight state, when the hollow rectangular shell 61 moves downward under the drive of the telescopic rod assembly 62, the baffle 9 gradually opens the clearance port 66. During this process, the claw pole is always clamped by the limiting clamp 631 driven by the bidirectional cylinder 632, ensuring the stability of the claw pole during the feeding process. At the same time, with the precise fixing effect of the ejector pin 22, the claw pole can move stably along the clearance port 66 and finally accurately and stably limit itself on the positioning plate 33, thereby realizing the automatic feeding of the claw pole and reducing the degree of manual intervention.

[0041] A drive plate 65 is connected to the top of the hollow rectangular shell 61 near the L-shaped support 5. The telescopic rod assembly 62 includes an electric push rod 621 installed on the top of the L-shaped support 5. Guide rods 622 are respectively provided on both sides of the electric push rod 621 and pass through the drive plate 65. The extended end of the electric push rod 621 is connected to the drive plate 65.

[0042] The implementation principle of this embodiment is as follows: During use, when the bidirectional cylinder 632 retracts, it drives the connected plate 633 to move, which in turn drives the limiting clamping plate 631 to move towards each other. The operator sequentially places the claw poles to be processed into the inner cavity of the hollow rectangular shell 61. Since the inner cavity of the hollow rectangular shell 61 matches the claw poles, and under the limiting action of the baffle 9, the claw poles are sequentially arranged in the inner cavity of the hollow rectangular shell 61. Then, the electric push rod 621 drives the drive plate 65 downward, causing the hollow rectangular shell 61 to move downward synchronously until it reaches the positioning position. After the area of ​​disk 33 is reached, the clearance port 66 opens, and then the limiting cylinder 64 extends to fix the second claw pole below. The positioning cylinder 23 drives the ejector pin 22 to extend, pushing the claw pole to move along the clearance port 66 and make its horizontal surface contact the positioning disk 33 to achieve positioning and fixing of the claw pole. Then the bidirectional cylinder 632 extends to separate the limiting clamp 631, making room for the claw pole processing area. At this time, the drive motor 32 drives the positioning disk 33 to rotate, thereby driving the claw pole to rotate synchronously, so that its claw part contacts the trimming tool 43 to achieve the trimming effect.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A claw trimming device for a motor claw pole, comprising: The workbench (1) and the telescopic positioning mechanism (20) connected to one side of its top, the workbench (1) is connected to the other side of its top with a rotary drive mechanism (30), and also includes a trimming mechanism (40). The rotary drive mechanism (30) is characterized in that an L-shaped support (5) is connected to the top of the rotary drive mechanism (30), one end of the L-shaped support (5) is connected to an automatic feeding mechanism (60), the automatic feeding mechanism (60) is located above the rotary drive mechanism (30) and the telescopic positioning mechanism (20), and a guide plate (7) installed on the workbench (1) and inclined is provided below the automatic feeding mechanism (60), and a material basket (8) is placed on the lower side of the guide plate (7). The automatic feeding mechanism (60) includes a hollow rectangular shell (61) that matches the diameter of the claw pole and a telescopic rod assembly (62) that drives the hollow rectangular shell (61) to move up and down. The bottom end of the hollow rectangular shell (61) is provided with a limiting clamping device (63). Above the limiting clamping device (63) is a limiting cylinder (64) fixed on the outer surface of the hollow rectangular shell (61). When the limiting cylinder (64) extends, it is used to fix the second claw pole at the bottom. The bottom end of the hollow rectangular shell (61) near the L-shaped support (5) is provided with a clearance opening (66). The L-shaped support (5) is connected to a baffle (9) at the bottom end of the side near the hollow rectangular shell (61). The baffle (9) slides in contact with the outer wall of the hollow rectangular shell (61) and covers the surface of the relief opening (66). After the automatic feeding mechanism (60) moves upward, the bottom of the baffle (9) is located between the bottom of the hollow rectangular shell (61) and the bottom of the limiting clamping device (63).

2. The claw trimming device for a motor claw pole according to claim 1, characterized in that, The limiting clamping device (63) includes a limiting clamping plate (631) and a bidirectional cylinder (632) that drives it to move in opposite directions. The bidirectional cylinder (632) is mounted on a hollow rectangular shell (61). Connecting plates (633) are respectively installed at both ends of the bidirectional cylinder (632). The bottom ends of the connecting plates (633) are respectively connected to the limiting clamping plate (631). The bottom ends of the limiting clamping plate (631) are respectively provided with inclined portions (634) that face each other and tilt downward. After the bidirectional cylinder (632) extends, the inclined portions (634) are respectively located outside the projection of the inner cavity of the hollow rectangular shell (61). After the bidirectional cylinder (632) retracts, the opposite side of the limiting clamping plate (631) is respectively located on the same plane as the inner wall of the hollow rectangular shell (61).

3. The claw trimming device for a motor claw pole according to claim 1, characterized in that, The hollow rectangular shell (61) has a drive plate (65) connected to the top of the side near the L-shaped support (5). The telescopic rod assembly (62) includes an electric push rod (621) installed on the top of the L-shaped support (5). The electric push rod (621) has guide rods (622) on both sides that pass through the drive plate (65). The extended end of the electric push rod (621) is connected to the drive plate (65).

4. The claw trimming device for a motor claw pole according to claim 1, characterized in that, The telescopic positioning mechanism (20) includes a fixed base (21) and a positioning cylinder (23) mounted thereon, with a pin (22) rotatably connected to the extended end of the positioning cylinder (23).

5. The claw trimming device for a motor claw pole according to claim 1, characterized in that, The rotary drive mechanism (30) includes a three-jaw pneumatic chuck (31) and a drive motor (32) for driving rotation. A positioning disk (33) is detachably connected between the jaws of the three-jaw pneumatic chuck (31). The positioning disk (33) is close to but does not contact the side of the hollow rectangular shell (61) facing each other.

6. The claw trimming device for a motor claw pole according to claim 1, characterized in that, The trimming mechanism (40) includes a lead screw drive module (41) and a tool holder (42) slidably connected to its bottom, wherein a trimming tool (43) is detachable within the tool holder (42).

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