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Technical Paper

Assembly Fixture for 787 Section 11, Heavy Composite Assembly

2007-09-17
2007-01-3869
The 787 Section 11 Assembly Cell is a combination fixed post and moving frame holding and indexing system, designed to determinately build the 787 Section 11 Wing box. The retractable overhead frame allows maximum clearance for safer and faster loading and unloading of component parts, as well as completed wingbody sections. Additionally, each index is also retractable allowing maximum fastener access inside the jig.
Technical Paper

Central Control of an Automated Riveting Machine and Robot Part Position with a Single CNC

2022-03-08
2022-01-0014
There exists a demand in the aerospace industry for highly configurable and flexible automated riveting cells to manufacture small to medium sized panels of complex geometries. To meet this demand Electroimpact has developed a manufacturing system consisting of a stationary Electro-squeeze C-frame riveter, coupled with a robot part positioner to present the component to the process head tool point. The C-frame can install a wide range of aerospace rivets and perform specialist functions including backside countersinking operations, giving potential for double flush fastening. The geometric limitations and high implementation costs of large cartesian based positioning barges or fixed jig tooling and moving gantry riveters are avoided when exchanged for a robot part positioner.
Technical Paper

Narrow Fixture Improves One-Up Panel Assembly

2022-03-08
2022-01-0015
The use of a narrow profile posts or Skinny Fixture increases build speed and flexibility while improving quality of aluminum aircraft panels fastened in one-up assembly cells. Aluminum aircraft panels are made up of an outer skin and a series of stringers. The components must be held in accurate relative positions while preliminary fasteners are installed. By using narrow fixture posts in conjunction with deep drop stringer side machine tools, the fastening machine can apply fasteners at tighter initial spacing. The spacing is gained by providing clearances that allows the centerline of the fastening system to work closer to the post than previously achieved with deep fixture posts and short stringer side tooling. At one time the standard process was to hold the parts in manual tack cells and after tacking the panels are moved to a separate automated fastening cell. One-up assembly fixtures improve the process by reducing manual processes while minimizing component handling.
Technical Paper

Benefits of Concurrent Engineering

1993-09-01
931765
For seven years Electroimpact, Inc. has been providing manufacturing equipment to the aerospace assembly business. Our industry is not partial toward working with small companies such as Electroimpact. But we fill a niche. The niche which we fill is in the area of new processes. We have developed new processes which have made inroads into the industry. This paper will review a number of case studies for the implementation of new manufacturing technology in the aerospace industry. In all of these cases motivation for the implementation of new technology is the driving force and concurrent engineering is the vehicle for successful implementation. Although this review is only cursory it can provide a reference to help you make further inquiries.
Technical Paper

Implementation of the HH550 Electromagnetic Riveter and Multi-Axis Manlift for Wing Panel Pickup

1996-10-01
961883
A new wing panel riveting cell capable of replacing tack fasteners and performing small repair jobs has been developed. Using two mobile scissor lift platforms with electromagnetic riveters mounted on each, the operators can access every portion of the wing panel without the use of ladders or platforms. This method minimizes fatigue, allows workers to carry all tools and supplies with them, meets current safety standards and minimizes coldworking of the components.
Technical Paper

Sideways Collar Anvil For Use on A340-600

2005-10-03
2005-01-3300
A new method of installing LGP collars onto titanium lock bolts has been brought into production in the Airbus wing manufacturing facility in Broughton, Wales. The feed system involves transporting the collar down a rectangular cross-sectioned hose, through a rectangular pathway in the machine clamp anvil to the swage die without the use of fingers or grippers. This method allows the reliable feeding the collars without needing to adjust the position of feed fingers or grippers relative to the tool centerline. Also, more than one fastener diameter can be fed through one anvil geometry, requiring only a die change to switch between certain fastener diameters. In our application, offset and straight stringer geometries are accommodated by the same anvil.
Technical Paper

Evaluation of the EMR for Swaging Collars on Advanced Composite Laminates

2005-10-03
2005-01-3299
The Boeing 787 Dreamliner will be the most fuel-efficient airliner in the world when it enters service in 2008. To help achieve this, Boeing will utilize state-of-the-art carbon fiber for primary structures. Advanced manufacturing techniques and processes will be used in the assembly of large composite structures. Electroimpact has proposed a system utilizing the low recoil Low Voltage Electromagnetic Riveter (LVER) to drill and install bolts. A test program was initiated between Boeing Materials Process and Engineering (MP&E) and Electroimpact to validate the LVER process for swaging titanium collars on titanium pins in composite material. This paper details the results of these tests.
Technical Paper

Gantry Horizontal Slug Riveting System

2024-03-05
2024-01-1924
Previously given Paper 09ATC-0232 delivered at the SAE Aerotech conference in Seattle in 2009 reports on the E6000 machine installing slug rivets with the EMR. Paper 2015-01-2491given at the SAE conference in Seattle in 2015 reports on index head rivets being installed with screw driven squeeze process. This paper reports on the screw driven squeeze process installing unheaded slug rivet which is a more complex process. We also report on improvements to the fixture automation.
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