CN-224229074-U - Electric spindle cooling sleeve and electric spindle using composite bionic microstructure

Abstract

The utility model provides an electric spindle cooling sleeve and an electric spindle applying a composite bionic microstructure. The super-hydrophobic bionic shark scale microstructure at the two ends of the electric spindle cooling sleeve realizes smoother fluid conduction by reducing the resistance of cooling liquid in the flow channel. Compared with the traditional design, the cooling liquid flows faster, and the energy loss is smaller. The superhydrophilic bionic spiny microstructure in the middle greatly improves the heat transfer efficiency by increasing the contact area and time of fluid and the inner wall, and ensures the stable operation of the electric spindle under the condition of high heat load. The bionic design flow channel microstructure obviously reduces the pump power requirement required by 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 performance and corrosion resistance, the scaling and the loss are reduced, the service life of the water jacket is prolonged, and the maintenance cost is reduced.

Inventors

• LIN LINGZHI
• WANG FUZENG
• JIANG FENG
• TAN YUANQIANG
• HUANG SHENGUI

Assignees

• 华侨大学
• 华侨大学南安智能制造研究院

Dates

Publication Date

20260512

Application Date

20250520

Claims (8)

1. 1. The electric spindle cooling sleeve is sleeved on the stator by using a composite bionic microstructure, and is characterized in that a plurality of circles of cooling flow passages which are communicated are arranged on the peripheral wall of the electric spindle cooling sleeve, and the electric spindle cooling sleeve comprises at least one first cooling flow passage on two sides and a plurality of second cooling flow passages in the middle; The first cooling flow channel is provided with micron-sized first bulges to form a super-hydrophobic bionic shark scale microstructure; And the second cooling flow passage is provided with micron-sized ratchet-shaped second bulges so as to form the super-hydrophilic bionic ratchet-shaped exendin microstructure.
2. 2. The motorized spindle cooling jacket using a composite biomimetic microstructure of claim 1, wherein the first protrusions are arranged in a periodic longitudinal and transverse arrangement such that the water contact angle is greater than 150 °.
3. 3. The electric spindle cooling jacket using the composite type bionic microstructure according to claim 2, wherein the first protrusions comprise two rectangular protrusions having a height of 50 μm and 25 μm and a length of 210 μm and 80 μm, respectively, and the interval between the first protrusions is 50 μm.
4. 4. The electric spindle cooling jacket applying the composite bionic microstructure according to claim 1, wherein the second protrusions are arranged in a regular hexagonal grid shape, so that a water contact angle is smaller than 10 °.
5. 5. The electric spindle cooling jacket using the composite type bionic microstructure according to claim 4, wherein the second protrusions are hexagonal with a height of 29 μm and an inscribed circle radius of 0.3mm, and are arranged in a regular grid-like interval of 0.2mm.
6. 6. The electric spindle cooling jacket applying the composite bionic microstructure according to claim 1, wherein the electric spindle cooling jacket comprises an outer shell and an inner shell which is connected to the inner peripheral wall of the outer shell in a sealing manner, and the cooling flow passage is arranged on the outer peripheral wall of the inner shell.
7. 7. The motorized spindle cooling jacket using the composite biomimetic microstructure of claim 1, wherein the motorized spindle cooling jacket is integrally formed with 3D printing.
8. 8. An electric spindle comprising a stator, and further comprising an electric spindle cooling jacket according to any one of claims 1-7 sleeved on the stator.

Description

Electric spindle cooling sleeve and electric spindle using composite bionic microstructure Technical Field The utility model relates to the technical field of electric spindle cooling, in particular to an electric spindle cooling sleeve and an electric spindle applying a composite bionic microstructure. Background Motorized spindles are critical components in modern mechanical equipment, and their efficient operation is critical to machining accuracy and equipment performance. However, in high-speed operation, the electric spindle generates a large amount of heat, and if heat cannot be dissipated in time, deformation of parts, degradation of precision and even equipment damage are caused. At present, the cooling jacket is used as an important device for heat dissipation of the electric spindle and is widely applied to mechanical equipment. However, the conventional cooling jacket mostly adopts a direct current or spiral flow passage structure, and has the obvious defects that on one hand, the simple flow passage shape causes high fluid flow resistance, and on the other hand, the heat exchange efficiency is difficult to fully exert, so that the cooling effect is limited. Disclosure of utility model In view of the above, the present utility model is directed to an electric spindle cooling jacket and an electric spindle using a composite bionic microstructure, so as to solve the above problems. The utility model adopts the following scheme: The application provides an electric spindle cooling sleeve applying a composite bionic microstructure, which is sleeved on a stator, wherein a plurality of circles of cooling flow passages which are communicated are arranged on the peripheral wall of the electric spindle cooling sleeve, and the electric spindle cooling sleeve comprises at least one first cooling flow passage on two sides and a plurality of second cooling flow passages in the middle part; The first cooling flow channel is provided with micron-sized first bulges to form a super-hydrophobic bionic shark scale microstructure; And the second cooling flow passage is provided with micron-sized ratchet-shaped second bulges so as to form the super-hydrophilic bionic ratchet-shaped exendin microstructure. Further, the first protrusions are arranged in a longitudinal and transverse arrangement with periodicity such that the water contact angle is greater than 150 °. Further, the first protrusions include two kinds of rectangular protrusions having heights of 50 μm and 25 μm, respectively, and lengths of 210 μm and 80 μm, respectively, and the interval between the first protrusions is 50 μm. Further, the second protrusions are arranged in a regular hexagonal grid shape, so that the water contact angle is smaller than 10 °. Further, the second protrusions are hexagonal with the height of 29 mu m and the inscribed circle radius of 0.3mm, and are arranged in a regular grid-shaped interval of 0.2mm. Further, the electric spindle cooling sleeve comprises an outer shell and an inner shell which is connected to the inner peripheral wall of the outer shell in a sealing mode, and the cooling flow passage is arranged on the outer peripheral wall of the inner shell. Further, the electric spindle cooling sleeve is integrally formed through 3D printing. An electric spindle comprises a stator and an electric spindle cooling sleeve sleeved on the stator. By adopting the technical scheme, the utility model can obtain the following technical effects: The utility model provides an electric spindle cooling sleeve applying a composite bionic microstructure, wherein the super-hydrophobic bionic shark scale microstructure at two ends of the electric spindle cooling sleeve realizes smoother fluid conduction by reducing the resistance of cooling liquid in a flow channel. Compared with the traditional design, the cooling liquid flows faster, and the energy loss is smaller. The superhydrophilic bionic spiny microstructure in the middle greatly improves the heat transfer efficiency by increasing the contact area and time of fluid and the inner wall, and ensures the stable operation of the electric spindle under the condition of high heat load. The bionic design flow channel microstructure obviously reduces the pump power requirement required by 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 performance and corrosion resistance, the scaling and the loss are reduced, the service life of the water jacket is prolonged, and the maintenance cost is reduced. The composite structure is designed according to the thermal stress distribution of the electric spindle, so that the water jacket achieves ideal balance between fluidity and heat exchange performance, and the cooling system can stably and efficiently operate under different working conditions.