An aluminum alloy milling equipment and its working method

Abstract

The present invention relates to the field of milling equipment, and particularly to an aluminum alloy milling equipment and its working method, which includes a fixed base, a workbench fixedly arranged on the fixed base, and an aluminum alloy milling device arranged on the workbench. A clamping device for clamping a workpiece is arranged at the central position of the workbench. The aluminum alloy milling device includes a robotic arm, an integrated function box arranged on the robotic arm, and a movable milling mechanism arranged in the integrated function box. The movable milling mechanism includes a rotating disk, a first rotating motor arranged on the rotating disk, a composite milling rod, and the composite milling rod meshes with the first rotating motor, solving the technical problem that the existing milling equipment can only perform milling operations of a single process during milling work and cannot perform milling operations of multiple processes, reducing work efficiency and increasing labor costs at the same time.

Description

Technical Field

[0001] The present invention relates to the field of milling equipment, and particularly to an aluminum alloy milling equipment and its working method. Background Art

[0002] Milling refers to using a rotating multi-edge tool to cut a workpiece, which is a high-efficiency machining method. During operation, the tool rotates (as the main motion), and the workpiece moves (as the feed motion). The workpiece can also be fixed, but in this case, the rotating tool must also move (simultaneously completing the main motion and the feed motion). The machine tools used for milling include horizontal milling machines, vertical milling machines, and large gantry milling machines. These machine tools can be ordinary machine tools or numerically controlled machine tools. The cutting process uses a rotating milling cutter as the tool. Milling is generally carried out on a milling machine or a boring machine and is suitable for machining planes, grooves, various formed surfaces (such as splines, gears, and threads), and special-shaped surfaces of molds, etc.

[0003] Conventional milling lathes include horizontal milling machines, vertical milling machines, gantry milling machines, profiling milling machines, universal milling machines, bar milling machines, etc. During the working process, a single type of milling machine can usually only perform milling operations for a single process. For example, if you want to machine a plane, you use the corresponding plane machining milling machine; if you want to machine a groove, you use the corresponding groove machining milling machine; if you want to form a special-shaped surface, you use the corresponding special milling machine. It is difficult to perform different types of milling operations on the same milling machine.

[0004] The invention patent with Chinese patent application number 202410639207.7 discloses a milling processing equipment for automobile aluminum alloy fittings, which relates to the technical field of milling processing. A milling processing equipment for automobile aluminum alloy fittings includes a machine cabin, in which a lower support mechanism is installed. A lower main shaft is arranged in the lower support mechanism. A bearing shaft is fixedly connected to the top end of the lower main shaft. A chuck seat slides in the bearing shaft. An inward displacement seat is arranged on the bottom side of the chuck seat. A shaft cylinder is fixedly connected to the bottom end of the inward displacement seat. The shaft cylinder is connected to the telescopic shaft. An outward displacement seat is connected in the bearing shaft; a spherical ring is slidably sleeved on the chuck. The spherical ring is embedded at the end of the bearing shaft; the chucks are respectively coupled with the chuck seat and the inward displacement seat; the chucks are coupled with the outward displacement seat; the workpiece is clamped from both ends to avoid the side wall of the workpiece being blocked during the processing. The chucks clamp and center the workpiece from the inside or outside to avoid the phenomenon of eccentricity of the workpiece. The technical solution proposed by the above invention mainly clamps and centers the workpiece from the inside or outside through the chucks, thereby avoiding the phenomenon of eccentricity of the workpiece. It mainly improves and innovates the clamping of the workpiece to increase the accuracy of the milling process and the eccentricity phenomenon. However, in the actual working process, the technical solution proposed by the above invention can still only perform milling operations for a single process and cannot realize multi-process milling operations. That is, there is still a need to replace the working position or equipment of the workpiece for complete processing. While the efficiency is reduced, the labor cost will increase. At the same time, repositioning is required after the transfer of the workpiece. If the process is cumbersome, it is also easy to reduce the machining accuracy of the workpiece. Summary of the Invention

[0005] Therefore, in view of the above problems, the present invention proposes an aluminum alloy milling equipment and its working method, which solves the technical problem that the existing milling equipment can only perform milling operations for a single process during milling work and cannot perform multi-process milling operations, reducing work efficiency while increasing labor costs.

[0006] To achieve the above object, the present invention adopts the following technical solutions: An aluminum alloy milling device includes a fixed base, a workbench fixedly arranged on the fixed base, and an aluminum alloy milling device arranged on the workbench. The aluminum alloy milling device is arranged at the four peripheral edges of the workbench, and a clamping device for clamping a workpiece is arranged at the central position of the workbench. The clamping device can move up and down in the vertical direction. The aluminum alloy milling device includes a robotic arm, an integrated function box arranged on the robotic arm, and a movable milling mechanism arranged in the integrated function box. The movable milling mechanism includes a rotating disk, a first rotating motor arranged on the rotating disk, and a composite milling rod. The composite milling rod meshes with the first rotating motor and rotates for milling under the drive of the first rotating motor. The first rotating motor and the composite milling rod deflect following the rotation of the rotating disk.

[0007] Further, the horizontal cross-section of the workbench is a rectangular structure, and an annular moving chute is arranged at the four peripheral edges of the workbench. The aluminum alloy milling device is arranged in the moving chute and moves in the moving chute according to instructions by motor drive.

[0008] Further, a receiving groove is arranged at the central position of the workbench, and the clamping device is arranged in the receiving groove. The clamping device includes a first clamping plate, a second clamping plate, and a third clamping plate. The first clamping plate is connected to the lower bottom surface of the receiving groove through an electric telescopic rod and moves up and down through the expansion and contraction of the electric telescopic rod. The second clamping plate and the third clamping plate are oppositely arranged on the inner side surface of the receiving groove.

[0009] Further, the second clamping plate and the third clamping plate are arranged at the upper middle part of the inner side surface of the receiving groove.

[0010] Further, the second clamping plate and the third clamping plate have the same structure. The second clamping plate and the third clamping plate perform telescopic movement in the horizontal direction, approaching or departing from the central axis of the receiving groove. Linkage clamping mechanisms are arranged between the second clamping plate, the third clamping plate and the first clamping plate. When the first clamping plate moves downward through the linkage clamping mechanism, the second clamping plate and the third clamping plate are driven to move towards the central axis of the receiving groove.

[0011] Further, the linkage clamping mechanism includes a first connecting rod fixedly arranged on the first clamping plate, and second connecting rods fixedly arranged on the second clamping plate and the third clamping plate. A first meshing tooth is arranged at the free end of the first connecting rod, and a second meshing tooth is arranged at the free end of the second connecting rod. The first meshing tooth and the second meshing tooth mesh with each other.

[0012] Further, a positioning channel is provided on the rotating disk, the composite milling rod is inserted into the positioning channel, a spring is provided on the inner top surface of the positioning channel, the spring is connected to the composite milling rod, and the composite milling rod makes an elastic movement under the action of the spring.

[0013] Further, the composite milling rod includes a first functional area, a second functional area, and a third functional area from top to bottom along the rod body. The second functional area and the third functional area are fixedly connected. The first functional area and the second functional area are rotatably connected through a bearing. A first external thread is provided on the first functional area, a first external gear is provided on the second functional area, a second rotating motor is provided on the rotating disk, the first functional area is meshed and connected with the second rotating motor through the first external thread, and the second functional area is meshed and connected with the first rotating motor through the first external gear.

[0014] Further, the first external thread includes a threaded surface and a smooth surface. In the projection area on the vertical plane, the proportion area of the threaded surface and the smooth surface is 3:2.

[0015] A working method of an aluminum alloy milling device includes the following steps:

[0016] S1. Workpiece clamping: The metal workpiece is placed on the clamping device on the workbench for workpiece positioning and clamping. After the workpiece is placed, the workpiece is magnetically fixed by the first clamping plate, and the second clamping plate and the third clamping plate synchronously clamp the workpiece from the side.

[0017] S2. Workpiece processing: The surface of the workpiece is milled by the aluminum alloy milling device, and the aluminum alloy milling device is moved and positioned in the moving chute.

[0018] S2.1. Surface milling: The composite milling rod in the aluminum alloy milling device is in a state perpendicular to the horizontal plane for milling operations.

[0019] S2.1. Inner groove milling: After the vertical groove milling is completed, the composite milling rod is deflected by the rotating disk to mill the inner groove on the inner side wall of the vertical groove.

[0020] S3. Tool retraction and completion.

[0021] By adopting the foregoing technical solutions, the beneficial effects of the present invention are:

[0022] 1. The present invention optimizes the connection relationship between the aluminum alloy milling device and the workbench, as well as the structural design of the aluminum alloy milling device itself, so as to achieve all-round milling of the workpiece and be able to perform plane groove milling and inner groove milling on the workpiece without displacement and repositioning and clamping of the workpiece. Specifically, the clamping device in the present invention is arranged at the center of the workbench, which is convenient for centering and clamping the workpiece and also facilitates the positioning milling operation of the aluminum alloy milling device. At the same time, the aluminum alloy milling device includes a robotic arm, which can provide a more comprehensive degree of freedom and improve the milling accuracy. The free end of the robotic arm is provided with an integrated function box, and a rotating disk is arranged in the integrated function box. During the working process, the composite milling rod is rotated by rotating the rotating disk, and the milling direction of the composite milling rod can be adjusted, so as to perform milling operations on the inner side wall of the vertical hole that has been milled and perform milling of the inner concave hole.

[0023] 2. The movement of the aluminum alloy milling device in the present invention is through the moving chute arranged around the periphery of the workbench. The moving chute is of a ring structure, which ensures that the aluminum alloy milling device can move in an all-round circular motion along the workbench and can cooperate with the robotic arm for more subtle spatial movement, further ensuring the milling accuracy.

[0024] 3. The clamping device adopted in the present invention also makes improvements and innovations in its structure to be more adaptable to the workpiece and provide all-round clamping, avoiding the decline of milling accuracy caused by the vibration of the workpiece due to the force during milling. The clamping device includes a first clamping plate, a second clamping plate and a third clamping plate that work together. Among them, the first clamping plate is used as a supporting plate, which is made of an electromagnet material. After being energized, it generates a high magnetic force to magnetically adsorb the workpiece. After adsorption, the first clamping plate will also generate a downward acting force under the action of the gravity of the workpiece, and then the second clamping plate and the third clamping plate are made to move towards the central axis of the accommodating groove through the linkage clamping mechanism, generating a clamping force on the workpiece. When clamping with this clamping device, an aluminum alloy milling device that does not generate magnetic adsorption with the first clamping plate needs to be used in a supporting manner to avoid interference during the working process.

[0025] 4. The linkage clamping mechanism in the present invention specifically includes a first connecting rod fixedly arranged on the first clamping plate, and a second connecting rod fixedly arranged on the second clamping plate and the third clamping plate. A first meshing tooth is arranged at the free end of the first connecting rod, and a second meshing tooth is arranged at the free end of the second connecting rod. The first meshing tooth and the second meshing tooth are meshed with each other, realizing the conversion of the originally vertically downward gravity into a lateral clamping force through component meshing. Moreover, the heavier the workpiece, the greater the downward pressure generated, and thus the greater the converted lateral clamping force. The first clamping plate itself has a basic electromagnetic force. And during the milling operations of the vertical groove and the inner groove, the composite milling rod always generates a downward pressure on the metal workpiece. Then, the clamping force received by the workpiece during the milling operation will only increase on the original basis, maintaining a firm clamping during the milling process.

[0026] 5. In the present invention, by rotating the rotating disk to drive the deflection of the composite milling rod, the milling operation of the inner groove on the inner side wall of the vertical groove after the vertical groove is processed is achieved, realizing the processing operation of two milling methods on the workpiece simultaneously without moving the workpiece.

[0027] 6. Further, in the aluminum alloy milling device of the present invention, there is a composite milling rod for realizing composite milling, which can reciprocate along its own axis. Its movement principle is to improve the structure of the composite milling rod, cooperate with a rotating motor to drive it, and at the same time, the composite milling rod generates an outward elastic force under the action of a spring. The first external thread on the first functional area includes a thread surface and a smooth surface. When the rotating motor meshes with the thread surface, it will drive the composite milling rod to move inward. When the rotating motor is connected to the smooth surface and no meshing occurs, the composite milling rod will pop out outward under the elastic force of the spring. And the spring adopts a high-elasticity spring to ensure that the composite milling rod will not move due to force and affect the milling accuracy after contacting the workpiece during the milling process. Along with the continuous rotation of the rotating motor, it continuously disconnects and connects with the thread surface and the smooth surface of the first external thread, realizing up and down movement and telescoping.

[0028] 7. In the method mentioned in the present invention, by dividing the milling process into surface milling and inner groove milling, the work of two milling processes is realized without shifting the workpiece, and increasing the milling diversity can ensure the milling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2Schematic top view structure of the present invention (simplified with dotted lines for the aluminum alloy milling device);

[0032] Figure 3 Schematic internal structure of the workbench in the present invention;

[0033] Figure 4 is Figure 1 Enlarged view at position A in

[0034] Figure 5 Schematic internal structure of the integrated function box in the present invention;

[0035] Figure 6 Schematic front view structure of the composite milling rod in the present invention;

[0036] Figure 7 Schematic top view structure of the composite milling rod in the present invention;

[0037] Figure 8 Flow chart of the working method in the present invention. Detailed implementation manners

[0038] To make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with the detailed implementation manners.

[0039] Please refer to Figures 1-8 , the present invention provides an aluminum alloy milling device, including a fixed base 1, a workbench 2 fixedly arranged on the fixed base 1, and an aluminum alloy milling device 3 arranged on the workbench 2. The aluminum alloy milling device 3 is arranged at the four peripheral edges of the workbench 2. A clamping device 4 for clamping a workpiece is arranged at the central position of the workbench 2. The clamping device 4 can move up and down in the vertical direction. The aluminum alloy milling device 3 includes a robotic arm 31, an integrated function box 32 arranged on the robotic arm 31, and a movable milling mechanism arranged in the integrated function box 32. The movable milling mechanism includes a rotating disk 5, a first rotating motor 52 arranged on the rotating disk 5, and a composite milling rod 6. The composite milling rod 6 meshes with the first rotating motor 52 and rotates for milling under the drive of the first rotating motor 52. The first rotating motor 52 and the composite milling rod 6 deflect following the rotation of the rotating disk 5. The rotation principle of the composite milling rod 6 is that the first rotating motor 52 rotates and drives the composite milling rod 6 to rotate through gears.

[0040] The horizontal cross-section of the workbench 2 is a rectangular structure. An annular moving chute 11 is arranged at the four peripheral edges of the workbench 2. The aluminum alloy milling device 3 is arranged in the moving chute 11 and moves in the moving chute 11 according to instructions by motor drive to perform all-round milling on the workpiece.

[0041] A receiving groove 21 is provided at the central position of the workbench 2, and the clamping device 4 is arranged in the receiving groove 21. The clamping device 4 includes a first clamping plate 41, a second clamping plate 42, and a third clamping plate 43. The first clamping plate 41 is connected to the lower bottom surface of the receiving groove 21 through an electric telescopic rod, and moves up and down through the expansion and contraction of the electric telescopic rod. The second clamping plate 42 and the third clamping plate 43 are oppositely arranged on the inner side surface of the receiving groove 21. Among them, the electric telescopic rod can be energized for expansion and contraction, lift up to receive the workpiece, and then the electric telescopic rod can be powered off after receiving, so that the workpiece generates a downward pressure by its own weight for fixation. The second clamping plate 42 and the third clamping plate 43 are arranged at the upper middle end of the inner side surface of the receiving groove 21;

[0042] The second clamping plate 42 and the third clamping plate 43 have the same structure. The second clamping plate 42 and the third clamping plate 43 perform telescopic movement in the horizontal direction, approaching or moving away from the central axis of the receiving groove 21. A linkage clamping mechanism is arranged between the second clamping plate 42, the third clamping plate 43 and the first clamping plate 41 respectively. When the first clamping plate 41 moves downward through the linkage clamping mechanism, it drives the second clamping plate 42 and the third clamping plate 43 to move towards the central axis of the receiving groove 21. Among them, an electromagnetic generating device is built in the first clamping plate 41, and after being energized, the first clamping plate 41 generates electromagnetic force to adsorb the workpiece, providing a better fixing effect on the workpiece. The electromagnetic generating device is a well-known device and will not be elaborated here.

[0043] The linkage clamping mechanism includes a first connecting rod 411 fixedly arranged on the first clamping plate 41, and a second connecting rod 421 fixedly arranged on the second clamping plate 42 and the third clamping plate 43. A first meshing tooth 4111 is arranged at the free end of the first connecting rod 411, and a second meshing tooth 4211 is arranged at the free end of the second connecting rod 421. The first meshing tooth 4111 and the second meshing tooth 4211 are meshed with each other, so that the first clamping plate 41 is respectively linked with the second clamping plate 42 and the third clamping plate 43.

[0044] A positioning channel 53 is provided on the rotating disk 5. The composite milling rod 6 is inserted into the positioning channel 53. A spring 7 is provided on the inner top surface of the positioning channel 53. The spring 7 is connected to the composite milling rod 6. The composite milling rod 6 makes an elastic movement under the action of the spring 7. The composite milling rod 6 includes a first functional area a, a second functional area b, and a third functional area c from top to bottom along the rod body. The second functional area b and the third functional area c are fixedly connected. The first functional area a and the second functional area b are rotatably connected through a bearing. A first external thread 61 is provided on the first functional area a. A first external gear 62 is provided on the second functional area b. A second rotating motor 51 is provided on the rotating disk 5. The first functional area a is meshed and connected to the second rotating motor 51 through the first external thread 61. The second functional area b is meshed and connected to the first rotating motor 52 through the first external gear 62. The first external thread 61 includes a thread surface 611 and a smooth surface 612. In the projection area on the vertical plane, the proportion areas of the thread surface 611 and the smooth surface 612 are 3:2.

[0045] In this embodiment, the working method of the above milling equipment is synchronously proposed. A working method of an aluminum alloy milling equipment includes the following steps:

[0046] S1. Workpiece clamping: The metal workpiece is placed on the clamping device 4 on the workbench 2 for workpiece positioning and clamping. After the workpiece is placed, the workpiece is magnetically fixed by the first clamping plate 41, and the second clamping plate 42 and the third clamping plate 43 synchronously clamp the workpiece from the side.

[0047] S2. Workpiece processing: The surface of the workpiece is milled by the aluminum alloy milling device 3. The aluminum alloy milling device 3 performs moving positioning in the moving chute 11.

[0048] S2.1. Surface milling: The composite milling rod 6 in the aluminum alloy milling device 3 performs milling operations in a state perpendicular to the horizontal plane.

[0049] S2.1. Inner groove milling: After the vertical groove milling is completed, the composite milling rod 6 is deflected by the rotating disk to perform milling operations on the inner groove of the inner side wall of the vertical groove.

[0050] S3. Tool withdrawal and completion.

[0051] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0052] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An aluminum alloy milling equipment, comprising a fixed base, a workbench fixedly arranged on the fixed base, and an aluminum alloy milling device arranged on the workbench, characterized in that: The aluminum alloy milling device is arranged on the edges of the workbench, and a clamping device for clamping a workpiece is arranged at the center of the workbench, and the clamping device can be lifted up and down in the vertical direction. The aluminum alloy milling device includes a mechanical arm, an integrated function box arranged on the mechanical arm, and a movable milling mechanism arranged in the integrated function box. The movable milling mechanism includes a rotating disk, a first rotating motor arranged on the rotating disk, and a composite milling rod. The composite milling rod is meshed with the first rotating motor and performs rotational milling under the drive of the first rotating motor. The first rotating motor and the composite milling rod are deflected following the rotation of the rotating disk. The rotating disk is provided with a positioning channel, the compound milling rod is inserted in the positioning channel, the inner top surface of the positioning channel is provided with a spring, the spring is connected to the compound milling rod, and the compound milling rod generates elastic movement under the action of the spring; The composite milling rod comprises a first functional area, a second functional area, and a third functional area from top to bottom along the rod body, the second functional area and the third functional area are fixedly connected, the first functional area and the second functional area are rotatably connected via a bearing, the first functional area is provided with a first external thread, the second functional area is provided with a first external gear, the rotating disk is provided with a second rotating motor, the first functional area is meshedly connected with the second rotating motor via the first external thread, and the second functional area is meshedly connected with the first rotating motor via the first external gear; The first external thread includes a thread surface and a smooth surface. In the projection area on the vertical plane, the thread surface and the smooth surface account for an area ratio of 3:

2.

2. The aluminum alloy milling equipment according to claim 1, characterized in that: The horizontal cross-section of the workbench is a rectangular structure. The edges of the workbench are provided with an annular movable chute. The aluminum alloy milling device is arranged in the movable chute and is driven by a motor to move in the movable chute according to instructions.

3. The aluminum alloy milling equipment according to claim 2, characterized in that: A receiving groove is arranged at the center position of the workbench, and the clamping device is arranged in the receiving groove. The clamping device includes a first clamping plate, a second clamping plate, and a third clamping plate. The first clamping plate is connected to the lower bottom surface of the receiving groove through an electric telescopic rod, and is lifted up and down by the extension and retraction of the electric telescopic rod. The second clamping plate and the third clamping plate are relatively arranged on the inner side surface of the receiving groove.

4. The aluminum alloy milling equipment according to claim 3, characterized in that: The second clamping plate and the third clamping plate are arranged at the middle and upper ends of the inner side surface of the accommodating groove.

5. The aluminum alloy milling equipment according to claim 4, characterized in that: The second clamping plate and the third clamping plate have the same structure. The second clamping plate and the third clamping plate can telescope in the horizontal direction, approaching or moving away from the central axis of the accommodating groove. A linkage clamping mechanism is provided between the second clamping plate and the third clamping plate and the first clamping plate. The linkage clamping mechanism can drive the second clamping plate and the third clamping plate to move toward the central axis of the accommodating groove when the first clamping plate moves downward.

6. The aluminum alloy milling equipment according to claim 5, characterized in that: The linkage clamping mechanism includes a first connecting rod fixedly arranged on the first clamping plate, and a second connecting rod fixedly arranged on the second clamping plate and the third clamping plate. The free end of the first connecting rod is provided with a first meshing tooth, and the free end of the second connecting rod is provided with a second meshing tooth. The first meshing tooth and the second meshing tooth are meshed with each other.

7. A working method of the aluminum alloy milling equipment according to claim 6, characterized in that: The following steps are involved: S1, workpiece clamping; the workpiece is positioned and clamped by placing the metal workpiece on the clamping device on the workbench, and after the workpiece is placed, the workpiece is magnetically fixed by the first clamping plate, and the second clamping plate and the third clamping plate simultaneously clamp and fix the workpiece from the side; S2, workpiece processing: milling the workpiece surface by an aluminum alloy milling device, and the aluminum alloy milling device is moved and positioned in a moving slide; S2.1, surface milling; the aluminum alloy milling device performs milling operation with the composite milling rod perpendicular to the horizontal plane; S2.1, inner groove milling; After the vertical slot milling is completed, the compound milling rod is deflected by rotating the disk to perform the milling operation of the inner groove on the inner side wall of the vertical slot; S3. Retract the knife and complete the work.

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