Next Generation Composite Wing Drilling Machine for Vertical Builds

Peck, J. A.; Massey, Kurt

doi:10.4271/2011-01-2613

Cited by 3 publications

(4 citation statements)

References 5 publications

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“…The ATS allows much greater positional accuracy and repeatability on each hole because all machine axes moves and resynchronization processes are not needed [3]. These increases in positional accuracy allow a reduction in material removal during the reaming process.…”

Section: Technical Benefitsmentioning

confidence: 99%

“…The ATS effectively removes 200 lbs. from the process head by allowing use of a 173mm spindle cartridge opposed to a 205mm cartridge [3]. This reduction in material removal shortens the reaming cycle time by half [4].…”

Section: Technical Benefitsmentioning

confidence: 99%

“…During small diameter drilling on the aircraft panel, the ATS is able to change between different diameter cutters. Process dependent tooling is matched across the most common hole diameters, maximizing overall cycle efficiency [3].…”

Section: Multi-diameter Drilling Benefitsmentioning

confidence: 99%

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Utilizing an In-Process Automatic Tool Change for Drilling and Reaming Large Diameter Holes

Ehinger¹

2011

SAE Int. J. Aerosp.

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A drill/ream cycle is necessary to produce high quality, large diameter holes in carbon-titanium stacks. Manual tool changes and traditional automatic tool changers limit hole-tohole cycle times and hole quality. An in-process tool changer, mounted directly on the machine head, replaces a cutting tool with a reaming tool while clamp-up is maintained on the aircraft panel. By reducing or eliminating operator intervention, machine-axis moves, and optical resynchronization, an in-process automatic tool changer shortens cycle time, improves hole quality, and increases positional accuracy of holes. Automating this process also reduces risk of harm to the operator and aircraft structure.

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Section: Technical Benefitsmentioning

confidence: 99%

Section: Technical Benefitsmentioning

confidence: 99%

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Utilizing an In-Process Automatic Tool Change for Drilling and Reaming Large Diameter Holes

Ehinger¹

2011

SAE Int. J. Aerosp.

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“…This fastener system was developed to automate the temporary fastening requirement for the assembly of XAC's new C919 aircraft wing and is used on the Lean Technology Drilling (LTD) machine. [1] The LTD machine accurately drills holes, inspects the drilled holes, and installs temporary fasteners in the wing's upper and lower panel in a vertical build major assembly jig. By using these temporary fasteners, the LTD machine is able to drill full size holes, install a fastener, and keep the panel clamped and located as it continues on to further holes.…”

Section: Introductionmentioning

confidence: 99%

Automatic Temporary Fastener Installation System for Wingbox Assembly

Pritz

Etzel

Zheng³

2016

SAE Int. J. Aerosp.

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The automation cycle time of wing assembly can be shortened by the automated installation of single-sided temporary fasteners to provide temporary part clamping and doweling during panel drilling. Feeding these fasteners poses problems due to their complexity in design and overall heavy weight. In the past, Electroimpact has remotely fed these fasteners by blowing them through pneumatic tubing. This technique has resulted in occasional damage to fasteners during delivery and a complex feed system that requires frequent maintenance. Due to these issues, Electroimpact has developed a new fully automated single-sided temporary fastening system for installation of the LISI Clampberry fasteners in wing panels for the C919 wing factory in Yanliang, China. The feed system stores fasteners in gravity-fed cartridges on the end effector near the point of installation. The cartridge placement at the end effector eliminates the need for pneumatic feed tubes in addition to limiting input sensors to cartridge identification only. By reducing pneumatics, sensors, and controls, less maintenance is expected for the fastener storage system. When a fastener is requested by the machine, a pick and place mechanism grabs the correct fastener from the cartridge and loads the fastener into the fastener inserter. The fastener inserter then installs the fastener into the wing panel using a servo nut-runner to wind the fastener until the grippers pull the stack together with a specified preload. Diameter, grip length, and fastener integrity are all checked during the feed process. Extensive prototyping yielded results of 99.9% reliability across the spectrum of fasteners. Production hardware for this system has also passed Preliminary Acceptance Testing with Xi'an Aircraft Industry (Group) Company (XAC) and is currently installed and ready to start production.

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High Volume Automated Spar Assembly Line (SAL)

Calawa

Smith

2017

SAE Technical Paper Series

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Next Generation Composite Wing Drilling Machine for Vertical Builds

Cited by 3 publications

References 5 publications

Utilizing an In-Process Automatic Tool Change for Drilling and Reaming Large Diameter Holes

Utilizing an In-Process Automatic Tool Change for Drilling and Reaming Large Diameter Holes

Automatic Temporary Fastener Installation System for Wingbox Assembly

High Volume Automated Spar Assembly Line (SAL)

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