Motorized spindle cooling jacket applying composite bionic microstructure and motorized spindle

Abstract

The utility model provides a motorized spindle cooling jacket applying a composite bionic microstructure and a motorized spindle. The super-hydrophobic bionic shark scale microstructures at the two ends of the motorized spindle cooling sleeve achieve smoother fluid conduction by reducing resistance of cooling liquid in a flow channel. Compared with a traditional design, the flow speed of cooling liquid is higher, and energy loss is smaller. The super-hydrophilic bionic Echink microstructure in the middle greatly improves the heat transfer efficiency by increasing the contact area of fluid and the inner wall and prolonging the contact time of the fluid and the inner wall, and stable operation of the motorized spindle under the high heat load condition is ensured. By means of the flow channel microstructure of the bionic design, the pump power requirement needed by the cooling system is remarkably reduced, the energy consumption of fluid circulation is reduced, and the overall energy-saving performance of the system is improved. Due to the characteristics of the bionic microstructure, the inner wall of the water jacket has better anti-pollution performance and corrosion resistance, scaling and loss are reduced, the service life of the water jacket is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electric spindle cooling technology, and more specifically, to an electric spindle cooling sleeve and an electric spindle using a composite biomimetic microstructure. Background Technology

[0002] Electric spindles are key components in modern machinery, and their efficient operation is crucial for machining accuracy and equipment performance. However, during high-speed operation, electric spindles generate a large amount of heat. If this heat cannot be dissipated in time, it can lead to part deformation, decreased accuracy, and even equipment damage. Currently, cooling jackets, as an important device for heat dissipation in electric spindles, are widely used in mechanical equipment.

[0003] However, traditional cooling jackets mostly adopt direct flow or spiral flow channel structures, which have significant design flaws: on the one hand, the simple flow channel shape leads to greater fluid flow resistance; on the other hand, the heat exchange efficiency is difficult to fully utilize, limiting the cooling effect. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide an electric spindle cooling sleeve and an electric spindle that utilize a composite biomimetic microstructure to solve the above problems.

[0005] The present invention adopts the following solution:

[0006] This application provides an electric spindle cooling sleeve with a composite biomimetic microstructure, which is sleeved on the stator; the peripheral wall of the electric spindle cooling sleeve is provided with multiple interconnected cooling channels, including at least one first cooling channel on both sides and multiple second cooling channels in the middle.

[0007] The first cooling channel has micron-sized protrusions arranged on it, forming a superhydrophobic biomimetic shark scale microstructure.

[0008] The second cooling channel is arranged with micron-sized spiky second protrusions to form a superhydrophilic biomimetic spiny lizard microstructure.

[0009] Furthermore, the first protrusions are arranged in a periodic longitudinal and transverse pattern so that the water contact angle is greater than 150°.

[0010] Furthermore, the first protrusion includes two rectangular protrusions with heights of 50 μm and 25 μm, and lengths of 210 μm and 80 μm, respectively; and the interval between the first protrusions is 50 μm.

[0011] Furthermore, the second protrusions are arranged in a regular hexagonal grid pattern so that the water contact angle is less than 10°.

[0012] Furthermore, the second protrusion is a hexagon with a height of 29 μm and an inscribed circle radius of 0.3 mm, and is arranged in a regular grid pattern with an interval of 0.2 mm.

[0013] Furthermore, the electric spindle cooling sleeve includes an outer shell and an inner shell that is enclosed and connected to the inner peripheral wall of the outer shell; the cooling channel is disposed on the outer peripheral wall of the inner shell.

[0014] Furthermore, the electric spindle cooling sleeve is 3D printed as a single piece.

[0015] An electric spindle includes a stator and a spindle cooling sleeve sleeved on the stator.

[0016] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0017] This invention provides a cooling jacket for an electric spindle employing a composite biomimetic microstructure. The superhydrophobic, shark-scale-inspired microstructures at both ends reduce coolant resistance in the flow channels, enabling smoother fluid conduction. Compared to traditional designs, this results in faster coolant flow and less energy loss. The superhydrophilic, spiny lizard-inspired microstructure in the middle significantly improves heat transfer efficiency by increasing the contact area and time between the fluid and the inner wall, ensuring stable operation of the electric spindle under high heat load conditions. The biomimetic flow channel microstructure significantly reduces the pump power required by the cooling system, reduces energy consumption in fluid circulation, and improves the overall energy-saving performance of the system. Due to the characteristics of the biomimetic microstructure, the inner wall of the water jacket has better anti-fouling and corrosion resistance, reducing scaling and wear, extending the service life of the water jacket, and lowering maintenance costs. The composite structure is designed based on the thermal stress distribution of the electric spindle, achieving an ideal balance between fluidity and heat exchange performance, ensuring stable and efficient operation of the cooling system under various operating conditions. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the inner shell of an electric spindle cooling sleeve using a composite biomimetic microstructure according to an embodiment of this utility model;

[0020] Figure 2 This is a front structural schematic diagram of the inner shell of an electric spindle cooling sleeve using a composite biomimetic microstructure according to an embodiment of this utility model.

[0021] Figure 3 This is a partially enlarged structural diagram of the first protrusion of an electric spindle cooling sleeve using a composite biomimetic microstructure according to an embodiment of this utility model.

[0022] Figure 4 This is a partially enlarged structural diagram of the second protrusion of an electric spindle cooling sleeve using a composite biomimetic microstructure, according to an embodiment of this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of an electric spindle according to an embodiment of the present invention;

[0024] Icons: 1. Spindle shaft, 2. Front cover, 3. Front bearing housing, 4. First cooling channel, 5. Second cooling channel, 6. Coolant inlet, 7. Coolant outlet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on 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. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on 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.

[0026] Example

[0027] Combination Figures 1 to 4 As shown, this embodiment provides an electric spindle cooling sleeve with a composite biomimetic microstructure, which is sleeved on the stator; the peripheral wall of the electric spindle cooling sleeve is provided with multiple interconnected cooling channels, including at least one first cooling channel 4 on both sides and multiple second cooling channels 5 in the middle;

[0028] The first cooling channel 4 has micron-sized protrusions arranged on it to form a superhydrophobic biomimetic shark scale microstructure.

[0029] The second cooling channel 5 is arranged with micron-sized spiky second protrusions to form a superhydrophilic biomimetic spiny lizard microstructure.

[0030] Specifically, in this embodiment, such as Figures 1 to 3As shown, the first protrusions are arranged in a periodic longitudinal and transverse pattern to achieve a water contact angle greater than 150°. The first protrusions include two types of rectangular protrusions with heights of 50 μm and 25 μm, and lengths of 210 μm and 80 μm, respectively; the interval between the first protrusions is 50 μm. The principle of this structure is based on the shark scale structure arrangement, which significantly reduces the contact area between the fluid and the substrate, thereby significantly reducing fluid adhesion and flow resistance.

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the second protrusion is arranged in a regular hexagonal grid pattern to ensure that the water contact angle is less than 10°. The second protrusion is a hexagon with a height of 29 μm and an inscribed circle radius of 0.3 mm, arranged in a regular grid pattern with a spacing of 0.2 mm. The principle behind this structure is based on the natural texture of the spiny lizard's skin, where regularly arranged micro-spines enhance the surface's hydrophilicity. Through these spiny microstructures, water can better contact the surface and disperse rapidly, greatly increasing the contact area between the coolant and the inner wall, thereby improving heat exchange efficiency.

[0032] The electric spindle cooling sleeve may include an outer shell and an inner shell that is enclosed and connected to the inner peripheral wall of the outer shell; the cooling channels are disposed on the outer peripheral wall of the inner shell. Alternatively, it can be integrally formed by 3D printing.

[0033] It should be noted that the first cooling channels 4 at both ends are respectively provided with a coolant inlet 6 and a coolant outlet 7.

[0034] The superhydrophobic biomimetic shark scale microstructures at both ends reduce coolant resistance in the flow channels, enabling smoother fluid conduction. Compared to traditional designs, the coolant flow rate is faster and energy loss is less. The superhydrophilic biomimetic spiny lizard microstructure in the middle significantly improves heat transfer efficiency by increasing the contact area and time between the fluid and the inner wall, ensuring stable operation of the electric spindle under high heat load conditions. The biomimetic flow channel microstructure significantly reduces the pump power required by the cooling system, reduces energy consumption in fluid circulation, and improves the overall energy-saving performance of the system. Due to the characteristics of the biomimetic microstructure, the inner wall of the water jacket has better anti-fouling and corrosion resistance, reducing scaling and wear, extending the service life of the water jacket, and reducing maintenance costs. The composite structure is designed according to the thermal stress distribution of the electric spindle, achieving an ideal balance between fluidity and heat exchange performance in the water jacket, ensuring stable and efficient operation of the cooling system under different operating conditions.

[0035] An electric spindle, such as Figure 5As shown, it includes a stator and an electric spindle cooling sleeve sleeved on the stator, a spindle shaft 1 connected to the stator, a front bearing housing 3 and a front cover 2 disposed at the front end of the stator, and a rear bearing housing and a rear cover disposed at the rear end of the stator.

[0036] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A cooling sleeve for an electric spindle employing a composite biomimetic microstructure, fitted onto the stator; characterized in that, The electric spindle cooling sleeve has multiple interconnected cooling channels on its peripheral wall, including at least one first cooling channel on both sides and multiple second cooling channels in the middle. The first cooling channel has micron-sized protrusions arranged on it, forming a superhydrophobic biomimetic shark scale microstructure. The second cooling channel is arranged with micron-sized spiky second protrusions to form a superhydrophilic biomimetic spiny lizard microstructure.

2. The electric spindle cooling sleeve using a composite biomimetic microstructure according to claim 1, characterized in that, The first protrusion is arranged in a periodic longitudinal and transverse pattern so that the water contact angle is greater than 150°.

3. The electric spindle cooling sleeve using a composite biomimetic microstructure according to claim 2, characterized in that, The first protrusion includes two rectangular protrusions with heights of 50 μm and 25 μm, and lengths of 210 μm and 80 μm, respectively; and the interval between the first protrusions is 50 μm.

4. The electric spindle cooling sleeve using a composite biomimetic microstructure according to claim 1, characterized in that, The second protrusion is arranged in a regular hexagonal grid pattern so that the water contact angle is less than 10°.

5. The electric spindle cooling sleeve using a composite biomimetic microstructure according to claim 4, characterized in that, The second protrusion is a hexagon with a height of 29 μm and an inscribed circle radius of 0.3 mm, and is arranged in a regular grid pattern with an interval of 0.2 mm.

6. The electric spindle cooling sleeve using a composite biomimetic microstructure according to claim 1, characterized in that, The electric spindle cooling sleeve includes an outer shell and an inner shell that is enclosed and connected to the inner peripheral wall of the outer shell; the cooling channel is disposed on the outer peripheral wall of the inner shell.

7. The electric spindle cooling sleeve using a composite biomimetic microstructure according to claim 1, characterized in that, The electric spindle cooling sleeve is 3D printed in one piece.

8. An electric spindle, comprising a stator; characterized in that, It also includes an electric spindle cooling sleeve as described in any one of claims 1-7, which is sleeved on the stator.

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