Milling head cooling system

Abstract

The invention discloses a milling head cooling system, which belongs to the technical field of milling head cooling and comprises a shell, a driving shaft and a driven shaft are arranged in the shell, the driven shaft is perpendicular to the driving shaft, a first spiral bevel gear is arranged at one end of the driving shaft, the driven shaft is provided with a second spiral bevel gear meshed with the first spiral bevel gear, and an oil tank is arranged at the bottom of the shell. The bottom of the shell communicates with the oil tank. The oil tank is provided with a driving mechanism used for driving oil to circulate, an oil inlet of the driving mechanism is connected with an oil outlet of the oil tank through a hose, and an oil outlet of the driving mechanism is connected with a reversing valve through a hose. A support is further arranged in the shell and connected with the shell through a bolt, the support is arranged outside the driving shaft in a sleeving mode, a gap exists between the support and the driving shaft, the support is provided with an annular groove, a first water jacket is arranged in the annular groove, and the first water jacket is connected with the reversing valve through a hose. And a cooling nozzle is arranged outside the shell. The problem of heat dissipation of the milling head is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of milling head cooling, and particularly relates to a milling head cooling system. Background Art

[0002] A milling head is a machine tool accessory installed on a lathe for driving a milling cutter to rotate. Inside it, the rotation of a gear drives the rotation of a shaft. The problem with this kind of milling head is that when the gear rotates at a high speed for a long time, the heat dissipation method through air convection or oil bath is inefficient, and there is still a situation where the equipment may overheat, which will shorten the equipment life, increase the maintenance cost, and is prone to danger. Summary of the Invention

[0003] In view of the deficiencies of the prior art, the present invention provides a milling head cooling system.

[0004] The technical solution for the present invention to solve the above technical problems is as follows: A milling head cooling system includes a housing. Inside the housing, there are a driving shaft and a driven shaft. The driven shaft is perpendicular to the driving shaft. One end of the driving shaft is provided with a first spiral bevel gear, and the driven shaft is provided with a second spiral bevel gear meshing with the first spiral bevel gear. The bottom of the housing is provided with an oil tank, and the bottom of the housing is communicated with the oil tank; the oil tank is provided with a driving mechanism for driving the oil to circulate. The oil inlet of the driving mechanism is connected to the oil outlet of the oil tank through a hose, and the oil outlet of the driving mechanism is connected with a reversing valve through a hose; inside the housing, there is also a bracket which is connected to the housing by bolts. The bracket is sleeved outside the driving shaft, and there is a gap between the bracket and the driving shaft. The bracket is provided with an annular groove, and a first water jacket is arranged in the annular groove. The first water jacket is connected to the reversing valve through a hose; outside the housing, there is a cooling spray head which is connected to the oil inlet of the housing.

[0005] Further, there are two first water jackets, which are respectively located at the upper and lower ends of the bracket.

[0006] Further, the driving shaft is provided with a first bearing, and the position of the first water jacket corresponds to that of the first bearing.

[0007] Further, a second bearing is sleeved outside the driven shaft, and a second water jacket corresponding to the position of the second bearing is arranged outside the driven shaft.

[0008] Further, both the first water jacket and the second water jacket are internally provided with zigzag grooves, so that the oil flows through the first water jacket and the second water jacket along the zigzag grooves.

[0009] Further, the cooling spray head is connected to the oil inlet of the housing through a universal hose. The cooling spray head is internally provided with an air compressor, which can make the oil pass through the universal hose at a high speed to form an oil mist.

[0010] Furthermore, the driving mechanism includes a gear pump and a motor connected to the gear pump. The oil outlet at the bottom of the fuel tank is connected to the inlet of the gear pump through a hose, and the outlet of the gear pump is connected to a reversing valve through a hose.

[0011] Furthermore, the fuel tank is provided with a liquid level sensor, a single-chip microcomputer and a buzzer. The liquid level sensor is electrically connected to the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the buzzer. When the liquid level sensor detects a signal, it transmits the signal to the single-chip microcomputer. After the single-chip microcomputer processes the signal, it transmits the signal to the buzzer, and the buzzer emits an alarm sound when it receives the signal.

[0012] Furthermore, the fuel tank is also provided with a temperature sensor for detecting the oil temperature in the fuel tank, and the temperature sensor is electrically connected to the single-chip microcomputer.

[0013] In summary, compared with the prior art, the beneficial effects of the above technical solutions are as follows: (1) During the process of cooling the internal mechanism of the milling head, the cooling nozzle can provide a relatively high speed for the oil by using the built-in air compressor. The universal hose can make the oil transfer between the cooling nozzle and the milling head more stable to adapt to various scenarios. At the same time, the relatively large contact area can improve the oil cooling effect. The high-speed oil sprayed by the cooling nozzle forms an oil mist after passing through the universal hose, which can greatly expand the contact area between the oil and mechanisms such as gears without causing a large resistance. While ensuring good heat dissipation of the milling head, a relatively high working efficiency can be maintained. (2) The water jacket is arranged outside the bearing, providing good heat dissipation conditions. The received oil will be temporarily stored at the bottom of the fuel tank. The gear pump driven by the motor will transport the oil to the cooling nozzle through a hose, and the oil in the water jacket will eventually also enter the fuel tank, thereby realizing the circulation of the oil, greatly achieving convenience and reducing labor costs. (3) After circulating for a period of time, the oil temperature in the fuel tank may gradually increase. At this time, the temperature sensor at the bottom of the fuel tank detects the temperature and transmits the data to the single-chip microcomputer. After being processed by the single-chip microcomputer, the single-chip microcomputer will control the buzzer to emit a beeping sound to warn the staff to stop the equipment or replace the oil according to this method. (4) The single-chip microcomputer and the reversing valve are fixed on the side of the milling head, the sensors and the buzzer are fixed at the corresponding positions of the fuel tank, and the gear pump is fixed on the fuel tank. The above components all rotate together with the milling head, resulting in less relative movement of the entire system, making the system more stable in this way. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of a milling head cooling system according to an embodiment of the present invention Figure 1 ; Figure 2Schematic diagram of the overall structure of a milling head cooling system according to an embodiment of the present invention Figure 2 ; Figure 3 Cross-sectional view of a milling head cooling system according to an embodiment of the present invention; Figure 4 For Figure 3 Enlarged view of part A in Figure 5 Schematic diagram of a milling head cooling system according to an embodiment of the present invention highlighting the first spiral bevel gear and the second spiral bevel gear; Figure 6 Schematic diagram of the structure of the water jacket body and the periphery of a milling head cooling system according to an embodiment of the present invention; Figure 7 Schematic diagram of the structure of the water jacket body and the zigzag groove of a milling head cooling system according to an embodiment of the present invention; Figure 8 Schematic diagram of the water jacket body of a milling head cooling system according to an embodiment of the present invention.

[0015] Explanation of reference numerals: 1, housing; 2, fuel tank; 3, cooling nozzle; 4, buzzer; 5, gear pump; 7, liquid level sensor; 8, temperature sensor; 9, motor; 10, universal hose; 11, reversing valve; 12, water jacket one; 13, water jacket body; 14, zigzag groove; 15, periphery; 16, water jacket two; 17, driving shaft; 18, bearing one; 19, driven shaft; 20, bearing two; 21, first spiral bevel gear; 22, second spiral bevel gear; 23, bracket; 24, annular groove. Detailed implementation manners

[0016] The principles and features of the present invention are described below in conjunction with all the drawings. The examples given are only for explaining the present invention and are not used to limit the scope of the present invention.

[0017] An embodiment of the present invention discloses a milling head cooling system.

[0018] Referring to Figures 1 - 8 , a milling head cooling system includes a housing 1. A driving shaft 17 and a driven shaft 19 are arranged inside the housing 1. The driven shaft 19 is perpendicular to the driving shaft 17. A first spiral bevel gear 21 is arranged at one end of the driving shaft 17. The driven shaft 19 is provided with a second spiral bevel gear 22 meshing with the first spiral bevel gear 21. Through the meshing of the two bevel gears, the milling head can rotate circumferentially around the workpiece for working. The structure of the milling head is not specifically described in the embodiment of the present invention and can refer to the introduction of the inside of the milling head in the patent with the publication number CN208357885U and the invention name of a side milling head for a vertical machining center or a gantry machining center.

[0019] The milling head cooling system further includes an oil tank 2, which is located below the housing 1. An oil inlet is provided above the housing 1, and the bottom opening of the housing 1 is connected to the oil tank 2. The oil tank 2 is used to hold the oil fluid. A square groove is provided on the side of the housing 1, and the square groove is used to fix the single-chip microcomputer to achieve the self-feedback of the system.

[0020] Two small round grooves are provided on the side of the oil tank 2. The liquid level sensor 7 and the temperature sensor 8 are respectively fixed in the two small round grooves, and are respectively used to sense the liquid level and temperature of the oil. A large round groove is also provided on the side of the oil tank 2, which is used to fix the buzzer 4. Among them, both the liquid level sensor 7 and the temperature sensor 8 are electrically connected to the single-chip microcomputer, and the single-chip microcomputer is electrically connected to the buzzer 4. When the liquid level sensor 7 or the temperature sensor 8 detects that the oil fluid exceeds the threshold or the temperature exceeds the threshold, the signal is transmitted to the single-chip microcomputer. After the single-chip microcomputer processes the signal, it is sent to the buzzer 4, and the staff is reminded to handle it through the alarm sound emitted by the buzzer 4.

[0021] The single-chip microcomputer and the reversing valve 11 are fixed to the housing 1, the liquid level sensor 7, the temperature sensor 8 and the buzzer 4 are fixed in the corresponding round grooves of the oil tank 2, and the gear pump 5 is fixed to the oil tank 2. The above components all rotate with the milling head, so that there is less relative movement in the whole system, and the system is made more stable by this method.

[0022] The oil tank 2 is also provided with a driving mechanism, which is used to drive the circulation of the oil fluid in the oil tank 2. Specifically, the driving mechanism includes a gear pump 5 and a motor 9. The gear pump 5 is connected to the motor 9, and the motor 9 drives the gear pump 5 to realize the circulation of the oil fluid in the oil tank 2.

[0023] The oil tank 2 is provided with an oil outlet. The oil outlet of the oil tank 2 is connected to the inlet of the gear pump 5 through a hose. The outlet of the gear pump 5 is connected to the reversing valve 11 through a hose. The reversing valve 11 is respectively connected to the cooling nozzle 3 and the first water jacket 12 through hoses. Specifically, the cooling nozzle 3 is located outside the housing 1, and the cooling nozzle 3 is connected to the oil inlet of the housing 1 through a universal hose 10. The motor 9 drives the gear pump 5 to pump and transport the oil fluid in the oil tank 2 to the cooling nozzle 3, and the oil fluid is sprayed into the milling head through the cooling nozzle 3. Among them, in order to improve the cooling effect of the oil fluid, an air compressor is installed in the cooling nozzle 3, so that the oil fluid can quickly form an oil mist through the universal hose 10 to enter the milling head.

[0024] The driving shaft 17 and the driven shaft 19 inside the housing 1 are both provided with bearings, namely, bearing 18 and bearing 20. In order to realize the cooling of the milling head bearing, a bracket 23 is provided inside the housing. The bracket 23 is fixed to the housing by bolts. The bracket 23 is sleeved on the outside of the bearing 18, and there is a gap between the bracket 23 and the driving shaft 17. The bracket 23 is provided with an annular groove 24 along its circumference. There are two annular grooves 24, which are respectively located at the upper and lower ends of the bracket 23. A water jacket 12 is embedded in each annular groove 24. The position of the water jacket 12 corresponds to the position of the bearing 18. The two water jackets 12 are connected by a hose. After the oil is powered by the gear pump 5, it passes through each water jacket 12 and finally enters the oil tank 2 again through the reserved hole of the housing 1 to realize the circulation of the oil.

[0025] A water jacket 16 corresponding to the position of the bearing 20 is also provided inside the housing 1. The water jacket 16 is located outside the driven shaft 19. The water jacket 16 is connected to the water jacket 12 through a hose, and the bearing 20 is cooled by circulating the oil in the water jacket 16.

[0026] Reference Figures 6 - 8 , the inner parts of the water jacket 12 and the water jacket 2 16 are both provided with folding grooves 14, and the structures of the water jacket 12 and the water jacket 2 16 are the same. Specifically, taking the water jacket 12 as an example, the water jacket 12 includes a water jacket body 13 and a peripheral 15, the outer part of the water jacket body 13 is provided with a continuous folding groove 14, and the peripheral 15 is located outside the water jacket body 13, which is equivalent to the peripheral 15 being arranged outside the folding groove 14, and the peripheral 15 is fixedly connected to the water jacket body 13, so that the oil circulates along the folding groove 14 to cool the bearing.

[0027] The implementation principle of a milling head cooling system provided by an embodiment of the present invention is: In the process of cooling the internal mechanism of the milling head, the cooling nozzle 3 uses the built-in air compressor to provide a higher speed for the oil. The universal hose 10 can make the oil transfer between the cooling nozzle 3 and the milling head more stable to adapt to various scenarios. At the same time, the larger contact area can improve the oil cooling effect; the high-speed oil sprayed by the cooling nozzle 3 passes through the universal hose 10 to form oil mist, which can greatly expand the contact area between the oil and the gears and other mechanisms without causing greater resistance. While ensuring better heat dissipation of the milling head, it can maintain a higher working efficiency; the water jacket is arranged outside the bearing to provide better heat dissipation conditions; and the oil tank 2 temporarily stores the received oil in the bottom oil tank 2, and the gear pump 5 driven by the motor 9 will transport the oil to the cooling nozzle 3 through the hose, and the oil in the water jacket will eventually enter the oil tank 2, thereby realizing the circulation of the oil, greatly realizing convenience and reducing labor costs; After circulating for a period of time, the temperature of the oil in the fuel tank 2 may gradually increase. At this time, the temperature sensor 8 at the bottom detects the temperature of the oil and transmits the data to the single-chip microcomputer. After processing the data, the single-chip microcomputer will control the buzzer 4 to emit a beeping sound, and in this way, it will warn the staff to stop the equipment or replace the oil.

[0028] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A milling head cooling system, comprising a housing (1), wherein a driving shaft (17) and a driven shaft (19) are arranged inside the housing (1), the driven shaft (19) is perpendicular to the driving shaft (17), a first spiral bevel gear (21) is arranged at one end of the driving shaft (17), and a second spiral bevel gear (22) meshing with the first spiral bevel gear (21) is arranged on the driven shaft (19), characterized in that, The bottom of the housing (1) is provided with an oil tank (2), and the bottom of the housing (1) is communicated with the oil tank (2); the oil tank (2) is provided with a driving mechanism for driving the oil liquid to circulate, the oil inlet of the driving mechanism is connected with the oil outlet of the oil tank (2) through a hose, and the oil outlet of the driving mechanism is connected with a reversing valve (11) through a hose; a bracket (23) is further arranged inside the housing (1), the bracket (23) is connected with the housing (1) through bolts, the bracket (23) is sleeved outside the driving shaft (17), and there is a spacing between the bracket (23) and the driving shaft (17), the bracket (23) is provided with an annular groove (24), and a first water jacket (12) is arranged in the annular groove (24), and the first water jacket (12) is connected with the reversing valve (11) through a hose; a cooling spray head (3) is arranged outside the housing (1), and the cooling spray head (3) is connected with the oil inlet of the housing (1).

2. The milling head cooling system according to claim 1, characterized in that: There are two first water jackets (12), which are respectively located at the upper and lower ends of the bracket (23).

3. The milling head cooling system according to claim 1, wherein: A first bearing (18) is arranged on the driving shaft (17), and the position of the first water jacket (12) corresponds to that of the first bearing (18).

4. A milling head cooling system according to claim 1, characterized in that: A second bearing (20) is sleeved outside the driven shaft (19), and a second water jacket (16) corresponding to the second bearing (20) is arranged outside the driven shaft (19).

5. The milling head cooling system according to claim 4, characterized in that: Folding grooves (14) are formed inside both the first water jacket (12) and the second water jacket (16), so that the oil liquid passes through the first water jacket (12) and the second water jacket (16) along the folding grooves (14).

6. The milling head cooling system according to claim 1, wherein: The cooling spray head (3) is connected with the oil inlet of the housing (1) through a universal hose (10), and an air compressor is arranged inside the cooling spray head (3).

7. The milling head cooling system according to claim 1, wherein: The driving mechanism includes a gear pump (5) and a motor (9) connected to the gear pump (5), the oil outlet at the bottom of the oil tank (2) is connected with the oil inlet of the gear pump (5) through a hose, and the oil outlet of the gear pump (5) is connected with the reversing valve (11) through a hose.

8. The milling head cooling system according to claim 1, characterized in that: The oil tank (2) is provided with a liquid level sensor (7), a single-chip microcomputer and a buzzer (4), the liquid level sensor (7) is electrically connected to the single-chip microcomputer, the single-chip microcomputer is electrically connected to the buzzer (4), when the liquid level sensor (7) detects a signal, the signal is transmitted to the single-chip microcomputer, the single-chip microcomputer processes the signal and then transmits it to the buzzer (4), and the buzzer (4) emits an alarm sound when receiving the signal.

9. The milling head cooling system according to claim 8, characterized in that: The oil tank (2) is further provided with a temperature sensor (8), the temperature sensor (8) is used to detect the oil temperature in the oil tank (2), and the temperature sensor (8) is electrically connected to the single-chip microcomputer.

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