Automotive seat motor commutator grinder

Abstract

The application relates to the field of motor processing equipment, and discloses an automobile seat motor commutator grinder, which comprises a processing table, a transfer mechanism and a processing mechanism, wherein the processing table is provided with a first processing jig, a second processing jig and a rotating device, the rotating device is in transmission connection with the first processing jig and the second processing jig; the transfer mechanism is provided with a transfer clamp hand capable of moving between the first processing jig and the second processing jig; the processing mechanism comprises a sliding frame, an unwinding device and a winding device, the sliding frame can move in the direction close to or away from the processing table, a plurality of guide wheels are arranged at the position of the sliding frame close to the processing table, and the grinding belt unwound by the unwinding device can be guided to the winding device after passing through the plurality of guide wheels, so that the production and processing efficiency is improved, and the grinding processing quality and consistency are better ensured.

Description

Technical Field

[0001] This invention relates to the field of motor processing equipment, and more particularly to a grinding machine for automotive seat motor commutators. Background Technology

[0002] The commutator is a key component in a DC motor, and the machining quality of its outer surface directly affects the contact stability between the brushes and the commutator, its conductivity, and the overall service life of the motor. Currently, commutators are typically manufactured using grinding tools to grind their outer surface to achieve the required dimensional accuracy and surface roughness. However, grinding tools inevitably wear down over prolonged continuous use. As wear accumulates, the geometry and grinding capacity of the tools gradually deteriorate, making it difficult to consistently meet the dimensional accuracy and surface roughness requirements. Frequent tool replacements not only significantly increase tooling costs but also require downtime for tool replacement and adjustments, extending production cycles and reducing efficiency. Therefore, there is an urgent need for equipment that can improve the grinding quality and efficiency of motor commutators. Summary of the Invention

[0003] The purpose of this invention is to provide a grinding machine for automotive seat motor commutators to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] A grinding machine for automotive seat motor commutators according to a first aspect of the present invention includes:

[0005] The processing table is equipped with a first processing fixture, a second processing fixture, and a rotating device. The rotating device is connected to the first processing fixture and the second processing fixture in a transmission manner, and the rotating device can drive the first processing fixture and the second processing fixture to rotate around an axis in the vertical direction.

[0006] The transfer mechanism has a transfer gripper that can move between the first processing fixture and the second processing fixture;

[0007] The processing mechanism includes a carriage, an unwinding device, and a winding device. The carriage can move in a direction close to or away from the processing table. Multiple guide wheels are provided on the carriage close to the processing table. The unwinding device can unwind the grinding belt, and the winding device can wind the grinding belt. The grinding belt unwound by the unwinding device can be guided to the winding device after passing around the multiple guide wheels.

[0008] This technical solution has at least the following beneficial effects: The motor commutator to be ground, along with the rotor, is placed in the first processing fixture. The rotor is partially embedded in the first processing fixture, allowing the entire unit to be relatively positioned within it. The motor commutator protrudes upwards from the first processing fixture. Similarly, the second processing fixture is used to load the rotor with the motor commutator. The transfer gripper of the transfer mechanism moves the processed motor commutator from the first processing fixture to the second processing fixture. The unwinding device contains a grinding belt spool for polishing the outer surface of the motor commutator. The grinding belt unwound from the spool passes around multiple guide wheels before being fed to the winding device. At this point, the grinding belt forms a grinding surface on the carriage. During processing, the carriage approaches the processing table, causing the grinding surface to simultaneously grind against the outer surfaces of the motor commutators placed in the first and second processing fixtures. In the grinding process, the portion of the grinding belt corresponding to the first processing fixture is the older part, and the portion corresponding to the second processing fixture is the newer part. This allows the motor commutator in the first processing fixture to undergo roughing, while the motor commutator in the second processing fixture undergoes finishing. After multiple grinding processes, the unwinding device unwinds a certain distance and then rewinds a certain distance, transferring the portion of the grinding belt originally corresponding to the second processing fixture to the first processing fixture. The first processing fixture then replenishes the newer portion of the grinding belt. This method of rewinding the grinding belt allows for continuous renewal of the grinding surface, improving production efficiency. Furthermore, the roughing in the first processing fixture makes full use of the worn portion of the grinding belt, while the finishing in the second processing fixture utilizes the less worn portion of the grinding belt to thoroughly polish the motor commutator, better ensuring the quality and consistency of the grinding process.

[0009] According to some embodiments of the present invention, a pressure regulating assembly is provided on the carriage. The pressure regulating assembly includes a transition wheel, a tensioning device, and two guide wheels. The transition wheel and the tensioning device are respectively disposed on the carriage. The transition wheel is located on the side of the two guide wheels away from the processing table. The tensioning device is located between the two guide wheels and the transition wheel. A grinding processing area is formed between the two guide wheels. Two pressure regulating assemblies are provided along the length direction of the processing table. The two grinding processing areas correspond to the first processing fixture and the second processing fixture, respectively. The grinding belt released by the unwinding device is guided to the winding device after passing through one transition wheel, one tensioning device, two grinding processing areas, another tensioning device, and another transition wheel.

[0010] According to some embodiments of the present invention, the slide is provided with a fixed clamping plate at the position of the two grinding processing areas, and a belt pressing drive is provided on the slide. The belt pressing drive is connected to a movable clamping plate, which is located on the side of the fixed clamping plate away from the processing table. The belt pressing drive can drive the movable clamping plate to move closer to or away from the fixed clamping plate, and the grinding belt located between the two grinding processing areas passes through the fixed clamping plate and the movable clamping plate.

[0011] According to some embodiments of the present invention, the belt pressing drive is provided with a transmission frame, which can drive the transmission frame to move closer to or away from the fixed clamping plate. The movable clamping plate is disposed on the side of the transmission frame closer to the fixed clamping plate. The tensioning device includes a slide, a tensioning wheel, a pressure wheel, and a first elastic element. A sliding groove is provided on the top side of the slide, and the bottom of the slide is slidably connected to the sliding groove. The first elastic element is disposed between the slide and the sliding groove and has a tendency to drive the slide towards the transmission frame. The tensioning wheel is disposed on the slide, and the grinding belt located between the grinding processing area and the transition wheel passes through the tensioning wheel on the side closer to the transmission frame. A guide slope is provided on the side of the slide near the transmission frame, and the guide slope is inclined towards the transmission frame in the direction of approaching the processing table. The pressure wheel is disposed on the transmission frame, and when the transmission frame is close to the fixed clamping plate, it can drive the outer peripheral surface of the pressure wheel to press against the guide slope.

[0012] According to some embodiments of the present invention, a spring rod is further provided between the movable clamping plate and the transmission frame. The spring rod has a tendency to push the movable clamping plate away from the transmission frame. After the transmission frame approaches the fixed clamping plate, the movable clamping plate presses against the fixed clamping plate, and then the outer peripheral surface of the pressure roller presses against the guide slope.

[0013] According to some embodiments of the present invention, the carriage is provided with a gantry frame, the gantry frame is provided with a pressing drive, the pressing drive is connected to a pressing frame, and the pressing frame is rotatably connected to pressing caps corresponding to the positions of the first processing fixture and the second processing fixture, and the two pressing caps are rotatable about an axis in the vertical direction.

[0014] According to some embodiments of the present invention, the processing table is further provided with a first buffer fixture and a second buffer fixture. The first buffer fixture, the first processing fixture, the second processing fixture, and the second buffer fixture are arranged at intervals along the length direction of the processing table. The transfer mechanism includes a transfer base, a transfer translation drive, a transfer lifting drive, and a transfer lifting plate. The transfer translation drive is disposed on the transfer base, and the transfer lifting drive is disposed on the transfer translation drive. The transfer translation drive can drive the transfer lifting drive to move along the length direction of the processing table. The transfer lifting plate is disposed on the transfer lifting drive, and the transfer lifting drive can drive the transfer lifting plate to move up and down. The transfer lifting plate is provided with transfer grippers at positions corresponding to the first buffer fixture, the first processing fixture, the second processing fixture, and the second buffer fixture.

[0015] According to some embodiments of the present invention, the present invention further includes a conveying device, a feeding mechanism, and a discharging mechanism. The conveying device is located on the side of the processing table away from the processing mechanism. The feeding mechanism is used to transfer the material of the conveying device to the first buffer fixture, and the discharging mechanism is used to transfer the material of the second buffer fixture to the conveying device.

[0016] According to some embodiments of the present invention, the feeding mechanism includes a feeding base, a feeding translation drive, a feeding lifting drive, and a feeding lifting plate. The feeding translation drive is disposed on the feeding base, and the feeding lifting drive is disposed on the feeding translation drive. The feeding translation drive can drive the feeding lifting drive to move between the conveying device and the processing table. The feeding lifting plate is disposed on the feeding lifting drive, and the feeding lifting drive can drive the feeding lifting plate to move up and down. The feeding lifting plate is provided with two feeding grippers. The processing table is provided with a feeding transfer fixture. The two feeding grippers correspond to the conveying device and the feeding transfer fixture, or correspond to the feeding transfer fixture and the first buffer fixture, respectively.

[0017] According to some embodiments of the present invention, the unloading mechanism includes an unloading transfer fixture, an unloading base, an unloading translation drive, an unloading lifting drive, and an unloading lifting plate. The unloading transfer fixture is disposed on one side of the processing table. The unloading translation drive is disposed on the unloading base. The unloading lifting drive is disposed on the unloading translation drive. The unloading translation drive can drive the unloading lifting drive to move between the conveying device and the unloading transfer fixture. The unloading lifting plate is disposed on the unloading lifting drive. The unloading lifting drive can drive the unloading lifting plate to move up and down. The unloading lifting plate is provided with an unloading gripper. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0019] Figure 1 This is an overall perspective view of the present invention.

[0020] Figure 2 This is a top view of the processing mechanism of the present invention, with the dotted line indicating the grinding belt path.

[0021] Figure 3 This is a side view of the processing mechanism of the present invention.

[0022] Figure 4 This is a perspective view of the processing table, transfer mechanism, loading mechanism and unloading mechanism of the present invention.

[0023] In the attached diagram: 100-processing table, 110-first processing fixture, 120-second processing fixture, 130-rotating device, 140-first buffer fixture, 150-second buffer fixture, 200-transfer mechanism, 210-transfer gripper, 221-transfer base, 222-transfer translation drive, 223-transfer lifting drive, 224-transfer lifting plate, 300-processing mechanism, 310-slide carriage, 320-unwinding device, 330-rewinding device, 341-transfer wheel, 342-guide wheel, 343-fixed clamping plate, 344-pressure belt drive, 345-movable clamping plate, 346-transmission frame, 34 7-Spring rod, 351-Slide seat, 352-Tensioning wheel, 353-Pressure wheel, 361-Gantry frame, 362-Pressure drive, 363-Pressure frame, 364-Pressure cap, 400-Conveying device, 500-Feeding mechanism, 510-Feeding base, 520-Feeding translation drive, 530-Feeding lifting drive, 540-Feeding lifting plate, 550-Feeding gripper, 600-Unloading mechanism, 610-Unloading transfer fixture, 620-Unloading base, 630-Unloading translation drive, 640-Unloading lifting drive, 650-Unloading gripper, 710-Tilting drive, 720-Adjusting frame, 730-Connecting shaft. Detailed Implementation

[0024] The following will clearly and completely describe the concept, specific structure, and technical effects of the present invention in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are all within the scope of protection of the present invention. Furthermore, all connection relationships mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this invention can be combined interactively without contradicting each other.

[0025] Reference Figure 1 According to a first aspect of the present invention, an automotive seat motor commutator grinding machine includes a processing table 100, a transfer mechanism 200, and a processing mechanism 300. The processing table 100 is provided with a first processing fixture 110, a second processing fixture 120, and a rotating device 130. The rotating device 130 is tractively connected to the first processing fixture 110 and the second processing fixture 120, and is capable of driving the first processing fixture 110 and the second processing fixture 120 to rotate about an axis in the vertical direction. The transfer mechanism 200 has a function to transfer the first processing fixture... A transfer gripper 210 movable between 110 and the second processing fixture 120; the processing mechanism 300 includes a slide 310, an unwinding device 320 and a winding device 330. The slide 310 can move in a direction close to or away from the processing table 100. The slide 310 is provided with a plurality of guide wheels 342 at a position close to the processing table 100. The unwinding device 320 can unwind the grinding belt, and the winding device 330 can wind the grinding belt. The grinding belt unwound by the unwinding device 320 can be guided to the winding device 330 after passing around the plurality of guide wheels 342.

[0026] As described above, the motor commutator to be ground, along with the rotor, is placed in the first processing fixture 110. The rotor is partially embedded in the first processing fixture 110, allowing the entire unit to be relatively positioned within it. The motor commutator protrudes upwards from the first processing fixture 110. Similarly, the second processing fixture 120 is used to load the rotor with the motor commutator. The transfer gripper 210 of the transfer mechanism 200 transfers the processed motor commutator from the first processing fixture 110 to the second processing fixture 120. The unwinding device 320 contains a grinding belt spool for polishing the outer surface of the motor commutator. The grinding belt unwound from the spool passes around multiple guide wheels 342 before being fed to the winding device 330. At this point, the grinding belt forms a grinding surface on the carriage 310. During processing, the carriage 310 is close to the processing table 100, causing the grinding surface to abut against the outer surfaces of the motor commutators placed in the first and second processing fixtures 110 and 120. During the grinding process, the portion of the grinding belt corresponding to the first processing fixture 110 is the older part, and the portion corresponding to the second processing fixture 120 is the newer part. This allows the motor commutator in the first processing fixture 110 to undergo roughing, while the motor commutator in the second processing fixture 120 undergoes fineing. After multiple grinding processes, the unwinding device 320 unwinds a certain distance and then rewinds a certain distance, transferring the portion of the grinding belt originally corresponding to the second processing fixture 120 to the first processing fixture 110. The first processing fixture 110 then replenishes the newer portion of the grinding belt. This method of rewinding the grinding belt allows for continuous renewal of the grinding surface, improving production efficiency. Furthermore, the roughing in the first processing fixture 110 makes full use of the worn portion of the grinding belt, while the fineing in the second processing fixture 120 utilizes the less worn portion of the grinding belt to thoroughly polish the motor commutator, better ensuring the quality and consistency of the grinding process.

[0027] It is understood that the first machining fixture 110 and the second machining fixture 120 are rotatably connected to the machining table 100, and the rotating device 130 can be set on the bottom side of the machining table 100. At this time, the top of the first machining fixture 110 and the bottom of the second machining fixture 120 protrude from the machining table 100. The rotating device 130 includes a fixture rotation motor, which is directly driven and connected to one of the first machining fixture 110 and the second machining fixture 120, and transmits power to the other through a synchronous pulley and a synchronous belt. In order to achieve back-and-forth sliding, the slide 310 is set on the main translation drive. The main translation drive provides sliding driving force to the slide 310, causing the slide 310 to move closer to or away from the machining table. The main translation drive is mainly used to provide driving force for reciprocating movement in a straight line. Its structural form is various, such as using an electric lead screw, a cylinder, or a hydraulic cylinder.

[0028] The unwinding device 320 includes an unwinding frame, an unwinding motor, and an unwinding wheel. The unwinding motor is mounted on the unwinding frame and is driven by the unwinding wheel. The unwinding wheel is used to load the grinding belt roll. The winding device 330 includes a winding frame, a winding motor, and a winding wheel. The winding frame is mounted on the processing table 100, and the winding motor is mounted on the winding frame. The winding frame is driven by the winding wheel. The winding wheel is used to wind the grinding belt after grinding.

[0029] When the grinding belt is taut on the guide wheel 342 and presses against the outer surface of the motor commutator, the contact area between the grinding surface of the grinding belt and the motor commutator is relatively small. This is especially problematic when the motor commutator is small or has low roundness; the small contact area affects the processing quality. Therefore, in this embodiment, referring to... Figure 2 and Figure 3 As shown, a pressure regulating assembly is provided on the carriage 310. The pressure regulating assembly includes a transition wheel 341, a tensioning device, and two guide wheels 342. The transition wheel 341 and the tensioning device are respectively disposed on the carriage 310. The transition wheel 341 is located on the side of the two guide wheels 342 away from the processing table 100. The tensioning device is located between the two guide wheels 342 and the transition wheel 341. A grinding processing area is formed between the two guide wheels 342. Two pressure regulating assemblies are provided along the length direction of the processing table 100. The two grinding processing areas correspond to the first processing fixture 110 and the second processing fixture 120, respectively. The grinding belt released by the unwinding device 320 is guided to the winding device 330 after passing through one transition wheel 341, one tensioning device, two grinding processing areas, another tensioning device, and another transition wheel 341. The two voltage regulating components correspond to the first processing fixture 110 and the second processing fixture 120, respectively. When the slide 310 is located away from the processing table 100, the grinding belt is not in contact with the motor commutator. The two tensioning devices tension the grinding belt located between the grinding processing area and the transition wheel 341, so that the grinding belt located in the two grinding processing areas is straightened. When the slide 310 is located close to the processing table 100, the straightened grinding belt contacts the motor commutator. At this time, the two tensioning devices relax the grinding belt located between the grinding processing area and the transition wheel 341, so that the grinding belt located in the two grinding processing areas can wrap around part of the side of the motor commutator as the slide 310 moves closer to the processing table 100. This makes the grinding belt and the motor commutator form an arc-shaped contact surface. When the motor commutator is driven to rotate, the grinding belt located on this arc-shaped contact surface polishes the surface of the motor commutator, thus greatly improving the processing efficiency and quality of the motor commutator.

[0030] To reduce instability during the grinding process of the two motor commutators and minimize belt slippage or vibration, in this embodiment, the slide 310 is equipped with a fixed clamping plate 343 at the positions of the two grinding zones. A belt pressing drive 344 is mounted on the slide 310, and the belt pressing drive 344 is connected to a movable clamping plate 345. The movable clamping plate 345 is located on the side of the fixed clamping plate 343 away from the processing table 100. The belt pressing drive 344 can move the movable clamping plate 345 closer to or further away from the fixed clamping plate 343. The grinding belt between the two grinding zones passes through the fixed clamping plate 343 and the movable clamping plate 345. It is understood that the belt pressing drive 344 is mainly used to provide the driving force for reciprocating motion in a straight direction, and its structural form can be various, such as using an electric lead screw, a pneumatic cylinder, or a hydraulic cylinder. When the grinding belt contacts the motor commutator, the belt pressing drive 344 drives the movable clamping plate 345 to approach the fixed clamping plate 343, pressing and positioning the portion of the grinding belt located in the two grinding processing areas. This ensures that the grinding belt always maintains the correct path during operation, preventing the grinding belt from shifting due to tension changes, thus improving the stability of the belt and the accuracy of the grinding position. When it is necessary to replace or adjust the grinding belt, the belt pressing drive 344 drives the movable clamping plate 345 away from the fixed clamping plate 343, thereby loosening the grinding belt.

[0031] As a specific embodiment of the tensioning device, the pressure belt drive 344 is provided with a transmission frame 346. The pressure belt drive 344 can drive the transmission frame 346 to move closer to or away from the fixed clamping plate 343. The movable clamping plate 345 is disposed on the side of the transmission frame 346 near the fixed clamping plate 343. The tensioning device includes a slide block 351, a tensioning wheel 352, a pressure wheel 353, and a first elastic element. The top side of the slide block 310 is provided with a sliding groove. The bottom of the slide block 351 is slidably connected to the sliding groove. The first elastic element is disposed between the slide block 351 and the sliding groove. The first elastic element has the function of driving the slide block 351 toward the direction closer to the transmission frame 346. The tensioning wheel 352 is disposed on the slide block 351. The grinding belt between the grinding processing area and the transition wheel 341 passes through the tensioning wheel 352 on the side near the transmission frame 346. The slide block 351 is provided with a guide slope on the side near the transmission frame 346. The guide slope is inclined towards the transmission frame 346 in the direction of approaching the processing table 100. The pressure wheel 353 is disposed on the transmission frame 346. When the transmission frame 346 is close to the fixed clamping plate 343, it can drive the outer peripheral surface of the pressure wheel 353 to press against the guide slope. It can be understood that the first elastic element can be an elastic component such as a spring, torsion spring or elastic rubber. When the grinding belt is not in contact with the outer surface of the motor commutator, the first elastic element drives the slide 351 to slide close to the transmission frame 346, pressing the grinding belt between the grinding processing area and the transition wheel 341, thereby straightening the part of the grinding belt located in the grinding processing area. When the grinding belt contacts the motor commutator, the transmission frame 346 approaches the fixed clamp 343, causing the outer circumferential surface of the pressure roller 353 to press against the guide slope. At this time, the pressure of the pressure roller 353 on the guide slope is transmitted to the slide 351, causing the slide 351 to overcome the force of the first elastic element and move away from the transmission frame 346, thereby relaxing the part of the grinding belt located between the grinding processing area and the transition wheel 341. In this way, the force of the pressure roller 353 acting on the slide 351 can be smoothly transmitted by using the guide slope structure, making the changes in the pressing or relaxing of the grinding belt by the tensioning wheel 352 more stable and ensuring the continuity of the grinding process.

[0032] To ensure that the portion of the grinding belt located in the grinding processing area can stably move towards the grinding processing area when it abuts against the motor commutator, in this embodiment, a spring rod 347 is also provided between the movable clamping plate 345 and the transmission frame 346. The spring rod 347 has a tendency to push the movable clamping plate 345 away from the transmission frame 346. The transmission frame 346 approaches the fixed clamping plate 343, causing the movable clamping plate 345 to press against the fixed clamping plate 343, and then causing the outer peripheral surface of the pressure roller 353 to press against the guide slope. As the transmission frame 346 approaches the fixed clamping plate 343, the movable clamping plate 345 first presses against the fixed clamping plate 343 under the elastic force of the spring rod 347, clamping the grinding belt. As the transmission frame 346 continues to approach, the outer circumferential surface of the pressure roller 353 presses against the guide slope, thereby pushing the slide block 351 to move away from the transmission frame 346, thus relaxing the grinding belt. This allows the portion of the grinding belt located between the grinding processing area and the transition roller 341 to move towards the grinding processing area, increasing the length of the grinding belt in the grinding processing area and achieving an arc-shaped wrapping of the motor commutator.

[0033] To prevent axial movement of the motor commutator during grinding and polishing, which could lead to a shift in the grinding position, in this embodiment, reference is made to... Figure 3 As shown, the slide 310 is provided with a gantry frame 361, and a pressing drive 362 is provided on the gantry frame 361. The pressing drive 362 is connected to a pressing frame 363. The pressing frame 363 is rotatably connected to pressing caps 364 at positions corresponding to the first processing fixture 110 and the second processing fixture 120. The two pressing caps 364 can rotate around the axis in the vertical direction. It can be understood that the pressing drive 362 is mainly used to provide the driving force for reciprocating movement in a straight line. Its structural form is various, such as using an electric lead screw, a cylinder or a hydraulic cylinder. After the motor commutator is placed on the first processing fixture 110 and the second processing fixture 120, the pressing drive 362 drives the pressing frame 363 to press down, so that the two pressing caps 364 press against the rotor ends where the two motor commutators are located. When the first processing fixture 110 and the second processing fixture 120 rotate, the two pressing caps 364 rotate together with the motor commutator, which not only restricts the axial movement of the commutator, but also does not hinder its rotation. This effectively prevents the motor commutator from loosening or shifting under high-speed rotation and grinding force, and better ensures the stability and dimensional accuracy of the grinding process.

[0034] Some motor commutator ends far from the rotor require polishing. This polishing can be achieved by tilting the grinding belt in the grinding area. Specifically, the voltage regulating assembly also includes a tilt drive 710 located on the bottom side of the slide 310. The tilt drive 710 is connected to an adjustment frame 720, which can move the adjustment frame 720 closer to or further away from the processing table 100. The two guide wheels 342 have rotatably connected connecting shafts 730 at their midpoints. These two connecting shafts 730 are rotatably connected to the slide around the axis of the processing table 100 along its length. 310, the bottom ends of the two connecting shafts 730 are respectively hinged to the processing table 100. When the tilt drive 710 drives the adjustment frame 720 to approach the processing table 100, it can drive the two guide wheels 342 to rotate until the axes of the two guide wheels 342 are vertical. When the tilt drive 710 drives the adjustment frame 720 away from the processing table 100, it can drive the two guide wheels 342 to rotate until the axes of the two guide wheels 342 are tilted towards the processing table 100. It can be understood that the tilt drive 710 has various structural forms, such as using an electric lead screw, a pneumatic cylinder or a hydraulic cylinder. After the outer surface of the motor commutator is machined, the carriage 310 moves away from the machining table 100. At this time, the tilt drive 710 drives the adjustment frame 720 away from the machining table 100, causing the two guide wheels 342 to tilt towards the machining table 100. The tilting and stretching of the grinding belt in the grinding area can compensate for the slack that occurs when the grinding belt no longer presses against the surface of the motor commutator. With the tensioning device, the grinding belt is tensioned, causing it to tilt in the grinding area. When the carriage 310 slides closer to the machining table 100... At 0, the inclined grinding belt can abut against the top corner of the motor commutator, exerting downward pressure on the motor commutator into the first processing fixture 110 and the second processing fixture 120. When the motor commutator is driven to rotate, there will be no axial movement. The inclined grinding belt will polish the motor. After completion, the slide 310 leaves the processing table 100, and the inclined drive 710 drives the adjustment frame 720 to approach the processing table 100, so that the two guide wheels 342 rotate to the vertical axis to prepare for the next grinding process.

[0035] In dual-station grinding, if the loading and unloading directly connect to the processing fixture, the equipment will wait due to the mismatch between the loading / unloading time and the grinding time. A buffer station is needed to coordinate the material flow rhythm. Therefore, in this embodiment, referring to... Figure 4As shown, the processing table 100 is also provided with a first buffer fixture 140 and a second buffer fixture 150. The first buffer fixture 140, the first processing fixture 110, the second processing fixture 120, and the second buffer fixture 150 are arranged at intervals along the length direction of the processing table 100. The transfer mechanism 200 includes a transfer base 221, a transfer translation drive 222, a transfer lifting drive 223, and a transfer lifting plate 224. The transfer translation drive 222 is disposed on the transfer base 221, and the transfer lifting drive 223 is disposed on the transfer translation drive 222. The transfer translation drive 222 can drive the transfer lifting drive 223 along the processing table 100. The transfer lifting plate 224 is disposed on the transfer lifting drive 223, which can drive the transfer lifting plate 224 to move up and down. The transfer lifting plate 224 is provided with the transfer gripper 210 at the positions corresponding to the first buffer fixture 140, the first processing fixture 110, the second processing fixture 120 and the second buffer fixture 150, respectively. It can be understood that the transfer translation drive 222 and the transfer lifting drive 223 are mainly used to provide the driving force for reciprocating movement in a straight line. They have various structural forms, such as electric lead screw, cylinder or hydraulic cylinder, while the transfer gripper 210 can be electric gripper or pneumatic gripper. By setting up a first buffer fixture 140 and a second buffer fixture 150, the motor commutator to be processed can be placed in the first processing fixture 110 in advance. When processing is required, the motor commutator in the first buffer fixture 140 is transferred to the first processing fixture 110. After processing, the motor commutator can be removed from the second processing fixture 120 and temporarily stored in the second buffer fixture 150. This decouples the loading and unloading actions from the processing steps, reduces waiting time between processes, and effectively improves the efficiency of material flow. Meanwhile, four transfer grippers 210 are set on the transfer lifting plate 224, which can lift and move horizontally in one operation. This allows for simultaneous material exchange between multiple fixture positions, significantly reducing the transfer cycle time and making it suitable for continuous mass production. For example, the first transfer gripper 210 is used to transfer materials between the first buffer fixture 140 and the first processing fixture 110; the second transfer gripper 210 is used to transfer materials between the first processing fixture 110 and the second processing fixture 120; the third transfer gripper 210 is used to transfer materials between the second processing fixture 120 and the second buffer fixture 150; and the fourth transfer gripper 210 is used to transfer materials from the second buffer fixture 150 to the next workstation.

[0036] To achieve automatic feeding, grinding, and unloading of commutators, reduce manual intervention, and improve production automation, this invention also includes a conveying device 400, a feeding mechanism 500, and an unloading mechanism 600. The conveying device 400 is located on the side of the processing table 100 away from the processing mechanism 300. The feeding mechanism 500 is used to transfer the material from the conveying device 400 to the first buffer fixture 140, and the unloading mechanism 600 is used to transfer the material from the second buffer fixture 150 to the conveying device 400. The upstream of the conveying device 400 can be connected to the previous workstation for processing motor commutators, feeding the motor commutators to the conveying device 400, which then conveys them close to the processing table 100. The feeding mechanism 500 then transfers the motor commutators to the first buffer fixture 140, while the unloading mechanism 600 returns the polished motor commutators to the conveying device 400, forming a complete automated flow. This reduces labor costs and intensity. The independent setting of loading and unloading allows for simultaneous material input and output, and coordinates with the cycle time of the transfer mechanism 200. This effectively prevents blockage or idling of the motor commutator between different workstations, which is conducive to achieving efficient and continuous automated production.

[0037] It is understood that the conveying device 400 may employ a belt conveyor, roller conveyor, or double-speed chain conveyor to achieve linear material transport. In some embodiments, the conveying device 400 includes two belt conveyors arranged side by side, with opposite conveying directions. A baffle plate and a baffle drive are respectively provided on the side of the two belt conveyors that are furthest from each other. The baffle drive is driven by a baffle element, which can move the baffle element closer to or further away from the baffle plate. A positioning fixture containing a motor commutator is placed on a belt conveyor that feeds towards a baffle plate. The belt conveyor transports the fixture to the corresponding feeding mechanism 500. Then, a baffle drive moves the positioning fixture closer to the baffle, pushing it into another belt conveyor and pressing it firmly against the baffle. At this point, the feeding mechanism 500 can remove the motor commutator from the positioning fixture. The baffle drive then moves the positioning fixture away from the baffle, and the belt conveyor moves the positioning fixture away from the feeding mechanism 500, preparing for the feeding of the next motor commutator. Similarly, a baffle plate, a baffle drive, and a baffle can be installed at the position of the conveyor 400 corresponding to the unloading mechanism 600, thereby transferring the motor commutator removed from the unloading mechanism 600 to the positioning fixture and moving it to the next station.

[0038] In a specific embodiment of the feeding mechanism 500, the feeding mechanism 500 includes a feeding base 510, a feeding translation drive 520, a feeding lifting drive 530, and a feeding lifting plate 540. The feeding translation drive 520 is disposed on the feeding base 510, and the feeding lifting drive 530 is disposed on the feeding translation drive 520. The feeding translation drive 520 can drive the feeding lifting drive 530 to move between the conveying device 400 and the processing table 100. The feeding lifting plate 540 is disposed on the feeding lifting drive 530, and the feeding lifting drive 530 can drive the feeding translation drive 520 to move between the conveying device 400 and the processing table 100. The loading lifting plate 540 moves up and down, and two loading grippers 550 are provided on the loading lifting plate 540. The processing table 100 is provided with a loading transfer fixture. The two loading grippers 550 correspond to the conveying device 400 and the loading transfer fixture, or correspond to the loading transfer fixture and the first buffer fixture 140, respectively. It can be understood that the loading grippers 550 can be electric grippers or pneumatic grippers. The loading lifting drive 530 and the loading translation drive 520 are mainly used to provide the driving force for reciprocating movement in a straight direction. They have various structural forms, such as electric screws, cylinders or hydraulic cylinders. During loading, the loading translation drive 520 moves the loading lifting plate 540 above the conveying device 400. The loading lifting drive 530 lowers the loading lifting plate 540, and then the two loading grippers 550 simultaneously grab the motor commutator on the conveying device 400 and the motor commutator on the loading transfer fixture. They then move upwards and translate horizontally above the loading transfer fixture and the first buffer fixture 140 before being lowered. This single action transfers the motor commutator from the conveying device 400 to the loading transfer fixture, while the motor commutator from the loading transfer fixture is transferred to the first buffer fixture 140, significantly improving loading efficiency. Furthermore, the loading transfer fixture allows for segmented material transfer even when the distance between the conveying device 400 and the processing table 100 is large, increasing the flexibility of the equipment layout.

[0039] As a specific embodiment of the unloading mechanism 600, the unloading mechanism 600 includes an unloading transfer fixture 610, an unloading base 620, an unloading translation drive 630, an unloading lifting drive 640, and an unloading lifting plate. The unloading transfer fixture 610 is disposed on one side of the processing table 100. The unloading translation drive 630 is disposed on the unloading base 620. The unloading lifting drive 640 is disposed on the unloading translation drive 630. The unloading translation drive 630 can drive the unloading lifting drive 640 to move between the conveying device 400 and the unloading transfer fixture 610. The unloading lifting plate is disposed on the unloading lifting drive 640. The unloading lifting drive 640 can drive the unloading lifting plate to move up and down. The unloading lifting plate is provided with an unloading gripper 650. Understandably, the unloading gripper 650 can be an electric or pneumatic gripper. The unloading lifting drive 640 and the unloading translation drive 630 are mainly used to provide the driving force for reciprocating movement in a straight line. They have various structural forms, such as electric lead screws, cylinders, or hydraulic cylinders. During unloading, the transfer gripper 210, which is close to the unloading transfer fixture 610, transfers the motor commutator of the second buffer fixture 150 into the unloading transfer fixture 610. The unloading translation drive 630 moves the unloading lifting plate above the unloading transfer fixture 610. After the unloading lifting drive 640 lowers the unloading lifting plate, the unloading gripper 650 grabs the motor commutator on the unloading transfer fixture 610, moves it upward, and translates it above the conveying device 400 before lowering it. This realizes the transfer and unloading of the motor commutator that has completed the grinding process, greatly improving the unloading efficiency.

[0040] In practical applications, the unloading transfer fixture 610 is slidably connected to the processing table 100. The processing table 100 is equipped with an unloading transfer drive, which moves the unloading transfer fixture 610 closer to or further away from the conveying device 400. The unloading transfer drive can be an electric lead screw, a pneumatic cylinder, or a hydraulic cylinder. When the motor commutator of the second buffer fixture 150 moves to the unloading transfer fixture 610, the unloading transfer drive moves the unloading transfer fixture 610 closer to the conveying device 400. This reduces the travel distance of the unloading gripper 650, allowing material transfer to be completed in segments even if the distance between the conveying device 400 and the processing table 100 is large, increasing the flexibility of equipment layout.

[0041] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A grinding machine for automotive seat motor commutators, characterized in that: include: The processing table (100) is provided with a first processing fixture (110), a second processing fixture (120) and a rotating device (130). The rotating device (130) is connected to the first processing fixture (110) and the second processing fixture (120) in a transmission manner. The rotating device (130) can drive the first processing fixture (110) and the second processing fixture (120) to rotate around the axis in the vertical direction. The transfer mechanism (200) has a transfer gripper (210) that can move between the first processing fixture (110) and the second processing fixture (120). The processing mechanism (300) includes a carriage (310), an unwinding device (320), and a winding device (330). The carriage (310) can move in a direction close to or away from the processing table (100). The carriage (310) is provided with a plurality of guide wheels (342) near the processing table (100). The unwinding device (320) can unwind the grinding belt, and the winding device (330) can wind the grinding belt. The grinding belt unwound by the unwinding device (320) can be guided to the winding device (330) after passing around the plurality of guide wheels (342).

2. The automotive seat motor commutator grinding machine according to claim 1, characterized in that: The slide (310) is provided with a pressure regulating component, which includes a transition wheel (341), a tensioning device and two guide wheels (342). The transition wheel (341) and the tensioning device are respectively disposed on the slide (310). The transition wheel (341) is located on the side of the two guide wheels (342) away from the processing table (100). The tensioning device is located between the two guide wheels (342) and the transition wheel (341). A grinding processing area is formed between the two guide wheels (342). There are two pressure regulating components along the length of the processing table (100). The two grinding processing areas correspond to the first processing fixture (110) and the second processing fixture (120) respectively. The grinding belt released by the unwinding device (320) is guided to the winding device (330) after passing through one transition wheel (341), one tensioning device, two grinding processing areas, another tensioning device, and another transition wheel (341).

3. The automotive seat motor commutator grinding machine according to claim 2, characterized in that: The slide (310) is provided with a fixed clamping plate (343) at the position of the two grinding processing areas. The slide (310) is provided with a belt pressing drive (344). The belt pressing drive (344) is connected to a movable clamping plate (345). The movable clamping plate (345) is located on the side of the fixed clamping plate (343) away from the processing table (100). The belt pressing drive (344) can drive the movable clamping plate (345) to move closer to or away from the fixed clamping plate (343). The grinding belt located between the two grinding processing areas passes through the fixed clamping plate (343) and the movable clamping plate (345).

4. The automotive seat motor commutator grinding machine according to claim 3, characterized in that: The pressure belt drive (344) is provided with a transmission frame (346). The pressure belt drive (344) can drive the transmission frame (346) to move closer to or away from the fixed clamping plate (343). The movable clamping plate (345) is provided on the side of the transmission frame (346) close to the fixed clamping plate (343). The tensioning device includes a slide (351), a tensioning wheel (352), a pressure wheel (353), and a first elastic member. A sliding groove is provided on the top side of the slide (310). The bottom of the slide (351) is slidably connected to the sliding groove. The first elastic member is provided between the slide (351) and the sliding groove. The first elastic member has the function of driving the slide (351) to move closer to the fixed clamping plate (343). The transmission frame (346) slides in the direction described above. The tension wheel (352) is located on the slide (351). The grinding belt between the grinding processing area and the transition wheel (341) passes through the tension wheel (352) and is close to the transmission frame (346). The slide (351) is provided with a guide slope on the side close to the transmission frame (346). The guide slope is inclined towards the processing table (100) and close to the transmission frame (346). The pressure wheel (353) is located on the transmission frame (346). When the transmission frame (346) is close to the fixed clamp (343), it can drive the outer circumferential surface of the pressure wheel (353) to press against the guide slope.

5. The automotive seat motor commutator grinding machine according to claim 4, characterized in that: A spring rod (347) is also provided between the movable clamping plate (345) and the transmission frame (346). The spring rod (347) has a tendency to push the movable clamping plate (345) away from the transmission frame (346). The transmission frame (346) moves closer to the fixed clamping plate (343) so that the movable clamping plate (345) presses against the fixed clamping plate (343), and then the outer peripheral surface of the pressure roller (353) presses against the guide slope.

6. The automotive seat motor commutator grinding machine according to claim 1, characterized in that: The slide (310) is provided with a gantry frame (361), and a pressing drive (362) is provided on the gantry frame (361). The pressing drive (362) is connected to a pressing frame (363). The pressing frame (363) is rotatably connected to a pressing cap (364) corresponding to the positions of the first processing fixture (110) and the second processing fixture (120). The two pressing caps (364) can rotate around the axis in the up and down direction.

7. The automotive seat motor commutator grinding machine according to claim 1, characterized in that: The processing table (100) is also provided with a first buffer fixture (140) and a second buffer fixture (150). The first buffer fixture (140), the first processing fixture (110), the second processing fixture (120), and the second buffer fixture (150) are arranged at intervals along the length of the processing table (100). The transfer mechanism (200) includes a transfer base (221), a transfer translation drive (222), a transfer lifting drive (223), and a transfer lifting plate (224). The transfer translation drive (222) is disposed on the transfer base (221), and the transfer lifting drive (223) is disposed on... The transfer translation drive (222) can drive the transfer lifting drive (223) to move along the length direction of the processing table (100). The transfer lifting plate (224) is disposed on the transfer lifting drive (223). The transfer lifting drive (223) can drive the transfer lifting plate (224) to move up and down. The transfer lifting plate (224) is provided with the transfer gripper (210) at the positions corresponding to the first buffer fixture (140), the first processing fixture (110), the second processing fixture (120) and the second buffer fixture (150).

8. The automotive seat motor commutator grinding machine according to claim 7, characterized in that: It also includes a conveying device (400), a loading mechanism (500) and a unloading mechanism (600). The conveying device (400) is located on the side of the processing table (100) away from the processing mechanism (300). The loading mechanism (500) is used to transfer the material from the conveying device (400) to the first buffer fixture (140). The unloading mechanism (600) is used to transfer the material from the second buffer fixture (150) to the conveying device (400).

9. The automotive seat motor commutator grinding machine according to claim 8, characterized in that: The feeding mechanism (500) includes a feeding base (510), a feeding translation drive (520), a feeding lifting drive (530), and a feeding lifting plate (540). The feeding translation drive (520) is disposed on the feeding base (510), and the feeding lifting drive (530) is disposed on the feeding translation drive (520). The feeding translation drive (520) can drive the feeding lifting drive (530) to move between the conveying device (400) and the processing table (100). The loading lifting plate (540) is disposed on the loading lifting drive (530), and the loading lifting drive (530) can drive the loading lifting plate (540) to move up and down. The loading lifting plate (540) is provided with two loading grippers (550), and the processing table (100) is provided with a loading transfer fixture. The two loading grippers (550) correspond to the conveying device (400) and the loading transfer fixture respectively, or correspond to the loading transfer fixture and the first buffer fixture (140) respectively.

10. The automotive seat motor commutator grinding machine according to claim 8, characterized in that: The unloading mechanism (600) includes an unloading transfer fixture (610), an unloading base (620), an unloading translation drive (630), an unloading lifting drive (640), and an unloading lifting plate. The unloading transfer fixture (610) is located on one side of the processing table (100). The unloading translation drive (630) is located on the unloading base (620). The unloading lifting drive (640) is located on the unloading translation drive (630). The unloading translation drive (630) can drive the unloading lifting drive (640) to move between the conveying device (400) and the unloading transfer fixture (610). The unloading lifting plate is located on the unloading lifting drive (640). The unloading lifting drive (640) can drive the unloading lifting plate to move up and down. The unloading lifting plate is provided with an unloading gripper (650).

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