CN216758174U

CN216758174U - Bidirectional finish turning machine for rotor commutator

Info

Publication number: CN216758174U
Application number: CN202122713873.5U
Authority: CN
Inventors: 尹凯凯; 周华国; 廖建勇
Original assignee: Shenzhen Honest Mechatronic Equipment Co Ltd
Current assignee: Shenzhen Honest Mechatronic Equipment Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-06-17
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses a bidirectional fine turning machine for a rotor commutator, which comprises a rack, a feeding and discharging mechanism, a first fine turning mechanism, a first placing seat, a second fine turning mechanism, a second placing seat, a first material moving mechanism and a second material moving mechanism, wherein the first material moving mechanism is arranged on the rack; the first finish turning mechanism and the second finish turning mechanism respectively comprise a pressure belt component and a finish turning component; the first material moving mechanism and the first placing seat are positioned between the belt pressing component and the finish turning component of the first finish turning mechanism; the second material moving mechanism and the second placing seat are located between the belt pressing assembly and the finish turning assembly of the second finish turning mechanism. Therefore, the finish turning machine realizes automatic feeding, material moving and turning, and accelerates the processing efficiency; meanwhile, the rotor can be respectively turned in the forward direction and the reverse direction, the defect that the outer wall of the rotor commutator is not smooth enough due to unidirectional turning is avoided, the turning quality of the rotor is improved, and the product yield is improved.

Description

Bidirectional finish turning machine for rotor commutator

Technical Field

The utility model relates to the technical field of motor rotor machining, in particular to a bidirectional fine turning machine for a rotor commutator.

Background

The finish turning of the motor rotor commutator is an important process in the motor manufacturing process, the processing quality of the finish turning directly influences the concentricity and the surface smoothness of a rotor, and the finish turning has an extremely important effect on the improvement of the motor quality. If the concentricity of the rotor is poor, radial runout is easy to cause, and the noise of the motor is high and the abrasion of the electric brush is serious due to the rotor with the radial runout or the rotor with poor surface roughness. When a rotor commutator in the prior art carries out excircle finish turning, an independent finish turning tool is generally directly arranged on one side of the commutator, and the commutator is finished in the process of rotor rotation, so that on one hand, the finish turning tool can generate deviation in the long-term operation process, and the finish turning precision on the surface of the commutator generates errors, and the quality of a motor is influenced; the existing commutator finish turning is usually carried out in one direction only, and the turning surface is easy to be uneven, so that the product quality is influenced; in addition, the transfer and the transfer processes of the rotor are complex, the conveying time of the rotor is prolonged, and the overall processing efficiency of the rotor is reduced. Therefore, the existing rotor commutator finishing machine is improved to solve the problems.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a bidirectional fine turning machine for a rotor commutator, which realizes automatic feeding, moving and turning, and accelerates the processing efficiency; meanwhile, the rotor can be respectively turned in the forward direction and the reverse direction, the defect that the outer wall of the rotor commutator is not smooth enough due to unidirectional turning is avoided, the turning quality of the rotor is improved, and the product yield is improved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a bidirectional fine turning machine for a rotor commutator comprises a rack, a feeding and discharging mechanism, a first fine turning mechanism, a first placing seat, a second fine turning mechanism, a second placing seat, a first material moving mechanism and a second material moving mechanism, wherein the feeding and discharging mechanism is arranged on the rack and used for feeding and discharging a rotor, the first fine turning mechanism is used for carrying out forward fine turning on the rotor, the second fine turning mechanism is used for carrying out reverse fine turning on the rotor, the second placing seat is used for carrying out reverse fine turning on the rotor, the first material moving mechanism is used for transferring the rotor on the feeding and discharging mechanism to the first placing seat, and the second material moving mechanism is used for transferring the rotor on the first placing seat to the second placing seat; the first finish turning mechanism and the second finish turning mechanism respectively comprise a pressure belt component and a finish turning component; the first material moving mechanism and the first placing seat are positioned between the belt pressing component and the finish turning component of the first finish turning mechanism; the second material moving mechanism and the second placing seat are located between the belt pressing assembly and the finish turning assembly of the second finish turning mechanism.

As a preferred embodiment: the belt pressing assembly comprises a base, a pressing arm, a belt pulley group arranged on the pressing arm, a pressing arm rotation driving device and a belt pulley driving device, wherein the base is arranged on the rack; the rear end of the pressure arm is rotatably arranged on the base, and the output end of the pressure arm rotation driving device is connected with the rear end of the pressure arm; the belt wheel group comprises a driving belt wheel, a driven belt wheel and a transmission belt, the driving belt wheel and the driven belt wheel are rotatably distributed at the front end and the rear end of the pressure arm, the transmission belt is sleeved on the driving belt wheel and the driven belt wheel, and one side of the transmission belt is positioned at the outer side of the pressure arm when the transmission belt runs; the belt wheel driving device comprises a motor, wherein the motor is arranged on a base, and the output end of the motor is connected with a driving belt wheel.

As a preferred scheme: the rear end of the pressure arm is provided with a connecting plate, the pressure arm rotation driving device is an air cylinder, and the end of the air cylinder is hinged with the connecting plate.

As a preferred embodiment: the base is provided with a supporting table for mounting the pressure arm, and the belt wheel driving device also comprises a synchronous belt wheel set which comprises a driving wheel, a driven wheel and a synchronous belt; the motor is arranged on the side face of the support table, the driving wheel is arranged at the end of the motor shaft, the driven wheel is arranged on the front face of the support table and is coaxially connected with the driving belt wheel, and the driving wheel and the driven wheel are sleeved with the synchronous belt.

As a preferred scheme: the first material moving mechanism and the second material moving mechanism respectively comprise a base plate, a supporting plate lifting driving device, a sliding seat which can be installed on the supporting plate in a sliding mode, a material supporting assembly which is installed on the sliding seat, a sliding seat driving device which drives the sliding seat to slide and a material supporting driving device which is installed on the sliding seat and used for driving the material supporting assembly to rotate, the supporting plate is installed on the base plate in a lifting mode, the supporting plate lifting driving device is installed on the base plate, and the output end of the supporting plate lifting driving device is connected with the supporting plate; the sliding seat driving device is arranged at the end part of the supporting plate, and the output end of the sliding seat driving device is connected with the sliding seat; the material supporting component comprises a rotating rod and a plurality of material supporting blocks arranged on the rotating rod at intervals; the output end of the material supporting driving device is connected with the rotating rod.

As a preferred scheme: the plurality of material supporting blocks are respectively provided with accommodating grooves capable of adsorbing the rotor, are parallel to each other and have consistent orientation.

As a preferred embodiment: the material supporting driving device comprises a motor and a synchronous pulley set, the motor is installed on the sliding seat, the synchronous pulley set comprises a driving wheel, a driven wheel and a transmission belt, the driving wheel is installed at the end of the motor shaft, the driven wheel is installed on the rotating rod, and the transmission belt is sleeved on the driving wheel and the driven wheel.

As a preferred scheme: the supporting plate is provided with a guide rail, and the sliding seat can be arranged on the guide rail in a sliding manner; the sliding seat driving device is a cylinder, and the shaft end of the cylinder is connected with the sliding seat.

As a preferred embodiment: the first placing seat and the second placing seat respectively comprise a transfer support frame, a turning support frame and a rotor positioning piece, the transfer support frame and the turning support frame are arranged side by side, and placing grooves for placing rotors are respectively arranged on the transfer support frame and the turning support frame; the rotor positioning piece is provided with an abutting column which can abut against the end of the rotor shaft.

As a preferred embodiment: the fine turning assembly comprises a fine turning seat, a turning tool, a transverse driving assembly for driving the turning tool to transversely slide and a longitudinal driving assembly for driving the turning tool to longitudinally slide, and the turning tool is arranged on the output end of the transverse driving assembly; the longitudinal driving assembly is arranged on the sperm seat, and the output end of the longitudinal driving assembly is connected with the transverse driving assembly.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, and particularly, according to the technical scheme, the feeding and discharging mechanism, the two groups of finish turning mechanisms, the two groups of placing seats and the two groups of material moving mechanisms are integrated on the frame to form the finish turning machine which can respectively turn the rotor in the forward direction and the reverse direction, so that the defect that the outer wall of the rotor commutator is not smooth enough due to unidirectional turning is avoided; the finish turning machine realizes automatic feeding, material moving and turning, improves the turning quality of the rotor when accelerating the processing efficiency, and improves the product yield.

To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a perspective view of a finishing machine according to the present invention;

FIG. 2 is a schematic top view of the finishing machine of the present invention;

FIG. 3 is a perspective view of the present invention belt assembly;

FIG. 4 is a perspective view of another embodiment of the present invention;

FIG. 5 is a perspective view of the placement base of the present invention;

FIG. 6 is a perspective view of the material moving mechanism of the present invention;

FIG. 7 is a perspective view of another perspective of the material moving mechanism of the present invention;

FIG. 8 is a perspective view of the finishing block of the present invention.

The attached drawings indicate the following:

10. a frame; 11. a work table; 20. a feeding and discharging mechanism; 21. a conveying line; 22. a material transfer assembly; 221. a material clamping cylinder; 222. a transfer drive device; 223. a lifting drive part; 224. a longitudinal driving section; 225. a turnover driving cylinder; 30. a first finish turning mechanism; 31. a belt pressing assembly; 311. a base; 3111. a support table; 312. pressing the arm; 3121. a connecting plate; 313. a pulley group; 3131. a driving pulley; 3132. a driven pulley; 3133. a transmission belt; 314. a pressure arm rotation drive device; 315. a pulley drive; 3151. a motor; 3152. a synchronous pulley group; 32. finely turning the component; 321. a saddle for the sperm; 322. turning a tool; 323. a lateral drive assembly; 3231. a cylinder; 3232. a transverse sliding plate; 324. a longitudinal drive assembly; 3241. a motor; 3242. a screw rod; 3243. a longitudinal sliding panel; 40. a first placing seat; 41. transferring a support frame; 42. turning the support frame; 43. a rotor positioning member; 44. a placement groove; 50. a second finish turning mechanism; 60. a second placing seat; 70. a first material moving mechanism; 71. a substrate; 72. a support plate; 73. a supporting plate lifting driving device; 74. a sliding seat; 75. a material supporting component; 751. rotating the rod; 752. supporting a material head; 753. a containing groove; 76. a slide seat driving device; 77. a material supporting driving device; 771. a motor; 772. a synchronous pulley group; 78. a guide rail; 80. a second material moving mechanism; 90. a transfer seat; 100. and a rotor.

Detailed Description

As shown in fig. 1 to 8, the present invention provides a bidirectional fine turning machine for a rotor commutator, which comprises a frame 10, a feeding and discharging mechanism 20, a first fine turning mechanism 30, a first placing seat 40, a second fine turning mechanism 50, a second placing seat 60, a first material moving mechanism 70, and a second material moving mechanism 80, wherein:

the frame 10 has a table 11, and the above-described mechanisms are mounted on the table 11.

The feeding and discharging mechanism 20 is used for feeding and discharging the rotor, and comprises a conveying line 21 for conveying the rotor and a material transferring assembly 22 for transferring the rotor from the conveying line 21 to the first placing seat 40; the conveyor line 21 is in the form of a motor-driven conveyor belt; the material transfer assembly 22 comprises a material clamping cylinder 221 and a transfer driving device 222 for driving the material clamping cylinder 221 to ascend and descend and to move longitudinally, the transfer driving device 222 comprises a lifting driving part 223 and a longitudinal driving part 224, and the lifting driving part 223 and the longitudinal driving part 224 are both in a form that a motor is combined with a screw rod and a sliding block (the motor drives the screw rod to rotate, and the sliding block moves on the screw rod), or in a cylinder driving form; the output end of the longitudinal driving part 224 is connected with the lifting driving part 223, the material clamping cylinder 221 is rotatably installed at the output end of the lifting driving part 223, the output end of the lifting driving part 223 is provided with an overturning driving cylinder 225 which drives the material clamping cylinder 221 to rotate so as to adjust the clamped rotor from a vertical state to a horizontal state, and the shaft end of the overturning driving cylinder 225 is connected with the material clamping cylinder 221.

The first finish turning mechanism 30 is used for finish turning the rotor in the forward direction; the second finish turning mechanism 50 is used for performing reverse finish turning on the rotor which is subjected to forward finish turning again; the first finish turning mechanism 30 and the second finish turning mechanism 50 respectively comprise a ribbon assembly 31 and a finish turning assembly 32, and the first finish turning mechanism 30 is used for illustration;

the belt pressing assembly 31 includes a base 311, a pressing arm 312, a pulley set 313 mounted on the pressing arm 312, a pressing arm rotation driving device 314 and a pulley driving device 315, wherein the base 311 is mounted on the frame 10; the rear end of the pressing arm 312 is rotatably installed on the base 311, and the output end of the pressing arm rotation driving device 314 is connected to the rear end of the pressing arm 312; the pulley set 313 includes a driving pulley 3131, a driven pulley 3132 and a transmission belt 3133, the driving pulley 3131 and the driven pulley 3132 are rotatably distributed at the front and rear ends of the pressing arm 312, the transmission belt 3133 is sleeved on the driving pulley 3131 and the driven pulley 3132; and the belt 3133 is rotated with one side thereof positioned outside the pressing arm 312 to be in contact with the rotor; the pulley driving device 315 includes a motor 3151, the motor 3151 is mounted on the base 311, and the output end of the motor 3151 is connected to the driving pulley 3131. A connecting plate 3121 is provided at the rear end of the pressure arm 312, the pressure arm rotation driving device 314 is a cylinder, the shaft end of the cylinder is hinged to the connecting plate 3121, and the cylinder shaft is linked with the connecting plate 3121 to drive the pressure arm 312 to approach or leave the rotor. A support 3111 for mounting the pressure arm 312 is disposed on the base 311, and the pulley driving device 315 further includes a synchronous pulley set 3152, where the synchronous pulley set 3152 includes a driving pulley, a driven pulley, and a synchronous belt; the motor 3151 is mounted on the side of the support 3111, the driving wheel is mounted at the shaft end of the motor 3151, the driven wheel is mounted on the front of the support 3111 and is coaxially connected with the driving pulley 3131, and the synchronous belt is sleeved on the driving wheel and the driven wheel.

The finish turning assembly 32 comprises a finish turning seat 321, a turning tool 322, a transverse driving assembly 323 for driving the turning tool 322 to slide transversely, and a longitudinal driving assembly 324 for driving the turning tool 322 to slide longitudinally, wherein the turning tool 322 is arranged at the output end of the transverse driving assembly 323; the longitudinal driving unit 324 is mounted on the saddle 321, and its output end is connected to the transverse driving unit 323. The longitudinal driving assembly 324 comprises a motor 3241, a screw rod 3242 and a longitudinal sliding plate 3243, the motor 3241 is mounted on the fine vehicle seat 321, the longitudinal sliding plate 3243 can be longitudinally and slidably mounted on the fine vehicle seat 321, the screw rod 3242 is connected to the shaft end of the motor 3241 and rotatably matched with the longitudinal sliding plate 3243; the transverse driving assembly 323 comprises a cylinder 3231 and a transverse sliding plate 3232, the cylinder 3231 is mounted on the longitudinal sliding plate 3243, and the transverse sliding plate 3232 is transversely slidably mounted on the longitudinal sliding plate 3243 and is connected with the axial end of the cylinder 3231; the turning tool 322 is mounted to the front end of the traverse slide plate 3232.

The directions of the belt pressing assemblies 31 and the finishing assemblies 32 of the first finishing mechanism 30 and the second finishing mechanism 50 are opposite, and as shown in fig. 2, the distribution mode can avoid the defect of large occupied area caused by side arrangement.

The first placing seat 40 is used for placing a rotor to be subjected to forward finish turning; the second placing seat 50 is used for placing a rotor to be finish turned reversely, the first placing seat 40 and the second placing seat 50 respectively comprise a transfer support frame 41, a turning support frame 42 and a rotor positioning member 43, and the first placing seat 40 is used for illustration; the transfer support frame 41 and the turning support frame 42 are arranged side by side, and placing grooves 44 for placing rotors are respectively arranged on the transfer support frame 41 and the turning support frame 42; the rotor positioning element 43 is an abutting column which can abut against the end of the rotor shaft, one end of the abutting column is pointed, and the other end is cylindrical; the mounting direction of the abutting column can be changed to adapt to different rotor shaft ends.

The first material transferring mechanism 70 is used for transferring the rotor on the feeding and discharging mechanism 20 to the first placing seat 40; the second material transferring mechanism 80 is used for transferring the rotor on the first placing seat 40 to the second placing seat 60, and the first material transferring mechanism 70 and the second material transferring mechanism 80 respectively comprise a base plate 71, a supporting plate 72, a supporting plate lifting driving device 73, a sliding seat 74 slidably mounted on the supporting plate 72, a material supporting assembly 75 mounted on the sliding seat 74, a sliding seat driving device 76 driving the sliding seat 74 to slide, and a material supporting driving device 77 mounted on the sliding seat 74 and used for driving the material supporting assembly 75 to rotate, and the description is given by using the first material transferring mechanism 70; the supporting plate 72 is installed on the base plate 71 in a lifting manner, the supporting plate lifting driving device 73 (the supporting plate lifting driving device is an air cylinder) is installed on the base plate 71, and the output end of the supporting plate is connected with the supporting plate 72; the sliding seat driving device 76 is arranged at the end part of the supporting plate 72, and the output end of the sliding seat driving device is connected with the sliding seat 74; the material supporting assembly 75 comprises a rotating rod 751 and a plurality of supporting blocks 752 arranged on the rotating rod 751 at intervals; the output end of the supporting material driving device 77 is connected to the rotating rod 751. The plurality of material supporting blocks 752 are respectively provided with a containing groove 753 capable of magnetically adsorbing the rotor, and the plurality of material supporting blocks 752 are parallel to each other and have the same orientation. The material supporting driving device 77 comprises a motor 771 and a synchronous pulley set 772, the motor 771 is installed on the sliding seat 74, the synchronous pulley set 772 comprises a driving wheel, a driven wheel and a transmission belt, the driving wheel is installed at the end of the motor 771 shaft, the driven wheel is installed on a rotary rod 751, and the transmission belt is sleeved on the driving wheel and the driven wheel. The support plate 72 is provided with a guide rail 78, and the sliding seat 74 is slidably mounted on the guide rail 78; the sliding seat driving device is a cylinder, and the shaft end of the cylinder is connected with the sliding seat 74.

The first material moving mechanism 70 and the first placing seat 40 are positioned between the belt pressing assembly 31 and the finish turning assembly 32 of the first finish turning mechanism 30; the second material moving mechanism 80 and the second placing seat 60 are positioned between the belt pressing assembly 31 and the finish turning assembly 32 of the second finish turning mechanism 50. And a transfer seat 90 is provided beside the second placing seat 60, and the transfer seat 90 is used for placing the rotor 100 after the forward and reverse finish turning.

The first material moving mechanism 70 and the second material moving mechanism 80 have the following functions and working principles: the supporting block 752 can extend into the turning support frame 41 and the turning support frame 42 along with the rotation of the rotating rod 751 to complete the operations of placing the rotor 100 and supporting the rotor 100, the lifting function and the sliding function of the supporting block assembly 75 can drive the supporting block 752 to transfer the rotor 100 from the turning support frame 41 to the turning support frame 42 and transfer the rotor 100 that is turned in the forward direction from the turning support frame 42 of the first placing seat 40 to the turning support frame 41 of the second placing seat 60, and then transfer the rotor 100 on the turning support frame 41 of the second placing seat 60 to the turning support frame 42 of the second placing seat 60 for reverse turning; the reverse turned rotor 100 may also be transferred to the transfer block 90 waiting for the transfer of the clamping cylinder 221.

The working principle of the car polisher is as follows:

the finish turning machine is used for finish turning the commutator of the rotor; the material supporting block of the first material moving mechanism rotates along with the rotating rod to the transfer supporting frame; a material clamping cylinder of the material transfer component clamps a rotor to be turned over to be horizontal after clamping the rotor on the conveying line, and the material clamping cylinder is placed on a turning support frame of the first placing seat; the material supporting block of the first material moving mechanism is driven by the supporting plate lifting driving device to ascend and support the rotor, then the material supporting driving device drives the rotor to overturn outwards (the rotor is magnetically absorbed in the material supporting block), then the rotor is driven by the sliding seat driving device to slide to the position of the turning support frame, the material supporting block overturns and descends again to place the rotor on the turning support frame (the material supporting block overturns outwards in the opposite direction from the lower part of the turning support frame, and the rotor falls onto the turning support frame by falling off of the material supporting block under the blocking of the turning support frame to the rotor shaft); the rotor positioning piece is abutted against one end of the rotor shaft (a gap is formed between the end part of the rotor positioning piece and the end part of the rotor shaft, the putting-in of the rotor is not influenced), the pressing arm of the belt pressing assembly is pressed downwards, the driving belt rotates and is tightly attached to the rotor commutator to drive the rotor to rotate (the driving belt is slightly in inclined surface contact with the rotor, so that one end of the rotor shaft, which is in contact with the rotor positioning piece, is abutted against, and the rotor is positioned in the axial direction). The transverse driving component and the longitudinal driving component of the finish turning component drive the turning tool to contact with the commutator of the rotor, and the commutator starts to finish turning on the front surface under the driving of the belt pressing component; after finish turning, the first material moving mechanism moves the rotor subjected to forward finish turning to a transfer support frame of a second placing seat; the material supporting block of the second material moving mechanism turns over and enters the turning supporting frame of the second placing seat, and turns over outwards after supporting the rotor upwards, so that the rotor is moved into the turning supporting frame of the second placing seat; the second finish turning mechanism carries out reverse finish turning on the rotor, and after finish turning, the rotor is moved to the transfer seat and is transferred to the conveying line by the material transfer assembly to be discharged.

The utility model is mainly designed in that a feeding and discharging mechanism, two groups of finish turning mechanisms, two groups of placing seats and two groups of material moving mechanisms are integrated on a rack to form a finish turning machine, the finish turning machine can respectively turn the rotor in the forward direction and the reverse direction, and the defect that the outer wall of a rotor commutator is not smooth enough due to unidirectional turning is avoided; the finish turning machine realizes automatic feeding, material moving and turning, improves the turning quality of the rotor while improving the processing efficiency, and improves the product yield.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.

Claims

1. The utility model provides a two-way smart car machine for rotor commutator which characterized in that: the device comprises a rack, a feeding and discharging mechanism, a first finish turning mechanism, a first placing seat, a second finish turning mechanism, a second placing seat, a first material moving mechanism and a second material moving mechanism, wherein the feeding and discharging mechanism is arranged on the rack and used for feeding and discharging a rotor, the first finish turning mechanism is used for finish turning the rotor in a forward direction, the first placing seat is used for placing the finish turning to be performed in the forward direction, the second finish turning mechanism is used for finish turning the rotor in a reverse direction, the second placing seat is used for placing the finish turning to be performed in the reverse direction, the first material moving mechanism is used for transferring the rotor on the feeding and discharging mechanism to the first placing seat, and the second material moving mechanism is used for transferring the rotor on the first placing seat to the second placing seat; the first finish turning mechanism and the second finish turning mechanism respectively comprise a pressure belt component and a finish turning component; the first material moving mechanism and the first placing seat are positioned between the belt pressing assembly and the finish turning assembly of the first finish turning mechanism; the second material moving mechanism and the second placing seat are located between the belt pressing assembly and the finish turning assembly of the second finish turning mechanism.

2. The bidirectional car polisher for the rotor commutator of claim 1, wherein: the belt pressing assembly comprises a base, a pressing arm, a belt pulley group arranged on the pressing arm, a pressing arm rotation driving device and a belt pulley driving device, wherein the base is arranged on the rack; the rear end of the pressure arm is rotatably arranged on the base, and the output end of the pressure arm rotation driving device is connected with the rear end of the pressure arm; the belt wheel group comprises a driving belt wheel, a driven belt wheel and a transmission belt, the driving belt wheel and the driven belt wheel are rotatably distributed at the front end and the rear end of the pressure arm, the transmission belt is sleeved on the driving belt wheel and the driven belt wheel, and one side of the transmission belt is positioned at the outer side of the pressure arm when the transmission belt runs; the belt wheel driving device comprises a motor, wherein the motor is arranged on a base, and the output end of the motor is connected with a driving belt wheel.

3. The bidirectional fine turning machine for the rotor commutator of claim 2, wherein: the rear end of the pressure arm is provided with a connecting plate, the pressure arm rotation driving device is an air cylinder, and the end of the air cylinder is hinged with the connecting plate.

4. The bidirectional fine turning machine for the rotor commutator of claim 2, wherein: the belt wheel driving device also comprises a synchronous belt wheel set, and the synchronous belt wheel set comprises a driving wheel, a driven wheel and a synchronous belt; the motor is arranged on the side face of the support table, the driving wheel is arranged at the end of the motor shaft, the driven wheel is arranged on the front face of the support table and is coaxially connected with the driving belt wheel, and the driving wheel and the driven wheel are sleeved with the synchronous belt.

5. The bidirectional car polisher for the rotor commutator of claim 1, wherein: the first material moving mechanism and the second material moving mechanism respectively comprise a base plate, a supporting plate lifting driving device, a sliding seat which can be installed on the supporting plate in a sliding mode, a material supporting assembly which is installed on the sliding seat, a sliding seat driving device which drives the sliding seat to slide and a material supporting driving device which is installed on the sliding seat and used for driving the material supporting assembly to rotate, the supporting plate is installed on the base plate in a lifting mode, the supporting plate lifting driving device is installed on the base plate, and the output end of the supporting plate lifting driving device is connected with the supporting plate; the sliding seat driving device is arranged at the end part of the supporting plate, and the output end of the sliding seat driving device is connected with the sliding seat; the material supporting component comprises a rotating rod and a plurality of material supporting blocks arranged on the rotating rod at intervals; the output end of the material supporting driving device is connected with the rotating rod.

6. The bidirectional fine turning machine for the rotor commutator of claim 5, wherein: the plurality of material supporting blocks are respectively provided with accommodating grooves capable of adsorbing the rotor, are parallel to each other and have consistent orientation.

7. The bidirectional fine turning machine for the rotor commutator of claim 5, wherein: the material supporting driving device comprises a motor and a synchronous pulley group, the motor is arranged on a sliding seat, the synchronous pulley group comprises a driving wheel, a driven wheel and a transmission belt, the driving wheel is arranged at the end of the motor shaft, the driven wheel is arranged on a rotating rod, and the driving wheel and the driven wheel are sleeved with the transmission belt.

8. The bidirectional fine turning machine for the rotor commutator of claim 5, wherein: the supporting plate is provided with a guide rail, and the sliding seat can be arranged on the guide rail in a sliding manner; the sliding seat driving device is a cylinder, and the shaft end of the cylinder is connected with the sliding seat.

9. The bidirectional car polisher for the rotor commutator of claim 1, wherein: the first placing seat and the second placing seat respectively comprise a transfer support frame, a turning support frame and a rotor positioning piece, the transfer support frame and the turning support frame are arranged side by side, and placing grooves for placing rotors are respectively arranged on the transfer support frame and the turning support frame; the rotor positioning piece is provided with an abutting column which can abut against the end of the rotor shaft.

10. The bidirectional car polisher for the rotor commutator of claim 1, wherein: the fine turning assembly comprises a fine turning seat, a turning tool, a transverse driving assembly for driving the turning tool to transversely slide and a longitudinal driving assembly for driving the turning tool to longitudinally slide, and the turning tool is arranged on the output end of the transverse driving assembly; the longitudinal driving assembly is arranged on the sperm seat, and the output end of the longitudinal driving assembly is connected with the transverse driving assembly.