A low-noise high-rigidity high-speed spindle motor

Abstract

The utility model discloses a low noise high rigidity high -speed main shaft motor, specifically related to high -speed main shaft motor technical field, including mounting panel, the fixed ring is fixedly connected to mounting panel lateral wall, the hollow column is fixedly connected to mounting panel other lateral wall, the rotating shaft is installed in the middle part of hollow column, a plurality of noise reduction subassembly are installed in the rotating shaft middle part, the noise reduction subassembly is located rotating shaft outer wall position, the protection subassembly is installed to mounting panel lateral wall, through being equipped with soundproof board, glass wool etc in the middle part of hollow column can realize soundproof board blocking cooperation glass wool absorbing noise etc multiple noise reduction effect when high -speed operation generates noise of rotating shaft, can reduce environmental noise fast, improve the work environment, avoid staff long -time work under high -noise environment, cause hearing damage problem.

Description

Technical Field

[0001] This utility model relates to the field of high-speed spindle motor technology, and more specifically, to a low-noise, high-rigidity high-speed spindle motor. Background Technology

[0002] High-speed spindle motors are high-speed, high-precision drive devices, typically reaching speeds of tens of thousands of revolutions per minute or even higher. They employ advanced bearing technology and cooling systems to ensure stable operation. Their main applications include CNC machine tools, PCB drilling machines, precision grinding equipment, and high-end manufacturing industries such as aerospace and medical devices. Their core advantages lie in high dynamic response, low vibration, and long lifespan, meeting the stringent speed and precision requirements of precision manufacturing.

[0003] Existing publication number CN114257022A discloses a low-noise spindle motor, including a spindle motor housing. A rotating base is fixedly connected to the upper surface of the spindle motor housing. A liquid storage bottle is inserted into and fixedly connected to the rotating base. The liquid storage bottle penetrates the upper surface of the spindle motor housing, and the penetrating end of the liquid storage bottle extends to a position above the drive shaft inside the spindle motor housing. A guide tube is inserted into the side wall of the liquid storage bottle. A support plate is fixedly connected to the top of the inside of the spindle motor housing. A damping plate and a rubber plate are fixedly connected to the side walls of the support plate. A noise reduction layer is adhered to the inner wall of the spindle motor housing. By twisting the liquid storage bottle, the lubricating liquid inside the bottle drips onto the surface of the drive shaft of the spindle motor, providing excellent lubrication, improving the smoothness of transmission, and reducing noise. The noise reduction layer refracts and blocks noise multiple times, effectively reducing noise and improving the comfort of the working environment. In the process of realizing this utility model, the inventors discovered the following problems with the existing technology:

[0004] Existing spindle motors, as the speed increases during use, generate vibration and noise due to the friction between the high-speed rotating rotor and the bearings, and the elastic deformation of the balls or raceways. Prolonged use can easily cause hearing damage and other problems for workers.

[0005] Therefore, a low-noise, high-rigidity high-speed spindle motor is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a low-noise, high-rigidity high-speed spindle motor to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-noise, high-rigidity high-speed spindle motor, comprising a mounting plate, wherein a fixing ring is fixedly connected to the side wall of the mounting plate; a hollow column is fixedly connected to the other side wall of the mounting plate; a rotating shaft is installed in the middle of the hollow column; a plurality of noise reduction components are installed in the middle of the rotating shaft; the noise reduction components are located on the outer wall of the rotating shaft; and a protective component is installed on the side wall of the mounting plate.

[0008] Preferably, the noise reduction component includes a support column; the support column is fixedly connected to the inner wall of the hollow column; a sound insulation plate is fixedly connected to the side wall of the support column; the sound insulation plate is located in the middle of the hollow column.

[0009] Preferably, a plurality of glass wool is adhered to the surface of the sound insulation board; the glass wool is located in the middle between the sound insulation board and the rotating shaft.

[0010] Preferably, the protective component includes a steel ring; the steel ring is located at the top of the mounting plate; the steel ring wraps around the surface of the mounting plate; the steel ring has multiple threaded holes in its center; multiple bolts are threaded into the center of the threaded holes; the steel ring is fixed to the surface of the mounting plate by bolts.

[0011] Preferably, a plurality of heat dissipation fins are fixedly attached to the surface of the hollow column; the heat dissipation fins are located in the middle of the steel ring.

[0012] Preferably, a fixing plate is fixedly connected to the top of the steel ring; a square plate is fixedly connected to the side wall of the fixing plate; a circular hole is opened in the middle of the square plate; and the rotating shaft is rotatably connected in the middle of the circular hole.

[0013] Preferably, a plurality of U-shaped rubber pads are fixedly connected to the side wall of the fixing plate; the U-shaped rubber pads are wrapped around the surface of the fixing plate.

[0014] Preferably, a sealing box is fixed to the side wall of one of the fixing plates; a power cord is installed in the middle of the sealing box.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. Compared with existing technologies, this low-noise, high-rigidity high-speed spindle motor has multiple noise reduction effects, such as sound insulation board and glass wool in the middle of the hollow column, which can block noise generated by the high-speed rotation of the shaft and absorb noise with glass wool. It can quickly reduce environmental noise, improve the working environment, and avoid the problem of hearing damage caused by workers working in high-noise environments for a long time.

[0017] 2. Compared with the existing technology, this low-noise, high-rigidity high-speed spindle motor achieves all-round safety barrier protection for the motor by setting up U-shaped rubber pads, fixing plates, steel rings, etc. First, the outer layer uses steel rings to block external impacts, dust and coolant corrosion with its rigidity. At the same time, it works with U-shaped rubber pads to absorb vibration energy, reduce the transmission of mechanical noise, and ensure stable operation of the equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the heat dissipation fins of this utility model.

[0020] Figure 3 This is a schematic diagram of the sound insulation panel of this utility model.

[0021] Figure 4 This is a schematic diagram of the steel ring structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the fixing plate of this utility model.

[0023] The attached diagram is labeled as follows: 1. Mounting plate; 11. Fixing ring; 12. Hollow column; 13. Rotating shaft; 14. Noise reduction component; 15. Protective component; 2. Support column; 21. Sound insulation board; 3. Glass wool; 4. Steel ring; 41. Threaded hole; 42. Bolt; 5. Heat dissipation fins; 6. Fixing plate; 61. Square plate; 62. Circular hole; 7. U-shaped rubber pad; 8. Sealing box; 81. Power cord. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] As attached Figures 1 to 5 The high-speed spindle motor with low noise and high rigidity shown includes a mounting plate 1, a fixing ring 11 fixed to the side wall of the mounting plate 1; a hollow column 12 fixed to the other side wall of the mounting plate 1; a rotating shaft 13 installed in the middle of the hollow column 12; a plurality of noise reduction components 14 installed in the middle of the rotating shaft 13; the noise reduction components 14 are located on the outer wall of the rotating shaft 13; and a protective component 15 is installed on the side wall of the mounting plate 1.

[0027] During operation, the protective components 15 are first installed at both ends of the mounting plate 1. The protective components 15 construct a physical barrier through their high strength characteristics to achieve multiple protections. Then, the spindle motor is started. At this time, the rotating shaft 13 rotates at high speed in the middle of the hollow column 12. The noise generated by the friction between the rotor and the bearing during rotation is isolated in the middle of the hollow column 12 by the protective components 15.

[0028] Example 2

[0029] Based on Example 1, the solution in Example 1 will be further described in detail below with reference to the specific working method, such as... Figures 1 to 5 As shown below, see details:

[0030] In a preferred embodiment, the noise reduction component 14 includes a support column 2; the sound insulation plate 21 is first fixed to the inner wall of the hollow column 12 via the support column 2; the support column 2 is fixedly connected to the inner side wall of the hollow column 12; when noise is generated in the middle of the hollow column 12, the support column 2 is a high-density board that uses mass inertia to block the transmission of sound waves; the sound insulation plate 21 is fixedly connected to the side wall of the support column 2; the sound insulation plate 21 is located in the middle of the hollow column 12; the support column 2 can cut off the noise propagation path and isolate it in the middle of the hollow column 12.

[0031] In a preferred embodiment, a plurality of glass wool 3 are fixedly attached to the surface of the sound insulation board 21. At this time, the glass wool 3, through its own porous fiber structure, reflects part of the sound waves when they are incident on the surface of the glass wool 3. The glass wool 3 is located in the middle of the sound insulation board 21 and the rotating shaft 13. Most of the sound waves enter the porous channels formed by the gaps between the glass wool 3 fibers, thereby achieving the effect of noise reduction.

[0032] In a preferred embodiment, the protective component 15 includes a steel ring 4; firstly, the steel ring 4 is placed at the end of the mounting plate 1; the steel ring 4 is located at the top of the mounting plate 1; then, bolts 42 are passed through threaded holes 41 to install it; the steel ring 4 wraps around the surface of the mounting plate 1; multiple threaded holes 41 are provided in the middle of the steel ring 4; during operation, the steel ring 4 can disperse the radial and axial forces generated when the motor is working through its own rigid structure; multiple bolts 42 are threadedly connected in the middle of the threaded holes 41; the steel ring 4 is fixed to the surface of the mounting plate 1 by bolts 42; thus mitigating the impact of external impacts on internal components.

[0033] In a preferred embodiment, a plurality of heat dissipation fins 5 are fixedly attached to the surface of the hollow column 12; the heat dissipation fins 5 accelerate the heat transfer in the middle of the hollow column 12 by increasing the heat dissipation area; the heat dissipation fins 5 are located in the middle of the steel ring 4; the heat dissipation fins 5 adopt a multi-sheet structure with parallel arrangement, which greatly increases the contact area with air and uses natural air convection to quickly dissipate heat to the outside of the hollow column 12.

[0034] In a preferred embodiment, a fixing plate 6 is fixedly attached to the top of the steel ring 4; the fixing plate 6 is installed on the surface of the mounting plate 1; a square plate 61 is fixedly attached to the side wall of the fixing plate 6; when the main spindle motor is working externally, the fixing plate 6 can keep the heat dissipation fins 5 at a certain distance from the ground by its own shape; a circular hole 62 is opened in the middle of the square plate 61; the rotating shaft 13 is rotatably connected in the middle of the circular hole 62; at the same time, the fixing plate 6 is made of rigid material, which can prevent the motor from being damaged by foreign objects.

[0035] In a preferred embodiment, a plurality of U-shaped rubber pads 7 are fixed to the side wall of the fixing plate 6; the U-shaped rubber pads 7 first contact the ground; the U-shaped rubber pads 7 wrap around the surface of the fixing plate 6; the U-shaped rubber pads 7 can protect the fixing plate 6 from being scratched by the ground through their own structure, and at the same time, when the spindle motor is working, the U-shaped rubber pads 7 can reduce vibration through their own deformation.

[0036] In a preferred embodiment, a sealing box 8 is fixed to the side wall of one of the fixing plates 6; firstly, the power cord 81 is connected to the power supply equipment; the power cord 81 is installed in the middle of the sealing box 8; the sealing box 8 can form a seal at the end of the power cord 81 to prevent dust, liquids, etc. from entering its middle.

[0037] In this embodiment, glass wool 3, power cord 81, etc. are all commercially available devices known to those skilled in the art. They can be customized or selected according to actual needs. Here we are just using them without making any structural or functional improvements, so we will not go into detail here.

[0038] The working process of this utility model is as follows: First, the power cord 81 is connected to the power supply equipment. At this time, the sealing box 8 can form a seal at the end of the power cord 81 to prevent dust, liquids, etc. from entering the middle. Then, the protective component 15 is installed at both ends of the mounting plate 1. The protective component 15 constructs a physical barrier through its own high strength characteristics to achieve multiple protections. Then, the spindle motor is started. At this time, the rotating shaft 13 rotates at high speed in the middle of the hollow column 12. At this time, the noise generated by the friction between the rotor and the bearing during rotation is isolated in the middle of the hollow column 12 by the protective component 15. When noise is generated in the middle of the hollow column 12, the support column 2 is made of high-density board and uses mass inertia to block the transmission of sound waves. The support column 2 can cut off the noise propagation path. At the same time, in conjunction with the glass wool 3, through its own porous fiber structure, when the sound waves are incident on the surface of the glass wool 3, some of the sound waves are reflected by the surface layer of the glass wool 3, and most of them are blocked. The glass wool 3 fibers then enter the porous channels formed by the gaps between the fibers, thereby achieving a noise reduction effect. Subsequently, the steel ring 4 is placed at the end of the mounting plate 1, and the bolt 42 is installed through the threaded hole 41. During operation, the steel ring 4 can disperse the radial and axial forces generated during motor operation through its own rigid structure, thus mitigating the impact of external impacts on internal components. The heat dissipation fins 5 accelerate the heat transfer in the middle of the hollow column 12 by increasing the heat dissipation area. At the same time, the fixing plate 6 can keep the heat dissipation fins 5 at a certain distance from the ground through its own shape, without affecting its heat dissipation effect. When the fixing plate 6 is grounded, the U-shaped rubber pad 7 contacts the ground first. The U-shaped rubber pad 7 can protect the fixing plate 6 from being scratched by the ground through its own structure. At the same time, when the spindle motor is working, the U-shaped rubber pad 7 can reduce vibration through its own deformation. The above is the working principle of this low-noise, high-rigidity, high-speed spindle motor.

Claims

1. A low-noise, high-rigidity high-speed spindle motor, comprising a mounting plate (1), characterized in that: A fixing ring (11) is fixed to the side wall of the mounting plate (1); a hollow column (12) is fixed to the other side wall of the mounting plate (1); a rotating shaft (13) is installed in the middle of the hollow column (12); a plurality of noise reduction components (14) are installed in the middle of the rotating shaft (13); the noise reduction components (14) are located on the outer wall of the rotating shaft (13); a protective component (15) is installed on the side wall of the mounting plate (1).

2. The low-noise, high-rigidity high-speed spindle motor according to claim 1, characterized in that: The noise reduction component (14) includes a support column (2); the support column (2) is fixedly connected to the inner wall of the hollow column (12); a sound insulation plate (21) is fixedly connected to the side wall of the support column (2); the sound insulation plate (21) is located in the middle of the hollow column (12).

3. The low-noise, high-rigidity high-speed spindle motor according to claim 2, characterized in that: Multiple glass wool (3) are bonded to the surface of the sound insulation board (21); the glass wool (3) is located in the middle between the sound insulation board (21) and the rotating shaft (13).

4. The low-noise, high-rigidity high-speed spindle motor according to claim 1, characterized in that: The protective component (15) includes a steel ring (4); the steel ring (4) is located at the top of the mounting plate (1); the steel ring (4) is wrapped around the surface of the mounting plate (1); the steel ring (4) has multiple threaded holes (41) in the middle; multiple bolts (42) are threadedly connected to the middle of the threaded holes (41); the steel ring (4) is fixed to the surface of the mounting plate (1) by bolts (42).

5. A low-noise, high-rigidity high-speed spindle motor according to claim 4, characterized in that: Multiple heat dissipation fins (5) are fixed to the surface of the hollow column (12); the heat dissipation fins (5) are located in the middle of the steel ring (4).

6. A low-noise, high-rigidity high-speed spindle motor according to claim 5, characterized in that: A fixing plate (6) is fixedly connected to the top of the steel ring (4); a square plate (61) is fixedly connected to the side wall of the fixing plate (6); a circular hole (62) is opened in the middle of the square plate (61); and the rotating shaft (13) is rotatably connected in the middle of the circular hole (62).

7. A low-noise, high-rigidity high-speed spindle motor according to claim 6, characterized in that: The side wall of the fixing plate (6) is fixed with a plurality of U-shaped rubber pads (7); the U-shaped rubber pads (7) are wrapped around the surface of the fixing plate (6).

8. A low-noise, high-rigidity high-speed spindle motor according to claim 7, characterized in that: One of the fixing plates (6) has a sealing box (8) fixed to its side wall; a power cord (81) is installed in the middle of the sealing box (8).

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