Assembly tool of composite material assembly structure

Abstract

The invention provides an assembly tool of a composite material assembly structure. The assembly tool comprises a metal joint part, a frame structure part, a positioning clamping plate part, an upper beam part part and a lower beam part part. The frame structure part serves as a supporting frame of the whole assembly tool, the metal connector part is installed at the upper end of the inner side of the frame structure part, the upper beam part part is installed on the upper portion of the inner side of the frame structure part, the upper beam part part is installed on the lower portion of the inner side of the frame structure part, and the positioning clamping plate parts are installed on the two sides of the frame structure part. The upper beam part is matched with the metal connector part and the positioning clamping plate part to achieve positioning, hole forming and inspection of the upper beam part and the closed end rib part, and the lower beam part is matched with the positioning clamping plate part to achieve positioning, hole forming and inspection of the lower beam part and the closed end rib part. And the positioning clamping plate part is matched with the metal joint part to realize skin positioning, hole forming and inspection of the inner and outer wall plates. The assembly efficiency can be improved, and the assembly cost can be reduced.

Description

Technical Field

[0001] The present invention belongs to the field of composite material manufacturing, and relates to an assembly tool for a composite material assembly structure, and specifically relates to assembly process control of an assembly structure composed of a plurality of finished parts, and external dimension detection of the assembly structure. Background Art

[0002] Lightweight, high efficiency and low cost are the goals of aircraft body structure design and manufacturing. To achieve this goal, relevant design and manufacturing departments at home and abroad tend to adopt an integrated structure with high structural efficiency. The use of integrated structures for composite materials can reduce the number of parts and fasteners, thereby achieving the purpose of weight reduction, while also effectively reducing costs, and is widely used in aircraft structures.

[0003] Composite assembly structures are efficient structures with high stiffness / weight ratios. They are typical representatives of integrated structures and are widely used in aircraft structures. Composite assembly structures include inner and outer wall skins, rib parts, closed end rib parts, upper beam parts, lower beam parts, etc.

[0004] According to statistics, in the manufacturing of composite aircraft structures, assembly accounts for about 25% to 50% of the total cost and workload of aircraft manufacturing. The assembly work of composite parts and components is basically divided into two categories. One is that the composite manufacturing unit provides composite components, and the assembly unit is responsible for connecting different composite components to the aircraft main frame through connecting mechanisms, bolt standard parts, and nail standard parts; the other is that the composite manufacturing unit is responsible for assembling the composite assembly structure after completing the manufacturing of the composite components. After the assembly unit receives the composite assembly structure, it only needs to install the composite assembly structure on the aircraft body through hanging intersections, etc., which greatly improves the assembly efficiency of the whole machine.

[0005] At present, the research on composite aircraft structure manufacturing is more focused on the design and manufacture of composite components, and the assembly quality of composite assembly structures has a great impact on the assembly quality of the upper level, and even affects the structure and performance of the entire aircraft. The deformation of the composite assembly structure of the new generation of aircraft is small, and it cannot be repaired and processed like metal structures. Therefore, composite assembly structures are scrapped due to assembly quality problems. Therefore, it is particularly important to improve the quality of composite parts, especially assembly-related quality.

[0006] From the current design of assembly tooling for composite assembly structures, the positioning parts in the assembly tooling are basically designed into multiple specifications to meet different assembly size requirements. Because the assembly tooling cannot realize the online monitoring function, the external dimensions of the composite assembly structure are generally checked after it is assembled. However, at this time, the external shape of the composite assembly structure cannot be changed.

[0007] Considering that after the composite assembly structure is handed over to the assembly workshop, it only needs to install a small number of connection mechanisms such as metal hinges and hang the intersections before it can be installed on the aircraft body. Therefore, the manufacturing workshop chooses to add the assembly work of the connection mechanism to the manufacturing process of the composite assembly structure to further improve the assembly efficiency.

[0008] Taking the composite sandwich structure in the composite assembly structure as an example, the metal hinge is first connected to the net size position of the edge strip of the beam part in the sandwich structure by standard parts, and then a secondary co-bonding autoclave molding is performed. In this way, the relative position of the metal hinge and the beam part in the sandwich structure remains fixed, but during the secondary co-bonding autoclave molding process, the beam part in the sandwich structure is prone to surface deformation, causing the position of the metal hinge to deviate from the theoretical position, which in turn causes the central axis position of the metal hinge suspension intersection to deviate from the theoretical position, ultimately causing the composite sandwich structure to fail to hang when transferred to the assembly workshop for hanging, and unable to meet the previous level assembly requirements. In severe cases, it may cause the parts to be scrapped. At the same time, because the metal hinge has been connected to the beam part by standard parts, the metal hinge cannot be removed and reconnected with standard parts.

[0009] In addition, the metal hinges have been connected to the beam parts with standard parts, and the composite sandwich structure has certain stresses, such as thermal stress, internal stress, etc. When the shape and size of the composite sandwich structure are measured under this state, it is impossible to truly reflect the shape and size accuracy of the composite sandwich structure. If you want to measure the gap value between the metal joint and the inner surface of the upper beam in the free state of the composite assembly structure, it is impossible. Summary of the invention

[0010] In response to the above technical quality issues, the present invention is aimed at assembly tooling for composite material component production units, and creatively proposes an assembly tooling for composite material assembly structures, which can realize the assembly and detection functions of multiple composite material assembly structures, improve assembly efficiency, and reduce the assembly cost of composite material assembly structures.

[0011] The technical solution adopted by the present invention is:

[0012] An assembly tool for a composite material assembly structure, the assembly tool comprises a metal joint part, a frame structure part, a positioning card plate part, an upper beam part part and a lower beam part part. The frame structure part serves as the supporting frame of the entire assembly tool, the metal joint part is installed at the inner upper end of the frame structure part, the upper beam part part is installed at the inner upper part of the frame structure part, the upper beam part part is installed at the inner lower part of the frame structure part, and the positioning card plate part is installed on both sides of the frame structure part; the upper beam part part cooperates with the metal joint part and the positioning card plate part to realize the positioning, hole making and inspection of the upper beam part and the closed end rib part, the lower beam part part cooperates with the positioning card plate part to realize the positioning, hole making and inspection of the lower beam part and the closed end rib part, and the positioning card plate part cooperates with the metal joint part to realize the positioning, hole making and inspection of the inner and outer wall panel skins. Specifically:

[0013] The frame structure comprises an upper cross beam 10 , a lower cross beam 11 , a left vertical beam 12 , a right vertical beam 13 , an upper frame beam 14 , an adjustment support 15 , a side beam 16 , a reinforcement beam 17 , and a target point positioning bushing 18 .

[0014] The upper cross beam 10, the lower cross beam 11, the left vertical beam 12, and the right vertical beam 13 are mechanically connected by screw connection to form a basic rectangular frame. There are two side beams 16, and the middle of the top surface is fixedly connected to the lower ends of the left vertical beam 12 and the right vertical beam 13 respectively. The two ends of the bottom surface of the side beam 16 are respectively fixed with adjustment supports 15 for support and balance adjustment. The reinforcing beam 17 is supported between the left vertical beam 12 and the side beam 16 and between the right vertical beam 13 and the side beam 16; the upper frame beam 14 is also a rectangular frame, which is horizontally arranged and fixedly connected above the upper cross beam 10, and a plurality of card lock buckles 64 are provided on both sides of the upper frame beam 14; the upper cross beam 10, the lower cross beam 11, the left vertical beam 12, and the right vertical beam 13 are all provided with target point positioning bushings 18 for positioning or checking the components on the frame structure; a plurality of L-shaped drilling molds 46 are fixed on the lower surface of the upper cross beam 10 for drilling holes in the upper beam parts and rib parts.

[0015] The metal joint part includes a metal joint hanging positioning device 29 and a metal joint 3.

[0016] The metal joint hanging positioning device 29 includes a vertical spiral positioner 22 and a positioning joint 31. The vertical spiral positioner 22 is a standard part, and the end of its movable section is connected to the positioning joint 31 through a positioning pin, which is used to position and connect the metal joint 3. There are a plurality of metal joint hanging positioning devices 29, which are installed on the upper cross beam 10. The installation position is determined according to the hole making and connection position of the wall panel skin, upper beam parts and rib parts, and the movable section of the vertical spiral positioner 22 faces downward. The vertical spiral positioner 22 is a standard part, and a pin is provided between the movable section and the fixed section to determine the longitudinal theoretical position of the metal joint 3; the positioning joint 31 is fixedly connected to the metal joint 3, and the lateral position of the metal joint 3 is adjusted by inserting an equal thickness insert 30 between the two, and finally ensuring that the metal joint 3 is in the theoretical position.

[0017] The metal joint 3 is obtained by extracting a metal hinge arm 1 from a composite material rudder box section for docking with an aircraft body structure and then simplifying it, retaining the center axis 2 and the drilling bushing 4 of the intersection of the metal hinge arm, and the length of the metal joint 3 along the axial direction of the composite material sleeve beam is designed to be 150-200 mm, and a hole is made based on the center axis 2, and is used to connect with the vertical spiral positioner 22 through a positioning joint 31 to determine the theoretical position; the working surface of the metal joint 3 located on the web surface side of the composite material sleeve beam is the web surface side 6 of the upper beam part, and the working surface is offset by 2 mm to the inner surface of the composite material sleeve beam according to the theoretical position; the working surface of the metal joint 3 located on the edge strip surface side of the composite material sleeve beam is the edge strip surface side 5 of the upper beam part, and the working surface is offset by 0.5 mm to the inner surface of the composite material sleeve beam according to the theoretical position, and the offset between the web surface side 6 of the upper beam part and the edge strip surface side 5 of the upper beam part and the theoretical position is used to realize the manufacturing process compensation and measurement functions by inserting gap gaskets.

[0018] The metal joint 3 extends 75-100mm along the upper beam part edge strip surface side 5, and the drilling bushing 4 is located on the extension surface of the upper beam part edge strip surface side 5, which is used to drill the connection holes of the connection area of ​​the upper beam edge strip process allowance and the wall panel skin edge process allowance. After drilling, the parts are connected by high-precision bolts 8 and nuts 9; wherein, the main body of the high-precision bolt 8 is a threaded rod end, and the connection accuracy of the high-precision bolt 8 with the metal joint 3, the upper beam part, and the wall panel skin is ensured by the accuracy of the polished rod, and the threaded part is screwed with the nut 9. A through hole is designed on the web surface side 6 of the upper beam part of the metal joint 3, and a detachable drilling jig 7 is fitted on the through hole, which is used to drill the connection hole of the standard part. After drilling, the drilling jig 7 is removed, and the assembly connection of the upper beam part and the rib part in the composite material assembly structure is connected using standard parts.

[0019] The positioning card plate part includes a first card plate 19 , a second card plate 26 and an outline marking template 27 .

[0020] The first clamping plates 19 are provided in three groups, each group includes two symmetrical clamping plates arranged on both sides of the frame structure part, and the three groups of first clamping plates 19 are located at the rib position inside the assembly structure, of which two groups are arranged vertically and the other group is arranged obliquely; the second clamping plates 26 are provided in two groups, each group also includes two symmetrical clamping plates arranged on both sides of the frame structure part, and the two groups of second clamping plates 26 are located at the closed rib position on both sides of the assembly structure, and are arranged obliquely; the upper and lower ends of the two clamping plates of each group of the first clamping plates 19 and the second clamping plates 26 are respectively connected to the two sides of the upper crossbeam 10 and the lower crossbeam 11 through the connecting seat 21, wherein the upper end of the clamping plate is hinged to the upper crossbeam 10, and the clamping plate is hinged to the upper crossbeam 10. The lower end of the plate is detachably connected to the lower cross beam 11, so that the two cardboards of each group can be opened to both sides around the hinged joints of their upper ends with the upper cross beam 10, and the cardboards are hung on the cardboard lock buckle 64 on the upper frame beam 14 after opening; the opposite sides of the cardboards of the first cardboard 19 and the second cardboard 26 are offset to set the vertical edge action surface 63 according to the offset surface of the outer skin surface of the inner and outer wall panels; a pin-type cardboard end 43 is fixed at one end of each cardboard, which is hinged to the connecting seat 21 on the upper cross beam 10 through a pin shaft 69, and a hinged cardboard end 24 is fixed at the other end, and a hook-shaped opening is set at the end of the hinged cardboard end 24, and a fork 23 with a hinged lock buckle is installed in the connecting seat 21 on the lower cross beam 11, The hinged card end 24 is hung on the hinged locking fork 23 to achieve a detachable connection. When the hinged card end 24 is hung in place, the end face on the back side of the hook-shaped opening is flush with the end face on the same side of the connecting seat 21; the one side action surface 25 of the second card 26 in the thickness direction is extracted and manufactured according to the theoretical position of the wall panel skin edge, which serves as the marking reference for the wall panel skin edge trimming; the first card 19 and the second card 26 are fixedly installed with an upper beam part support 39, a rib part limiter 41 and a rib part tightening device 62, wherein the upper beam part support 39 is fixed by a clamping positioning member 40, which is provided with a spiral tightener 45, which acts on the web surface of the upper beam part side to fix the upper beam part; the rib part limiter 41 is fixed by a positioning pin, and is provided with two perpendicular limiting surfaces 42, one of which is used to limit the edge surface of the rib part to ensure that the rib part is located in the center position of the skeleton, and the other is used to limit the web surface of the rib part to ensure that the rib part is accurately located in the skeleton; the rib part tightening device 62 is fixed by a positioning pin, and is provided with a spiral tightener 45, which acts on the web surface of the rib part to ensure that the position of the rib part in the skeleton remains fixed; the upper fixed end base 58 of the second clamping plate 26 close to the upper beam part is fixed with a closed end rib part drilling jig 65 through a clamping positioning member 40, which is used to make holes in the closed end rib part.

[0021] The outline marking template 27 is a segmented template, which is positioned and fixedly mounted on each first clamping plate 19 and each second clamping plate 26, and is used to cut the outline of the composite material structure. A metal joint drilling backing 28 is installed on the outline marking template 27 at the position corresponding to the metal joint 3 to prevent fiber splitting when drilling the metal joint 3.

[0022] The upper beam component part includes an upper beam positioning measuring part 32, an upper beam component fixed reference end 50, an upper fixed reference end 51 of a closed end rib, an upper beam component adjustable reference end 54, an upper adjustable reference end 55 of a closed end rib, an upper fixed end base 58, and an upper adjustable end base 60.

[0023] The upper fixed end base 58 is fixed to the upper inner side of the right vertical beam 13, and the upper beam part fixed reference end 50 and the closed end rib upper fixed reference end 51 are respectively installed on the upper fixed end base 58 through the clamping positioning parts 40. The action surface of the upper beam part fixed reference end 50 is manufactured by extracting the end surface shape of one side of the upper beam part, and the action surface of the closed end rib upper fixed reference end 51 is manufactured by extracting the end surface shape of one side of the closed end rib part. The two serve as positioning references for the upper beam part and the closed end rib part.

[0024] The upper adjustable end base 60 is fixed on the lower surface of the upper cross beam 10 away from the side of the right vertical beam 13. The upper beam positioning and measuring part 32 is installed on the upper adjustable end base 60, which is a retractable structure. The upper beam part adjustable reference end 54 and the upper adjustable reference end 55 of the closed end rib are respectively installed on the retractable end of the upper beam positioning and measuring part 32 through the clamping positioning part 40, and respectively cooperate with the upper beam part fixed reference end 50 and the upper fixed reference end 51 of the closed end rib to realize the positioning and measurement of the upper beam part and the closed end rib part in the length direction. The upper adjustable reference end 55 of the closed end rib is provided with a drilling bushing for making holes.

[0025] The upper beam positioning measuring part 32 includes a sleeve 35, a slotted screw rod 37, a positioning long pin 38, a T-key 66, and a handle nut 67. A semicircular annular groove is formed at one end of the sleeve 35, and a T-key limiting hole 70 is set on the side of the other end. The middle of the sleeve body is hollowed out, and a sleeve engraved line 36 is formed at the hollowed-out part. The long-line position of the sleeve engraved line 36 is the 0 reference point, and the short-line position interval is 0.1-0.2mm; a boss is provided on the outer axial side of the handle nut 67, which is matched with the semicircular annular groove of the sleeve 35, so that the handle nut 67 can rotate around its own axis in the annular groove, and a threaded through hole is formed on the axial side of the handle nut 67; the outer diameter size of the slotted screw rod 37 matches the inner diameter of the sleeve 35, and one end of the slotted screw rod 37 is screwed to the handle nut 67. Turning the handle nut 67 makes the slotted screw rod 37 move in the sleeve 35, and the other end is fixed to the upper beam part by the clamping positioning member 40 so that it can be adjusted. The reference end 54 and the upper part of the closed end rib are adjustable reference end 55, and the slotted screw 37 is provided with a slot 68 along the length direction. One end of the T-key 66 acts in the slot 68, and the other end acts in the T-key limiting hole 70 of the sleeve 35, so as to limit the movement of the slotted screw 37 along its own axial direction without deflection around the axial direction. The slotted screw 37 is designed with a scale line 34 for cooperating with the sleeve scale line 36 to realize part positioning and measurement, and the long line of the scale line 34 and the sleeve scale line 36 are aligned as the theoretical position; a coaxial through hole 71 is formed at the theoretical position of the sleeve 35 and the slotted screw 37, which is used to insert the positioning long pin 38 to fix the adjustable reference end 54 of the upper beam part and the adjustable reference end 55 of the upper part of the closed end rib at the theoretical position.

[0026] The lower beam part includes a lower beam part positioning plate 20, a lower beam positioning measuring part 33, a lower beam part fixed reference end 52, a closed end rib lower fixed reference end 53, a lower beam part adjustable reference end 56, a closed end rib lower adjustable reference end 57, a lower fixed end base 59 and a lower adjustable end base 61.

[0027] The lower beam part positioning plate 20 is a strip-shaped part with an "L"-shaped cross-section, with a horizontal plate at the bottom, fixedly connected to the middle of the upper surface of the lower cross beam 11, and a variety of positioning parts are installed on it for limiting the width and thickness directions of the lower beam parts, including an L-shaped screw tightening part 47 for limiting the width direction of the lower beam parts, a pressure plate 48 for limiting the thickness direction of the lower beam parts, and a clamp 49 for limiting the thickness direction of the lower beam parts. A screw tightener 45 is also fixed on the lower beam part positioning plate 20 for clamping the lower beam parts in the thickness direction; a drilling jig 44 is fixedly installed on the lower beam part positioning plate 20 through the clamping positioning part 40 for drilling standard parts connecting holes between the lower beam parts and the rib parts.

[0028] The lower fixed end base 59 is fixedly mounted on the upper surface of the lower cross beam 11 close to the right vertical beam 13, and the lower beam part fixed reference end 52 and the closed end rib lower fixed reference end 53 are fixedly mounted on the lower fixed end base 59, serving as the positioning reference for the length direction of the lower beam part and the closed end rib part.

[0029] The lower adjustable end base 61 is fixed to the lower inner side of the left vertical beam 12, and the lower beam positioning and measuring part 33 is fixedly installed on the lower adjustable end base 61. It has the same structure as the upper beam positioning and measuring part 32 and is a retractable structure. The adjustable reference end 56 of the lower beam part and the lower adjustable reference end 57 of the closed end rib are respectively installed on the retractable end of the lower beam positioning and measuring part 33 through the clamping positioning part 40, and cooperate with the fixed reference end 52 of the lower beam part and the lower fixed reference end 53 of the closed end rib to realize the positioning and measurement of the lower beam part and the closed end rib part in the length direction.

[0030] Furthermore, the upper cross beam 10, lower cross beam 11, left vertical beam 12, right vertical beam 13, upper frame beam 14, adjustment support 15, side beam 16, and reinforcement beam 17 are all made of ordinary steel, and a hollow weight-reducing design of square steel tubes is adopted while ensuring structural rigidity.

[0031] Furthermore, the positioning bushing 18 has an inner diameter of φ6.35 mm and is used for positioning laser locators, laser radars, etc. The purpose is to establish a positioning relationship between the laser locator, laser radar and the frame structure, so as to locate or inspect the components on the frame structure. In addition, the target point positioning bushing 18 is designed on different beam structures to facilitate the use of laser locators and laser radars in equipment switching positions.

[0032] Furthermore, the metal joint 3 is made of Invar steel, and its expansion coefficient is close to that of the composite material sleeve beam.

[0033] Furthermore, the fixed reference end 52 of the lower beam part, the fixed reference end 53 of the lower portion of the closed end rib, the upper adjustable reference end 55 of the closed end rib, the adjustable reference end 56 of the lower beam part, the lower adjustable reference end 57 of the closed end rib, etc. are all made of aluminum alloy.

[0034] Furthermore, the upper beam positioning and measuring member 32 and the lower beam positioning and measuring member 33 are made of ordinary steel.

[0035] Furthermore, the upper beam part support member 39, the rib part stopper 41 and the rib part tightening device 62 are made of ordinary steel.

[0036] Furthermore, the positioning joint 31, the drilling jig 44 and the L-shaped drilling jig 46 are preferably made of aluminum.

[0037] The effects and benefits of the present invention are:

[0038] (1) The patent of this invention can realize the assembly, spanwise dimension inspection, coordinated assembly, and surface dimension inspection of composite material assembly structures.

[0039] (2) The present invention can realize the skeleton assembly, end rib sleeve assembly and composite material assembly structure assembly of composite material assembly structure.

[0040] (3) The patent of this invention innovatively proposes a metal joint structure to replace the commonly used metal hinge arm, and simplifies the metal hinge arm into a metal joint with drilling and connection, measurement and surface compensation.

[0041] The metal joints are equipped with high-precision bolts and matching nuts, which realize the connection function of the metal joints after drilling, and ensure the precise connection of the metal joints and the upper beam parts, the metal joints and the upper beam parts, and the wall panel parts within the process allowance.

[0042] (4) The patent of the present invention innovatively proposes the positioning and measuring parts of the upper beam parts and the positioning and measuring parts of the lower beam parts, so that the assembly tooling can realize the spanwise measurement of the composite material assembly structure and coordinate the purpose of assembling the end ribs, thereby avoiding the cost increase caused by a large number of supporting assembly positioning fixtures. At the same time, the spanwise measurement function realizes the function of online measurement, thereby avoiding the scrapping of the composite material assembly structure or the generation of unqualified dimensions due to measurement after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is an axonometric drawing of the assembly tooling.

[0044] Figure 2 This is the front view of the assembly tooling.

[0045] Figure 3 Schematic diagram of the metal hinge arm structure.

[0046] Figure 4 Schematic diagram of the metal joint structure, where (a) and (b) are axonometric views of the metal joint at different angles, and (d) is a schematic diagram of a detachable drilling template.

[0047] Figure 5 Schematic diagram of high-precision bolts and nuts.

[0048] Figure 6 Schematic diagram of the connection between the card board and the connector, wherein (a) is an overall schematic diagram of the card board, (b) is a partial schematic diagram of the card board in a stuck state, and (c) is a partial schematic diagram of the card board in an unstuck state.

[0049] Figure 7Schematic diagrams of a metal joint hanging positioning device, wherein (a) is a schematic diagram of a vertical spiral positioner, (b) is an overall schematic diagram of the metal joint hanging positioning device, (c) is a disassembled schematic diagram of the metal joint hanging positioning device, and (d) is a disassembled perspective view of the metal joint hanging positioning device.

[0050] Figure 8 Schematic diagrams of an upper beam part support, a rib part limiter and a rib part tightening device, wherein (a) is a schematic diagram of an upper beam part support, (b) is a front view of a rib part limiter, (c) is a rear view of a rib part limiter, and (d) is a schematic diagram of a rib part tightening device.

[0051] Fig. 9 It is a schematic diagram of the front view of the drilling template on the assembly tool.

[0052] Fig.10 Schematic diagram of the rear view of the drilling template on the assembly tool.

[0053] Fig.11 Schematic diagram of an L-shaped drill mold.

[0054] Fig.12 Schematic diagram of the adjustable reference end drill template on the upper part of the closed end rib.

[0055] Fig.13 Schematic diagram of the assembly of the upper beam positioning measuring parts, where (a) is the axonometric view and (b) is the front view.

[0056] Fig.14 Schematic diagram of the split front view of the upper beam positioning measurement piece Figure 1 .

[0057] Fig.15 Schematic diagram of the split front view of the upper beam positioning measurement piece Figure 2 .

[0058] Fig.16 This is a rear view split schematic diagram of the upper beam positioning measurement piece.

[0059] Fig.17 Front view of the measuring piece for positioning the lower beam.

[0060] Fig.18 Top view of the measuring piece for positioning the lower beam.

[0061] In the figure: 1 metal hinge arm; 2 center axis; 3 metal joint; 4 drilling bushing; 5 upper beam part edge strip surface side; 6 upper beam part web surface side; 7 removable drilling jig; 8 high-precision bolts; 9 nuts; 10 upper cross beam; 11 lower cross beam; 12 left vertical beam; 13 right vertical beam; 14 upper frame beam; 15 adjustment support; 16 side beam; 17 reinforcement beam; 18 target point positioning bushing; 19 first clamping plate; 20 lower beam part positioning plate; 21 connecting seat; 2 2 vertical spiral positioner; 23 fork with hinged lock; 24 hinged clamp end; 25 action surface; 26 second clamp; 27 outline marking template; 28 metal joint drilling backing; 29 metal joint suspension positioning device; 30 equal thickness insert; 31 positioning joint; 32 upper beam positioning measuring piece; 33 lower beam positioning measuring piece; 34 engraved line; 35 sleeve; 36 sleeve engraved line; 37 slotted screw; 38 positioning long pin; 39 upper beam part support Support; 40 Clamping and positioning piece; 41 Rib part stopper; 42 Stopper surface; 43 Pin-type clamping plate end; 44 Drilling jig; 45 Screw jack; 46 L-shaped drilling jig; 47 L-shaped screw fastener; 48 Pressing plate; 49 Clamp; 50 Upper beam part fixed reference end; 51 Upper fixed reference end of closed end rib; 52 Lower beam part fixed reference end; 53 Lower fixed reference end of closed end rib; 54 Upper beam part adjustable reference end; 55 Upper adjustable reference end of closed end rib Adjustment reference end; 56 Adjustable reference end of lower beam part; 57 Adjustable reference end of lower part of closed end rib; 58 Upper fixed end base; 59 Lower fixed end base; 60 Upper adjustable end base; 61 Lower adjustable end base; 62 Rib part tightening device; 63 Vertical edge action surface; 64 Card plate lock; 65 Drilling jig for closed end rib part; 66 T-key; 67 Handle nut; 68 Slot; 69 Pin; 70 T-key limiting hole; 71 Through hole. DETAILED DESCRIPTION

[0062] In order to better understand the technical solution of the present invention, the present invention takes bearing life prediction as an example and describes the implementation mode of the present invention in detail in combination with the accompanying drawings.

[0063] This embodiment provides an assembly tool for a composite material assembly structure, wherein the assembly tool comprises a metal joint portion, a frame structure portion, a positioning clamp portion, an upper beam component portion, and a lower beam component portion. Figure 1 , Figure 2 , Fig. 9 , Fig.10 shown.

[0064] The frame structure comprises an upper cross beam 10 , a lower cross beam 11 , a left vertical beam 12 , a right vertical beam 13 , an upper frame beam 14 , an adjustment support 15 , a side beam 16 , a reinforcement beam 17 , and a target point positioning bushing 18 .

[0065] The upper cross beam 10, the lower cross beam 11, the left vertical beam 12, and the right vertical beam 13 are mechanically connected by screw connection to form a basic rectangular frame. There are two side beams 16, and the middle of the top surface is fixedly connected to the lower end of the left vertical beam 12 and the right vertical beam 13 respectively. The two ends of the bottom surface of the side beam 16 are respectively fixed with adjustment supports 15 for support and balance adjustment. The reinforcement beam 17 is supported between the left vertical beam 12 and the side beam 16 and between the right vertical beam 13 and the side beam 16; the upper frame beam 14 is also a rectangular frame, which is horizontally arranged and fixedly connected above the upper cross beam 10, and a plurality of card plate lock buckles 64 are provided on both sides of the upper frame beam 14; the upper cross beam 10 is fixedly connected to the lower end of the left vertical beam 12 and the right vertical beam 13. The beam 10, the lower cross beam 11, the left vertical beam 12, the right vertical beam 13, the upper frame beam 14, the adjustment support 15, the side beam 16, and the reinforcement beam 17 are all made of ordinary steel. Under the premise of ensuring the rigidity of the structure, a hollow weight-reducing design of square steel tubes is adopted; the upper cross beam 10, the lower cross beam 11, the left vertical beam 12, and the right vertical beam 13 are all provided with target point positioning bushings 18, and the inner diameter of the positioning bushings 18 is φ6.35mm, which is used for positioning of laser locators, laser radars, etc. The purpose is to establish a positioning relationship between the laser locator, laser radar and the frame structure, so as to locate or inspect the components on the frame structure. In addition, the target point positioning bushings 18 are designed on different beam structures to facilitate the use of laser locators and laser radars in changing positions; a plurality of L-shaped drill molds 46 (see Fig.11 ) is used for drilling holes in the upper beam parts and the rib parts. There are two cases for drilling holes in the upper beam parts and the rib parts. One case is the drilling of standard parts defined by the digital model. The size of the drilling bushing hole on the L-shaped drilling template 46 is φ2.6mm or φ3.1mm. After the initial hole is made, the hole is expanded, reamed, countersunk, etc. are performed in sequence to finally install the standard parts defined by the digital model. The other case is the installation of process standard parts countersunk rivets. The size of the drilling bushing hole on the L-shaped drilling template 46 is φ2.6mm. The nail head is located on the inner surface side of the upper beam part, and the nail head side is not countersunk to facilitate the removal of the subsequent process nails.

[0066] The metal joint part includes a metal joint hanging positioning device 29 and a metal joint 3.

[0067] like Figure 7As shown, the metal joint hanging positioning device 29 includes a vertical spiral positioner 22 and a positioning joint 31. The vertical spiral positioner 22 is a standard part, and the end of its movable section is connected to the positioning joint 31 through a positioning pin, which is used to position and connect the metal joint 3. There are a plurality of metal joint hanging positioning devices 29, which are installed on the upper cross beam 10. The installation position is determined according to the hole making and connection position of the wall panel skin, upper beam parts and rib parts, and the movable section of the vertical spiral positioner 22 faces downward. The vertical spiral positioner 22 is a standard part and can perform telescopic movement. A pin is provided between its movable section and the fixed section, which is used to determine the longitudinal theoretical position of the metal joint 3; the positioning joint 31 is connected to the metal joint 3, and the lateral position of the metal joint 3 is adjusted by inserting an equal thickness insert 30 between the two, so as to finally ensure that the metal joint 3 is in the theoretical position.

[0068] The metal joint 3 is a metal hinge arm 1 (see Figure 3 ) and then simplified, the central axis 2 and the drilling bushing 4 of the intersection of the metal hinge arm are retained, the length of the metal joint 3 along the axial direction of the composite sleeve beam is designed to be 150-200mm, and a through hole with a hole diameter of 6mm-10mm is made based on the central axis 2, which is used to connect with the vertical spiral positioner 22 through the positioning joint 31 to determine the theoretical position; in order to reduce the deadweight of the metal joint 3, the driven shaft and unnecessary structure of the metal hinge arm 1 are removed, and the metal joint 3 mainly retains the working surface, the strengthening ribs, the positioning pin hole, the drilling bushing 4 and other parts (see Figure 4 ), the metal joint 3 is made of Invar steel, and its expansion coefficient is close to that of the composite sleeve beam; the working surface of the metal joint 3 located on the web surface side of the composite sleeve beam is the web surface side 6 of the upper beam part, and the working surface is offset by 2mm to the inner surface of the composite sleeve beam according to the theoretical position, that is, there is a theoretical gap of 2mm between the working surface 6 on the web surface side and the web surface of the composite sleeve beam; the working surface of the metal joint 3 located on the edge strip surface side of the composite sleeve beam is the edge strip surface side 5 of the upper beam part, and the working surface is offset by 0.5 to the inner surface of the composite sleeve beam according to the theoretical position mm, that is, there is a theoretical gap of 0.5 mm between the working surface 5 on the edge strip surface side and the edge strip surface of the composite material sleeve beam. The purpose of the offset between the web surface side 6 of the upper beam part and the edge strip surface side 5 of the upper beam part and the theoretical position is to realize the manufacturing process compensation, measurement and other functions, that is, before curing and molding, a process gap gasket is inserted between the upper beam part and the metal joint 3 in the composite material assembly structure to perform process compensation. After curing and molding, a feeler gauge is used to measure the gap value between the inner surface of the upper beam part and the metal joint 3 in the composite material assembly structure to evaluate the deformation amount of the inner surface of the upper beam.

[0069] The metal joint 3 is equipped with a number of process gap gaskets (common thicknesses are 2mm, 1.9mm, 1.8mm, 1.7mm, 1.6mm, 2.1mm, 2.2mm, 2.3mm, and 2.4mm) to compensate for the gap between the metal joint 3 located on the upper beam web surface side 6 and the upper beam component web surface. The metal joint 3 is equipped with a number of process gap gaskets (common thicknesses are 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, and 0.8mm) to compensate for the gap between the metal joint 3 located on the upper beam edge strip surface side 5 and the upper beam component edge strip surface. Considering that the upper beam component edge strip surface is commonly found in curved surface designs, the metal joint 3 is equipped with a number of gap gaskets generally using a single layer of 0.1mm thick stainless steel sheet or copper sheet. Because stainless steel sheets or copper sheets have certain advantages such as conformability and economy, different numbers of stainless steel sheets or copper sheets are selected according to different compensation gaps.

[0070] The metal joint 3 extends 75-100mm along the edge strip surface side 5 of the upper beam part. The drilling bushing 4 is located on the extension surface of the edge strip surface side 5 of the upper beam part. It is used to drill connecting holes in the connecting area of ​​the upper beam edge strip process allowance and the wall panel skin edge process allowance. The central axis of the drilling bushing 4 should be staggered in space to facilitate operations such as drilling holes in the skeleton in the composite material assembly structure and connecting standard parts without causing spatial interference. The drill bit used in conjunction with the drilling bushing 4 is preferably a 90° angle air drill. Complete process allowances can be retained at the edge of the upper beam part and the edge of the wall panel part. The 90° angle air drill drills along the metal joint drilling bushing 4 from the inside to the outside of the upper beam part edge surface; if a straight shank air drill is selected as the drill bit used in conjunction with the drilling bushing 4, only local process allowances can be retained at the edge of the upper beam part and the edge of the wall panel part. The straight shank air drill drills along the drilling bushing 4 from the outside of the upper beam part edge to the inside. When drilling the drilling bushing 4, the process allowance corresponding to the area outside the upper beam part edge needs to be removed to realize the straight shank air drill drilling operation.

[0071] After the bushing hole 4 is matched with the drilling hole, a high-precision bolt 8 and a nut 9 (see Figure 5 ) connects the parts; among them, the main body of the high-precision bolt 8 is a threaded rod end, which is connected to the thickness area of ​​the process allowance of the upper beam parts, wall panels, etc. through the precision of the polished rod, ensuring the connection accuracy of the high-precision bolt 8 with the metal joint 3, the upper beam parts, and the wall panel skin, and the threaded part is screwed with the nut 9.

[0072] A through hole is designed on the web surface side 6 of the upper beam part of the metal joint 3, wherein the diameter of the through hole is 2-3 mm larger than the diameter of the standard nail head. The detachable drill jig 7 is fitted on the through hole. The diameter of the bushing hole of the detachable drill jig 7 depends on the diameter of the standard nail rod. It is used to drill the connecting holes of the standard parts. After drilling, the drill jig 7 is removed, and the standard parts are used to connect the upper beam parts and the rib parts in the composite material assembly structure. The side of the standard nail head is located on the side of the detachable drill jig 7.

[0073] The positioning card plate part includes a first card plate 19 , a second card plate 26 and an outline marking template 27 .

[0074] The first card plate 19 is provided with 3 groups, each group includes two card plates with symmetrical structure arranged on both sides of the frame structure part, and the 3 groups of first card plates 19 are located at the rib position inside the assembly structure, of which two groups are arranged vertically and the other group is arranged obliquely; the second card plate 26 is provided with two groups, each group also includes two card plates with symmetrical structure arranged on both sides of the frame structure part, and the two groups of second card plates 26 are located at the closed rib position on both sides of the assembly structure, and are all arranged obliquely; the first card plate 19 and the second card plate 26 have a thickness of 15-20mm, and the upper and lower ends of the two card plates of each group are respectively connected to the upper beam 10 and the lower beam 11 through the connecting seat 21, wherein the upper end of the card plate is hinged to the upper beam 10, and the lower end of the card plate is detachably connected to the lower beam 11, so that the two card plates of each group can be opened to both sides around the hinged joints of their respective upper ends with the upper beam 10, and the card plates are hung on the card plate lock buckle 64 on the upper frame beam 14 after opening; Figure 6 As shown, the opposite sides of the first card plate 19 and the second card plate 26 are provided with the vertical edge action surface 63 according to the offset surface of the inner and outer wall panel skin outer surface, and the common offset is 3-5mm. This data comes from the experimental exploration of the relevant composite material assembly structure. The offset must cover the maximum deformation of the largest wall panel skin outer surface, otherwise the first card plate 19 and the second card plate 26 will be unusable; a pin-type card plate end 43 is fixed at one end of each card plate, and is hinged to the connecting seat 21 on the upper crossbeam 10 through a pin shaft 69. The pin-type card plate end 43 and the pin shaft 69 (diameter is 18h6mm, length is 64mm) are both standard parts, and a hinge-type card plate end 24 is fixed at the other end of the card plate, and the hinge-type card plate end 24 is a standard part. A hook-shaped opening is provided at its end, and a hinged locking fork 23 is installed in the connecting seat 21 on the lower cross beam 11. The hinged locking fork 23 is a standard part adapted to the hinged card end 24. The hinged card end 24 is hung on the hinged locking fork 23 to achieve a detachable connection. When the hinged card end 24 is hung in place, its end face on the back side of the hook-shaped opening is flush with the end face on the same side of the connecting seat 21, and the step difference does not exceed 0.2mm; the one side action surface 25 of the second card plate 26 in the thickness direction is extracted and manufactured according to the theoretical position of the wall panel skin edge, which serves as the marking reference for the wall panel skin edge trimming; the upper beam part support 39, the rib part limiter 41 and the rib part tightening device 62 are fixedly installed on the first card plate 19 and the second card plate 26, such as Figure 8As shown, the upper beam part support part 39 is fixed by a clamping positioning part 40, which is provided with a screw tightener 45, which acts on the web surface side of the upper beam part to fix the upper beam part; the rib part limiter 41 is fixed by a positioning pin, which is provided with two perpendicular limiting surfaces 42, one of which is used to limit the rib part edge surface to ensure that the rib part is located in the center position of the skeleton, and the other is used to limit the rib part web surface to ensure that the rib part is accurately located in the skeleton; the rib part tightening device 62 is fixed by a positioning pin, which is provided with a screw tightener 45, which acts on the rib part web surface to ensure that the rib part is located in the skeleton. The position remains fixed; the closed end rib part drilling jig 65 is fixed at the upper fixed end base 58 close to the upper beam part part on the second clamping plate 26 through the clamping positioning part 40, which is used to make holes for the closed end rib part. The drilling bushing hole size of the closed end rib part drilling jig 65 is φ2.6mm or φ3.1mm. After the initial hole is made, the hole is expanded, reamed, countersunk, etc. are made in sequence, and finally the standard parts defined by the digital model are installed.

[0075] The outline marking template 27 is a segmented template, which is positioned and fixedly mounted on each first clamping plate 19 and each second clamping plate 26, and is used to cut the outline of the composite material structure. A metal joint drilling backing 28 is installed on the outline marking template 27 at the position corresponding to the metal joint 3 to prevent fiber splitting when drilling the metal joint 3.

[0076] The upper beam component part includes an upper beam positioning measuring part 32, an upper beam component fixed reference end 50, an upper fixed reference end 51 of a closed end rib, an upper beam component adjustable reference end 54, an upper adjustable reference end 55 of a closed end rib, an upper fixed end base 58, and an upper adjustable end base 60.

[0077] The upper fixed end base 58 is fixed to the upper inner side of the right vertical beam 13, and the upper beam part fixed reference end 50 and the closed end rib upper fixed reference end 51 are respectively installed on the upper fixed end base 58 through the clamping positioning parts 40. The action surface of the upper beam part fixed reference end 50 is manufactured by extracting the end surface shape of one side of the upper beam part, and the action surface of the closed end rib upper fixed reference end 51 is manufactured by extracting the end surface shape of one side of the closed end rib part. The two serve as positioning references for the upper beam part and the closed end rib part.

[0078] like Figures 12 to 16As shown, the upper adjustable end base 60 is fixed on the lower surface of the upper cross beam 10 away from the side of the right vertical beam 13, and the upper beam positioning and measuring member 32 is installed on the upper adjustable end base 60, which is a retractable structure. The upper beam part adjustable reference end 54 and the upper adjustable reference end 55 of the closed end rib are respectively installed on the retractable end of the upper beam positioning and measuring member 32 through the clamping positioning member 40, and respectively cooperate with the upper beam part fixed reference end 50 and the upper fixed reference end 51 of the closed end rib to realize the positioning and measurement of the upper beam part and the closed end rib part in the length direction. The upper adjustable reference end 55 of the closed end rib is provided with a drilling bushing for making holes.

[0079] The upper beam positioning measuring part 32 includes a sleeve 35, a slotted screw rod 37, a positioning long pin 38, a T-key 66, and a handle nut 67. A semicircular annular groove is formed at one end of the sleeve 35, and a T-key limiting hole 70 is set on the side of the other end. The middle of the sleeve body is hollowed out, and a sleeve engraved line 36 is formed at the hollowed-out part. The long-line position of the sleeve engraved line 36 is the 0 reference point, and the short-line position interval is 0.1-0.2mm; a boss is provided on the outer axial side of the handle nut 67, which is matched with the semicircular annular groove of the sleeve 35, so that the handle nut 67 can rotate around its own axis in the annular groove, and a threaded through hole is formed on the axial side of the handle nut 67; the outer diameter size of the slotted screw rod 37 matches the inner diameter of the sleeve 35, and one end of the slotted screw rod 37 is screwed to the handle nut 67. Turning the handle nut 67 makes the slotted screw rod 37 move in the sleeve 35, and the other end is fixed to the upper beam part by the clamping positioning member 40 so that it can be adjusted. The reference end 54 and the upper part of the closed end rib are adjustable reference end 55, and the slotted screw 37 is provided with a slot 68 along the length direction. One end of the T-key 66 acts in the slot 68, and the other end acts in the T-key limiting hole 70 of the sleeve 35, so as to limit the movement of the slotted screw 37 along its own axial direction without deflection around the axial direction. The slotted screw 37 is designed with a scale line 34 for cooperating with the sleeve scale line 36 to realize part positioning and measurement, and the long line of the scale line 34 and the sleeve scale line 36 are aligned as the theoretical position; a coaxial through hole 71 is formed at the theoretical position of the sleeve 35 and the slotted screw 37, which is used to insert the positioning long pin 38 to fix the adjustable reference end 54 of the upper beam part and the adjustable reference end 55 of the upper part of the closed end rib at the theoretical position.

[0080] The rotating handle nut 67 drives the slotted screw rod 37 to move along its axial direction, which can not only determine the theoretical position of the upper beam component assembly as the upper beam component assembly reference, but also determine the upper beam component assembly after the qualified inspection reference. Through the design of the upper beam positioning measuring piece 32, a large number of upper beam component assembly fixtures of different specifications are greatly saved, and the upper beam component position can be measured quickly and effectively. The upper beam positioning and measuring part 32 is located on the adjustable side of the assembly tooling, and can realize the positioning and measurement functions of the upper beam parts and the closed ribs in the length direction. That is, the adjustable reference end 54 of the upper beam part is fixed on the upper beam positioning and measuring part 32 by the clamping positioning part 40, and the upper beam part can be positioned and measured in the length direction. The upper adjustable reference end 55 of the closed end rib is fixed on the upper beam positioning and measuring part 32 by the clamping positioning part 40, and the closed end rib part can be positioned and measured in the length direction; the upper adjustable reference end 55 of the closed end rib is integrated with a drilling jig sleeve, and the drilling bushing hole size of the drilling jig sleeve is φ2.6mm or φ3.1mm. After the initial hole is manufactured, the hole is expanded, reamed, countersunk, etc. are performed in turn, and finally the standard parts defined by the digital model are installed.

[0081] The lower beam part includes a lower beam part positioning plate 20, a lower beam positioning measuring part 33, a lower beam part fixed reference end 52, a closed end rib lower fixed reference end 53, a lower beam part adjustable reference end 56, a closed end rib lower adjustable reference end 57, a lower fixed end base 59 and a lower adjustable end base 61.

[0082] like Fig. 9 and Fig.10 As shown, the lower beam part positioning plate 20 is a strip with an L-shaped cross section, with a horizontal plate at the bottom, fixedly connected to the middle of the upper surface of the lower cross beam 11, and a variety of positioning parts are installed on it, which are used to limit the width and thickness directions of the lower beam parts, including an L-shaped screw fastener 47 for limiting the width direction of the lower beam parts, a pressure plate 48 for limiting the thickness direction of the lower beam parts, and a clamp 49 for limiting the thickness direction of the lower beam parts. The lower beam part positioning plate 20 is also fixed with a screw tightener 45 for clamping the thickness direction of the lower beam parts; the lower beam part positioning plate 20 is fixedly installed with a drilling jig 44 through the clamping positioning member 40, which is used to drill the standard connection hole of the lower beam parts and the rib parts. Except for special cases, the drilling jig 44 is generally a standard installation process part. The bushing hole size of the drilling jig 44 is φ2.6mm. The process standard part selects double-sided countersinking. In addition to the nail head being located on the countersinking side, the head should also be located on the countersinking side to avoid the process standard part interfering with the placement of the wall panel skin.

[0083] The lower fixed end base 59 is fixedly mounted on the upper surface of the lower cross beam 11 close to the right vertical beam 13, and the lower beam part fixed reference end 52 and the closed end rib lower fixed reference end 53 are fixedly mounted on the lower fixed end base 59, serving as the positioning reference for the length direction of the lower beam part and the closed end rib part.

[0084] The lower adjustable end base 61 is fixed to the lower inner side of the left vertical beam 12, and the lower beam positioning measuring member 33 passes through the left vertical beam 12 and is fixedly installed on the lower adjustable end base 61. Fig.17 and 18 As shown, the lower beam positioning and measuring part 33 is able to control the overall size of the assembly tooling through the left vertical beam 12. The lower beam positioning and measuring part 33 has the same structure as the upper beam positioning and measuring part 32, and is a retractable structure. The adjustable reference end 56 of the lower beam part and the adjustable reference end 57 of the lower part of the closed end rib are respectively installed on the retractable end of the lower beam positioning and measuring part 33 through the clamping positioning part 40, and cooperate with the fixed reference end 52 of the lower beam part and the fixed reference end 53 of the lower part of the closed end rib to realize the positioning and measurement of the lower beam part and the closed end rib part in the length direction.

[0085] The method of using the assembly tool of the composite material assembly structure is as follows:

[0086] 1. Open the first and second clamps 19 and 26 to the outside and hang them on the clamp lock 64 on the upper frame beam 14 to ensure that the upper beam parts, lower beam parts, rib parts, wall panel parts, end rib parts and metal joints 3 can be placed on the assembly tooling.

[0087] 2. Rotate the hand wheel of the vertical spiral positioner 22 to make axial movement, insert the latch when the theoretical position is reached, and at the same time, insert the positioning pin to connect the positioning joint 31 to ensure that the positioning joint 31 is located at the theoretical position.

[0088] 3. The metal joint 3 establishes a preliminary positioning relationship with the positioning joint 31 through the positioning pin, and then inserts a plug 30 of equal thickness between the metal joint 3 and the positioning joint 31 to finally ensure that the metal joint 3 is located at the theoretical position.

[0089] 4. Install the upper beam part fixing reference end 50 and the lower beam part fixing reference end 52.

[0090] 5. Install the upper beam part adjustable reference end 54 on the upper beam positioning and measuring member 32. Install the lower beam part adjustable reference end 56 on the lower beam positioning and measuring member 33.

[0091] 6. Rotate the handle nut 67 to move the upper beam part adjustable reference end 54 and the lower beam part adjustable reference end 56 away from one end surface of the upper beam part and the lower beam part in the long side direction, leaving sufficient space for the placement and positioning of the upper beam part and the lower beam part.

[0092] 7. Preliminary positioning of the upper beam parts. Insert a certain thickness of gap pieces between the upper beam parts and the upper beam parts edge strip surface side 5 and the upper beam parts web surface side 6. The end surface of one side of the upper beam parts in the long side direction is preliminarily fitted with the upper beam parts fixed reference end 50. Put down the first and second clamping plates 19 and 26 on the open side, and clamp them on the hinged lock fork 23 of the connecting seat 21 of the lower cross beam 11. Install the upper beam parts support 39 on the first and second clamping plates 19 and 26, and use the upper beam parts support 39 to support the upper beam parts to prevent the upper beam parts from falling.

[0093] The upper beam part is finally positioned. The upper beam part adjustable reference end 54 moves along the long side direction of the upper beam part, the purpose is to ensure that one side end face of the upper beam part in the long side direction is fully fitted with the upper beam part fixed reference end 50. The upper beam part support 39 is used to tighten the upper beam part.

[0094] 8. Based on the first clamping plate 19 and the second clamping plate 26, use a 90° angle air drill to drill a hole in the upper beam part along the drilling bushing 4 on the beam edge surface 5 of the metal joint 3. After the drilling is completed, use high-precision bolts 8 and nuts 9 to connect the metal joint 3 and the upper beam part.

[0095] 9. Preliminary positioning of the lower beam component: One end surface of the lower beam component in the long side direction is preliminarily fitted with the fixed reference end 52 of the lower beam component, and one end surface of the lower beam component in the width direction is preliminarily fitted with the positioning plate 20 of the lower beam component.

[0096] The lower beam part is finally positioned. The adjustable reference end 56 of the lower beam part moves along the end face direction of the long side of the upper beam part so that one end face of the long side of the lower beam part is fully fitted with the fixed reference end 52 of the lower beam part. The lower beam part is fixed by using the L-shaped screw fastener 47 of the lower beam part, the pressing plate 48 in the thickness direction of the lower beam part, and the clamp 49 in the thickness direction of the lower beam part.

[0097] 10. Rib part positioning. The rib part limiting member 41 is installed on the first clamping plate 19 and the second clamping plate 26. The rib part limiting member 41 limits the rib part edge strip surface and the rib part web surface respectively through two limiting surfaces 42. The rib part tightening device 62 tightens the rib part to ensure the fixation of the rib part.

[0098] 11. Standard connection of upper beam parts, lower beam parts and rib parts

[0099] The metal joint 3 and the L-shaped drilling template 46 are used to drill the standard connection holes between the upper beam part and the rib part.

[0100] There are two cases for drilling holes in the upper beam parts and the rib parts. One case is the drilling of standard parts defined by the digital model. The size of the bushing hole on the L-shaped drilling template 46 is φ2.6mm or φ3.1mm. After the initial hole is made, the hole is expanded, reamed, countersunk, etc. are performed in sequence to finally install the standard parts defined by the digital model. The other case is the installation of process standard parts. The process standard parts are preferably HB6306-2.5xY90° countersunk rivets. The size of the bushing hole on the L-shaped drilling template 46 is φ2.6mm, and the nail head is located on the inner surface side of the upper beam part. The nail head side is not countersunk to facilitate the subsequent removal of the process nails.

[0101] Use the drill jig 44 on the positioning plate of the lower beam parts to drill the standard connecting holes between the upper beam parts and the rib parts. Except for special circumstances, the process standard parts are generally installed. The process standard parts are preferably HB6306-2.5xY. The bushing hole size of the drill jig 44 is φ2.6mm. The process standard parts choose double-sided countersinking. In addition to the nail head being located on the countersinking side, the heading should also be located on the countersinking side to avoid the process standard parts interfering with the placement of the wall panel skin.

[0102] 12. Standard connection between the wall panel skin and the upper beam parts and lower beam parts

[0103] Remove the high-precision bolts 8 and nuts 9 connecting the metal joint 3 and the upper beam parts, and install the wall panel skin.

[0104] The 90° angle air drill is used again to drill connection holes along the metal joint 3, and high-precision bolts 8 and nuts 9 are used to connect the metal joint 3, the upper beam parts and the inner and outer wall panels.

[0105] 13. Install the closed end rib parts

[0106] The closed end rib part is initially positioned and the closed end rib part is initially fitted with the upper fixed reference end 51 of the closed end rib and the lower fixed reference end 53 of the closed end rib.

[0107] The end rib part is finally positioned. The upper adjustable reference end 55 of the closed end rib and the lower adjustable reference end 57 of the closed end rib are used to move along the end face direction of the closed end rib part so that the end face of the closed end rib part is fully fitted with the upper fixed reference end 51 of the closed end rib and the lower fixed reference end 53 of the closed end rib.

[0108] The default closed end rib part edge has a 2-5mm process margin for coordination in the closed end rib assembly process. According to the spanwise dimension control requirements of the composite material assembly structure along the end rib direction, the upper beam positioning measuring piece 32 and the lower beam positioning measuring piece 33 are used to adjust the upper adjustable reference end 55 of the closed end rib and the lower adjustable reference end 57 of the closed end rib. When the scale line 34 on the screw rod coincides with the long and medium lines of the sleeve scale line 36, it is the theoretical position of 0 point.

[0109] 14. Assembly connection of closed end rib parts

[0110] Based on the closed end rib part that has been positioned on the assembly tooling, use the closed end rib upper adjustable reference end 55 and the closed end rib part drilling jig 65 to drill the initial hole in the closed end rib part. After the initial hole is made, disassemble the closed end rib upper adjustable reference end 55, the closed end rib part drilling jig 65, etc., and expand, ream, countersink, etc. in turn, and finally install the standard parts defined by the digital model.

[0111] The purpose of this step is to ensure the formation of a complete composite material assembly structure. As for the connection of other standard parts in the structure, in order to save costs and improve the efficiency of assembly tooling, a steel drill template can be used. The drill template is positioned according to the size characteristics, positioning lines, etc. of the composite material assembly structure.

[0112] 15. Composite material assembly structure shape processing

[0113] Install the outline marking template 27 on the first clamping plate 19 and the second clamping plate 20, mark the composite material assembly structure along the outline marking template 27, remove the outline marking template 27, open the first clamping plate 19 and the second clamping plate 26, and remove the composite material assembly structure from the assembly tool. Remove the metal joint 3, cut the edge of the composite material assembly structure along the marking line, and finally obtain the composite material assembly structure.

[0114] 16. Dimensional inspection of composite material assembly structures

[0115] The composite material assembly structure is re-placed on the assembly fixture, the lower beam of the composite material assembly structure is fitted with the lower beam part positioning plate 20, and the closed end rib of the composite material assembly structure is fitted with the upper fixed reference end 51 of the closed end rib. The upper adjustable reference end 55 of the closed end rib and the lower adjustable reference end 57 of the closed end rib are adjusted using the upper beam positioning measuring piece 32 and the lower beam positioning measuring piece 33. The value of the overlap between the engraved line 34 and the sleeve engraved line 36 is the spanwise dimension deviation value.

[0116] The metal joint 3 is positioned on the assembly tool through the metal joint hanging positioning device 29, and the gap value between the inner surface of the upper beam part and the edge strip surface side 5 of the upper beam part and the web surface side 6 of the upper beam part in the composite material assembly structure is measured with a feeler gauge. According to the difference between the edge strip surface side 5 of the upper beam part, the web surface side 6 of the upper beam part and the theoretical inner surface of the upper beam part, the two are converted to obtain the actual deviation value of the inner surface of the upper beam part.

[0117] Put down the first clamping plate 19 and the second clamping plate 26 and install them on the connecting seat 21 located on the lower cross beam 11, use a feeler gauge to measure the gap value between the outer surface of the composite material assembly structure and the first clamping plate 19 and the second clamping plate 26, and according to the difference between the first clamping plate 19 and the second clamping plate 26 and the theoretical outer surface of the composite material assembly structure, the two are converted to obtain the actual deviation value of the outer surface of the composite material assembly structure.

Claims

1. An assembly tool for a composite material assembly structure, characterized in that: The assembly tooling includes a metal joint part, a frame structure part, a positioning card plate part, an upper beam part part and a lower beam part part; the frame structure part serves as a supporting frame for the entire assembly tooling, the metal joint part is installed at the inner upper end of the frame structure part, the upper beam part part is installed at the inner upper part of the frame structure part, the upper beam part part is installed at the inner lower part of the frame structure part, and the positioning card plate part is installed on both sides of the frame structure part; the upper beam part part cooperates with the metal joint part and the positioning card plate part to realize the positioning, hole making and inspection of the upper beam parts and the closed end rib parts, the lower beam part part cooperates with the positioning card plate part to realize the positioning, hole making and inspection of the lower beam parts and the closed end rib parts, and the positioning card plate part cooperates with the metal joint part to realize the positioning, hole making and inspection of the inner and outer wall panel skins.

2. The assembly tool for a composite material assembly structure according to claim 1, characterized in that: The specific structure of the assembly tool is as follows: The frame structure comprises an upper crossbeam (10), a lower crossbeam (11), a left vertical beam (12), and a right vertical beam (13); the upper crossbeam (10), the lower crossbeam (11), the left vertical beam (12), and the right vertical beam (13) are connected to form a basic rectangular frame; a plurality of L-shaped drilling molds (46) are fixed on the lower surface of the upper crossbeam (10) for drilling holes in the upper beam parts and the rib parts; The metal joint part comprises a metal joint hanging positioning device (29) and a metal joint (3); The metal joint hanging positioning device (29) comprises a vertical spiral positioner (22) and a positioning joint (31). The vertical spiral positioner (22) is a standard part. The end of its movable section is connected with a positioning joint (31) for positioning and connecting the metal joint (3). A plurality of metal joint hanging positioning devices (29) are provided and installed on the upper crossbeam (10). The installation position is determined according to the hole making and connection position of the wall panel skin, upper beam parts and rib parts. The movable section of the vertical spiral positioner (22) faces downward. A latch is provided between the movable section and the fixed section of the vertical spiral positioner (22) for determining the longitudinal theoretical position of the metal joint (3). The positioning joint (31) is fixedly connected to the metal joint (3). The lateral position of the metal joint (3) is adjusted by inserting a plug sheet (30) of equal thickness between the two, so as to finally ensure that the metal joint (3) is located at the theoretical position. The metal joint (3) is drilled with the central axis (2) as the reference, and is used to connect with the vertical spiral positioner (22) through the positioning joint (31); the working surface of the metal joint (3) located on the web surface side of the composite material sleeve beam is the web surface side (6) of the upper beam part, and the working surface located on the edge strip surface side of the composite material sleeve beam is the edge strip surface side (5) of the upper beam part; the metal joint (3) is provided with a drilling bushing (4) on the extension surface of the edge strip surface side (5) of the upper beam part, and is used to drill the connection hole of the connection area of ​​the upper beam edge strip process allowance and the wall panel skin edge process allowance; a through hole is designed on the web surface side (6) of the upper beam part of the metal joint (3), and a detachable drilling jig 7 is fitted on the through hole, and is used to drill the connection hole of the standard part; The positioning card plate part comprises a first card plate (19), a second card plate (26) and an outer shape marking template (27); The first clamping plates (19) are provided in three groups, each group including two symmetrical clamping plates arranged on both sides of the frame structure part. The three groups of first clamping plates (19) are located at the rib position inside the assembly structure, two of which are arranged vertically and the other is arranged obliquely. The second clamping plates (26) are provided in two groups, each group also including two symmetrical clamping plates arranged on both sides of the frame structure part. The two groups of second clamping plates (26) are located at the closed rib position on both sides of the assembly structure, and are arranged obliquely. The upper and lower ends of the two clamping plates of each group of the first clamping plates (19) and the second clamping plates (26) are respectively connected to the upper beam (10) and the lower beam (11) on both sides, wherein the upper end of the clamping plate is hinged to the upper beam (10), and the lower end of the clamping plate is detachably connected to the lower beam (11), so that the two clamping plates of each group can be opened to both sides around the hinged position of their upper ends with the upper beam (10). The one side action surface (25) of the second clamping plate (26) in the thickness direction is extracted and manufactured according to the theoretical position of the edge of the wall panel skin. As a marking reference for trimming the edge of the wall panel skin; the first clamping plate (19) and the second clamping plate (26) are fixedly installed with an upper beam part support member (39), a rib part stopper (41) and a rib part tightening device (62), wherein the upper beam part support member (39) is provided with a screw tightener (45) acting on the web surface side of the upper beam part to fix the upper beam part; the rib part stopper (41) is provided with two perpendicular limiting surfaces (42), one of which is used to limit the rib part edge strip surface to ensure that the rib part is located in the center position of the frame, and the other is used to limit the rib part web surface to ensure that the rib part is accurately located in the frame; the rib part tightening device (62) is provided with a screw tightener (45) acting on the rib part web surface to ensure that the rib part is located in a fixed position on the frame; a closed end rib part drilling jig (65) is fixed at the upper fixed end base (58) of the second clamping plate (26) near the upper beam part part, which is used to make holes in the closed end rib part; The outline marking template (27) is a segmented template, which is positioned and fixedly mounted on each first clamping plate (19) and each second clamping plate (26) and is used for cutting the outline of the composite material structure; The upper beam component part comprises an upper beam positioning measuring part (32), an upper beam component fixed reference end (50), an upper fixed reference end (51) of a closed end rib, an upper beam component adjustable reference end (54), an upper adjustable reference end (55) of a closed end rib, an upper fixed end base (58), and an upper adjustable end base (60); The upper fixed end base (58) is fixed to the upper inner side of the right vertical beam (13), and the upper beam part fixed reference end (50) and the upper fixed reference end (51) of the closed end rib are respectively mounted on the upper fixed end base (58) through the clamping positioning member 40, and the action surface of the upper beam part fixed reference end (50) is manufactured by extracting the shape of the end surface of one side of the upper beam part, and the action surface of the upper fixed reference end (51) of the closed end rib is manufactured by extracting the shape of the end surface of one side of the closed end rib part, and the two serve as positioning references for the upper beam part and the closed end rib part; The upper adjustable end base (60) is fixed on the lower surface of the upper cross beam (10) away from the right vertical beam (13). The upper beam positioning and measuring member (32) is installed on the upper adjustable end base (60) and is a retractable structure. The upper beam part adjustable reference end (54) and the upper adjustable reference end (55) of the closed end rib are installed on the retractable end of the upper beam positioning and measuring member (32) to achieve the positioning and measurement of the upper beam part and the closed end rib part in the length direction. The upper adjustable reference end (55) of the closed end rib is provided with a drilling bushing for drilling holes. The lower beam component part comprises a lower beam component positioning plate (20), a lower beam positioning measuring piece (33), a lower beam component fixed reference end (52), a closed end rib lower fixed reference end (53), a lower beam component adjustable reference end (56), a closed end rib lower adjustable reference end (57), a lower fixed end base (59) and a lower adjustable end base (61); The lower beam component positioning plate (20) is fixedly connected to the middle part of the upper surface of the lower cross beam (11), and is provided with a variety of positioning parts, including an L-shaped screw fastener 47 for limiting the width direction of the lower beam component, a pressure plate 48 for limiting the thickness direction of the lower beam component, and a clamp 49 for limiting the thickness direction of the lower beam component. A screw tightener (45) is also fixedly provided on the lower beam component positioning plate (20) for clamping the lower beam component in the thickness direction. A drilling jig 44 is fixedly provided on the lower beam component positioning plate (20) for drilling standard connection holes between the lower beam component and the rib component. The lower fixed end base (59) is fixedly mounted on the upper surface of the lower cross beam (11) near the right vertical beam (13), and the lower beam part fixed reference end (52) and the closed end rib lower fixed reference end (53) are fixedly mounted on the lower fixed end base (59) to serve as positioning references in the length direction of the lower beam part and the closed end rib part; The lower adjustable end base (61) is fixed to the lower inner side of the left vertical beam (12), and the lower beam positioning and measuring member (33) is fixedly mounted on the lower adjustable end base (61). The lower beam part adjustable reference end (56) and the lower adjustable reference end (57) of the closed end rib are mounted on the telescopic end of the lower beam positioning and measuring member (33), respectively cooperating with the lower beam part fixed reference end (52) and the lower fixed reference end (53) of the closed end rib to realize the positioning and measurement of the lower beam part and the closed end rib part in the length direction.

3. The assembly tool for a composite material assembly structure according to claim 2, characterized in that: The upper cross beam (10), the lower cross beam (11), the left vertical beam (12) and the right vertical beam (13) are all provided with target point positioning bushings (18) for positioning or inspecting components on the frame structure.

4. The assembly tool for a composite material assembly structure according to claim 2, characterized in that: The web surface side (6) of the upper beam part on the metal joint (3) is offset by 2 mm toward the inner surface of the composite material sleeve beam according to the theoretical position, and the edge strip surface side (5) of the upper beam part is offset by 0.5 mm toward the inner surface of the composite material sleeve beam according to the theoretical position. The offset between the two and the theoretical position is used to achieve manufacturing process compensation and measurement functions by inserting a gap gasket.

5. The assembly tool for a composite material assembly structure according to claim 2, characterized in that: in, After drilling connection holes in the connection area of ​​the upper beam edge strip process allowance and the wall panel skin edge process allowance through the metal joint (3), the various parts of the metal joint (3) are connected through high-precision bolts (8) and nuts (9). The main body of the high-precision bolt (8) is a polished rod with a thread at the end. The connection accuracy of the high-precision bolt (8) and the metal joint (3), the upper beam parts, and the wall panel skin is guaranteed by the polished rod accuracy. The threaded part is screwed with the nut (9).

6. The assembly tool for a composite material assembly structure according to claim 2, characterized in that: The upper and lower ends of the two card plates of each group of the first card plate (19) and the second card plate (26) are connected to the two sides of the upper beam (10) and the lower beam (11) through a connecting seat (21), respectively; one end of each card plate is fixed with a pin-type card plate end (43), which is hinged to the connecting seat (21) on the upper beam (10) through a pin shaft (69); the other end is fixed with a hinge-type card plate end (24), and the end of the hinge-type card plate end (24) is provided with a hook-shaped opening; a hinged locking fork (23) is installed in the connecting seat (21) on the lower beam (11), and the hinged card plate end (24) is hung on the hinged locking fork (23) to achieve a detachable connection.

7. The assembly tool for a composite material assembly structure according to claim 2, characterized in that: The frame structure also includes an upper frame beam (14), which is a rectangular frame, arranged horizontally and fixedly connected above the upper cross beam (10), and a plurality of card plate locks (64) are provided on both sides of the upper frame beam (14), and the first card plate (19) and the second card plate (26) are hung on the card plate locks (64) after being opened.

8. The assembly tool for a composite material assembly structure according to claim 2, characterized in that: The upper beam positioning measuring member (32) comprises a sleeve (35), a slotted screw rod (37), a positioning long pin (38), a T-key (66), and a handle nut (67); one end of the sleeve (35) is provided with a semicircular annular groove, and the other end side is provided with a T-key limiting hole (70), the middle of the sleeve body is hollowed out, and the hollowed-out part is provided with a sleeve engraved line (36); a boss is axially provided on the outside of the handle nut (67), which is matched with the semicircular annular groove of the sleeve (35) so that the handle nut (67) can rotate around its own axis in the annular groove, and a threaded through hole is axially provided on the handle nut (67); the outer diameter of the slotted screw rod (37) is matched with the inner diameter of the sleeve (35), and one end of the slotted screw rod is screwed with the handle nut (67), and the handle nut (67) is rotated to make the slotted screw rod (37) in the sleeve (35). The slotted screw rod (37) is provided with a slot (68) along the length direction, one end of a T-key (66) acts in the slot (68), and the other end acts in the T-key limiting hole (70) of the sleeve (35), so as to limit the slotted screw rod (37) to move along its own axis without deflection around the axis direction, and a score line (34) is designed on the slotted screw rod (37) to cooperate with the score line (36) of the sleeve to realize the positioning and measurement of the parts; a coaxial through hole (71) is formed at the theoretical position of the sleeve (35) and the slotted screw rod (37), so as to insert a positioning long pin (38) to realize the fixing of the adjustable reference end (54) of the upper beam part and the adjustable reference end (55) of the upper part of the closed end rib at the theoretical position; The lower beam positioning and measuring component (33) has the same structure as the upper beam positioning and measuring component (32).

Images