Aluminum alloy milling equipment and working method thereof

Abstract

The invention relates to the field of milling equipment, in particular to aluminum alloy milling equipment and a working method thereof.The aluminum alloy milling equipment comprises a fixed base, a workbench fixedly arranged on the fixed base and an aluminum alloy milling device arranged on the workbench, and a clamping device used for clamping a workpiece is arranged at the center position of the workbench; the aluminum alloy milling device comprises 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 comprises a rotating disc, a first rotating motor arranged on the rotating disc and a composite milling rod, and the composite milling rod is meshed with the first rotating motor; the technical problems that when existing milling equipment conducts milling work, only single-procedure milling work can be conducted, multi-procedure milling work cannot be conducted, the working efficiency is reduced, and meanwhile the labor cost is increased are solved.

Description

Technical Field

[0001] The invention relates to the field of milling equipment, and in particular to aluminum alloy milling equipment and a working method thereof. Background Art

[0002] Milling refers to the use of a rotating multi-edged tool to cut a workpiece, which is a highly efficient processing 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 at this time the rotating tool must also move (to complete the main motion and feed motion at the same time). The machine tools used for milling include horizontal milling machines or vertical milling machines, as well as large gantry milling machines. These machine tools can be ordinary machine tools or CNC machine tools. The cutting process uses a rotating milling cutter as a tool. Milling is generally performed on a milling machine or a boring machine, and is suitable for processing planes, grooves, various forming surfaces (such as splines, gears and threads) and special surfaces of molds.

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

[0004] The invention patent with Chinese patent application number 202410639207.7 discloses a milling processing equipment for automobile aluminum alloy accessories, which relates to the field of milling processing technology. A milling processing equipment for automobile aluminum alloy accessories includes a cabin, a lower end support mechanism is installed in the cabin, a lower end spindle is arranged in the lower end support mechanism, a bearing shaft is fixedly connected to the top of the lower end spindle, a chuck seat is slid 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, and an outward displacement seat is connected in the bearing shaft; a spherical ring is provided on the sliding sleeve of the clamping jaw, and the spherical ring is embedded in the end of the bearing shaft; the clamping jaw is coupled with the chuck seat and the inward displacement seat respectively; the clamping jaw is coupled with the outward displacement seat; the workpiece is clamped from both ends to avoid the side wall of the workpiece from being blocked during the processing, and the clamping jaw clamps and centers the workpiece from the inside or outside to avoid the eccentricity of the workpiece. The technical solution proposed in the above invention is mainly to clamp and center the workpiece from the inside or outside by means of the clamping claws, thereby avoiding the 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 in the above invention can only perform the milling operation of a single process, and cannot realize the milling operation of the whole process, that is, the workpiece still needs to change the workstation or replace the equipment for complete processing, which reduces the efficiency and increases the labor cost. At the same time, the workpiece needs to be repositioned after the transfer. If the process is cumbersome, it is also easy to lead to a decrease in the accuracy of workpiece processing. Summary of the invention

[0005] Therefore, in response to the above problems, the present invention proposes an aluminum alloy milling equipment and a working method thereof, which solves the technical problem that the existing milling equipment can only perform a single process milling operation but cannot perform multiple process milling operations, thereby reducing work efficiency and increasing labor costs.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: 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, 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 position of the workbench, and the clamping device can be lifted up and down in a vertical direction. The aluminum alloy milling device comprises a mechanical arm, an integrated functional box arranged on the mechanical arm, and an active milling mechanism arranged in the integrated functional box. The active milling mechanism comprises 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.

[0007] Furthermore, the horizontal cross-section of the workbench is a rectangular structure, and an annular movable groove is arranged on the four edges of the workbench. The aluminum alloy milling device is arranged in the movable groove and is driven by a motor to move in the movable groove according to instructions.

[0008] Furthermore, a receiving groove is provided 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.

[0009] Furthermore, 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.

[0010] Furthermore, the second clamping plate and the third clamping plate have the same structure, and 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, the third clamping plate and the first clamping plate, and 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.

[0011] Furthermore, 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, and the first meshing tooth and the second meshing tooth are meshed with each other.

[0012] Furthermore, a positioning channel is provided on the rotating disk, the compound 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 compound milling rod, and the compound milling rod generates elastic movement under the action of the spring.

[0013] Furthermore, 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 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.

[0014] Furthermore, the first external thread includes a thread surface and a smooth surface, and in the projection area on the vertical plane, the thread surface and the smooth surface account for an area ratio of 3:2.

[0015] A working method of aluminum alloy milling equipment comprises the following steps: 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 completing the vertical groove milling, the compound milling rod is deflected by rotating the disk to perform the inner groove milling operation on the inner side wall of the vertical groove; S3. Retract the knife and complete the work.

[0016] By adopting the above technical solution, the beneficial effects of the present invention are: 1. The present invention achieves all-round milling processing of the workpiece and can perform plane groove milling and inner groove milling of the workpiece without shifting the workpiece and repositioning and clamping the workpiece by optimizing 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. Specifically, the clamping device in the present invention is arranged at the center position of the workbench, which is convenient for centering the workpiece and facilitating the positioning milling operation of the aluminum alloy milling device. At the same time, the aluminum alloy milling device includes a mechanical arm, which can provide more comprehensive degrees of freedom and improve the milling accuracy. An integrated function box is arranged at the free end of the mechanical arm, 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 operation on the inner wall of the vertical hole that has been milled and perform milling of the inner concave hole.

[0017] 2. The movement of the aluminum alloy milling device in the present invention is achieved through a movable slide groove arranged around the edges of the workbench. The movable slide groove is a ring structure, which ensures that the aluminum alloy milling device can move in an all-round ring along the workbench, and can cooperate with the robot arm to perform more subtle spatial movements, further ensuring the milling accuracy.

[0018] 3. The clamping device used in the present invention has also been improved and innovated in structure, so that it is more adaptable to the workpiece and provides all-round clamping, so as to avoid the workpiece being subjected to force and vibrating during the milling process, resulting in a decrease in milling accuracy. The clamping device includes a first clamping plate, a second clamping plate and a third clamping plate that work in conjunction with each other, wherein the first clamping plate serves as a supporting plate, which is made of an electromagnet material. After being energized, it generates high magnetism to magnetically adsorb the workpiece. After adsorption, the first clamping plate will also generate a downward force under the action of the gravity of the workpiece, and then the second clamping plate and the third clamping plate are moved toward the central axis of the accommodating groove through the linkage clamping mechanism, thereby generating a clamping force on the workpiece. The clamping device needs to be used in conjunction with an aluminum alloy milling device that does not generate magnetic adsorption with the first clamping plate to avoid interference during the working process.

[0019] 4. The linkage clamping mechanism in the present invention is specifically a first connecting rod fixedly arranged on the first clamping plate, 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, 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, so that the original vertical downward gravity is converted into a horizontal clamping force through the meshing of the components, and as the mass of the workpiece is heavier, the downward pressure generated is greater, and the converted horizontal clamping force is also greater, and the first clamping plate itself is basically electromagnetic force, and when milling vertical grooves and inner grooves, the composite milling rod will always generate a downward pressure on the metal workpiece, then the clamping force on the workpiece during the milling operation will only increase on the original basis, so as to maintain a stable clamping during the milling process.

[0020] 5. In the present invention, the rotation of the rotating disk drives the deflection of the composite milling rod, so that the milling operation of the inner groove of the inner side wall of the vertical groove is achieved after the vertical groove is processed, and two milling methods are simultaneously performed on the workpiece without moving the workpiece.

[0021] 6. In the present invention, a device is further provided in the aluminum alloy milling device for realizing reciprocating motion of the composite milling rod along its own axis. The movement principle is achieved by improving the structure of the composite milling rod and driving it with a rotating motor. At the same time, the composite milling rod generates an outward elastic force under the action of a spring, and the first external thread on the first functional area includes a threaded surface and a smooth surface. When the rotating motor engages with the threaded surface, it drives the composite milling rod to move inward, and when the rotating motor is connected to the smooth surface, assuming that no engagement occurs, the composite milling rod will pop outward under the elastic force of the spring, and the spring adopts a high-elasticity spring to ensure that the composite milling rod is forced to move after contacting the workpiece during the milling process, affecting the milling accuracy. As the rotating motor continues to rotate, it is continuously and discontinuously connected with the threaded surface and the smooth surface of the first external thread to achieve up and down movement and extension.

[0022] 7. In the method mentioned in the present invention, by dividing the milling process into surface milling and inner groove milling, it is achieved that the two milling processes are performed without shifting the workpiece, and increasing the milling diversity can ensure the milling accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the present invention (the aluminum alloy milling device is simplified by dotted lines); Figure 3 It is a schematic diagram of the internal structure of the workbench in the present invention; Figure 4 for Figure 1 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the internal structure of the integrated function box in the present invention; Figure 6 It is a schematic diagram of the front structure of the composite milling rod in the present invention; Figure 7 It is a schematic diagram of the top view of the composite milling rod in the present invention; Figure 8 It is a flow chart of the working method in the present invention. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] See also Figure 1-Figure 8 The present invention provides an aluminum alloy milling device, comprising 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, wherein the aluminum alloy milling device 3 is arranged on the edges of the workbench 2, and a clamping device 4 for clamping a workpiece is arranged at the center position of the workbench 2, and the clamping device 4 can be lifted up and down in the vertical direction, the aluminum alloy milling device 3 comprises a mechanical arm 31, an integrated function box 32 arranged on the mechanical arm 31, and an active milling mechanism arranged in the integrated function box 32, the active milling mechanism comprises 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 and the first rotating motor 52 are meshed with each other and rotate and mill under the drive of the first rotating motor 52, the first rotating motor 52 and the composite milling rod 6 are deflected following the rotation of the rotating disk 5, wherein 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.

[0026] The horizontal cross-section of the workbench 2 is a rectangular structure. The edges of the workbench 2 are provided with an annular movable groove 11. The aluminum alloy milling device 3 is arranged in the movable groove 11 and is driven by a motor to move in the movable groove 11 according to instructions to perform all-round milling on the workpiece.

[0027] A receiving groove 21 is provided at the center of the workbench 2, and the clamping device 4 is provided 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 is lifted up and down by the extension and retraction of the electric telescopic rod. The second clamping plate 42 and the third clamping plate 43 are relatively arranged on the inner side surface of the receiving groove 21, wherein the electric telescopic rod can be electrified to extend and retract, and lifted up to receive the workpiece. After receiving, the electric telescopic rod can be de-energized, and the downward pressure generated by the weight of the workpiece is used to fix it. The second clamping plate 42 and the third clamping plate 43 are arranged at the middle and upper end of the inner side surface of the receiving groove 21. 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 can telescope in the horizontal direction, approaching or moving away from the central axis of the accommodating groove 21. A linkage clamping mechanism is provided between the second clamping plate 42 and the third clamping plate 43 and the first clamping plate 41. The linkage clamping mechanism enables the second clamping plate 42 and the third clamping plate 43 to move toward the central axis of the accommodating groove 21 when the first clamping plate 41 moves downward. The first clamping plate 41 has an electromagnetic generating device built in. When powered on, the first clamping plate 41 generates electromagnetic force to adsorb the workpiece, thereby providing a better fixing effect on the workpiece. The electromagnetic generating device is a well-known device and will not be described in detail here.

[0028] 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. The free end of the first connecting rod 411 is provided with a first meshing tooth 4111, and the free end of the second connecting rod 421 is provided with a second meshing tooth 4211. 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.

[0029] The rotating disk 5 is provided with a positioning channel 53, the compound milling rod 6 is inserted in the positioning channel 53, the inner top surface of the positioning channel 53 is provided with a spring 7, the spring 7 is connected to the compound milling rod 6, the compound milling rod 6 generates elastic movement under the action of the spring 7, the compound milling rod 6 includes a first functional area a, a second functional area b, and a third functional area c along the rod body from top to bottom, 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, The first functional area a is provided with a first external thread 61, the second functional area b is provided with a first external gear 62, and the rotating disk 5 is provided with a second rotating motor 51. The first functional area a is meshed and connected with the second rotating motor 51 through the first external thread 61, and the second functional area b is meshed and connected with 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 thread surface 611 and the smooth surface 612 account for an area ratio of 3:2.

[0030] This embodiment simultaneously proposes a working method of the above-mentioned milling equipment, a working method of aluminum alloy milling equipment, comprising the following steps: S1, workpiece clamping; the workpiece is positioned and clamped by placing the metal workpiece on the clamping device 4 on the workbench 2, and 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 simultaneously clamp and fix the workpiece from the side; S2, workpiece processing; the surface of the workpiece is milled by the aluminum alloy milling device 3, and the aluminum alloy milling device 3 is moved and positioned in the movable chute 11; S2.1, surface milling; the composite milling rod 6 in the aluminum alloy milling device 3 is in a state of being perpendicular to the horizontal plane for milling operation; S2.1, inner groove milling; after completing the vertical groove milling, the compound milling rod 6 is deflected by rotating the disk to perform the inner groove milling operation on the inner side wall of the vertical groove; S3. Retract the knife and complete the work.

[0031] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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 position of the workbench. 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 an active milling mechanism arranged in the integrated function box. The active 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.

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. The aluminum alloy milling equipment according to claim 6, characterized in that: 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.

8. The aluminum alloy milling equipment according to claim 7, characterized in that: The compound 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, and 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, and 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.

9. The aluminum alloy milling equipment according to claim 8, characterized in that: 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.

10. A working method of the aluminum alloy milling equipment according to claim 9, 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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