A large-torque double-swing angle milling head

Abstract

The utility model relates to double swing angle milling head technical field, and disclose a kind of big torque double swing angle milling head including mounting bracket, the bottom of mounting bracket is fixedly connected with support frame, the inside wall of both sides of support frame is rotatably connected with casing body by bearing, the inside of casing body is equipped with cavity, the inside wall of one side of cavity is fixedly connected with self-locking speed reducer motor of driving casing body rotation along axis, the bottom outer wall of casing body is equipped with milling cutter, the bottom inside wall of casing body is rotatably connected with connecting shaft by bearing, and one end of connecting shaft passes through casing body and is fixed with milling cutter.The utility model drives milling cutter to carry out big torque rotation by driving assembly, so that milling cutter can efficiently process higher hardness material, by the cooperation of connecting pipe and spray head, cooling effect is provided for milling cutter, reduce the heat generated in the process of milling.

Description

Technical Field

[0001] This utility model relates to the field of double-swivel-angle milling head technology, and more specifically to a high-torque double-swivel-angle milling head. Background Technology

[0002] In modern manufacturing, double-swivel milling heads are widely used in various high-precision machining applications, such as automotive parts and aerospace components.

[0003] A search revealed Chinese patent CN221389067U, which discloses a direct-drive double-swivel milling head device, including a U-shaped frame. This invention features a simple structure, low energy consumption, and high control precision. However, it still has the following drawbacks: while current double-swivel milling heads offer excellent machining flexibility, they often encounter low torque issues in practical applications. Low torque leads to insufficient cutting force during machining, thus affecting machining accuracy and surface quality, especially when machining hard materials. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-torque double-swivel-angle milling head to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a high-torque double-swing angle milling head, including a mounting frame, a support frame fixedly connected to the bottom of the mounting frame, and a housing rotatably connected to the inner walls of both sides of the support frame via bearings. The housing has a cavity inside, and a self-locking reduction motor for driving the housing to rotate along an axis is fixedly connected to the inner wall of one side of the cavity. A milling cutter is provided on the outer wall of the bottom of the housing, and a connecting shaft is rotatably connected to the inner wall of the bottom of the housing via bearings. One end of the connecting shaft passes through the housing and is fixed to the milling cutter. A drive assembly for driving the connecting shaft to rotate with high torque is provided on the inner wall of the housing.

[0006] As a further embodiment of this utility model, the drive assembly includes a first fixing plate fixedly connected to one side of the outer wall of the housing, a worm gear rotatably connected to one side of the first fixing plate via a bearing, a worm wheel meshing with the worm gear being connected to the outer circumferential wall of the connecting shaft via a key, and a first servo motor driving the worm gear to rotate along the axis being fixedly connected to one side of the first fixing plate.

[0007] As a further embodiment of this utility model, the drive assembly further includes a second fixing plate fixedly connected between the inner walls of both sides of the housing. The bottom of the second fixing plate is rotatably connected to a gear via a bearing. The outer circumferential wall of the connecting shaft is connected to a gear ring that meshes with the gear via a key, and the gear ring is concentric with the connecting shaft. The top of the second fixing plate is fixedly connected to a second servo motor that drives the gear to rotate along the axis.

[0008] As a further embodiment of this utility model, two symmetrically arranged fixing blocks are fixedly connected to one side of the outer wall of the support frame. An air inlet pipe is bolted inside the two fixing blocks and passes through the fixing blocks. Protrusions are fixedly connected to both sides of the outer wall of the support frame. A connecting pipe connected to the air inlet pipe is fixedly connected inside the protrusion and passes through the protrusion. A nozzle connected to the connecting pipe is fixedly connected to the bottom end of the connecting pipe.

[0009] As a further embodiment of this invention, both the worm and the worm wheel are made of tin bronze.

[0010] As a further embodiment of this invention, both the gear and the gear ring are made of carburized bearing steel.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model uses a drive assembly to drive the milling cutter to rotate with high torque, enabling the milling cutter to efficiently process materials with high hardness, thereby improving the overall processing efficiency and accuracy.

[0013] 2. This utility model provides cooling for the milling cutter by using the connecting pipe and the nozzle together, reducing the heat generated during milling and thus extending the service life of the milling cutter. It also cleans the cutting area, removes metal chips generated during the cutting process, and keeps the surface of the milling cutter clean.

[0014] 3. This utility model, by incorporating a worm gear and worm wheel, possesses self-locking capability, effectively preventing reverse rotation in the absence of external braking or in non-working states, thereby ensuring high safety. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the support frame according to Embodiment 1 of this utility model.

[0017] Figure 3 This is a cross-sectional view of the shell structure of Embodiment 1 of this utility model.

[0018] Figure 4 This is a partial cross-sectional view of Embodiment 2 of the present invention.

[0019] The attached figures are labeled as follows: 1. Mounting bracket; 2. Support bracket; 3. Air inlet pipe; 4. Housing; 5. Protrusion; 6. Connecting pipe; 7. Nozzle; 8. Cavity; 9. Drive assembly; 10. Self-locking geared motor; 11. Milling cutter; 12. Connecting shaft; 13. Fixing block;

[0020] 901, First fixed plate; 902, worm gear; 903, worm wheel; 904, First servo motor; 905, Second fixed plate; 906, Second servo motor; 907, gear; 908, gear ring. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] Example 1

[0023] Reference Figures 1-3 This utility model provides a high-torque double-swing angle milling head, including a mounting frame 1. A support frame 2 is bolted to the bottom of the mounting frame 1. A housing 4 is rotatably connected to the inner walls of both sides of the support frame 2 via bearings. A cavity 8 is opened inside the housing 4. A self-locking reduction motor 10 for driving the housing 4 to rotate along the axis is bolted to one inner wall of the cavity 8. A milling cutter 11 is provided on the bottom outer wall of the housing 4. A connecting shaft 12 is rotatably connected to the bottom inner wall of the housing 4 via bearings, and one end of the connecting shaft 12 passes through the housing 4 and is fixed to the milling cutter 11. A drive assembly 9 for driving the connecting shaft 12 to rotate with high torque is provided on the inner wall of the housing 4. The drive assembly 9 includes a first fixing plate 901 bolted to one outer wall of the housing 4. A worm gear 902 is rotatably connected to one side of the first fixing plate 901 via bearings. A worm wheel 903 that meshes with the worm gear 902 is connected to the outer circumference of the connecting shaft 12 via a key. One side of the first fixing plate 901 is open to the outer wall of the housing 4. A first servo motor 904, which drives the worm gear 902 to rotate along the axis, is fixed by bolts. First, the self-locking reduction motor 10 is started. The output shaft of the self-locking reduction motor 10 drives the housing 4 to rotate along the axis, thereby adjusting the angle of the milling cutter 11 to meet different processing requirements. Then, the first servo motor 904 is started. The output shaft of the first servo motor 904 drives the worm gear 902 to rotate along the axis. The worm gear 902 drives the worm wheel 903 to rotate. Since the worm wheel 903 is connected to the connecting shaft 12 by a key, the connecting shaft 12 rotates accordingly, thereby driving the milling cutter 11 to rotate with high torque to achieve milling. The entire device has a compact structure and can achieve high-torque double-swing angle milling, which improves processing efficiency and processing accuracy. The worm gear 902 and the worm wheel 903 have self-locking capability (when the lead angle of the worm gear 902 is less than the equivalent friction angle, the worm wheel 903 cannot drive the worm gear 902 in reverse), which can prevent the load from reversing without additional braking, thus ensuring high safety.

[0024] In this embodiment, two symmetrically arranged fixing blocks 13 are fixed to one side of the outer wall of the support frame 2 by bolts. An air inlet pipe 3 is bolted inside the two fixing blocks 13 and passes through the fixing blocks 13. Both sides of the outer wall of the support frame 2 are fixed with protrusions 5 by bolts. A connecting pipe 6 connected to the air inlet pipe 3 is bolted inside the protrusion 5 and passes through the protrusion 5. A nozzle 7 connected to the connecting pipe 6 is welded to the bottom end of the connecting pipe 6. High-pressure gas enters the two connecting pipes 6 from the air inlet pipe 3 and then sprays out from the nozzle 7 onto the milling cutter 11 to cool and clean the milling cutter 11. This prevents the processing effect and the service life of the milling cutter 11 from being affected by high temperature or debris accumulation during the processing. At the same time, the spraying of high-pressure gas can also play a certain role in blowing away debris generated during the processing, blowing away the debris generated during the processing from the processing area in time, keeping the processing environment clean, and further improving the processing accuracy and efficiency.

[0025] In this embodiment, both the worm 902 and the worm wheel 903 are made of tin bronze. Since both the worm 902 and the worm wheel 903 are made of tin bronze, this material has good wear resistance and corrosion resistance, which can effectively extend the service life of the worm 902 and the worm wheel 903. When the worm 902 rotates, its helical teeth mesh tightly with the teeth of the worm wheel 903. Due to the material characteristics of tin bronze, the friction coefficient between the teeth is low, which reduces energy loss and improves transmission efficiency.

[0026] It should be noted that the self-locking geared motor 10 and the first servo motor 904 used in this application are existing technologies. Those skilled in the art can set them according to actual needs, and they will not be described in detail here.

[0027] The use of this utility model involves the following steps:

[0028] S1: First, start the self-locking reduction motor 10. The output shaft of the self-locking reduction motor 10 drives the housing 4 to rotate along the axis, adjusting the angle of the milling cutter 11.

[0029] S2: Then start the first servo motor 904. The output shaft of the first servo motor 904 drives the worm 902 to rotate along the axis. The worm 902 drives the worm wheel 903 to rotate. Since the worm wheel 903 is connected to the connecting shaft 12 by a key, the connecting shaft 12 rotates accordingly, thereby driving the milling cutter 11 to rotate with high torque to mill the workpiece.

[0030] Example 2

[0031] Reference Figure 4This utility model provides a high-torque double-swing angle milling head, including a mounting frame 1. A support frame 2 is bolted to the bottom of the mounting frame 1. A housing 4 is rotatably connected to the inner walls of both sides of the support frame 2 via bearings. A cavity 8 is formed inside the housing 4. A self-locking reduction motor 10, which drives the housing 4 to rotate along an axis, is bolted to one inner wall of the cavity 8. A milling cutter 11 is provided on the bottom outer wall of the housing 4. A connecting shaft 12 is rotatably connected to the bottom inner wall of the housing 4 via bearings, with one end of the connecting shaft 12 passing through the housing 4 and fixed to the milling cutter 11. A drive assembly 9, which drives the connecting shaft 12 to rotate with high torque, is provided on the inner wall of the housing 4. The drive assembly 9 also includes a second fixing plate 905 bolted between the inner walls of both sides of the housing 4. A gear 907 is rotatably connected to the bottom of the second fixing plate 905 via bearings. The outer circumference of the connecting shaft 12 is connected to... A keyed ring 908 meshes with the gear 907, and the ring 908 is concentric with the connecting shaft 12. The top of the second fixed plate 905 is bolted with a second servo motor 906 that drives the gear 907 to rotate along the axis. First, the self-locking reduction motor 10 is started, and the output shaft of the self-locking reduction motor 10 drives the housing 4 to rotate along the axis, thereby adjusting the angle of the milling cutter 11 to meet different processing requirements. Then, the second servo motor 906 is started, and the output shaft of the second servo motor 906 drives the gear 907 to rotate along the axis. The gear 907 meshes with the ring 908, thereby driving the connecting shaft 12 and the milling cutter 11 to rotate with high torque, realizing the milling of the workpiece. It is suitable for milling workpieces with high hardness. The gear 907 and the ring 908 have high transmission accuracy, small return error, low sliding friction, and low energy loss.

[0032] In this embodiment, two symmetrically arranged fixing blocks 13 are fixed to one side of the outer wall of the support frame 2 by bolts. An air inlet pipe 3 is bolted inside the two fixing blocks 13 and passes through the fixing blocks 13. Both sides of the outer wall of the support frame 2 are fixed with protrusions 5 by bolts. A connecting pipe 6 connected to the air inlet pipe 3 is bolted inside the protrusion 5 and passes through the protrusion 5. A nozzle 7 connected to the connecting pipe 6 is welded to the bottom end of the connecting pipe 6. High-pressure gas enters the two connecting pipes 6 from the air inlet pipe 3 and then sprays out from the nozzle 7 onto the milling cutter 11 to cool and clean the milling cutter 11. This prevents the processing effect and the service life of the milling cutter 11 from being affected by high temperature or debris accumulation during the processing. At the same time, the spraying of high-pressure gas can also play a certain role in blowing away debris generated during the processing, blowing away the debris generated during the processing from the processing area in time, keeping the processing environment clean, and further improving the processing accuracy and efficiency.

[0033] In this embodiment, both gear 907 and gear ring 908 are made of carburized bearing steel, which has high hardness and wear resistance. It can effectively resist the friction and wear generated during milling, thereby extending the service life of gear 907 and gear ring 908. At the same time, carburized bearing steel also has good fatigue resistance and can withstand large torque and load, ensuring the stability and reliability of gear 907 and gear ring 908 under long-term operation.

[0034] It should be noted that the self-locking geared motor 10 and the second servo motor 906 used in this application are both existing technologies. The model of the self-locking geared motor is 5840-31ZY. The self-locking geared motor is a special geared motor that can automatically lock the output shaft and prevent the load from reversing or sliding when the power supply is stopped. Its core function depends on the mechanical structure design (such as worm gear or ratchet mechanism). The motor driving the worm gear or ratchet mechanism, as well as the first servo motor and the second servo motor, are all servo motors with encoders. The number of rotations and rotation angle of the motor output shaft are controllable and have high precision. Those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0035] The use of this utility model involves the following steps:

[0036] S1: First, start the self-locking reduction motor 10. The output shaft of the self-locking reduction motor 10 drives the housing 4 to rotate along the axis, adjusting the angle of the milling cutter 11.

[0037] S2: Then start the second servo motor 906. The output shaft of the second servo motor 906 drives the gear 907 to rotate along the axis. The gear 907 meshes with the gear ring 908, thereby driving the connecting shaft 12 and the milling cutter 11 to rotate with high torque for milling the workpiece.

[0038] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0039] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A high-torque double-swing angle milling head, comprising a mounting frame (1), a support frame (2) fixedly connected to the bottom of the mounting frame (1), and a housing (4) rotatably connected to the inner walls of both sides of the support frame (2) via bearings, characterized in that: The housing (4) has an internal cavity (8). A self-locking geared motor (10) that drives the housing (4) to rotate along the axis is fixedly connected to one side of the inner wall of the cavity (8). A milling cutter (11) is provided on the bottom outer wall of the housing (4). A connecting shaft (12) is rotatably connected to the bottom inner wall of the housing (4) through a bearing. One end of the connecting shaft (12) passes through the housing (4) and is fixed to the milling cutter (11). A drive assembly (9) that drives the connecting shaft (12) to rotate with high torque is provided on the inner wall of the housing (4).

2. The high-torque double-swivel-angle milling head according to claim 1, characterized in that: The drive assembly (9) includes a first fixing plate (901) fixedly connected to one side of the outer wall of the housing (4). A worm gear (902) is rotatably connected to one side of the first fixing plate (901) via a bearing. A worm wheel (903) meshing with the worm gear (902) is connected to the outer circumferential wall of the connecting shaft (12) via a key. A first servo motor (904) that drives the worm gear (902) to rotate along the axis is fixedly connected to one side of the first fixing plate (901).

3. The high-torque double-swivel-angle milling head according to claim 1, characterized in that: The drive assembly (9) further includes a second fixing plate (905) fixedly connected between the inner walls of the two sides of the housing (4). The bottom of the second fixing plate (905) is rotatably connected to a gear (907) via a bearing. The outer circumference of the connecting shaft (12) is connected to a gear ring (908) that meshes with the gear (907) via a key. The gear ring (908) is concentric with the connecting shaft (12). The top of the second fixing plate (905) is fixedly connected to a second servo motor (906) that drives the gear (907) to rotate along the axis.

4. A high-torque double-swivel-angle milling head according to claim 1, characterized in that: Two symmetrically arranged fixing blocks (13) are fixedly connected to one side of the outer wall of the support frame (2). An air inlet pipe (3) is bolted inside the two fixing blocks (13) and passes through the fixing block (13). Both sides of the outer wall of the support frame (2) are fixedly connected to protrusions (5). A connecting pipe (6) connected to the air inlet pipe (3) is fixedly connected inside the protrusion (5) and passes through the protrusion (5). A nozzle (7) connected to the connecting pipe (6) is fixedly connected to the bottom end of the connecting pipe (6).

5. A high-torque double-swivel-angle milling head according to claim 2, characterized in that: Both the worm (902) and the worm wheel (903) are made of tin bronze.

6. A high-torque double-swivel-angle milling head according to claim 3, characterized in that: Both the gear (907) and the gear ring (908) are made of carburized bearing steel.

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