An external cylindrical turning device for machining motor top cover

Abstract

The present invention discloses an external cylindrical turning device for processing motor top covers, which belongs to the technical field of motor top cover processing. The external cylindrical turning device for processing motor top covers comprises a fixed plate and a turning tool, a rotating mechanism is installed on one side of the fixed plate, an adjusting mechanism is installed on one side of the rotating mechanism, the adjusting mechanism comprises a connecting plate, a fan-shaped connecting plate is rotated on the side of the connecting plate close to the rotating mechanism, and three fixed columns are slid inside the fan-shaped connecting plate, the three fixed columns are fixed with trapezoidal blocks on the side away from the rotating mechanism, and the three trapezoidal blocks are rotatably connected to a rotating shaft. By designing a rotating mechanism and an adjusting mechanism, the present invention can simultaneously turn multiple motor top covers when the external cylindrical turning device is in use, and during the turning process of the motor top cover, the cutting force can be promptly responded to to avoid deformation of the motor end cover caused by excessive cutting force, thereby improving the quality of the external cylindrical turning of the motor top cover.

Description

Technical Field

[0001] The invention belongs to the technical field of motor top cover processing, and particularly relates to an external cylindrical turning device for processing the motor top cover. Background Art

[0002] The external machining of motor covers is a crucial step in the motor manufacturing process, ensuring a smooth exterior surface, precise dimensions, and accurate shape. As a protective component, the cover must not only provide a good seal but also withstand certain mechanical loads. Therefore, the precision and surface quality of its external machining directly impact the motor's performance and service life. By selecting appropriate machining processes and equipment, the dimensional accuracy and surface quality of the motor cover after external machining can be guaranteed to meet design requirements, thereby improving the motor's overall performance and reliability.

[0003] The outer circle of the motor top cover not only has a protective function but also needs to maintain a certain aesthetic appearance. Therefore, it needs to be turned before assembly. The existing outer circle turning device for motor top cover processing usually only processes one of the outer circles when in use, resulting in slow processing speed and low efficiency. In addition, during the traditional outer circle turning process, due to the action of cutting force, the workpiece is prone to elastic deformation, resulting in outer circle size deviation, roundness error or surface vibration after processing, thereby reducing the production quality of the motor outer circle. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an external cylindrical turning device for machining a motor top cover.

[0005] The technical solution adopted to solve the above technical problems is: an external cylindrical turning device for machining a motor top cover, comprising a fixed plate and a turning tool, a rotating mechanism installed on one side of the fixed plate, and an adjusting mechanism installed on one side of the rotating mechanism for reducing hard collision between the motor top cover and the turning tool during the turning process;

[0006] The adjusting mechanism includes a connecting disk, a fan-shaped connecting plate that rotates on the side of the connecting disk close to the rotating mechanism, and three fixed columns sliding inside the fan-shaped connecting plate, trapezoidal blocks are fixed on the side of the three fixed columns away from the rotating mechanism, and the three trapezoidal blocks are rotatably connected to the rotating shaft, and springs are sliding on the outer walls of the three rotating shafts, and the rotation of the trapezoidal blocks drives the corresponding trapezoidal blocks on the fixed columns to slide, thereby squeezing the corresponding springs to adapt to the distance between the motor top cover and the side of the turning tool.

[0007] A main body is fixed on the side of the fixed plate away from the rotating mechanism, and an operating table for processing is provided on the top of the main body. A moving table for driving the turning tool is installed on the side of the top of the main body opposite to the fixed plate.

[0008] Furthermore, a rotating mechanism for driving the motor end cover to rotate and turn is installed inside the main body, and the rotating mechanism includes a sleeve, and a support plate for supporting dispersion is fixed on the side of the sleeve away from the main body, and the three branches of the support plate are installed on the side away from the main body, and the center ends of the three second gears are engaged with the first gear. The three second gears are driven by the rotation of the first gear, and then the corresponding motor top cover is driven to rotate. A first drive shaft passing through the sleeve is fixed on the side of the first gear close to the support plate, and a first motor is fixed on the side of the first drive shaft away from the first gear, and the first gear on the first drive shaft is driven to rotate by the first motor.

[0009] Through the above technical solution, when in use, after the motor top cover is installed, the rotating mechanism can be used to drive the device to rotate, thereby driving the motor top cover to rotate, and then the turning tool is aligned using the moving platform on the main body to determine the turning position, and then the motor top cover can be turned by the turning tool. Specifically, the first motor is started to drive the first gear on the first drive shaft to rotate, and then the three second gears are driven to rotate, and then the components connected to the second gears all keep rotating to ensure the turning process.

[0010] Furthermore, the rotating mechanism includes a third gear, a turntable is rotatably connected to the surface of the fixed plate, and a plurality of teeth are fixedly connected to the outer wall of the turntable. The rotation of the third gear drives the turntable surrounded by the plurality of teeth, and then drives the plurality of motor top covers to rotate and exchange for turning. The third gear is fixed with a second drive shaft on the side close to the fixed plate, and a second motor located inside the main body is fixed to the other end of the second drive shaft. The third gear on the second drive shaft is driven to rotate by the second motor, and the sleeve is fixed to the turntable on the side close to the fixed plate.

[0011] Through the above technical solution, when multiple motor top covers are processed, after the turning process of one of the motor top covers is completed, the rotating mechanism can be used for conversion to ensure that each motor top cover can be turned, thereby improving the turning speed of the turning device. Specifically, the second motor is started to drive the third gear on the second drive shaft to rotate. When multiple teeth are engaged with the third gear, the turntable will be driven to rotate. Since one end of the sleeve is fixed to the turntable and the other end is fixed to the support plate, the components connected to it will be driven to rotate during the rotation of the turntable, thereby completing the conversion of the motor top cover.

[0012] Furthermore, the three rotating shafts are fixed with two concave limit plates with a rotational offset on one side away from the trapezoidal block, and a convex limit plate is sliding between the corresponding two concave limit plates, and one of the corresponding concave limit plates is fixedly connected to the corresponding second gear on the side away from the rotating shaft. The movement of the rotating shaft will drive the concave limit plate and the convex limit plate to be offset, thereby ensuring rotation while offsetting. The surface of the connecting plate is provided with a trapezoidal groove for the sliding of the corresponding trapezoidal block, and the inside of the three trapezoidal grooves are provided with a sliding groove for the sliding of the corresponding rotating shaft. The surface of the fan plate of the fan connecting plate is provided with an inclined groove for the sliding of the corresponding fixed column. A first hydraulic cylinder is installed between one of the fan plates of the fan connecting plate and the connecting plate. The first hydraulic cylinder pushes the fan connecting plate to rotate, driving the fixed column to slide on the inclined groove, and then driving the trapezoidal block on the fixed column to slide along the inside and outside of the trapezoidal groove, so that the rotating shaft slides.

[0013] Through the above technical solution, in the process of processing multiple motor top covers, it is first necessary to select according to the specifications of the motor top cover, determine the size of the electric top cover, and then determine the distance between the outer circle of the motor top cover and the turning tool to ensure the normal progress of the turning process. At the same time, during the turning process, when the turning force is too large, it can be automatically adjusted to avoid deformation of the motor top cover caused by excessive turning force, thereby improving the turning quality of the motor top cover. Specifically, the first hydraulic cylinder is started, and its piston end will drive the fan-shaped connecting plate to rotate, so that the fixed column slides along the inclined groove, and then the fixed column will slide in and out on the inclined groove. At the same time, the trapezoidal block will slide on the trapezoidal groove, thereby driving the rotating shaft on the slide groove. It will slide and pull or compress the spring. At this time, the size of the motor cover is determined. What you need to understand is that when the rotating shaft moves, it is necessary to ensure that the rotating shaft keeps rotating, thereby driving the two concave limit plates and the convex limit plates to slide adaptively. Under the fibers of the convex strips, it will not fall off while keeping rotating, and then, under the rotation of the second gear, it is ensured to rotate while offset. In addition, when the turning force is too large, the turning tool will squeeze the outer circle of the motor cover, thereby pulling the compression spring, thereby effectively avoiding a hard collision between the motor cover and the turning tool. What you need to understand is that when there is a pressure difference in the hydraulic system of the first hydraulic cylinder, the hydraulic rod naturally expands and contracts under the action of external conditions, rather than being actively controlled by the system.

[0014] Furthermore, the three rotating shafts are away from the corresponding springs and are equipped with a lining mechanism that supports the inner wall of the motor top cover. The lining mechanism includes multiple first connecting rods and second connecting rods. The other ends of multiple first connecting rods and second connecting rods are rotatably provided with lining plates. The corresponding first connecting rods are driven to rotate through the moving supports of multiple second connecting rods, thereby driving the corresponding lining plates to support the inner walls of the motor top covers of different specifications. The three rotating shafts are fixed with cylindrical sleeves on one side away from the corresponding springs. Second hydraulic cylinders are installed inside the three cylindrical sleeves, and connecting sleeves are installed on the piston ends of the three second hydraulic cylinders. The corresponding second connecting rods are driven to move by the extension and retraction of the connecting sleeves on the piston ends of the three second hydraulic cylinders. The other ends of multiple first connecting rods are rotatably connected to the outer walls of the corresponding cylindrical sleeves.

[0015] Through the above technical solution, when the turning process of the outer ring of the motor top cover begins, the lining mechanism is used to support the inner wall of the motor top cover to ensure the stability of the motor top cover during the turning process. Specifically, the three second hydraulic cylinders are started, and their piston ends respectively drive the second connecting rods on the corresponding connecting sleeves for motion support, and then drive the multiple first connecting rods and cylindrical sleeves on the corresponding inner lining plates to maintain support, and then the multiple inner lining plates will support the inside of the motor top cover to adapt to the sizes of different motor top covers.

[0016] The beneficial effects of the present invention are as follows: (1) The present invention can simultaneously turn multiple motor top covers when the external cylindrical turning device is used by designing a rotating mechanism, a rotating mechanism, an adjusting mechanism and a lining mechanism, and can timely respond to the cutting force during the turning process of the motor top cover to avoid deformation of the motor end cover caused by excessive cutting force, thereby improving the external cylindrical turning quality of the motor top cover; (2) The present invention can quickly support multiple motor top covers and then perform rotational turning when the motor top cover is turned by designing a rotating mechanism, a rotating mechanism and a lining mechanism, and can also rotate and replace the motor top covers one by one while ensuring the turning quality, thereby improving the turning speed; (3) The present invention can adjust the position of the motor top cover by designing an adjusting mechanism, so that the distance between the motor top cover and the tool can be determined according to the size of the motor top cover during the turning process, thereby ensuring the turning thickness, and reducing the hard resistance and damage when the turning force of the device is too large, thereby improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention from a first perspective;

[0018] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0019] Figure 3 It is a front view of the present invention;

[0020] Figure 4 is a cross-sectional view of the present invention;

[0021] Figure 5 yes Figure 4 A partial enlarged view of point A in the middle;

[0022] Figure 6 It is a structural schematic diagram of the rotating mechanism and the adjusting mechanism of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the rotating mechanism and the adjusting mechanism of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the first viewing angle adjustment mechanism and the lining mechanism of the present invention;

[0025] Figure 9 is a structural schematic diagram of the second viewing angle adjustment mechanism and the lining mechanism of the present invention;

[0026] Figure 10 yes Figure 9 A partial enlarged view of point B in the middle.

[0027] Reference numerals: 11, main body; 12, operating table; 13, moving table; 14, turning tool; 15, fixed plate; 2, rotating mechanism; 21, first motor; 22, first drive shaft; 23, first gear; 24, support plate; 25, second gear; 26, sleeve; 3, rotating mechanism; 31, second motor; 32, second drive shaft; 33, third gear; 34, turntable; 35, gear; 4, adjusting mechanism; 4 1. Connecting plate; 42. First hydraulic cylinder; 43. Fan-shaped connecting plate; 44. Inclined groove; 45. Slide groove; 46. Fixed column; 47. Trapezoidal groove; 48. Trapezoidal block; 49. Concave limit plate; 410. Convex limit plate; 411. Rotating shaft; 412. Spring; 5. Lining mechanism; 51. Cylindrical sleeve; 52. Second hydraulic cylinder; 53. First connecting rod; 54. Second connecting rod; 55. Connecting sleeve; 56. Lining plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present 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 only used to explain the present invention and are not intended to limit the present invention.

[0029] like Figures 1-10As shown, an external cylindrical turning device for machining a motor top cover of the present embodiment includes a fixed plate 15 and a turning tool 14. A main body 11 is fixed to the side of the fixed plate 15 away from the rotating mechanism 3, and an operating table 12 for machining is provided on the top of the main body 11. A movable table 13 for driving the turning tool 14 to move is installed on the side of the top of the main body 11 opposite to the fixed plate 15. A rotating mechanism 2 for driving the motor end cover to rotate and turn is installed inside the main body 11. The rotating mechanism 2 includes a sleeve 26. A support plate 24 for supporting dispersion is fixed to the side of the sleeve 26 away from the main body 11. A second gear 25 is installed on the side of the three branches of the support plate 24 away from the main body 11, and the center ends of the three second gears 25 are meshed with a first gear 23. The rotation of the first gear 23 drives the three second gears 25, and then drives the corresponding motor top cover to rotate. A first drive shaft 22 passing through the sleeve 26 is fixed to a gear 23 near the support plate 24, and a first motor 21 is fixed to the first drive shaft 22 away from the first gear 23. The first motor 21 drives the first gear 23 on the first drive shaft 22 to rotate. During use, after the motor cover is placed, the rotating mechanism 2 can be used to drive the device to rotate, thereby driving the motor cover to rotate. Subsequently, the moving platform 13 on the main body 11 is used to align the turning tool 14 to determine the turning position, so that the motor cover can be turned by the turning tool 14. Specifically, the first motor 21 is started to drive the first gear 23 on the first drive shaft 22 to rotate, and then the three second gears 25 are driven to rotate, so that the components connected to the second gears 25 all keep rotating to ensure the turning process.

[0030] like Figure 7As shown, a rotating mechanism 3 is installed on one side of the fixed plate 15, and the rotating mechanism 3 includes a third gear 33. A turntable 34 is rotatably connected to the surface of the fixed plate 15, and a plurality of teeth 35 are fixedly connected to the outer wall of the turntable 34. The turntable 34 surrounded by the plurality of teeth 35 is driven by the rotation of the third gear 33, and then the plurality of motor top covers are driven to rotate and exchange for turning. A second driving shaft 32 is fixed to the side of the third gear 33 close to the fixed plate 15, and a second motor 31 located inside the main body 11 is fixed to the other end of the second driving shaft 32. The third gear 33 on the second driving shaft 32 is driven to rotate by the second motor 31, and the sleeve 26 is close to the side of the fixed plate 15 and the turntable 3 4 is fixed. When multiple motor top covers are processed, after the turning process of one of the motor top covers is completed, the rotating mechanism 3 can be used for conversion to ensure that each motor top cover can be turned, thereby improving the turning speed of the turning device. Specifically, the second motor 31 is started to drive the third gear 33 on the second drive shaft 32 to rotate. When the multiple teeth 35 are engaged with the third gear 33, the turntable 34 is driven to rotate. Since one end of the sleeve 26 is fixed to the turntable 34 and the other end is fixed to the support plate 24, the components connected to it will be driven to rotate during the rotation of the turntable 34, thereby completing the conversion of the motor top cover.

[0031] like Figure 7-Figure 8 and Figure 10As shown, an adjustment mechanism 4 is installed on one side of the rotating mechanism 3 to reduce the hard collision between the motor top cover and the turning tool 14 during the turning process. The adjustment mechanism 4 includes a connecting disk 41. The connecting disk 41 is rotated with a fan-shaped connecting plate 43 on the side close to the rotating mechanism 3, and three fixed columns 46 slide inside the fan-shaped connecting plate 43. The three fixed columns 46 are fixed with a trapezoidal block 48 on the side away from the rotating mechanism 3, and the three trapezoidal blocks 48 are all rotatably connected to the rotating shaft 411. The outer walls of the three rotating shafts 411 are all slid with springs 412. The rotation of the trapezoidal block 48 drives the corresponding trapezoidal block 48 on the fixed column 46 to slide, thereby squeezing the corresponding spring 412 to adapt to the distance between the motor top cover and the side of the turning tool 14. The three rotating shafts 411 are away from the trapezoidal block 48. Two concave limit plates 49 are fixed with rotation offset, and a convex limit plate 410 slides between the corresponding two concave limit plates 49, and one of the corresponding concave limit plates 49 is fixedly connected to the corresponding second gear 25 away from the rotating shaft 411. The movement of the rotating shaft 411 will drive the concave limit plates 49 and the convex limit plates 410 to deviate, thereby ensuring rotation while deviating. The surface of the connecting disk 41 is provided with a trapezoidal groove 47 for the sliding of the corresponding trapezoidal block 48, and the inside of the three trapezoidal grooves 47 are provided with a sliding groove 45 for the sliding of the corresponding rotating shaft 411. The surface of the fan plate of the fan-shaped connecting plate 43 is provided with an inclined groove 44 for the sliding of the corresponding fixed column 46, and one of the fan plates of the fan-shaped connecting plate 43 is installed with a The first hydraulic cylinder 42 pushes the fan-shaped connecting plate 43 to rotate through the first hydraulic cylinder 42, driving the fixed column 46 to slide on the inclined groove 44, and then driving the trapezoidal block 48 on the fixed column 46 to slide in and out along the trapezoidal groove 47, so that the rotating shaft 411 slides. In the process of processing multiple motor top covers, it is first necessary to select according to the specifications of the motor top cover, determine the size of the electric top cover, and then determine the distance between the outer circle of the motor top cover and the turning tool 14 to ensure the normal progress of the turning process. At the same time, during the turning process, when the turning force is too large, it can be automatically adjusted to avoid deformation of the motor top cover caused by excessive turning force, thereby improving the turning quality of the motor top cover. Specifically, start the first hydraulic cylinder 42, and its piston end will drive the fan-shaped connecting plate 43 to rotate , so that the fixed column 46 slides along the inclined groove 44, and then the fixed column 46 will slide in and out on the inclined groove 44. At the same time, the trapezoidal block 48 will slide on the trapezoidal groove 47, thereby driving the rotating shaft 411 to slide on the slide groove 45, and will pull or compress the spring 412. At this time, the size of the motor top cover is determined. It should be understood that when the rotating shaft 411 moves, it is ensured that the rotating shaft 411 keeps rotating, thereby driving the two concave limit plates 49 and the convex limit plates 410 to slide adaptively. Under the fiber of the convex strip, it will not fall off while keeping rotating, and then ensure that it rotates while deviating under the rotation of the second gear 25. In addition, when the turning force is too large, the turning tool 14 will squeeze the outer circle of the motor top cover.This in turn pulls the compression spring 412, thereby effectively avoiding a hard collision between the motor cover and the turning tool 14. It should be understood that when there is a pressure difference in the hydraulic system of the first hydraulic cylinder 42, the hydraulic rod naturally expands and contracts under the influence of external conditions, rather than being actively controlled by the system.

[0032] like Figure 9-10 As shown, the three rotating shafts 411 are away from the corresponding springs 412 and are all equipped with a lining mechanism 5 that supports the inner wall of the motor cover. The lining mechanism 5 includes a plurality of first connecting rods 53 and a second connecting rod 54. The other ends of the plurality of first connecting rods 53 and the second connecting rod 54 are all rotated with an inner lining plate 56. The corresponding first connecting rods 53 are driven to rotate by the moving support of the plurality of second connecting rods 54, and then the corresponding inner lining plates 56 are driven to support the inner walls of the motor cover of different specifications. The three rotating shafts 411 are all fixed with a cylindrical sleeve 51 on one side away from the corresponding spring 412. The three cylindrical sleeves 51 are all equipped with a second hydraulic cylinder 52, and the piston ends of the three second hydraulic cylinders 52 are all equipped with a connecting sleeve 55. The connecting sleeve 55 on the piston end 52 is extended and retracted, thereby driving the corresponding second connecting rod 54 to move. The other ends of the multiple first connecting rods 53 are rotatably connected to the outer wall of the corresponding cylindrical sleeve 51. When the turning process of the outer ring of the motor top cover is started, the lining mechanism 5 is used to support the inner wall of the motor top cover to ensure the stability of the motor top cover during the turning process. Specifically, the three second hydraulic cylinders 52 are started, and their piston ends respectively drive the corresponding second connecting rods 54 on the connecting sleeve 55 for movement support, thereby driving the multiple first connecting rods 53 on the corresponding inner lining plate 56 to maintain support with the cylindrical sleeve 51, and then the multiple inner lining plates 56 will support the inside of the motor top cover to adapt to the sizes of different motor top covers.

[0033] The working principle of this embodiment is as follows. When in use, the three motor top covers are placed in the turning device in turn, and the second hydraulic cylinder 52 is started in turn. The piston ends thereof respectively drive the second connecting rods 54 on the corresponding connecting sleeves 55 to move and support, thereby driving the multiple first connecting rods 53 on the corresponding inner lining plate 56 to maintain support with the cylindrical sleeve 51, and then the multiple inner lining plates 56 will support the inside of the motor top cover. Then the first hydraulic cylinder 42 is started, and its piston end will drive the fan-shaped connecting plate 43 to rotate, so that the fixed column 46 slides along the inclined groove 44, and then the fixed column 46 will slide in and out on the inclined groove 44. At the same time, the trapezoidal block 48 will slide on the trapezoidal groove 47, thereby driving the rotating shaft 411 to slide on the slide groove 45, and will pull or compress the spring 412, thereby driving the two concave limit plates 49 and the convex limit plates 410 to slide adaptively. At this time, the size of the motor top cover is determined, and then the motor top is determined. The outer circle of the cover is at a distance from the turning tool 14, and the first motor 21 is started to drive the first gear 23 on the first driving shaft 22 to rotate, and then the three second gears 25 are driven to rotate, and then the components connected to the second gear 25 are kept rotating, so that the two concave limit plates 49 and the convex limit plates 410 connected to the surface of the second gear 25 rotate. At the same time, the rotating shaft 411 connected to the concave limit plates 49 will drive the motor top cover on the corresponding inner lining plate 56 to rotate to realize turning processing. When the turning force is too large, the turning tool 14 will squeeze the outer circle of the motor top cover, and then pull the compression spring 412. As the turning processing of one of the motor top covers is completed, the second motor 31 is started to drive the third gear 33 on the second driving shaft 32 to rotate. When multiple teeth 35 are engaged with the third gear 33, the turntable 34 will be driven to rotate. Since one end of the sleeve 26 is fixed to the turntable 34, the conversion of the motor top cover is completed.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An external cylindrical turning device for machining a motor top cover, comprising a fixing plate (15) and a turning tool (14), characterized in that: A rotating mechanism (3) is mounted on one side of the fixed plate (15), a main body (11) is fixed on a side of the fixed plate (15) away from the rotating mechanism (3), and an adjusting mechanism (4) is mounted on one side of the rotating mechanism (3) for reducing hard collision between the motor top cover and the turning tool (14) during the turning process; A rotating mechanism (2) for driving the motor end cover to rotate and turn is installed inside the main body (11), and the rotating mechanism (2) includes a sleeve (26), and a support plate (24) for supporting dispersion is fixed on the side of the sleeve (26) away from the main body (11), and two second gears (25) are installed on the three branches of the support plate (24) away from the main body (11), and the center ends of the three second gears (25) are meshed with the first gear (23), and the three second gears (25) are driven by the rotation of the first gear (23), thereby driving the corresponding motor top cover to rotate; The adjusting mechanism (4) includes a connecting disk (41), a fan-shaped connecting plate (43) is rotatably provided on the side of the connecting disk (41) close to the rotating mechanism (3), and three fixed columns (46) are slidably provided inside the fan-shaped connecting plate (43), and the three fixed columns (46) are all fixed with a trapezoidal block (48) on the side away from the rotating mechanism (3), and the three trapezoidal blocks (48) are all rotatably connected to the rotating shaft (411), and the outer walls of the three rotating shafts (411) are all slidably provided with a spring (412), and the corresponding trapezoidal block (48) on the fixed column (46) is driven to slide by the rotation of the trapezoidal block (48), thereby squeezing the corresponding spring (412) to adapt to the distance between the motor top cover and the side of the turning tool (14); Two inner concave limiting plates (49) are fixed on the side of the three rotating shafts (411) away from the trapezoidal block (48), and an outer convex limiting plate (410) is slidably provided between the two corresponding inner concave limiting plates (49). One of the corresponding inner concave limiting plates (49) is fixedly connected to the corresponding second gear (25) on the side away from the rotating shaft (411). The movement of the rotating shaft (411) drives the inner concave limiting plate (49) and the outer convex limiting plate (410) to deviate, thereby ensuring rotation while deviating. The surface of the connecting plate (41) is provided with a trapezoidal groove (47) for providing a corresponding trapezoidal block (48) to slide, and the inside of the three trapezoidal grooves (47) is provided with a sliding groove (45) for providing a corresponding rotating shaft (411) to slide. The surface of the fan plate of the fan-shaped connecting plate (43) is provided with an inclined groove (44) for providing a corresponding fixed column (46) to slide. A first hydraulic cylinder (42) is installed between one of the fan plates of the fan-shaped connecting plate (43) and the connecting plate (41). The fan-shaped connecting plate (43) is pushed by the first hydraulic cylinder (42) to rotate and drive the fixed column (46) to slide on the inclined groove (44), thereby driving the trapezoidal block (48) on the fixed column (46) to slide inside and outside along the trapezoidal groove (47), so that the rotating shaft (411) slides. The three rotating shafts (411) are all installed with a lining mechanism (5) supporting the inner wall of the motor top cover away from the corresponding spring (412), and the lining mechanism (5) includes a plurality of first connecting rods (53) and a second connecting rod (54), and the other ends of the plurality of first connecting rods (53) and the second connecting rods (54) are all rotatably provided with an inner lining plate (56), and the corresponding first connecting rods (53) are driven to rotate by the movable support of the plurality of second connecting rods (54), thereby driving the corresponding inner lining plate (56) to support the inner wall of the motor top cover of different specifications; A cylindrical sleeve (51) is fixed on one side of the three rotating shafts (411) away from the corresponding spring (412), a second hydraulic cylinder (52) is installed inside the three cylindrical sleeves (51), and a connecting sleeve (55) is installed on the piston end of the three second hydraulic cylinders (52). The connecting sleeve (55) on the piston end of the three second hydraulic cylinders (52) is extended and retracted, thereby driving the corresponding second connecting rod (54) to move, and the other ends of the multiple first connecting rods (53) are rotatably connected to the outer wall of the corresponding cylindrical sleeve (51).

2. The external cylindrical turning device for machining the motor top cover according to claim 1, characterized in that: An operating table (12) for machining is provided on the top of the main body (11), and a movable table (13) for driving a turning tool (14) is installed on the side of the top of the main body (11) opposite to the fixed plate (15).

3. The external cylindrical turning device for machining the motor top cover according to claim 1, characterized in that: A first drive shaft (22) passing through a sleeve (26) is fixed to the side of the first gear (23) close to the support plate (24), and a first motor (21) is fixed to the side of the first drive shaft (22) away from the first gear (23). The first motor (21) drives the first gear (23) on the first drive shaft (22) to rotate.

4. The external cylindrical turning device for machining the motor top cover according to claim 1, characterized in that: The rotating mechanism (3) includes a third gear (33), a rotating disk (34) is rotatably connected to the surface of the fixed plate (15), and a plurality of teeth (35) are fixedly connected to the outer wall of the rotating disk (34). The rotating disk (34) surrounded by the plurality of teeth (35) is driven by the rotation of the third gear (33), thereby driving the plurality of motor top covers to rotate and exchange for turning.

5. The external cylindrical turning device for machining the motor top cover according to claim 4, characterized in that: A second drive shaft (32) is fixed to the side of the third gear (33) close to the fixed plate (15), and a second motor (31) located inside the main body (11) is fixed to the other end of the second drive shaft (32). The third gear (33) on the second drive shaft (32) is driven to rotate by the second motor (31), and the sleeve (26) is fixed to the turntable (34) on the side close to the fixed plate (15).

Images