CN103386600B - Boeing airtight plate nut mounting process instrument and supplies - Google Patents
Boeing airtight plate nut mounting process instrument and supplies Download PDFInfo
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- CN103386600B CN103386600B CN201310307889.3A CN201310307889A CN103386600B CN 103386600 B CN103386600 B CN 103386600B CN 201310307889 A CN201310307889 A CN 201310307889A CN 103386600 B CN103386600 B CN 103386600B
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Abstract
The invention discloses a kind of Boeing airtight plate nut mounting process instrument and supplies, satellite hole pore-forming is carried out by the first technique component, because the first technique component is by the location of coaxial positioning pin in screw hole, ensure the reference precision of satellite hole pore-forming, to be coordinated that to carry out the pier nose of manufactured head to two rivets shaping simultaneously again with riveting gun head by top iron, not only increase working (machining) efficiency, and the crimp airtight plate nut base produced because of rivet pier nose after thoroughly having stopped installation first fastening rivet and cause rubber seal and covering to fit untight problem further, ensure the quality that airtight plate nut is riveted.Because riveting gun head is led by axial positioning sleeve, make it in axial direction move, when constructing to the constraint in its generation radial direction and support, damage can not be caused because of vibrations to the structure of surrounding, further ensure that the quality of processing.
Description
Technical field
The present invention relates to a kind of Boeing airtight plate nut mounting process instrument and supplies.
Background technology
In aircraft maintenance work, such as installation fuselage radome fairing or this kind of needs of freight house wear strip usually adopt airtight plate nut fitted bolt to realize connecting through the connection in pressurizing area and non pressurized region.As shown in Fig. 1 middle and upper part, this kind of airtight plate nut 10 have the sealing top (its main part) of the round table-like or ladder arched roof shape of ladder and bottom (in figure lower end) with a rubber seal 11, the side contacted with far-end covering (inside panel) 2 rubber seal 11 after installing rivet by the satellite hole 12 being symmetrically distributed in screw hole 3 both sides produces extruding force and compresses and produce plastic deformation, and plays the effect of sealing.
Owing to not yet there being the instrument being specifically designed to airtight plate nut and installing at present, now adopt the general utility tool such as alignment pin, riveting gun, top iron one by one fastening rivet to be installed more.Therefore, existing airtight plate nut flow of installation has following shortcoming:
1. first alignment pin is inserted in the corresponding screw hole of airtight plate nut 10 or a fastener receptacles in coupling satellite hole 12 via the screw hole 3 on covering or satellite hole 12 in above-mentioned technical process, utilizes the axial tension of alignment pin to be adjacent to far-end covering 2 by airtight plate nut 10.Because alignment pin is only by the axial tension of interference fit generation, relatively little, when after installation first fastening rivet because of crimp that the shaping meeting of rivet pier nose causes airtight plate nut base to produce, and the axial tension of alignment pin is not enough to overcome this distortion, the fine and close seal 11 of final guide rubber and covering are fitted not tight, and then cause pressurization gas or leak of liquid in body, bring potential safety hazard to aircraft flight.
2. the installation procedure technique of traditional airtight plate nut 10 efficiency that wastes time and energy is low.During examination, whether worker only fits closely with the rubber seal 11 of the airtight plate nut 10 of visual judgement with covering, the inadequate rigorous and scientific of the method for inspection.Fundamentally cannot ensure the rubber seal 11 of airtight plate nut 10 and effective laminating of far-end covering 2, the installation quality and the air-tightness that complete rivet after installing cannot ensure.
3., owing to varying in housing construction, common riveting gun head and top iron often for want of effectively supporter and object of reference, cannot complete the installation of two rivets simultaneously.And easily make riveting gun head and top iron produce radial significantly displacement and beat because of vibrations when riveting, the former usually makes near-end covering 1 surface produce pit and damage the pneumatic flatness and the safety in utilization that are unfavorable for aircraft, the overlay coating of airtight plate nut 10 is usually damaged by the latter, affects airtight plate nut 10 anti-corrosion property energy and durable usability.
4. choose in satellite hole 12 installs fastening rivet around the screw hole 3 on fuselage skin, general adopt Steel Ruler measurement size data after, transfer to the position in mark satellite hole 12, screw hole 3 both sides with marking pen.This method error cannot be distributed in screw hole 3 both sides accurately by satellite hole 12 symmetry more greatly.
In addition, when covering drills through the satellite hole 12 for installing fastening rivet, Structure Repair Manual requires that the axis in satellite hole 12 should perpendicular to covering plane, if covering is thicker, then rely on merely the skills and experience of worker easily can occur relatively large deviation, cause satellite hole 12 axis and covering plane out of plumb, finally cause the satellite hole 12 on covering and airtight plate nut 10 fastening rivet installing hole disalignment, satellite hole 12 pitch-row on covering and airtight plate nut 10 fastening rivet hole pitch-row inconsistent, the lighter there will be assemblage gap and affects air-tightness and the airworthiness of aircraft on installation faying face, severe one can cause airtight plate nut to install.
Summary of the invention
Therefore, the object of the present invention is to provide the special mounting process equipment of the airtight plate nut of a kind of Boeing, and mounting process, to improve the installation quality of airtight carriage nut.
The present invention is by the following technical solutions:
According to one aspect of the present invention, a kind of Boeing airtight plate nut mounting process equipment, comprising:
First technique component, there is a cuboid block, to tighten up a screw the coaxial positioning pin in hole to be positioned covering perpendicular to this face is provided with in a face of this cuboid block, and then, cuboid block has a pair axis being parallel for satellite hole drill pin drill bit guiding in the satellite hole pilot hole of coaxial positioning pin, and two satellite hole pilot holes are about the axis for axis symmetry of coaxial positioning pin;
Second technique component is a top iron, and the anvil face of this top iron has the via hole at coupling airtight plate nut sealing top, and the anvil face part about this via hole symmetry covers two corresponding satellite holes;
3rd technique component, comprise one for passing described screw hole with the pretension bolt connecting airtight plate nut and the axial positioning sleeve be placed on this pretension bolt screw rod, this axial positioning sleeve is positioned at the side, pretension bolt bolt head place of covering; And
4th technique component, for working face has the riveting gun head in axial location hole, wherein axial location hole is directed at described axial positioning sleeve, and working face covers two satellite holes.
According to another aspect of the present invention, the airtight plate nut mounting process of a kind of Boeing, comprises the following steps:
1) use positioning tool set screw hole, the positioning tool of coupling is by being positioned screw hole with the bearing pin of described screw hole shaft hole matching, and positioning tool has the pilot hole mating airtight plate nut satellite hole;
2) lead plug satellite hole, compresses positioning tool in far-end covering, ensures that location is reliable, is directed to a satellite hole pore-forming on covering, then to another satellite hole pore-forming with a satellite guidance hole;
3) beat counterbore, the assembling of coupling rivet, beats counterbore to satellite hole;
4) airtight plate nut is located, airtight plate nut is in place in far-end covering side, then use a pretension bolt to connect described airtight plate nut by screw hole, pretension bolt described in pretension in near-end covering side, the seat side end face of airtight plate nut and far-end covering are fitted; Wherein axial positioning sleeve is equipped with in the bolt head side of pretension bolt;
5) riveter nail, mate two rivets in two satellite holes, two rivet technique heads are in near-end covering side, formed anvil face holding two rivet striding across airtight plate nut sealing top in far-end covering side by top iron, and in near-end covering side, carry out shaping by the riveting gun head being directed at described axial positioning sleeve to the two rivet other ends;
6) pretension bolt is removed.
According to the present invention, satellite hole pore-forming is carried out by the first technique component, because the first technique component is by the location of coaxial positioning pin in screw hole, ensure the reference precision of satellite hole pore-forming, to be coordinated that to carry out the pier nose of manufactured head to two rivets shaping simultaneously again with riveting gun head by top iron, not only increase working (machining) efficiency, and the crimp airtight plate nut base produced because of rivet pier nose after thoroughly having stopped installation first fastening rivet and cause rubber seal and covering to fit untight problem further, ensure the quality that airtight plate nut is riveted.Because riveting gun head is led by axial positioning sleeve, make it in axial direction move, when constructing to the constraint in its generation radial direction and support, damage can not be caused because of vibrations to the structure of surrounding, further ensure that the quality of processing.
Above-mentioned Boeing airtight plate nut mounting process equipment, damage in order to avoid covering produces when riveting airtight plate nut and covering, the described face that first technique component is being provided with coaxial positioning pin is configured with neonychium.
Above-mentioned Boeing airtight plate nut mounting process equipment, described neonychium gluing is mounted on corresponding surface, is convenient to change, and has certain adhesive force, ensures carrying out smoothly of processing.
Above-mentioned Boeing airtight plate nut mounting process equipment, the described side that cuboid block is being the end with the side being provided with coaxial positioning pin is provided with leader, convenient control cuboid block.
Above-mentioned Boeing airtight plate nut mounting process equipment, described top iron has three anvil faces, and wherein a pair anvil face is relatively parallel, and an anvil face of remaininging is orthogonal with two parallel anvil faces, has reasonable adaptability.
Above-mentioned Boeing airtight plate nut mounting process equipment, two via holes corresponding to orthogonal two anvil faces are communicated with the U-lag being formed as pushing up iron one termination, compact conformation.
The airtight plate nut mounting process of above-mentioned Boeing, in step 4), before pretension bolt is installed, rivet correspondence is inserted airtight plate nut rivet hole and corresponding satellite hole, prevent the corresponding aperture that satellite hole and airtight plate nut occur during pretension bolt pretension from position occurring and offset.
The airtight plate nut mounting process of above-mentioned Boeing, in step 1), needs to install additional the rubber protection pad that hardness is less than covering between positioning tool and covering, so as to protection covering.
The airtight plate nut mounting process of above-mentioned Boeing, described pretension bolt adopts torque wrench when pretension, and applied force is 30LB, when ensureing reasonable pretension, reduces the issuable damage of covering.
Accompanying drawing explanation
Fig. 1 is the explosive view that cloth hole, a kind of satellite hole device is in using state.
Fig. 2 is the explosive view of the corresponding frock adaptation of airtight plate nut mounting process.
Fig. 3 is the structural representation of a kind of many anvil faces top iron.
In figure: 1. near-end covering, 2. far-end covering, 3. screw hole, 4. coaxial positioning pin; 5. neonychium, 6. satellite hole pilot hole, 7. vertical hole guiding device, 8. cloth hole device handle; 9. more than anvil face top iron, 10. airtight plate nut, 11. rubber seal, 12. satellite holes; 13. fastening rivet, 14. axial location sleeves, 15. pretension bolts, 16. axial location holes; 17. riveting gun heads, 18. anvil face A, 19. ladder round platform grooves; 20. anvil face B, 21.U type groove, 22. anvil face C.
Detailed description of the invention
With reference to Figure of description 1, relate to used the first technique component for accurately punching, can lead to the drill bit of punching, ensure the positional precision between hole and screw hole 3, here hole on covering, near-end covering 2 as shown in Figure 1 and far-end covering 1 overlapping portion.
Should be appreciated that near-end is the orientation that is reference with airtight plate nut 10, airtight plate nut 10 side is near-end, and contrary orientation is far-end.
Screw hole 3 herein, for refering in particular to, namely mates the screw hole 3 be positioned on covering of airtight plate nut 10, as illustrated in fig. 1 and 2.
Drilling tool in Fig. 1 is vertical hole guiding device 7, and its main body is a rectangular structure, has pair of satellite pilot hole 6 above, leads for lead plug.
Should be appreciated that being expressed as about screw hole 3 axle is the distribution hole in axle center about satellite hole.So near and, vertical hole guiding device 7 in FIG screw hole 3 corresponding on covering opposite face be provided with coaxial positioning pin 4, so two satellite guidance holes 6 are about the axis for axis symmetry of this coaxial positioning pin 4.
The concept that coaxial positioning pin 4 is alignment pin is retrained, according to general understanding mechanically, alignment pin usually adopts hole to sell interference fit and realizes accurately location, can be understood as coaxial positioning pin 4 and screw hole 3 at this to sell to coordinate to be formed by corresponding hole and locate, the position so adjusting vertical hole guiding device 7 just can meet the accurate location in satellite hole 12.
Coaxial steady pin 4 is vertical with vertical hole guiding device 7 bottom surface in FIG, as perpendicularity, is then that technique ensures, more accurate better.
The lower end of coaxial steady pin 4 can be carried out chamfering or lead circle, is imported screw hole 3 to facilitate.
In the construction shown in fig. 1; also is furnished with neonychium 5; by the perforate mode of neonychium 5 with the perforate mode of screw hole 3 with satellite hole 12; corresponding with vertical hole guiding device 7; to contact by alignment pin 4 adhesive that rear material number is BMS5-95 with vertical hole guiding device 7 bottom surface and bottom surface bonds, guarantee that the hole above neonychium 5 is coaxial with the corresponding hole on vertical hole guiding device 7.
In the construction shown in fig. 1, vertical hole guiding device 7 is also furnished with device handle 8 of deploying to ensure effective monitoring and control of illegal activities, and on long side surface as shown in Figure 1, vertically connects, also can each handles of symmetrical connection, does not affect boring.
Hold handle 8 in far-end covering 2 side, inserted by coaxial positioning pin 4 in screw hole 3, wherein screw hole 3 is with coaxial positioning pin 4 for hole axle coordinates, and radial dimension is identical, can consider based on matched in clearance, ensures the precision of location.
Holding handle 8 rotates to proper angle; satellite hole guide hole 6 is made to be in the design attitude in satellite hole 7; certainly; if do not have handle still can adjust vertical hole guiding device 7; then firmly compress, make neonychium 5 be close to far-end covering 2, then 40# drill jig is held on air drill; with the satellite hole pilot hole 6 of vertical hole guiding device 7 for guiding, near-end covering 1 and far-end covering 2 get out satellite hole 12.
Due to the most standardization of the parts on Boeing, therefore relate to herein as airtight plate nut 10 be also standard component, the parameter in corresponding satellite hole 12 is also determined, mates 40# drill bit described above and processes.
In the process; neonychium 5 quality of rubber materials hardness used is less than covering aluminum alloy material used; can ensure can not damage covering when rotation cloth hole; satellite hole pilot hole 6 simultaneously above vertical hole guiding device 7 plays the effect of plumb; can ensure that got out satellite hole 12 is axially perpendicular to covering plane; the spacing in two satellite holes 10 and the fastener receptacles of installed airtight plate nut are apart from equal, and securing member here, corresponds to fastening rivet 13.
Behind the location of coaxial positioning pin 4, screw hole 3 is identical to the distance of screw hole with the fastener receptacles of airtight plate nut 10 with the distance in two satellite holes 12, above-mentioned two constraintss can ensure fastening rivet 13] and the fastener receptacles of airtight plate nut 10 and covering on satellite hole 12 there is higher axiality, to ensure that processed satellite hole 12 meets the installation of airtight plate nut 10.
Erection unit and the technique of the airtight plate nut of Boeing are described further combined with the installation of airtight plate nut 10 and accompanying drawing 1-3 below.
With reference to Fig. 2, it is airtight plate nut mounting process explosive view.After satellite hole on near-end covering is made into counter sink, again by fastening rivet 13 through after the fastener receptacles of the satellite hole 12 on covering and airtight plate nut 10, make pretension bolt 15 by the power that screw gun or torque wrench apply 30LB, airtight plate nut 10 be fitted through after axial location sleeve 14 and screw hole 3 with covering distal flat surface successively.
Wherein pretension bolt 15 is as the part of the 3rd technique component, and for the pre-pressing of airtight plate nut 10, naturally its screw thread should be consistent with the screw thread of airtight plate nut 10, screw rod can comprise polished rod and screw mandrel two parts, can be also only screw mandrel.
In the structure shown in Fig. 2, the screw portion of pretension bolt 15 comprises screw mandrel and polished rod, wherein polished rod part is supporting an axial positioning sleeve 14, is pressed on near-end covering 1 by the bolt head of pretension bolt 15, and polished rod part coordinates with axial positioning sleeve 14 and forms reliable positioning guide column.
And correspondingly, containing riveting gun head 17 as shown in the lower part of Figure 2 in 4th technique component, its working face namely its upper surface has centre bore, namely axial location hole 16, axial location hole 16 coordinates with axial positioning sleeve 14 axle sleeve and forms guide pillar guide sleeve structure, guide effect is formed to riveting gun head 17, for the pier nose of fastening rivet 13.
In the structure shown in Fig. 2, more clearly finds out, based on the setting of symmetrical structure, under making two fastening rivet 13 satellite hole 12 being covered in the working face of riveting gun head 17 in other words.
Corresponding to pier nose technique, be furnished with top iron in far-end covering 2 side, in the structure shown in Fig. 2, use top iron be many anvil faces top iron 9, met the installation of the airtight plate nut 10 of multiple application site.
As for top iron, naturally need anvil face, the sealing top of airtight plate nut 10 should be got out of the way simultaneously, namely in structure as shown in Figure 2 except the part of base, therefore, anvil face has via hole, to get out of the way sealing top, the position of simultaneously mating satellite hole 12 has again anvil face part.
In the structure shown in Fig. 2, many anvil faces top iron 9 has three anvil faces, wherein a pair anvil face is relatively parallel, upper and lower surface as shown in Figure 2, an anvil face of remaininging is orthogonal with two parallel anvil faces, the left surface of many anvil faces top iron 9 in Fig. 2, like this, different anvil faces can be used in different positions, to make it have more application, and overall structure therefore do not become too fat to move.
Further, in order to simplify structure, as shown in Fig. 2 top, two via holes corresponding to orthogonal two anvil faces are communicated with the U-lag being formed as pushing up iron one termination.
Existence due to this pretightning force makes the rubber seal 11 on airtight plate nut 10 can produce elastic deformation and touch far-end skin-surface, and this pretightning force is identical with the moment finally completing required mounting screw after airtight plate nut, can ensure the optimum sealing of seal washer.During applying pretightning force, fastening rivet 13 can produce constraint circumferentially to airtight plate nut 10, makes the rotation that it can not produce circumferentially along with the frictional force between screw thread pair.
Riveting gun head 17 is installed on riveting gun, make axial location sleeve 14 with riveting gun head on axial location hole 16 carry out hole axle and coordinate, this constraint can guarantee that axial location sleeve 14 axial location hole 16 is coaxial, now riveting gun head is carried out axial constraint by axial location sleeve 14, it is made in axial direction to move, when constructing, constraint and support in radial direction being produced to it, damage can not be caused because of vibrations to the structure of surrounding.
Many anvil faces top iron 9 is placed in airtight plate nut 10 rear, (with reference to Fig. 3: many anvil faces top iron uses schematic diagram) can select different anvil faces according to position close to complexity, wherein ladder round platform groove 19 carries out removal design of material according to the profile of airtight plate nut 10, can the projection of airtight plate nut 10 be inserted wherein, and make both coaxial, now anvil face A18 is as anvil face.U-type groove 21 carries out removal design of material according to the profile of airtight plate nut 10, if present position cannot use anvil face A18, then selects anvil face B20 or anvil face C22 to install anvil face as rivet by U-type groove 21 airtight plate nut 10 and uses.
In above process, the working face of anvil face A18, anvil face B20, anvil face C22 and riveting gun head 15 all can cover the technique head of two fastening rivet 13 simultaneously, can simultaneously by installation forming while of disposable for two rivets when installation, while significantly improving operating efficiency, cause sealing ring and covering laminating not closely because the shaping meeting of rivet pier nose produces crimp to plate nut base after thoroughly having stopped installation first fastening rivet, cause the potential safety hazard that gas and leak of liquid cause.
Material selec-tion: neonychium 5 is made with rubber; coaxial positioning pin 4, vertical hole guiding device 7, cloth hole device handle 8 jointly composition vertical cloth hole, satellite hole device coaxial positioning pin 4, vertical hole guiding device 7, cloth hole device handle 8 adopt No. 45 steels to do, can machined one-body molded also can under the prerequisite ensureing precision welding production.
Many anvil faces top iron 9 adopts No. 45 steels to do, and has processing intensity and hardness preferably.Riveting gun head 17 adopts No. 45 steels to do, and the working face contacted with rivet technique head adopts mirror finish process, and to prevent from producing damage to the technique head of rivet, axial location sleeve 14 adopts 2024-T3 aluminum alloy materials to make.
Boeing airtight plate nut 10 mounting process engineering drawing carries out processing and fabricating.Airtight plate nut 10 and the Boeing standard component required by the enforcement of fastening rivet 13 selection work, pretension bolt 15 selects Boeing standard component BACB30VF.
Claims (7)
1. a Boeing airtight plate nut mounting process equipment, is characterized in that, comprising:
First technique component, there is a cuboid block, to tighten up a screw the coaxial positioning pin in hole to be positioned covering perpendicular to this face is provided with in a face of this cuboid block, and then, cuboid block has a pair axis being parallel for satellite hole drill pin drill bit guiding in the satellite hole pilot hole of coaxial positioning pin, and two satellite hole pilot holes are about the axis for axis symmetry of coaxial positioning pin;
Second technique component is a top iron, and the anvil face of this top iron has the via hole at coupling airtight plate nut sealing top, and the anvil face part about this via hole symmetry covers two corresponding satellite holes;
3rd technique component, comprise one for passing described screw hole with the pretension bolt connecting airtight plate nut and the axial positioning sleeve be placed on this pretension bolt screw rod, this axial positioning sleeve is positioned at the side, pretension bolt bolt head place of covering; And
4th technique component, for working face has the riveting gun head in axial location hole, wherein axial location hole is directed at described axial positioning sleeve, and working face covers two satellite holes;
Wherein, the described face that first technique component is being provided with coaxial positioning pin is configured with neonychium;
Described top iron has three anvil faces, and wherein a pair anvil face is relatively parallel, and an anvil face of remaininging is orthogonal with two parallel anvil faces;
Two via holes corresponding to orthogonal two anvil faces are communicated with the U-lag being formed as pushing up iron one termination.
2. Boeing according to claim 1 airtight plate nut mounting process equipment, is characterized in that, described neonychium gluing is mounted on corresponding surface.
3. Boeing according to claim 1 and 2 airtight plate nut mounting process equipment, is characterized in that, the described side that cuboid block is being the end with the side being provided with coaxial positioning pin is provided with leader.
4. the airtight plate nut mounting process of Boeing, is characterized in that, comprise the following steps:
1) use positioning tool set screw hole, the positioning tool of coupling is by being positioned screw hole with the bearing pin of described screw hole shaft hole matching, and positioning tool has the pilot hole mating airtight plate nut satellite hole;
2) lead plug satellite hole, compresses positioning tool in far-end covering, ensures that location is reliable, is directed to a satellite hole pore-forming on covering, then to another satellite hole pore-forming with a satellite guidance hole;
3) beat counterbore, the assembling of coupling rivet, beats counterbore to satellite hole;
4) airtight plate nut is located, airtight plate nut is in place in far-end covering side, then use a pretension bolt to connect described airtight plate nut by screw hole, pretension bolt described in pretension in near-end covering side, the seat side end face of airtight plate nut and far-end covering are fitted; Wherein axial positioning sleeve is equipped with in the bolt head side of pretension bolt;
5) riveter nail, mate two rivets in two satellite holes, two rivet technique heads are in near-end covering side, formed anvil face holding two rivet striding across airtight plate nut sealing top in far-end covering side by top iron, and in near-end covering side, carry out shaping by the riveting gun head being directed at described axial positioning sleeve to the two rivet other ends;
6) pretension bolt is removed.
5. the airtight plate nut mounting process of Boeing according to claim 4, is characterized in that, in step 4), before installing pretension bolt, rivet correspondence is inserted airtight plate nut rivet hole and corresponding satellite hole.
6. the airtight plate nut mounting process of Boeing according to claim 4, is characterized in that, in step 1), needs to install additional the rubber protection pad that hardness is less than covering between positioning tool and covering.
7. the airtight plate nut mounting process of Boeing according to claim 4, is characterized in that, described pretension bolt adopts torque wrench when pretension, and applied force is 30LB.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310307889.3A CN103386600B (en) | 2013-07-22 | 2013-07-22 | Boeing airtight plate nut mounting process instrument and supplies |
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| CN201310307889.3A CN103386600B (en) | 2013-07-22 | 2013-07-22 | Boeing airtight plate nut mounting process instrument and supplies |
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| CN103386600B true CN103386600B (en) | 2015-09-02 |
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| CN202317161U (en) * | 2011-11-18 | 2012-07-11 | 哈尔滨飞机工业集团有限责任公司 | Adjustable nut rivet drilling guide tool |
| CN202516998U (en) * | 2012-03-31 | 2012-11-07 | 哈尔滨飞机工业集团有限责任公司 | Multifunctional integrated ejecting iron |
| CN202804059U (en) * | 2012-09-26 | 2013-03-20 | 北京航天新风机械设备有限责任公司 | Supporting plate nut riveting tool |
| CN203343705U (en) * | 2013-07-22 | 2013-12-18 | 山东太古飞机工程有限公司 | Boeing aircraft airtight support plate nut installation process device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103386600A (en) | 2013-11-13 |
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