A keyway milling device for a motor output shaft

Abstract

This invention relates to the technical field of motor shaft milling, and provides a keyway milling device for motor output shafts, including a milling machine, a mounting frame, a V-shaped plate, a fixed cylinder, and a top cone structure. The milling machine is fixedly equipped with the mounting frame, which has a V-shaped plate. A top cone structure is fitted to one side of the upper end of the mounting frame. Multiple fixed frames are fixedly connected to the outer wall of the fixed cylinder, and sliders are slidably connected within each frame. A diameter adjustment component is provided between the sliders and the V-shaped plate within the fixed frames, and a synchronization component is provided between the sliders. Multiple movable tubes are slidably connected to each slider, and an outer suction cup is fixedly connected to the other end of each movable tube. A rear cover is fixedly connected to one end of the fixed cylinder, and a hollow tube is fixedly installed on the rear cover. A fitted top cone is fixedly connected to one end of the hollow tube. This invention has the advantages of eliminating the need for manual clamping force adjustment, quick assembly and disassembly, adaptability to motor shafts of different diameters, and continuous machining of multiple keyways.

Description

Technical Field

[0001] This invention relates to the technical field of motor shaft milling, and more particularly to a keyway milling device for motor output shafts. Background Technology

[0002] In the field of motor manufacturing and processing, the motor output shaft, as a core component for power transmission, directly determines the assembly accuracy of the motor and subsequent transmission mechanisms, as well as the power transmission efficiency, through the precision of its keyway machining. Keyway milling is a critical process in the machining of motor output shafts, requiring strict control over the keyway's dimensional accuracy, symmetry, and surface roughness to meet the stringent requirements for power transmission stability under heavy loads, high speeds, and other actual operating conditions.

[0003] Existing clamping and fixing methods for keyway milling devices for motor output shafts mainly fall into two categories: one is to use a chuck to clamp the cylindrical sidewall of one end of the output shaft, while a top cone is used to press against the reserved center hole at the other end of the shaft for positioning; the other is to directly clamp the cylindrical sidewall of one end of the output shaft with a flat-jaw vise, and use a top cone to press against the reserved center hole at the other end of the shaft for fixing. However, both clamping methods require manual clamping and unclamping operations, which is not only time-consuming and labor-intensive, significantly reducing overall production efficiency, but also makes it difficult to control the clamping force, as both the chuck and the flat-jaw vise fix the shaft by clamping the sidewall. Excessive clamping force can easily lead to plastic deformation of the sidewall of the shaft, while insufficient clamping force cannot resist the cutting force during milling, and the shaft may move, both of which will affect the machining accuracy of the keyway.

[0004] Therefore, in view of the above situation, there is an urgent need to develop a keyway milling device for motor output shafts to overcome the shortcomings in current practical applications. Summary of the Invention

[0005] The purpose of this invention is to provide a keyway milling device for a motor output shaft, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A keyway milling device for a motor output shaft includes a milling machine, a mounting frame, a V-plate, a fixed cylinder, and a top cone structure. The mounting frame is fixedly mounted on the milling machine, the V-plate is fitted on the mounting frame, and the top cone structure is connected to one side of the upper end of the mounting frame. The outer wall of the fixed cylinder is fixedly connected with multiple evenly distributed fixed frames. Each fixed frame has a slider slidably connected inside it. One fixed frame is fixedly connected to the placement frame, and an adjustment component is provided between the slider and the V-shaped plate in the fixed frame. The adjustment component controls the slider and the V-shaped plate to rise and fall synchronously. The remaining fixed frames are all fixedly provided with guide rods that are slidably connected to the sliders. A synchronization component is provided between the multiple sliders. Each slider is slidably connected with multiple movable slide tubes, and the other end of each movable slide tube is fixedly connected to an outer suction cup. One end of the fixed cylinder is fixedly connected to a rear cover, and a hollow tube is fixedly installed on the rear cover. The other end of the hollow tube passes through the fixed cylinder and is fixedly connected to a mating top cone.

[0007] A further technical solution includes a micro-movement component cooperating between multiple outer suction cups, a rotating component rotatably sleeved on the outer wall of the cavity tube, and the rotating component meshing with the diameter adjustment component. Multiple evenly distributed fixed sliding tubes are slidably connected to the rotating component, and an inner suction cup is fixedly connected to one end of each fixed sliding tube. A mating ring is slidably connected between multiple fixed sliding tubes, and two second fixing plates located on both sides of the mating ring are fixedly connected to each fixed sliding tube. The mating ring is cooperating with the micro-movement component, and a second spring is sleeved on each fixed sliding tube, with the second spring located between the mating ring and the second fixing plate away from the back cover.

[0008] A further technical solution is that an air pipe is connected to one end of the cavity tube near the rear cover, and a chamfer is opened on the edge of the cavity tube near the mating top cone. Multiple air jet holes are evenly distributed circumferentially at the chamfer position. Support plates are fixedly connected to multiple movable tubes on the same slider, and brushes can be detachably connected to each support plate.

[0009] A further technical solution is that, when the outer suction cup is not in contact with the end face of the output shaft of the motor to be processed, the right end of the brush protrudes from the adsorption end face of the outer suction cup, and the left end of the brush extends to the side of the outer suction cup away from the adsorption end face.

[0010] A further technical solution includes a lifting groove, a connecting plate, a support plate, a worm gear, a first threaded rod, a first worm wheel, a second worm wheel, a second threaded rod, and a motor. The upper end face of the placement frame has a lifting groove, and a connecting plate is slidably connected within the lifting groove. The connecting plate is fixedly connected to a V-shaped plate. Two support plates are also fixedly connected to the placement frame, and a worm gear is rotatably connected between the two support plates. One end of the worm gear passes through a support plate and is fixedly connected to a motor. A first threaded rod and a second threaded rod are also rotatably connected to the placement frame. The second threaded rod is threadedly connected to the connecting plate. A second worm wheel is fixedly sleeved on the outer wall of the second threaded rod, and the second worm wheel meshes with the worm gear. A first worm wheel is fixedly sleeved on the outer wall of the first threaded rod, and the first worm wheel meshes with the worm gear. The upper end of the first threaded rod passes through a fixed frame and is located inside a fixed cylinder, and the first threaded rod is threadedly connected to a slider within the fixed frame.

[0011] In a further technical solution, the rotating assembly includes a rotating cylinder, a first gear, a first fixed lug, and a second gear; the upper end of the first threaded rod is fixedly connected to the second gear, one end of the fixed cylinder is rotatably connected to the rotating cylinder, and the inner wall of the rotating cylinder is rotatably connected to the cavity tube; one end of the rotating cylinder has a plurality of circumferentially evenly distributed first fixed lugs fixedly connected to its outer wall, each first fixed lug being slidably connected to a fixed sliding tube; the other end of the rotating cylinder is fixedly connected to the first gear, and the first gear meshes with the second gear.

[0012] In a further technical solution, the synchronization component includes a sleeve, a second fixing lug, and a rotating plate; the sleeve is rotatably sleeved on the outer wall of the cavity tube, and a plurality of evenly distributed second fixing lugs are fixedly connected to the outer wall of the sleeve, with each second fixing lug corresponding to a slider, and a rotating plate rotatably connecting each second fixing lug to its corresponding slider.

[0013] A further technical solution includes a connecting frame, a sliding groove, a first fixing plate, and an electric push rod. The connecting frame is rotatably connected to the outer wall of the ring. An electric push rod is fixedly connected to one of the fixing frames. The driving end of the electric push rod is fixedly connected to the connecting frame. The connecting frame has multiple sliding grooves, and each sliding groove corresponds to a movable sliding tube. The movable sliding tube passes through the corresponding sliding groove. Two first fixing plates are fixedly sleeved between multiple movable sliding tubes on the same slider. The two first fixing plates are located on both sides of the connecting frame. A first spring is provided between the connecting frame and the first fixing plate away from the back cover. The first spring is sleeved on the outer wall of the movable sliding tube.

[0014] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art: 1. The top cone structure and matching top cone are used to tighten the pre-drilled holes at both ends of the motor output shaft to achieve axial limiting; the outer suction cup electromagnetically adsorbs the end face of the motor output shaft to achieve circumferential anti-rotation fixation. During disassembly, it is only necessary to control the outer suction cup to turn off the power and move the top cone structure away from the motor shaft to complete the part removal, simplifying the clamping and disassembly process, eliminating the need for manual adjustment of clamping force, greatly shortening auxiliary time and improving production efficiency. 2. The diameter adjustment component drives the V-shaped plate to rise and fall synchronously with one of the sliders. In conjunction with the synchronization component, it drives multiple sliders to move closer and further away synchronously. The sliders drive the moving slide tube and the outer suction cup to adjust synchronously, changing the radius of the circle formed by the outer suction cup. This adapts to motor shafts of different diameters without the need to change the clamps. It can quickly adapt to motor output shafts of different diameters, improve the versatility of the device, reduce debugging time, and lower adaptation costs. 3. An inner suction cup and a rotating assembly are provided. After the inner suction cup is attached to the end face of the motor shaft, the rotating assembly drives the motor shaft to rotate precisely. During the adjustment process, the micro-movement assembly controls the outer suction cup to move away from the motor shaft. The diameter adjustment assembly drives the outer suction cup to form a circle with a radius larger than the end face radius of the motor shaft, avoiding interference and eliminating the need for repeated clamping. This enables continuous processing of multiple keyways, reduces cumulative positioning errors, improves the circumferential distribution accuracy of the keyways, and ensures the stability of the processing process. 4. An external air pipe is connected to the cavity tube, and a chamfer with an air jet hole is opened near the mating top cone end. Impurities on the end face are blown away by high-pressure gas. The two ends of the brush are set across the outer suction cup to ensure that the outer suction cup is always in contact with the end face of the motor shaft during the adjustment process, cleaning residual impurities. The high-pressure gas blowing and brush cleaning work together to ensure effective contact between the suction cup and the end face of the motor shaft, avoiding the weakening of the adsorption force and the failure of the anti-rotation, thus improving the clamping stability and processing reliability.

[0015] To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A three-dimensional structural diagram of the middle section; Figure 3 For the present invention Figure 2 A schematic diagram of the three-dimensional structure from another perspective; Figure 4 This is a three-dimensional structural diagram of the diameter adjustment component in this invention; Figure 5 For the present invention Figure 2 Enlarged 3D structural diagram at point A; Figure 6 For the present invention Figure 5 A three-dimensional cross-sectional schematic diagram of part of the structure; Figure 7 For the present invention Figure 5 Exploded view of the middle structure; Figure 8 This is a three-dimensional structural diagram of the fixed cylinder portion in this invention; Figure 9 For the present invention Figure 7 Exploded view of the middle section of the structure.

[0017] In the diagram: 1. Milling machine; 2. Placement frame; 3. V-shaped plate; 4. Diameter adjustment assembly; 41. Lifting groove; 42. Connecting plate; 43. Support plate; 44. Worm gear; 45. First threaded rod; 46. First worm wheel; 47. Second worm wheel; 48. Second threaded rod; 49. Motor; 5. Fixed cylinder; 6. Fixed frame; 7. Slider; 8. Guide rod; 9. Moving slide tube; 10. Outer suction cup; 11. Support plate; 12. Brush; 13. Micro-movement assembly; 131. Connecting frame; 32. Slide groove; 133. First fixed plate; 134. Electric push rod; 14. Rear cover; 15. Cavity tube; 16. Matching top cone; 17. Air jet hole; 18. Matching ring; 19. Fixed slide tube; 20. Rotating assembly; 201. Rotating cylinder; 202. First gear; 203. First fixed ear; 204. Second gear; 21. Synchronization assembly; 211. Sleeve; 212. Second fixed ear; 213. Rotating plate; 22. Top cone structure; 23. Second fixed plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0020] like Figures 1-9 As shown, this embodiment of the invention provides a keyway milling device for a motor output shaft, including a milling machine 1, a placement frame 2, a V-shaped plate 3, a fixed cylinder 5, and a top cone structure 22. The placement frame 2 is fixedly mounted on the milling machine 1, the V-shaped plate 3 is fitted on the placement frame 2, and the top cone structure 22 is fitted to one side of the upper end of the placement frame 2. Multiple evenly distributed fixed frames 6 are fixedly connected to the outer wall of the fixed cylinder 5. Each fixed frame 6 has a slider 7 slidably connected inside it. One fixed frame 6 is fixedly connected to the placement frame 2, and an adjustment component 4 is provided between the slider 7 and the V-shaped plate 3 in the fixed frame 6. The adjustment component 4 controls the slider 7 and the V-shaped plate 3 to rise and fall synchronously. The remaining fixed frames 6 are all fixedly provided with guide rods 8 that are slidably connected to the slider 7. A synchronization component 21 is provided between the multiple sliders 7. The synchronization component 21 controls the multiple sliders 7 to move closer or further away from each other synchronously. Each slider 7 is slidably connected with multiple movable sliding tubes 9, and the other end of each movable sliding tube 9 is fixedly connected to an outer suction cup 10. One end of the fixed cylinder 5 is fixedly connected to a rear cover 14, a cavity tube 15 is fixedly installed on the rear cover 14, and the other end of the cavity tube 15 passes through the fixed cylinder 5 and is fixedly connected to a mating top cone 16. A micro-movement component 13 is provided between the multiple outer suction cups 10 to adjust the distance between the outer suction cups 10 and the end face of the motor output shaft to be slotted.

[0021] It is understandable that, for motor output shafts of different diameters to be slotted, the suction force of the outer suction cup 10 on the end face of the motor output shaft can be adjusted to save the appropriate data, so that the data can be directly called up for electromagnetic adsorption fixation of the same motor shaft; the milling machine 1 opens a keyway on the outer wall of the motor output shaft near the top cone structure 22.

[0022] Specifically, the motor output shaft with the keyway to be milled is placed on the V-plate 3. The top cone structure 22 is controlled to press against the pre-drilled hole at one end of the motor output shaft. At the same time, the top cone 16 presses against the pre-drilled hole at the other end face of the motor output shaft, thereby restricting the axial movement of the motor output shaft. Then, the distance between the outer suction cup 10 and the shaft end face of the motor output shaft is adjusted by the micro-movement component 13 until the outer suction cup 10 adheres to and adsorbs the end face of the motor output shaft, thereby restricting the circumferential rotation of the motor output shaft and fixing and clamping the motor output shaft. When it is necessary to remove the motor output shaft, the power to the outer suction cup 10 is turned off to stop adsorbing the motor output shaft, and then the control is... The top cone structure 22 is located away from the motor output shaft and can be quickly removed. Compared with the existing technology, clamping and disassembly are simple and quick, which can effectively improve production efficiency and eliminate the need for manual adjustment of clamping force. The V-shaped plate 3 and one of the sliders 7 are raised and lowered synchronously by the diameter adjustment component 4. The slider 7 and the V-shaped plate 3 have the same lifting distance. Multiple sliders 7 move closer or further away from each other synchronously by the synchronization component 21. Then, the sliders 7 drive the corresponding multiple moving tubes 9 to move closer or further away from each other, thereby controlling the outer suction cups 10 on the multiple sliders 7 to move closer or further away from each other, so as to adapt to motor output shafts of different diameters.

[0023] like Figures 2-9As shown, a rotating assembly 20 is rotatably sleeved on the outer wall of the cavity tube 15, and the rotating assembly 20 is meshed with the diameter adjustment assembly 4. Multiple evenly distributed fixed sliding tubes 19 are slidably connected on the rotating assembly 20. One end of each fixed sliding tube 19 is fixedly connected to an inner suction cup (not marked in the figure). A mating ring 18 is slidably connected between the multiple fixed sliding tubes 19. Two second fixing plates 23 located on both sides of the mating ring 18 are fixedly connected to each fixed sliding tube 19. The mating ring 18 is mated with a micro-movement assembly 13. The micro-movement assembly 13 drives the moving sliding tube 9 and the fixed sliding tube 19 to move synchronously by cooperating with the mating ring 18. A second spring (not marked in the figure) is sleeved on each fixed sliding tube 19, and the second spring is located between the mating ring 18 and the second fixing plate 23 away from the back cover 14.

[0024] It is understandable that, with the motor drive shaft speed in the diameter adjustment component 4 remaining constant, the rotation angle of the motor output shaft to be processed can be calculated based on the time interval between the moment when the inner suction cup is energized and adsorbs the motor output shaft to be processed and the moment when the inner suction cup is de-energized and stops adsorption. The above technology belongs to the prior art and will not be described in detail here.

[0025] Specifically, multiple circumferentially evenly distributed keyways need to be made on the outer surface of the motor output shaft. When it is necessary to control the rotation of the motor output shaft, the moving slide tube 9 and the mating ring 18 are first moved closer to the rear cover 14 by the micro-movement component 13. The mating ring 18 drives the fixed slide tube 19 to move closer to the rear cover 14 through the second fixing plate 23 until the outer suction cup 10 and the inner suction cup are both detached from the end face of the motor output shaft. Then, the V-shaped plate 3 is lowered and detached from the motor output shaft by the diameter adjustment component 4. The diameter adjustment component 4 simultaneously drives the multiple sliders 7 to move away from each other. The radius of the circle formed by the outer suction cups 10 on the multiple sliders 7 is larger than the radius of the end face of the motor output shaft, thereby avoiding interference between the outer suction cup 10 and the outer surface of the motor output shaft during the rotation of the motor output shaft driven by the inner suction cup. Then, the micro-moving component 13 drives the mating ring 18 to move away from the rear cover 14. The mating ring 18 drives the inner suction cup to adhere to the end face of the motor output shaft. Then, the inner suction cup is energized to attract the suction. After that, the diameter adjustment component 4 is controlled to drive the V-shaped plate 3 to rise, the rotating component 20 to rotate, and the multiple outer suction cups 10 to gradually approach each other. Then, the rotating component 20 drives the multiple fixed slide tubes 19 to rotate around the axis of the motor output shaft until the next keyway to be opened is reached (at this time, the radius of the circle formed by the outer suction cups 10 on the multiple sliders 7 is still larger than the radius of the end face of the motor output shaft). Then, the inner suction cup is de-energized. Then, the outer suction cup 10 and the inner suction cup are controlled by the micro-movement component 13 to move closer to the rear cover 14. Then, the diameter adjustment component 4 is controlled to continue to drive the V-shaped plate 3 to rise. The diameter adjustment component 4 simultaneously drives multiple outer suction cups 10 to move closer to each other until the V-shaped plate 3 is in contact with the outer wall of the motor output shaft (at this time, the radius of the circle formed by the outer suction cups 10 on multiple sliders 7 is smaller than the radius of the end face of the motor output shaft). Then, the outer suction cup 10 is controlled by the micro-movement component 13 to be in contact with the end face of the motor output shaft. Then, the outer suction cup 10 is energized to adsorb and fix the end face of the motor output shaft. Then, the keyway is milled on the motor output shaft by the milling machine 1. When the inner suction cup is attached to the end face of the motor output shaft, the inner suction cup can drive the fixed slide tube 19 to move closer to the rear cover 14. Then the fixed slide tube 19 drives the second fixing plate 23 to compress the second spring, thereby effectively avoiding direct rigid collision between the inner suction cup and the end face of the motor output shaft through the second spring.

[0026] Furthermore, such as Figures 7-9 As shown, the cavity tube 15 is connected to an external air pipe at one end near the rear cover 14, and the edge of the cavity tube 15 near the mating top cone 16 is chamfered, and multiple circumferentially evenly distributed air jet holes 17 are provided at the chamfer position; multiple movable sliding tubes 9 on the same slider 7 are fixedly connected to a support plate 11, and a brush 12 can be detachably connected to each support plate 11.

[0027] Furthermore, when the outer suction cup 10 is not in contact with the end face of the motor output shaft to be processed, the right end of the brush 12 protrudes from the adsorption end face of the outer suction cup 10, and the left end of the brush 12 extends to the side of the outer suction cup 10 away from the adsorption end face. With this structural setting, it can be ensured that during the movement of multiple outer suction cups 10 moving closer or further away from each other through the synchronization component 21, the brush 12 always maintains contact with the end face of the motor output shaft, and thus the cleaning action of the brush 12 effectively removes the chips, dust and other impurities remaining on the end face of the motor output shaft.

[0028] Understandably, the machining process of the motor output shaft involves rough turning, semi-finish turning, finish turning / grinding, keyway / spline machining, and surface treatment. Two types of residues remain on the end face after finish turning / grinding: trace amounts of chips / dust (discrete hard particles) and trace amounts of oil film. The electromagnetic chuck's adsorption force relies on "magnetic lines penetrating the shaft to form a closed magnetic circuit." Chips / dust disrupt this mechanism at its source. When the electromagnetic chuck adsorbs the output shaft of a ferromagnetic motor, the residual chips, dust, and other hard impurities on the end face form a magnetic isolation layer, leading to weakened adsorption force, positioning deviation, and wear on the chuck and shaft end face. The trace amount of oil film, however, does not block the magnetic circuit; instead, it helps protect the surface. Furthermore, during the milling of the keyway on the motor output shaft, trace amounts of chips / dust also adhere to the end face of the motor shaft away from the top cone structure 22. These can all be removed by the brush 12 in conjunction with high-pressure gas.

[0029] In practical applications, high-pressure gas is injected into the cavity tube 15 through an external air pipe. Then, the high-pressure gas is sprayed onto the end face of the motor output shaft through the jet hole 17, thereby removing chips, dust and other impurities from the end face, ensuring effective contact between the electromagnetic chuck and the end face, and avoiding a decrease in adsorption force, failure of anti-rotation or surface damage. The high-pressure gas blows away most of the impurities first, and the brush 12 treats the remaining adhesive chips, further improving the removal effect of impurities.

[0030] like Figures 2-4 and Figure 8 As shown, the diameter adjustment assembly 4 includes a lifting groove 41, a connecting plate 42, a support plate 43, a worm gear 44, a first threaded rod 45, a first worm wheel 46, a second worm wheel 47, a second threaded rod 48, and a motor 49. The upper surface of the placement frame 2 has a lifting groove 41, within which the connecting plate 42 is slidably connected. The connecting plate 42 is fixedly connected to the V-shaped plate 3. Two support plates 43 are also fixedly connected to the placement frame 2, and a worm gear 44 is rotatably connected between the two support plates 43. One end of the worm gear 44 passes through the support plate 43 and is fixedly connected to the motor 49. The placement frame 2 is also rotatably connected to a first threaded rod 45 and a second threaded rod 48. The second threaded rod 48 is threadedly connected to the connecting plate 42. A second worm gear 47 is fixedly sleeved on the outer wall of the second threaded rod 48, and the second worm gear 47 is meshed with the worm 44. A first worm gear 46 is fixedly sleeved on the outer wall of the first threaded rod 45, and the first worm gear 46 is meshed with the worm 44. The upper end of the first threaded rod 45 passes through the fixed frame 6 and is located inside the fixed cylinder 5. The first threaded rod 45 is threadedly connected to the slider 7 inside the fixed frame 6.

[0031] Specifically, the drive end of the control motor 49 rotates, and then the drive end of the motor 49 drives the worm gear 44 to rotate. Then the worm gear 44 drives the first worm wheel 46 and the second worm wheel 47 to rotate synchronously. The second worm wheel 47 drives the second threaded rod 48 to rotate. The second threaded rod 48 drives the connecting plate 42 to rise and fall. The connecting plate 42 drives the V-shaped plate 3 to rise and fall. The first worm wheel 46 drives the first threaded rod 45 to rise and fall synchronously. Then the first threaded rod 45 drives the corresponding slider 7 to rise and fall. The slider 7 and the V-shaped plate 3 rise and fall by the same distance. Multiple sliders 7 are linked together through the synchronization component 21, so that multiple moving slide tubes 9 can move synchronously with the V-shaped plate 3, thereby adapting to motor output shafts of different diameters.

[0032] like Figure 6 , Figure 8 and Figure 9 As shown, the rotating assembly 20 includes a rotating cylinder 201, a first gear 202, a first fixed lug 203, and a second gear 204; the upper end of the first threaded rod 45 is fixedly connected to the second gear 204, one end of the fixed cylinder 5 is rotatably connected to the rotating cylinder 201, and the inner wall of the rotating cylinder 201 is rotatably connected to the cavity tube 15; a plurality of circumferentially evenly distributed first fixed lugs 203 are fixedly connected to the outer wall of one end of the rotating cylinder 201, and a fixed sliding tube 19 is slidably connected to each first fixed lug 203; the other end of the rotating cylinder 201 is fixedly connected to the first gear 202, and the first gear 202 meshes with the second gear 204.

[0033] Furthermore, the outer suction cup 10 on the moving slide tube 9 can be connected to an external power source, and the power source electrically connected to the inner suction cup can be built into the fixed slide tube 19, thereby avoiding wire harness tangling.

[0034] In a specific application, the first threaded rod 45 drives the second gear 204 to rotate, then the second gear 204 drives the rotating cylinder 201 to rotate, then the rotating cylinder 201 drives the first fixed ear 203 to rotate around the axis of the rotating cylinder 201, then the first fixed ear 203 drives multiple fixed slide tubes 19 to rotate around the axis of the rotating cylinder 201, the fixed slide tubes 19 drive the inner suction cup to rotate around the axis of the rotating cylinder 201, thereby driving the motor output shaft to rotate and adjust the angle. During this process, the fixed slide tubes 19 drive the mating ring 18 to rotate.

[0035] like Figures 5-7 As shown, the synchronization component 21 includes a sleeve 211, a second fixing ear 212, and a rotating plate 213; the sleeve 211 is rotatably sleeved on the outer wall of the cavity tube 15, and a plurality of evenly distributed second fixing ears 212 are fixedly connected to the outer wall of the sleeve 211, and the second fixing ears 212 correspond one-to-one with the slider 7, and the rotating plate 213 is rotatably connected between the second fixing ear 212 and the corresponding slider 7.

[0036] Specifically, when the first threaded rod 45 drives the corresponding slider 7 to slide up and down along the inner wall of the fixed frame 6, the slider 7 drives the sleeve 211 to rotate through the rotating plate 213, thereby driving all the second fixed ears 212 to rotate around the axis of the sleeve 211. Then, the remaining second fixed ears 212 drive the corresponding slider 7 to slide, so that multiple sliders 7 move closer or further away from each other synchronously.

[0037] like Figure 2 , Figures 5-7 As shown, the micro-movement assembly 13 includes a connecting frame 131, a sliding groove 132, a first fixing plate 133, and an electric push rod 134. The connecting frame 131 is rotatably connected to the outer wall of the mating ring 18. An electric push rod 134 is fixedly connected to one of the fixing frames 6. The driving end of the electric push rod 134 is fixedly connected to the connecting frame 131. The connecting frame 131 has multiple sliding grooves 132, and each sliding groove 132 corresponds to a movable sliding tube 9. The movable sliding tube 9 passes through the corresponding sliding groove 132. Two first fixing plates 133 are fixedly sleeved between multiple movable sliding tubes 9 on the same slider 7. The two first fixing plates 133 are located on both sides of the connecting frame 131. A first spring (not marked in the figure) is provided between the connecting frame 131 and the first fixing plate 133 away from the back cover 14. The first spring is sleeved on the outer wall of the movable sliding tube 9.

[0038] Specifically, the drive end of the electric push rod 134 is controlled to extend and retract. The drive end of the electric push rod 134 drives the connecting frame 131 to move closer to or away from the end face of the motor output shaft. Then, the connecting frame 131 drives the sliding tube 9 to move closer to or away from the end face of the motor output shaft through the first fixed plate 133, thereby driving the outer suction cup to move closer to or away from the end face of the motor output shaft. Simultaneously, the connecting frame 131 drives the mating ring 18 to move closer to or away from the end face of the motor output shaft. Then, the mating ring 18 drives the fixed sliding tube 19 to move closer to or away from the end face of the motor output shaft through the second fixed plate 23, thereby driving the inner suction cup to move closer to or away from the end face of the motor output shaft. When the outer suction cup 10 is attached to the end face of the motor output shaft, the outer suction cup 10 can drive the movable slide tube 9 to move closer to the rear cover 14. Then the movable slide tube 9 drives the first fixing plate 133 to compress the first spring, thereby effectively preventing the outer suction cup 10 from directly and rigidly colliding with the end face of the motor output shaft through the first spring.

[0039] The working principle of this invention is as follows: The motor output shaft with the keyway to be milled is placed on the V-shaped plate 3, and the top cone structure 22 is controlled to press against the reserved hole at one end of the motor output shaft. During this process, the top cone structure 22 pushes the motor output shaft to slide along the V-shaped plate 3 until the top cone 16 presses against the reserved hole at the other end of the motor output shaft. Then, the distance between the outer suction cup 10 and the shaft end face of the motor output shaft is adjusted by the micro-movement component 13 until the outer suction cup 10 adheres to and adsorbs the end face of the motor output shaft, thereby restricting the circumferential rotation of the motor output shaft and fixing and clamping the motor output shaft. After that, the keyway is opened on the side wall of the motor output shaft near the top cone structure 22 using the milling machine 1. When it is necessary to remove the motor output shaft, the outer suction cup 10 is powered off to stop adsorption, and then the top cone structure 22 is moved away from the motor output shaft, and then it can be quickly removed. When dealing with motor output shafts of different diameters, the V-shaped plate 3 and one of the sliders 7 are raised and lowered synchronously by the diameter adjustment component 4. The slider 7 and the V-shaped plate 3 are raised and lowered by the same distance. Multiple sliders 7 move closer or further away from each other synchronously by the synchronization component 21. Then, the sliders 7 drive the corresponding multiple moving tubes 9 to move closer or further away from each other, thereby controlling the outer suction cups 10 on the multiple sliders 7 to move closer or further away from each other, so as to adapt to motor output shafts of different diameters. To address the need for multiple circumferentially evenly distributed keyways on the outer surface of the motor output shaft, when controlling the rotation of the motor output shaft, the micro-movement component 13 first controls the moving slide tube 9 and the mating ring 18 to move closer to the rear cover 14. The mating ring 18, through the synchronization component 21, drives the fixed slide tube 19 to move closer to the rear cover 14 until both the outer suction cup 10 and the inner suction cup are detached from the end face of the motor output shaft. Then, the diameter adjustment component 4 controls the V-shaped plate 3 to descend and detach from the motor output shaft. The diameter adjustment component 4 synchronously drives multiple sliders 7 to move away from each other. The radius of the circle formed by the outer suction cups 10 on the multiple sliders 7 is larger than the radius of the end face of the motor output shaft, thereby avoiding interference between the outer suction cup 10 and the outer surface of the motor output shaft during the rotation of the motor output shaft driven by the inner suction cup. Then, the micro-moving component 13 drives the mating ring 18 to move away from the rear cover 14. The mating ring 18 drives the inner suction cup to adhere to the end face of the motor output shaft. Then, the inner suction cup is energized and adsorbed. After that, the diameter adjustment component 4 is controlled to drive the V-shaped plate 3 to rise, the rotating component 20 to rotate, and the multiple outer suction cups 10 to gradually approach each other. Then, the rotating component 20 drives the multiple fixed slide tubes 19 to rotate around the axis of the motor output shaft until they reach the next keyway to be opened (at this time, the radius of the circle formed by the outer suction cups 10 on the multiple sliders 7 is still larger than the radius of the end face of the motor output shaft). Then, the inner suction cup is de-energized. Then, the outer suction cup 10 and the inner suction cup are controlled to move away from the end face of the motor output shaft by the micro-movement component 13. Then, the diameter adjustment component 4 is controlled to continue to drive the V-shaped plate 3 to rise. The diameter adjustment component 4 simultaneously drives multiple outer suction cups 10 to move closer to each other until the V-shaped plate 3 is attached to the outer wall of the motor output shaft (at this time, the radius of the circle formed by the outer suction cups 10 on multiple sliders 7 is still smaller than the radius of the end face of the motor output shaft). Then, the outer suction cup 10 is controlled to attach to the end face of the motor output shaft by the micro-movement component 13. Then, the outer suction cup 10 is energized to adsorb and fix the end face of the motor output shaft. Then, the keyway is milled on the motor output shaft by the milling machine 1.

[0040] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve any improvement to the software and methods.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A keyway milling device for an output shaft of a motor, comprising a milling machine (1), a mounting frame (2), a V-shaped plate (3), a fixed cylinder (5), and a top cone structure (22), wherein the milling machine (1) is fixedly provided with the mounting frame (2), the mounting frame (2) is provided with the V-shaped plate (3), and the top cone structure (22) is connected to one side of the upper end of the mounting frame (2). Its features are, The outer wall of the fixed cylinder (5) is fixedly connected with multiple evenly distributed fixed frames (6). Each fixed frame (6) is slidably connected with a slider (7). One of the fixed frames (6) is fixedly connected to the placement frame (2), and an adjustment component (4) is provided between the slider (7) in the fixed frame (6) and the V-shaped plate (3). The slider (7) and the V-shaped plate (3) are controlled to rise and fall synchronously by the adjustment component (4). The remaining fixed frames (6) are all fixedly provided with guide rods (8) that are slidably connected to the slider (7). A synchronization component (21) is provided between the multiple sliders (7). Each slider (7) is slidably connected with multiple movable tubes (9), and the other end of each movable tube (9) is fixedly connected with an outer suction cup (10). One end of the fixed cylinder (5) is fixedly connected to a rear cover (14), and a cavity tube (15) is fixedly installed on the rear cover (14). The other end of the cavity tube (15) passes through the fixed cylinder (5) and is fixedly connected to a mating top cone (16).

2. The keyway milling device for the motor output shaft according to claim 1, characterized in that, A micro-movement assembly (13) is provided between multiple outer suction cups (10). A rotating assembly (20) is rotatably sleeved on the outer wall of the cavity tube (15). The rotating assembly (20) is meshed with the diameter adjustment assembly (4). Multiple uniformly distributed fixed sliding tubes (19) are slidably connected on the rotating assembly (20). An inner suction cup is fixedly connected to one end of each fixed sliding tube (19). A mating ring (18) is slidably connected between multiple fixed sliding tubes (19). Two second fixing plates (23) located on both sides of the mating ring (18) are fixedly connected to each fixed sliding tube (19). The mating ring (18) is mated with the micro-movement assembly (13). A second spring is sleeved on each fixed sliding tube (19). The second spring is located between the mating ring (18) and the second fixing plate (23) away from the rear cover (14).

3. The keyway milling device for the motor output shaft according to claim 2, characterized in that, The cavity tube (15) is connected to an external air pipe at one end near the rear cover (14). The cavity tube (15) has a chamfer at one end near the mating top cone (16). Multiple circumferentially evenly distributed air jet holes (17) are provided at the chamfer position. Multiple movable slide tubes (9) on the same slider (7) are fixedly connected to a support plate (11). Each support plate (11) can be detachably connected to a brush (12).

4. The keyway milling device for the motor output shaft according to claim 3, characterized in that, When the outer suction cup (10) is not in contact with the end face of the output shaft of the motor to be processed, the right end of the brush (12) protrudes from the adsorption end face of the outer suction cup (10), and the left end of the brush (12) extends to the side of the outer suction cup 10 away from the adsorption end face.

5. The keyway milling device for the motor output shaft according to claim 2, characterized in that, The diameter adjustment assembly (4) includes a lifting groove (41), a connecting plate (42), a support plate (43), a worm (44), a first threaded rod (45), a first worm wheel (46), a second worm wheel (47), a second threaded rod (48), and a motor (49). The upper surface of the placement rack (2) is provided with a lifting groove (41), and a connecting plate (42) is slidably connected in the lifting groove (41). The connecting plate (42) is fixedly connected to the V-shaped plate (3). Two support plates (43) are also fixedly connected to the placement rack (2). A worm gear (44) is rotatably connected between the two support plates (43). One end of the worm gear (44) passes through the support plate (43) and is fixedly connected to a motor (49). A first threaded rod (45) and a second threaded rod (48) are also rotatably connected to the placement rack (2). The rod (48) is threadedly connected to the connecting plate (42). The outer wall of the second threaded rod (48) is fixedly sleeved with a second worm wheel (47), and the second worm wheel (47) is meshed with the worm (44). The outer wall of the first threaded rod (45) is fixedly sleeved with a first worm wheel (46), and the first worm wheel (46) is meshed with the worm (44). The upper end of the first threaded rod (45) passes through the fixed frame (6) and is located inside the fixed cylinder (5). The first threaded rod (45) is threadedly connected to the slider (7) inside the fixed frame (6).

6. The keyway milling device for the motor output shaft according to claim 2, characterized in that, The rotating assembly (20) includes a rotating cylinder (201), a first gear (202), a first fixed lug (203), and a second gear (204); The upper end of the first threaded rod (45) is fixedly connected to the second gear (204). One end of the fixed cylinder (5) is rotatably connected to the rotating cylinder (201), and the inner wall of the rotating cylinder (201) is rotatably connected to the cavity tube (15). One end of the rotating cylinder (201) is fixedly connected to a plurality of circumferentially evenly distributed first fixed ears (203). Each first fixed ear (203) is slidably connected to a fixed sliding tube (19). The other end of the rotating cylinder (201) is fixedly connected to the first gear (202), and the first gear (202) meshes with the second gear (204).

7. The keyway milling device for the motor output shaft according to claim 2, characterized in that, The synchronization component (21) includes a sleeve (211), a second fixing lug (212), and a rotating plate (213). A sleeve (211) is rotatably sleeved on the outer wall of the cavity tube (15). A plurality of evenly distributed second fixing ears (212) are fixedly connected to the outer wall of the sleeve (211), and the second fixing ears (212) correspond one-to-one with the slider (7). A rotating plate (213) is rotatably connected between the second fixing ears (212) and the corresponding slider (7).

8. The keyway milling device for the motor output shaft according to claim 2, characterized in that, The micro-movement assembly (13) includes a connecting frame (131), a slide (132), a first fixing plate (133), and an electric push rod (134). A connecting frame (131) is rotatably connected to the outer wall of the mating ring (18). An electric push rod (134) is fixedly connected to one of the fixed frames (6). The driving end of the electric push rod (134) is fixedly connected to the connecting frame (131). The connecting frame (131) has multiple sliding grooves (132), and the sliding grooves (132) correspond one-to-one with the moving sliding tubes (9). The moving sliding tubes (9) pass through the corresponding sliding grooves (132). Two first fixing plates (133) are fixedly sleeved between the multiple moving sliding tubes (9) on the same slider (7). The two first fixing plates (133) are located on both sides of the connecting frame (131), and a first spring is provided between the connecting frame (131) and the first fixing plate (133) away from the back cover (14). The first spring is sleeved on the outer wall of the moving sliding tube (9).

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