Cooling system of right-angle milling head

Abstract

The invention relates to the technical field of right-angle milling head cooling, and discloses a right-angle milling head cooling system which comprises a liquid storage tank and further comprises a pumping mechanism, a first cooling liquid pipeline, a valve and a cooling component, a liquid inlet of the pumping mechanism is communicated with a liquid outlet of the liquid storage tank through a pipeline, and a liquid outlet of the pumping mechanism is connected with the valve; the valve is communicated with the first cooling liquid pipeline, the cooling component comprises a first motor, a semiconductor chilling plate, fan blades, a second cooling liquid pipeline and a fixing frame, the fixing frame is used for being installed on a shell of the right-angle milling head, the first motor is installed on the fixing frame, the output end of the first motor is connected with the fan blades, and the semiconductor chilling plate is arranged between the fan blades and the first motor. The hot end of the semiconductor chilling plate is provided with a second cooling liquid pipeline, and the second cooling liquid pipeline communicates with the first cooling liquid pipeline. And the fan blades are matched with the semiconductor chilling plates, so that the right-angle milling head is cooled, and the air cooling effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of right-angle milling head cooling, and in particular to a cooling system for a right-angle milling head. Background Art

[0002] The milling head is a machine tool accessory installed on a lathe to drive the milling cutter to rotate. The rotation of the gear inside the milling head drives the rotation of the shaft. Currently, the problem with this milling head is that the high-speed rotation of the gears for a long time will generate a large amount of heat, resulting in lubrication failure, accelerated gear wear, and shortened gear service life. The existing technology uses an oil bath to dissipate heat from the system, but there is a problem of insufficient heat dissipation efficiency. The milling head still overheats, and the stirring of grease during the gear transmission process will bring greater resistance, which will cause low transmission efficiency of the milling head, shorten its service life, increase maintenance costs, and be prone to danger. Summary of the Invention

[0003] In view of the existing technical problems, the present invention provides a cooling system for a right-angle milling head.

[0004] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: A cooling system for a right-angle milling head, comprising a liquid storage tank, a pumping mechanism, a coolant pipe 1, a valve, a single-chip microcomputer and a cooling component, the liquid inlet of the pumping mechanism being connected to the liquid outlet of the liquid storage tank through a pipe, the liquid outlet of the pumping mechanism being connected to the valve, the valve being connected to the coolant pipe 1, the cooling component comprising a motor 1, a semiconductor refrigeration plate, a fan blade, a coolant pipe 2 and a fixing bracket, the fixing bracket being used to be installed on the housing of the right-angle milling head, the motor 1 being installed on the fixing bracket, the output end of the motor 1 being connected to the fan blade, the semiconductor refrigeration plate being provided between the fan blade and the motor 1, the hot end of the semiconductor refrigeration plate being provided with the coolant pipe 2, the coolant pipe 2 being connected to the coolant pipe 1, and the single-chip microcomputer being communicatively connected to the motor 1 and the semiconductor refrigeration plate respectively.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows: Preferably, the fixing frame is a hollow frame, and a gap is provided between the semiconductor refrigeration plate and the inner wall of the fixing frame.

[0006] Preferably, a through slot is provided on the shell, and the fixing bracket is installed in the through slot.

[0007] Preferably, a first cooling component is included, the first cooling component is installed at a first position to be cooled, and the first cooling component is used to cool the second bearing installed on the driven shaft in the housing.

[0008] Preferably, it further includes a second cooling component, which is installed at a second cooling position and is used to cool a bearing 1 installed on the driving shaft in the housing.

[0009] Preferably, a third cooling component is included, which is installed in a third cooling position. The third cooling component is used to cool the meshing point of the first spiral bevel gear and the second spiral bevel gear in the shell. The first spiral bevel gear is installed on the driving shaft and the second spiral bevel gear is installed on the driven shaft.

[0010] Preferably, the first cooling component, the second cooling component and the third cooling component are connected in series or in parallel through pipelines.

[0011] Preferably, a vent is provided on the shell, an arc-shaped groove is installed at the vent, and the arc-shaped groove extends upward.

[0012] Preferably, the pumping mechanism includes a gear pump and a second motor, the output end of the second motor is connected to the gear pump, one end of the gear pump is connected to the liquid storage tank, and the other end is connected to the valve.

[0013] Preferably, an electronic thermometer is installed on the housing, and the electronic thermometer is communicatively connected to the single chip microcomputer.

[0014] The beneficial effects of the present invention are: (1) Through the cooperation of fan blades and semiconductor cooling sheets, the key heat sources of the right-angle milling head are cooled in a targeted manner, thereby improving the air-cooling effect; the fan blades are driven to rotate by direct current. Since the semiconductor cooling sheets are loaded on the outside of the fan blades, there is a temperature difference between the cold end and the hot end of the semiconductor cooling sheets. The cold end is arranged close to the fan blades to ensure that the fan blades blow out cold air; at the same time, the hot end of the semiconductor cooling sheet is fixedly attached with a coolant pipe to cool the semiconductor cooling sheet, realizing double-circulation heat dissipation and further improving the heat dissipation effect of the right-angle milling head.

[0015] (2) The semiconductor cooling fins have no moving parts, resulting in a low failure rate and reduced maintenance costs. At the same time, the fan blades are integrated with the semiconductor cooling fins and cooling pipes, which are directly embedded in the housing and correspond to the positions of the bearings and gears. No additional heat dissipation space is required, which improves the compactness of the overall structure and reduces space occupation.

[0016] (3) The vents on the shell increase the air circulation effect and further improve the heat dissipation effect.

[0017] (4) The gear pump is driven by motor 2 to transport the coolant in the liquid storage tank to the coolant pipe through a hose. After the coolant pipe cools the semiconductor refrigeration plate, it is connected to the liquid storage tank to form a cooling circulation loop, thereby realizing the circulation of the coolant, improving the cooling effect, simplifying the operation, and reducing labor costs.

[0018] (5) The coolant temperature, semiconductor cold end temperature and ambient temperature are monitored in real time by an electronic thermometer, and the signal is transmitted to the single chip microcomputer. The valve flow and the current of the semiconductor refrigeration plate are dynamically adjusted by the single chip microcomputer, thereby enhancing the temperature control accuracy; (6) The cooling system uses cooling components to perform air-cooled convection heat transfer inside the milling head and liquid cooling for the semiconductor part. Compared with oil spray cooling of the entire milling head, the cooling system can not only reduce energy consumption, but also solve the resistance caused by oil spray to the gear transmission, thereby improving the gear transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention; Figure 2 A schematic diagram of the cooling system of the present invention when installed on a right-angle milling head; Figure 3 This is a schematic diagram of the installation position of the first cooling component of the present invention; Figure 4 It is a cross-sectional schematic diagram of the right-angle milling head of the present invention; Figure 5 Schematic diagram of the meshing of the first spiral bevel gear and the second spiral bevel gear of the present invention; Figure 6 is a schematic diagram of a cooling component of the present invention; Figure 7 This is a schematic diagram of the cooling component of the present invention from another angle.

[0020] The accompanying drawings are marked as follows: 1. Shell; 2. First cooling component; 3. Second cooling component; 4. Third cooling component; 5. Motor 1; 6. Semiconductor refrigeration plate; 7. Coolant pipe 1; 8. Fan blade; 9. Coolant pipe 2; 10. Electronic thermometer; 11. Liquid storage tank; 12. Gear pump; 13. Motor 2; 14. Valve; 15. Wire; 16. Single-chip microcomputer; 17. Driving shaft; 18. Driven shaft; 19. Bearing 1; 20. Bearing 2; 21. First spiral bevel gear; 22. Second spiral bevel gear; 23. Bracket; 24. Arc groove; 25. Fixing frame; 26. Battery. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solutions of the present invention, 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 embodiments described are only 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 efforts should fall within the scope of protection of the present invention.

[0022] It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. The terms "vertical," "upper," "lower," and "horizontal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0023] like Figures 1 to 7As shown, the present invention discloses a cooling system for a right-angle milling head, including a liquid storage tank 11, which is used to store coolant, which can be cooling water or cooling oil. It also includes a pumping mechanism, a coolant pipeline 7, a valve 14, a single-chip microcomputer 16 and a cooling component. The liquid inlet of the pumping mechanism is connected to the liquid outlet of the liquid storage tank 11 through a pipeline, the liquid outlet of the pumping mechanism is connected to the valve 14, and the valve 14 is connected to the coolant pipeline 7. The cooling component includes a motor 5, a semiconductor refrigeration plate 6, a fan blade 8, a coolant pipeline 9 and a fixing bracket 25. The single-chip microcomputer 16 and the valve 14 are mounted on the side of the shell 1. The fixing bracket 25 is used to be mounted on the shell 1 of the right-angle milling head. The motor 5 is mounted on the fixing bracket 25. The output end of the motor 5 is connected to the fan blade 8. A semiconductor refrigeration plate 6 is provided between the fan blade 8 and the motor 5. The cold end of the semiconductor refrigeration plate 6 is in contact with the fan blade 8, thereby reducing the temperature of the fan blade 8 and allowing the fan blade 8 to blow cold air to the part to be cooled of the shell 1, thereby improving the cooling effect. The hot end of the semiconductor cooling element 6 is provided with a coolant pipe 29, which communicates with coolant pipe 17. The coolant returns through coolant pipe 17 to a liquid reservoir 11, achieving a circulating coolant flow. Liquid reservoir 11 is mounted on the bottom of the housing 1. A single-chip microcomputer 16 is connected to the semiconductor cooling element 6 and motor 15 via wires 15. The rotation of fan blades 8 generates airflow, which cools and dissipates heat from the key parts of the right-angle milling head. During operation, the semiconductor cooling element 6 absorbs heat from the fan blades 8 at its cold end, while the hot end dissipates heat through the coolant in coolant pipe 29. During the circulation process, the coolant continuously removes heat from the hot end, thereby maintaining a constant coolness at the cold end of the semiconductor cooling element 6. This cooling system is compact and easy to install, suitable for various right-angle milling heads, and effectively improves the head's service life and processing efficiency. The fan blades 8 are spiral, forward-inclined blades made of aluminum alloy, and motor 15 uses an R-310 micro DC high-speed motor, ensuring effective cooling and a compact design.

[0024] Among them, a driving shaft 17, a driven shaft 18 and a bracket 23 are provided inside the shell 1 of the right-angle milling head. The driven shaft 18 is perpendicular to the driving shaft 17, and the bracket 23 is installed on the shell 1. The bracket 23 is sleeved on the driving shaft 17, and there is a distance between the bracket 23 and the driving shaft 17. A first spiral bevel gear 21 is provided at one end of the driving shaft 17, and the driven shaft 18 is provided with a second spiral bevel gear 22 that meshes with the first spiral bevel gear 21. The milling head can rotate around the axial direction of the workpiece through the engagement of the first spiral bevel gear 21 with the second spiral bevel gear 22. The right-angle milling head adopts the existing structure and will not be repeated.

[0025] Among them, the semiconductor cooling plate 6, also known as a thermoelectric cooler, can control the transfer of heat from one side to the other side by the direction of the current, thereby achieving a heating or cooling effect. In this embodiment, the end of the semiconductor cooling plate 6 close to the fan blade 8 is the cold end, and the other end opposite the cold end is the hot end. Direct current is supplied to the semiconductor cooling plate 6 via the battery 26, thereby forming a temperature difference between the cold end and the hot end. At the same time, because the hot end of the semiconductor cooling plate 6 is attached to the coolant pipe 29 through the fixing plate, the hot end of the semiconductor cooling plate 6 can be cooled. In addition, the semiconductor cooling plate 6 cooperates with the fan blade 8 to realize a dual-circulation heat dissipation structure, further improving the heat dissipation effect of the right-angle milling head.

[0026] In this embodiment, the mounting frame 25 is a hollow frame. A gap is provided between the semiconductor cooling plate 6 and the inner wall of the mounting frame 25. This gap allows the fan blades 8 to direct air to the location to be cooled, improving air flow. It also allows the heat generated by the semiconductor cooling plate 6 during operation to be dissipated more effectively through the coolant pipe 2 9. Furthermore, the gap provides a buffer space, reducing the stress generated by the semiconductor cooling plate 6 due to thermal expansion and contraction during operation, thereby increasing its service life.

[0027] Furthermore, through holes are provided at both ends of the fixing frame 25, and both ends of the coolant pipe 29 are installed on the through holes. The contact point between the coolant pipe 29 and the semiconductor refrigeration plate 6 is bent, specifically in a U-shape, to increase the contact area with the semiconductor refrigeration plate 6, improve the cooling effect, and form an avoidance zone, so that the motor 1 5 passes through the avoidance zone and is connected to the fan blade 8, ensuring the normal operation of the fan blade 8.

[0028] In this embodiment, the housing 1 is provided with a through-slot, into which a fixing bracket 25 is mounted. Fixing bracket 25 is secured within the through-slot via bolts or an interference fit, ensuring a stable and secure attachment of the cooling component to the housing 1 of the right-angle milling head. Attaching fixing bracket 25 via the through-slot not only facilitates removal and maintenance of the cooling component but also ensures a tight fit between the cooling component and the housing 1, enhancing heat dissipation. Furthermore, the through-slot guides airflow, allowing cooling air to flow more smoothly through the cooling area, further improving heat dissipation efficiency.

[0029] In this embodiment, the cooling system includes a first cooling component 2, mounted at a first cooling location. This component is used to cool bearing 20, which is mounted on the driven shaft 18 within the housing 1. Bearing 20 generates a significant amount of heat during operation of the right-angle milling head. The provision of the first cooling component 2 effectively cools bearing 20, preventing overheating and damage. The first cooling component 2 is connected to coolant pipe 1 7 and the reservoir 11 via piping, enabling coolant circulation.

[0030] In this embodiment, the cooling system also includes a second cooling component 3, which is installed in the second cooling position. The second cooling component 3 is used to cool the bearing 19 installed on the driving shaft 17 in the housing 1. When the right-angle milling head is working, the bearing 19 will generate a large amount of heat. If the heat is not dissipated in time, it may cause the bearing to overheat and be damaged, thereby affecting the normal operation of the right-angle milling head. Therefore, the setting of the second cooling component 3 can effectively cool the bearing 19 and ensure its normal operation. At the same time, the second cooling component 3 is connected to the coolant pipe 7 and the liquid storage tank 11 through a pipeline to form a cooling circulation loop, realize the recycling of the coolant, and improve the cooling efficiency.

[0031] In this embodiment, the cooling system also includes a third cooling component 4, which is installed in a third cooling position. The third cooling component 4 is used to cool the meshing point of the first spiral bevel gear 21 and the second spiral bevel gear 22 in the housing 1. The first spiral bevel gear 21 is installed on the driving shaft 17, and the second spiral bevel gear 22 is installed on the driven shaft 18. The meshing point of the first spiral bevel gear 21 and the second spiral bevel gear 22 is an important part when the right-angle milling head is working and is also one of the main places where heat is generated. The provision of the third cooling component 4 can effectively cool the meshing point to prevent it from overheating and affecting the normal operation of the right-angle milling head. The third cooling component 4 is also connected to the coolant pipe 7 and the liquid storage tank 11 through a pipeline to realize the recycling of the coolant. Since the lubricating grease lubricates the gear meshing point and the bearing, when the fan blades 8 blow air inward, the grease will not flow out from the fixing frame 25.

[0032] Furthermore, the first cooling element 2, the second cooling element 3, and the third cooling element 4 have identical structures and are connected in series or in parallel via piping. When connected in series, coolant flows through each cooling element sequentially, achieving sequential cooling; when connected in parallel, coolant flows through each cooling element individually, achieving simultaneous cooling. Depending on the cooling requirements and the structural characteristics of the right-angle milling head, different connection methods can be selected to achieve the optimal cooling effect.

[0033] In this embodiment, the housing 1 is provided with two vents, each of which is fitted with an upwardly extending arcuate groove 24 having a U-shaped cross-section. The provision of the vents increases airflow and improves heat dissipation. The arcuate groove 24 guides airflow, allowing cooling air to flow more smoothly through the cooling area, further enhancing heat dissipation efficiency. Furthermore, the arcuate groove 24 serves to store grease within the housing 1, preventing it from spilling and ensuring lubrication of the components within the housing 1.

[0034] In this embodiment, the pumping mechanism includes a gear pump 12 and a second motor 13. The output end of the second motor 13 is connected to the gear pump 12. One end of the gear pump 12 is connected to the liquid storage tank 11, and the other end is connected to the valve 14. When the second motor 13 is in operation, it drives the gear pump 12 to operate, thereby driving the coolant in the liquid storage tank 11 to circulate, improving the cooling effect.

[0035] In this embodiment, an electronic thermometer 10 is mounted on the housing 1. Specifically, the electronic thermometer 10 is fixed between the microcontroller 16 and the valve 14 and is in communication with the microcontroller 16. The microcontroller 16 dynamically adjusts the flow rate of the valve 14 and the current flowing through the semiconductor cooling element 6 based on the coolant temperature, semiconductor cold end temperature, and ambient temperature monitored in real time by the electronic thermometer 10, ensuring optimal heat dissipation from the cooling system. Specifically, the electronic thermometer 10 is mounted on the housing 1 and connected to thermocouples via wires 15. The thermocouples are in contact with each semiconductor cooling element 6 and the coolant pipe 2 9, measuring the temperature of each semiconductor cooling element 6 and the coolant pipe 2 9. When the temperature of the coolant pipe 2 9 exceeds the upper limit, the electronic thermometer 10 sends a signal to the microcontroller 16, which controls the motor 1 5 to increase its speed, thereby improving the cooling effect of the fan blades 8 on the cooling area. Simultaneously, the microcontroller 16 controls the battery 26 to increase the current flowing into the semiconductor cooling element 6, further enhancing the cooling effect of the semiconductor cooling element 6.

[0036] Furthermore, the electronic thermometer 10 is also connected to the alarm for communication, and the alarm sounds an alarm to remind the staff to stop the right-angle milling head or replace the coolant.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cooling system for a right-angle milling head, comprising a liquid storage tank (11), characterized in that: The invention also includes a pumping mechanism, a cooling liquid pipeline (7), a valve (14), a single chip microcomputer (16) and a cooling component. The liquid inlet of the pumping mechanism is connected to the liquid outlet of the liquid storage tank (11) through a pipeline. The liquid outlet of the pumping mechanism is connected to the valve (14). The valve (14) is connected to the cooling liquid pipeline (7). The cooling component includes a motor (5), a semiconductor cooling plate (6), a fan blade (8), a cooling liquid pipeline (9) and a fixing frame (25). The fixing frame (25) is used to be installed on the straight On the housing (1) of the angle milling head, the motor 1 (5) is installed on the fixing frame (25), the output end of the motor 1 (5) is connected to the fan blade (8), the semiconductor cooling plate (6) is provided between the fan blade (8) and the motor 1 (5), the hot end of the semiconductor cooling plate (6) is provided with the coolant pipe 2 (9), the coolant pipe 2 (9) is connected to the coolant pipe 1 (7), and the single chip computer (16) is respectively connected to the motor 1 (5) and the semiconductor cooling plate (6).

2. The cooling system of the right-angle milling head according to claim 1, characterized in that: The fixing frame (25) is a hollow frame, and a gap is provided between the semiconductor cooling plate (6) and the inner wall of the fixing frame (25).

3. The cooling system of the right-angle milling head according to claim 1 or 2, characterized in that: The housing (1) is provided with a through slot, and the fixing frame (25) is installed in the through slot.

4. The cooling system of the right-angle milling head according to claim 1, characterized in that: It comprises a first cooling component (2), the first cooling component (2) being installed at a first position to be cooled, and the first cooling component (2) being used to cool a second bearing (20) installed on a driven shaft (18) in a housing (1).

5. The cooling system of the right-angle milling head according to claim 4, characterized in that: It also includes a second cooling component (3), which is installed at a second cooling position. The second cooling component (3) is used to cool a bearing 1 (19) installed on the driving shaft (17) in the housing (1).

6. The cooling system of the right-angle milling head according to claim 5, characterized in that: The invention also includes a third cooling component (4), which is installed at a third position to be cooled. The third cooling component (4) is used to cool the meshing portion of the first spiral bevel gear (21) and the second spiral bevel gear (22) in the housing (1), wherein the first spiral bevel gear (21) is installed on the driving shaft (17), and the second spiral bevel gear (22) is installed on the driven shaft (18).

7. The cooling system of the right-angle milling head according to claim 6, characterized in that: The first cooling component (2), the second cooling component (3) and the third cooling component (4) are connected in series or in parallel via pipelines.

8. The cooling system of the right-angle milling head according to claim 1, characterized in that: The housing (1) is provided with a vent, and an arc-shaped groove (24) is installed at the vent, and the arc-shaped groove (24) extends upward.

9. The cooling system of the right-angle milling head according to claim 4, characterized in that: The pumping mechanism comprises a gear pump (12) and a second motor (13), wherein the output end of the second motor (13) is connected to the gear pump (12), one end of the gear pump (12) is connected to the liquid storage tank (11), and the other end is connected to the valve (14).

10. The cooling system of the right-angle milling head according to claim 1, characterized in that: An electronic thermometer (10) is mounted on the housing (1), and the electronic thermometer (10) is communicatively connected to the single-chip computer (16).

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