A dynamic balance detection device for a micro-motor rotor

Abstract

The present invention belongs to the technical field of dynamic balance detection of micro-motor rotors, and particularly relates to a dynamic balance detection device for a micro-motor rotor, which includes a base. Two carrier components are installed on the top of the base. The two carrier components can carry rotors with different shaft diameters and limit both ends of the shaft. Two driving components are installed on the top of the base, and the two carrier components are located between the two driving components. In the present invention, the two roller shafts in the carrier component can carry the rotor shafts with different diameters and lengths, and at the same time, the two clamping mechanisms can clamp the rotor shafts with different diameters and lengths. Then, by pressing down the shaft with the driving wheel and driving the shaft to rotate, the state of the rotor rotating on the stator can be simulated. Therefore, this device can drive rotors of multiple sizes, and thus can perform dynamic balance detection on the rotors in different types of micro-motors.

Description

Technical Field

[0001] The present invention relates to the technical field of dynamic balance detection of micro-motor rotors, and particularly to a device for detecting the dynamic balance of micro-motor rotors. Background Art

[0002] Currently, with the development of technology, the speed requirements for motors are getting higher and higher. As an important part of the mechanical system, the vibration caused by the unbalance of the rotor will lead to motor vibration, noise and mechanical damage. Therefore, the dynamic balance structure of high-speed motors and the dynamic balance debugging of rotors are key technologies. Some existing rotor dynamic balance detection devices can only be used to detect rotors of a single size. For this reason, a device for detecting the dynamic balance of micro-motor rotors is proposed. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies in the prior art and propose a device for detecting the dynamic balance of micro-motor rotors.

[0004] To achieve the above purpose, the present invention adopts the following technical solution: A device for detecting the dynamic balance of a micro-motor rotor includes a base. Two loading components are installed on the top of the base. The two loading components can load rotors with different shaft diameters and limit both ends of the rotating shaft. Two driving components are installed on the top of the base. The two loading components are located between the two driving components. The two driving components can press down the rotor shaft and drive it to rotate. A detection mechanism for detecting the jumping amplitude when the rotor shaft rotates is installed on the top of the base.

[0005] Preferably, the loading component includes a vertical plate fixedly installed on the top of the base. Two roller shafts are rotatably installed on the vertical plate. The two roller shafts are horizontally arranged. The same clamping mechanism is movably installed on the two roller shafts.

[0006] Preferably, the clamping mechanism includes a clamping plate. Two round holes are formed in the clamping plate. The two roller shafts respectively penetrate through the corresponding round holes and are in clearance fit with the inner walls of the corresponding round holes. Two guide rods are slidably installed through the clamping plate in a penetrating manner. Connecting plates and baffles are fixedly installed at both ends of the two guide rods. Both baffles are fixedly connected to the vertical plate. A first spring is slidably sleeved on the guide rod. The two ends of the first spring are respectively fixedly connected to the connecting plate and the clamping plate.

[0007] Preferably, a protruding blocking portion is provided on the top of the clamping plate. A plurality of matrix-distributed balls are rotatably installed in the blocking portion in an embedded manner.

[0008] Preferably, the driving component includes an L-shaped frame fixedly installed on the top of the base. A double-acting cylinder is fixedly installed on the top of the L-shaped frame. A driving mechanism is fixedly installed on the output rod of the double-acting cylinder. The driving mechanism is floatingly arranged.

[0009] Preferably, the driving mechanism includes a horizontal plate fixedly connected to the output rod of the double-axis cylinder, two round rods are fixedly installed on the bottom of the horizontal plate, and the bottom ends of the two round rods are fixedly installed with limit plates, and the driving assembly also includes a mounting plate, the two round rods pass through the mounting plate and are slidably connected to the mounting plate, a gearbox is fixedly installed on one side of the mounting plate, a driving motor is fixedly installed on the gearbox, the output end of the driving motor is fixedly connected to the input end of the gearbox, and a driving wheel is rotatably installed on the other side of the mounting plate, and the output end of the gearbox passes through the mounting plate and is fixedly connected to the driving wheel.

[0010] Preferably, the driving wheel and the two rollers below are distributed in an isosceles triangle.

[0011] Preferably, the sliding sleeve on the round rod is provided with a second spring, and the top end and the bottom end of the second spring are fixedly connected to the horizontal plate and the mounting plate respectively.

[0012] Preferably, the detection mechanism comprises a mounting bracket, the mounting bracket is detachably connected to the base, a micrometer is detachably mounted on the mounting bracket, a mounting frame is fixedly mounted on the probe end of the micrometer, and a roller is rotatably mounted on the mounting frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The two rollers in the supporting assembly of the present invention can support the rotor shafts of different diameters and lengths, and the two clamping mechanisms can clamp the rotor shafts of different diameters and lengths. Then, the driving wheel presses down the shaft and drives the shaft to rotate, so as to simulate the state of the rotor rotating on the stator. Therefore, the device can drive rotors of multiple sizes, so as to perform dynamic balance detection on the rotors of different types of micromotors.

[0015] 2. During the rotation of the rotor, the vibration amplitude of the rotor shaft is detected by the detection mechanism, so that the dynamic balance detection of the rotor can be completed according to the vibration amplitude of the shaft detected by the detection mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a micromotor rotor dynamic balance detection device proposed by the present invention;

[0017] Figure 2 A partial structural schematic diagram of a micromotor rotor dynamic balance detection device proposed by the present invention;

[0018] Figure 3 This is a structural schematic diagram of a supporting assembly in a micromotor rotor dynamic balancing detection device proposed by the present invention;

[0019] Figure 4 The structural schematic diagram of the clamping mechanism in a dynamic balance detection device for a micro-motor rotor proposed by the present invention;

[0020] Figure 5 The structural schematic diagram of the driving component in a dynamic balance detection device for a micro-motor rotor proposed by the present invention;

[0021] Figure 6 The structural schematic diagram of the driving mechanism in a dynamic balance detection device for a micro-motor rotor proposed by the present invention;

[0022] Figure 7 The structural schematic diagram of the detection mechanism in a dynamic balance detection device for a micro-motor rotor proposed by the present invention.

[0023] In the figure: 1. Base; 2. Loading component; 21. Vertical plate; 22. Roller shaft; 23. Clamping mechanism; 231. Clamping plate; 232. Round hole; 233. Blocking part; 234. Ball; 235. Guide rod; 236. Connecting plate; 237. First spring; 238. Baffle; 3. Driving component; 31. L-shaped frame; 32. Double-acting cylinder; 33. Driving mechanism; 331. Mounting plate; 332. Round rod; 333. Limiting plate; 334. Horizontal plate; 335. Second spring; 336. Gearbox; 337. Driving motor; 338. Driving wheel; 4. Detection mechanism; 41. Mounting bracket; 42. Dial indicator; 43. Roller. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-7 , the present invention provides a technical solution: a dynamic balance detection device for a micro-motor rotor, including a base 1, two loading components 2 are installed on the top of the base 1, the two loading components 2 can load rotors with different shaft diameters and limit both ends of the shaft, two driving components 3 are installed on the top of the base 1, the two loading components 2 are located between the two driving components 3, and the two driving components 3 can press down the rotor shaft and drive it to rotate, and a detection mechanism 4 for detecting the jumping amplitude when the rotor shaft rotates is installed on the top of the base 1.

[0026] The carrier assembly 2 includes a vertical plate 21 fixedly installed on the top of the base 1. Two roller shafts 22 are rotatably installed on the vertical plate 21. The two roller shafts 22 are horizontally arranged, and the same clamping mechanism 23 is movably installed on the two roller shafts 22.

[0027] Further, when detecting the rotor, the two ends of the rotating shaft are respectively placed on the corresponding two roller shafts 22, and the rotating shaft is located between the two roller shafts 22 and tangent to the two roller shafts 22. Then, during the rotation of the rotor rotating shaft, the four roller shafts 22 will rotate synchronously following the rotation of the rotating shaft.

[0028] The clamping mechanism 23 includes a clamping plate 231. Two circular holes 232 are formed in the clamping plate 231. The two roller shafts 22 respectively penetrate through the corresponding circular holes 232 and are in clearance fit with the inner walls of the corresponding circular holes 232. Two guide rods 235 are slidably installed through the clamping plate 231 in a penetrating manner. Connecting plates 236 and baffles 238 are fixedly installed at both ends of the two guide rods 235. The two baffles 238 are both fixedly connected to the vertical plate 21. A first spring 237 is slidably sleeved on the guide rod 235. The two ends of the first spring 237 are respectively fixedly connected to the connecting plate 236 and the clamping plate 231.

[0029] Further, when placing the motor rotating shaft on the four roller shafts 22, first, one end of the rotating shaft abuts against the corresponding blocking portion 233, and then the rotating shaft pushes the clamping plate 231 away from the other clamping plate 231 through the blocking portion 233. At this time, the moving clamping plate 231 will compress the corresponding two first springs 237. When the distance between the two clamping plates 231 continuously increases and is greater than the length of the motor rotating shaft, the other end of the rotating shaft can be placed on the corresponding two roller shafts 22, and it is ensured that the axis of the rotating shaft is flush with the axes of the four roller shafts 22. Then, slowly release the rotating shaft. Under the restoring elastic force of the two originally compressed first springs 237, the clamping plate 231 in contact with one end of the rotating shaft will be pushed closer to the other clamping plate 231. As the distance between the two clamping plates 231 continuously decreases, finally, the two clamping plates 231 can clamp both ends of the rotating shaft through the blocking portion 233 at the top.

[0030] A protruding blocking portion 233 is provided on the top of the clamping plate 231. A plurality of matrix - distributed balls 234 are rotatably installed in the blocking portion 233 in an embedded manner.

[0031] Further, due to the existence of a plurality of matrix - distributed balls 234, when the rotor rotating shaft contacts the blocking portion 233, it contacts the plurality of balls 234. Therefore, when the rotor rotating shaft rotates, the balls 234 in contact with the rotating shaft section will also rotate accordingly. Ensure that when the rotating shaft rotates, the two clamping plates 231 can maintain the clamping force on the rotating shaft through the corresponding blocking portion 233, and the rotating shaft can also rotate smoothly. Moreover, when the rotating shaft rotates, there is no sliding friction at the end, reducing the wear of the end of the rotating shaft.

[0032] The driving assembly 3 includes an L-shaped frame 31 fixedly installed on the top of the base 1. A double-shaft cylinder 32 is fixedly installed on the top of the L-shaped frame 31. A driving mechanism 33 is fixedly installed on the output rod of the double-shaft cylinder 32, and the driving mechanism 33 is floatingly arranged.

[0033] The driving mechanism 33 includes a cross plate 334 fixedly connected to the output rod of the double-shaft cylinder 32. Two round rods 332 are fixedly installed at the bottom of the cross plate 334. Limiting plates 333 are fixedly installed at the bottom ends of the two round rods 332. The driving assembly 3 further includes a mounting plate 331. The two round rods 332 penetrate through the mounting plate 331 and are slidably connected to the mounting plate 331. A gearbox 336 is fixedly installed on one side of the mounting plate 331. A driving motor 337 is fixedly installed on the gearbox 336. The output end of the driving motor 337 is fixedly connected to the input end of the gearbox 336. A driving wheel 338 is rotatably installed on the other side of the mounting plate 331. The output end of the gearbox 336 penetrates through the mounting plate 331 and is fixedly connected to the driving wheel 338.

[0034] Further, after both ends of the rotor rotating shaft placed on the four roller shafts 22 are respectively abutted by the corresponding clamping mechanisms 23, the two double-shaft cylinders 32 can be controlled to extend simultaneously. As the double-shaft cylinders 32 extend, the driving wheel 338 on the driving mechanism 33 will move downward and abut against the top of the rotor rotating shaft. After both positions near the two ends of the rotating shaft top are pressed by the driving wheels 338, the two driving motors 337 can be started. The driving motors 337 will drive the driving wheels 338 to rotate through the speed increase of the gearbox 336, and the rotation speed of the driving wheels 338 will be higher than the output rotation speed of the driving motors 337. When the driving wheels 338 rotate, they will drive the rotor rotating shaft to rotate. If the rotor jumps during the rotation process, the generated jump will cause the driving wheels 338 to float up and down.

[0035] The driving wheel 338 and the two lower roller shafts 22 are distributed in an isosceles triangle.

[0036] Further, since the driving wheel 338 and the two roller shafts 22 are distributed in an isosceles triangle, the stability of the rotating shaft can be ensured when the driving wheel 338 presses the rotor rotating shaft against the two roller shafts 22, ensuring that the rotating shaft will not be separated from the two roller shafts 22 and the driving wheel 338 during the rotation process.

[0037] A second spring 335 is slidably sleeved on the round rod 332. The top end and the bottom end of the second spring 335 are respectively fixedly connected to the cross plate 334 and the mounting plate 331.

[0038] Further, the two round rods 332 enable the mounting plate 331 to float up and down, ensuring that the runout generated during the rotation of the rotor shaft is not restricted. When the driving wheel 338 floats up and down following the shaft's runout, the two round rods 332 will undergo corresponding deformations to ensure that the driving wheel 338 can always tightly press against the top of the shaft, guaranteeing that the shaft will not disengage from between the two roller shafts 22 and the driving wheel 338.

[0039] The detection mechanism 4 includes a mounting bracket 41, which is detachably connected to the base 1. A dial indicator 42 is detachably mounted on the mounting bracket 41. An installation frame is fixedly mounted on the probe end of the dial indicator 42, and a roller 43 is rotatably mounted on the installation frame.

[0040] Further, after the two driving wheels 338 press down on the shaft, the angle of the mounting bracket 41 and the dial indicator 42 can be adjusted so that the roller 43 abuts against the shaft. Then, when the rotor shaft rotates, the roller 43 will rotate simultaneously with the shaft. If the rotor experiences runout, the relationship between the shaft and the roller 43 will change. At this time, the roller 43 will drive the telescoping of the probe on the dial indicator 42, thereby causing the pointer on the dial or the digital display content of the dial indicator 42 to change. Based on the change in the pointer on the dial or the digital display content of the dial indicator 42, the runout amplitude of the rotor can be viewed, and the dynamic balance detection can be completed based on the runout amplitude of the rotor.

[0041] In this embodiment: When detecting the rotor, the two ends of the shaft are respectively placed on the corresponding two roller shafts 22, and the shaft is located between the two roller shafts 22 and tangent to the two roller shafts 22. At the same time, the two clamping mechanisms 23 are made to abut against the two ends of the rotor shaft, thereby completing the clamping of the rotor shaft by the two clamping mechanisms 23. Then, the two double-acting cylinders 32 can be controlled to extend simultaneously. As the double-acting cylinders 32 extend, the driving wheels 338 on the driving mechanism 33 will move downward and press against the top of the rotor shaft. After the positions near the two ends of the shaft top are both pressed by the driving wheels 338, the two driving motors 337 can be started. The driving motors 337 will cause the driving wheels 338 to rotate through the speed increase of the gearbox 336, and the rotational speed of the driving wheels 338 will be higher than the output rotational speed of the driving motors 337. When the driving wheels 338 rotate, they will drive the rotor shaft to rotate. Then, during the rotation of the rotor shaft, the four roller shafts 22 will rotate synchronously with the rotation of the shaft. If the rotor experiences runout, the relationship between the shaft and the roller 43 will change. At this time, the roller 43 will drive the telescoping of the probe on the dial indicator 42, thereby causing the pointer on the dial or the digital display content of the dial indicator 42 to change. Based on the change in the pointer on the dial or the digital display content of the dial indicator 42, the runout amplitude of the rotor can be viewed, and the dynamic balance detection can be completed based on the runout amplitude of the rotor.

[0042] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention by making equivalent replacements or changes according to the technical solution and inventive concept of the present invention.

Claims

1. A dynamic balance detection device for a micro-motor rotor, characterized in that: It includes a base (1). Two carrier components (2) are installed on the top of the base (1). The two carrier components (2) can carry rotors with different shaft diameters and limit both ends of the shaft. Two driving components (3) are installed on the top of the base (1). The two carrier components (2) are located between the two driving components (3). The two driving components (3) can press down the rotor shaft and drive it to rotate. A detection mechanism (4) for detecting the runout amplitude during the rotation of the rotor shaft is installed on the top of the base (1). The carrier component (2) includes a vertical plate (21) fixedly installed on the top of the base (1). Two roller shafts (22) are rotatably installed on the vertical plate (21). The two roller shafts (22) are horizontally arranged. A clamping mechanism (23) is movably installed on the two roller shafts (22). The clamping mechanism (23) includes a clamping plate (231). Two circular holes (232) are formed in the clamping plate (231). The two roller shafts (22) respectively penetrate through the corresponding circular holes (232) and are in clearance fit with the inner walls of the corresponding circular holes (232). Two guide rods (235) are slidably installed through the clamping plate (231) in a penetrating manner. Connecting plates (236) and baffle plates (238) are fixedly installed at both ends of the two guide rods (235). The two baffle plates (238) are both fixedly connected to the vertical plate (21). A first spring (237) is slidably sleeved on the guide rod (235). The two ends of the first spring (237) are respectively fixedly connected to the connecting plate (236) and the clamping plate (231). A protruding blocking portion (233) is provided on the top of the clamping plate (231). A plurality of matrix-distributed balls (234) are rotatably installed in the blocking portion (233) in an embedded manner. The driving component (3) includes an L-shaped frame (31) fixedly installed on the top of the base (1). A double-acting cylinder (32) is fixedly installed on the top of the L-shaped frame (31). A driving mechanism (33) is fixedly installed on the output rod of the double-acting cylinder (32). The driving mechanism (33) is floatingly arranged. The driving mechanism (33) includes a horizontal plate (334) fixedly connected to the output rod of the double-acting cylinder (32). Two round rods (332) are fixedly installed at the bottom of the horizontal plate (334). Limit plates (333) are fixedly installed at the bottom ends of the two round rods (332). The driving component (3) further includes a mounting plate (331). The two round rods (332) respectively penetrate through the mounting plate (331) and are slidably connected to the mounting plate (331). A gearbox (336) is fixedly installed on one side of the mounting plate (331). A driving motor (337) is fixedly installed on the gearbox (336). The output end of the driving motor (337) is fixedly connected to the input end of the gearbox (336). A driving wheel (338) is rotatably installed on the other side of the mounting plate (331). The output end of the gearbox (336) penetrates through the mounting plate (331) and is fixedly connected to the driving wheel (338).

2. The dynamic balance detection device for a micro-motor rotor according to claim 1, wherein: The driving wheel (338) and the two lower roller shafts (22) are distributed in an isosceles triangle.

3. The dynamic balance detection device for a micro-motor rotor according to claim 1, wherein: A second spring (335) is slidably sleeved on the round rod (332), and the top end and the bottom end of the second spring (335) are fixedly connected to the cross plate (334) and the mounting plate (331) respectively.

4. A dynamic balance detection device for a micro-motor rotor according to claim 1, characterized in that: The detection mechanism (4) includes a mounting bracket (41), the mounting bracket (41) is detachably connected to the base (1), a dial indicator (42) is detachably mounted on the mounting bracket (41), a mounting frame is fixedly mounted on the probe end of the dial indicator (42), and a roller (43) is rotatably mounted on the mounting frame.

Images