Energy-saving AC servo motor noise reduction structure

Abstract

The utility model discloses an energy-saving AC servo motor noise reduction structure, and mainly relates to the technical field of motor noise reduction. Comprising a base and a noise reduction device, the noise reduction device is arranged at the top of the base, and the noise reduction device is arranged on the outer side of the servo motor in a surrounding mode and makes contact with a shell of the servo motor; the noise reduction device comprises a bottom plate, a side plate and an elastic piece, the bottom plate is arranged between the base and the servo motor and provides a supporting effect for the servo motor, the elastic piece is arranged between the bottom plate and the servo motor, the bottom of the side plate is connected with the bottom plate and the base, the elastic piece is arranged between the side plate and the servo motor, and the elastic piece plays a role in damping and noise reduction for the servo motor. The beneficial effects of the utility model lie in that the device plays a role in reducing the mechanical noise in the operation process of the servo motor through the noise reduction device, and the device can also play a role in stably fixing the servo motor while reducing the noise of the servo motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor noise reduction, in particular to an energy-saving AC servo motor noise reduction structure. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The noise of the motor is mainly divided into three types: electromagnetic noise, mechanical noise and aerodynamic noise. The motor generates a lot of noise during operation, which affects the mood of nearby workers and makes them irritable. Reducing the noise of the motor and ensuring the physical and mental health of the workers is a problem to be solved. The motor needs to be fixed during operation, and the motor moves by rotating the rotor. However, when the motor rotor speed reaches a certain level, the motor itself will vibrate. This causes the fixed position of the motor to generate noise due to the influence of the motor vibration. Therefore, how to prevent the generation of noise and stabilize the motor is a problem to be solved.

[0004] The servo motor is usually fixed with bolts. However, the bolts usually fix the servo motor so that the servo motor can be placed firmly. When the servo motor fails after running for a long time, the bolts need to be removed. Due to the fixed connection of the servo motor, the bolts are not easy to remove. Therefore, how to facilitate the disassembly of the servo motor is a problem to be solved.

[0005] In summary, how to stably fix the motor is a problem to be solved, how to prevent the motor from vibrating and causing mechanical noise due to the rotation of the rotor, and how to reduce the generation of mechanical noise is a problem to be solved. How to conveniently disassemble the servo motor when it fails is also a problem to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide an energy-saving AC servo motor noise reduction structure, which reduces the mechanical noise during the operation of the servo motor through a noise reduction device, and can also stably fix the servo motor while reducing the noise of the servo motor to prevent the output shaft of the servo motor from being on the same horizontal line due to the excessive amplitude of the servo motor. When disassembling the device, only the side plate and the fixing plate on one side need to be disassembled to remove the servo motor, and when disassembling the servo motor on one side, the bolts only need to be firmly fixed, because the vibration of the servo motor has little effect on the bolts, so the bolts do not need to be firmly fixed. Therefore, the bolts are easy to disassemble.

[0007] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] An energy-saving AC servo motor noise reduction structure includes a base and a noise reduction device. The top of the base is provided with a noise reduction device. The noise reduction device is arranged around the outside of the servo motor and contacts the outer shell of the servo motor. The noise reduction device includes a bottom plate, a side plate, and an elastic member. The bottom plate is arranged between the base and the servo motor to provide support for the servo motor. An elastic member is arranged between the bottom plate and the servo motor. The bottom of the side plate is connected to the bottom plate and the base respectively. An elastic member is arranged between the side plate and the servo motor. The elastic member plays a role of shock absorption and noise reduction for the servo motor. The elastic member is a spring. The noise reduction device includes a bottom plate, a side plate, and an elastic member. The bottom plate is arranged between the base and the servo motor to provide support for the servo motor and is also connected to the two side plates of the servo motor, so that the side plate and the bottom plate fix the servo motor together. An elastic member is arranged between the bottom plate and the servo motor. The role of the elastic member is to play a role of shock absorption, noise reduction and support for the servo motor. The servo motor can run stably, but the vibration direction of the servo motor caused by the rotor of the servo motor is uncertain during operation, that is, it vibrates in all directions. If only one bottom plate and elastic member are provided, the amplitude of the vibration of the servo motor on the left and right sides will be greater than the amplitude of the downward vibration, making it impossible to fix the servo motor well. Therefore, it is necessary to set side plates on both sides of the servo motor, and elastic members are also provided between the side plates and the servo motor, so that the side plates can fix the two sides of the servo motor and reduce the amplitude of the two sides of the servo motor.

[0009] The elastic members on the bottom plate are distributed in an array, one end of the elastic member is connected to the bottom plate, and the other end of the elastic member is in contact with the housing of the servo motor. The number of elastic members on the side plate is distributed such that the number at the front end of the servo motor is greater than that at the end. Since there is an output shaft at the front end of the servo motor, the output shaft of the servo motor will also drive the vibration of the servo motor when it rotates, thereby affecting the amplitude of the servo motor. Therefore, the number of elastic members on the side plate is unevenly distributed.

[0010] The noise reduction device also includes a fixing plate, which is arranged on the top of the servo motor. An elastic member is arranged between the fixing plate and the servo motor, and the fixing plate elastically fixes the servo motor through the elastic member. The noise reduction device also includes a fixing plate, and the fixing plate works together with the bottom plate to elastically fix the servo motor. Reduce the up and down vibration frequency of the servo motor. In order to better fix the servo motor.

[0011] A groove is provided on the top of the side panel, and a plurality of circular limit grooves are provided on the side of the groove away from the servo motor. The side panel is connected to the fixed plate by bolts, and the circular limit grooves play a clamping and supporting role for the bolts. A groove is provided on the top of the side panel, and a plurality of circular limit grooves are provided on the side of the groove principle servo motor. The side panel and the fixed plate are fixed by bolts because the bolts are located in the groove, and the long-term up and down vibration of the servo motor will cause the bolts to move up and down, so the circular limit grooves limit and fix the bolts to prevent the fixed plate from moving up due to the long-term vibration of the servo motor. The multiple circular limit grooves are provided here to facilitate the servo motor to provide different degrees of clamping and fixing.

[0012] The housing of the servo motor is provided with a groove, which is adapted to the elastic member and serves as a limit for the elastic member. The vibration of the servo motor will cause relative displacement of the position where the elastic member contacts the housing of the servo motor. Therefore, in order to ensure the fixity of the contact position between the elastic member and the servo motor, a plurality of grooves are provided on the housing of the servo motor. The grooves serve to limit the elastic member and prevent the vibration of the servo motor from causing displacement of the elastic member.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This device reduces the mechanical noise during the operation of the servo motor through the noise reduction device. In addition, this device can also stably fix the servo motor while reducing the noise of the servo motor to prevent the output shaft of the servo motor from being on the same horizontal line due to the excessive amplitude of the servo motor. When disassembling this device, you only need to disassemble the side plate and the fixing plate on one side to remove the servo motor. When disassembling the servo motor on one side, the bolts only need to be firmly fixed. Since the vibration of the servo motor has little effect on the bolts, the bolts do not need to be firmly fixed. Therefore, the bolts are easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Attached Figure 1 The utility model is a schematic diagram of a noise reduction structure of an energy-saving AC servo motor.

[0016] Attached Figure 2 It is a schematic diagram of the installation position of the elastic member in the utility model.

[0017] Attached Figure 3 This utility model is attached Figure 1 A partial enlarged view of .

[0018] Attached Figure 4 It is a schematic diagram of the position of the groove in the utility model.

[0019] Numbers shown in the accompanying drawings:

[0020] 1. Base; 2. Noise reduction device; 3. Bottom plate; 4. Side plate; 5. Elastic member; 6. Fixed plate; 7. Channel; 8. Circular limit groove; 9. Groove. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0022] The utility model discloses an energy-saving AC servo motor noise reduction structure, the main structure of which includes a base 1 and a noise reduction device 2. The base 1 is connected to the noise reduction device 2 to provide a support and limit platform for the servo motor and reduce the mechanical noise generated by the servo motor during operation. The base 1 is fixed to the shell, support frame, ground, etc. of the machine tool, so that the base 1 can provide stable support.

[0023] The noise reduction device 2 is arranged around the outside of the servo motor. The noise reduction device 2 contacts the outer shell of the servo motor to provide a support and limit function for the servo motor. The noise reduction device 2 includes a bottom plate 3, a side plate 4, and an elastic member 5. The bottom plate 3 is arranged between the base 1 and the servo motor. While providing a support function for the servo motor, it is also connected to the two side plates 4 of the servo motor, so that the side plates 4 and the bottom plate 3 can fix the servo motor together. An elastic member 5 is arranged between the bottom plate 3 and the servo motor. The function of the elastic member 5 is to provide a shock-absorbing, noise-reducing and supporting function for the servo motor. The servo motor can be operated stably, and during operation, the vibration direction of the servo motor caused by the rotor of the servo motor is uncertain, that is, it vibrates in all directions. If only one bottom plate 3 and elastic member 5 are provided, the amplitude of the vibration of the servo motor on the left and right sides will be greater than the amplitude of the downward vibration, so that the servo motor cannot be well fixed. Therefore, it is necessary to provide side plates 4 on both sides of the servo motor, and elastic members 5 are also provided between the side plates 4 and the servo motor, so that the side plates 4 can fix both sides of the servo motor and reduce the amplitude of the servo motor on both sides. The number of elastic members 5 on the side plates 4 is distributed so that the number at the front end of the servo motor is greater than that at the end. Because there is an output shaft at the front end of the servo motor, the output shaft of the servo motor will also drive the vibration of the servo motor when it rotates, thereby affecting the amplitude of the servo motor. Therefore, the number of elastic members 5 on the side plates 4 is unevenly distributed.

[0024] From the above, it can be known that after the servo motor is damped in three directions, the vibrations generated by each servo motor or the same servo motor at different rotation speeds are different due to the different rotation speeds of the servo motor when the servo motor is working. In order to better fix the servo motor, the servo motor can be stably fixed when the speed increases to prevent the left and right sides from being well fixed, while the servo motor cannot be limited or elastically clamped in the up and down directions because there is only one bottom plate 3 to support the servo motor, resulting in up and down floating. Therefore, the noise reduction device 2 also includes a fixed plate 6, and the fixed plate 6 works together with the bottom plate 3 to elastically fix the servo motor. Reduce the up and down vibration frequency of the servo motor. In order to better fix the servo motor, a groove 7 is provided on the top of the side plate 4, and a plurality of circular limit grooves 8 are provided on one side of the servo motor. The side plate 4 and the fixed plate 6 are fixed by bolts because the bolts are located in the groove 7, and the long-term up and down vibration of the servo motor will cause the bolts to move up and down, so the circular limit grooves 8 limit and fix the bolts to prevent the fixed plate 6 from moving up due to the long-term vibration of the servo motor. The multiple circular limit grooves 8 are provided here to facilitate different degrees of clamping and fixing of the servo motor. The compression degree of the elastic member 5 is different, providing a more stable fixation.

[0025] For different servo motors or servo motors with different vibration amplitudes, the required shock absorption of the elastic member 5 is different, that is, the clamping force of the elastic member 5 on the servo motor is different. Therefore, in order to better elastically clamp the servo motor, a gasket can be set when the side plate 4 and the bottom plate 3 are connected by bolts. The function of the gasket is to increase the distance between the side plate 4 and the outer shell of the servo motor, thereby adjusting the elastic force of the elastic member 5. The elastic member 5 here selects the most common spring for shock absorption and noise reduction. In order to more conveniently disassemble the servo motor and the side plate 4, the elastic member 5 is usually fixedly connected to the side plate 4, the bottom plate 3, and the fixed plate 6, and is in contact with the outer shell of the servo motor. This facilitates the disassembly of the servo motor. When in contact with the housing of the servo motor, the vibration of the servo motor will cause the position where the elastic member 5 of the servo motor housing contacts to be relatively displaced. Therefore, in order to ensure the fixity of the position where the elastic member 5 contacts the servo motor, a plurality of grooves 9 are provided on the housing of the servo motor. The function of the grooves 9 is to limit the elastic member 5 to prevent the vibration of the servo motor from causing displacement of the elastic member 5. The function of the grooves 9 on the housing of the servo motor is to limit the elastic member 5. Therefore, the grooves 9 on the housing of the servo motor can be replaced with bumps, etc., so as to limit the elastic member 5. However, when the grooves 9 on the housing are replaced with bumps, the elastic member 5 is not easy to be disassembled during the installation and replacement of the servo motor. Therefore, grooves 9 are provided on the housing of the servo motor to limit the elastic member 5.

[0026] When the side plate 4 is fixed, it is connected to the bottom plate 3. However, the vibration of the servo motor will also be indirectly transmitted to the side plate 4 through the elastic member 5, causing the side plate 4 and the base 1 to move relative to each other due to friction. Therefore, the side plate 4 needs to be fixedly connected to the base 1 so that the position of the side plate 4 is fixed. Then, the vibration of the servo motor will only cause the elastic member 5 to deform by compression, elongation, etc., so that the elastic member 5 plays a role in reducing vibration and noise for the servo motor.

[0027] Detailed instructions for use:

[0028] When the device is used, the bottom plate 3, the base 1 and a side plate 4 are first connected, and then the other side plate 4 is installed after the servo motor is placed in a suitable position. After the side plate 4 is installed, the fixing plate 6 is placed, and after the fixing plate 6 is compressed downward to a suitable position, the side plate 4 and the fixing plate 6 are fixed and limited by bolts. Finally, the side plate 4 is connected and fixed to the bottom plate 3, and the side plate 4 is connected and fixed to the base 1, so as to reduce the mechanical noise of the servo motor.

[0029] In summary, the device reduces the mechanical noise during the operation of the servo motor through the noise reduction device 2, and the device can also stably fix the servo motor while reducing the noise of the servo motor to prevent the output shaft of the servo motor from being on the same horizontal line due to the excessive amplitude of the servo motor. When disassembling the device, only the side plate 4 and the fixing plate 6 on one side need to be disassembled to remove the servo motor. When disassembling the servo motor on one side, the bolts only need to be firmly fixed, because the vibration of the servo motor has little effect on the bolts, so the bolts do not need to be firmly fixed. Therefore, the bolts are easy to disassemble.

Claims

1. An energy-saving AC servo motor noise reduction structure, characterized in that: It comprises a base (1) and a noise reduction device (2), wherein the top of the base (1) is provided with the noise reduction device (2), and the noise reduction device (2) is arranged around the outside of the servo motor and is in contact with the outer shell of the servo motor; The noise reduction device (2) comprises a bottom plate (3), a side plate (4), and an elastic member (5); the bottom plate (3) is arranged between the base (1) and the servo motor to provide support for the servo motor; an elastic member (5) is arranged between the bottom plate (3) and the servo motor; the bottom of the side plate (4) is respectively connected to the bottom plate (3) and the base (1); an elastic member (5) is arranged between the side plate (4) and the servo motor; the number of elastic members (5) on the side plate (4) is distributed such that the number at the front end of the servo motor is greater than that at the rear end; the elastic member (5) has a shock absorbing and noise reducing effect on the servo motor; The elastic members (5) on the bottom plate (3) are distributed in an array, one end of the elastic member (5) is connected to the bottom plate (3), and the other end of the elastic member (5) is in contact with the housing of the servo motor; The noise reduction device (2) further comprises a fixing plate (6), wherein the fixing plate (6) is arranged on the top of the servo motor, an elastic member (5) is arranged between the fixing plate (6) and the servo motor, and the fixing plate (6) elastically fixes the servo motor via the elastic member (5); A groove (7) is provided at the top of the side plate (4), and a plurality of circular limiting grooves (8) are provided on a side of the groove (7) away from the servo motor. The side plate (4) and the fixing plate (6) are connected by bolts, and the circular limiting grooves (8) play a clamping and supporting role for the bolts.

2. According to claim 1, an energy-saving AC servo motor noise reduction structure is characterized in that: A groove (9) is provided on the outer shell of the servo motor, and the groove (9) is matched with the elastic member (5) and plays a limiting role on the elastic member (5).

3. According to claim 2, an energy-saving AC servo motor noise reduction structure is characterized in that: The elastic member (5) is a spring.

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