A commutator outer diameter machining device

Abstract

A commutator outer diameter machining device includes a frame with a loading station, at least two machining stations, and an unloading station arranged sequentially along the machining direction. It also includes a stepping conveyor mechanism, comprising a conveyor seat horizontally reciprocating along the machining direction and mounted on the frame. The conveyor seat has several sets of grippers fixed at intervals along the machining direction for holding the commutator. The spacing between each set of grippers corresponds to the spacing between adjacent stations where the commutator is to be synchronously moved. The conveyor seat is configured to simultaneously move multiple sets of grippers holding the commutator to the next corresponding station through a single horizontal movement. This invention efficiently links various machining processes through the stepping conveyor mechanism, enabling simultaneous transfer of commutators across multiple stations in a single movement, significantly improving overall machining efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of commutator processing equipment, specifically to a commutator outer diameter processing device. Background Technology

[0002] The commutator is a crucial component of a motor, and the quality of its outer diameter machining directly affects the motor's commutation performance and service life. The machining of the commutator's outer diameter typically involves multiple processes, including turning, grinding, and polishing.

[0003] Currently, most existing commutator outer diameter machining devices use independent loading and unloading or a single robotic arm for reciprocating transfer between workstations. Independent loading and unloading requires a loading device at each workstation, resulting in high equipment costs and large space requirements. Using a single robotic arm for reciprocating transfer results in low transfer efficiency, waiting time between workstations, and difficulty in achieving efficient linkage, leading to low overall machining efficiency. Furthermore, some devices use a rotary multi-station turntable for workstation switching, but when the number of workstations is large, the turntable size and rotational inertia are significant, making it difficult to guarantee positioning accuracy and making it unsuitable for linearly arranged machining stations. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a commutator outer circle machining device that can efficiently link various processing steps and improve the overall processing efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A commutator outer diameter machining device includes a frame with a loading station, at least two machining stations, and an unloading station arranged sequentially along the machining direction. It also includes a stepping conveyor mechanism comprising a conveyor seat horizontally reciprocatingly mounted on the frame along the machining direction. The conveyor seat has several sets of grippers fixed at intervals along the machining direction for holding commutators. The spacing between each set of grippers corresponds one-to-one with the spacing between adjacent stations where commutators are to be synchronously conveyed. The conveyor seat is configured to simultaneously move multiple sets of grippers held by the grippers to the next corresponding station in a single horizontal movement. By setting the stepping conveyor mechanism and fixing multiple sets of grippers on the conveyor seat at intervals corresponding to the station spacing, multiple commutators can be synchronously moved to the next station in a single horizontal movement of the conveyor seat. This achieves efficient linkage between machining processes, avoids waiting time between stations, and significantly improves overall machining efficiency.

[0006] Preferably, the machining stations between the loading and unloading stations are, in sequence, turning, grinding, and polishing. By sequentially setting turning, grinding, and polishing, the outer circle of the commutator is machined step by step, which can ensure the dimensional accuracy and surface quality of the outer circle.

[0007] Preferably, the turning station includes a mandrel for mounting and driving the commutator to rotate, the mandrel being vertically mounted on the frame; the transfer seat is vertically mounted on the frame via a lifting drive assembly, so that by lowering and raising the transfer seat at the mandrel, the actions of mounting the commutator onto the mandrel and removing it from the mandrel are completed. Using a mandrel with internal hole positioning to mount the commutator ensures the coaxiality of the commutator's outer circle and inner hole during machining. Simultaneously, the transfer seat has both horizontal and vertical functions, eliminating the need for a separate loading and unloading mechanism for the turning station, resulting in a more compact structure.

[0008] Preferably, the loading station includes a positioning table for receiving and positioning a single commutator, with the mandrel located beside the positioning table. A first set of grippers on the transfer seat moves between the positioning table and the mandrel to transfer the commutator on the positioning table directly above the mandrel. By pre-positioning the commutator to be processed on the positioning table, and with the precise transfer of the first set of grippers, the commutator can be accurately fitted onto the mandrel, improving loading accuracy.

[0009] Preferably, the transfer station is equipped with four sets of grippers, and the transfer station is configured to synchronously transfer the commutator between all workstations through a single horizontal movement. By using four sets of grippers corresponding to five workstations, synchronous transfer across the entire line can be completed in a single movement, maximizing transfer efficiency.

[0010] Preferably, the stepping conveyor mechanism is divided into a first conveyor unit and a second conveyor unit arranged along the processing direction. The first conveyor unit includes a first conveyor seat with grippers for conveying the commutator between the loading station and the first processing station. The second conveyor unit includes a second conveyor seat with grippers for conveying the commutator between at least two subsequent stations. Dividing the stepping conveyor mechanism into two sets of conveyor units can accommodate situations where the spacing between individual processing stations is too large, avoiding reduced structural stability due to excessive length of a single conveyor seat, and improving the layout flexibility of the equipment.

[0011] Preferably, an intermediate conveyor belt and a connecting platform at its output end are provided between the turning station and the grinding station to convey the commutator processed by turning to the connecting platform; the grippers on the first transfer seat are used to transfer the commutator between the loading station, the turning station and the input end of the intermediate conveyor belt; the grippers on the second transfer seat are used to transfer the commutator between the connecting platform, the grinding station, the polishing station and the unloading station. By using the intermediate conveyor belt and the connecting platform as a buffer connection between the two transfer units, the transfer connection problem caused by the large size of the turning station is solved, and the coordinated operation between the two sets of transfer units is ensured.

[0012] Preferably, the second transfer seat is fixedly mounted on the frame, and the grippers on the second transfer seat perform commutator transfer only by horizontal movement. The second transfer seat does not require a lifting function; its fixed mounting simplifies the structure, reduces manufacturing costs, and improves transfer accuracy and stability.

[0013] Preferably, the frame is further provided with a clamping bracket, which spans above the grinding station and the polishing station. The clamping bracket has a first follower pressure head and a second follower pressure head, corresponding to the grinding station and the polishing station respectively, for pressing against the upper end of the commutator from above. Through the cooperation of the upper follower pressure head and the lower rotating seat, the commutator can be reliably clamped, preventing workpiece movement during grinding and polishing and ensuring processing quality. Attached Figure Description

[0014] Figure 1 This is a top view of Embodiment 1 of the present utility model; Figure 2 This is a side view of the stepping conveying mechanism in Embodiment 1 of this utility model; Figure 3 This is a side view of the turning station in Embodiment 1 of this utility model; Figure 4 This is a side view of the grinding station and polishing station in Embodiment 1 of this utility model; Figure 5 This is a top view of Embodiment 2 of this utility model.

[0015] In the diagram: 1. Frame; 2. Vibratory feeder; 3. First conveyor belt; 4. First sensor; 5. Positioning table; 6. First baffle plate; 7. Second sensor; 8. Mandrel; 9. Mounting rod; 10. First motor; 11. Lathe support plate; 12. Machining plate; 13. First guide; 14. Cutting head; 15. First cylinder; 16. First pressure head; 17. Grinding seat; 18. Second motor; 19. Grinding plate; 20. Grinding wheel; 21. Sanding belt; 22. Grinding base plate; 23. Second cylinder; 24. Second guide rod; 25. Grinding upright plate; 26. Third cylinder; 27. Third guide; 28. Third motor; 29. ​​Polishing seat; 30. Fourth motor; 31. Polishing head. 32. Wheel; 33. Fifth motor; 34. Polishing base plate; 35. Polishing upright plate; 36. Fourth cylinder; 37. Fourth guide component; 38. Pressing bracket; 39. Fifth cylinder; 40. Sixth cylinder; 41. First follow-up pressure head; 42. Second follow-up pressure head; 43. Transfer seat; 44. Gripper; 45. Lifting drive assembly; 46. Seventh cylinder; 47. Fifth guide component; 48. Eighth cylinder; 49. Sixth guide component; 50. First pushing cylinder; 51. Output belt; 52. Intermediate conveyor belt; 53. Connecting platform; 54. Inclined baffle; 55. Second baffle plate; 56. Third sensor; 57. Second pushing cylinder; 58. Transfer slider; 59. Fourth sensor. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0017] Example 1: As Figures 1 to 4 The commutator outer diameter machining device shown includes a frame 1, on which a loading station, a turning station, a grinding station, a polishing station and a unloading station are arranged sequentially along the machining direction (X direction in the figure).

[0018] The loading station includes a vibratory feeder 2 and a positioning table 5. The vibratory feeder 2 is located on one side of the frame 1 and is used to convey commutators into the frame 1. The output end of the vibratory feeder 2 is connected to a first conveyor belt 3. A first sensor 4 is located near the output end of the first conveyor belt 3 to detect whether a commutator is on the first conveyor belt 3. The positioning table 5 is located inside the frame 1 and connected to the output end of the first conveyor belt 3, used to receive and position individual commutators. A first baffle plate 6 is located on the side of the positioning table 5 opposite to the first conveyor belt 3. A second sensor 7 is located on the first baffle plate 6, directly opposite the outlet end of the first conveyor belt 3, to detect whether the commutator has been conveyed to the correct position. When the second sensor 7 detects that the commutator has been conveyed to the correct position and the first sensor 4 detects that there is a commutator on the first conveyor belt 3, the first conveyor belt 3 stops to prevent multiple commutators from accumulating on the positioning table 5. The frame 1 has a first pushing cylinder 49 on the side of the positioning table 5 away from the stepping conveying mechanism, which is used to push the commutator on the positioning table 5 toward the side of the stepping conveying mechanism so that the gripper 43 can accurately grasp it.

[0019] The turning station includes a mandrel 8 and a turning assembly. The mandrel 8 consists of a mounting rod 9 and a first motor 10 that drives the mounting rod 9 to rotate. The mounting rod 9 is vertically mounted on the frame 1 and is interference-fitted with the inner hole of the commutator, used to mount the commutator and drive its rotation. The turning assembly includes a lathe support plate 11 that can be raised and lowered on the frame 1. A machining plate 12 is provided on the front side of the lathe support plate 11. The machining plate 12 is horizontally slidably mounted on the lathe support plate 11 via a first guide member 13. A cutting head 14 is provided at the bottom of the machining plate 12, and a first cylinder 15 is provided on the front side of the machining plate 12. The first cylinder 15 is vertically mounted on the machining plate 12, and a first pressure head 16 is provided at the end of the movable end of the first cylinder 15. During machining, the first pressure head 16 moves down to engage the mounting rod 9 through the inner hole of the commutator, connecting the mounting rod 9 with the commutator. The first motor 10 drives the mounting rod 9 to rotate the commutator, and the cutting head 14 approaches the commutator to perform external turning.

[0020] The grinding station includes a grinding base 17 and a grinding assembly. The grinding base 17 is rotatably mounted on the frame 1 and is driven to rotate by a second motor 18. The grinding assembly includes a grinding base plate 22, a grinding vertical plate 25, and a grinding plate 19. The grinding base plate 22 is vertically and flexibly mounted on the frame 1 via a second cylinder 23 and a second guide rod 24. The grinding vertical plate 25 is slidably mounted on the grinding base plate 22. The grinding base plate 22 is equipped with a third cylinder 26 and a third guide member 27 for controlling the grinding vertical plate 25 to move closer to or away from the grinding base 17. The grinding plate 19 is mounted on the grinding vertical plate 25. Three grinding wheels 20 are rotatably mounted on the grinding plate 19. The three grinding wheels 20 are triangularly distributed at the bottom of the grinding plate 19, and sanding belts 21 are fitted onto the three grinding wheels 20. A third motor 28 is provided on the grinding plate 25. The third motor 28 is connected to one of the grinding wheels 20 and drives the sanding belt 21 to rotate.

[0021] The polishing station includes a polishing base 29 and a polishing assembly. The polishing base 29 is rotatably mounted on the frame 1 and is driven to rotate by a fourth motor 30. The polishing assembly includes a polishing base plate 33, a polishing upright plate 34, and a polishing wheel 31. The polishing base plate 33 is mounted on the frame 1, and the polishing upright plate 34 is slidably mounted on the polishing base plate 33. The polishing base plate 33 is equipped with a fourth cylinder 35 and a fourth guide member 36 for controlling the polishing upright plate 34 to move closer to or away from the polishing base 29. The polishing wheel 31 is rotatably mounted on the polishing upright plate 34 and is driven to rotate by a fifth motor 32 mounted on the polishing upright plate 34.

[0022] A clamping bracket 37 is also provided on the frame 1, spanning above the grinding station and the polishing station. A fifth cylinder 38 and a sixth cylinder 39 are respectively installed on the clamping bracket 37 at the corresponding positions of the grinding seat 17 and the polishing seat 29. A first follower pressure head 40 is rotatably mounted on the movable end of the fifth cylinder 38, and a second follower pressure head 41 is rotatably mounted on the movable end of the sixth cylinder 39. During grinding, the commutator is placed on the grinding seat 17, the first follower pressure head 40 moves down to abut against the upper end of the commutator, the grinding seat 17 drives the commutator to rotate, and the sanding belt 21 approaches the commutator to grind its outer circumference. During polishing, the commutator is placed on the polishing seat 29, the second follower pressure head 41 moves down to abut against the upper end of the commutator, the polishing seat 29 drives the commutator to rotate, and the polishing wheel 31 approaches the commutator to polish its outer circumference.

[0023] The unloading station has an output belt of 50, which is used to output the processed commutator.

[0024] The core improvement of this embodiment lies in the stepping transfer mechanism. The stepping transfer mechanism includes a transfer seat 42, which is vertically and flexibly mounted on the frame 1 via a lifting drive assembly 44. The lifting drive assembly 44 includes a seventh cylinder 45 and a fifth guide member 46, used to drive the overall lifting and lowering of the transfer seat 42. A transfer slider 57 is slidably mounted on the transfer seat 42. An eighth cylinder 47 and a sixth guide member 48 are also mounted on the transfer seat 42. The transfer slider 57 reciprocates horizontally along the processing direction via the eighth cylinder 47 and the sixth guide member 48. Four sets of grippers 43 for holding the commutator are fixedly fixed at intervals along the processing direction on the transfer slider 57. The four sets of grippers 43 are designated as the first set of grippers, the second set of grippers, the third set of grippers, and the fourth set of grippers. The spacing between each set of grippers 43 corresponds one-to-one with the spacing between the following adjacent workstations: positioning table 5 and spindle 8, spindle 8 and grinding seat 17, grinding seat 17 and polishing seat 29, and polishing seat 29 and output belt 50. The transfer seat 42 is configured such that, through one horizontal movement, the first set of grippers moves the commutator on the positioning table 5 directly above the spindle 8, the second set of grippers moves the commutator on the spindle 8 directly above the grinding seat 17, the third set of grippers moves the commutator on the grinding seat 17 directly above the polishing seat 29, and the fourth set of grippers moves the commutator on the polishing seat 29 directly above the output belt 50.

[0025] During processing, the transfer seat 42 is initially in a lowered state, with each set of grippers 43 picking up the commutator from its corresponding station. The transfer seat 42 then rises, pulling the commutator from the mounting rod 9 onto the spindle 8. Next, the eighth cylinder 47 drives the transfer slider 57 to move horizontally one step, positioning each set of grippers 43 directly above the next station. The transfer seat 42 then descends again, with the first set of grippers mounting the commutator onto the mounting rod 9, and the remaining grippers placing the commutator onto the corresponding grinding seat 17, polishing seat 29, and output belt 50. After the grippers 43 release, the transfer seat 42 rises, and the eighth cylinder 47 drives the transfer slider 57 to move horizontally in the opposite direction to reset, completing one transfer cycle. During this process, each processing station can operate synchronously, achieving efficient linkage between processes.

[0026] Example 2: Figure 5 As shown, the main difference between this embodiment and Embodiment 1 is that, due to the larger overall size of the turning station, the distance between the mandrel 8 and the grinding seat 17 is significantly greater than the distance between other adjacent stations.

[0027] In this embodiment, the stepping conveyor mechanism is divided into a first conveyor unit and a second conveyor unit arranged along the processing direction. Simultaneously, an intermediate conveyor belt 51 and a connecting platform 52 located at its output end are added between the turning station and the grinding station to convey the commutator processed by turning to the connecting platform 52. An inclined baffle 53 is provided on the intermediate conveyor belt 51, guiding the commutator to the corresponding position on the connecting platform 52. A fourth sensor 58 is provided on the inclined baffle 53 near the outlet of the intermediate conveyor belt 51. The structure of the connecting platform 52 is consistent with that of the positioning platform 5. A second baffle 54 is provided on the side of the connecting platform 52 opposite to the intermediate conveyor belt 51. A third sensor 55 is provided on the second baffle 54 directly opposite the outlet end of the intermediate conveyor belt 51 to detect whether the commutator has been conveyed to the correct position. A second pusher cylinder 56 is provided on the side of the connecting platform 52 away from the second conveyor unit on the frame 1.

[0028] The first transfer unit includes a first transfer seat with two sets of grippers. The first set of grippers transfers the commutator between the positioning table 5 and the spindle 8, and the second set of grippers transfers the commutator between the spindle 8 and the input end of the intermediate conveyor belt 51. The first transfer seat can be raised and lowered via a lifting drive assembly to enable lifting and picking operations at the spindle 8.

[0029] The second transfer unit includes a second transfer seat with three sets of grippers. The first set of grippers transfers the commutator between the connecting table 52 and the grinding table 17; the second set of grippers transfers the commutator between the grinding table 17 and the polishing table 29; and the third set of grippers transfers the commutator between the polishing table 29 and the output belt 50. Since the connecting table 52, the grinding table 17, the polishing table 29, and the output belt 50 do not require lifting or lowering, the second transfer seat is fixedly mounted on the frame 1, and the grippers 43 on it only perform commutator transfer by horizontal movement, resulting in a simpler structure.

[0030] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here. By setting the stepping conveyor mechanism into two groups and introducing an intermediate buffer connection, the high efficiency of process linkage is maintained, while adapting to actual layout requirements, thus improving the applicability and stability of the equipment.

Claims

1. A commutator outer diameter machining device, comprising a frame (1), wherein the frame (1) is provided with a loading station, at least two machining stations, and a unloading station arranged sequentially along the machining direction, characterized in that, Also includes: The stepping transfer mechanism includes a transfer seat (42) that is horizontally reciprocating on the frame (1) along the processing direction, and a plurality of grippers (43) for holding the commutator are fixed at intervals along the processing direction on the transfer seat (42). The spacing between each set of grippers (43) is set in a one-to-one correspondence with the spacing between each adjacent station of the commutator to be synchronously transferred; The transfer station (42) is configured to simultaneously transfer the commutators held by multiple sets of grippers (43) to the corresponding next workstation by a single horizontal movement.

2. The commutator outer diameter machining device according to claim 1, characterized in that, The processing stations between the loading station and the unloading station are, in sequence, turning station, grinding station, and polishing station.

3. The commutator outer diameter machining device according to claim 2, characterized in that, The turning station includes a spindle (8) for mounting a commutator and driving it to rotate, the spindle (8) being vertically mounted on the frame (1); The transfer seat (42) is vertically mounted on the frame (1) via a lifting drive assembly (44) so ​​that the commutator can be mounted on and removed from the spindle (8) by the descent and rise of the transfer seat (42) at the spindle (8).

4. The commutator outer diameter machining device according to claim 3, characterized in that, The loading station includes a positioning table (5) for receiving and positioning a single commutator, and the spindle (8) is located beside the positioning table (5). The first set of grippers (43) on the transfer seat (42) moves between the positioning table (5) and the spindle (8) to transfer the commutator on the positioning table (5) directly above the spindle (8).

5. A commutator outer diameter machining device according to claim 2, characterized in that, The transfer seat (42) is provided with four sets of grippers (43), and the transfer seat (42) is configured to synchronously complete the transfer of commutators between all workstations through a single horizontal movement.

6. The commutator outer diameter machining device according to claim 2, characterized in that, The stepping conveying mechanism is divided into a first conveying unit and a second conveying unit arranged along the processing direction; The first transfer unit includes a first transfer seat, on which grippers (43) for a transfer commutator between the loading station and the first processing station are provided. The second transfer unit includes a second transfer seat having grippers (43) for transferring the commutator between at least two subsequent workstations.

7. A commutator outer diameter machining device according to claim 6, characterized in that, An intermediate conveyor belt (51) and a connecting platform (52) located at its output end are provided between the turning station and the grinding station to convey the commutator processed by turning to the connecting platform (52). The gripper (43) on the first transfer seat is used to transfer the commutator between the loading station, the turning station and the input end of the intermediate conveyor belt (51); The gripper (43) on the second transfer seat is used to transfer the reversing device between the docking station (52), the grinding station, the polishing station and the unloading station.

8. The commutator outer diameter machining device according to claim 7, characterized in that, The second transfer seat is fixedly mounted on the frame (1), and the gripper (43) on the second transfer seat performs commutator transfer only by horizontal movement.

9. A commutator outer diameter machining device according to claim 2, characterized in that, The frame (1) is also provided with a clamping bracket (37), which spans across the grinding station and the polishing station. The clamping bracket (37) is provided with a first follower pressure head (40) and a second follower pressure head (41) for pressing against the upper end of the commutator from above, corresponding to the grinding station and the polishing station, respectively.

Images