A rotor assembly and drill and tap machine

Abstract

The application relates to a rotor assembly and a drilling and tapping machine, a plurality of blind holes are formed in the inner wall of a rotor cylinder, a permanent magnet is in contact with the inner wall of the rotor cylinder, the permanent magnet is formed with a first through hole, a screw is inserted into the blind hole through the first through hole, and the screw is in threaded connection with the blind hole. The drilling and tapping machine for machining the rotor cylinder is characterized in that a plurality of positioning blocks are fixedly connected with a positioning seat, the positioning blocks are formed with positioning grooves, a rotating table drives a cutter to rotate in the circumferential direction, a first motor drives the cutter to axially move through a transmission mechanism, a radial movement assembly drives the cutter to move in the radial direction, and a second motor drives the cutter to rotate. The permanent magnet and the rotor cylinder are fixed by means of the blind holes in the rotor cylinder and the screws, the outer surface of the rotor cylinder is not damaged, and the problem of deformation of the outer side of the rotor cylinder is solved; the cutter is located in the rotor cylinder, the rotating cutter can move in the radial direction and the axial direction and rotate in the axial direction relative to the rotor cylinder, and the problem that a general tapping machine cannot tap in the rotor cylinder is solved.

Description

Technical Field

[0001] This invention relates to the field of drilling and tapping machines, and in particular to a rotor assembly and a drilling and tapping machine. Background Technology

[0002] In engineering, the rotor cylinder of an external rotor motor can function as a pulley or sprocket, connecting to a belt or chain to drive the driven pulley. Due to the relatively large size of the rotor cylinder in engineering applications, it is typically fixed to the permanent magnet using welding with additional fasteners. However, welding can easily cause thermal deformation of the rotor cylinder, affecting its performance when connected to a belt as the driving pulley.

[0003] Currently, when fixing permanent magnets inside the rotor cylinder, due to the lack of specialized processing equipment, manual operation is often required, which results in low precision and production efficiency. Summary of the Invention

[0004] The present invention aims to solve the above problems and provides a rotor assembly and a drilling and tapping machine, which solves the problem of deformation on the outer side of the rotor cylinder and the problem that general tapping machines cannot perform radial tapping inside the rotor cylinder.

[0005] A rotor assembly includes: a rotor cylinder, blind holes, a permanent magnet, and a screw. The inner wall of the rotor cylinder has a plurality of blind holes. The permanent magnet is in contact with the inner wall of the rotor cylinder. The permanent magnet has a first through hole. The screw passes through the first through hole and is inserted into the blind hole. The screw is threadedly connected to the blind hole.

[0006] Based on the above technical solution, the screw is made of magnetic material; the rotor cylinder has a positioning step, and the end of the permanent magnet is in contact with the positioning step.

[0007] A drilling and tapping machine for machining rotor cylinders includes: a positioning seat, a rotary table, positioning blocks, a first motor, a second motor, and a radial movement assembly. The positioning seat is fixedly connected to multiple positioning blocks, and the positioning blocks have positioning grooves. The rotary table drives the cutting tool to rotate circumferentially. The first motor drives the cutting tool to move axially through a transmission mechanism. The radial movement assembly drives the cutting tool to move radially. The second motor drives the cutting tool to rotate.

[0008] Based on the above technical solution, it also includes a clamping cylinder and a clamping block. The clamping cylinder drives the clamping block to move radially. The housing of the clamping cylinder is fixedly connected to the positioning seat and evenly arranged circumferentially. The positioning block is fixedly connected to the positioning seat and evenly arranged circumferentially.

[0009] The positioning groove is arc-shaped, and the side of the positioning groove away from the bottom of the groove has a chamfer or rounded corner.

[0010] Based on the above technical solution, it also includes a rotating frame. The transmission mechanism includes a track, a first lead screw, a first movable frame, a slider, and a first lead nut. The track is fixedly connected to the rotating frame, the slider is slidably connected to the track, the first movable frame is fixedly connected to the slider, the first movable frame is fixedly connected to the first lead nut, the first motor drives the first lead screw to rotate, the first lead nut is connected to the first lead screw, the first lead screw is rotatably connected to the rotating frame, and both ends of the rotating table are fixedly connected to the positioning seat and the rotating frame, respectively.

[0011] Based on the above technical solution, the radial movement assembly includes a fixed sleeve, a second lead screw nut, a second moving frame, a sliding cylinder, a third motor, and a second lead screw. The first moving frame is fixedly connected to the fixed sleeve, the second moving frame is fixedly connected to the sliding cylinder, the sliding cylinder is slidably connected to the fixed sleeve, the second lead screw is rotatably connected to the second moving frame, the second lead screw nut is connected to the second lead screw, the second lead screw nut is fixedly connected to the fixed sleeve, and the third motor drives the second lead screw to rotate.

[0012] Based on the above technical solution, it also includes a rotating shaft, a cutting tool, and a connecting shaft. The housing of the second motor is fixedly connected to the second moving frame. The output shaft of the second motor drives the rotating shaft to rotate. The rotating shaft passes through the sliding cylinder and is rotatably connected to the sliding cylinder. The end of the rotating shaft is fixedly connected to the connecting shaft, and the connecting shaft is fixedly connected to the cutting tool.

[0013] It also includes a first driving wheel, a second driving wheel, a second driven wheel, and a first driven wheel. The housing of the third motor is fixedly connected to the second moving frame. The output shaft of the third motor drives the second driving wheel to rotate, and the output shaft of the second motor drives the first driving wheel to rotate. The first driving wheel drives the first driven wheel to rotate through a synchronous belt, and the second driving wheel drives the second driven wheel to rotate through a synchronous belt.

[0014] Based on the above technical solution, it also includes a gantry frame, a first slider, a processing table, a hydraulic cylinder, and a first guide rail. The two sides inside the gantry frame are fixedly connected to the first guide rail, the positioning seat is located inside the gantry frame, the two sides of the positioning seat are fixedly connected to the first slider, the first slider is slidably connected to the first guide rail, and the upper and lower ends of the hydraulic cylinder are fixedly connected to the gantry frame and the positioning seat, respectively.

[0015] The transmission mechanism includes a gear and a rack, the rack passes through the gantry frame and is slidably connected to the gantry frame, the gear meshes with the rack, the housing of the first motor is fixedly connected to the gantry frame, and the first motor drives the gear to rotate.

[0016] Based on the above technical solution, a connecting shaft is also included. The radial movement assembly includes a slider cylinder. The upper and lower ends of the rotary table are respectively fixedly connected to the lower end of the rack and the housing of the slider cylinder. The slider of the slider cylinder is fixedly connected to the housing of the first motor. The second motor drives the connecting shaft to rotate. The connecting shaft is fixedly connected to the cutting tool.

[0017] The transmission mechanism further includes a second guide rail and a second slider. A second through hole is formed in the middle of the positioning seat. The second guide rail is fixedly connected to the inner wall of the second through hole. The second slider is slidably connected to the second guide rail. The second slider is fixedly connected to the rack.

[0018] Based on the above technical solution, it also includes an intermediate conveyor belt, a feeding conveyor belt and a discharging conveyor belt. The intermediate conveyor belt is located below the gantry frame and between two processing tables. The feeding conveyor belt and the discharging conveyor belt are located on both sides of the processing tables.

[0019] The present invention has the following advantages:

[0020] 1. By drilling blind holes inside the rotor cylinder and using screws to fix the permanent magnet to the rotor cylinder, the outer surface of the rotor cylinder is not damaged, thus solving the problem of deformation of the outer surface of the rotor cylinder;

[0021] 2. By placing the cutting tool inside the rotor cylinder, the rotating cutting tool can move radially and axially relative to the rotor cylinder and rotate axially, thereby making multiple rows of radial fixed holes inside the rotor cylinder, solving the problem that general tapping machines cannot perform radial tapping inside the rotor cylinder;

[0022] 3. The feed conveyor belt, discharge conveyor belt and intermediate conveyor belt drive the rotor cylinder to move. There is no need to use a crane to move the rotor cylinder during processing. The loading and unloading speed is fast, and the production efficiency and safety are high. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0024] Figure 1 : One of the three-dimensional structural schematic diagrams of Example 2;

[0025] Figure 2 : Second three-dimensional structural schematic diagram of Example 2;

[0026] Figure 3 : The third three-dimensional structural schematic diagram of Example 2;

[0027] Figure 4 : A side view of the structure of Example 2;

[0028] Figure 5 : Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0029] Figure 6 : One of the three-dimensional structural diagrams of the first and second movable frames;

[0030] Figure 7 : Second three-dimensional structural diagram of the first and second moving frames;

[0031] Figure 8 : A cross-sectional structural diagram of Example 1;

[0032] Figure 9 : Figure 8 A magnified schematic diagram of the local structure at point B;

[0033] Figure 10 Example 3: Front sectional view of the structure;

[0034] Figure 11 : A top view of the structure of Example 3;

[0035] Figure 12 : A three-dimensional structural diagram of the positioning seat in Example 3. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and examples:

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0040] Example 1:

[0041] like Figure 8 and Figure 9 As shown, this embodiment provides a rotor assembly, including: a rotor cylinder 9, blind holes 91, permanent magnets 92, and screws 94. The inner wall of the rotor cylinder 9 has a plurality of blind holes 91. The permanent magnets 92 are in contact with the inner wall of the rotor cylinder 9. The permanent magnets 92 have a first through hole 920. The screws 94 pass through the first through hole 920 and are inserted into the blind holes 91. The screws 94 are threadedly connected to the blind holes 91.

[0042] Based on the above technical solution, the screw 94 is made of magnetic material; the rotor cylinder 9 has a positioning step 93, and the end of the permanent magnet 92 is in contact with the positioning step 93.

[0043] Working principle:

[0044] Multiple permanent magnets 92 are fixed inside the rotor cylinder 9. Figure 8 The rotor cylinder 9 is equipped with permanent magnets 92 on both the left and right sides. The number of permanent magnets 92 installed in the rotor cylinder 9 varies depending on the stator it is adapted to. The rotor cylinder 9 is the outer shell of the external rotor motor. The outer side of the rotor cylinder 9 is in contact with the belt or chain (in which case the outer side of the rotor cylinder 9 forms teeth) and acts as the driving wheel to drive the driven wheel to rotate.

[0045] The blind hole 91 does not penetrate the rotor cylinder 9, which improves the overall strength of the rotor cylinder 9, maintains the integrity of the outer surface of the rotor cylinder 9, and facilitates its contact with the belt.

[0046] A screw 94 made of magnetic material (stainless steel is optional) passes through a permanent magnet 92 and is threaded into a blind hole 91. Because the screw 94 is attracted to the permanent magnet 92, the enlarged portion and shaft portion (which can be a smooth shaft or a threaded shaft) of the screw 94 also come into contact with the permanent magnet 92, thereby increasing friction and preventing the screw 94 from loosening. It should be noted that when the entire shaft portion of the screw 94 is threaded, the first through hole 920 is a threaded hole.

[0047] Example 2:

[0048] like Figures 1 to 7As shown, this embodiment provides a drilling and tapping machine for processing the rotor cylinder of Embodiment 1, including: a positioning seat 1, a rotary table 2, a positioning block 11, a first motor 31, a second motor 52, and a radial movement assembly. The positioning seat 1 is fixedly connected to a plurality of positioning blocks 11, and the positioning blocks 11 form positioning grooves 110. The rotary table 2 drives the cutting tool 7 to rotate circumferentially. The first motor 31 drives the cutting tool 7 to move axially through a transmission mechanism. The radial movement assembly drives the cutting tool 7 to move radially. The second motor 52 drives the cutting tool 7 to rotate.

[0049] Based on the above technical solution, it also includes a clamping cylinder 12 and a clamping block 13. The clamping cylinder 12 drives the clamping block 13 to move radially. The housing of the clamping cylinder 12 is fixedly connected to the positioning seat 1 and evenly arranged circumferentially. The positioning blocks 11 are fixedly connected to the positioning seat 1 and evenly arranged circumferentially.

[0050] The positioning groove 110 is arc-shaped, and the side of the positioning groove 110 away from the bottom of the groove has a chamfer or rounded corner.

[0051] Based on the above technical solution, a rotating frame 3 is also included. The transmission mechanism includes a track 32, a first lead screw 33, a first movable frame 4, a slider 41, and a first lead nut 43. The track 32 is fixedly connected to the rotating frame 3, the slider 41 is slidably connected to the track 32, the first movable frame 4 is fixedly connected to the slider 41, and the first movable frame 4 is fixedly connected to the first lead nut 43. The first motor 31 drives the first lead screw 33 to rotate, the first lead nut 43 is connected to the first lead screw 33, and the first lead screw 33 is rotatably connected to the rotating frame 3. The two ends of the rotating table 2 are fixedly connected to the positioning seat 1 and the rotating frame 3, respectively.

[0052] Based on the above technical solution, the radial movement assembly includes a fixed sleeve 42, a second lead screw 44, a second moving frame 5, a sliding cylinder 51, a third motor 53, and a second lead screw 54. The first moving frame 4 is fixedly connected to the fixed sleeve 42, the second moving frame 5 is fixedly connected to the sliding cylinder 51, the sliding cylinder 51 is slidably connected to the fixed sleeve 42, the second lead screw 54 is rotatably connected to the second moving frame 5, the second lead screw 44 is connected to the second lead screw 54, the second lead screw 44 is fixedly connected to the fixed sleeve 42, and the third motor 53 drives the second lead screw 54 to rotate.

[0053] Based on the above technical solution, it also includes a rotating shaft 6, a cutting tool 7, and a connecting shaft 71. The housing of the second motor 52 is fixedly connected to the second moving frame 5. The output shaft of the second motor 52 drives the rotating shaft 6 to rotate. The rotating shaft 6 passes through the sliding cylinder 51 and is rotatably connected to the sliding cylinder 51. The end of the rotating shaft 6 is fixedly connected to the connecting shaft 71. The connecting shaft 71 is fixedly connected to the cutting tool 7.

[0054] It also includes a first driving wheel 55, a second driving wheel 57, a second driven wheel 56, and a first driven wheel 61. The housing of the third motor 53 is fixedly connected to the second moving frame 5. The output shaft of the third motor 53 drives the second driving wheel 57 to rotate, and the output shaft of the second motor 52 drives the first driving wheel 55 to rotate. The first driving wheel 55 drives the first driven wheel 61 to rotate via a synchronous belt, and the second driving wheel 57 drives the second driven wheel 56 to rotate via a synchronous belt.

[0055] Working principle:

[0056] During operation, the crane places the rotor cylinder 9 into the designated positioning groove 110. During placement, the chamfer of the positioning groove 110 serves as a guide. The inner and outer sides of the rotor cylinder 9 are respectively aligned with the two sides of the positioning groove 110. Then, the clamping cylinder 12 drives the clamping block 13 to move towards the rotor cylinder 9 until the clamping block 13 clamps and fixes the rotor cylinder 9 relative to the positioning seat 1.

[0057] At this time, the rotating frame 3 is located inside the rotor cylinder 9, and the rotating table 2 drives the rotating frame 3 above to rotate to the designated position. The first motor 31 drives the first lead screw 33 to rotate, which in turn drives the first moving frame 4 and the second moving frame 5 to move vertically. The second motor 52 drives the rotating shaft 6 and the connecting shaft 71 to rotate synchronously. The third motor 53 drives the second lead screw 54 to rotate, which in turn drives the rotating shaft 6 and the sliding cylinder 51 to move synchronously towards the rotor cylinder 9, until the cutter 7 drills a radial blind hole 91 in the rotor cylinder 9. Then, the third motor 53 and the second motor 52 reverse to retract the cutter.

[0058] Afterwards, the first motor 31 drives the cutter 7 to move vertically to the next drilling position to drill holes. After the cutter 7 has drilled a vertical row of holes, the rotary table 2 rotates the cutter 7 to the next row position to drill holes, until all the blind holes 91 required on the inner wall of the rotor cylinder 9 are drilled.

[0059] It should be noted that the axial, radial, and circumferential directions refer to the directions of the rotor cylinder 9 during machining.

[0060] Example 3:

[0061] like Figures 10 to 12 As shown, this embodiment provides a drilling and tapping machine for processing the rotor cylinder of Embodiment 1, including: a positioning seat 1, a rotary table 2, a positioning block 11, a first motor 31, a second motor 52, and a radial movement assembly. The positioning seat 1 is fixedly connected to a plurality of positioning blocks 11, and the positioning blocks 11 form positioning grooves 110. The rotary table 2 drives the cutting tool 7 to rotate circumferentially. The first motor 31 drives the cutting tool 7 to move axially through a transmission mechanism. The radial movement assembly drives the cutting tool 7 to move radially. The second motor 52 drives the cutting tool 7 to rotate.

[0062] Based on the above technical solution, it also includes a clamping cylinder 12 and a clamping block 13. The clamping cylinder 12 drives the clamping block 13 to move radially. The housing of the clamping cylinder 12 is fixedly connected to the positioning seat 1 and is evenly arranged circumferentially. The positioning blocks 11 are fixedly connected to the positioning seat 1 and are evenly arranged axially.

[0063] The positioning groove 110 is arc-shaped, and the side of the positioning groove 110 away from the bottom of the groove has a chamfer or rounded corner.

[0064] Based on the above technical solution, it also includes a gantry frame 8, a first slider 14, a processing table 81, a hydraulic cylinder 82, and a first guide rail 83. The two sides inside the gantry frame 8 are fixedly connected to the first guide rail 83, the positioning seat 1 is located inside the gantry frame 8, the two sides of the positioning seat 1 are fixedly connected to the first slider 14, the first slider 14 is slidably connected to the first guide rail 83, and the upper and lower ends of the hydraulic cylinder 82 are fixedly connected to the gantry frame 8 and the positioning seat 1, respectively.

[0065] The transmission mechanism includes a gear 34 and a rack 355. The rack 355 passes through the gantry frame 8 and is slidably connected to the gantry frame 8. The gear 34 meshes with the rack 355. The housing of the first motor 31 is fixedly connected to the gantry frame 8. The first motor 31 drives the gear 34 to rotate.

[0066] Based on the above technical solution, a connecting shaft 71 is also included. The radial movement assembly includes a slider cylinder 58. The upper and lower ends of the rotary table 2 are respectively fixedly connected to the lower end of the rack 355 and the housing of the slider cylinder 58. The slider of the slider cylinder 58 is fixedly connected to the housing of the second motor 52. The second motor 52 drives the connecting shaft 71 to rotate. The connecting shaft 71 is fixedly connected to the tool 7.

[0067] The transmission mechanism further includes a second guide rail 15 and a second slider 36. A second through hole 10 is formed in the middle of the positioning seat 1. The second guide rail 15 is fixedly connected to the inner wall of the second through hole 10. The second slider 36 is slidably connected to the second guide rail 15. The second slider 36 is fixedly connected to the rack 355.

[0068] Based on the above technical solution, it also includes an intermediate conveyor belt 84, a feeding conveyor belt 85 and a discharging conveyor belt 86. The intermediate conveyor belt 84 is located below the gantry frame 8 and between two processing tables 81. The feeding conveyor belt 85 and the discharging conveyor belt 86 are located on both sides of the processing table 81.

[0069] Working principle:

[0070] The feed conveyor belt 85 drives the rotor cylinder 9 to move onto the processing table 81, and the intermediate conveyor belt 84 continues to drive the rotor cylinder 9 to move below the positioning seat 1, so that the rotor cylinder 9 is no longer in contact with the feed conveyor belt 85.

[0071] Then, hydraulic cylinder 82 drives positioning seat 1 to descend until the lower end of clamping block 13 is lower than the upper end of rotor cylinder 9, at which point the lower end of positioning block 11 is higher than the lower end of clamping block 13. At this time, all clamping blocks 13 are located on the side of rotor cylinder 9, and clamping cylinder 12 drives clamping blocks 13 to move radially inward. After clamping blocks 13 contact the side of rotor cylinder 9, they drive rotor cylinder 9 to move directly below positioning seat 1.

[0072] At this point, the rotor cylinder 9 and the positioning seat 1 are basically coaxial, but there may be some error. Then, the hydraulic cylinder 82 drives the positioning seat 1 to continue downward until the rotor cylinder 9 is inserted into the corresponding positioning groove 110 (during this process, the rotor cylinder 9 will be guided by chamfers or rounded corners and move slightly). At this point, the two sides and end faces in the positioning groove 110 are respectively in contact with the two sides and end faces of the rotor cylinder 9, and the rotor cylinder 9 and the positioning seat 1 are coaxial. Then, the clamping cylinder 12 drives the clamping block 13 to move radially inward, clamping the rotor cylinder 9 and fixing it to the positioning seat 1.

[0073] Then, the first motor 31 drives the gear 34 to rotate, and the gear 34 drives the rack 35 to move downward, thereby driving the cutter 7 downward into the rotor cylinder 9. The rotary table 2 drives the slider cylinder 58 to rotate circumferentially to a specified angle, and then the slider cylinder 58 drives the second motor 52 and the cutter 7 to move radially outward. The second motor 52 drives the cutter 7 to rotate, and the cutter 7 inserts into the rotor cylinder 9 to make a smooth hole or a threaded hole.

[0074] After all the drilling operations are completed, the first motor 31 drives the gear 34 to rotate, and the gear 34 drives the rack 35 to move upward, thereby causing the cutter 7 to move upward and leave into the rotor cylinder 9. The clamping cylinder 12 drives the clamping block 13 to move radially outward, and the hydraulic cylinder 82 drives the positioning seat 1 to rise and reset. The intermediate conveyor belt 84 drives part of the rotor cylinder 9 to move above the discharge conveyor belt 72, and the discharge conveyor belt 72 drives the rotor cylinder 9 away from the processing table 81.

[0075] It should be noted that the axial, radial, and circumferential directions refer to the directions of the rotor cylinder 9 during machining.

[0076] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A drilling and tapping machine for machining rotor cylinders, characterized in that, include: The positioning base (1), the rotating table (2), the positioning block (11), the first motor (31), the second motor (52) and the radial movement assembly are fixedly connected to the positioning blocks (11). The positioning blocks (11) are formed with positioning grooves (110). The rotating table (2) drives the cutter (7) to rotate circumferentially. The first motor (31) drives the cutter (7) to move axially through the transmission mechanism. The radial movement assembly drives the cutter (7) to move radially. The second motor (52) drives the cutter (7) to rotate. It also includes a clamping cylinder (12) and a clamping block (13). The clamping cylinder (12) drives the clamping block (13) to move radially. The housing of the clamping cylinder (12) is fixedly connected to the positioning seat (1) and evenly arranged in the circumferential direction. The positioning block (11) is fixedly connected to the positioning seat (1) and evenly arranged in the circumferential direction. It also includes a rotating frame (3), the transmission mechanism includes a track (32), a first lead screw (33), a first moving frame (4), a slider (41) and a first lead nut (43), the track (32) is fixedly connected to the rotating frame (3), the slider (41) is slidably connected to the track (32), the first moving frame (4) is fixedly connected to the slider (41), the first moving frame (4) is fixedly connected to the first lead nut (43), the first motor (31) drives the first lead screw (33) to rotate, the first lead nut (43) is connected to the first lead screw (33), the first lead screw (33) is rotatably connected to the rotating frame (3), and the two ends of the rotating table (2) are fixedly connected to the positioning seat (1) and the rotating frame (3) respectively; The radial movement assembly includes a fixed sleeve (42), a second lead screw nut (44), a second moving frame (5), a sliding cylinder (51), a third motor (53), and a second lead screw (54). The first moving frame (4) is fixedly connected to the fixed sleeve (42), the second moving frame (5) is fixedly connected to the sliding cylinder (51), the sliding cylinder (51) is slidably connected to the fixed sleeve (42), the second lead screw (54) is rotatably connected to the second moving frame (5), the second lead screw nut (44) is connected to the second lead screw (54), the second lead screw nut (44) is fixedly connected to the fixed sleeve (42), and the third motor (53) drives the second lead screw (54) to rotate. It also includes a rotating shaft (6), a cutting tool (7) and a connecting shaft (71). The housing of the second motor (52) is fixedly connected to the second moving frame (5). The output shaft of the second motor (52) drives the rotating shaft (6) to rotate. The rotating shaft (6) passes through the sliding cylinder (51) and is rotatably connected to the sliding cylinder (51). The end of the rotating shaft (6) is fixedly connected to the connecting shaft (71). The connecting shaft (71) is fixedly connected to the cutting tool (7). The clamping block (13) clamps and fixes the rotor cylinder (9) relative to the positioning seat (1).

2. The drilling and tapping machine for machining rotor cylinders according to claim 1, characterized in that: The positioning groove (110) is arc-shaped, and the side of the positioning groove (110) away from the bottom of the groove has a chamfer or rounded corner.

3. A drilling and tapping machine for machining rotor cylinders according to claim 1, characterized in that: It also includes a first driving wheel (55), a second driving wheel (57), a second driven wheel (56), and a first driven wheel (61). The housing of the third motor (53) is fixedly connected to the second moving frame (5). The output shaft of the third motor (53) drives the second driving wheel (57) to rotate. The output shaft of the second motor (52) drives the first driving wheel (55) to rotate. The first driving wheel (55) drives the first driven wheel (61) to rotate via a synchronous belt. The second driving wheel (57) drives the second driven wheel (56) to rotate via a synchronous belt.

4. A drilling and tapping machine for machining rotor cylinders according to claim 1, characterized in that: The inner wall of the rotor cylinder (9) has multiple blind holes (91), the permanent magnet (92) is in contact with the inner wall of the rotor cylinder (9), the permanent magnet (92) has a first through hole (920), the screw (94) passes through the first through hole (920) and is inserted into the blind hole (91), and the screw (94) is threadedly connected to the blind hole (91).

5. A drilling and tapping machine for machining rotor cylinders according to claim 4, characterized in that: The screw (94) is made of magnetic material; the rotor cylinder (9) has a positioning step (93) formed thereon, and the end of the permanent magnet (92) contacts the positioning step (93).

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