Electric spindle with circulating cooling function

Abstract

The utility model relates to the field of machine tool spindles, and discloses an electric spindle with a circulating cooling function, which comprises a shell, a shaft sleeve is fixedly connected to the outer wall of the shell, radiating fins are fixedly connected to the outer wall of the shell, radiating holes are formed in the shell, a cooling groove is formed in the shell, and the shaft sleeve is fixedly connected to the outer wall of the shell. A cooling pipe is fixedly connected to the interior of the shell, a pump body is fixedly connected to the outer wall of the cooling pipe, a feeding pipe is fixedly connected to the input end of the pump body, a discharging pipe is fixedly connected to the output end of the pump body, a heat dissipation assembly is arranged in the shell, and the heat dissipation assembly is used for cooling the interior of the shell. According to the cooling device, cooling liquid is pumped into the cooling pipe from the feeding pipe through the pump body to flow and is discharged through the discharging pipe to form circulation, the motor is started to drive the fan blades to rotate, and the cooling fins and the cooling holes of the shell are combined, so that internal circulation cooling and external cooling are achieved.

Description

Technical Field

[0001] The utility model relates to the field of machine tool spindles, in particular to an electric spindle with a circulating cooling function. Background Art

[0002] The electric spindle with circulating cooling function is a key component used in machining equipment, mainly used for cooling and temperature management during high-speed rotation. This type of electric spindle is usually equipped with a built-in cooling system, which controls the working temperature of the electric spindle through circulating coolant (such as water or specific cooling liquid) to prevent overheating caused by friction and heat accumulation. The circulating cooling function can effectively improve the service life and stability of the electric spindle, while ensuring the accuracy and efficiency of the machining process.

[0003] In the prior art, most electric spindles are cooled only by external water tanks and other structures, but the effect of circulating cooling cannot be achieved. Some electric spindles are cooled by spraying water through the nozzles on the CNC lathes, but the single structure cannot fully achieve the effect of circulating cooling.

[0004] With regard to the structure of the prior art, the effect of circulating cooling cannot be fully achieved by only spraying water on the outside for cooling. In addition, the internal temperature of the electric spindle will also be high during operation and needs to be cooled. The cooling of the outer wall alone cannot completely reduce the internal temperature, thus affecting the use of the electric spindle. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an electric spindle with a circulation cooling function, aiming to improve the effect of internal and external circulation cooling of the electric spindle in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric spindle with a circulating cooling function, comprising a shell, an outer wall of the shell is fixedly connected to a shaft sleeve, an outer wall of the shell is fixedly connected to a heat sink, a heat dissipation hole is provided inside the shell, a cooling groove is provided inside the shell, a cooling pipe is fixedly connected inside the shell, the outer wall of the cooling pipe is fixedly connected to a pump body, an input end of the pump body is fixedly connected to a feed pipe, an output end of the pump body is fixedly connected to a discharge pipe, a heat dissipation component is arranged inside the shell, and the heat dissipation component is used to cool the interior of the shell.

[0007] Furthermore, the heat dissipation component includes a motor, the motor is fixedly connected to the inside of the housing, and the output end of the motor is fixedly connected to a fan blade.

[0008] Furthermore, a main shaft body is fixedly connected to the interior of the shell, and a shaft end plate is fixedly connected to the outer wall of the main shaft body.

[0009] Furthermore, a water tank is provided inside the main shaft body, a first water pump is fixedly connected inside the shaft sleeve, an output end of the first water pump is fixedly connected to a first water pipe, and an outer wall of the first water pipe is fixedly connected to a first connecting pipe.

[0010] Furthermore, the first connecting tube is fixedly connected to the interior of the shaft end plate, and the first connecting tube is arranged to penetrate the interior of the shaft end plate and the main shaft body.

[0011] Furthermore, a second water pump is fixedly connected to the interior of the shaft sleeve, and a second water pipe is fixedly connected to an input end of the second water pump.

[0012] Furthermore, a second connecting pipe is fixedly connected to the outer wall of the second water delivery pipe, and the second connecting pipe is fixedly connected to the inside of the shaft end plate.

[0013] Furthermore, the second connecting pipe is arranged to penetrate the interior of the shaft end plate and the main shaft body, and a vent hole is opened inside the outer shell.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the coolant is pumped into the interior of the cooling tube through the feed pipe by the pump body, the coolant flows inside the cooling tube, and is discharged through the pump body and the discharge pipe to form a cycle, and then the motor is started to drive the fan blades to rotate, combined with the heat sink outside the shell and the heat dissipation holes, so that the interior of the shell can be circulated and cooled, and the outside can also be cooled.

[0016] 2. In the utility model, the input end of the first water pump and the output end of the second water pump are connected to the water tank, and the water is pumped into the first water pipe through the first water pump, and then enters the water tank inside the main shaft body through the first connecting pipe. The water flows inside the water tank, and the water inside the water tank is pumped out again through the second water pump combined with the second water pipe and the second connecting pipe, so as to achieve the effect of circulating cooling on the inside of the main shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an electric spindle with a circulating cooling function proposed by the utility model;

[0018] Figure 2 This is a schematic cross-sectional view of a housing of an electric spindle with a circulating cooling function proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the heat sink structure of an electric spindle with a circulating cooling function proposed by the utility model;

[0020] Figure 4The utility model discloses a spindle structure schematic diagram of an electric spindle with a circulating cooling function.

[0021] Legend:

[0022] 1. Outer shell; 2. Bushing; 3. Heat sink; 4. Heat dissipation hole; 5. Cooling trough; 6. Cooling pipe; 7. Feed pipe; 8. Discharge pipe; 9. Pump body; 10. Motor; 11. Fan blade; 12. Main shaft body; 13. Shaft end plate; 14. Water tank; 15. First water pump; 16. First water pipe; 17. First connecting pipe; 18. Second water pump; 19. Second water pipe; 20. Second connecting pipe; 21. Vent hole. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: an electric spindle with a circulating cooling function, comprising a shell 1, a shaft sleeve 2 is fixedly connected to the outer wall of the shell 1, a heat sink 3 is fixedly connected to the outer wall of the shell 1, a heat dissipation hole 4 is opened inside the shell 1, a cooling groove 5 is opened inside the shell 1, a cooling pipe 6 is fixedly connected inside the shell 1, a pump body 9 is fixedly connected to the outer wall of the cooling pipe 6, a feed pipe 7 is fixedly connected to the input end of the pump body 9, a discharge pipe 8 is fixedly connected to the output end of the pump body 9, a heat dissipation component is arranged inside the shell 1, the heat dissipation component is used to cool down the inside of the shell 1, and the heat dissipation component comprises a motor 10, the motor 10 is fixedly connected to the inside of the shell 1, and a fan blade 11 is fixedly connected to the output end of the motor 10;

[0025] Specifically, the feed pipe 7 and the discharge pipe 8 are respectively connected to the inside of the coolant storage box, the pump body 9 is started to draw the coolant into the inside of the pump body 9 through the feed pipe 7, and then transported to the inside of the cooling pipe 6, and the coolant in the cooling pipe 6 is then drawn out by the pump body 9 and transported back to the coolant storage box through the discharge pipe 8, thereby forming a circulation, and the cooling pipe 6 is spirally arranged between the cooling grooves 5 inside the outer shell 1, so that the inside of the outer shell 1 can be circulated and cooled through the cooling grooves 5, and the cold air is discharged and circulated through the heat dissipation holes 4 or enters the inside of the outer shell 1 to cool the outer wall of the spindle body 12, thereby achieving the effect of automatic circulation cooling.

[0026] Reference Figure 1, Figure 2 and Figure 4 The main shaft body 12 is fixedly connected to the inside of the housing 1, the outer wall of the main shaft body 12 is fixedly connected to the shaft end plate 13, the main shaft body 12 is provided with a water tank 14, the inside of the shaft sleeve 2 is fixedly connected to the first water pump 15, the output end of the first water pump 15 is fixedly connected to the first water pipe 16, the outer wall of the first water pipe 16 is fixedly connected to the first connecting pipe 17, the first connecting pipe 17 is fixedly connected to the inside of the shaft end plate 13, and the first connecting pipe 17 is arranged through the inside of the shaft end plate 13 and the main shaft body 12;

[0027] Specifically, the input end of the first water pump 15 is connected to the water tank, and the first water pump 15 is started to pump water into the interior of the first water pump 15 and transport it to the first water pipe 16, and then transport it into the first connecting pipe 17 through the first water pipe 16, and then transport it to the interior of the main shaft body 12 through the first connecting pipe 17, so that the interior of the main shaft body 12 is cooled by adding water to achieve a cooling effect.

[0028] Reference Figure 1 and Figure 4 The shaft sleeve 2 is fixedly connected to a second water pump 18, the input end of the second water pump 18 is fixedly connected to a second water pipe 19, the outer wall of the second water pipe 19 is fixedly connected to a second connecting pipe 20, the second connecting pipe 20 is fixedly connected to the inside of the shaft end plate 13, the second connecting pipe 20 is arranged to penetrate the inside of the shaft end plate 13 and the main shaft body 12, and a vent hole 21 is opened inside the housing 1;

[0029] Specifically, the output end of the second water pump 18 is connected to the water tank, and the second water pump 18 is started to pump out the water inside the main shaft body 12 through the second connecting pipe 20 and pump it back into the second water pump 18 through the second water pipe 19, and then transport it back to the water tank through the output end of the second water pump 18, so that the water circulates inside the main shaft body 12, and also achieves the effect of circulating cooling inside the main shaft body 12. The vent 21 can dissipate heat and cool the inside of the outer shell 1, thereby playing an auxiliary cooling effect.

[0030] Working principle: When the electric spindle needs to be circulated and cooled, first connect the feed pipe 7 and the discharge pipe 8 to the inside of the cooling box, start the pump body 9 to draw the coolant inside the cooling box through the feed pipe 7 into the inside of the pump body 9, and then transport it into the inside of the cooling pipe 6. The coolant flows inside the cooling pipe 6 and cools the inside of the shell 1. Then, the coolant inside the cooling pipe 6 is drawn out by the pump body 9 and returned to the cooling box through the discharge pipe 8, so that the coolant circulates inside the cooling pipe 6, further achieving the effect of circulating and cooling the inside of the shell 1. Then, the fan blade 11 is driven to rotate by starting the motor 10 and combined with multiple The heat dissipation holes 4 and the air vents 21 can cool the outer wall of the main shaft body 12. The input end of the first water pump 15 and the output end of the second water pump 18 are connected to the inside of the water tank. The first water pump 15 is started to pump out water and transport it to the inside of the first water pipe 16, and then transport it to the inside of the main shaft body 12 through the first connecting pipe 17. The water enters the inside of the water tank 14 and flows. The second water pump 18 is started to pump out the water inside the main shaft body 12 through the second connecting pipe 20 and transport it back to the inside of the second water pump 18 through the second water pipe 19 and then back to the water tank. In this way, water circulation is achieved and the inside of the main shaft body 12 is cooled.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric spindle with a circulating cooling function, comprising a housing (1), characterized in that: The outer wall of the shell (1) is fixedly connected to a shaft sleeve (2), the outer wall of the shell (1) is fixedly connected to a heat sink (3), the interior of the shell (1) is provided with a heat dissipation hole (4), the interior of the shell (1) is provided with a cooling groove (5), the interior of the shell (1) is fixedly connected to a cooling pipe (6), the outer wall of the cooling pipe (6) is fixedly connected to a pump body (9), the input end of the pump body (9) is fixedly connected to a feed pipe (7), the output end of the pump body (9) is fixedly connected to a discharge pipe (8), and a heat dissipation component is arranged inside the shell (1), and the heat dissipation component is used to cool the interior of the shell (1).

2. The electric spindle with circulating cooling function according to claim 1, characterized in that: The heat dissipation assembly comprises a motor (10), the motor (10) is fixedly connected to the inside of the housing (1), and a fan blade (11) is fixedly connected to the output end of the motor (10).

3. The electric spindle with circulating cooling function according to claim 1 is characterized in that: A main shaft body (12) is fixedly connected to the interior of the housing (1), and an outer wall of the main shaft body (12) is fixedly connected to an axis end plate (13).

4. The electric spindle with circulating cooling function according to claim 3 is characterized in that: A water tank (14) is provided inside the main shaft body (12); a first water pump (15) is fixedly connected inside the shaft sleeve (2); an output end of the first water pump (15) is fixedly connected to a first water pipe (16); and an outer wall of the first water pipe (16) is fixedly connected to a first connecting pipe (17).

5. The electric spindle with circulating cooling function according to claim 4 is characterized in that: The first connecting tube (17) is fixedly connected to the interior of the shaft end plate (13), and the first connecting tube (17) is arranged to penetrate the interior of the shaft end plate (13) and the main shaft body (12).

6. The electric spindle with circulating cooling function according to claim 1, characterized in that: A second water pump (18) is fixedly connected inside the shaft sleeve (2), and a second water pipe (19) is fixedly connected to the input end of the second water pump (18).

7. The electric spindle with circulating cooling function according to claim 6, characterized in that: The outer wall of the second water delivery pipe (19) is fixedly connected to a second connecting pipe (20), and the second connecting pipe (20) is fixedly connected to the inside of the shaft end plate (13).

8. The electric spindle with circulating cooling function according to claim 7, characterized in that: The second connecting pipe (20) is arranged to penetrate the interior of the shaft end plate (13) and the main shaft body (12), and a vent hole (21) is opened inside the housing (1).

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