Commutator notch carving device for motor production

Abstract

The invention belongs to the technical field of commutator processing, and discloses a commutator notch carving device for motor production, which comprises a processing table, a carving mechanism fixed at the top end of the processing table, a positioning mechanism fixed at the top end of the processing table, a commutator main body arranged at the top end of the positioning mechanism, and a dust removal mechanism fixed at the top end of the processing table. Through cooperation of the first air cylinder, the abutting rod, the first motor and other structures, the device can achieve high-precision and automatic downward carving machining of a commutator main body notch, the first air cylinder drives the abutting rod to be matched with the driving rod, the commutator main body is stably clamped, displacement generated in the machining process is avoided, the machining precision is improved, and the machining efficiency is improved. The first motor drives the driving rod and the commutator main body to accurately rotate, different processing areas are switched, the second air cylinder is matched to adjust the position of the lower carving disc, the second motor drives the lower carving disc to rotate at a high speed, notch downward carving can be efficiently completed, the processing precision is high, the consistency is good, and the large-batch production requirement is met.

Description

Technical Field

[0001] This invention belongs to the field of commutator processing technology, specifically a commutator slot engraving device for motor production. Background Technology

[0002] As a core component of DC motors, the commutator's slot machining accuracy directly affects the motor's performance and service life. Currently, the motor industry requires commutator slot dimensional tolerances of ±0.02mm, which traditional manual engraving methods can no longer meet. Currently, commutator slot engraving mainly adopts the following two methods: one is manual hand-held engraving, which relies on the operator's experience, resulting in low efficiency and poor consistency; the other is using general-purpose engraving machine tools, which improves accuracy but involves complex equipment adjustments and long changeover times. Manual methods suffer from unstable machining accuracy and low production efficiency. While general-purpose engraving machine tools improve accuracy, their low utilization rate makes them unsuitable for mass production. Existing specialized equipment generally suffers from complex structures, difficult adjustments, and narrow applicability, failing to meet the requirements of modern motor production for high efficiency, high precision, and high flexibility.

[0003] CN223056785U discloses a commutator grooving machine, including a clamping and indexing assembly mounted on a frame for clamping the commutator and driving it to rotate; and a power head assembly mounted on the frame, which has a milling power head for mounting a lower grooving cutter. A laser sensor identifies the reflective area of ​​the lower grooving on the commutator and transmits the identification data to a control system. The control system controls the milling power head and the clamping and indexing assembly to perform grooving on the commutator. The clamping and indexing assembly, combined with the laser sensor, automatically locates the grooving position, enabling rapid, efficient, and uniform lower grooving between the armature commutator segments of a DC torque motor, suitable for automated and mass production.

[0004] However, when this device is used, it cuts the commutator with a cutter head. During the cutting process, metal debris will accumulate around the cutting area. If the device is used for too long, the accumulation of metal debris will cause blockage in the subsequent cutting process. Therefore, a commutator slot cutting device for motor production is proposed, which can remove and collect the metal impurities generated during processing. Summary of the Invention

[0005] To address the problems mentioned in the background art, the present invention provides a commutator slot undercutting device for motor manufacturing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a commutator slot undercutting device for motor production, comprising a processing table, an undercutting mechanism fixed at the top of the processing table, a support leg fixed at the bottom of the processing table, a positioning mechanism fixed at the top of the processing table, a commutator body disposed at the top of the positioning mechanism, a dust removal mechanism fixed at the top of the processing table, and a baffle plate fixed at the top of the processing table. The engraving mechanism includes a first cylinder, a clamping rod, and a first motor. The first cylinder is fixed to the top of the processing table, and the clamping rod is fixed to the extended end of the first cylinder. The first motor is fixed to the top of the processing table, and a drive rod is fixed to the rotating end of the first motor. The second cylinder is fixed to the top of the processing table, and a support base is fixed to the extended end of the second cylinder. The second motor is fixed to the top of the support base, and a lower engraving disc is fixed to the rotating end of the second motor.

[0007] Preferably, one end of the clamping rod has a slot, one end of the drive rod has a slot, the outer wall of the commutator body is in contact with the inner wall of the clamping rod, the commutator body and the clamping rod are slidably connected, the outer wall of the commutator body is in contact with the inner wall of the drive rod, and the commutator body and the drive rod are slidably connected.

[0008] Preferably, the positioning mechanism includes a support frame, support wheels, and an extension frame. The support frame is fixed to the top of the processing table, and support wheels are rotatably connected to the top of the support frame. An extension frame is fixed to the outside of the support frame, and a first electric motor is fixed to the outside of the support frame. A connecting rod is fixed to the rotating end of the first electric motor, and a first gear is fixed to the outside of the connecting rod. A cleaning rod is rotatably connected to the inner wall of the extension frame, and a second gear is fixed to the outside of the cleaning rod. The support frame, fixed to the top of the processing table, serves as the core support structure for positioning. To ensure the relative position of the overall positioning assembly and the lower engraving mechanism is fixed and to avoid processing deviations due to support offset, two sets of symmetrically distributed support wheels are rotatably connected to the top of the support frame. Their outer walls are in close contact with the outer wall of the commutator body, providing bottom support for the commutator body, dispersing the clamping pressure of the clamping rod and the drive rod, and rotating synchronously when the first motor drives the commutator body to rotate, reducing frictional losses between the commutator body and the support structure. At the same time, the rolling support ensures the coaxiality of the commutator body during rotation, avoiding uneven engraving depth of the slot due to radial runout.

[0009] Preferably, the support rollers are provided in two sets, and the support rollers are symmetrically distributed about the central axis of the support frame. The outer wall of the support rollers is connected to the commutator body.

[0010] Preferably, the diameter of the first gear is larger than the diameter of the second gear, the first gear has several sets of teeth fixed on its outer side, the outer wall of the second gear has several sets of teeth, the first gear and the second gear are meshed together, and the cleaning rod has several sets of cleaning bristles on its outer side, the cleaning bristles being arranged at equal intervals.

[0011] Preferably, the dust removal mechanism includes a filter plate, an extension plate, and a return spring. The filter plate is disposed inside the processing table, and the extension plate is fixed to the outside of the filter plate. The return spring is fixed inside the processing table, and a baffle is fixed to the outside of the return spring. A lever is fixed to the top of the baffle. A storage box is movably connected inside the processing table, and a pull rod is fixed to the outside of the storage box. A support frame is fixed inside the processing table, and a second electric motor is fixed to the top of the support frame. A fan is fixed to the rotating end of the second electric motor. The second electric motor drives the fan to rotate at high speed, generating a stable airflow from top to bottom. This airflow can force metal debris and dust splashed during the processing of the commutator body by the lower engraving plate to the filter plate, preventing debris from drifting into the slot of the commutator body and causing dimensional deviations, or adhering to the surface of the lower engraving plate and causing rough processing edges. The dust collection holes of the filter plate can accurately intercept debris and guide it downwards, preventing debris from entering the mating gap of the drive rod and the clamping rod, reducing component wear, extending the service life of the positioning mechanism and the lower engraving mechanism, and reducing the frequency of equipment failure.

[0012] Preferably, there are two sets of extension plates, which are symmetrically distributed about the central axis of the filter plate, and several sets of reset springs are arranged at equal intervals.

[0013] Preferably, the top of the filter plate has a dust collection hole, the return spring is used to squeeze the baffle and keep it moving towards the central axis of the filter plate, the outer wall of the baffle is attached to the inner wall of the processing table, and the baffle and the processing table are slidably connected.

[0014] Preferably, the top of the baffle is provided with an arc groove, the outer wall of the storage box is attached to the inner wall of the processing table, and the storage box and the processing table are slidably connected.

[0015] Preferably, the fan has several sets of fan blades fixed to its exterior, the fan blades are arranged in a ring array, and the baffle is sleeved on the exterior of the filter plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the coordinated arrangement of a first cylinder, a clamping rod, and a first motor, enables the device to achieve high-precision, automated engraving of the commutator body's groove. The first cylinder drives the clamping rod, which, in conjunction with the drive rod, securely clamps the commutator body, preventing displacement during processing. The first motor drives the drive rod and the commutator body to rotate precisely, switching between different processing areas. In conjunction with the second cylinder, the position of the engraving disc is adjusted, and the second motor drives the engraving disc to rotate at high speed, efficiently completing the groove engraving with high precision and good consistency, suitable for mass production needs.

[0017] This invention, through the coordinated arrangement of structures such as a support frame, support wheels, and an extension frame, enables the device to assist in positioning the commutator body and cleaning residual metal impurities after processing. The two sets of support wheels on the support frame can support and position the commutator body, ensuring its coaxiality during rotation. The cleaning rod on the extension frame rotates under the drive of a first electric motor, a first gear, and a second gear, and its external cleaning bristles can contact the surface of the commutator body to scrape off the metal impurities attached after processing, preventing impurities from affecting the accuracy of subsequent processing.

[0018] This invention, through the combination of a filter plate, an extension plate, and a return spring, enables the device to efficiently collect metal debris generated during processing, maintaining a clean processing environment. The filter plate can be quickly disassembled and assembled via the extension plate and the baffle driven by the return spring, facilitating cleaning or replacement. A second electric motor drives a fan to generate downward airflow, blowing the processing debris through the dust collection holes of the filter plate into a collection box for centralized collection, preventing debris accumulation and clogging of the processing area, while reducing the impact on equipment and processing accuracy, and lowering maintenance costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall rear view structure of the present invention; Figure 3 This is a schematic diagram of the unfolded state of the processing table of the present invention; Figure 4 This is a schematic diagram of the lower engraving mechanism of the present invention; Figure 5 This is a schematic diagram of the commutator main body structure removed by the lower marking mechanism of the present invention; Figure 6 This is a schematic diagram of the positioning mechanism structure of the present invention; Figure 7 This is a schematic diagram of the left-side structure of the positioning mechanism of the present invention; Figure 8 This is a schematic diagram of the dust removal mechanism of the present invention; Figure 9 This is a schematic cross-sectional view of the dust removal mechanism of the present invention; Figure 10This is a partial cross-sectional structural diagram of the dust removal mechanism of the present invention; Figure 11 For the present invention Figure 10 A magnified schematic diagram of a partial cross-section at point A in the middle.

[0020] In the diagram: 1. Processing table; 2. Support leg; 3. Lower engraving mechanism; 301. First cylinder; 302. Clamping rod; 303. First motor; 304. Drive rod; 305. Second cylinder; 306. Support base; 307. Second motor; 308. Lower engraving plate; 4. Commutator body; 5. Positioning mechanism; 501. Support frame; 502. Support wheel; 503. Extension frame; 504. First electric motor; 505. Connecting rod; 506. First gear; 507. Second gear; 508. Cleaning rod; 6. Dust removal mechanism; 601. Filter plate; 602. Extension plate; 603. Return spring; 604. Baffle; 605. Toggle lever; 606. Storage box; 607. Pull rod; 608. Support frame; 609. Second electric motor; 610. Fan; 7. Baffle plate. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 11 As shown, the present invention provides a commutator slot under-engraving device for motor production, including a processing table 1, an under-engraving mechanism 3 fixed at the top of the processing table 1, a support leg 2 fixed at the bottom of the processing table 1, a positioning mechanism 5 fixed at the top of the processing table 1, a commutator body 4 disposed at the top of the positioning mechanism 5, a dust removal mechanism 6 fixed at the top of the processing table 1, and a baffle 7 fixed at the top of the processing table 1.

[0023] like Figures 1 to 8As shown, the lower engraving mechanism 3 includes a first cylinder 301, a clamping rod 302, and a first motor 303. The first cylinder 301 is fixed to the top of the processing table 1. The clamping rod 302 is fixed to the extended end of the first cylinder 301. The first motor 303 is fixed to the top of the processing table 1. The drive rod 304 is fixed to the rotating end of the first motor 303. A slot is opened at one end of the clamping rod 302 and a slot is opened at one end of the drive rod 304. The outer wall of the commutator body 4 is attached to the inner wall of the clamping rod 302. The commutator body 4 and the clamping rod 302 are slidably connected. The outer wall of the commutator body 4 is attached to the inner wall of the drive rod 304. The commutator body 4 and the drive rod 304 are slidably connected. A second cylinder 305 is fixed to the top of the processing table 1. A support base 306 is fixed to the extended end of the second cylinder 305. A second motor 307 is fixed to the top of the support base 306. A lower engraving disk 308 is fixed to the rotating end of the second motor 307.

[0024] The above scheme is adopted as follows: After the commutator body 4 is placed on the support wheel 502, the first cylinder 301 is activated to push the clamping rod 302 towards the commutator body 4, so that one end of the commutator body 4 is inserted into the interior of the clamping rod 302 and the other end of the commutator body 4 is inserted into the interior of the drive rod 304. The commutator body 4 is pressed together by the first cylinder 301 and the clamping rod 302. The second motor 307 is activated to drive the lower engraving disk 308 to rotate. At the same time, the second cylinder 305 is activated to pull the support base 306, the second motor 307 and the lower engraving disk 308, so that the high-speed rotating lower engraving disk 308 contacts the surface of the commutator body 4, thereby engraving the groove of the commutator body 4. After one end is engraved, the lower engraving disk 308 is reset by the second cylinder 305, and the first motor 303 is activated to drive the drive rod 304 and the commutator body 4 to rotate, thereby engraving the next processing area of ​​the commutator body 4.

[0025] like Figures 1 to 8As shown, the positioning mechanism 5 includes a support frame 501, support wheels 502, and an extension frame 503. The support frame 501 is fixed to the top of the processing table 1. The top of the support frame 501 is rotatably connected to the support wheels 502. Two sets of support wheels 502 are provided, and the support wheels 502 are symmetrically distributed about the central axis of the support frame 501. The outer wall of the support wheels 502 abuts against the commutator body 4. The extension frame 503 is fixed to the outside of the support frame 501. A first electric motor 504 is fixed to the outside of the support frame 501. The rotating end of the first electric motor 504... A connecting rod 505 is fixed, and a first gear 506 is fixed to the outside of the connecting rod 505. A cleaning rod 508 is rotatably connected to the inner wall of the extension frame 503. A second gear 507 is fixed to the outside of the cleaning rod 508. The diameter of the first gear 506 is larger than the diameter of the second gear 507. Several sets of teeth are fixed to the outside of the first gear 506. Several sets of teeth are provided on the outer wall of the second gear 507. The first gear 506 and the second gear 507 are meshed together. Several sets of cleaning bristles are provided on the outside of the cleaning rod 508. The cleaning bristles are arranged at equal intervals.

[0026] The above solution is adopted as follows: after the commutator body 4 is placed on the support wheel 502, the bottom end of the commutator body 4 contacts the cleaning rod 508. The first electric motor 504 is started to drive the connecting rod 505 and the first gear 506 to rotate. Then, the first gear 506 drives the second gear 507 and the cleaning rod 508 to rotate, so that the commutator body 4 rotates and contacts the commutator body 4 through the rotation of the cleaning rod 508, thereby scraping off the metal impurities attached to the surface of the commutator body 4 after it is engraved.

[0027] like Figures 1 to 11 As shown, the dust removal mechanism 6 includes a filter plate 601, an extension plate 602, and a return spring 603. The filter plate 601 is disposed inside the processing table 1, and the extension plate 602 is fixed to the outside of the filter plate 601. The return spring 603 is fixed inside the processing table 1. There are two sets of extension plates 602, which are symmetrically distributed about the central axis of the filter plate 601. There are several sets of return springs 603, which are arranged at equal intervals.

[0028] like Figures 1 to 11As shown, a baffle 604 is fixed to the outside of the return spring 603. A dust collection hole is opened at the top of the filter plate 601. The return spring 603 is used to squeeze the baffle 604 and keep it moving towards the central axis of the filter plate 601. The outer wall of the baffle 604 is attached to the inner wall of the processing table 1. The baffle 604 and the processing table 1 are slidably connected. A lever 605 is fixed to the top of the baffle 604. A storage box 606 is movably connected inside the processing table 1. An arc is opened at the top of the baffle 604. The outer wall of the storage box 606 is attached to the inner wall of the processing table 1. The storage box 606 and the processing table 1 are slidably connected. A pull rod 607 is fixed to the outside of the storage box 606. A support frame 608 is fixed inside the processing table 1. A second electric motor 609 is fixed to the top of the support frame 608. A fan 610 is fixed to the rotating end of the second electric motor 609. Several sets of fan blades are fixed to the outside of the fan 610. The fan blades are arranged in a ring array. A baffle 7 is sleeved on the outside of the filter plate 601.

[0029] The above solution involves activating the second electric motor 609, which drives the fan 610 to rotate. The fan 610, due to its shape, blows air from top to bottom as it rotates, causing dust and impurities generated during the engraving process to fall through the filter plate 601 and be collected in the bottom collection box 606. When installing the filter plate 601, it is pressed against the baffle 604 from top to bottom, causing the extension plate 602 to press against the baffle 604. The baffle 604 retracts inward, and after the extension plate 602 passes, the return spring 603 resets the baffle 604, locking it at the top of the extension plate 602. When removal is needed, the baffle 604 is removed by pushing open the lever 605, allowing the filter plate 601 with excessive dust accumulation to be removed for replacement or cleaning.

[0030] The working principle and usage process of this invention are as follows: First, after placing the commutator body 4 on the support roller 502, the first cylinder 301 is activated to push the clamping rod 302 towards the commutator body 4, so that one end of the commutator body 4 is inserted into the interior of the clamping rod 302, and the other end of the commutator body 4 is inserted into the interior of the drive rod 304. The commutator body 4 is then clamped together by the first cylinder 301 and the clamping rod 302. Then, the second motor 307 is activated to drive the lower engraving disc 308 to advance. The commutator body 4 rotates while the second cylinder 305 pulls the support base 306, the second motor 307, and the lower engraving disk 308, causing the high-speed rotating lower engraving disk 308 to contact the surface of the commutator body 4, thereby engraving the groove of the commutator body 4. After one end is engraved, the second cylinder 305 resets the lower engraving disk 308 and starts the first motor 303 to drive the drive rod 304 and the commutator body 4 to rotate, thereby engraving the next processing area of ​​the commutator body 4.

[0031] Next, after the commutator body 4 is placed on the support wheel 502, the bottom end of the commutator body 4 contacts the cleaning rod 508. The first electric motor 504 is started to drive the connecting rod 505 and the first gear 506 to rotate. Then, the first gear 506 drives the second gear 507 and the cleaning rod 508 to rotate, so that the commutator body 4 rotates and contacts the commutator body 4 through the rotation of the cleaning rod 508, thereby scraping off the metal impurities attached to the surface of the commutator body 4 after it is engraved.

[0032] Finally, the second electric motor 609 is started, causing the fan 610 to rotate. The fan 610, due to its shape, blows air from top to bottom as it rotates, causing dust and impurities generated during the engraving process to fall through the filter plate 601 and be collected in the bottom collection box 606. When the filter plate 601 needs to be installed, it is pressed against the baffle 604 from top to bottom, causing the extension plate 602 to press against the baffle 604. The baffle 604 retracts inward, and after the extension plate 602 passes, the return spring 603 resets the baffle 604, locking it at the top of the extension plate 602. When removal is needed, the baffle 604 is removed by pushing open the lever 605, allowing the filter plate 601 with excessive dust accumulation to be removed for replacement or cleaning.

[0033] After completing the slot engraving of the commutator body 4 in a single operation, the second motor 307 and the second electric motor 609 are turned off, the rotation of the engraving plate 308 and the blowing of the fan 610 are stopped, and then the first cylinder 301 is started to drive the clamping rod 302 to move away from the commutator body 4, thereby releasing the clamping and fixing of the commutator body 4. Then, the commutator body 4 that has been processed is manually removed from the support roller 502, thus completing the processing flow of a single workpiece.

[0034] If continuous batch processing is required, repeat the above steps, place the new commutator body 4 to be processed on the support roller 502, ensure that its two ends are aligned with the slots of the clamping rod 302 and the drive rod 304 respectively, and then re-clamp and fix it by the first cylinder 301, and then start the lower engraving mechanism 3, the positioning mechanism 5 and the dust removal mechanism 6 in sequence.

[0035] When a large amount of metal debris accumulates inside the storage box 606, hold the pull rod 607 to pull the storage box 606 out of the processing table 1, empty the debris, and then push the storage box 606 back to its original position along the inner wall of the processing table 1 to ensure the normal operation of the subsequent dust collection function. At the same time, regularly check the wear of the external cleaning bristles of the cleaning rod 508. If the cleaning bristles fall off or become severely dirty, the extension frame 503 can be removed to replace or clean the cleaning rod 508 to ensure its scraping effect on the surface of the commutator body 4 and maintain the overall processing accuracy of the device.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] 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 commutator slot engraving device for motor manufacturing, comprising a processing table (1), characterized in that: The top of the processing table (1) is fixed with a lower engraving mechanism (3), the bottom of the processing table (1) is fixed with a support leg (2), the top of the processing table (1) is fixed with a positioning mechanism (5), the top of the positioning mechanism (5) is provided with a commutator body (4), the top of the processing table (1) is fixed with a dust removal mechanism (6), and the top of the processing table (1) is fixed with a baffle plate (7). The lower engraving mechanism (3) includes a first cylinder (301), a clamping rod (302), and a first motor (303). The first cylinder (301) is fixed to the top of the processing table (1). The clamping rod (302) is fixed to the extended end of the first cylinder (301). The first motor (303) is fixed to the top of the processing table (1). The drive rod (304) is fixed to the rotating end of the first motor (303). The second cylinder (305) is fixed to the top of the processing table (1). The support base (306) is fixed to the extended end of the second cylinder (305). The second motor (307) is fixed to the top of the support base (306). The lower engraving plate (308) is fixed to the rotating end of the second motor (307).

2. The commutator slot engraving device for motor production according to claim 1, characterized in that: One end of the clamping rod (302) has a slot, and one end of the drive rod (304) has a slot. The outer wall of the commutator body (4) is attached to the inner wall of the clamping rod (302). The commutator body (4) and the clamping rod (302) are slidably connected. The outer wall of the commutator body (4) is attached to the inner wall of the drive rod (304). The commutator body (4) and the drive rod (304) are slidably connected.

3. The commutator slot engraving device for motor production according to claim 1, characterized in that: The positioning mechanism (5) includes a support frame (501), a support wheel (502), and an extension frame (503). The support frame (501) is fixed to the top of the processing table (1). The support wheel (502) is rotatably connected to the top of the support frame (501). The extension frame (503) is fixed to the outside of the support frame (501). A first electric motor (504) is fixed to the outside of the support frame (501). A connecting rod (505) is fixed to the rotating end of the first electric motor (504). A first gear (506) is fixed to the outside of the connecting rod (505). A cleaning rod (508) is rotatably connected to the inner wall of the extension frame (503). A second gear (507) is fixed to the outside of the cleaning rod (508).

4. The commutator slot engraving device for motor production according to claim 3, characterized in that: The support rollers (502) are provided in two sets. The support rollers (502) are symmetrically distributed about the central axis of the support frame (501). The outer wall of the support rollers (502) is connected to the commutator body (4).

5. The commutator slot engraving device for motor production according to claim 3, characterized in that: The diameter of the first gear (506) is larger than that of the second gear (507). The first gear (506) has several sets of teeth fixed on its exterior. The second gear (507) has several sets of teeth on its outer wall. The first gear (506) and the second gear (507) are meshed together. The cleaning rod (508) has several sets of cleaning bristles on its exterior. The cleaning bristles are arranged at equal intervals.

6. The commutator slot engraving device for motor production according to claim 1, characterized in that: The dust removal mechanism (6) includes a filter plate (601), an extension plate (602), and a return spring (603). The filter plate (601) is located inside the processing table (1). The extension plate (602) is fixed to the outside of the filter plate (601). The return spring (603) is fixed inside the processing table (1). A baffle (604) is fixed to the outside of the return spring (603). A lever (605) is fixed to the top of the baffle (604). A storage box (606) is movably connected inside the processing table (1). A pull rod (607) is fixed to the outside of the storage box (606). A support frame (608) is fixed inside the processing table (1). A second electric motor (609) is fixed to the top of the support frame (608). A fan (610) is fixed to the rotating end of the second electric motor (609).

7. The commutator slot engraving device for motor production according to claim 6, characterized in that: Two sets of extension plates (602) are provided, and the extension plates (602) are symmetrically distributed about the central axis of the filter plate (601). Several sets of reset springs (603) are provided, and the reset springs (603) are arranged at equal intervals.

8. The commutator slot engraving device for motor production according to claim 6, characterized in that: The filter plate (601) has a dust collection hole at its top. The reset spring (603) is used to squeeze the baffle (604) and keep it moving towards the central axis of the filter plate (601). The outer wall of the baffle (604) is attached to the inner wall of the processing table (1). The baffle (604) and the processing table (1) are slidably connected.

9. The commutator slot engraving device for motor production according to claim 6, characterized in that: The top of the baffle (604) is provided with an arc groove, the outer wall of the storage box (606) is attached to the inner wall of the processing table (1), and the storage box (606) and the processing table (1) are slidably connected.

10. The commutator slot engraving device for motor production according to claim 6, characterized in that: The fan (610) has several sets of fan blades fixed to its exterior. The fan blades are arranged in a ring array. The baffle (7) is sleeved on the exterior of the filter plate (601).

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