A five-axis vertical-horizontal conversion milling head with cooling function

Abstract

The present invention discloses a five-axis vertical-horizontal conversion milling head with a cooling function, belonging to the technical field of numerically controlled machine tools, comprising: a milling head housing, a spindle, a motor, a wiring tube, an oscillating head, a mounting plate, and a milling head housing cover. The water storage tank is annular and fixedly installed in the oscillating head. The inner ring of the water storage tank and the outer ring of the water storage tank form a water storage cavity. The spindle passes through the inner ring of the water storage tank and leaves a gap between the spindle and the inner ring of the water storage tank. The water storage tank is provided with an opening on the side close to the milling cutter. A turntable is provided at the opening of the water storage tank and is rotatably sealed with the water storage tank. The turntable is provided with a plurality of water outlets, which are connected to the cavity. The water outlets are arranged obliquely along the direction of the water storage tank toward the turntable and all point to the milling cutter. A water inlet pipe is provided on the side of the water storage tank away from the turntable. The present invention can spray coolant on the milling head in the opposite direction when the milling head is working, thereby reducing the temperature of the milling head. By spraying water, the vibration energy of the fixture is absorbed, thereby improving the processing accuracy.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled machine tools, in particular to a five-axis vertical-horizontal conversion milling head with a cooling function. Background Art

[0002] At present, five-axis CNC machine tools are widely used in industry, including ships, industrial impellers and other industrial fields. During use, the use of milling heads is inevitable.

[0003] When existing five-axis gantry milling machines process workpieces, the friction between the workpiece and the tool generates a large amount of heat. In order to avoid the deformation of the workpiece caused by the increase in heat and the impact on the processing accuracy, the workpiece needs to be cooled in time, especially on precision machine tools, where good cooling is even more important.

[0004] The Chinese patent application publication number CN214815191U "A five-axis vertical and horizontal conversion milling head with a protective function" discloses a five-axis vertical and horizontal conversion milling head with a protective function, which has the effect of protecting the circuit and the processed workpiece. The separate milling head box cooperates with the main shaft, and the main shaft is connected to the motor to form a basic cutting structure. The main shaft rotates around the axis of rotation. A wiring bracket is provided on the main shaft, and a spherical hinge lower seat is provided on the wiring bracket. The wiring bracket is provided on the lower seat of the spherical hinge bracket. The other end of the wiring bracket is connected to a spherical hinge upper seat, and the spherical hinge upper seat is provided on the wiring box. The milling head box is installed on the mounting plate, and a socket assembly is installed at the rear of the mounting plate to enable it to be installed on the machine tool. The wiring box is installed on the upper end of the mounting plate. This connection method prevents the wiring from shaking freely and interfering with the rotational movement of the spindle. At the same time, it also protects the safety of the wiring and prevents leakage caused by corrosion and weathering.

[0005] However, the above structure may cause workpiece deformation due to heat increase, affecting the processing accuracy. Summary of the Invention

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A five-axis vertical-horizontal conversion milling head with a cooling function, the conversion milling head includes a swing assembly, the swing assembly includes a milling head box, a spindle, a spindle motor, a wiring tube, a swing head, a mounting plate and a milling head box cover, the milling head box is arranged on the mounting plate, the milling head box cover is arranged on the milling head box, the swing head is arranged on the lower surface of the milling head box, the spindle motor is arranged on the swing head, and the spindle is arranged on the spindle motor. The five-axis vertical-horizontal conversion milling head with a cooling function includes:

[0008] A water storage tank, the water storage tank is annular and fixedly installed in the oscillating head, the inner ring of the water storage tank and the outer ring of the water storage tank form a water storage cavity, the main shaft passes through the inner ring of the water storage tank, and a gap is left between the main shaft and the inner ring of the water storage tank, and an opening is provided on the side of the water storage tank close to the milling cutter;

[0009] A turntable is provided at the opening of the water storage bin and is rotatably sealed with the water storage bin. The turntable is provided with a plurality of water outlet holes, which are in communication with the cavity. The water outlet holes are inclined along the water storage bin toward the turntable and point toward the milling cutter.

[0010] A water inlet pipe is arranged on a side of the water storage bin away from the turntable, one end of the water inlet pipe is connected to the water storage bin, and the other end is connected to the water supply pipeline.

[0011] Furthermore, the outer ring of the water storage bin is provided with an external thread, and the inner ring of the swing head is provided with an internal thread corresponding to the outer ring of the water storage bin.

[0012] Furthermore, the inclination direction of the water outlet is the same as the rotation direction of the main shaft.

[0013] Furthermore, a refrigeration unit is provided on the water supply pipeline, and the refrigeration unit includes:

[0014] A water tank, one side of which is fixedly connected to a first connecting pipe, the other end of which is connected to a user-side water supply pipeline;

[0015] A refrigeration component is provided on the upper side of the water tank and is used to cool the water output from the water tank;

[0016] a cooling pipe, the cooling pipe being laid in the refrigeration component, the first end of the cooling pipe penetrating the lower surface of the refrigeration component and extending into the inner cavity of the water tank, and the second end of the cooling pipe penetrating the upper surface of the refrigeration component;

[0017] a second connecting pipe, a first end of the second connecting pipe being connected to the second end of the cooling pipe;

[0018] A water pump, wherein the water inlet end of the water pump is connected to the second end of the second connecting pipe, and the water outlet end of the water pump is connected to the water inlet pipe.

[0019] Furthermore, the refrigeration component includes:

[0020] An electronic refrigeration sheet, the electronic refrigeration sheet comprising a cooling surface and a heating surface; the electronic refrigeration sheet is fixedly mounted on one side of the refrigeration component, the cooling surface of the electronic refrigeration sheet is located inside the refrigeration component, and the heating surface of the electronic refrigeration sheet is located outside the refrigeration component;

[0021] The cooling pipe is fixedly mounted on the cooling surface of the electronic refrigeration plate, and the cooling pipe is serpentine.

[0022] A fan is fixedly mounted on the heating surface of the electronic refrigeration plate.

[0023] Furthermore, the water outlet holes are evenly arranged along the circumference of the turntable, the water outlet holes are of a tapered structure, and the large-diameter end of the water outlet holes is located on one side of the water storage tank.

[0024] Furthermore, a spiral channel communicating with the water outlet hole is circumferentially provided on the inner wall of the water outlet hole, and the cutout of the spiral channel is located on a side away from the center of the water outlet hole.

[0025] Furthermore, a plurality of hemispherical grooves are provided in the water outlet.

[0026] Beneficial effects:

[0027] The present invention provides a five-axis vertical-horizontal conversion milling head with a cooling function. The water outlet holes are arranged on the turntable at an angle. The water flow drives the turntable to rotate counterclockwise, and the water is sprayed on the milling head. When the milling head is working, the turntable can spray coolant to the milling head in the opposite direction to reduce the temperature of the milling head; by spraying water, the vibration energy of the fixture is absorbed, thereby improving the processing accuracy.

[0028] By using the electronic refrigeration plate and the cooling tube in conjunction, the temperature of the coolant can be quickly reduced, and the heat of the electronic refrigeration plate can be quickly taken away by the set fan, thereby improving work efficiency.

[0029] Through the special structure of the water outlet, the water spraying speed can be increased and the spraying distance can be increased under the same output pressure.

[0030] Through the hemispherical grooves set on the water outlet, the vibration energy generated during operation is transmitted to the water flow, and a turbulent flow effect can be formed to facilitate the diffusion of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the overall structure of the five-axis vertical-horizontal conversion milling head with cooling function of the present invention;

[0032] Figure 2 AA cross-sectional view schematic diagram of the present invention;

[0033] Figure 3 This is a schematic diagram of the cooling end of the electronic cooling plate in the present invention;

[0034] Figure 4 This is a schematic diagram of the heating end of the electronic refrigeration plate in the present invention.

[0035] Among them, 1. Main shaft; 2. Water storage tank; 3. Turntable; 4. Water outlet; 5. Water inlet pipe; 6. First connecting pipe; 7. Water tank; 8. Refrigeration component; 9. Second connecting pipe; 10. Cooling pipe; 11. Cooling surface of electronic refrigeration plate; 12. Heating surface of electronic refrigeration plate; 13. Water pump; 14. Fan; 15. Swing head. DETAILED DESCRIPTION

[0036] Example 1

[0037] refer to Figure 1-2 A five-axis vertical-horizontal conversion milling head with a cooling function, the conversion milling head includes a swing assembly, the swing assembly includes a milling head box, a spindle 1, a spindle motor, a wiring tube, a swing head 15, a mounting plate, and a milling head box cover. The milling head box is arranged on the mounting plate, the milling head box cover is arranged on the milling head box, the swing head 15 is arranged on the lower surface of the milling head box, the spindle motor is arranged on the swing head 15, and the spindle is arranged on the spindle motor. The five-axis vertical-horizontal conversion milling head with a cooling function includes:

[0038] The water storage tank 2 is annular and fixedly installed in the swing head 15. The inner ring of the water storage tank 2 and the outer ring of the water storage tank 2 form a water storage cavity. The main shaft 1 passes through the inner ring of the water storage tank 2 and leaves a gap between the inner ring of the water storage tank 2. The water storage tank 2 is provided with an opening on the side close to the milling cutter.

[0039] The turntable 3 is arranged at the opening of the water storage bin 2 and is rotatably sealed with the water storage bin 2. A plurality of water outlet holes 4 are provided on the turntable 3, and the water outlet holes 4 are connected with the cavity; the water outlet holes 4 are inclined along the water storage bin 2 toward the turntable 3 and point to the milling cutter; the inclination direction of the water outlet holes 4 is the same as the rotation direction of the spindle 1, and the turntable 3 is driven by the water outlet holes 4 to rotate counterclockwise in the opposite direction of the spindle 1. The coolant flushes the spindle 1 in the opposite direction, thereby reducing the temperature of the milling head to a greater extent. By spraying water, the vibration energy of the fixture is absorbed, thereby improving the processing accuracy.

[0040] The water inlet pipe 5 is arranged on a side of the water storage bin 2 away from the turntable 3. One end of the water inlet pipe 5 is connected to the water storage bin 2, and the other end is connected to the water supply pipeline.

[0041] Preferably, the outer ring of the water storage bin 2 is provided with an external thread, and the inner ring of the swing head 15 is provided with an internal thread corresponding to the outer ring of the water storage bin 2, which makes installation and replacement more convenient through thread matching.

[0042] Preferably, the water outlet holes 4 are evenly arranged on the turntable 3 .

[0043] Example 2

[0044] refer to Figure 3-Figure 4 In order to improve work efficiency, based on Example 1, a refrigeration unit is provided on the water supply pipeline, and the refrigeration unit includes a first connecting pipe 6, a water tank 7, a cooling pipe 10, a refrigeration component 8, a second connecting pipe 9, a water pump 13, and a water inlet pipe 5, which are arranged in sequence from the water inlet direction.

[0045] One side of the water tank 7 is fixedly connected to the first connecting pipe 6, and the other end of the first connecting pipe 6 is connected to the user-end water supply pipe;

[0046] The refrigeration component 8 is arranged on the upper side of the water tank 7 and is used to cool the water out of the water tank;

[0047] The refrigeration component 8 includes:

[0048] An electronic refrigeration sheet is fixedly mounted on one side of the refrigeration component 8. The electronic refrigeration sheet includes a cooling surface 11 and a heating surface 12. The cooling surface 11 is located inside the refrigeration component 8, and the heating surface 12 is located outside the refrigeration component 8.

[0049] A cooling pipe 10 is laid in the refrigeration component 8. A first end of the cooling pipe 10 passes through the lower surface of the refrigeration component 8 and extends into the inner cavity of the water tank 7. A second end of the cooling pipe 10 passes through the upper surface of the refrigeration component 8.

[0050] A second connecting pipe 9, a first end of the second connecting pipe 9 is fixedly connected to the second end of the cooling pipe 10;

[0051] The water inlet end of the water pump 13 is connected to the second end of the second connecting pipe 9 , and the water outlet end of the water pump 13 is connected to the water inlet pipe 5 .

[0052] The fan 14 is fixedly installed at the heating end 12 of the electronic refrigeration plate. The fan 14 is provided to quickly take away the heat of the electronic refrigeration plate, thereby improving the working efficiency.

[0053] Example 3

[0054] In order to improve work efficiency, on the basis of Example 1, the water outlet holes 4 are evenly arranged along the circumference of the turntable 3, the water outlet holes 4 are a tapered structure, and the large diameter end of the water outlet holes 4 is located on one side of the water storage tank 2; the inner wall of the water outlet hole 4 is circumferentially provided with a spiral channel connected thereto, and the cutout of the spiral channel is located on the side away from the center of the water outlet hole 4. Through the special structural setting of the water outlet hole, under the condition of the same output pressure, the water spraying speed can be increased and the spraying distance is increased.

[0055] Example 4

[0056] In order to facilitate energy diffusion, on the basis of Example 1, several hemispherical grooves are set in the water outlet 4. Through the hemispherical grooves set on the water outlet 4, the vibration energy generated during operation is transmitted to the water flow, and a turbulent effect can also be formed, which facilitates the diffusion of energy.

[0057] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A five-axis vertical-horizontal conversion milling head with a cooling function, the conversion milling head comprising a swing assembly, the swing assembly comprising a milling head housing, a spindle, a spindle motor, a wiring tube, a swing head, a mounting plate and a milling head housing cover, the milling head housing being arranged on the mounting plate, the milling head housing cover being arranged on the milling head housing, the swing head being arranged on the lower surface of the milling head housing, the spindle motor being arranged on the swing head, and the spindle being arranged on the spindle motor, characterized in that: include: A water storage tank, the water storage tank is annular and fixedly installed in the oscillating head, the inner ring of the water storage tank and the outer ring of the water storage tank form a water storage cavity, the main shaft passes through the inner ring of the water storage tank, and a gap is left between the main shaft and the inner ring of the water storage tank, and an opening is provided on the side of the water storage tank close to the milling cutter; A turntable is provided at the opening of the water storage bin and is rotatably sealed with the water storage bin. A plurality of water outlet holes are provided on the turntable, and the water outlet holes are communicated with the cavity. The water outlet holes are inclined along the water storage bin toward the turntable and point toward the milling cutter, and the inclination direction of the water outlet holes is the same as the rotation direction of the spindle. A water inlet pipe is arranged on a side of the water storage bin away from the turntable, one end of the water inlet pipe is connected to the water storage bin, and the other end is connected to the water supply pipeline.

2. The five-axis vertical-horizontal conversion milling head with cooling function according to claim 1 is characterized in that: The outer ring of the water storage bin is provided with an external thread, and the inner ring of the swing head is provided with an internal thread corresponding to the outer ring of the water storage bin.

3. The five-axis vertical-horizontal conversion milling head with cooling function according to claim 1, characterized in that: The water supply pipeline is provided with a refrigeration unit, and the refrigeration unit comprises: A water tank, one side of which is fixedly connected to a first connecting pipe, the other end of which is connected to a user-side water supply pipeline; A refrigeration component is provided on the upper side of the water tank and is used to cool the water output from the water tank; a cooling pipe, the cooling pipe being laid in the refrigeration component, the first end of the cooling pipe penetrating the lower surface of the refrigeration component and extending into the inner cavity of the water tank, and the second end of the cooling pipe penetrating the upper surface of the refrigeration component; a second connecting pipe, a first end of the second connecting pipe being connected to the second end of the cooling pipe; A water pump, wherein the water inlet end of the water pump is connected to the second end of the second connecting pipe, and the water outlet end of the water pump is connected to the water inlet pipe.

4. The five-axis vertical-horizontal conversion milling head with cooling function according to claim 3, characterized in that: The refrigeration component includes: The electronic refrigeration sheet includes a cooling surface and a heating surface of the electronic refrigeration sheet; the electronic refrigeration sheet is fixedly installed on one side of the refrigeration component, the cooling surface of the electronic refrigeration sheet is located inside the refrigeration component, and the heating surface of the electronic refrigeration sheet is located outside the refrigeration component; the cooling pipe is fixedly installed on the cooling surface of the electronic refrigeration sheet, and the cooling pipe is serpentine. A fan is fixedly mounted on the heating surface of the electronic refrigeration plate.

5. The five-axis vertical-horizontal conversion milling head with cooling function according to claim 1, characterized in that: The water outlet holes are evenly arranged along the circumference of the turntable, and the water outlet holes are of a tapered structure. The large-diameter end of the water outlet holes is located on one side of the water storage bin.

6. The five-axis vertical-horizontal conversion milling head with cooling function according to claim 5, characterized in that: A spiral channel communicating with the water outlet is circumferentially provided on the inner wall of the water outlet, and a cutout of the spiral channel is located on a side away from the center of the water outlet.

7. The five-axis vertical-horizontal conversion milling head with cooling function according to claim 1, characterized in that: A plurality of hemispherical grooves are arranged in the water outlet hole.

Images