Mechanical spindle air cooling device for spindle box

Abstract

The utility model relates to the technical field of spindle cooling, in particular to a mechanical spindle air cooling device for a spindle box, which comprises a spindle frame, a radiator mounted in the spindle frame, a cold air frame fixedly mounted at the upper end of the spindle frame, a plurality of vent holes formed in the upper surface of one end of the spindle frame, and a first air inlet formed in the upper surface of the other end of the spindle frame. A spindle motor is installed in the spindle frame, a cooling fan is installed at the upper end of the cold air frame, and a cooling liquid hole is formed in the upper end of the radiator. The cooling device has the beneficial effects that cooling liquid can be injected into the radiator through the cooling liquid hole, meanwhile, the cooling fan at the upper end of the cold air frame is started, air in the main shaft frame can be driven to flow after the cooling fan is started, airflow enters the main shaft frame from the first air inlet in one end of the main shaft frame and flows through the radiator, and the radiator is filled with the cooling liquid; and the heat is conveyed into the cold air frame through the ventilation holes so as to be drained to the outside, so that the heat productivity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of spindle cooling, specifically to a mechanical spindle air-cooling device for spindle boxes. Background Technology

[0002] As one of the core components of the equipment, the performance of the machine spindle directly affects the machining accuracy, efficiency and product quality. The spindle speed and torque determine the range of machinable materials and cutting ability, while the spindle rigidity and vibration resistance affect the surface finish and geometric accuracy of the workpiece. Thermal deformation of the spindle may lead to increased machining errors, so a good cooling system is needed to control the temperature.

[0003] In the prior art, since some small-sized mechanical spindles currently use ceramic ball bearings, which generate low heat, there is no need to equip them with a spindle cooling system. However, after long-term operation, the inner and outer rings of the bearings will still deform due to heat, resulting in a decrease in the spindle's accuracy and rigidity. To address this, this utility model proposes a mechanical spindle air-cooling device for spindle boxes to solve the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a mechanical spindle air-cooling device for a spindle box, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mechanical spindle air-cooling device for a spindle box, comprising: a spindle frame, a radiator installed inside the spindle frame, a cooling air frame fixedly installed at the upper end of the spindle frame, a plurality of ventilation holes opened on the upper surface of one end of the spindle frame, a first air inlet opened on the upper surface of the other end of the spindle frame, a spindle motor installed inside the spindle frame, a cooling fan installed at the upper end of the cooling air frame, and a coolant hole opened at the upper end of the radiator.

[0006] Preferably, the main shaft frame has a second air inlet on both the front and rear surfaces, and the two sets of second air inlets are in a square symmetrical structure. A third air inlet is provided on one side of the main shaft frame, and a fixing hole is fixedly provided above the third air inlet. An installation hole is provided on the upper surface of the main shaft frame.

[0007] Preferably, four sets of circumferentially spaced ventilation holes are provided around the mounting hole, and several first mounting screw holes are provided between the ventilation holes. Several second mounting screw holes are provided around the first mounting screw holes. The second mounting screw holes together form a square structure. A spindle motor is provided inside the mounting hole, and a mounting plate is fixedly installed on the outer surface of the spindle motor. The mounting plate is located directly above the mounting hole. Holes are provided at the corners of the mounting plate surface, and ventilation holes are attached to the lower end of the outer sidewall of the mounting plate.

[0008] Preferably, the cooling frame is a rectangular parallelepiped structure. A main spindle motor is installed inside the cooling frame. A support foot is fixedly installed at the bottom corner of the cooling frame. A hole is opened on the surface of the support foot, and a first mounting screw is installed in the hole. The first mounting screw passes through the mounting plate and is threadedly connected to the first mounting threaded hole. A gap is formed between the cooling frame, the support foot, the mounting plate and the outer wall surface of the main spindle motor. The gap is located directly above the four sets of ventilation holes. A sealing frame is fitted at the bottom of the cooling frame. A number of holes are opened on the surface of the sealing frame, and a second mounting screw is installed in the hole. The second mounting screw is threadedly connected to the second mounting threaded hole. The upper end of the sealing frame is in contact with the lower outer wall surface of the cooling frame.

[0009] Preferably, the cooling fan is installed on the upper inner wall of the cooling frame, and a protective net is provided directly above the cooling fan, with the protective net fixedly installed on the upper surface of the cooling frame.

[0010] Preferably, the radiator has an inner cavity, and the inner walls of the upper and lower ends of the radiator are fixedly connected to the outer ring surface of the spindle bearing. The inner cavity of the radiator and the outer wall of the spindle form a sealed space inside the radiator. One end of the coolant pipe is connected to the inner wall of the coolant hole on the upper surface of the radiator, and the other end of the coolant pipe is fixedly installed in the fixing hole on the side of one end of the spindle frame.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The mechanical spindle air-cooling device for the spindle box proposed in this utility model allows coolant to be injected into the radiator through the coolant hole during use. At the same time, the cooling fan at the top of the cooling fan frame is turned on. After the cooling fan is turned on, it will drive the airflow inside the spindle frame. The airflow will enter the spindle frame from the first air inlet at one end of the spindle frame. The airflow will flow through the radiator, which is filled with coolant, thereby quickly cooling and removing heat. The airflow will then be transported to the cooling fan frame through the ventilation hole and then discharged to the outside, thereby reducing the heat generation. This avoids the problem of the spindle bearing inner and outer rings deforming due to heat after long-term operation, which would lead to a decrease in spindle accuracy and rigidity. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic cross-sectional view of the structure of this utility model;

[0015] Figure 3 This is an exploded view of the overall outer frame of the present invention.

[0016] Figure 4 This is an exploded view of the internal structure of this utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the heat sink of this utility model.

[0018] In the diagram: 1. Spindle frame; 2. Radiator; 3. Cooling air frame; 4. Ventilation hole; 5. First air inlet; 6. Spindle motor; 7. Coolant hole; 8. Second air inlet; 9. Third air inlet; 10. Mounting hole; 11. Support foot; 12. First mounting screw; 13. Mounting plate; 14. Gap; 15. Cooling fan; 16. Protective net; 17. Inner cavity; 18. Coolant pipe; 19. Sealing frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: Please refer to Figures 1-5 This utility model provides a technical solution: a mechanical spindle air-cooling device for a spindle box, comprising: a spindle frame 1, a radiator 2 installed inside the spindle frame 1, a cooling air frame 3 fixedly installed on the upper end of the spindle frame 1, a plurality of ventilation holes 4 opened on the upper surface of one end of the spindle frame 1, a first air inlet 5 opened on the upper surface of the other end of the spindle frame 1, a spindle motor 6 installed inside the spindle frame 1, a cooling fan 15 installed on the upper end of the cooling air frame 3, and a coolant hole 7 opened on the upper end of the radiator 2;

[0021] During use, coolant can be injected into the radiator 2 through the coolant hole 7, and the cooling fan 15 at the top of the cooling frame 3 can be turned on at the same time. After the cooling fan 15 is turned on, it will drive the air flow inside the spindle frame 1. The airflow will enter the spindle frame 1 from the first air inlet 5 at one end of the spindle frame 1. The airflow will flow through the radiator 2, which is filled with coolant, thereby quickly cooling and removing heat. Then it will be delivered to the cooling frame 3 through the ventilation hole 4 and then discharged to the outside, thereby reducing the heat generation. This avoids the problem of the spindle bearing inner and outer rings deforming due to heat after long-term operation, which would lead to a decrease in spindle accuracy and rigidity.

[0022] Example 2: Based on Example 1, a radiator 2 is provided to prevent the inner and outer rings of the bearing from deforming due to heat. The radiator 2 has an inner cavity 17. The inner walls of the upper and lower ends of the radiator 2 are fixedly connected to the outer ring surface of the spindle bearing. The inner cavity 17 inside the radiator 2 and the outer wall of the spindle form a sealed space inside the radiator 2. One end of the coolant pipe 18 is connected to the inner wall of the coolant hole 7 on the upper surface of the radiator 2. The other end of the coolant pipe 18 is fixedly installed in the fixing hole on the side of one end of the spindle frame 1. The front and rear surfaces of the spindle frame 1 are provided with second air inlets 8. The two sets of second air inlets 8 are in a square symmetrical structure. A third air inlet 9 is provided on the side of one end of the spindle frame 1. A fixing hole is fixedly provided directly above the third air inlet 9. The upper surface of the spindle frame 1 is provided with mounting holes 10.

[0023] To prevent the inner and outer rings of the bearing from deforming due to heat after prolonged rotation, coolant can be injected into the inner cavity 17 of the radiator 2 through the coolant pipe 18 during use. The injected coolant is stored in the sealed space formed by the outer ring of the spindle bearing and the outer wall of the spindle in the inner cavity 17. Then, through the coordinated action of the first air inlet 5, the second air inlet 8 and the third air inlet 9, the heat exchange between the coolant and the outside air is accelerated, further improving the heat dissipation efficiency, while reducing the temperature of the spindle system, ensuring operational stability and extending the service life of the equipment.

[0024] Example 3: Based on Example 2, a cooling frame 3 is provided to improve overall heat dissipation efficiency. The cooling frame 3 has a rectangular structure and houses a spindle motor 6. A support foot 11 is fixedly installed at the bottom corner of the cooling frame 3. The surface of the support foot 11 has holes, and a first mounting screw 12 is installed in the holes. The first mounting screw 12 passes through the mounting plate 13 and is threadedly connected to the first mounting threaded hole. A gap 14 is formed between the cooling frame 3, the support foot 11, the mounting plate 13, and the outer wall surface of the spindle motor 6. The gap 14 is located directly above the four sets of ventilation holes 4. A sealing frame 19 is fitted at the bottom of the cooling frame 3. Several holes are opened on the surface of the sealing frame 19, and a second mounting screw is installed in the holes. The external thread of the second mounting screw is threadedly connected to the second mounting threaded hole. The upper end of the sealing frame 19 is attached to the lower outer wall surface of the cold air frame 3; the cooling fan 15 is installed on the upper inner wall of the cold air frame 3, and a protective net 16 is set directly above the cooling fan 15. The protective net 16 is fixedly installed on the upper surface of the cold air frame 3; four sets of circumferentially spaced ventilation holes 4 are opened around the mounting hole 10, and several first mounting screw holes are opened between the ventilation holes 4. Several second mounting screw holes are opened around the first mounting screw holes. The second mounting screw holes and the second mounting screw holes together form a square structure. A spindle motor 6 is installed in the mounting hole 10. A mounting plate 13 is fixedly installed on the outer surface of the spindle motor 6. The mounting plate 13 is located directly above the mounting hole 10. Holes are opened at the corners of the surface of the mounting plate 13. Ventilation holes 4 are attached to the lower end of the outer side wall of the mounting plate 13.

[0025] To improve overall heat dissipation efficiency, when the mechanical spindle rotates, the cooling fan 15 at the top of the cooling frame 3 is activated. Under the action of the cooling fan 15, airflow enters the spindle frame 1 through the first air inlet 5, the second air inlet 8, and the third air inlet 9. Under the action of the cooling fan 15, the airflow flows through the heat sink 2 for rapid heat exchange. At the same time, the airflow flows into the gap 14 inside the cooling frame 3 through the ventilation hole 4, thereby exhausting the airflow and forming an effective internal circulation air channel. This further reduces the temperature of the spindle and bearings, making the overall heat dissipation efficiency higher and preventing the decrease in accuracy or damage due to excessive temperature, thus ensuring the stable operation of the equipment for a long time.

[0026] In actual use, coolant can be injected into the radiator 2 through the coolant hole 7, and the cooling fan 15 at the top of the cooling frame 3 can be turned on at the same time. After the cooling fan 15 is turned on, it will drive the air flow inside the spindle frame 1. The airflow will enter the spindle frame 1 from the first air inlet 5 at one end of the spindle frame 1. The airflow will flow through the radiator 2, which is filled with coolant, thereby quickly cooling and removing heat. Then it will be delivered to the cooling frame 3 through the ventilation hole 4 and then guided to the outside, thereby reducing the heat generation. This avoids the problem of the spindle bearing inner and outer rings deforming due to heat after long-term operation, which would lead to a decrease in spindle accuracy and rigidity.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mechanical spindle air cooling device for a spindle head, comprising: A spindle frame (1) is provided, a radiator (2) is installed inside the spindle frame (1), and a cooling frame (3) is fixedly installed on the upper end of the spindle frame (1). The spindle frame (1) has several ventilation holes (4) on the upper surface of one end, a first air inlet (5) on the upper surface of the other end, a spindle motor (6) is installed inside the spindle frame (1), a cooling fan (15) is installed on the upper end of the cooling frame (3), and a coolant hole (7) is opened on the upper end of the radiator (2).

2. The mechanical spindle air cooling device for a spindle head according to claim 1, characterized in that: The main shaft frame (1) has a second air inlet (8) on both the front and rear surfaces. The two sets of second air inlets (8) are in a square symmetrical structure. A third air inlet (9) is opened on one side of the main shaft frame (1). A fixing hole is fixedly opened directly above the third air inlet (9). An installation hole (10) is opened on the upper surface of the main shaft frame (1).

3. The mechanical spindle air cooling device for spindle head according to claim 2, characterized in that: The mounting hole (10) is provided with four sets of circumferentially equidistant ventilation holes (4) around its periphery. Several first mounting screw holes are provided between the ventilation holes (4). Several second mounting screw holes are provided around the first mounting screw holes. The second mounting screw holes and the second mounting screw holes together form a square structure. A spindle motor (6) is provided inside the mounting hole (10). A mounting plate (13) is fixedly installed on the outer surface of the spindle motor (6). The mounting plate (13) is located directly above the mounting hole (10). Holes are provided at the corners of the surface of the mounting plate (13). Ventilation holes (4) are attached to the lower end of the outer sidewall of the mounting plate (13).

4. A mechanical spindle air-cooling device for a spindle box according to claim 1, characterized in that: The overall structure of the cold air frame (3) is a cuboid. A spindle motor (6) is installed inside the cold air frame (3). A support foot (11) is fixedly installed at the bottom corner of the cold air frame (3). A hole is opened on the surface of the support foot (11). A first mounting screw (12) is installed in the hole. The first mounting screw (12) passes through the mounting plate (13) and is threadedly connected to the first mounting threaded hole. A gap (14) is formed between the cold air frame (3), the support foot (11), the mounting plate (13) and the outer wall surface of the spindle motor (6). The gap (14) is located directly above the four sets of ventilation holes (4). A sealing frame (19) is fitted at the bottom of the cold air frame (3). Several holes are opened on the surface of the sealing frame (19). A second mounting screw is installed in the hole. The outer screw of the second mounting screw is threadedly connected to the second mounting screw hole. The upper end of the sealing frame (19) is in contact with the lower end of the outer wall surface of the cold air frame (3).

5. The mechanical spindle air cooling device for spindle head according to claim 1, characterized in that: The cooling fan (15) is installed on the upper inner wall of the cooling frame (3). A protective net (16) is provided directly above the cooling fan (15). The protective net (16) is fixedly installed on the upper surface of the cooling frame (3).

6. The mechanical spindle air cooling device for spindle head according to claim 1, characterized in that: The radiator (2) has an inner cavity (17) inside. The inner walls of the upper and lower ends of the radiator (2) are fixedly connected to the outer ring surface of the spindle bearing. The inner cavity (17) inside the radiator (2) and the outer wall of the spindle form a sealed space inside the radiator (2). The inner wall of the coolant hole (7) on the upper surface of the radiator (2) is connected to one end of the coolant pipe (18). The other end of the coolant pipe (18) is fixedly installed in the fixing hole on one side of the spindle frame (1).

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