Embedded lightweight high-speed oscillating heat pipe grinding wheel and manufacturing method

Abstract

The present invention relates to an embedded lightweight high-speed oscillating heat pipe grinding wheel and a manufacturing method thereof. The structure is mainly composed of an upper end cover of a grinding wheel, an oscillating heat pipe flow channel and a lower end cover of a grinding wheel. The embedded lightweight high-speed oscillating heat pipe grinding wheel structure is welded as a whole. The oscillating heat pipe flow channel is formed by brazing two multi-circuit oscillating heat pipe loops of bent flower-shaped copper tubes and a substrate with a square groove structure. The hot end of the flower-shaped oscillating heat pipe flow channel is perpendicular to the cold end and the insulation end, and fits tightly to the working surface of the grinding wheel in a surface contact manner. At the same time, the two flower-shaped oscillating heat pipe loops are independent of each other and are evenly arranged in an interlaced manner along the circumferential direction. The grinding wheel can realize a combination of multiple working fluids and multiple structural parameters, broaden the application range of radial oscillating heat pipe grinding wheels, expand the process domain of grinding wheels, and utilize the efficient heat conduction capacity of the internal oscillating heat pipe to ensure efficient and stable transmission of arc zone grinding heat to avoid workpiece burns. Provide a new cooling approach and thermal damage control method for grinding difficult-to-process materials, and improve processing efficiency.

Description

Technical Field

[0001] The present invention relates to an embedded lightweight high-speed oscillating heat pipe grinding wheel and a manufacturing method. The device can realize a combination of multiple working fluids and multiple structural parameters, broaden the application range of radial oscillating heat pipe grinding wheels, expand the grinding wheel process range, ensure efficient and stable transmission of arc zone grinding heat, and avoid workpiece burns. It provides a new cooling path and thermal damage control method for grinding difficult-to-process materials, thereby improving processing efficiency. Background Art

[0002] The efficient cooling technology of oscillating heat pipe grinding wheels has become a new cooling technology for machining processes and has broad application prospects. The oscillating heat pipe grinding wheel utilizes the efficient heat conduction capacity of the internal oscillating heat pipe structure to stably and continuously drain the grinding heat in the grinding arc zone effectively and quickly, strengthen the heat exchange in the grinding arc zone, reduce the grinding temperature, and improve the grinding quality. With the continuous deepening of related research, the performance requirements for oscillating heat pipe grinding wheels in different grinding application scenarios are also increasing, prompting the scope and field of application of its grinding process to continue to expand. From the current research, in the environment of radial rotation, different types of working fluids and corresponding pipe diameters in the application of oscillating heat pipes show their own unique advantage ranges. This means that according to the grinding process conditions and specific needs, the combined use of multiple working fluids, pipe diameters and other influencing factors can maximize the performance of the oscillating heat pipe grinding wheel.

[0003] The patent application document with publication number CN106475919A discloses a method for cooling a grinding wheel with an oscillating heat pipe and improving the heat dissipation of the grinding wheel, which includes a grinding wheel body and an oscillating heat pipe. Its characteristics are: a steel annular plate oscillating heat pipe structure is adopted. The oscillating heat pipe 2 is formed by two thin annular steel plates butted up and down. Inside the grinding wheel 1 are three groups of mutually symmetrical oscillating heat pipes 2. The heat generated by grinding during the processing is transferred along the outer wall of the grinding wheel body 1 to the heat absorption section of the oscillating heat pipe 2. The advantages of this oscillating heat pipe cooling grinding wheel are as follows: utilizing the efficient heat transfer capacity of the oscillating heat pipe, filling different working fluids to adapt to different temperature control requirements, and the steel annular plate oscillating heat pipe structure used is easy to manufacture.

[0004] The authorized patent with publication number CN105773456A discloses an oscillating heat pipe agglomeration grinding wheel and a manufacturing method thereof, which includes a grinding wheel body and an oscillating heat pipe agglomeration. It is characterized in that: a plurality of connecting holes perpendicular to the upper and lower end surfaces of the oscillating heat pipe substrate are provided. The advantages of this oscillating heat pipe agglomeration grinding wheel are as follows: the designed oscillating heat pipe segment grinding wheel does not need to replace the entire grinding wheel when the grinding part is blunted, but only needs to replace the oscillating heat pipe segment with the blunt grinding part, thereby reducing production costs and production cycles and saving resources.

[0005] In the device or method involved in the above-mentioned public patent, the thermal conductivity of the oscillating heat pipe material is poor, and the contact between its hot end and the working layer of the grinding wheel is mainly in the form of point contact. This design results in that when the heat generated during the grinding process is transferred to the hot end of the oscillating heat pipe through the grinding wheel, the hot end can absorb relatively less heat, thereby limiting the ability of the oscillating heat pipe to perform efficient heat conduction. At the same time, only a single working fluid and pipe diameter design can be used inside the grinding wheel. Working fluid and pipe diameter are one of the important factors affecting the heat transfer performance of the oscillating heat pipe grinding wheel. It is difficult to take into account the comprehensive performance of the oscillating heat pipe grinding wheel by relying solely on a single structural design, which to a certain extent limits the application potential of the oscillating heat pipe grinding wheel under different processes. Therefore, it is necessary to design a new radial oscillating heat pipe grinding wheel structure that combines multiple influencing factors and can be applied in a wider grinding process range. Summary of the invention

[0006] Purpose of the invention: In order to solve the deficiencies in the current prior art, the purpose of the present invention is to provide an embedded lightweight high-speed oscillating heat pipe grinding wheel and a manufacturing method. The internal flow channel of the grinding wheel structure can realize the combined application of multiple working media and multiple pipe diameters, while ensuring that the heat transfer area of ​​the hot end is increased, fully absorbing the grinding heat, and achieving stable and efficient thermal conductivity under a wide process range of applications.

[0007] Technical solution: In order to achieve the above-mentioned invention object, the present invention adopts the following technical solution:

[0008] An embedded lightweight high-speed oscillating heat pipe grinding wheel structure is mainly composed of a grinding wheel upper end cover, an oscillating heat pipe flow channel and a grinding wheel lower end cover. Abrasive grains are arranged on the outer peripheral surface of the embedded lightweight high-speed oscillating heat pipe grinding wheel as a grinding working layer. The oscillating heat pipe flow channel inside the grinding wheel structure is formed by brazing two multi-loop flower-shaped oscillating heat pipes and a substrate. The two flower-shaped oscillating heat pipes are independent of each other and can be filled with the same or different working fluids according to the grinding process range of the grinding wheel and the temperature control requirements of the workpiece, so as to achieve efficient transfer of grinding heat and stable operation under a wide process range.

[0009] The multi-loop flower-shaped oscillating heat pipe loop is made of bent capillary copper tubes. Several single-loop oscillating heat pipes perpendicular to the axis of the grinding wheel are connected end to end in sequence to form a closed flower-shaped oscillating heat pipe. At the same time, a vacuum injection port is reserved on a single loop. The multi-loop flower-shaped oscillating heat pipe is divided into a hot end, a cold end and an insulating end structure. In order to ensure the heat transfer efficiency and efficient heat transfer capacity of the oscillating heat pipe grinding wheel, the hot end and the cold end and the insulating section of each single loop in the multi-loop flower-shaped oscillating heat pipe loop are designed to be 90° vertical, and the surface contact method is adopted with the working surface of the grinding wheel to effectively increase the heat transfer area. The two multi-loop flower-shaped oscillating heat pipes are equal in shape and size, staggered at a certain angle, and evenly arranged inside the grinding wheel, independent of each other.

[0010] The aluminum alloy substrate is processed with a square groove structure of the same size as the multi-loop flower-shaped oscillating heat pipe. The multi-loop flower-shaped oscillating heat pipe is embedded in the square grooves opened on the upper and lower surfaces and the outer peripheral surface of the flow channel substrate, and is filled with high thermal conductivity silicone grease or silver glue, and then brazed into an oscillating heat pipe flow channel. The excellent thermal conductivity and lightweight material of the aluminum alloy substrate itself make the embedded lightweight high-speed oscillating heat pipe grinding wheel lightweight, while also improving the overall thermal conductivity of the grinding wheel and efficiently transferring grinding heat.

[0011] The two annular cover plates are made of 45 steel and are sealed and covered on the upper and lower surfaces of the grinding wheel body, respectively, turning the grinding wheel into an integrated structure. When the embedded lightweight high-speed oscillating heat pipe grinding wheel grinds the workpiece, the grinding heat in the grinding arc zone will be transferred to the hot end of the multi-circuit flower-shaped oscillating heat pipe through the grinding wheel working layer. The internal working fluid forms a gas-liquid plug, which transfers heat by phase change and gas-liquid plug oscillation motion.

[0012] The present invention also provides a method for manufacturing an embedded lightweight high-speed oscillating heat pipe grinding wheel, the method comprising: pre-manufacturing the grinding wheel flow channel substrate, the upper end cover, the multi-loop flower-shaped oscillating heat pipe structure and the lower end cover;

[0013] The multi-loop flower-shaped oscillating heat pipe structure adopts copper capillary bending, and the elbow size is smaller than the width of the flow channel substrate, which is easy to install. The diameter size of the flower-shaped oscillating heat pipe is designed according to the selected working fluid and the following formula.

[0014]

[0015] Where D is the diameter of the oscillating heat pipe, σ is the surface tension of the working fluid, a is the centrifugal acceleration of the working fluid, ρ l is the liquid phase density of the working fluid, ρ v The two flower-shaped multi-loop oscillating heat pipes have the same structure and are placed in a staggered manner in a strictly perpendicular manner to the axis of the grinding wheel to ensure dynamic balance during rotation and prevent vibration due to uneven mass distribution.

[0016] The grinding wheel flow channel substrate is made of aluminum alloy material with good thermal conductivity. A square groove flow channel is processed on the substrate according to the diameter of the flower-shaped oscillating heat pipe to ensure that the flower-shaped oscillating heat pipe can be completely placed inside the square groove. The overall outer diameter of the flower-shaped oscillating heat pipe is the same as the outer diameter of the substrate. After installing the flower-shaped oscillating heat pipe, fill the gap in the groove with thermal conductive silicone grease or silver glue, and braze the flower-shaped oscillating heat pipe and the aluminum alloy substrate after curing. After vacuuming and liquid injection, an ultrasonic sealing machine is used to seal. Place the grinding wheel oscillating heat pipe flow channel on the lower end cover, fix the position with silver glue, and weld the upper end cover to the lower end cover of the grinding wheel after curing.

[0017] Beneficial effects:

[0018] (1) The present invention has a simple structure and is easy to install. The hot end of the flower-shaped oscillating heat pipe and the working surface of the grinding wheel adopt a surface contact method, which effectively increases the heat transfer area and can effectively exert the high-efficiency heat conduction capability of the oscillating heat pipe.

[0019] (2) The embedded lightweight high-speed oscillating heat pipe grinding wheel realized by the present invention can ensure that different working fluids can be filled in the flow channel according to the temperature control requirements of the workpiece and the required working range of the grinding wheel to ensure the overall performance of the combined oscillating heat pipe. At the same time, during the grinding process, the combined application of different working fluids can significantly improve the working efficiency and performance of the grinding wheel without making major changes to the original structure. Broaden the application range of radial oscillating heat pipe grinding wheels and expand the grinding wheel process domain. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the embedded lightweight high-speed oscillating heat pipe grinding wheel of the present invention;

[0021] Figure 2 This is a structural explosion diagram of the embedded lightweight high-speed oscillating heat pipe grinding wheel of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the upper end cover 1 of the grinding wheel;

[0023] Figure 4 It is a schematic diagram of the structure of the oscillating heat pipe flow channel inside the grinding wheel;

[0024] Figure 5 It is a schematic diagram of the structure of a multi-loop flower-shaped oscillating heat pipe;

[0025] Figure 6 is a schematic diagram of the structure of the substrate;

[0026] Figure 7 It is a schematic diagram of the structure of the integral oscillating heat pipe flow channel substrate after brazing;

[0027] Figure 8 It is a schematic structural diagram of the lower end cover 5 of the grinding wheel;

[0028] Fig. 9 This is the simulation diagram of the grinding temperature field of the non-oscillating heat pipe grinding wheel;

[0029] Fig.10 This is the grinding temperature field result diagram of the embedded lightweight high-speed oscillating heat pipe grinding wheel in Example 1.

[0030] Description of the main reference numerals in the figure: 1- upper end cover of grinding wheel; 2- multi-loop flower-shaped oscillating heat pipe I; 3- base plate; 4- multi-loop flower-shaped oscillating heat pipe II; 5- lower end cover of grinding wheel (5-1 inner hole, 5-2 rear end face of grinding wheel, 5-3 working face of grinding wheel); A- hot end; B- cold end; C- insulation section. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the patent application of the present invention, the technical solutions in the present application are clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described implementation methods are only part of the implementation methods of the present application, not all implementation methods. Based on the implementation methods in the present application, all other implementation methods obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0032] The technical solution of the present invention will be specifically described below in conjunction with implementation cases and drawings.

[0033] Example 1

[0034] Figure 1 This is a schematic diagram of the overall structure of the embedded lightweight high-speed oscillating heat pipe grinding wheel of the present invention. Figure 2 This is an exploded view of the structure of the embedded lightweight high-speed oscillating heat pipe grinding wheel of the present invention. Figure 1 , 2 As shown, the present invention provides an embedded lightweight high-speed oscillating heat pipe grinding wheel, including a grinding wheel upper end cover 1 and two multi-circuit flower-shaped oscillating heat pipes 2 and 4 of the same type, a flow channel substrate 3 and a grinding wheel lower end cover 5, as shown in FIG. Figure 1 and Figure 2 The two multi-loop flower-shaped oscillating heat pipes and the flow channel substrate 3 are located between the upper end cover 1 and the lower end cover 5 .

[0035] Figure 3 It is a schematic diagram of the structure of the upper end cover 1 of the grinding wheel. Figure 4 This is a schematic diagram of the structure of the oscillating heat pipe flow channel inside the grinding wheel. Figure 5 This is a schematic diagram of the multi-loop flower-shaped oscillating heat pipe structure. Figure 6 is a schematic diagram of the structure of the substrate. Figure 7 This is a schematic diagram of the structure of the overall oscillating heat pipe flow channel substrate after brazing. Figure 8 It is a schematic diagram of the structure of the lower end cover 5 of the grinding wheel. Figure 3-8 As shown, the upper end cover 1 and the lower end cover 5 are both made of 45 steel. The thickness of the upper and lower end cover planes is 2mm. The upper end cover 1 and the lower end cover 5 of the grinding wheel are both left with a 1mm weld. Among them, the outer cylindrical surface of the lower end cover 5 is the grinding wheel working surface 5-3, on which electroplating or brazing abrasive grains can be used. In this example, the overall diameter of the grinding wheel is 400mm, the diameter of the inner hole 5-1 is 127mm, and the width is 25mm.

[0036] Multi-circuit flower-shaped oscillating heat pipe Ⅰ2 and multi-circuit flower-shaped oscillating heat pipe Ⅱ4 are the same in size and appearance. They are made of bent copper tubes. The tube diameter is selected according to the working medium in the tube. Figure 5As shown, the hot end A, the cold end B and the insulation section C of the oscillating heat pipe are designed to be 90° vertical, and the hot end is located as a whole on the working surface 5-3 of the grinding wheel to increase the effective heat transfer area. The loop length of the flower-shaped oscillating heat pipe is 110mm. The diameter of the elbow of the cold end B is 25mm. In this example, an 8-loop flower-shaped oscillating heat pipe design is adopted, which is evenly arranged along a 360° circle and connected end to end in sequence. Each single-loop structure is perpendicular to the axis direction of the grinding wheel. At the same time, a capillary with a diameter of 1mm is used for bending in this example. A vacuum injection port is left on each flower-shaped oscillating heat pipe. The interior of the two flower-shaped oscillating heat pipes can be filled with different working fluids according to the grinding application process range of the grinding wheel.

[0037] The substrate 3 is made of aluminum alloy and has a diameter smaller than the grinding wheel diameter (see Figure 6 The upper and lower surfaces and the outer circumference of the substrate 3 are provided with square groove structures (1×1×1mm in this example) matching the structures of the flower-shaped oscillating heat pipes 2 and 4. 3 The two flower-shaped oscillating heat pipe structures are installed at a 30° staggered angle after filling to ensure overall uniformity. After installation, the hot ends of the oscillating heat pipes 2 and 4 are tightly fitted to the base plate 3 and the lower end cover 5, and the distance from the grinding wheel working surface is 2mm thick.

[0038] The present invention also provides a method for manufacturing the above-mentioned embedded lightweight high-speed oscillating heat pipe grinding wheel, which includes the following steps.

[0039] Step 1. Pre-fabricate the upper end cover 1 and the lower end cover 5 of the grinding wheel. The upper end cover 1 is the front end face of the grinding wheel. The lower end cover 5 comprises an inner hole 5-1 of the grinding wheel, a rear end face 5-2 of the grinding wheel and an outer circumferential surface of the grinding wheel, i.e., a working surface 5-3.

[0040] Step 2. Use a copper capillary to bend out a flower-shaped oscillating heat pipe structure in the grinding wheel. The hot end of the oscillating heat pipe is perpendicular to the cold end and the insulation section. The hot end is entirely on the working surface 5-3 of the grinding wheel. The loop length of the flower-shaped oscillating heat pipe is 110mm, so that the cold end is outside the contact surface between the flange and the grinding wheel. The diameter of the cold end elbow is 25mm. In this example, an 8-loop flower-shaped oscillating heat pipe design is used, which is evenly arranged along a 360° circumference, and each single loop is connected end to end in sequence to form a whole. Since the arrangement angle of the loop is related to the number of loops, in this example the angle between the flow channels of the two loops is 60° (see Figure 4 ). A vacuum injection port is reserved at the cold end of a certain loop, which is a copper capillary with a diameter of 1mm.

[0041] Step 3: According to the diameter of the flower-shaped oscillating heat pipes 2 and 4 (1 mm diameter is used in this example), corresponding square grooves (1×1×1 mm in this example) are milled on the substrate 3. 3 ) to ensure that the oscillating heat pipes 2 and 4 can be completely placed in the square groove. The outer diameter of the substrate 3 is the same as the overall outer diameter of the flower-shaped oscillating heat pipes 2 and 4, and is smaller than the diameter of the grinding wheel. The substrate 3 is also processed with an inner hole structure.

[0042] Step 4. Insert the flower-shaped oscillating heat pipes 2 and 4 into the square grooves on the substrate 3, and fill the gaps with thermal grease or silver glue to fix the oscillating heat pipe structure and improve the overall thermal conductivity. Place in an oven for drying and curing. Subsequently, braze the flower-shaped oscillating heat pipes 2 and 4 and the substrate 3 into an integrated oscillating heat pipe flow channel substrate (see Figure 7 ).

[0043] Step 5. The two multi-loop structures of the flower-shaped oscillating heat pipes 2 and 4 are vacuumed and filled with liquid. The filling rate is set to 55%. Acetone, water, methanol and other working fluids can be injected into the flower-shaped oscillating heat pipe. The two flower-shaped oscillating heat pipes can be filled with the same working fluid, or they can be filled with different working fluids according to the grinding process range of the grinding wheel or the temperature control requirements of the workpiece to ensure the overall performance of the grinding wheel. The ultrasonic sealing machine is used for sealing, and the excess capillary part is cut off.

[0044] Step 6. Place the flower-shaped oscillating heat pipes 2, 4 and the substrate 3 in the lower end cover 5, fix the position with silver glue, and seal with the upper end cover 1. Spot welding is first performed between the upper end cover 1 and the lower end cover 5 to fix the position; after the position is fixed, the upper end cover 1 and the lower end cover 5 are welded in a full circle by laser welding. The embedded lightweight high-speed oscillating heat pipe grinding wheel is inspected for pores after welding. If there are pores, it is repaired again.

[0045] Step 7. After welding, the embedded lightweight high-speed oscillating heat pipe grinding wheel will be subjected to corresponding turning, grinding and other processing to ensure that the coaxiality and flatness of the grinding wheel meet the requirements. Dynamic balancing detection is also carried out.

[0046] In order to illustrate the feasibility and effectiveness of this patent, the temperature field of the grinding process of the embedded lightweight high-speed oscillating heat pipe grinding wheel and the non-oscillating heat pipe grinding wheel is compared and analyzed to verify the high efficiency and enhanced heat exchange capacity of the embedded lightweight high-speed oscillating heat pipe grinding wheel. The simulation adopts the grinding wheel structure described in Example 1, and the grinding heat flux density is set to 1×10 8 W / m 2 . Fig. 9 This is a simulation diagram of the grinding temperature field of a non-oscillating heat pipe grinding wheel. The highest temperature in the grinding arc zone is 1224°C; Fig.10 This is the grinding temperature field result diagram of the embedded lightweight high-speed oscillating heat pipe grinding wheel of Example 1. The highest temperature in the grinding arc zone is 518°C; it can be seen that the embedded lightweight high-speed oscillating heat pipe grinding wheel has a high efficiency in heat exchange and effectively reduces the grinding temperature by 57.6%.

[0047] It can be seen that the present invention can realize the combination of multiple working fluids and multiple structural parameters, broaden the application scope of radial oscillating heat pipe grinding wheels, expand the grinding wheel process range, ensure efficient and stable transmission of arc zone grinding heat, and avoid workpiece burns. It provides a new cooling path and thermal damage control method for grinding difficult-to-process materials, thereby improving processing efficiency.

[0048] The above description of various embodiments of the present application is provided to those skilled in the art for the purpose of description. It is not intended to be exhaustive or to limit the present invention to a single disclosed embodiment. As mentioned above, various substitutions or changes of the present application will be apparent to those skilled in the art to which the above-mentioned technology belongs. Therefore, although some alternative embodiments have been specifically discussed, other embodiments will be apparent, or those skilled in the art will be relatively easy to derive. The present application is intended to include all substitutions, modifications, and changes of the present invention discussed herein, as well as other embodiments falling within the spirit and scope of the above-mentioned application.

[0049] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application, and it is intended that the appended claims include these modifications and variations without departing from the spirit of the present application.

Claims

1. An embedded lightweight high-speed oscillating heat pipe grinding wheel, characterized in that: include: A grinding wheel upper end cover (1), two multi-circuit flower-shaped oscillating heat pipes, a flow channel substrate (3) and a grinding wheel lower end cover (5); The multi-loop flower-shaped oscillating heat pipe is a closed structure formed by connecting single-loop flower-shaped oscillating heat pipes evenly distributed in a plane end to end, and is formed by bending a copper capillary; one of the multi-loop flower-shaped oscillating heat pipes is embedded in a square groove provided on the upper surface and the outer peripheral surface of the flow channel substrate, and the other multi-loop flower-shaped oscillating heat pipe is embedded in a square groove provided on the lower surface and the outer peripheral surface of the flow channel substrate, so as to construct an oscillating heat pipe flow channel; the two multi-loop flower-shaped oscillating heat pipes are interlaced and independent of each other; the upper end cover and the lower end cover of the grinding wheel are brazed to the upper and lower surfaces of the flow channel substrate (3) embedded with the multi-loop flower-shaped oscillating heat pipe, so as to form an oscillating heat pipe grinding wheel; Each single-loop flower-shaped oscillating heat pipe of the multi-loop flower-shaped oscillating heat pipe is perpendicular to the axis direction of the grinding wheel, and a vacuum injection port is provided on each single-loop flower-shaped oscillating heat pipe; the multi-loop flower-shaped oscillating heat pipe includes a hot end, a cold end and an insulating section, wherein the hot end is perpendicular to the cold end and the insulating section, and the hot end is in surface contact with the working surface of the grinding wheel; The two multi-loop flower-shaped oscillating heat pipes have the same shape and size, are filled with the same or different working fluids, and the hot end of the multi-loop flower-shaped oscillating heat pipe contacts the working surface of the grinding wheel; The diameter of the multi-loop flower-shaped oscillating heat pipe is designed according to the selected working fluid and the following formula: ； in, D is the diameter of the multi-loop flower-shaped oscillating heat pipe, σ is the surface tension of the working fluid, a is the centrifugal acceleration of the working fluid, ρ l is the liquid phase density of the working fluid, ρ v is the gas phase density of the working fluid; When the embedded lightweight high-speed oscillating heat pipe grinding wheel grinds the workpiece, the grinding heat in the grinding arc zone will be transferred to the hot end of the multi-loop flower-shaped oscillating heat pipe through the grinding wheel working layer; the internal working fluid forms a gas-liquid plug to transfer heat by phase change and gas-liquid plug oscillation motion.

2. The embedded lightweight high-speed oscillating heat pipe grinding wheel according to claim 1 is characterized in that: The flow channel substrate (3) is made of aluminum alloy material, and has flow channel grooves of the same size as the multi-loop flower-shaped oscillating heat pipes processed on the upper and lower surfaces and the outer peripheral surface; the two multi-loop flower-shaped oscillating heat pipe flow channels are completely placed in the flow channel grooves, and the gaps are filled with thermal conductive silicone grease or silver glue to ensure that the oscillating heat pipes and the flow channels are tightly fitted and fixed.

3. The method for manufacturing an embedded lightweight high-speed oscillating heat pipe grinding wheel according to claim 1, characterized in that: Here are the steps: Step 1. Pre-fabricate the grinding wheel upper end cover (1) and the grinding wheel lower end cover (5); the grinding wheel upper end cover (1) is the front end face of the grinding wheel; the grinding wheel lower end cover (5) comprises a grinding wheel inner hole (5-1), a grinding wheel rear end face (5-2) and an outer circumferential surface of the grinding wheel; Step 2. Use a copper capillary to bend a single-loop flower-shaped oscillating heat pipe of a multi-loop flower-shaped oscillating heat pipe structure in the grinding wheel, and evenly arrange more than one single-loop flower-shaped oscillating heat pipe along a 360° circle and connect end to end to form a closed structure; the hot end of each single-loop flower-shaped oscillating heat pipe is 90° to the cold end and the insulation section; the hot end contacts the working surface of the grinding wheel; and a vacuum injection port is reserved at the cold end position of one of the single-loop flower-shaped oscillating heat pipes; The elbow size of the multi-loop flower-shaped oscillating heat pipe is smaller than the width of the flow channel substrate (3), which is convenient for installation; Step 3. According to the diameter of the multi-loop flower-shaped oscillating heat pipe described in step 2, corresponding square grooves are milled on the upper and lower surfaces and the outer peripheral surface of the flow channel substrate (3) to ensure that the multi-loop flower-shaped oscillating heat pipe can be completely placed in the square groove; the outer diameter of the flow channel substrate (3) is the same as the overall outer diameter of the multi-loop flower-shaped oscillating heat pipe and is smaller than the diameter of the grinding wheel; the inner hole structure is also machined on the flow channel substrate (3); Step 4. Install the multi-loop flower-shaped oscillating heat pipe in the square groove of the flow channel substrate (3), fill the gap with thermal conductive silicone grease or silver glue to fix the heat pipe structure and improve the overall thermal conductivity; place it in an oven for drying and curing; and subsequently use brazing to braze the multi-loop flower-shaped oscillating heat pipe and the flow channel substrate into an integrated oscillating heat pipe flow channel substrate; Step 5. Vacuum and inject liquid into the multi-loop structures of the two multi-loop flower-shaped oscillating heat pipes, seal them with an ultrasonic sealing machine, and cut off the excess capillary parts; Step 6. Place the flow channel substrate (3) of the multi-loop flower-shaped oscillating heat pipe embedded in the square groove in the lower end cover (5) of the grinding wheel, fix the position with silver glue, and seal it with the upper end cover (1) of the grinding wheel and then weld it; Step 7. After welding, the embedded lightweight high-speed oscillating heat pipe grinding wheel will be subjected to corresponding turning and grinding processing to ensure that the coaxiality and flatness of the grinding wheel meet the requirements; and dynamic balancing detection will be carried out.

4. The method for manufacturing an embedded lightweight high-speed oscillating heat pipe grinding wheel according to claim 3, characterized in that: In step 6, the welding is performed by first spot welding between the upper end cover (1) of the grinding wheel and the lower end cover (5) of the grinding wheel to fix the position; after the position is fixed, the upper end cover (1) of the grinding wheel and the lower end cover (5) of the grinding wheel are welded in a whole circle by laser welding; and the embedded lightweight high-speed oscillating heat pipe grinding wheel after welding is inspected for pores, and if pores are found, repair welding is performed again.

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