A boom processing device and processing method

Abstract

This invention discloses a boom processing device and method. The boom processing device includes a boring and milling CNC machine tool. A multi-hole positioning clamping group is provided on the worktable of the boring and milling CNC machine tool. The multi-hole positioning clamping group includes several multi-hole positioning clamping devices arranged along the length direction of a single boom. Each multi-hole positioning clamping device includes a base, on which a multi-hole positioning device and at least one rotary hydraulic clamping device are mounted. A single-hole positioning clamping group is also provided on the worktable of the boring and milling CNC machine tool, opposite to the multi-hole positioning clamping group. The single-hole positioning clamping group includes several single-hole positioning clamping devices arranged along the length direction of a single boom. Each single-hole positioning clamping device includes a single-hole positioning device, a V-type hydraulic clamping device, and at least one rotary hydraulic clamping device. This invention results in shorter part alignment time and higher efficiency; each processing area is effectively clamped, processing vibration is reduced, and processing accuracy and efficiency are improved.

Description

Technical Field

[0001] This invention relates to a boom processing device and processing method, belonging to the field of mechanical processing. Background Technology

[0002] The connecting hinge point holes of the truss boom intermediate section are generally machined using a CNC double-sided floor-type boring and milling machining center. This machining method has the following problems: ① The truss boom intermediate section needs to be aligned and clamped in the width and height directions, which takes a long time; ② When machining the top 4 hinge point holes, there is no clamping and fixing, and the vibration during machining is limited only by the rigidity of the parts, resulting in low machining efficiency; ③ Due to the limitation of the width dimension of the equipment, truss boom intermediate sections that exceed the width range of the equipment cannot be machined; ④ The truss boom intermediate section is large in size and occupies a lot of buffer space. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide a boom processing device that improves processing efficiency; another purpose of this invention is to provide a boom processing method with short part alignment time and high processing efficiency.

[0004] Technical solution: The present invention provides a boom processing device, including a boring and milling CNC machine tool, wherein the boring and milling CNC machine tool includes a worktable and four spindles, the four spindles being used to simultaneously process the top hinge point holes of a single boom;

[0005] The worktable of the boring and milling CNC machine tool is equipped with a multi-hole positioning and clamping assembly, which includes several multi-hole positioning and clamping devices arranged along the length of the single-segment arm. Each multi-hole positioning and clamping device includes a base, on which a multi-hole positioning device and at least one rotary hydraulic clamping device are mounted. The multi-hole positioning device includes a multi-hole positioning platform, on which a multi-hole positioning seat is provided. Several positioning holes are provided on the multi-hole positioning seat. The positioning holes are arranged along the width of the single-segment arm. The rotary hydraulic clamping device is slidably mounted on the base of the multi-hole positioning and clamping device and can slide along the width of the single-segment arm.

[0006] The worktable of the boring and milling CNC machine tool is also equipped with a single-hole positioning clamping group, which is located opposite the multi-hole positioning clamping group. The single-hole positioning clamping group includes several single-hole positioning clamping devices arranged along the length of the single-segment arm. Each single-hole positioning clamping device includes a single-hole positioning device, a V-type hydraulic clamping device, and at least one rotary hydraulic clamping device.

[0007] Furthermore, the single-hole positioning device includes a single-hole positioning platform, a single-hole positioning seat located on top of the single-hole positioning platform, and a positioning hole opened on the single-hole positioning seat; the V-shaped hydraulic clamping device includes a hydraulic V-groove, which is used to place the single-segment boom; the positioning hole of the single-hole positioning device is located at the middle position of the hydraulic V-groove.

[0008] Furthermore, the V-shaped hydraulic clamping device includes a first adjustable clamping base, a first hydraulic V-shaped clamp disposed on the first adjustable clamping base, a second adjustable clamping base, and a second hydraulic V-shaped clamp disposed on the second adjustable clamping base; the first adjustable clamping base is disposed on one side of the positioning hole on the single-hole positioning device, and the second adjustable clamping base is disposed on the other side; the first adjustable clamping base and the second adjustable clamping base can slide towards each other, and the two together form a hydraulic V-shaped groove for placing a single-panel boom.

[0009] Furthermore, it also includes at least one boom support assembly, which includes a height-adjustable support fixedly mounted on the work platform and a height-adjustable support slidably mounted on the work platform; the height-adjustable support slidably mounted on the work platform can slide along the width direction of a single boom.

[0010] Furthermore, the rotary hydraulic clamping device includes a rotary clamping platform, a guide shaft mounted on the rotary clamping platform, a rotary mechanism mounted on the guide shaft, a rotary pressure plate connected to the rotary mechanism and mounted on the guide shaft, an adjustable pressure head connected to the rotary pressure plate, and a lifting mechanism installed between the rotary mechanism and the rotary clamping platform for controlling the lifting and lowering of the rotary pressure plate.

[0011] Furthermore, the boring and milling CNC machine tool includes two opposing masts, each mast having two sets of slides and two sets of boring and milling heads.

[0012] Furthermore, the multi-hole positioning clamping assembly includes four multi-hole positioning clamping devices arranged along the length of the single-segment boom. The multi-hole positioning clamping devices located at the beginning and end of the multi-hole positioning clamping assembly consist of a multi-hole positioning device and a rotary hydraulic clamping device arranged adjacent to the multi-hole positioning device.

[0013] Furthermore, the multi-hole positioning clamping device located in the middle of the multi-hole positioning clamping group consists of two rotary hydraulic clamping devices and a multi-hole positioning device located between the two rotary hydraulic clamping devices.

[0014] Furthermore, the single-hole positioning clamping assembly includes four single-hole positioning clamping devices arranged along the length of the single-segment boom. The single-hole positioning clamping devices located at the beginning and end of the single-hole positioning clamping assembly consist of a single-hole positioning device and a rotary hydraulic clamping device arranged adjacent to the single-hole positioning device. The single-hole positioning clamping device located in the middle of the single-hole positioning clamping assembly consists of two rotary hydraulic clamping devices and a single-hole positioning device located between the two rotary hydraulic clamping devices.

[0015] On the other hand, the present invention provides a method for processing a boom using the above-described device, comprising the following steps:

[0016] (1) According to the distribution of positioning holes in the multi-hole positioning clamping group and the single-hole positioning clamping group, make several pre-made holes on the main chord tube of the single-segment boom for cooperating with the guide positioning pin; according to the hole diameter and hole spacing of the four hinge point holes to be drilled on the single-segment boom, select the guide positioning pin and insert it into the corresponding positioning hole.

[0017] (2) Align the pre-drilled holes on the single-panel boom with the guide positioning pins, lower the single-panel boom, and place the single-panel boom on the multi-hole positioning clamping group and the single-hole positioning clamping group through the guide positioning pins.

[0018] (3) The V-type hydraulic clamping device and the rotary hydraulic clamping device are respectively supplied with oil. The V-type hydraulic clamping device clamps one main chord tube in the single-segment boom, and the rotary hydraulic clamping device clamps and presses the other main chord tube in the single-segment boom.

[0019] (4) Use a boring and milling CNC machine tool to simultaneously process the four hinge point holes of a single-fan arm;

[0020] (5) After processing is completed, the V-type hydraulic clamping device and the rotary hydraulic pressing device are reset, and the single-segment boom is taken out.

[0021] The original production process was as follows: boom assembly – boom welding and shaping – boom machining. The dimensional accuracy of the hole diameter and height direction hole spacing was achieved through the final machining process. The dimensional accuracy requirement in the width direction was lower, and it was achieved through assembly, welding and shaping.

[0022] The concept of this invention is as follows: Strict control of the dimensional accuracy of the bore diameter and height spacing (converted to the dimensional accuracy of the bore spacing in the width direction of a single boom) is achieved through the machining process of the single boom. Width direction dimensional control is achieved through overall splicing, overall welding, and shaping. Through theoretical analysis and experimental verification, the production process is adjusted as follows: single boom machining – overall boom splicing – overall boom welding and shaping.

[0023] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) Compared with the CNC double-sided floor boring and milling machining center, due to the addition of the fixture, the part alignment time is short and the efficiency is high; each processing area is effectively clamped, the processing vibration is small, and the processing accuracy and efficiency are improved; the use of hydraulic automatic fixtures saves manpower and reduces the intensity of manual labor; the use of four spindles for simultaneous processing results in high processing efficiency.

[0024] (2) Since the boom is assembled and welded as a whole after the single boom is machined, the width of the boom is no longer limited by the machining range of the machine tool in the width direction. Therefore, when producing wide booms, it is not necessary to purchase a CNC double-sided floor-type boring and milling machining center with a wide machining range.

[0025] (3) Compared with the intermediate section of the truss boom, when a single boom is stacked, it occupies a smaller buffer or storage area, which can save space. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the single-hole positioning and clamping device according to an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the multi-hole positioning and clamping device according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the boring and milling CNC machine tool according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram showing the distribution structure of the single-hole positioning clamping device and the multi-hole positioning clamping device according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the guide positioning pin structure according to an embodiment of the present invention.

[0031] Figure 6 This is a schematic diagram of the intermediate boom section structure.

[0032] Figure 7 This is a schematic diagram of a single-segment boom structure.

[0033] Figure 8 This is a schematic diagram of the processing process of the boom processing device according to an embodiment of the present invention.

[0034] Reference numerals: a. Single-hole positioning and clamping device; b. Multi-hole positioning and clamping device; 1. Single-hole positioning device; 12. Single-hole positioning platform; 11. Single-hole positioning seat; 13. First positioning hole; 2. Multi-hole positioning device; 21. Multi-hole positioning platform; 22. Multi-hole positioning seat; 23. Second positioning hole; 3. V-shaped hydraulic clamping device; 31. First adjustable clamping base; 32. First hydraulic V-shaped clamp; 33. Second adjustable clamping base; 34. Second hydraulic V-shaped clamp; 35. Hydraulic V-groove; 4. Rotary hydraulic clamping device ; 41. Lifting mechanism; 42. Guide shaft; 43. Rotary clamping platform; 44. Rotary mechanism; 45. Rotary pressure plate; 46. Adjustable pressure head; 5. Boring and milling CNC machine tool; 51. Worktable; 52. Spindle; 53. Gantry; 6. Boom support assembly; 61. First support; 62. Second support; 7. Single-leaf boom; 71. First main chord tube; 72. Second main chord tube; 73. Web tube; 74. Hinge hole; 8. Guide positioning pin; 81. Handle; 82. Tapered guide; 83. Limiting cylinder; 84. Positioning cylinder. Detailed Implementation

[0035] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0036] This invention provides a boom processing device for processing four hinge point holes at the top of a single-segment boom. The boom processing device includes a boring and milling CNC machine tool, a multi-hole positioning clamping group and a single-hole positioning clamping group arranged on the boring and milling CNC machine tool; wherein, the multi-hole positioning clamping group is used to clamp one main chord tube in the single-segment boom, and the single-hole positioning clamping group is used to clamp another main chord tube in the single-segment boom.

[0037] like Figure 1 As shown, in one embodiment, the single-hole positioning clamping group includes several single-hole positioning clamping devices a arranged along the length direction of the single-segment arm. The single-hole positioning clamping device a includes a single-hole positioning device 1, a V-shaped hydraulic clamping device 3, and at least one rotary hydraulic clamping device 4.

[0038] The single-hole positioning device 1 includes a single-hole positioning platform 12, a single-hole positioning seat 11 disposed on the top of the single-hole positioning platform 12, and a first positioning hole 13 opened on the single-hole positioning seat.

[0039] The V-shaped hydraulic clamping device 3 includes a hydraulic V-groove 35 for placing a single-segment boom; the first positioning hole 13 of the single-hole positioning device is located in the middle of the hydraulic V-groove 35. The V-shaped hydraulic clamping device 3 includes a first adjustable clamping base 31, a first hydraulic V-clamp 32 disposed on the first adjustable clamping base 31, a second adjustable clamping base 33, and a second hydraulic V-clamp 34 disposed on the second adjustable clamping base 33; the first adjustable clamping base 31 is disposed on one side of the first positioning hole 13 on the single-hole positioning device, and the second adjustable clamping base 33 is disposed on the other side. The first adjustable clamping base 31 and the second adjustable clamping base 33 can slide towards each other, and the two together form a hydraulic V-groove 35 for placing a single-segment boom. The first hydraulic V-clamp 32 is connected to the first horizontal pressing cylinder, and the second hydraulic V-clamp 34 is connected to the second horizontal pressing cylinder. When the start button is pressed, the hydraulic cylinders start to supply oil, and the first and second horizontal pressing cylinders respectively push the first hydraulic V-clamp 32 and the second hydraulic V-clamp 34 to move towards each other, and the hydraulic V-groove 35 tightens.

[0040] The rotary hydraulic clamping device 4 is slidably mounted on the base of the multi-hole positioning clamping device. The rotary hydraulic clamping device 4 can slide along the width direction of the single-segment boom. The rotary hydraulic clamping device 4 includes a rotary clamping platform 43, a guide shaft 42 mounted on the rotary clamping platform 43, a rotary mechanism 44 mounted on the guide shaft 42, a rotary pressure plate 45 connected to the rotary mechanism 44 and mounted on the guide shaft 42, an adjustable pressure head 46 connected to the rotary pressure plate 45, and a lifting mechanism 41 installed between the rotary mechanism 44 and the rotary clamping platform 43 to control the lifting and lowering of the rotary pressure plate 45. The position of the adjustable pressure head 46 can be adjusted according to the position of the weld seam at the end of the main chord tube. The rotary mechanism 44 is a rotary clamping cylinder, and the lifting mechanism 41 is a lifting cylinder. Pressing the start button starts the hydraulic cylinder supplying oil, and the rotary mechanism 44 rotates the rotary pressure plate 45 until it is directly above the main chord tube of the single-segment boom, after which it stops rotating. Pressing the start button again starts the hydraulic cylinder supplying oil, and the lifting mechanism drives the rotary pressure plate 45 to press down.

[0041] like Figure 2 As shown, the multi-hole positioning clamping assembly includes several multi-hole positioning clamping devices b arranged along the length direction of the single-segment arm; the multi-hole positioning clamping device b includes a base, a multi-hole positioning device 2 and at least one rotary hydraulic clamping device 4 on the base.

[0042] The multi-hole positioning device 2 includes a multi-hole positioning platform 21, a multi-hole positioning seat 22 is provided on the top of the multi-hole positioning platform 21, and a plurality of second positioning holes 23 are provided on the multi-hole positioning seat 22; the plurality of second positioning holes 23 are arranged along the width direction of the single-segment arm.

[0043] The working process of the single-hole positioning clamping device a is as follows: One main chord tube in the single-segment boom is placed above each single-hole positioning clamping device a. A pre-drilled hole is provided on the main chord tube, and the position of the pre-drilled hole corresponds to the position of the first positioning hole 13 in the single-hole positioning device 1. Guide positioning pins are used to align the pre-drilled hole on the main chord tube with the first positioning hole 13 in the single-hole positioning device 1. At this time, the main chord tube is placed in the hydraulic V-groove 35. Oil is introduced into the hydraulic V-groove clamping device 3, and the hydraulic V-groove 35 tightens. The main chord tube placed in the hydraulic V-groove 35 is also located below the rotary hydraulic clamping device 4. Oil is introduced into the rotary hydraulic clamping device 4, and the rotating pressure plate 45 clamps the main chord tube. After one main chord tube in the single-segment boom is fixed on the single-hole positioning clamping device, each guide positioning pin is pulled out, completing the positioning and clamping of one main chord tube in the single-segment boom.

[0044] The working process of the multi-hole positioning clamping device b is as follows: One main chord tube of the single-segment boom is placed above each single-hole positioning clamping device a, and another main chord tube is placed above each multi-hole positioning clamping device b. The multi-hole positioning clamping device b has several positioning holes in the width direction of the single-segment boom, and the corresponding positioning hole can be selected according to the width of the single-segment boom; a pre-drilled hole is opened on the main chord tube, and the position of the pre-drilled hole corresponds to the position of the second positioning hole 23 in the multi-hole positioning device 2; using guide positioning pins, the pre-drilled hole on the main chord tube is aligned with the second positioning hole 23 in the multi-hole positioning device 2, and the sliding and rotating hydraulic clamping device 4 is moved close to the second positioning hole 23 in use; the main chord tube in the single-segment boom passes under each rotating hydraulic clamping device 4, oil is introduced into the rotating hydraulic clamping device 4, and the rotating pressure plate 45 clamps the main chord tube. After one main chord tube in the single-segment boom is fixed on the multi-hole positioning clamping device, each guide positioning pin is pulled out, completing the positioning and clamping of one main chord tube in the single-segment boom.

[0045] In one embodiment, the multi-hole positioning clamping group includes four multi-hole positioning clamping devices arranged along the length of the single-segment boom. The multi-hole positioning clamping devices located at the beginning and end of the multi-hole positioning clamping group consist of a multi-hole positioning device and a rotary hydraulic clamping device arranged adjacent to the multi-hole positioning device. The multi-hole positioning clamping device located in the middle of the multi-hole positioning clamping group consists of two rotary hydraulic clamping devices and a multi-hole positioning device located between the two rotary hydraulic clamping devices.

[0046] In one embodiment, the single-hole positioning clamping group includes four single-hole positioning clamping devices arranged along the length of the single-segment boom. The single-hole positioning clamping devices located at the beginning and end of the single-hole positioning clamping group consist of a single-hole positioning device and a rotary hydraulic clamping device arranged adjacent to the single-hole positioning device. The single-hole positioning clamping device located in the middle of the single-hole positioning clamping group consists of two rotary hydraulic clamping devices and a single-hole positioning device located between the two rotary hydraulic clamping devices.

[0047] like Figure 3 As shown, this embodiment of the invention provides a boring and milling CNC machine tool 5, which differs from existing CNC double-sided floor-type boring and milling machine tools. This embodiment's boring and milling CNC machine tool has two common-rail gantry frames arranged face-to-face. Each gantry is equipped with two sets of sliding saddles and square sliding ram type boring and milling head assemblies, enabling simultaneous machining of two reamer holes at one end. Similarly, the other end can be machined in the same way. The specific structure of the sliding saddle and square sliding ram type boring and milling head assembly is the same as in the prior art. Specifically, the boring and milling CNC machine tool includes a worktable 51, four spindles 52, and two opposing gantry frames 53. Each gantry is equipped with two sets of sliding saddles 54 and two sets of boring and milling heads 55. The four spindles are used to simultaneously machine the top reamer holes of a single-segment arm.

[0048] like Figure 4As shown in the figure, in one embodiment, a boom processing device is provided, including at least one boom support group 6. The boom support group 6 includes a height-adjustable first support 61 fixedly mounted on a work platform and a height-adjustable second support 62 slidably mounted on the work platform; the height-adjustable support slidably mounted on the work platform can slide along the width direction of a single boom.

[0049] In one embodiment, the length dimension of a single boom can be selected as 3000mm, 6000mm, 9000mm, or 12000mm, and the width dimension is 1400mm to 3200mm, spaced 100mm apart. The position dimensions of the four hinge point holes follow a clear pattern. Positioning and clamping are achieved using a multi-hole positioning clamping group b and a single-hole positioning clamping group a, satisfying the requirement for varying hole spacing of 1400mm to 3200mm in the width direction of the single boom. Four sets of single-hole positioning clamping devices are arranged parallel along the X-axis on one side of the working platform, with center distances of 3000mm, 6000mm, and 3000mm respectively. Four sets of multi-hole positioning clamping devices are arranged parallel along the X-axis on the other side of the working platform, with center distances of 3000mm, 6000mm, and 3000mm respectively, thus satisfying the requirement for varying hole spacing of 3000mm, 6000mm, 9000mm, and 12000mm in the length direction of the single boom. If the width of a single boom varies, adjusting the position of the single boom on the multi-hole positioning clamping assembly b will satisfy the requirement of varying single boom widths from 1400mm to 3200mm.

[0050] In one embodiment, to achieve simultaneous processing of both ends of 6000mm, 9000mm, and 12000mm single-segment booms and simultaneous processing of two 3000mm single-segment booms, and to maximize the processing efficiency of the machine tool, rotary hydraulic clamping devices are provided on one or both sides of the single-hole positioning seat and the multi-hole positioning seat, respectively; to reduce vibration during cutting, V-shaped hydraulic clamping devices are provided on one or both sides of the single-hole positioning seat, respectively.

[0051] like Figure 5As shown, a guide positioning pin is used to guide the single-segment boom. The guide positioning pin 8 consists of four parts: from top to bottom, an integrally formed handle 81, a tapered guide 82, a limiting cylinder 83, and a positioning cylinder 84. The guide positioning pin is inserted into the positioning hole of the positioning seat, and the positioning cylinder has a small clearance fit with the positioning hole of the positioning seat to accurately determine the position of the guide positioning pin. When the single-segment boom is clamped, the limiting cylinder fits with the pre-drilled hole of the single-segment boom, which can limit and determine the position of the pre-drilled hole and confirm that the machining allowance of the pre-drilled hole is sufficient. Considering weight reduction, the height of the limiting cylinder is flush with the center line of the joint, and the diameter of the limiting cylinder is theoretically calculated based on the welding deformation of the single-segment boom. When the single-segment boom is clamped, the pre-drilled hole of the single-segment boom slides down along the tapered guide section, relying on its own weight, towards the limiting cylinder area. Considering weight reduction, the height of the tapered guide section is designed to be the distance from the upper end of the limiting cylinder to the upper end of the joint. The handle is used to guide the insertion and removal of the positioning pin. Considering weight reduction and ease of use, the handle size is approximately φ30×100, with knurled outer circle.

[0052] A truss boom is a lifting boom that uses a truss structure. The intermediate boom section is the boom with a uniform cross-section in the middle part of the truss boom. The intermediate boom sections are connected via pins through four hinge point holes at the ends, such as... Figure 6 As shown. A single-segment boom consists of structural components on both sides of the width of the intermediate boom section, such as... Figure 7 As shown, the single-segment boom 7 includes a first main chord tube 71, a second main chord tube 72, several web tubes 73 for connecting the main chord tubes, and a hinge point hole 74 located at the top of the main chord tubes; the first main chord tube 71 and the second main chord tube 72 are arranged in parallel. Before processing, the single-segment boom does not have hinge point holes; after boring using a CNC boring and milling machine, four hinge point holes are obtained. Several pre-drilled holes are provided on the main chord tubes of the single-segment boom, which are used to mate with the positioning holes of the single-hole positioning device and the multi-hole positioning device.

[0053] like Figure 8 As shown, in one embodiment, a method for processing a boom using a boom processing device is provided, comprising the following steps:

[0054] (1) Based on the distribution of positioning holes in the multi-hole positioning clamping group b and the single-hole positioning clamping group a, several pre-made holes for cooperating with guide positioning pins are drilled on the main chord tube of the single-span boom 7; based on the hole diameter and hole spacing of the four hinge point holes to be drilled on the single-span boom 7, guide positioning pins are selected and inserted into the corresponding positioning holes.

[0055] (2) Smoothly hoist the single-panel boom, align the pre-drilled holes on the single-panel boom with the guide positioning pins, lower the single-panel boom, and place the single-panel boom on the multi-hole positioning clamping group b and the single-hole positioning clamping group a through the guide positioning pins.

[0056] (3) The V-type hydraulic clamping device and the rotary hydraulic clamping device are respectively supplied with oil. The V-type hydraulic clamping device clamps the first main chord tube 71 in the single-fan boom, and the rotary hydraulic clamping device clamps and presses the second main chord tube 72 in the single-fan boom.

[0057] (4) The four hinge holes 74 of the single-fan arm are machined simultaneously using a boring and milling CNC machine tool 5;

[0058] (5) After processing is completed, the V-type hydraulic clamping device and the rotary hydraulic pressing device are reset, and the single-segment boom is taken out.

Claims

1. A boom processing device, characterized in that, The machine tool includes a boring and milling CNC machine tool, which includes a worktable and four spindles, the four spindles being used to simultaneously machine the top hinge point holes of a single-segment arm; The worktable of the boring and milling CNC machine tool is equipped with a multi-hole positioning and clamping assembly, which includes several multi-hole positioning and clamping devices arranged along the length of the single-segment arm. Each multi-hole positioning and clamping device includes a base, on which a multi-hole positioning device and at least one rotary hydraulic clamping device are mounted. The multi-hole positioning device includes a multi-hole positioning platform, on which a multi-hole positioning seat is provided. Several positioning holes are provided on the multi-hole positioning seat. The positioning holes are arranged along the width of the single-segment arm. The rotary hydraulic clamping device is slidably mounted on the base of the multi-hole positioning and clamping device and can slide along the width of the single-segment arm. The worktable of the boring and milling CNC machine tool is also equipped with a single-hole positioning clamping group. The single-hole positioning clamping group is located opposite the multi-hole positioning clamping group. The single-hole positioning clamping group includes several single-hole positioning clamping devices arranged along the length of the single-segment arm. The single-hole positioning clamping device includes a single-hole positioning device, a V-type hydraulic clamping device, and at least one rotary hydraulic clamping device. The single-hole positioning device includes a single-hole positioning platform, a single-hole positioning seat on top of the single-hole positioning platform, and a positioning hole on the single-hole positioning seat; the V-shaped hydraulic clamping device includes a hydraulic V-groove for placing a single-segment boom; the positioning hole of the single-hole positioning device is located in the middle of the hydraulic V-groove; the V-shaped hydraulic clamping device includes a first adjustable clamping base, a first hydraulic V-clamp on the first adjustable clamping base, a second adjustable clamping base, and a second hydraulic V-clamp on the second adjustable clamping base; the first adjustable clamping base is provided with... On one side of the positioning hole on the single-hole positioning device, the second adjustable clamping base is located on the other side. The first adjustable clamping base and the second adjustable clamping base can slide towards each other, forming a hydraulic V-groove for placing a single-panel boom. The rotary hydraulic clamping device includes a rotary clamping platform, guide shafts respectively installed on the rotary clamping platform, a rotary mechanism installed on the guide shaft, a rotary pressure plate connected to the rotary mechanism and installed on the guide shaft, an adjustable pressure head connected to the rotary pressure plate, and a lifting mechanism installed between the rotary mechanism and the rotary clamping platform for controlling the lifting and lowering of the rotary pressure plate.

2. The boom processing device according to claim 1, characterized in that, It also includes at least one boom support assembly, which includes a height-adjustable support fixedly mounted on the work platform and a height-adjustable support slidably mounted on the work platform; the height-adjustable support slidably mounted on the work platform can slide along the width direction of a single boom.

3. The boom processing device according to claim 1, characterized in that, The boring and milling CNC machine tool includes two opposing masts, each mast having two sets of slides and two sets of boring and milling heads.

4. The boom processing device according to claim 1, characterized in that, The multi-hole positioning clamping assembly includes four multi-hole positioning clamping devices arranged along the length of the single-segment boom. The multi-hole positioning clamping devices located at the beginning and end of the multi-hole positioning clamping assembly consist of a multi-hole positioning device and a rotary hydraulic clamping device arranged adjacent to the multi-hole positioning device.

5. The boom processing device according to claim 4, characterized in that, The multi-hole positioning clamping device located in the middle of the multi-hole positioning clamping group consists of two rotary hydraulic clamping devices and a multi-hole positioning device located between the two rotary hydraulic clamping devices.

6. The boom processing device according to claim 1, characterized in that, The single-hole positioning clamping assembly includes four single-hole positioning clamping devices arranged along the length of the single-segment boom. The single-hole positioning clamping devices located at the beginning and end of the single-hole positioning clamping assembly consist of a single-hole positioning device and a rotary hydraulic clamping device arranged adjacent to the single-hole positioning device. The single-hole positioning clamping device located in the middle of the single-hole positioning clamping assembly consists of two rotary hydraulic clamping devices and a single-hole positioning device located between the two rotary hydraulic clamping devices.

7. A method for processing a boom using the apparatus according to any one of claims 1-6, characterized in that, Includes the following steps: (1) According to the distribution of positioning holes in the multi-hole positioning clamping group and the single-hole positioning clamping group, make several pre-made holes on the main chord tube of the single-segment boom for cooperating with the guide positioning pin; according to the hole diameter and hole spacing of the four hinge point holes to be drilled on the single-segment boom, select the guide positioning pin and insert it into the corresponding positioning hole. (2) Align the pre-drilled holes on the single-panel boom with the guide positioning pins, lower the single-panel boom, and place the single-panel boom on the multi-hole positioning clamping group and the single-hole positioning clamping group through the guide positioning pins; (3) The V-type hydraulic clamping device and the rotary hydraulic clamping device are respectively supplied with oil. The V-type hydraulic clamping device and the rotary hydraulic clamping device in the single-hole positioning clamping group clamp one main chord tube in the single-segment boom, and the rotary hydraulic clamping device in the multi-hole positioning clamping group clamps and presses the other main chord tube in the single-segment boom. (4) Use a boring and milling CNC machine tool to simultaneously process the four hinge point holes of a single-fan arm; (5) After processing is completed, the V-type hydraulic clamping device and the rotary hydraulic pressing device are reset, and the single-segment boom is taken out.

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