Motorized spindle cooling jacket applying composite bionic microstructure and motorized spindle

Abstract

The invention 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] The present invention relates to the technical field of electric spindle cooling, and in particular to an electric spindle cooling sleeve and an electric spindle using a composite bionic microstructure. Background Art

[0002] The electric spindle is a key component in modern machinery, and its efficient operation is crucial to machining accuracy and equipment performance. However, during high-speed operation, the electric spindle generates a large amount of heat. If heat cannot be dissipated in a timely manner, it will lead to part deformation, reduced precision, and even equipment damage. Currently, cooling jackets are widely used in mechanical equipment as a key device for dissipating heat from electric spindles.

[0003] However, traditional cooling jackets mostly adopt a direct current or spiral flow channel structure, and their design has significant defects: 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 exert, which limits the cooling effect. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide an electric spindle cooling jacket and an electric spindle using a composite bionic microstructure to solve the above problems.

[0005] The present invention adopts the following scheme:

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

[0007] The first cooling channel is provided with micron-scale first protrusions, forming a super-hydrophobic bionic shark scale microstructure;

[0008] The second cooling channel is provided with micron-sized spiny second protrusions to form a super-hydrophilic bionic spiny lizard microstructure.

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

[0010] Furthermore, 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; and the intervals between the first protrusions are 50 μm.

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

[0012] Furthermore, the second protrusions are hexagonal with a height of 29 μm and an inscribed circle radius of 0.3 mm, and are arranged in a regular grid with an interval of 0.2 mm.

[0013] Furthermore, the electric spindle cooling jacket includes an outer shell and an inner shell sealed and connected to the inner peripheral wall of the outer shell; the cooling channel is arranged on the outer peripheral wall of the inner shell.

[0014] Furthermore, the electric spindle cooling sleeve is integrally formed by 3D printing.

[0015] An electric spindle comprises a stator and an electric spindle cooling jacket sleeved on the stator.

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

[0017] The present invention provides an electric spindle cooling jacket using a composite bionic microstructure. The super-hydrophobic bionic shark scale microstructures at both ends of the jacket achieve smoother fluid conduction by reducing the resistance of the coolant in the flow channel. Compared with traditional designs, the coolant flow rate is faster and the energy loss is smaller. The super-hydrophilic bionic thorny lizard microstructure in the middle greatly improves the heat transfer efficiency by increasing the contact area and time between the fluid and the inner wall, ensuring the stable operation of the electric spindle under high heat load conditions. The bionic flow channel microstructure significantly reduces the pump power required for the cooling system, reduces the energy consumption of fluid circulation, and improves the overall energy-saving performance of the system. Due to the characteristics of the bionic microstructure, the inner wall of the water jacket has better anti-fouling and corrosion resistance, reduces scaling and loss, extends the service life of the water jacket, and reduces maintenance costs. The composite structure is designed according to the thermal stress distribution of the electric spindle, so that the water jacket achieves an ideal balance between fluidity and heat exchange performance, ensuring that the cooling system can operate stably and efficiently under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of an inner shell of an electric spindle cooling jacket using a composite bionic microstructure according to an embodiment of the present invention;

[0020] Figure 2 This is a front structural schematic diagram of an inner shell of an electric spindle cooling jacket using a composite bionic microstructure according to an embodiment of the present invention;

[0021] Figure 3 This is a partially enlarged structural schematic diagram of a first protrusion of an electric spindle cooling sleeve using a composite bionic microstructure according to an embodiment of the present invention;

[0022] Figure 4 This is a partially enlarged structural diagram of a second protrusion of an electric spindle cooling sleeve using a composite bionic microstructure according to an embodiment of the present invention;

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

[0024] Icon: spindle axis 1, front end cover 2, front bearing seat 3, first cooling channel 4, second cooling channel 5, coolant inlet 6, coolant outlet 7. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0026] Example

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

[0028] The first cooling channel 4 is provided with micron-scale first protrusions, forming a super-hydrophobic bionic shark scale microstructure;

[0029] The second cooling channel 5 is provided with micron-scale spiny second protrusions to form a super-hydrophilic bionic spiny lizard microstructure.

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

[0031] In this embodiment, if Figure 1 、 Figure 2 and Figure 4 As shown, the second protrusions are arranged in a regular hexagonal grid so that the water contact angle is less than 10°. The second protrusions are hexagonal with a height of 29μm and an inscribed circle radius of 0.3mm, and are arranged in a regular grid with a spacing of 0.2mm. The principle of this structure is to improve the hydrophilicity of the surface through regularly arranged micro-spines based on the natural texture structure of the thorny lizard skin. Through these thorn-like microstructures, water can better contact the surface and disperse quickly, greatly increasing the contact area between the coolant and the inner wall, thereby improving the heat exchange efficiency.

[0032] The electric spindle cooling jacket may include an outer shell and an inner shell sealed and connected to the inner circumferential wall of the outer shell; the cooling channel is provided on the outer circumferential wall of the inner shell. Alternatively, the cooling jacket may be integrally formed by 3D printing.

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

[0034] The super-hydrophobic bionic shark scale microstructures at both ends achieve smoother fluid conduction by reducing the resistance of the coolant in the flow channel. Compared with traditional designs, the coolant flow rate is faster and the energy loss is smaller. The super-hydrophilic bionic thorny lizard microstructure in the middle greatly improves the heat transfer efficiency by increasing the contact area and time between the fluid and the inner wall, ensuring the stable operation of the electric spindle under high heat load conditions. The biomimetic flow channel microstructure significantly reduces the pump power required for the cooling system, reduces the energy consumption of fluid circulation, and improves the overall energy-saving performance of the system. Due to the characteristics of the bionic microstructure, the inner wall of the water jacket has better anti-fouling and corrosion resistance, reduces scaling and loss, extends the service life of the water jacket, and reduces maintenance costs. The composite structure is designed according to the thermal stress distribution of the electric spindle, so that the water jacket achieves an ideal balance between fluidity and heat exchange performance, ensuring that the cooling system can operate stably and efficiently under different working conditions.

[0035] An electric spindle, such as Figure 5As shown, it includes a stator and the electric spindle cooling jacket sleeved on the stator, a spindle axis 1 connected to the stator, a front bearing seat 3 and a front cover 2 arranged at the front end of the stator, and a rear bearing seat and a rear cover arranged at the rear end of the stator.

[0036] The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0039] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

Claims

1. An electric spindle cooling jacket using a composite bionic microstructure, sleeved on a stator; characterized in that: The peripheral wall of the electric spindle cooling system is provided with multiple circles of interconnected cooling channels, including at least one first cooling channel on both sides and multiple second cooling channels in the middle; The first cooling channel is provided with micron-scale first protrusions, forming a super-hydrophobic bionic shark scale microstructure; The second cooling channel is provided with micron-sized spiny second protrusions to form a super-hydrophilic bionic spiny lizard microstructure.

2. The electric spindle cooling jacket using a composite bionic microstructure according to claim 1 is characterized in that: The first protrusions are arranged in a periodic longitudinal and transverse arrangement so that the water contact angle is greater than 150°.

3. The electric spindle cooling jacket using a composite bionic microstructure according to claim 2, characterized in that: 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; and the intervals between the first protrusions are 50 μm.

4. The electric spindle cooling jacket using a composite bionic microstructure according to claim 1, characterized in that: The second protrusions are arranged in a regular hexagonal grid, so that the water contact angle is less than 10°.

5. The electric spindle cooling jacket using a composite bionic microstructure according to claim 4 is characterized in that: The second protrusions are hexagonal with a height of 29 μm and an inscribed circle radius of 0.3 mm, and are arranged in a regular grid with an interval of 0.2 mm.

6. The electric spindle cooling jacket using a composite bionic microstructure according to claim 1, characterized in that: The electric spindle cooling jacket includes an outer shell and an inner shell closedly connected to the inner peripheral wall of the outer shell; the cooling channel is arranged on the outer peripheral wall of the inner shell.

7. The electric spindle cooling jacket using a composite bionic microstructure according to claim 1, characterized in that: The electric spindle cooling sleeve is integrally formed by 3D printing.

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

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