Aluminium bar milling machine

Abstract

This invention provides a milling machine for machining aluminum bars. By setting a pair of opposing clamping assemblies and milling cutter assemblies on the top of the machine frame, it achieves simultaneous milling of the top and bottom surfaces of the aluminum bar ends on opposite sides. This allows for double-sided interface machining in a single clamping operation, effectively solving the problems of multiple clamping operations, low machining efficiency, and difficulty in guaranteeing machining accuracy in existing technologies. The clamping assemblies are driven by cylinders to clamp the clamping plates, preventing the aluminum bar from slipping during machining. The first and second milling cutters can simultaneously machine the end faces of the two aluminum bars clamped on the two opposing clamping assemblies, ensuring machining symmetry and consistency of interface dimensions. The second milling cutter is detachably mounted on a mounting position via a mounting post, and the mounting post can be selected in different lengths as needed, thereby adjusting the distance between the first and second milling cutters to meet different depth machining requirements, making operation flexible and convenient.

Description

Technical Field

[0001] This utility model relates to the field of aluminum bar processing technology, specifically a milling machine for aluminum bar processing. Background Technology

[0002] Aluminum bars, as a common semi-finished aluminum material, are widely used in power electronics, machinery, automotive, and construction industries as electrical connectors. In practical applications, aluminum bars often require the machining of connectors at their ends for subsequent splicing, fixing, or conductive connections with other aluminum components or structural parts. Current aluminum bar connector machining typically relies on general-purpose CNC milling machines or manually operated cutting machines. While these methods can form the connectors, existing general-purpose milling machines often require multiple clamping and positioning operations when machining the connector ends. Each machining operation can only complete the milling of one side, necessitating re-clamping and machining of the other side. This not only reduces production efficiency but also easily leads to inconsistent machining accuracy due to clamping deviations. Secondly, traditional milling methods often use a single tool for cutting, making it impossible to mill both the top and bottom sides of the aluminum bar end simultaneously, resulting in poor symmetry and dimensional consistency of the connector. For aluminum bar structures requiring precise mating, subsequent finishing processes are often necessary, further increasing processing costs. Furthermore, some existing equipment lacks flexibility in tool mounting methods, with non-adjustable tool spacing, making it difficult to process interfaces with different insertion depths. Therefore, it is necessary to provide a milling machine for aluminum bar machining that is easy to operate and can improve processing efficiency and accuracy. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a milling machine for aluminum bar processing, which effectively improves upon the deficiencies of some traditional milling machines for aluminum bar processing in terms of processing efficiency, processing accuracy, and ease of operation.

[0004] A milling machine for machining aluminum bars is used to mill the interface on both the top and bottom surfaces of the aluminum bar's end towards the opposite side. It includes a frame, with a pair of opposing clamping assemblies and a milling cutter assembly mounted on the top of the frame. Each clamping assembly includes a clamping seat, a clamping plate, and a cylinder. The clamping seat has a square through hole in its center, with limit posts on both sides of the through hole. The clamping plate is disposed within the square through hole, and limit holes with sliding fits to the limit posts are provided on both sides of the clamping plate. The cylinder is mounted on the top of the clamping seat, and its output end passes through a slot in the clamping seat and connects to the top surface of the clamping plate. The milling cutter assembly includes a traveling assembly, a rotary motor, a first milling cutter, and a second milling cutter. The traveling assembly is mounted on... The rotary motor is connected to the bottom of the traveling assembly at the top of the frame. A rotating shaft is provided at the output end of the rotary motor. The first milling cutter is provided at the end of the rotating shaft. A mounting position is recessed from the side of the rotating shaft away from the rotary motor towards the side of the rotary motor. A mounting post is provided at the center of the top surface of the second milling cutter. The second milling cutter is detachably mounted on the mounting position through the mounting post. Both the first and second milling cutters include a milling cutter body. One side of each end of the length direction of the milling cutter body is provided with a protrusion. The two protrusions are located on different sides of the milling cutter body. The side of the protrusion near the axis of the length direction of the milling cutter body is arc-shaped and transitions to the milling cutter body.

[0005] Preferably, the milling cutter body and the protrusion are integrally formed.

[0006] Furthermore, the mounting position is a cylindrical mounting position, the inner sidewall of the mounting position is provided with an internal thread, the mounting post is a cylindrical mounting post, and the outer side of the mounting post is provided with an external thread that matches the internal thread.

[0007] Preferably, the length of the mounting post has multiple dimensions.

[0008] Preferably, the walking component is a first lead screw module.

[0009] Preferably, the second milling cutter has a hexagonal threaded hole recessed on the side of its bottom face away from the mounting post and on the side facing the mounting post.

[0010] Preferably, a second lead screw module is provided at the bottom of the walking component, and the rotary motor is provided at the output end of the second lead screw module.

[0011] Preferably, the bottom of the clamp is provided with anti-slip serrations.

[0012] Preferably, the outer surfaces of the first and second milling cutters are provided with a cemented carbide layer.

[0013] Preferably, a positioning mechanism is provided on one side of the frame located on the clamping seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a milling machine for machining aluminum bars. By setting a pair of opposing clamping assemblies and milling cutter assemblies on the top of the machine frame, it achieves simultaneous milling of the top and bottom surfaces of the aluminum bar ends on opposite sides. This allows for the completion of double-sided interface machining in a single clamping operation, effectively solving the problems of multiple clamping operations, low machining efficiency, and difficulty in guaranteeing machining accuracy in existing technologies. The clamping assemblies are driven by cylinders to clamp the clamping plates, preventing the aluminum bar from slipping during machining. The first and second milling cutters can simultaneously machine the end faces of two aluminum bars clamped on the two opposing clamping assemblies, ensuring machining symmetry and consistency of interface dimensions. It can also machine both the top and bottom interfaces of two aluminum bars at once, significantly improving machining efficiency. The second milling cutter is detachably mounted on the mounting position via a mounting post, and the mounting post can be selected in different lengths as needed, thereby adjusting the distance between the first and second milling cutters to meet different depth interface machining requirements, making operation flexible and convenient. Therefore, the milling machine for aluminum bar processing of this utility model not only improves processing efficiency and processing accuracy, ensuring the symmetry and dimensional consistency of the insertion interface, but also has significant advantages such as convenient operation, adjustable cutting tools, stable clamping and strong durability. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of the milling machine for aluminum bar processing according to the present invention; Figure 2 This is a side view of the clamp assembly described in this utility model. Figure 3 This is a top view of the first milling cutter described in this utility model; Figure 4 This is a front view schematic diagram of the second milling cutter described in this utility model; Figure 5 This is a top view of the structure of the first and second milling cutters of this utility model after installation; Figure 6 This is a schematic diagram of the aluminum bar after processing according to this utility model.

[0016] in: 10-Frame, 20-Clamping assembly, 30-Milling cutter assembly, 21-Clamping seat, 22-Clamping plate, 23-Cylinder, 24-Square through hole, 25-Limiting post, 31-Traveling assembly, 32-Rotary motor, 33-First milling cutter, 34-Second milling cutter, 35-Rotating shaft, 36-Mounting post, 37-Mounting base, 38-Rubber plate, 331-Milling cutter body, 332-Protrusion, 333-Arc-shaped connecting surface. Detailed Implementation

[0017] The embodiments described below are merely some embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] See Figures 1-6 This embodiment provides a milling machine for machining aluminum bars, used to mill the insertion interface 40 on both the top and bottom surfaces of the aluminum bar towards the opposite side. It includes a frame 10, on the top of which are a pair of opposing clamping assemblies 20 and a milling cutter assembly 30. Each clamping assembly 20 includes a clamping seat 21, a clamping plate 22, and a cylinder 23. A square through hole 24 is formed in the center of the clamping seat 21, and limit posts are provided on both sides of the square through hole 24. 25. The clamping plate 22 is disposed within the square through hole 24. Limiting holes that slide with the limiting post 25 are provided on both sides of the clamping plate 22. The top of the clamping seat 21 is provided with the cylinder 23. The output end of the cylinder 23 passes through a through slot opened on the clamping seat 21 and connects to the top surface of the clamping plate 22. The milling cutter assembly 30 includes a traveling assembly 31, a rotary motor 32, a first milling cutter 33, and a second milling cutter 34. The traveling assembly 31 is provided with… At the top of the frame 10, the bottom of the traveling assembly 31 is connected to the rotary motor 32. The output end of the rotary motor 32 is provided with a rotating shaft 35. The first milling cutter 33 is sleeved on the outer side of the end of the rotating shaft 35. The rotating shaft 35 is recessed from the side away from the rotary motor 32 to the side closer to the rotary motor 32 to provide a mounting position. The center of the top surface of the second milling cutter 34 is provided with a mounting post 36. The second milling cutter 34 is detachably mounted on the mounting position through the mounting post 36. The first milling cutter 33 and the second milling cutter 34 both include a milling cutter body 331. One side of each end of the milling cutter body 331 in the length direction is provided with a protrusion 332 extending outward. The two protrusions 332 are located on different sides of the milling cutter body 331. The side of the protrusion 332 near the axis in the length direction of the milling cutter body 331 is set with an arc transition to the milling cutter body 331.

[0019] Preferably, the milling cutter body 331 and the protrusion 332 are integrally formed. That is, during the milling cutter manufacturing process, the protrusion 332 and the milling cutter body 331 are directly formed into an integral structure through an integral forming process, rather than being fixedly connected by welding or screwing later. In the specific production of the milling cutter, a square piece of high-speed tool steel is first selected. This high-speed tool steel includes a top surface, a bottom surface opposite to the top surface, a first elongated side surface and a second elongated side surface connected between the top surface and the bottom surface, and a first end surface and a second end surface connected at the ends of the top surface, the bottom surface, the first elongated side surface and the second elongated side surface. The first elongated side surface and the second elongated side surface are sides along the length direction of the high-speed tool steel. After selecting the high-speed tool steel, the side of the first long strip extends from the side near the first end face to the side of the second end face within a predetermined distance (preferably 1 / 3 of the distance in this application). Then, a square is cut out from this predetermined distance section to the side of the second long strip, forming an L-shaped notch at the corner. Similarly, a square is cut downwards from the side of the second long strip near the second end face to the side of the first end face, and the corner of this square structure is also cut out to form an L-shaped notch. Then, an arc-shaped connecting surface 333 is cut at the transition part of the L-shaped notch to form an arc-shaped transition.

[0020] In this embodiment, the first milling cutter 33 and the second milling cutter 34 not only correspond to the upper and lower surfaces of the aluminum bar in terms of their overall position, but also their cutter body structure, namely the protrusion 332 extending from the main body 331 and the arc-shaped transition surface between it and the main body, constitutes a complete cutting profile. Specifically, when the first milling cutter 33 and the second milling cutter 34 rotate, the outer surface of the protrusion 332 forms the main cutting edge, undertaking the main material removal task to form the sidewall or groove surface of the insertion interface 40; at the same time, the arc-shaped transition surface between the protrusion 332 and the main body 331 also contacts the end face of the aluminum bar being processed during rotation and participates in cutting or trimming. This arc-shaped transition can serve as a trimming profile to reduce stress concentration, eliminate sharp edges, reduce burrs and chipping, and improve the fit of mating parts.

[0021] Simultaneously, because the protrusions 332 and arc transitions of the first milling cutter 33 and the second milling cutter 34 are arranged circumferentially, when the milling cutter rotates and travels (feeds) synchronously, the protrusions 332 of the first milling cutter 33 and its connected arc transition can simultaneously contact and cut the top surfaces of the two aluminum bars clamped in the two opposing clamping assemblies 20, thereby forming corresponding insertion interfaces 40 on the top of the two aluminum bars respectively; similarly, the protrusions 332 of the second milling cutter 34 and its arc transition simultaneously contact and cut the bottom surfaces of the two aluminum bars, forming insertion interfaces 40 on the bottom of the two aluminum bars respectively. In other words, the circumferential cutting profile of the tool acts on the corresponding positions of the two workpieces simultaneously in one rotation and one stroke, realizing the synchronous machining effect of the upper cutter simultaneously machining the top surfaces of the two aluminum bars and the lower cutter simultaneously machining the bottom surfaces of the two aluminum bars.

[0022] Furthermore, the mounting position is a cylindrical mounting position with an internal thread on its inner sidewall. The mounting post 36 is also cylindrical, with an external thread on its outer side that matches the internal thread. This threaded connection allows the second milling cutter 34 to be easily installed or removed from the mounting position by screwing, improving tool changing efficiency. Preferably, the mounting post 36 has various lengths, including short, medium, and long types. Users can select the appropriate length of mounting post 36 for assembly based on different aluminum thicknesses or machining depths. Since the depth of the mounting position is fixed, the distance the mounting post 36 extends into the mounting position is fixed by using different specifications, thus allowing adjustment of the distance between the first milling cutter 33 and the second milling cutter 34. When machining a thin workpiece, a short mounting post 36 can be used to keep the second end mill 34 close to the end of the shaft 35, ensuring cutting stability. When machining a thicker aluminum bar, a longer mounting post 36 can be used, extending the position of the second end mill 34 outwards, thus increasing the distance between the first end mill 33 and the second end mill 34 and increasing the effective contact depth between the tool and the workpiece. Similarly, when machining an aluminum bar of the same specification, if a deeper insertion interface 40 needs to be machined, a shorter mounting post 36 is used, resulting in a smaller distance between the first end mill 33 and the second end mill 34, leading to a deeper machining depth. Conversely, if a shallower insertion interface 40 needs to be machined, a longer mounting post 36 is used, resulting in a larger distance between the first end mill 33 and the second end mill 34, leading to a shallower machining depth.

[0023] Preferably, the second end mill 34 has a hexagonal threaded hole recessed on the bottom surface away from the mounting post 36 and on the side closest to the mounting post 36. This hexagonal threaded hole, used in conjunction with an installation tool (such as an Allen wrench), allows the operator to easily screw the second end mill 34 onto or remove it from the mounting post 36. This design allows for quick tool changes without the need for external clamps or complex tooling, improving the maintenance efficiency and operational convenience of the end mill assembly 30. Simultaneously, the recessed hexagonal threaded hole prevents interference with the aluminum bar or other parts of the frame 10 during rotary machining, ensuring the safety and reliability of the end mill installation.

[0024] Alternatively, the mounting position may be a hexagonal mounting position with internal threads on its inner sidewall. The mounting post 36 may be a hexagonal mounting post 36 with a first threaded hole recessed at the top center of the mounting position. The center of the milling cutter body 331 of the second milling cutter 34 and the center of the mounting post 36 may have second threaded holes that are directly opposite the first threaded hole. When installing the second milling cutter 34, the hexagonal mounting post 36 is first inserted into the hexagonal mounting position, and then a screw with a crosshead is inserted from the bottom of the second threaded hole. Then it is screwed into the first threaded hole. When the screw is fully screwed in, the second milling cutter 34 is installed.

[0025] Preferably, the walking component 31 is a first lead screw module or a cylinder module. Specifically, the first lead screw module includes a drive motor, the output end of which is connected to a lead screw. Mounting seats are provided on both sides of the lead screw, and a lead screw nut is slidably disposed within each mounting seat. The lead screw nut is drively connected to the lead screw. A mounting base 37 is provided on the side of the lead screw nut away from the lead screw, and the rotary motor 32 is mounted on the mounting base 37. When the walking component 31 is a cylinder module, the output end of the cylinder is provided with a mounting base 37, and the rotary motor 32 is mounted on the mounting base 37. The output end of the rotary motor 32 is perpendicular to the output end of the cylinder module.

[0026] It should be noted that when machining the connector 40, the two aluminum bars to be machined are first placed in the square through holes 24 of the two clamping assemblies 20 opposite each other on the top of the frame 10, so that the ends of the aluminum bars extend accurately to the machining positions corresponding to the milling cutter assembly 30, and the ends of the two aluminum bars abut against each other. Then, the cylinder 23 is activated, and the piston rod of the cylinder 23 pushes the clamping plate 22 downward. Under the constraint of the limiting hole and the limiting post 25, the clamping plate 22 moves smoothly downward in the vertical direction, applying a uniform clamping force to the side wall of the aluminum bar, and firmly fixing the aluminum bar on the clamping seat 21 to prevent shaking or displacement during the machining process.

[0027] Next, the rotary motor 32 and the traveling assembly 31 work synchronously. When the traveling assembly 31 is a lead screw module, the drive motor starts and drives the lead screw to rotate. The lead screw nut is precisely fed along the lead screw, thereby driving the rotary motor 32 and the first and second milling cutters 33 and 34 mounted at its lower end to move synchronously toward the aluminum bar and cut the connector 40. When the traveling assembly 31 is a cylinder 23 module, the output end of the cylinder 23 extends linearly, driving the rotary motor 32 and the milling cutter assembly 30 to move synchronously toward the aluminum bar, realizing the feeding action. During this process, the rotation of the first and second milling cutters 33 and the forward movement of the traveling assembly 31 are synchronized, that is, the first and second milling cutters 33 and 34 move forward along the end of the aluminum bar while rotating and cutting, thereby completing continuous cutting.

[0028] Specifically, the protrusion 332 and its arc-shaped transition surface of the first milling cutter 33, while rotating and traveling synchronously, simultaneously cut the top surfaces of the two aluminum bars from the side, cutting the upper surfaces of the two workpieces to form the upper groove surface of the insertion interface 40. Similarly, the protrusion 332 and its arc-shaped transition surface of the second milling cutter 34 simultaneously cut the bottom surfaces of the two aluminum bars to form the lower insertion interface 40. Through this synchronous cutting method of rotation and travel, the upper and lower cutters simultaneously process the insertion interface 40 on the end faces of the two aluminum bars, improving processing efficiency and the consistency of the dimensions of the insertion interface 40. After processing, the traveling assembly 31 drives the milling cutter assembly 30 out of the processing area, the rotary motor 32 stops rotating, the cylinder 23 retracts, the clamping plate 22 moves upward to release the clamping force, and the operator can then remove the two processed aluminum bar workpieces, completing one processing cycle.

[0029] Alternatively, a second lead screw module may be provided at the bottom of the walking assembly 31. The second lead screw module also includes a drive motor, a lead screw, a mounting base, and a lead screw nut. The output end of the second lead screw module is provided with the rotary motor 32. The second lead screw module drives the lead screw to rotate through its drive motor, causing the lead screw nut to move linearly along the lead screw, thereby adjusting the vertical height of the first milling cutter 33.

[0030] Alternatively, the bottom of the square through hole 24 may be provided with two sliding grooves, and a rubber plate 38 may be detachably installed above the bottom of the square through hole 24. A slide rail is provided at the bottom of the rubber plate 38, and the rubber plate 38 is slidably connected to the sliding grooves via the slide rail. The thickness of the rubber plate 38 can be selected according to requirements, or the rubber plate 38 may not be present. By providing the rubber plate 38, the aluminum bar can obtain a certain degree of elastic cushioning during clamping, reducing indentations and scratches on the surface of the aluminum bar from direct metal contact. Simultaneously, it increases friction, preventing the aluminum bar from slipping or shifting during processing, thereby improving clamping stability and processing accuracy. The height of the aluminum bar can also be adjusted. Users can adjust the installation height of the aluminum bar by selecting whether to install the rubber plate 38 and the thickness of the installed rubber plate 38, based on the thickness of the aluminum bar. For example, if the aluminum bar is relatively thin, and the vertical height of the first milling cutter 33 is not adjusted, the depth of the top-grouted insertion interface 40 may be insufficient. In this case, inserting the rubber plate 38 into the bottom of the square through hole 24 achieves the effect of adjusting the height of the aluminum bar, and the machining depth is then sufficient. The bottom insertion interface 40 can be fixed by replacing the appropriate second milling cutter 34. It should be noted that the rubber plate 38 includes a bottom metal plate and a rubber layer disposed on the bottom metal plate, and the slide rail is disposed on the side of the bottom metal plate away from the rubber layer.

[0031] Preferably, the bottom of the clamping plate 22 is provided with anti-slip serrations. By machining a regularly arranged serration structure on the bottom of the clamping plate 22, the friction of the clamping surface can be significantly increased when clamping the aluminum bar, preventing the aluminum bar from slipping or shifting due to vibration or cutting force during milling. The serrations not only stabilize the position of the workpiece, but also effectively reduce the pressure on the surface of the aluminum bar while ensuring clamping force, preventing local pressure damage or deformation.

[0032] Preferably, the outer surfaces of the first milling cutter 33 and the second milling cutter 34 are provided with a carbide layer. Covering the outer surface with a carbide layer significantly improves the wear resistance and impact resistance of the milling cutters when cutting aluminum at high speeds, preventing the protrusion 332 from wearing out too quickly due to long-term friction, thereby extending the service life of the milling cutters. Simultaneously, the carbide layer has high hardness and good heat resistance, effectively reducing the risk of chipping at the cutting edge during milling, ensuring the stability and accuracy of the milling cutter's cutting profile. Furthermore, the carbide layer can also reduce adhesion between the tool and the aluminum material, lessen the formation of built-up edge, and make the machined surface smoother, thus improving overall milling efficiency and machining quality.

[0033] Preferably, the frame 10 is provided with a positioning mechanism on one side of the clamping seat 21. The positioning mechanism includes a sliding seat disposed on one side of the clamping seat 21, and a sliding member is slidably disposed on the sliding seat. The sliding seat and the sliding member are connected by a third lead screw assembly. The length direction of the third lead screw assembly is parallel to that of the aluminum bar after insertion. It includes a drive motor, a lead screw, and a lead screw nut. The lead screw nut is connected to the sliding member. An L-shaped abutment plate is provided on the top of the sliding member. During processing, by adjusting the sliding member to a suitable processing position, one end of the aluminum bar is inserted through the square through hole 24 of the clamping seat 21, and the other end abuts against the corner of the L-shaped abutment plate. At this time, the position of the aluminum bar is fixed. Another aluminum bar is inserted from the square through hole 24 of the clamping seat 21 on the other side, and its end abuts against the installed aluminum bar.

[0034] Preferably, the frame 10 is equipped with a Siemens S7-1500 PLC processor and multiple adjustment switches. The Siemens S7-1500 PLC processor is connected to the clamping assembly 20, the traveling assembly 31, and the milling cutter assembly 30.

[0035] This utility model provides a milling machine for machining aluminum bars. By setting a pair of opposing clamping assemblies 20 and milling cutter assemblies 30 on the top of the frame 10, it realizes simultaneous milling of the top and bottom surfaces of the aluminum bar ends on opposite sides. Thus, the machining of double-sided insertion interfaces 40 can be completed in a single clamping, effectively solving the problems of multiple clamping, low machining efficiency, and difficulty in guaranteeing machining accuracy in the prior art. The clamping assembly 20 is driven by a cylinder 2623 to clamp the clamping plate 22, which can prevent the aluminum bar from slipping during machining. The first milling cutter 33 and the second milling cutter 34 can simultaneously machine the insertion interfaces 40 on the end faces of the two aluminum bars clamped on the two opposing clamping assemblies 20, thereby ensuring the symmetry of machining and the consistency of the dimensions of the insertion interfaces 40. The second milling cutter 34 is detachably mounted on the mounting position through a mounting post 36, and the mounting post 36 can be selected with different lengths as needed, thereby adjusting the distance between the first milling cutter 33 and the second milling cutter 34 to meet the machining requirements of insertion interfaces 40 at different depths, making the operation flexible and convenient. The milling cutter body 331 has protrusions 332 at both ends along its length. These protrusions 332 are located on different sides of the milling cutter body 331, and the side of the protrusion 332 closest to the axis of the milling cutter body 331 transitions to the body in an arc shape. This design improves the distribution of cutting forces, reduces machining burrs, enhances milling stability, and extends tool life. Therefore, the milling machine for aluminum bar machining of this invention not only improves machining efficiency and accuracy, ensuring the symmetry and dimensional consistency of the insertion interface 40, but also has significant advantages such as convenient operation, adjustable tools, stable clamping, and high durability.

[0036] The above-disclosed embodiments are merely some preferred embodiments of the present utility model, and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model patent application shall still fall within the scope of the present utility model.

Claims

1. A milling machine for machining aluminum bars, used for milling an interface on both the top and bottom surfaces of the aluminum bar's end towards the opposite side, characterized in that: It includes a frame, on the top of which are a pair of opposing clamping assemblies and a milling cutter assembly. Each clamping assembly includes a clamping seat, a clamping plate, and a cylinder. The clamping seat has a square through hole in its center, with limit posts on both sides of the through hole. The clamping plate is disposed within the through hole, and limit holes on both sides of the clamping plate are provided for sliding engagement with the limit posts. The cylinder is located on the top of the clamping seat, and its output end passes through a slot in the clamping seat and connects to the top surface of the clamping plate. The milling cutter assembly includes a traveling assembly, a rotary motor, a first milling cutter, and a second milling cutter. The traveling assembly is located on the top of the frame, and the rotary motor is connected to its bottom. A rotating shaft is provided at the output end of the motor, and a first milling cutter is provided at the end of the rotating shaft. A mounting position is recessed from the side of the rotating shaft away from the rotating motor towards the side of the rotating motor. A mounting post is provided at the center of the top surface of the second milling cutter. The second milling cutter is detachably mounted on the mounting position through the mounting post. Both the first and second milling cutters include a milling cutter body. One side of each end of the length direction of the milling cutter body is provided with a protrusion. The two protrusions are located on different sides of the milling cutter body. The side of the protrusion near the axis of the length direction of the milling cutter body is arc-shaped and transitions to the milling cutter body. A positioning mechanism is provided on one side of the frame located on the clamping seat.

2. The milling machine for machining aluminum bars as described in claim 1, characterized in that, The milling cutter body and the protrusion are integrally formed.

3. The milling machine for machining aluminum bars as described in claim 2, characterized in that, The mounting position is a cylindrical mounting position, and the inner sidewall of the mounting position is provided with an internal thread. The mounting post is a cylindrical mounting post, and the outer side of the mounting post is provided with an external thread that matches the internal thread.

4. The milling machine for aluminum foil processing as described in claim 1, characterized in that, The mounting post has various lengths.

5. The milling machine for machining aluminum bars as described in claim 1, characterized in that, The walking component is a first lead screw module.

6. The milling machine for machining aluminum bars as described in claim 1, characterized in that, The second milling cutter has a hexagonal threaded hole recessed on the side of its bottom face away from the mounting post and on the side facing the mounting post.

7. The milling machine for machining aluminum bars as described in claim 1, characterized in that, A second lead screw module is provided at the bottom of the walking component, and the rotary motor is provided at the output end of the second lead screw module.

8. The milling machine for machining aluminum bars as described in claim 1, characterized in that, The bottom of the clamp is provided with anti-slip serrations.

9. The milling machine for machining aluminum bars as described in claim 1, characterized in that, The outer surfaces of the first and second milling cutters are provided with a cemented carbide layer.

Images