Gear modification device for motor train unit

Abstract

The invention provides a motor train unit gear modification device which comprises a rack, a workbench, a driving mechanism, a mechanical arm, a control device and a resistance mechanism fixedly installed on the workbench, the mechanical arm and the driving mechanism are both fixedly installed on the rack, the workbench is connected with the rack through a lead screw nut pair, an image sensor is arranged on the driving mechanism, and the control device is connected with the control device. A grinding wheel and a visual sensor are arranged on the mechanical arm, a driving wheel needing to be shaped is arranged on the driving mechanism, a driven wheel needing to be shaped is arranged on the resistance mechanism, and the driving wheel needing to be shaped and the driven wheel needing to be shaped can be meshed. The lead screw nut pair, the driving mechanism, the resistance mechanism, the image sensor, the mechanical arm and the visual sensor are all electrically connected with the control device. Based on the gear deformation amount and the tooth surface contact spot data obtained under the simulated gear service condition, the control device controls the mechanical arm to shape the gear, the gear shape modification effect can be effectively improved, and then the meshing quality of the gear is improved.

Description

Technical Field

[0001] The invention relates to a gear shaping device for an EMU train, and belongs to the technical field of gear processing. Background Art

[0002] During the service life of gears, the meshing quality of gears directly affects the vibration and impact on the EMU system, and thus affects the fatigue life and reliability of the EMU. Modifying the tooth direction and tooth profile of the EMU gears can make the gears have better meshing quality.

[0003] During the gear shaping process for EMUs, factors such as gear size, clamping method, gear shape, stress level, and adjustable shaping amount must be considered. Traditional shaping methods rely on empirically determined shaping amount, length, and curve. These methods lack quantitative analysis of uncontrollable factors such as manufacturing errors and installation deviations, resulting in unstable shaping results. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention provides a gear shaping device for a multiple unit train, which controls a manipulator to shape the gear based on the gear deformation and tooth surface contact spot data obtained under simulated gear service conditions. The device can effectively improve the gear shaping effect and thereby improve the meshing quality of the gear.

[0005] In order to solve the above technical problems, the present invention provides a gear shaping device for a multiple unit (EMU), comprising a frame, a workbench, a drive mechanism, a manipulator, a control device and a resistance mechanism fixedly mounted on the workbench, the manipulator and the drive mechanism are both fixedly mounted on the frame, the workbench is connected to the frame via a screw-nut pair, an image sensor is arranged on the drive mechanism, a grinding wheel and a visual sensor are arranged on the manipulator, a driving wheel to be shaped is arranged on the drive mechanism, a driven wheel to be shaped is arranged on the resistance mechanism, the driving wheel to be shaped and the driven wheel to be shaped can be meshed, and the screw-nut pair, the drive mechanism, the resistance mechanism, the image sensor, the manipulator and the visual sensor are all electrically connected to the control device.

[0006] In a specific embodiment, the driving mechanism includes a driving motor, a driven gear shaft, a driving shaft A, a driving shaft B, a three-jaw chuck and an image sensor fixedly mounted on the driving shaft B, a driving gear shaft is arranged on the output shaft of the driving motor, the driven gear shaft is meshed with the driving gear shaft, and the two ends of the driven gear shaft pass through two opposite side plates of the frame respectively, the driving shaft A is arranged above the frame through a bracket A fixedly arranged on the frame, and the driving shaft B is arranged above the frame through a bracket B fixedly arranged on the frame, the driving shaft A and the driving shaft B are both arranged above the driven gear shaft, the driving shaft A and the driving shaft B are parallel to the driven gear shaft, one end of the driven gear shaft is connected to one end of the driving shaft A through a belt transmission mechanism A, and the other end of the driven gear shaft is connected to one end of the driving shaft B through a belt transmission mechanism B, the three-jaw chuck is arranged at the other end of the driving shaft A, the driving wheel to be shaped is arranged on the three-jaw chuck, the driving shaft A, the three-jaw chuck and the driving wheel to be shaped are concentrically arranged, and the driving motor is electrically connected to the control device.

[0007] In a specific embodiment, the resistance mechanism includes a resistance bracket, a resistance motor, a resistance shaft and a six-jaw chuck fixedly mounted on a workbench, the resistance motor is fixedly mounted on the upper end of the resistance bracket, and a bearing hole for mounting a bearing is opened on the top of the resistance bracket, a bearing is arranged in the bearing hole, one end of the resistance shaft passes through the bearing in the bearing hole of the resistance bracket and is connected to the output shaft of the resistance motor, the other end of the resistance shaft is connected to the six-jaw chuck, the driven wheel that needs to be shaped is fixedly mounted on the six-jaw chuck, the resistance shaft, the output shaft of the resistance motor, the six-jaw chuck and the driven wheel that needs to be shaped are concentrically arranged, and the resistance motor is electrically connected to the control device.

[0008] In a specific embodiment, the workbench is provided with a square groove.

[0009] In a specific embodiment, the frame is provided with a waste tray and square holes.

[0010] In a specific embodiment, the screw-nut pair includes a screw, a screw motor and a guide rail parallel to the screw. The screw motor and the guide rail are fixedly mounted on a frame. A screw hole that cooperates with the screw is provided on the side of the workbench. One end of the screw is connected to the screw motor through a coupling. The other end of the screw passes through the screw hole on the side of the workbench and then passes through a bearing provided on the frame. The side of the workbench opposite to the side with the screw hole that cooperates with the screw is connected to the slider of the guide rail, and the screw motor is electrically connected to the control device.

[0011] In a specific embodiment, the belt transmission mechanism A includes a driving pulley A, a driven pulley A and an annular belt A connecting the driving pulley A and the driven pulley A, the driving pulley A is connected to the driven gear shaft by an interference fit, and the driven pulley A is connected to the drive shaft A by an interference fit, and the belt transmission mechanism B includes a driving pulley B, a driven pulley B and an annular belt B connecting the driving pulley B and the driven pulley B, the driving pulley B is connected to the driven gear shaft by an interference fit, and the driven pulley B is connected to the drive shaft B by an interference fit.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The present invention sets a driving mechanism and a resistance mechanism so that the driving wheel that needs to be modified and the driven wheel that needs to be modified are placed in a simulated gear service condition. Therefore, the image sensor can capture the deformation of the driving wheel that needs to be modified under the simulated gear service condition, and the visual sensor obtains the tooth surface contact spot data of the driving wheel under the simulated gear service condition. The control device calculates the stress according to the deformation of the gear, and the control device calculates the modification amount and the modification trajectory according to the stress and the tooth surface contact spot data. The manipulator modifies the driving wheel that needs to be modified and the driven wheel that needs to be modified according to the modification amount and the modification trajectory. This can effectively improve the modification effect of the driving wheel that needs to be modified and the driven wheel that needs to be modified, and thus improve the meshing quality of the driving wheel that needs to be modified and the driven wheel that needs to be modified.

[0014] 2. The present invention can simulate various actual operating conditions of gears by adjusting the drive motor and the resistance motor, and has a wider range of adaptability to working conditions.

[0015] 3. The present invention can clamp gears that need to be shaped with different center holes or gear shafts through a chuck, which has better versatility. At the same time, the workbench can be moved to adapt to two gears that need to be shaped with different center distances. At the same time, when shaping the driving wheel that needs to be shaped, the workbench can be moved to avoid interference between the driven wheel that needs to be shaped and the manipulator.

[0016] 4. The present invention uses visual sensors and image sensors to obtain the gear deformation and tooth surface contact spot data under simulated gear operating conditions in real time, and based on the gear deformation and tooth surface contact spot data, it judges the shaping effects of the driving wheel that needs to be modified and the driven wheel that needs to be modified in real time.

[0017] 5. The present invention adopts a modular design, and each module is processed and assembled separately, and finally the modules are assembled together. Its structure is reasonable and ingenious, easy to implement, and suitable for completing the processing of EMU gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the structure of the present invention (the driving wheel that needs to be reshaped is meshed with the driven wheel that needs to be reshaped).

[0019] Figure 2 This is a schematic diagram of the structure of the present invention (the manipulator needs to shape the driving wheel to be shaped).

[0020] Figure 3 This is a schematic diagram of the structure of the present invention (the driven wheel that needs to be shaped during the shaping of the manipulator).

[0021] Figure 4 It is a schematic diagram of the explosion structure of the driving mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of the explosion structure of the resistance mechanism of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the frame and workbench of the present invention (the connection between the screw nut pair and the frame and workbench is a cross-sectional view).

[0024] Figure 1: Frame 1, workbench 2, drive mechanism 3, resistance mechanism 4, manipulator 5, bearing 6, waste tray 11, square hole 12, lead screw 13, lead screw motor 14, guide rail 15, coupling 16, square slot 21, screw hole 22, drive motor 30, driven gear shaft 31, drive shaft A32, drive shaft B33, three-jaw chuck 34, driving wheel to be reshaped 35, bracket A36, bracket B37, belt transmission mechanism A38, belt transmission mechanism B39, driving gear shaft 3 00, elastic retaining ring 310, image sensor 331, bracket A body 360, bracket A cover 361, bracket B body 370, bracket B cover 371, driving pulley A380, driven pulley A381, endless belt A382, driving pulley B390, driven pulley B391, endless belt B392, resistance bracket 41, resistance motor 42, resistance shaft 43, six-jaw chuck 44, driven pulley 45 that needs to be reshaped, resistance bracket body 411, resistance bracket cover 412. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the embodiments and accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.

[0026] refer to Figures 1 to 6A gear shaping device for an EMU is characterized in that it includes a frame 1, a workbench 2, a driving mechanism 3, a manipulator 5, a control device and a resistance mechanism 4 fixedly mounted on the workbench 2, the manipulator 5 and the driving mechanism 3 are both fixedly mounted on the frame 1, the workbench 2 is connected to the frame 1 through a screw-nut pair, the driving mechanism 3 is arranged with an image sensor 331, the manipulator 5 is arranged with a grinding wheel and a visual sensor, the driving wheel 35 to be shaped is arranged on the driving mechanism 3, and the resistance mechanism 4 is arranged with a driven wheel 45 to be shaped. The driving wheel 35 to be shaped and the driven wheel 45 to be shaped can be meshed, and the screw-nut pair, the driving mechanism 3, the resistance mechanism 4, the image sensor 331, the manipulator 5 and the visual sensor are all electrically connected to the control device.

[0027] Preferably, grinding wheels of different specifications can be replaced according to actual needs.

[0028] Preferably, the control device is provided with a human-computer interaction interface.

[0029] The workbench 2 moves on the frame 1 under the action of the screw-nut pair so that the center distance between the driving wheel 35 to be shaped and the driven wheel 45 to be shaped meets the requirements.

[0030] Optionally, the manipulator 5 and the driving mechanism 3 are both mounted on the frame 1 through bolt connection, and the resistance mechanism 4 is also mounted on the workbench 2 through bolt connection. The manipulator is of prior art.

[0031] The gear shaping device is easy to assemble and disassemble, and can realize the shaping of driving wheels 35 and driven wheels 45 of different sizes that need to be shaped, and can adjust the center distance between the driving wheel 35 and the driven wheel 45 that need to be shaped. At the same time, the workbench 2 can be moved during the shaping process to avoid interference between the manipulator 5 and the driven wheel 45 that needs to be shaped. The driving wheel 35 and the driven wheel 45 that need to be shaped can be placed in a simulated gear service condition through the resistance mechanism 4, and the image sensor 331 can be used to detect the gear shaping. The deformation amount of the gear is then used to calculate the stress of the driving wheel 35 that needs to be reshaped and the driven wheel 45 that needs to be reshaped under the simulated gear service conditions, and the tooth surface contact spot data is obtained through the visual sensor. The control device calculates the modification amount and the modification trajectory according to the stress and the tooth surface contact spot data. The control device controls the grinding wheel according to the modification amount and the modification trajectory to improve the modification effect of the driving wheel 35 that needs to be reshaped and the driven wheel 45 that needs to be reshaped, so as to improve the meshing quality of the driving wheel 35 that needs to be reshaped and the driven wheel 45 that needs to be reshaped.

[0032] Preferably, the driving mechanism 3 includes a driving motor 30, a driven gear shaft 31, a driving shaft A32, a driving shaft B33, a three-jaw chuck 34 and an image sensor 331 fixedly mounted on the driving shaft B33, a driving gear shaft 300 is arranged on the output shaft of the driving motor 30, the driven gear shaft 31 is meshed with the driving gear shaft 300, and both ends of the driven gear shaft 31 pass through two opposite side plates of the frame 1, and the shoulders of both ends of the driven gear shaft 31 are provided with bearings 6 that fit into the corresponding bearing holes on the frame 1, and both ends of the driven gear shaft 31 are also provided with elastic retaining rings 310, and the elastic retaining rings 310 cooperate with the corresponding bearing holes to limit the driven gear shaft 31, and the driving shaft A32 is arranged above the frame 1 through a bracket A36 fixedly set on the frame 1, and the upper end of the bracket A is provided with a bearing hole, and the bearing 6 at the shoulder of the driving shaft A fits with the bracket The bearing hole at the upper end of A36 fits, and the drive shaft B33 is arranged above the frame 1 through a bracket B37 fixed on the frame 1. A bearing hole is provided at the upper end of the bracket B, and the bearing 6 at the shoulder of the drive shaft B fits with the bearing hole at the upper end of the bracket B37. The drive shaft A32 and the drive shaft B33 are both arranged above the driven gear shaft 31. The drive shaft A32 and the drive shaft B33 are parallel to the driven gear shaft 31. One end of the driven gear shaft 31 is connected to one end of the drive shaft A32 through a belt transmission mechanism A38, and the other end of the driven gear shaft 31 is connected to one end of the drive shaft B33 through a belt transmission mechanism B39. The three-jaw chuck 34 is provided at the other end of the drive shaft A32, and the driving wheel 35 that needs to be shaped is arranged on the three-jaw chuck 34. The drive shaft A32, the three-jaw chuck 34 and the driving wheel 35 that needs to be shaped are arranged concentrically, and the drive motor 30 is electrically connected to the control device.

[0033] Furthermore, the bracket A36 includes a bracket A body 360 and a bracket A cover 361, and the bracket A cover 361 is fixedly installed on the top of the bracket A body 360 by bolt connection. The bracket B37 includes a bracket B body 370 and a bracket B cover 371, and the bracket B cover 371 is fixedly installed on the top of the bracket B body 370 by bolt connection.

[0034] Specifically, the belt transmission mechanism A38 includes a driving pulley A380, a driven pulley A381 and an annular belt A382 connecting the driving pulley A380 and the driven pulley A381, the driving pulley A380 is connected to the driven gear shaft 31 by an interference fit, and the driven pulley A381 is connected to the drive shaft A32 by an interference fit. The belt transmission mechanism B39 includes a driving pulley B390, a driven pulley B391 and an annular belt B392 connecting the driving pulley B390 and the driven pulley B391, the driving pulley B390 is connected to the driven gear shaft 31 by an interference fit, and the driven pulley B391 is connected to the drive shaft B33 by an interference fit.

[0035] The driving motor 30 drives the driving gear shaft 300 to rotate, and the driving gear shaft 300 drives the two driving pulleys to move. The two driving pulleys transmit power to the two driven pulleys through corresponding annular belts. The two driven pulleys respectively drive the driving shaft A32 and the driving shaft B33 to rotate. The driving shaft A32 drives the three-jaw chuck 34 and the driving pulley 35 that needs to be shaped to rotate. The driving shaft B33 drives the image sensor 331 to rotate. The angular velocity of the driving shaft B33 and the driving shaft A32 is the same.

[0036] Preferably, the resistance mechanism 4 includes a resistance bracket 41, a resistance motor 42, a resistance shaft 43 and a six-jaw chuck 44 fixedly mounted on the workbench 2, the resistance motor 42 is fixedly mounted on the upper end of the resistance bracket 41 by bolt connection, and a bearing hole for mounting a bearing is opened on the top of the resistance bracket 41, and a bearing 6 is arranged in the bearing hole. One end of the resistance shaft 43 passes through the bearing 6 in the bearing hole of the resistance bracket 41 and is connected to the output shaft of the resistance motor 42, and the other end of the resistance shaft 43 is connected to the six-jaw chuck 44. The driven wheel 45 that needs to be shaped is fixedly mounted on the six-jaw chuck 44, and the resistance shaft 43, the output shaft of the resistance motor 42, the six-jaw chuck 44 and the driven wheel 45 that needs to be shaped are concentrically arranged. The resistance motor 42 is electrically connected to the control device, and the resistance motor 42 drives the resistance shaft 43 to move to drive the six-jaw chuck 44 and the driven wheel 45 that needs to be shaped to rotate, so that the driving wheel 35 that needs to be shaped and the driven wheel 45 that needs to be shaped are both in the simulated gear service condition.

[0037] Furthermore, the resistance bracket 41 includes a resistance bracket body 411 and a resistance bracket cover 412. The resistance bracket cover 412 is fixedly mounted on the top of the resistance bracket body 411 by bolt connection.

[0038] Preferably, the manipulator includes a first axis, a second axis, a third axis, a fourth axis, a fifth axis, a grinding wheel, a visual device arranged on the fifth axis and a base fixedly mounted on the frame. The inner cavity of the fifth axis is provided with a motor, the output end of the motor is connected to the grinding wheel, the motor drives the grinding wheel to rotate, the fifth axis is hingedly connected to the fourth axis, the fourth axis is rotatably connected to the third axis, the third axis is hingedly connected to the second axis, the second axis is hingedly connected to the first axis, the first axis is rotatably connected to the base, and the motor is electrically connected to the control device. During the shaping process, the manipulator can change its posture according to actual needs, and the grinding wheel can rotate around the fifth axis under the action of the motor to grind the tooth surface.

[0039] Preferably, the workbench 2 is provided with a square groove 21, which is located below the driven wheel that needs to be shaped. The driven wheel that needs to be shaped can be partially located in the square groove 21 to avoid interference between the driven wheel to be shaped and the workbench.

[0040] Preferably, the frame 1 is provided with a waste tray 11 and a square hole 12. The waste tray 11 is used to receive waste, and the provision of the square hole 12 can effectively reduce the weight of the frame.

[0041] Specifically, the screw-nut pair includes a screw 13, a screw motor 14 and a guide rail 15 parallel to the screw 13. The screw motor 14 and the guide rail 15 are fixedly mounted on the frame 1. A screw hole 22 that cooperates with the screw 13 is provided on the side of the workbench 2. One end of the screw 13 is connected to the screw motor 14 through a coupling 16. The other end of the screw 13 passes through the screw hole 22 on the side of the workbench 2 and then passes through the bearing 6 set on the frame 1. The side of the workbench 2 opposite to the side with the screw hole 22 that cooperates with the screw 13 is connected to the slider of the guide rail 15, and the screw motor 14 is electrically connected to the control device.

[0042] The working steps of the present invention are as follows:

[0043] Step 1: Apply cinnabar to the tooth surface of the driving wheel 35 that needs to be reshaped.

[0044] Step 2. The driving wheel 35 that needs to be shaped is meshed with the driven wheel 45 that needs to be shaped: After the instruction is input from the human-computer interaction interface, the control device controls the screw motor 14 to output torque according to the instruction, the screw motor 14 drives the screw 13 to rotate, and the workbench 2 moves along the guide rail 15 on the frame 1 until the driving wheel 35 that needs to be shaped is meshed with the driven wheel 45 that needs to be shaped.

[0045] Step 3. Obtain the stress and tooth surface contact spot data of a tooth under simulated gear service conditions: After the active wheel 35 that needs to be modified is engaged with the driven wheel 45 that needs to be modified, the control device controls the output speed and torque of the drive motor 30 and the output speed and torque of the resistance motor 42 according to the set parameters, so that the active wheel 35 that needs to be modified and the driven wheel 45 that needs to be modified are both rotated by the degree of one tooth. The control device controls the drive motor 30 and the resistance motor 42 to stop moving, and the screw motor 14 moves to separate the active wheel 35 that needs to be modified and the driven wheel 45 that needs to be modified. During the rotation of the active wheel 35 that needs to be modified and the driven wheel 45 that needs to be modified, the image sensor 331 captures the deformation of the gear and sends it to the control device. The visual sensor obtains the tooth surface contact spot data and sends it to the control device. The control device calculates the stress according to the deformation of the gear. The control device calculates the modification amount and the modification trajectory according to the stress and the tooth surface contact spot data.

[0046] Step 4: Reshape a tooth of the driving wheel 35 and a tooth of the driven wheel 45 that need to be reshaped: The control device controls the movement of the manipulator 5 according to the stress and reshaping trajectory calculated in step 2, and then reshapes the tooth corresponding to the driving wheel 35 and the tooth corresponding to the driven wheel 45 that need to be reshaped through the grinding wheel.

[0047] Step 5, reshape the teeth of the driving wheel 35 that need to be reshaped and the teeth of the driven wheel 45 that need to be reshaped one by one: after the reshaping of the teeth of the driving wheel 35 that need to be reshaped and the teeth of the driven wheel 45 that need to be reshaped are completed, the control device controls the drive motor 30 and the resistance motor 42 to output torque according to the parameters set by the system so that the driving wheel 35 that needs to be reshaped and the driven wheel 45 that need to be reshaped are rotated by one tooth, and then executes step 4 until each tooth of the driving wheel 35 that needs to be reshaped and the driven wheel 45 that needs to be reshaped is completed.

[0048] Step 6: Check whether the driving wheel 35 and the driven wheel 45 that need to be shaped meet the requirements: Execute step 2 to make the driving wheel 35 and the driven wheel 45 that need to be shaped mesh with each other, and the control device controls the drive motor 30 and the resistance motor 42 to move, so that the driving wheel 35 and the driven wheel 45 that need to be shaped rotate. The number of rotations is determined according to the actual situation. After the driving wheel 35 and the driven wheel 45 that need to be shaped rotate the target number of rotations, the driving wheel 35 and the driven wheel 45 that need to be shaped are meshed under the control of the control device. The wheel 35 and the driven wheel 45 that needs to be reshaped are separated. During the rotation of the driving wheel 35 that needs to be reshaped and the driven wheel 45 that needs to be reshaped, the image sensor 331 captures the deformation of the gear and sends it to the control device. The visual sensor obtains the tooth surface contact spot data and sends it to the control device. The control device calculates the stress according to the deformation of the gear. The control device determines whether the stress and the tooth surface contact spot data meet the conditions. If the conditions are met, the shaping is stopped. If the conditions are not met, steps 2 to 6 are executed until the conditions are met.

[0049] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, several simple deductions and substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A gear shaping device for an EMU, characterized in that: The invention comprises a frame (1), a workbench (2), a driving mechanism (3), a manipulator (5), a control device and a resistance mechanism (4) fixedly mounted on the workbench (2); the manipulator (5) and the driving mechanism (3) are both fixedly mounted on the frame (1); the workbench (2) is connected to the frame (1) via a screw nut pair; an image sensor (331) is arranged on the driving mechanism (3); a grinding wheel and a visual sensor are arranged on the manipulator (5); a driving wheel (35) that needs to be shaped is arranged on the driving mechanism (3); a driven wheel (45) that needs to be shaped is arranged on the resistance mechanism (4); the driving wheel (35) that needs to be shaped and the driven wheel (45) that needs to be shaped are meshed; the screw nut pair, the driving mechanism (3), the resistance mechanism (4), the image sensor (331), the manipulator (5) and the visual sensor are all electrically connected to the control device.

2. The intelligent EMU gear shaping device according to claim 1, characterized in that: The driving mechanism (3) comprises a driving motor (30), a driven gear shaft (31), a driving shaft A (32), a driving shaft B (33), a three-jaw chuck (34), and an image sensor (331) fixedly mounted on the driving shaft B (33); a driving gear shaft (300) is arranged on the output shaft of the driving motor (30); the driven gear shaft (31) is meshed with the driving gear shaft (300); both ends of the driven gear shaft (31) respectively pass through two opposite side plates of the frame (1); the driving shaft A (32) is arranged above the frame (1) via a bracket A (36) fixedly mounted on the frame (1); and the driving shaft B (33) is arranged above the frame (1) via a bracket B (37) fixedly mounted on the frame (1). The driving shaft A (32) and the driving shaft B (33) are both arranged above the driven gear shaft (31), and the driving shaft A (32) and the driving shaft B (33) are parallel to the driven gear shaft (31). One end of the driven gear shaft (31) is connected to one end of the driving shaft A (32) through a belt transmission mechanism A (38), and the other end of the driven gear shaft (31) is connected to one end of the driving shaft B (33) through a belt transmission mechanism B (39). A three-jaw chuck (34) is arranged at the other end of the driving shaft A (32), and a driving wheel (35) that needs to be shaped is arranged on the three-jaw chuck (34). The driving shaft A (32), the three-jaw chuck (34) and the driving wheel (35) that needs to be shaped are concentrically arranged, and the driving motor (30) is electrically connected to the control device.

3. The gear shaping device for EMU according to claim 2, characterized in that: The resistance mechanism (4) comprises a resistance bracket (41) fixedly mounted on the workbench (2), a resistance motor (42), a resistance shaft (43) and a six-jaw chuck (44); the resistance motor (42) is fixedly mounted on the upper end of the resistance bracket (41); a bearing hole for mounting a bearing is opened on the top of the resistance bracket (41); a bearing (6) is arranged in the bearing hole; one end of the resistance shaft (43) passes through the bearing (6) in the bearing hole of the resistance bracket (41) and is connected to the output shaft of the resistance motor (42); the other end of the resistance shaft (43) is connected to the six-jaw chuck (44); a driven wheel (45) to be shaped is fixedly mounted on the six-jaw chuck (44); the resistance shaft (43), the output shaft of the resistance motor (42), the six-jaw chuck (44) and the driven wheel (45) to be shaped are concentrically arranged; and the resistance motor (42) is electrically connected to a control device.

4. The gear shaping device for EMU according to claim 5, characterized in that: The workbench (2) is provided with a square groove (21).

5. The gear shaping device for EMU according to claim 4, characterized in that: The frame (1) is provided with a waste tray (11) and a square hole (12).

6. The gear shaping device for EMU according to claim 5, characterized in that: The screw nut pair comprises a screw (13), a screw motor (14) and a guide rail (15) parallel to the screw (13); the screw motor (14) and the guide rail (15) are fixedly mounted on the frame (1); a screw hole (22) matching the screw (13) is provided on the side of the workbench (2); one end of the screw (13) is connected to the screw motor (14) through a coupling (16); the other end of the screw (13) passes through the screw hole (22) on the side of the workbench (2) and then passes through a bearing (6) provided on the frame (1); the side of the workbench (2) opposite to the side with the screw hole (22) matching the screw (13) is connected to the slider of the guide rail (15); the screw motor (14) is electrically connected to the control device.

7. The gear shaping device for EMU according to claim 6, characterized in that: The belt transmission mechanism A (38) includes a driving pulley A (380), a driven pulley A (381) and an annular belt A (382) connecting the driving pulley A (380) and the driven pulley A (381), the driving pulley A (380) and the driven gear shaft (31) are connected by interference fit, and the driven pulley A (381) and the driving shaft A (32) are connected by interference fit. The belt transmission mechanism B (39) includes a driving pulley B (390), a driven pulley B (391) and an annular belt B (392) connecting the driving pulley B (390) and the driven pulley B (391), the driving pulley B (390) and the driven gear shaft (31) are connected by interference fit, and the driven pulley B (391) and the driving shaft B (33) are connected by interference fit.

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