Loading disc milling and drilling integrated machining device and machining method

Abstract

The invention provides a loading tray milling and drilling integrated machining device and method, and relates to the technical field of loading tray machining, the loading tray milling and drilling integrated machining device comprises a bottom plate, a conveying structure used for conveying a plurality of loading trays in an assembly line mode is arranged on the bottom plate, and a lifting clamping mechanism is arranged on the conveying structure and below the loading trays; a lifting clamping mechanism is arranged on the base, a milling device and a drilling machine are arranged above the lifting clamping mechanism, the drilling machine is fixedly arranged on the transverse moving mechanism, the milling device is arranged close to the drilling machine, and a first limiting assembly and a second limiting assembly are arranged on the two sides of the lifting clamping mechanism respectively and form an overturning assembly used for rotating the loading disc by 180 degrees. According to the milling and drilling integrated machining device and method for the loading disc, the milling process and the drilling process of the loading disc can be integrated, the clamping frequency is reduced, and multi-procedure machining is completed through one-time clamping.

Description

Technical Field

[0001] This invention belongs to the field of load-bearing disc processing technology, specifically relating to an integrated milling and drilling processing device and method for load-bearing discs. Background Technology

[0002] Load-bearing discs (such as driveshaft connecting discs and wheel hub flanges in heavy-duty trucks) are key components in the transmission and driving systems of heavy-duty vehicles. These parts typically have disc-like structural features, requiring not only the machining of high-precision connecting holes but also the machining of toothed rings or complex contours on the outer edge of the flange. In current actual production, due to the functional limitations of processing equipment and the division of process routes, the processing of such parts generally adopts a "multi-process, multi-equipment" workflow.

[0003] First, the gear ring or outer edge contour needs to be milled on a first piece of equipment (such as a CNC milling machine or a dedicated gear shaper / milling machine). Then, the semi-finished product needs to be transferred to another piece of equipment (such as a radial drilling machine or a vertical machining center) for a second process: drilling multiple through holes, threaded holes, or positioning holes on the disc. However, this traditional machining method has the following significant drawbacks:

[0004] The workpiece needs to be clamped, positioned, and transferred multiple times between different machine tools, which increases the labor intensity of workers. Moreover, each clamping requires re-alignment, and multiple clamping inevitably leads to the conversion of positioning reference, which can easily generate cumulative positioning errors, increase a lot of auxiliary operation time, and disrupt the continuity of production. In addition, drilling and milling equipment need to be equipped at the same time, which increases the space occupied in the factory and the fixed asset investment in equipment. Summary of the Invention

[0005] The purpose of this invention is to provide an integrated milling and drilling processing device and method for load-bearing discs, which solves the technical problem of how to integrate the milling and drilling processes of load-bearing discs into one, reduces the number of clamping operations, and enables multiple processing steps to be completed in one clamping operation.

[0006] A milling and drilling integrated processing device for load-bearing discs includes a base plate, on which a conveyor structure for the assembly line transfer of multiple load-bearing discs is provided. A lifting and clamping mechanism is provided on the conveyor structure and below the load-bearing discs. A milling machine and a drilling machine are provided above the lifting and clamping mechanism. The milling machine and the drilling machine are both fixedly mounted on a transverse moving mechanism. Limiting component one and limiting component two are respectively provided on both sides of the lifting and clamping mechanism, which together constitute a flipping component for rotating the load-bearing discs 180°.

[0007] The limiting component includes a first lower rotating cylinder, a first positioning plate fixedly connected to the upper free end of the first lower rotating cylinder, and an upper rotating cylinder horizontally fixed on the first positioning plate. The upper rotating cylinder is connected to a first clamping member.

[0008] The second limiting component includes a second lower rotating cylinder, a second positioning plate fixedly connected to the upper free end of the second lower rotating cylinder, and a rotating column whose one end is horizontally rotatably connected to the second positioning plate via a rubber ring. The rotating column is connected to the second clamping member.

[0009] One end of the rotating column is connected to the second positioning plate by an interference fit of a rubber ring. In this way, under greater friction, the rotating column will only rotate when an external force is applied. When no external force is applied, the rotating column will not move.

[0010] The first clamping member includes a first fixed frame, a first clamping cylinder horizontally fixed on the first fixed frame, and a first arc rod with one end connected to the free end of the first clamping cylinder. There are two first arc rods, which are arranged vertically.

[0011] The second clamping component includes a second fixed frame, a second clamping cylinder horizontally fixed on the second fixed frame, and a second arc rod with one end connected to the free end of the second clamping cylinder. There are two second arc rods, which are arranged vertically and vertically respectively. The first arc rod and the second arc rod are centrally symmetrical about the center of the load plate.

[0012] The conveying structure consists of two parallel conveyor belts, a drive shaft passing through the ends of the conveyor belts, a lower drive motor connected to the drive shaft, and a support rod horizontally arranged inside the conveyor belts. The two ends of the support rod are fixedly connected to the support, and the drive shaft is rotatably mounted on the support. There is a gap between the two conveyor belts, and the two sides of the load plate are respectively placed on the two conveyor belts.

[0013] The lifting clamping mechanism consists of a vertically mounted lifting cylinder, a three-jaw chuck coaxially fixed at the free end above the lifting cylinder, and a power column coaxially fixed on the base below the lifting cylinder. The power column is rotatably connected to the positioning seat and is driven by a servo motor.

[0014] It should be noted that, for the sake of simplifying the design, the positioning seat and servo motor are not shown in the attached drawings, but this does not affect the implementation of this solution; in addition, the power column can be driven and connected to the servo motor through a synchronous pulley and a synchronous belt. The connection method of the synchronous pulley and the synchronous belt is a common connection method in existing technology, and will not be described in detail here.

[0015] The lateral movement mechanism includes a horizontally arranged rack, a movable frame slidably arranged on the rack, a gear meshing with the side of the rack, and an upper drive motor coaxially connected to the gear. A left plate and a right plate are fixed on both sides of the bottom end of the movable frame, respectively. A milling machine and a drilling machine are fixed on the left plate and the right plate, respectively.

[0016] An industrial camera is fixed to the bottom of the mobile frame and is positioned between the left and right plates. The industrial camera is connected to a host computer, which is equipped with 3D modeling software and is connected to the servo motor via a controller.

[0017] A method for integrated milling and drilling of heavy-duty discs, specifically including the following steps:

[0018] Step S1: Using the front-end robotic arm, the load plate is placed between two parallel conveyor belts. Under the action of the lower drive motor, it is transported forward and stops above the lifting and clamping mechanism.

[0019] Step S2: The lifting cylinder operates, driving the three-jaw chuck to rise. The three-jaw chuck extends into the load plate and supports the load plate.

[0020] Step S3: First, adjust the milling equipment into position. Under the action of the servo motor, drive the load plate to rotate slowly. At the same time, start the milling process.

[0021] Step S4: After the milling process is completed, the first lower rotary cylinder and the second lower rotary cylinder are used to drive the first clamping part and the second clamping part to rotate and fit against the outside of the load plate. At this time, the lifting cylinder drives the three-jaw chuck to descend and disengage from the load plate.

[0022] Step S5: Under the action of the upper rotary cylinder, the load plate is rotated 180°, and the lifting cylinder drives the three-jaw chuck to rise again to support the load plate. At this time, the drilling machine is adjusted to a suitable position, and the two clamping components are disengaged from the load plate.

[0023] Step S6: The industrial camera takes a picture of the top of the load-bearing plate and transmits it to the host computer. It is then imported into the 3D modeling software on the host computer. Using the analysis and measurement angle function in the software, the angle α between the center point of the hole to be drilled and the center point of the drill bit and the center of the load-bearing plate is measured. The servo motor is driven by the controller to rotate the load-bearing plate by the angle α so that the center of the hole to be drilled and the center of the drill bit are aligned vertically. The drilling machine is then started to begin drilling.

[0024] Ideally, the 3D modeling software could be UG, SOLIDWORKS, or similar software.

[0025] Step S7: After the first hole is drilled, the controller controls the servo motor to drive the load plate to rotate at an angle β, and performs the subsequent drilling process for multiple holes one by one.

[0026] Step S8: After the entire rotation is completed, the lifting clamping mechanism disengages from the load plate, the load plate falls between the two conveyor belts and is transported away until the end robot removes it; repeat the above process.

[0027] To simplify the design, both the front-end and end-end robotic arms use existing technologies, and their specific structures are not limited. The principle is that they only need to achieve the function of picking up and placing the load plate. This is not an innovation and will not be described in detail here.

[0028] The technical features not described in detail in this solution can be implemented based on the conventional understanding and operation of those skilled in the art, combined with existing technology, and will not be elaborated here.

[0029] The beneficial effects of this invention are as follows:

[0030] (1) A conveying structure is provided, which, together with the lifting and clamping mechanism, achieves the following technical effects:

[0031] One method is to place the load-bearing plate on two transmission belts and transport it to the lifting and clamping mechanism to achieve streamlined production.

[0032] Secondly, the clamping, lifting, rotation adjustment, milling and drilling of the load-bearing plate are all set in one station, which avoids the trouble of the load-bearing plate needing to be processed in different stations in the past, and improves production efficiency in conjunction with the conveyor belt.

[0033] (2) Limiting component one and limiting component two are provided, which together constitute a flipping component for rotating the load plate by 180°, achieving the following technical effects:

[0034] Firstly, under the action of the first and second arc rods, it is locked on the outside of the load-bearing plate and is set in a centrally symmetrical manner around its center, making it convenient and quick to rotate;

[0035] Secondly, a lower rotary cylinder is set up. When the flipping component is not working, the lower rotary cylinder is used to rotate the first and second limit components outward by a certain angle to avoid interfering with the milling and drilling process. The overall layout is reasonable.

[0036] (3) It is equipped with a lateral moving mechanism to adjust the milling equipment, drilling machine and industrial camera laterally, so that the multi-functional processing can be realized on the same moving station, which improves efficiency and reduces costs;

[0037] (4) This solution is equipped with an industrial camera. With the help of a host computer and 3D modeling software, the angle α between the center point of the hole to be drilled and the center point of the drill bit and the center of the load plate can be obtained quickly. Based on this angle α, the rotation angle of the load plate can be obtained very quickly and accurately to two or three decimal places. This idea of ​​using a host computer and 3D modeling software to obtain the rotation angle greatly reduces the drilling processing cost and improves the processing accuracy, making it convenient for those skilled in the art to operate and implement. Attached Figure Description

[0038] Figure 1 This is a cross-sectional schematic diagram of the prior art processing device in this invention.

[0039] Figure 2 This is a schematic diagram of the integrated processing device in Embodiment 1 of the present invention.

[0040] Figure 3 This is a top view of the integrated processing device in Embodiment 1 of the present invention.

[0041] Figure 4 This is a schematic diagram of the transmission structure in Embodiment 1 of the present invention.

[0042] Figure 5 This is a schematic diagram of the lifting and clamping mechanism in Embodiment 1 of the present invention.

[0043] Figure 6 This is a schematic diagram of the flipping component in Embodiment 1 of the present invention.

[0044] Figure 7 This is a schematic diagram of the structure of the limiting component 1 in Embodiment 1 of the present invention.

[0045] Figure 8 This is a partially enlarged structural diagram of the lateral movement mechanism in Embodiment 1 of the present invention.

[0046] Figure 9 This is a schematic diagram of the load-bearing disk in Embodiment 1 of the present invention.

[0047] Figure 10 This is a schematic diagram of the integrated processing device in Embodiment 2 of the present invention.

[0048] The attached figures are labeled as follows: 1. Base plate; 2. First lower rotary cylinder; 3. Support; 31. Track groove plate; 4. Upper rotary cylinder; 5. Support rod; 6. Conveyor belt; 7. Gear rack; 8. First fixed frame; 9. First clamping cylinder; 10. First arc rod; 11. Loading plate; 111. Milling gear ring; 112. Drilling hole; 12. Moving frame; 13. Upper drive motor; 14. Gear; 141. Left plate; 142. Industrial camera; 143. Right plate; 15. Three-jaw chuck; 151. Lifting cylinder; 152. Power column; 16. Drive shaft; 17. Lower drive motor; A. Milling gear ring; B. Drilling hole; C. Drilling platform. Detailed Implementation

[0049] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0050] Example 1

[0051] See Figures 1-9 A milling and drilling integrated machining device for load-bearing discs includes a base plate 1. A conveyor structure for the continuous transport of multiple load-bearing discs 11 is mounted on the base plate 1. A lifting and clamping mechanism is located on the conveyor structure and below the load-bearing discs 11. A milling machine and a drilling machine are located above the lifting and clamping mechanism. Both the milling machine and the drilling machine are fixedly mounted on a transverse moving mechanism. Limiting components one and two are respectively provided on both sides of the lifting and clamping mechanism, which together constitute a flipping assembly for rotating the load-bearing discs 11 180°. The load-bearing discs 11 are existing technology components and will not be described in detail here; please refer to the attached drawings.

[0052] in, Figure 1 The diagram shows a cross-section of an existing processing device, which has two workstations set up for milling gear ring A and drilling B, respectively, and C is the drilling platform.

[0053] The limiting component includes a first lower rotating cylinder 2, a first positioning plate fixedly connected to the upper free end of the first lower rotating cylinder 2, and an upper rotating cylinder 4 horizontally fixed on the first positioning plate. The upper rotating cylinder 4 is connected to the first clamping member.

[0054] The second limiting component includes a second lower rotating cylinder, a second positioning plate fixedly connected to the upper free end of the second lower rotating cylinder, and a rotating column whose one end is horizontally rotatably connected to the second positioning plate via a rubber ring. The rotating column is connected to the second clamping member.

[0055] The first clamping component includes a first fixed frame 8, a first clamping cylinder 9 horizontally fixed on the first fixed frame 8, and a first arc rod 10 with one end connected to the free end of the first clamping cylinder 9. There are two first arc rods 10, which are arranged vertically and vertically respectively.

[0056] The second clamping component includes a second fixed frame, a second clamping cylinder horizontally fixed on the second fixed frame, and a second arc rod with one end connected to the free end of the second clamping cylinder. There are two second arc rods, which are arranged vertically and vertically respectively. The first arc rod 10 and the second arc rod are centrally symmetrical about the center of the load plate 11.

[0057] The conveying structure consists of two parallel conveyor belts 6, a drive shaft 16 passing through the end of the conveyor belt 6, a lower drive motor 17 connected to the drive shaft 16, and a support rod 5 horizontally arranged inside the conveyor belt 6. The two ends of the support rod 5 are fixedly connected to the support, and the drive shaft 16 is rotatably arranged on the support. There is a gap between the two conveyor belts 6, and the two sides of the load plate 11 are respectively placed on the two conveyor belts 6.

[0058] The lifting clamping mechanism includes a vertically mounted lifting cylinder 151, a three-jaw chuck 15 coaxially fixed at the free end above the lifting cylinder 151, and a power column 152 coaxially fixed on the base below the lifting cylinder 151. The power column 152 is rotatably connected to the positioning seat and is driven by a servo motor.

[0059] The transverse movement mechanism includes a support 3, a rack 7 horizontally mounted on the support 3, a movable frame 12 slidably mounted on the rack 7, a gear 14 meshing with the side of the rack 7, and an upper drive motor 13 coaxially connected to the gear 14. A left plate 141 and a right plate 143 are fixed on both sides of the bottom end of the movable frame 12, respectively. A milling machine and a drilling machine are fixed on the left plate 141 and the right plate 143, respectively.

[0060] An industrial camera 142 is fixed at the bottom of the mobile frame 12. The industrial camera 142 is located between the left plate 141 and the right plate 143. The industrial camera 142 is connected to the host computer, which has 3D modeling software. The host computer is connected to the servo motor through a controller.

[0061] Even better, all the power systems in this solution are connected to a PLC controller, which can then be uniformly adjusted and controlled.

[0062] The specific working process of this invention is as follows:

[0063] During operation, the load plate 11 is placed on two transmission belts through the conveyor structure and in conjunction with the lifting and clamping mechanism, and transported to the position of the lifting and clamping mechanism to achieve assembly line production.

[0064] The clamping, lifting, rotation adjustment, milling and drilling of the load plate 11 are all set in one station, which avoids the trouble of the load plate 11 needing to be processed in different stations in the past, and improves production efficiency in conjunction with the transmission of the conveyor belt 6.

[0065] A lateral moving mechanism is provided to adjust the drilling machine and industrial camera 142 laterally, enabling multi-functional processing on the same moving station, thereby improving efficiency and reducing costs. In this embodiment 1, the milling equipment is located close to the drilling machine, but is not fixedly connected to the lateral moving mechanism.

[0066] During milling, the operator inputs the machining program into the control system. The system first starts the milling spindle box, which drives the milling cutter head to rotate at high speed. The worktable moves according to the preset trajectory, so that the milling cutter head can perform milling of the toothed ring contour on the outer edge of the load plate 11 to obtain the milled toothed ring 111. After the milling process is completed, the milling spindle box returns to the safe position.

[0067] The system is equipped with a first limiting component and a second limiting component, which together constitute a flipping component for rotating the load plate 11 by 180°. Under the action of the first arc rod 10 and the second arc rod, they are locked on the outside of the load plate 11 and limit the load plate 11. They are arranged in a centrally symmetrical manner around the center, making it convenient and quick to rotate.

[0068] After the load plate 11 rotates 180°, the drill bit starts and rotates to feed, drilling holes 112 on the preset holes on the surface of the load plate 11. The entire process is automatically controlled by the CNC system, and the workpiece completes all operations of outer edge milling and end face drilling 112 in one clamping.

[0069] The lower rotary cylinder is set up so that when the flipping component is not working, the lower rotary cylinder can be used to rotate the first limiting component and the second limiting component outward at the same time by a certain angle to avoid interfering with the milling and drilling process 112. The overall layout is reasonable.

[0070] This solution includes an industrial camera 142, which, in conjunction with a host computer and 3D modeling software, can quickly obtain the angle α between the center point of the hole to be drilled 112 and the center point of the drill bit and the line connecting them to the center of the load plate 11. Based on this angle α, the rotation angle of the load plate 11 can be obtained very quickly, with an accuracy to two to three decimal places. This approach of using a host computer and 3D modeling software to obtain the rotation angle greatly reduces the processing cost of the hole 112 and improves the processing accuracy, making it convenient for those skilled in the art to operate and implement.

[0071] It should be noted that in this embodiment 1, the milling equipment is a portable milling machine, such as a portable surface milling machine or a portable three-axis milling machine (model Normaco PML3). The portable three-axis milling machine has a built-in hoisting design, which can be easily hoisted to different work positions by lifting equipment. Its fixing method is also flexible. In addition to bolts, it can also be attached to the steel workpiece with a strong magnetic base or fixed with a vacuum pad, which is very stable.

[0072] Portable magnetic drills, such as the Unibo E100ST-10 or Shengshan AE-22S from the UK, can be used. These machines feature a built-in lifting and handling design, are lightweight (typically 25-30 kg), and are equipped with handles or lifting rings, allowing for easy lifting by one person or movement with crane assistance. They are powerful, capable of both drilling and tapping. Portable surface milling machines, portable three-axis milling machines, and portable magnetic drills are all existing technologies and will not be detailed here. Due to the large number of structural components, for the sake of simplicity, the milling equipment and drilling machines are not labeled in the accompanying drawings of this manual. However, their locations and connection methods are described in writing, and those skilled in the art can perform installation and commissioning; therefore, they will not be detailed here.

[0073] Example 2

[0074] See Figure 10 Based on Embodiment 1, Embodiment 2 is presented here. In Embodiment 2, two lateral movement mechanisms are provided, which are respectively slidably mounted in the track groove plate 31 via power wheels. The milling equipment and drilling machine are respectively positioned on these two lateral movement mechanisms to increase the convenience of installation and disassembly. Those skilled in the art can select and install them according to the actual situation, and will not be described in detail here.

[0075] Example 3

[0076] A method for integrated milling and drilling of heavy-duty discs, specifically including the following steps:

[0077] Step S1: Using the front-end robotic arm, the load plate 11 is placed between two parallel conveyor belts 6. Under the action of the lower drive motor 17, it is transported forward and stops above the lifting and clamping mechanism.

[0078] Step S2: The lifting cylinder 151 operates, driving the three-jaw chuck 15 to rise. The three-jaw chuck 15 extends into the load plate 11 and supports the load plate 11.

[0079] Step S3: First, adjust the milling equipment into position. Under the action of the servo motor, drive the load plate 11 to rotate slowly. At the same time, start the milling process.

[0080] Step S4: After the milling process is completed, the first lower rotary cylinder 2 and the second lower rotary cylinder are used to drive the first clamping member and the second clamping member to rotate and fit against the outside of the load plate 11. At this time, the lifting cylinder 151 drives the three-jaw chuck 15 to descend and disengage from the load plate 11.

[0081] Step S5: Under the action of the upper rotating cylinder 4, the load plate 11 is rotated 180°, and the lifting cylinder 151 drives the three-jaw chuck 15 to rise again to support the load plate 11. At this time, the drilling machine is adjusted to a suitable position, and the two clamping components are disengaged from the load plate 11 respectively.

[0082] Step S6: The industrial camera 142 takes a picture of the top of the load plate 11 and transmits it to the host computer. It is then imported into the 3D modeling software on the host computer. Using the analysis and measurement angle function in the software, the angle α between the center point of the hole to be drilled 112 and the center point of the drill bit and the center of the load plate 11 is measured. The servo motor is driven by the controller to rotate the load plate 11 by the angle α so that the center of the hole to be drilled 112 and the center of the drill bit are aligned vertically. The drilling machine is then started to begin drilling 112.

[0083] Step S7: After the first hole 112 is completed, the controller controls the servo motor to drive the load plate 11 to rotate by an included angle β, and performs the subsequent drilling process for multiple holes 112 one by one.

[0084] Step S8: After the entire rotation is completed, the lifting clamping mechanism disengages from the load plate 11, the load plate 11 falls between the two conveyor belts 6 and is transported away until the end robot removes it; repeat the above process.

[0085] The technical features of this invention not described can be implemented by or using existing technology, and will not be repeated here. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A heavy-duty integrated milling and drilling machining device, comprising a base plate (1), characterized in that, The base plate (1) is provided with a conveying structure for the assembly line transmission of multiple load trays (11). A lifting clamping mechanism is provided on the conveying structure and below the load trays (11). A milling machine and a drilling machine are provided above the lifting clamping mechanism. The milling machine and the drilling machine are both fixedly mounted on the transverse moving mechanism. Limiting component one and limiting component two are respectively provided on both sides of the lifting clamping mechanism. The two components constitute a flipping component for the load trays (11) to rotate 180°.

2. The integrated milling and drilling machining device for heavy loads according to claim 1, characterized in that, The limiting component includes a first lower rotating cylinder (2), a first positioning plate fixedly connected to the free end above the first lower rotating cylinder (2), and an upper rotating cylinder (4) horizontally fixed on the first positioning plate. The upper rotating cylinder (4) is connected to the first clamping member.

3. The heavy-duty integrated milling and drilling machining device according to claim 2, characterized in that, The second limiting component includes a second lower rotating cylinder, a second positioning plate fixedly connected to the upper free end of the second lower rotating cylinder, and a rotating column whose one end is horizontally rotatably connected to the second positioning plate via a rubber ring. The rotating column is connected to the second clamping member.

4. The integrated milling and drilling machine according to claim 3, characterized in that, The first clamping member includes a first fixed frame (8), a first clamping cylinder (9) horizontally fixed on the first fixed frame (8), and a first arc rod (10) with one end connected to the free end of the first clamping cylinder (9). There are two first arc rods (10) arranged vertically. The second clamping member includes a second fixed frame, a second clamping cylinder horizontally fixed on the second fixed frame, and a second arc rod with one end connected to the free end of the second clamping cylinder. There are two second arc rods, which are arranged vertically and vertically respectively. The first arc rod (10) and the second arc rod are centrally symmetrical about the center of the load plate (11).

5. The integrated milling and drilling machine for heavy loads according to claim 1, characterized in that, The conveying structure consists of two parallel conveyor belts (6), a drive shaft (16) passing through the end of the conveyor belts (6), a lower drive motor (17) connected to the drive shaft (16), and a support rod (5) horizontally arranged inside the conveyor belts (6). The two ends of the support rod (5) are fixedly connected to the support, and the drive shaft (16) is rotatably arranged on the support. There is a gap between the two conveyor belts (6), and the two sides of the load plate (11) are respectively placed on the two conveyor belts (6).

6. The heavy-duty integrated milling and drilling machining device according to claim 1, characterized in that, The lifting clamping mechanism includes a vertically arranged lifting cylinder (151), a three-jaw chuck (15) coaxially fixed at the free end above the lifting cylinder (151), and a power column (152) coaxially fixed on the base below the lifting cylinder (151). The power column (152) is rotatably connected to the positioning seat and is driven by a servo motor.

7. The heavy-duty integrated milling and drilling machining device according to claim 6, characterized in that, The lateral movement mechanism includes a horizontally arranged rack (7), a sliding frame (12) slidably arranged on the rack (7), a gear (14) meshing with the side of the rack (7), and an upper drive motor (13) coaxially connected with the gear (14). A left plate (141) and a right plate (143) are fixed on both sides of the bottom end of the sliding frame (12). A milling machine and a drilling machine are fixed on the left plate (141) and the right plate (143) respectively.

8. The heavy-duty integrated milling and drilling machining device according to claim 7, characterized in that, An industrial camera (142) is fixed at the bottom of the mobile frame (12). The industrial camera (142) is located between the left plate (141) and the right plate (143). The industrial camera (142) is connected to the host computer, which is equipped with three-dimensional modeling software. The host computer is connected to the servo motor through a controller.

9. A method for integrated milling and drilling of a load-bearing disc (11), comprising an integrated milling and drilling apparatus for a load-bearing disc as described in any one of claims 1-9, characterized in that, Specifically, the steps include the following: Step S1: Using the front-end robotic arm, the load plate (11) is placed between two parallel conveyor belts (6). Under the action of the lower drive motor (17), it is transported forward and stops above the lifting clamping mechanism. Step S2: The lifting cylinder (151) works, driving the three-jaw chuck (15) to rise. The three-jaw chuck (15) extends into the load plate (11) and supports the load plate (11). Step S3: First, adjust the milling equipment into position, and drive the load plate (11) to rotate slowly under the action of the servo motor. At the same time, start the milling process. Step S4: After the milling process is completed, the first lower rotary cylinder (2) and the second lower rotary cylinder are used to drive the first clamping member and the second clamping member to rotate and fit against the outside of the load plate (11). At this time, the lifting cylinder (151) drives the three-jaw chuck (15) to descend and disengage from the load plate (11). Step S5: Under the action of the upper rotating cylinder (4), the load plate (11) is rotated 180°, and the lifting cylinder (151) drives the three-jaw chuck (15) to rise again to support the load plate (11). At this time, the drilling machine is adjusted to a suitable position, and the two clamping components are disengaged from the load plate (11). Step S6: The industrial camera (142) takes a picture of the top of the load plate (11) and transmits it to the host computer. It is then imported into the 3D modeling software in the host computer. Using the analysis and measurement angle function in the software, the angle α between the center point of the hole to be drilled (112) and the center point of the drill bit and the center of the load plate (11) is measured. The servo motor is driven by the controller to rotate the load plate (11) by the angle α so that the center of the hole to be drilled (112) and the center of the drill bit are aligned vertically. The drilling machine is then started to begin drilling (112). Step S7: After the first hole (112) is completed, the controller controls the servo motor to drive the load plate (11) to rotate by an angle β, and performs the subsequent drilling (112) process one by one; Step S8: After the entire hole is turned, the lifting clamping mechanism disengages from the load plate (11), the load plate (11) falls between the two conveyor belts (6) and is transported away until the end robot takes it off; repeat the above process.

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