CN117993112A - Manufacturing process method of passenger-to-cargo main cargo compartment door - Google Patents
Manufacturing process method of passenger-to-cargo main cargo compartment door Download PDFInfo
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Abstract
A manufacturing process method of a passenger-to-cargo main cargo hold door adopts a working mode of joint design, and comprises the following steps: according to the project file and delivery requirement, planning a customer to change the overall process scheme of the main cargo hold door, uniformly planning and coordinating a main assembly positioning reference, a measurement reference and a processing reference, adding a self-positioning assembly characteristic reference surface and a self-positioning reference hole on a part, and adding required process requirements in a main cargo hold door design model to form a three-dimensional digital process model of the main cargo hold door; based on the assembly characteristics and delivery requirements, establishing a three-dimensional digital process model of an assembly tool and a special assembly tool; designing an assembly method based on assembly characteristics and delivery requirements; manufacturing parts, assembly tools and special assembly tools according to the established three-dimensional digital process model; according to the assembly method, the main cargo door is assembled. The application is based on the full digital definition of the main cargo hold door of the passenger to change the cargo, adopts the coordination method of digital quantity transmission, and rapidly develops the main cargo hold door based on the assembly characteristics and the delivery requirements.
Description
Technical Field
The application relates to the technical field of aircraft assembly, in particular to a manufacturing process method of a passenger-to-cargo main cargo hold door.
Background
ARJ21 the passenger changing project is based on market demand and basic aircraft residual value, and the middle-short Cheng Zhixian cargo aircraft specially used for aviation cargo transportation is developed, is mainly used for cargo, mail and express transportation services on domestic airlines and short-range international airlines in partial peripheral countries, and is an important derivative model in the seriation development of ARJ-700 aircraft.
ARJ 21A machine type is provided with a main cargo door and a 9G partition wall on the left side of a front machine body for transporting large containers, a passenger observation window, a service door and an emergency door on the machine body are plugged, the adaptability of floors, machinery and an electric system is changed, the machine type is greatly different from a common basic machine in structure, the size of the main cargo door of ARJ-700 is far larger than that of the openings of the existing ARJ-700 plane and the C919 plane, the size of a general cabin door is about 2000mm, the size of the passenger-to-cargo main cargo door is 3400 x 2600mm, and a passenger plane to cargo machine for autonomously designing and manufacturing a civil plane works in China.
The cabin door is a moving part, especially a large cabin door, has complex coordination relationship, and is hung with a door frame by adopting 12 groups of key hinges. The key hinge assembly consists of 6 claw-shaped hinges and 6 plate-shaped hinges, wherein the length of a single piece is 280mm, the key hinge assembly consists of 10 inserting lugs and inserting slots, and the coaxiality of the total span of 12 groups is 3360mm and is required to be phi 0.3mm. The coordination difficulty of the assembly is high, the coordination assembly of the main cargo compartment door is related to the economy and the flight safety of the aircraft, and the method is a technical key for filling the civil aviation development of China.
The assembly fixture is one of important process equipment for ensuring the assembly accuracy and coordination of the aircraft structure, an assembly worker uses the assembly fixture to accurately position parts, and the assembly work of all parts and assemblies of the aircraft is completed on the assembly fixture. So as to ensure the coordination and coordination relationship between the cabin door and the plane door frame.
In the prior art, the cabin door is generally assembled by adopting a plurality of sets of tools such as a cabin door skeleton assembly tool, a cabin door mechanism assembly tool, a cabin door wall plate assembly tool, a cabin door frame outer assembly tool, a cabin door inspection tool, a cabin door and door frame intersection point coordination work and the like to realize coordination assembly of the cabin door and the machine body structure. Because the number of the tools is large, the coordination links and the routes are long, the manufacturing cost is high, and the assembly period is long. The coordination problem that each assembly after assembly can not be integrated easily occurs, and the waste of human resources is caused.
The domestic civil aviation market prospect is wide, the retired airliner is transformed into the cargo plane, the residual value of the plane is greatly improved, huge profits are brought to airlines, and the cost of developing the passenger-to-cargo plane door is reduced by autonomous innovation to realize high-quality rapid development.
Disclosure of Invention
The application aims to provide a manufacturing process method of a passenger-to-cargo main cargo compartment door, which can quickly develop an assembly tool for assembling the passenger-to-cargo main cargo compartment door, shorten the early-stage research and development time and reduce the research and development cost; meanwhile, the assembly of the main cargo compartment door of the passenger-to-cargo can be realized by only one set of assembly tool, and the assembly efficiency and the assembly precision are improved.
The technical scheme provided by the application is as follows:
A method of manufacturing a passenger to cargo main cargo hold door comprising the steps of:
1) According to engineering files and delivery requirements, a three-dimensional digital process model of a guest-to-cargo main cargo hold door is established, the three-dimensional digital process model of the guest-to-cargo main cargo hold door is a first digital model, and the engineering files of the guest-to-cargo main cargo hold door are reconstructed according to the assembly process requirements of a brand new design to form a new three-dimensional digital process model;
2) Based on assembly characteristics and delivery requirements, a three-dimensional digital process model of an assembly tool and a special assembly tool of a guest-to-cargo main cargo compartment door is established, wherein the three-dimensional digital process model of the assembly tool of the guest-to-cargo main cargo compartment door is a second digital model, and the three-dimensional digital process model of the special assembly tool of the guest-to-cargo main cargo compartment door is a third digital model;
3) Designing an assembly method of a passenger-to-cargo-exchange main cargo compartment door based on assembly characteristics and delivery requirements;
4) Purchasing or manufacturing the parts of the passenger-to-cargo main cargo hold door according to the first digital model; manufacturing the assembly fixture according to the second digital die; manufacturing the special assembly tool according to the third digital model;
5) And according to the assembly method of the guest-to-cargo main cargo hold door, the assembly of the guest-to-cargo main cargo hold door is completed.
In some embodiments, the first digital model in step 1) includes a three-dimensional digital process model of the door body, a three-dimensional digital process model of the door mechanism, and a three-dimensional digital process model of the seal assembly, and three process technology baselines are established based on product structure and delivery requirements.
In some embodiments, the three-dimensional digital process model of the cabin door body in the step 1) includes a three-dimensional digital process model of a skeleton, a three-dimensional digital process model of a skin, and a three-dimensional digital process model of a joint and a flange, and five process separation surfaces based on the skeleton, the skin, the joint and the flange, the seal assembly, and the mechanism assembly are determined.
In some embodiments, the parts of the guest-to-cargo main cargo door in step 4) comprise cantilever joints provided with joint holes, the number of cantilever joints being twelve, and each three cantilever joints forming a set of lock hook joint assemblies; and
The assembly fixture in the step 4) comprises a lock hook joint assembly positioner, wherein the lock hook joint assembly positioner comprises three positioning plates and a first positioning shaft, and the positioning plates are provided with first positioning holes;
The locating plate is suitable for being abutted to the cantilever joint, the first locating shaft is suitable for penetrating through the first locating hole and the joint hole, the locating plate is used for determining the installation position of the cantilever joint through surface contact and hole alignment, and then the lock hook joint assembly locator is used for determining the position of the lock hook joint assembly.
In some embodiments, the assembling method in step 5) includes the steps of: assembling the latch hook connector assembly, said assembling the latch hook connector assembly further comprising the steps of:
Positioning a latch hook joint assembly;
checking the rotation condition of the first positioning shaft;
Positioning a lower cross beam and a longitudinal beam;
The connecting corner piece comprises a first connecting piece and a second connecting piece which are vertically arranged, the first connecting piece is suitable for being attached to the cantilever joint, and the second connecting piece is suitable for being attached to the lower cross beam;
A connecting hole is formed in the first connecting piece, and the first positioning shaft is suitable for penetrating through the connecting hole;
checking the rotation condition of the first positioning shaft;
Assembling the latch hook joint assembly, the lower cross beam, the longitudinal beam and the connecting corner piece;
And (3) checking the rotation condition of the first positioning shaft, if the first positioning shaft is not flexible to rotate, installing a gasket between the first connecting piece and the cantilever joint until the first positioning shaft is flexible to rotate.
In some embodiments, the parts of the passenger and cargo improvement host cargo compartment door in step 4) include a key hinge, where the key hinge is provided with at least two first insert lugs, and a slot is formed between each two adjacent first insert lugs; and
The assembly fixture in the step 4) comprises a key hinge positioner, wherein the key hinge positioner comprises a positioning hinge and a second positioning shaft, the positioning hinge is provided with at least two second inserting lugs, and the second inserting lugs are provided with second positioning holes;
the first insert ear is provided with a first prefabricated hole, the second insert ear is suitable for being inserted into the slot, the second positioning shaft is suitable for penetrating through the second positioning hole and the first prefabricated hole, and the key hinge positioner is used for determining the installation position of the key hinge through surface contact and hole alignment.
In some embodiments, the number of key hinges in the step 4) is twelve, and the key hinges are positioned by eight positioning hinges, and the eight positioning hinges are configured with four second positioning shafts.
In some embodiments, the assembling method in step 5) includes the steps of: the key hinge is assembled, and the key hinge assembling step comprises the following steps:
The second positioning shaft passes through a second positioning hole on the positioning hinge and a first prefabricated hole on the key hinge, the key hinge is temporarily connected to the key hinge positioner, and the key hinge and the cabin door main body are temporarily fixed through a first positioning pin;
checking the rotation condition of the second positioning shafts, and if at least two second positioning shafts in the four second positioning shafts rotate inflexibly, installing a gasket between the cabin door main body and the key hinge until at least three second positioning shafts in the four second positioning shafts rotate flexibly;
Reaming the first prefabricated hole on the key hinge;
checking the rotation condition of the second positioning shafts, and if at least two second positioning shafts in the four second positioning shafts rotate inflexibly, installing a gasket between the cabin door main body and the key hinge until at least three second positioning shafts in the four second positioning shafts rotate flexibly;
Assembling the piano key hinge and the hatch main body;
And checking the rotation condition of the second positioning shafts, if at least two of the four second positioning shafts are inflexible in rotation, removing fasteners for fixing the key hinges and the cabin door main body, and additionally installing a gasket between the cabin door main body and the key hinges until at least three of the four second positioning shafts are flexible in rotation.
In some embodiments, the parts of the passenger change host cargo door of step 4) include a mechanism shaft, a cam, and a rocker arm, each of the cam and the rocker arm adapted to fit over the mechanism shaft; the mechanism shaft is provided with a second prefabricated hole and a third prefabricated hole, the cam is provided with a fourth prefabricated hole, and the rocker arm is provided with a fifth prefabricated hole; and
The special assembly tool in the step 4) comprises positioning blocks and bench drills, wherein the number of the positioning blocks is at least two, and each two positioning blocks form a group of positioning block groups;
The positioning block group is used for clamping the mechanism shaft and fixing the mechanism shaft to the bench drill, a second positioning pin penetrates through the second prefabricated hole and the fourth prefabricated hole, the installation position of the cam is determined through hole alignment, and/or a second positioning pin penetrates through the third prefabricated hole and the fifth prefabricated hole, and the installation position of the rocker arm is determined through hole alignment.
In some embodiments, the assembling method in step 5) includes the steps of: the assembly mechanism shaft comprises the following steps:
Sleeving a cam and a rocker arm on a mechanism shaft;
The positioning block group clamps the mechanism shaft and fixes the mechanism shaft to the bench drill;
The second locating pin passes through a fourth prefabricated hole on the cam and a second prefabricated hole on the mechanism shaft to locate the cam; the second locating pin passes through a fifth prefabricated hole on the rocker arm and a third prefabricated hole on the mechanism shaft to locate the rocker arm;
A drill sleeve is arranged on the bench drill, and the drill bit penetrates through the drill sleeve to ream the second prefabricated hole and the fourth prefabricated hole; reaming the third prefabricated hole and the fifth prefabricated hole;
the mechanism shaft, cam and rocker arm are assembled.
The application has the technical effects that:
1. The application takes full digital definition of a customer-to-cargo main cargo hold door as a basis, adopts a coordination method of digital quantity transmission and a joint design mode, fully considers manufacturing requirements of part processing, positioning, assembly, detection and the like from the beginning of product design, and rapidly generates a three-dimensional digital process model of a required assembly tool based on assembly characteristics and delivery requirements. In addition, when the three-dimensional digital process model of the main cargo compartment door of the passenger-to-cargo is built, product feature positioning coordination is adopted, original engineering files are reconstructed according to the assembly process requirements of brand new design, assembly references and assembly methods are redefined, tool positioning requirements are reduced, the assembly of the main cargo compartment door realized by adopting a plurality of sets of tools in the prior art is reduced to the assembly of the main cargo compartment door realized by adopting only 1 set of assembly tools through simulation analysis and reasonable manufacturing tolerance distribution based on digital twinning, in addition, the function detection, delivery acceptance and on-schedule delivery of the main cargo compartment door are realized by 1 set of tools, all engineering files and delivery requirements are met, the low-cost rapid development of the cargo compartment door in the development stage is realized, the development time of the assembly tools is greatly shortened, and the development cost is reduced. With the assembly fixture that makes of this, only need one set just can realize the equipment of whole guest change cargo compartment door, the installation is more quick, convenient and the precision is high, simultaneously, guest change cargo compartment door's cost of manufacture also has to some extent reduced, and the practicality is strong.
2. The application designs the separating surface according to the structural characteristics and delivery requirements of the passenger-to-cargo main cargo hold door, and divides the passenger-to-cargo main cargo hold door into five technological separating surfaces of a framework, a skin, a joint and flange, a sealing component and a mechanism component. Wherein, the skeleton is the main load-carrying structure of guest change cargo hold door, and the assembler can utilize the locator on the assembly frock earlier, carries out accurate location to the skeleton structure, forms the general structural framework of guest change cargo hold door, later, utilizes the structural framework that has confirmed to confirm the guest change cargo hold door other subassembly's mounted position, and then realizes the equipment of whole hatch door. Therefore, only one assembly tool is needed in the whole assembly process, the assembly is quicker, more convenient and high in precision, and unnecessary waste of human resources can be avoided.
3. In the application, after the position of the lock hook joint assembly is determined, the lock hook joint assembly can be used for assisting in positioning the cross beam, the longitudinal beam and the lock hook shaft, and the assembly precision requirement is higher.
4. The application adopts an assembly mode of 'one-check-one' aiming at the assembly of the key hinge, and can check whether the second positioning shaft can flexibly rotate or not before and after moving the cutter each time, thereby ensuring that the stress in the whole assembly process is as small as possible, and ensuring that the rebound quantity of the key hinge is controllable when a subsequent customer changes a cargo hold door to take off the frame.
5. Aiming at the use requirement of the mechanism shaft and the product characteristics, the application adopts a one-tool one-pin assembly mode, all mechanism shaft assembly is carried out by adopting a mode of using a second positioning pin to fix one hole and reaming one hole, and the application provides an economic and rapid assembly mode reference for mechanism shaft assembly by combining with a numerical control machining technology.
Drawings
The application is described in further detail below with reference to the attached drawings and detailed description:
fig. 1 is a schematic perspective view of a passenger-to-cargo main cargo hold door and an assembly fixture thereof according to an embodiment of the application
FIG. 2 is a schematic perspective view of a passenger to cargo improvement host cargo compartment door according to one embodiment of the present application in one state;
FIG. 3 is a schematic perspective view of a passenger to cargo improvement host cargo compartment door according to one embodiment of the application in another configuration;
FIG. 4 is an enlarged partial schematic view of the three-dimensional structure shown at A in FIG. 3;
FIG. 5 is an enlarged partial schematic view of the three-dimensional structure at B in FIG. 3;
Fig. 6 is a schematic plan view of a key hinge and a retainer thereof according to an embodiment of the present application;
FIG. 7 is a schematic perspective view of a mechanism shaft, cam and rocker arm provided in one embodiment of the present application;
FIG. 8 is a schematic illustration of the assembly of the mechanism shaft, cam and rocker arm provided by one embodiment of the present application;
FIG. 9 is a schematic view of the mechanism shaft and cam positioning counterbores provided by one embodiment of the present application;
FIG. 10 is a flow chart of a method for assembling a passenger to cargo ship's hold door in accordance with one embodiment of the present application;
FIG. 11 is a flow chart illustrating assembly of a mechanism shaft according to an embodiment of the present application.
Reference numerals illustrate:
100. A main cargo door; 110. a shackle adapter assembly; 111. a cantilever joint; 120. a cross beam; 121. a lower cross beam; 130. a longitudinal beam; 140. a key hinge; 141. claw type key hinge; 142. a first key hinge; 143. a second key hinge; 144. a third key hinge; 145. a fourth key hinge; 146. a fifth key hinge; 147. a sixth key hinge; 148. a first insert; 150. a mechanism shaft; 160. a cam; 170. a rocker arm;
200. Assembling a tool; 210. key hinge positioner; 211. a first positioning hinge; 212. a second positioning hinge; 213. a third positioning hinge; 214. a second positioning shaft; 215. a second insert;
310. a positioning block; 320. a bench drill; 321. a drill sleeve; 330. a second positioning pin; 340. a drill bit.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will explain the specific embodiments of the present application with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the application, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present application are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled.
In this context, it should be noted that the term "connected" is to be interpreted in a broad sense, unless explicitly stated and defined otherwise, and may be, for example, a fixed connection, or may be a removable connection, or may be a unitary connection; or may be a mechanical connection, or may be an electrical connection; or may be directly connected or indirectly connected through an intermediary. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
In the embodiment shown in the drawings, the indications of orientation (such as up, down, left, right, front, back, etc.) are not absolute, but rather relative, in describing the structure and movement of the various components and are not intended to limit the orientation of the product in actual use.
In addition, in the description of the present application, ordinal words such as "first," "second," and the like are merely used to distinguish between the description of the associated objects and are not to be construed as indicating or implying a relative importance or order between the associated objects.
ARJ 21A 21-700 passenger to cargo plane project based on ARJ A21-700 aircraft structure, a main cargo compartment door 100 and a 9G blocking wall are added on the left side of the front fuselage of the ARJ A21-700 aircraft structure; the original cabin floor is changed into a main cargo compartment floor; the passenger observation window, the service door and the emergency door on the machine body are plugged, and the adaptability of floors, mechanical and electrical systems is changed. The main cargo door 100 is a structural device for opening and closing a main opening when the aircraft loads and unloads cargoes, is a larger-sized door which is independently developed at present at home, and mainly comprises structural components and mechanism components, wherein the structural components mainly comprise longitudinal beams 130, cross beams 120, side beams, joints, lifting supports, outer skins, inner skins, key hinges 140, sealing elements and the like; the mechanism assembly consists of an actuator, an opening mechanism, a lock mechanism, a latch hook mechanism, a sensor and the like.
The main cargo door 100 is connected by adopting a multi-section spliced key hinge 140, and the total length is 3042mm, and is divided into 12 groups; the main cargo door 100 is connected to the fuselage by stringers 130 and 12 lower joints in a multi-section coaxial and multi-intersection coordinated configuration. The main cargo door 100 is assembled in coordination with the door frame by coordinating the assembly of the door lock intersection with the movement mechanism, completing the assembly of the main cargo door 100.
In the prior art, there are few cabin door assembly tools which are specially arranged for ARJ-700 passenger cargo plane main cargo cabin door 100, in addition, in the process of assembling the aircraft cabin door in the prior art, a plurality of sets of assembly tools are mostly arranged, assembly staff need to finish assembly of all components of the cabin door on corresponding assembly tools respectively, then all the assembled components are integrated together, complete machine assembly of the cabin door can be finished, assembly steps are complicated, cost is high, and the problem that assembly precision of all the components is not matched easily occurs.
In this regard, the present application provides a manufacturing process for a passenger-to-cargo main cargo hold door, which can rapidly develop the assembly fixture 200 for assembling the passenger-to-cargo main cargo hold door 100, thereby shortening the early development time and reducing the development cost; meanwhile, only one set of assembly tool 200 is needed to realize the assembly of the passenger-to-cargo main cargo hold door 100, and the assembly efficiency and the assembly precision are improved.
Specifically, the manufacturing process method comprises the steps of: 1) According to the engineering file and the delivery requirement, a three-dimensional digital process model of the passenger-to-cargo main cargo hold door 100 is established, wherein the three-dimensional digital process model of the passenger-to-cargo main cargo hold door 100 can be simply called a first digital model, and is a new three-dimensional digital process model formed by reconstructing the engineering file of the passenger-to-cargo main cargo hold door 100 according to the assembly process requirement of a brand new design. Specifically, planning a customer to change the overall process scheme of a main cargo hold door according to engineering files and delivery requirements, uniformly planning and coordinating main assembly positioning references, measurement references and machining references, adding self-positioning assembly characteristic reference surfaces and reference holes on parts, and adding process requirements required in a manufacturing process in a hold door product design model; 2) Based on the assembly characteristics and delivery requirements, a three-dimensional digital process model of the assembly tooling 200 of the guest-modified cargo hold door 100 and a special assembly tool is established, and for convenience of description, the three-dimensional digital process model of the assembly tooling 200 of the guest-modified cargo hold door 100 is simply referred to as a second digital model, and the three-dimensional digital process model of the special assembly tool of the guest-modified cargo hold door 100 is simply referred to as a third digital model; 3) Designing an assembly method of the passenger-to-cargo-improvement-host cargo compartment door 100 based on the assembly characteristics and delivery requirements; 4) Purchasing or manufacturing the parts of the customer change cargo hold door 100 according to the first digital model; manufacturing an assembly fixture 200 according to the second digital model; manufacturing a special assembly tool according to the third digital model; 5) The assembly of the entire passenger-to-cargo main cargo hold door 100 is completed according to the method of assembly of the designed passenger-to-cargo main cargo hold door 100.
The manufacturing process method of the passenger-to-cargo main cargo hold door 100 provided in this embodiment uses three-dimensional digital modeling, uses the full-digital definition of the passenger-to-cargo main cargo hold door 100 as a basis, adopts a coordination method of digital quantity transmission, redefines the "assembly process reference" of the parts of the passenger-to-cargo main cargo hold door 100, and rapidly generates the three-dimensional digital process model of the assembly fixture 200 facing the "assembly characteristics" and the "delivery requirements", thereby greatly shortening the early development time of the assembly fixture 200 and reducing the development cost.
In addition, the present embodiment utilizes the three-dimensional digital modeling technique to establish the first digital model, which is more beneficial for technicians to disassemble and reconstruct the structure of the passenger-to-cargo main cargo compartment door 100, and develops an assembly tool 200 which can complete the assembly of the passenger-to-cargo main cargo compartment door 100 only by one set, and forms a set of brand-new assembly method.
Specifically, the manufacturing process method of the main cargo door 100 for changing the passenger and the goods provided by the embodiment adopts a combined design mode, fully considers manufacturing requirements of part processing, positioning, assembly, detection and the like from the beginning of product design, establishes a three-dimensional digital process model, adopts product characteristic positioning coordination, reduces the positioning requirement of the assembly tool 200, reduces the assembly of the main cargo door 100 realized by adopting a plurality of sets of tools in the prior art to the assembly of the main cargo door 100 realized by adopting only one set of assembly tool 200 through simulation analysis and reasonable manufacturing tolerance distribution based on digital twin, and realizes the function detection, delivery acceptance of the main cargo door 100 by adopting the other set of tools, achieves all engineering files and delivery requirements, delivers according to the schedule, and realizes the low cost and quick development of the main cargo door 100 in the development stage.
Referring to fig. 1, the assembly fixture 200 developed by the manufacturing process of the passenger-to-cargo main cargo door 100 according to the present embodiment includes various locators, and the locators can determine the mounting positions of the parts of the passenger-to-cargo main cargo door 100 by aligning the surface contact holes, so as to achieve accurate positioning and high assembly accuracy.
In actual production, the locators on the assembly fixture 200 are all of detachable structures, so that the assembly and disassembly can be flexibly performed, the interference of parts possibly occurring in the assembly process of the passenger-to-cargo main cargo hold door 100 can be avoided, and the flexibility and the practicability are high.
Specifically, according to the structural features and delivery requirements of the passenger-to-cargo main cargo door 100, three process technology baselines are established (the process technology baselines refer to a method for determining reference values of various key parameters in a process flow so as to ensure product quality and production efficiency), and the method sequentially comprises the following steps: 1. cabin door main part, 2, cabin door mechanism, 3, seal assembly. The cabin door main body mainly comprises a cabin door framework, an inner skin, an outer skin, a joint, a flange component and other structures, and in the first digital-analog reconstructed in the step 1), the cabin door main body mainly comprises a three-dimensional digital process model of the cabin door main body, a three-dimensional digital process model of the cabin door mechanism and a three-dimensional digital process model of the sealing component. The cabin door mechanism and the sealing component are mutually independent and are related to the structure of the cabin door main body, and the cabin door main body structure is selected to be assembled preferentially because the cabin door main body structure tolerance is abundant relative to the cabin door mechanism, and the cabin door mechanism and the sealing component are assembled in an assembly mode of tool adjustment assembly.
Further, because the cabin door main body mainly comprises a cabin door skeleton, an inner skin, an outer skin, a joint, a flange component and other structures, the cabin door skeleton is composed of longitudinal beams 130, cross beams 120 and a frame component, and is a main bearing structure, in this embodiment, the main cargo door 100 is divided into five process separation surfaces of the skeleton, the skin, the joint, the flange, the sealing component and the mechanism component, and the cabin door main body is installed in a manner that the cabin door skeleton is used as an assembly reference, and the skin surface is tightly attached to the skeleton shape.
In the overall structure of the passenger-to-cargo main cargo hold door 100, the longitudinal beams 130 are of a main load-carrying structure and are divided into long longitudinal beams 130 and short longitudinal beams 130, the upper sides of the longitudinal beams 130 are connected with the upper cross beams 120 (the cross beams 120 closest to the top of the cargo aircraft in the door), and the lower sides of the longitudinal beams 130 are connected with the lower cross beams 121 (the cross beams 120 closest to the bottom of the cargo aircraft in the door); the cross beams 120 are sub-load bearing structures for maintaining the rigidity of the door, 6 cross beams are laid out, the cross beams 130 are divided into a plurality of sections, the upper 5 cross beams 120 (the upper cross beam 120 and the 4 middle cross beams 120) are connected with the inner skin, and the lower cross beam 121 is not connected with the inner skin due to the arrangement of the mechanism.
In this embodiment, the assembling personnel can determine the mounting positions of the cross beam 120 and the longitudinal beam 130 by using the positioner on the assembling tool 200 to form a general structural frame of the cabin door, and then determine the mounting positions of other components of the cabin door by using the determined structural frame, so as to realize the assembly of the whole cabin door. Therefore, only one assembly tool 200 is needed in the whole assembly process, the assembly is quicker, more convenient and more accurate, and unnecessary waste of human resources can be avoided. Moreover, the longitudinal beams 130 and the transverse beams 120 serve as important bearing structures, so that the subsequent assembly difficulty can be greatly reduced by positioning and assembling firstly, and the assembly process can be accelerated.
Specifically, referring to fig. 10, the method of assembling the guest-modified host cargo door 100 of step 5) of the present embodiment includes the steps of: the lower beam 121 is installed according to the lower beam 121 locator, and then the latch hook connector assembly 110 is installed according to the latch hook connector assembly locator. Next, the long stringers 130 and the short stringers 130 are installed according to the stringer 130 locators and the installed shackle connector assemblies 110. The mounting position of the middle cross member 120 is then determined from the mounted stringers 130. Then, the upper beam 120 is installed according to the upper beam 120 positioner, and then the front side beam and the rear side beam are installed according to the side beam positioner, so that the assembly of the cabin door framework can be completed. After the cabin door skeleton is assembled, whether the skeleton gap meets the standard or not needs to be checked, and riveting and fixing are performed after the skeleton gap meets the standard.
And then installing a port frame and a backing plate according to the cabin door framework, installing a wallboard, and checking the clearance between the wallboard and the framework after the wallboard is installed. And (5) checking the wall plate framework, and then making holes on the wall plate framework to complete the assembly of the wall plate framework. Subsequently, the inner skin and the connection plate are installed, and after the installation is completed, the door body is adjusted in posture and the key hinge 140 is installed in a predetermined position. Next, the upper lifting support is installed, and then the key hinge 140 and the weather shield are installed. And after the installation is finished, the wallboard is subjected to template trimming to manufacture positioning holes, and a sealing groove is installed. And then, the cushion plate, the observation window and the flap can be subjected to preset installation. After the installation is completed, the water retaining groove is installed, and then the flanges at the middle part and the lower part are installed. Then, the lower joint is installed, and after the installation is completed, the partially assembled passenger and cargo improvement main cargo door 100 is detached from the assembly fixture 200 along the normal direction of the outer skin. Finally, the assembly of the entire door can be accomplished by installing the flap and mechanism assembly onto the partially assembled passenger and cargo improvement host cargo compartment door 100.
In one exemplary embodiment, referring to fig. 3 and 5, the number of shackle connector assemblies 110 on the passenger cargo main cargo door 100 is four, and each set of shackle connector assemblies 110 includes three cantilever connectors 111, with connector holes provided in the cantilever connectors 111. In contrast, the assembly fixture 200 includes a latch hook connector assembly positioner, and each set of latch hook connector assemblies is positioned by a latch hook connector assembly positioner. The lock hook joint assembly positioner comprises three positioning plates and a first positioning shaft, wherein first positioning holes are formed in the positioning plates, at this time, the positioning plates are suitable for abutting against the cantilever joints 111, the first positioning shaft is suitable for penetrating through the first positioning holes and the joint holes, the positioning plates are aligned through surface contact and the holes to determine the installation positions of the cantilever joints 111, and then the lock hook joint assembly positioner is made to determine the positions of the lock hook joint assemblies 110.
Specifically, the steps in the method of assembling the passenger and cargo improvement host cargo compartment door 100 provided in this embodiment are as follows: installing the shackle adapter assembly 110 further comprises the steps of: locating the shackle adapter assembly 110; checking the rotation condition of the first positioning shaft; positioning the transverse and longitudinal beams 130; positioning a connecting corner piece, wherein the connecting corner piece comprises a first connecting piece and a second connecting piece which are vertically arranged, the first connecting piece is suitable for being attached to the cantilever joint 111, and the second connecting piece is suitable for being attached to the lower cross beam 121; the first connecting piece is provided with a connecting hole, and the first positioning shaft is suitable for penetrating through the connecting hole; checking the rotation condition of the first positioning shaft; assembling the shackle adapter assembly 110, the lower cross beam 121, the stringers 130, and the connection tabs; and checking the rotation condition of the first positioning shaft, and if the first positioning shaft is not flexible to rotate, installing a gasket between the first connecting piece and the cantilever joint 111 until the first positioning shaft is flexible to rotate.
Aiming at the cantilever joint 111, the embodiment adopts an assembly mode of 'three-fixing three-detecting', namely, the cantilever joint 111 is independently positioned, and after positioning and clamping, whether the first positioning shaft rotates flexibly is checked, so that stress is avoided; after the cantilever joint 111 is positioned, the transverse beam 130 is positioned (the positioned transverse beam 120 does not comprise the lower transverse beam 121 positioned at the beginning); after the beam 120 is positioned, positioning the connecting angle piece, and after the connecting angle piece is positioned to form a connecting hole, checking whether the first positioning shaft still rotates flexibly; and finally, the cantilever joints 111, the transverse longitudinal beams 130 and the connecting corner pieces are installed, whether the positioning shaft still rotates flexibly is checked, if the first positioning shaft can not rotate flexibly in the process, the stress in the whole assembly process is as small as possible through the methods of corner piece cushioning and riveting sequence adjustment, and therefore the rebound quantity of the subsequent lower frame latch hook joint is controllable.
In one example embodiment, referring to fig. 1-4 and 6, the guest modification master cargo door 100 has twelve key hinges 140, six of which are claw-type key hinges 141 and six of which are plate-type key hinges 140. The six claw-type key hinges 141 are symmetrically disposed on the front and rear sides of the six plate-type key hinges 140, at least two first insert lugs 148 are disposed on each key hinge 140, an insert slot is formed between every two adjacent first insert lugs 148, and a prefabricated hole is further disposed on each first insert lug 148. In contrast, the assembly fixture 200 further includes a key hinge positioner 210 for positioning the key hinge 140, where the key hinge positioner 210 includes a positioning hinge and a second positioning shaft 214, and the positioning hinge is further divided into a first positioning hinge 211, a second positioning hinge 212, and a third positioning hinge 213. The first positioning hinge 211 is provided with two second inserting lugs 215, and the two second inserting lugs 215 are provided with second positioning holes, and the mounting position of one of the key hinges 140 is determined by the alignment of the holes. The second positioning hinge 212 is provided with three second inserting lugs 215, and the three second inserting lugs 215 are respectively provided with a second positioning hole, and the mounting positions of the two adjacent key hinges 140 are determined through hole alignment. The third positioning hinge 213 is provided with four second insert lugs 215, and the four insert lugs are provided with second positioning holes, and the mounting positions of two adjacent key hinges 140 or three consecutive key hinges 140 are determined by hole alignment.
Specifically, the number of the first positioning hinges 211 is four, and the four positioning hinges are used for butting the four claw-shaped key hinges 141 at the outermost edge, at this time, the second insert ear 215 on the first positioning hinge 211 can be inserted into the first insert slot on the claw-shaped key hinge 141, and the second fixed shaft passes through the second positioning hole and the first prefabricated hole to connect the first positioning hinge 211 with the corresponding claw-shaped key hinge 141, so as to realize the positioning of the four claw-shaped key hinges 141 at the outermost edge.
And, the number of the second positioning hinges 212 is one, and the number of the third positioning hinges 213 is four. Referring to fig. 6, for convenience of description, six plate-type key hinges 140 are made to be a first key hinge 142, a second key hinge 143, a third key hinge 144, a fourth key hinge 145, a fifth key hinge 146, and a sixth key hinge 147, which are sequentially arranged. One third positioning hinge 213 is used for abutting the first key hinge 142 and the claw type key hinge 141 adjacent to the first key hinge 142, the other third positioning hinge 213 is used for abutting the first key hinge 142, the second key hinge 143 and the third key hinge 144, the other third positioning hinge 213 is used for abutting the third key hinge 144 and the fourth key hinge 145, the second positioning hinge 212 is used for abutting the fifth key hinge 146 and the sixth key hinge 147, and the last third positioning hinge 213 is used for abutting the sixth key hinge 147 and the claw type key hinge 141 adjacent to the sixth key hinge 147. Thus, each key hinge 140 can be positioned by the key hinge positioner 210 with high assembly accuracy.
Specifically, the number of key hinges 140 of the passenger cargo compartment door 100 is twelve, which are positioned by eight positioning hinges, and four second positioning shafts 214 are provided in total for the eight positioning hinges.
Wherein, assembly personnel can utilize the gasket to eliminate assembly and part manufacturing deviation when assembling the piano key hinge 140 to and, the several claw piano key hinges 141 that lie in the outside are detachable construction, are favorable to the hatch door to lift off from the assembly fixture 200 after the equipment is accomplished, and the practicality is strong.
Specifically, the steps in the method of assembling the passenger and cargo improvement host cargo compartment door 100 provided in this embodiment are as follows: the key hinge 140 is installed, further comprising the steps of: the second positioning shaft 214 passes through the second positioning hole on the positioning hinge and the first preformed hole on the key hinge 140, temporarily connects the key hinge 140 to the key hinge positioner 210, and the key hinge 140 and the door body are temporarily fixed by the first positioning pin; checking the rotation condition of the second positioning shafts 214, if at least two second positioning shafts 214 of the four second positioning shafts 214 are not flexible to rotate, installing a gasket between the cabin door main body and the key hinge 140 until at least three second positioning shafts 214 of the four second positioning shafts 214 are flexible to rotate; reaming a first preformed hole in the key hinge 140; checking the rotation condition of the second positioning shafts 214, if at least two second positioning shafts 214 of the four second positioning shafts 214 are not flexible to rotate, installing a gasket between the cabin door main body and the key hinge 140 until at least three second positioning shafts 214 of the four second positioning shafts 214 are flexible to rotate; assembling the key hinge 140 and the door body; and checking the rotation condition of the second positioning shafts 214, if at least two second positioning shafts 214 in the four second positioning shafts 214 are not flexible to rotate, removing the fasteners for fixing the key hinge 140 and the cabin door body, and additionally installing a gasket between the cabin door body and the key hinge 140 until at least three second positioning shafts 214 in the four second positioning shafts 214 are flexible to rotate.
In this embodiment, an assembly mode of "one check" is adopted for the key hinge 140, that is, the key hinge 140 is positioned to form a first prefabricated hole, after being temporarily connected with the key hinge positioner 210, it is checked whether the second positioning shaft 214 rotates flexibly, for example, if the second positioning shaft 214 rotates unevenly beyond one, the cabin door is fixed, then the cabin door and the key hinge 140 are subjected to cushion adjustment, the non-skin side is preferentially added by cushion until the four second positioning shafts 214 rotate flexibly, then the first prefabricated hole of the key hinge 140 is expanded to the end hole for re-tensioning and checking whether the second positioning shaft 214 can rotate flexibly, otherwise, cushion adjustment is performed, finally, the fastener installation of the key hinge 140 is completed, and after installation, it is checked whether the second positioning shaft 214 rotates flexibly, otherwise, the fastener cushion adjustment is removed, and the whole assembly process is to check whether the second positioning shaft 214 rotates flexibly before and after each time, so that the stress in the whole assembly process is as small as possible, and the rebound amount of the subsequent key hinge 140 is controllable. In addition, the coaxiality of the piano hinge 140 is checked by using the checking pin after the piano hinge 140 is released, so that the assembling precision of the passenger and cargo-carrying main cargo door 100 is ensured.
In one example embodiment, referring to fig. 3, 5 and 7-9, the mechanism components on the passenger improvement main cargo door 100 consist of a lock shaft assembly, a front-to-back latch shaft assembly, a boost prevention door shaft assembly, a shackle shaft assembly; the lock shaft length 3300mm, the eight-piece fan lock and rocker arm 170 angle offset by 1 degree, and the rest mechanism shaft 150 rocker arm 170 angle offset by 0.5 degree. All the mechanism shafts 150 use an error-proofing platform and the end faces thereof as reference of part machining A, B, the mechanism shafts 150 use a C reference as reference, and as reference of part manufacturing and detection, tolerance phi of each coordination hole, profile position and profile is 0.08mm, axial angle deviation of an assembly process hole is 0.1 degree, and coaxiality of each mechanism shaft 150 is 0.15mm.
Specifically, the parts of the passenger and cargo improvement main cargo door 100 include a mechanism shaft 150, a cam 160, and a rocker arm 170, the cam 160 and the rocker arm 170 each being adapted to be sleeved on the mechanism shaft 150, and the mechanism shaft 150 being provided with a second preformed hole and a third preformed hole, the cam 160 being provided with a fourth preformed hole, and the rocker arm 170 being provided with a fifth preformed hole. The special assembly tool in step 4) includes positioning blocks 310 and a bench drill 320, the number of the positioning blocks 310 is at least two, and each two positioning blocks 310 form a group of positioning blocks 310, the mechanism shaft 150 can be clamped and fixed to the bench drill 320, the second positioning pin 330 can pass through the second and fourth pre-fabricated holes, the mounting position of the cam 160 can be determined by hole alignment, and the second positioning pin 330 can pass through the third and fifth pre-fabricated holes, and the mounting position of the rocker arm 170 can be determined by hole alignment.
In the prior art, for example, the assembly tooling of the hatch door mechanism of the item A220 has the detection precision of 0.08mm, low tooling use efficiency and high detection difficulty, and in the embodiment, in view of early experience, the assembly is carried out by adopting the scheme of positioning the process guide hole and the second positioning pin 330 and detecting the inspection block, so that twelve sets of tooling cost of about 360 ten thousand tooling cost and tooling maintenance cost of 6 ten thousand per year are expected to be saved.
Specifically, referring to fig. 11, the steps in the method of assembling the passenger improvement host cargo compartment door 100 provided in this embodiment are as follows: the installation of the mechanism assembly on the partially assembled passenger and cargo-altering host cargo door 100 further comprises the steps of: the cam 160 and the rocker arm 170 are sleeved on the mechanism shaft 150; the positioning block 310 sets the clamping mechanism shaft 150 and secures the mechanism shaft 150 to the bench drill 320; the second locating pin 330 passes through a fourth preformed hole on the cam 160 and a second preformed hole on the mechanism shaft 150 to locate the cam 160, and the second locating pin 330 passes through a fifth preformed hole on the rocker arm 170 and a third preformed hole on the mechanism shaft 150 to locate the rocker arm 170; the drill floor is provided with a drill bushing 321, and a drill bit 340 penetrates through the drill bushing 321 to ream the second prefabricated hole and the fourth prefabricated hole and ream the third prefabricated hole and the fifth prefabricated hole; the mechanism shaft 150, cam 160, and rocker arm 170 are assembled.
In one embodiment, the second positioning pin 330 may also be inserted into the drill sleeve 321 to assist in positioning the mechanism shaft 150 and the cam 160, or the mechanism shaft 150 and the rocker arm 170, and after positioning is completed, the second positioning pin 330 on the drill sleeve 321 is removed, the drill bit 340 is replaced, and the prefabricated hole on the mechanism shaft 150, the mechanism shaft 150 and the cam 160, or the mechanism shaft 150 and the rocker arm 170 is reamed.
Aiming at the use requirements of the mechanism shafts 150 and the characteristics of products, the embodiment adopts a one-tool one-pin assembly mode, all mechanism shafts 150 are assembled in a mode of using the second locating pin 330 to fix one hole and expand one hole, and the hole making work is carried out by customizing the ultra-long guide reamer. Saddle parts of lock shafts have the installation angle deviation smaller than 0.8 degrees, the other mechanism shafts 150 have the deviation smaller than 0.3 degrees to meet the use requirements of the mechanism, the success of the technical scheme benefits from the progress of numerical control machining technology, and an economic and rapid assembly mode reference can be provided for the assembly of the mechanism shafts 150 with moderate angle deviation requirements in the follow-up machine types.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the parts of a certain embodiment that are not described or depicted in detail may be referred to in the related descriptions of other embodiments.
It should be noted that the above embodiments can be freely combined as needed. The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. A method of manufacturing a passenger to cargo main cargo compartment door, comprising the steps of:
1) According to engineering files and delivery requirements, a three-dimensional digital process model of a guest-to-cargo main cargo hold door is established, the three-dimensional digital process model of the guest-to-cargo main cargo hold door is a first digital model, and the engineering files of the guest-to-cargo main cargo hold door are reconstructed according to the assembly process requirements of a brand new design to form a new three-dimensional digital process model;
2) Based on assembly characteristics and delivery requirements, a three-dimensional digital process model of an assembly tool and a special assembly tool of a guest-to-cargo main cargo compartment door is established, wherein the three-dimensional digital process model of the assembly tool of the guest-to-cargo main cargo compartment door is a second digital model, and the three-dimensional digital process model of the special assembly tool of the guest-to-cargo main cargo compartment door is a third digital model;
3) Designing an assembly method of a passenger-to-cargo-exchange main cargo compartment door based on assembly characteristics and delivery requirements;
4) Purchasing or manufacturing the parts of the passenger-to-cargo main cargo hold door according to the first digital model; manufacturing the assembly fixture according to the second digital die; manufacturing the special assembly tool according to the third digital model;
5) And according to the assembly method of the guest-to-cargo main cargo hold door, the assembly of the guest-to-cargo main cargo hold door is completed.
2. A method of manufacturing a passenger and cargo-improving host cargo hold door according to claim 1, characterized in that,
The first digital model in the step 1) comprises a three-dimensional digital process model of a cabin door main body, a three-dimensional digital process model of a cabin door mechanism and a three-dimensional digital process model of a sealing assembly, and three process technology baselines based on product structures and delivery requirements are established.
3. A method of manufacturing a passenger and modified cargo hold door according to claim 2, characterized in that,
The three-dimensional digital process model of the cabin door main body in the step 1) comprises a three-dimensional digital process model of a framework, a three-dimensional digital process model of a skin and a three-dimensional digital process model of a joint and a flange, and five process separation surfaces based on the framework, the skin, the joint and the flange, the sealing component and the mechanism component are determined.
4. A process for manufacturing a passenger and modified cargo hold door according to claim 3, characterized in that,
The parts of the passenger-to-cargo main cargo compartment door in the step 4) comprise cantilever joints, wherein the cantilever joints are provided with joint holes, the number of the cantilever joints is twelve, and each three cantilever joints form a group of lock hook joint assemblies; and
The assembly fixture in the step 4) comprises a lock hook joint assembly positioner, wherein the lock hook joint assembly positioner comprises three positioning plates and a first positioning shaft, and the positioning plates are provided with first positioning holes;
The locating plate is suitable for being abutted to the cantilever joint, the first locating shaft is suitable for penetrating through the first locating hole and the joint hole, the locating plate is used for determining the installation position of the cantilever joint through surface contact and hole alignment, and then the lock hook joint assembly locator is used for determining the position of the lock hook joint assembly.
5. A method of manufacturing a passenger and cargo-improving host cargo compartment door according to claim 4, wherein said assembling method of step 5) comprises the steps of: assembling the latch hook connector assembly, said assembling the latch hook connector assembly further comprising the steps of:
Positioning a latch hook joint assembly;
checking the rotation condition of the first positioning shaft;
Positioning a transverse beam and a longitudinal beam;
the connecting corner piece comprises a first connecting piece and a second connecting piece which are vertically arranged, the first connecting piece is suitable for being attached to the cantilever joint, and the second connecting piece is suitable for being attached to the lower cross beam;
A connecting hole is formed in the first connecting piece, and the first positioning shaft is suitable for penetrating through the connecting hole;
checking the rotation condition of the first positioning shaft;
Assembling the latch hook joint assembly, the lower cross beam, the longitudinal beam and the connecting corner piece;
And (3) checking the rotation condition of the first positioning shaft, if the first positioning shaft is not flexible to rotate, installing a gasket between the first connecting piece and the cantilever joint until the first positioning shaft is flexible to rotate.
6. A process for manufacturing a passenger and modified cargo hold door according to claim 3, characterized in that,
The part of the passenger-to-cargo main cargo compartment door in the step 4) comprises a key hinge, wherein the key hinge is provided with at least two first inserting lugs, and a slot is formed between every two adjacent first inserting lugs; and
The assembly fixture in the step 4) comprises a key hinge positioner, wherein the key hinge positioner comprises a positioning hinge and a second positioning shaft, the positioning hinge is provided with at least two second inserting lugs, and the second inserting lugs are provided with second positioning holes;
the first insert ear is provided with a first prefabricated hole, the second insert ear is suitable for being inserted into the slot, the second positioning shaft is suitable for penetrating through the second positioning hole and the first prefabricated hole, and the key hinge positioner is used for determining the installation position of the key hinge through surface contact and hole alignment.
7. A method of manufacturing a passenger and modified cargo hold door according to claim 6, characterized in that,
The number of the key hinges in the step 4) is twelve, the key hinges are positioned by eight positioning hinges, and the eight positioning hinges are provided with four second positioning shafts.
8. A method of manufacturing a passenger and cargo-improving host cargo compartment door according to claim 7, wherein said assembling method of step 5) comprises the steps of: the key hinge is assembled, and the key hinge assembling step comprises the following steps:
The second positioning shaft passes through a second positioning hole on the positioning hinge and a first prefabricated hole on the key hinge, the key hinge is temporarily connected to the key hinge positioner, and the key hinge and the cabin door main body are temporarily fixed through a first positioning pin;
checking the rotation condition of the second positioning shafts, and if at least two second positioning shafts in the four second positioning shafts rotate inflexibly, installing a gasket between the cabin door main body and the key hinge until at least three second positioning shafts in the four second positioning shafts rotate flexibly;
Reaming the first prefabricated hole on the key hinge;
checking the rotation condition of the second positioning shafts, and if at least two second positioning shafts in the four second positioning shafts rotate inflexibly, installing a gasket between the cabin door main body and the key hinge until at least three second positioning shafts in the four second positioning shafts rotate flexibly;
Assembling the piano key hinge and the hatch main body;
And checking the rotation condition of the second positioning shafts, if at least two of the four second positioning shafts are inflexible in rotation, removing fasteners for fixing the key hinges and the cabin door main body, and additionally installing a gasket between the cabin door main body and the key hinges until at least three of the four second positioning shafts are flexible in rotation.
9. A process for manufacturing a passenger and modified cargo hold door according to claim 3, characterized in that,
The parts of the passenger-to-cargo main cargo compartment door in the step 4) comprise a mechanism shaft, a cam and a rocker arm, wherein the cam and the rocker arm are both suitable for being sleeved on the mechanism shaft; the mechanism shaft is provided with a second prefabricated hole and a third prefabricated hole, the cam is provided with a fourth prefabricated hole, and the rocker arm is provided with a fifth prefabricated hole; and
The special assembly tool in the step 4) comprises positioning blocks and bench drills, wherein the number of the positioning blocks is at least two, and each two positioning blocks form a group of positioning block groups;
The positioning block group is used for clamping the mechanism shaft and fixing the mechanism shaft to the bench drill, a second positioning pin penetrates through the second prefabricated hole and the fourth prefabricated hole, the installation position of the cam is determined through hole alignment, and/or a second positioning pin penetrates through the third prefabricated hole and the fifth prefabricated hole, and the installation position of the rocker arm is determined through hole alignment.
10. A method of manufacturing a passenger and cargo-improving host cargo compartment door according to claim 9, wherein said assembling method of step 5) comprises the steps of: the assembly mechanism shaft comprises the following steps:
Sleeving a cam and a rocker arm on a mechanism shaft;
The positioning block group clamps the mechanism shaft and fixes the mechanism shaft to the bench drill;
The second locating pin passes through a fourth prefabricated hole on the cam and a second prefabricated hole on the mechanism shaft to locate the cam; the second locating pin passes through a fifth prefabricated hole on the rocker arm and a third prefabricated hole on the mechanism shaft to locate the rocker arm;
A drill sleeve is arranged on the bench drill, and the drill bit penetrates through the drill sleeve to ream the second prefabricated hole and the fourth prefabricated hole; reaming the third prefabricated hole and the fifth prefabricated hole;
the mechanism shaft, cam and rocker arm are assembled.
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