A new automated production system for installation of Lightweight Groove Proportioned (LGP) and Hi-Lock bolts in wing panels has been implemented in the Boeing 737 wing manufacturing facility in Renton, Washington. The system inserts LGP and Hi-Lok bolts into interference holes using a ball screw mechanical squeeze process supported by a back side rod-locked pneumatic clamp cylinder. Collars are fed and loaded onto a swage die retaining pin, and swaging is performed through ball screw mechanical squeeze. Offset and straight collar tools allow the machine to access 99.9% of fasteners in 3/16″, ¼″ and 5/16″ diameters. Collar stripping forces are resolved using a dynamic ram inertial technique that reduces the pull on the work piece. Titanium TN nuts are fed and loaded into a socket with a retaining spring, and installed on Hi-Loks Hi-Lok with a Bosch right angle nut runner. Bolt installation and collar swage heights and loads, as well as nut torque values are captured and logged for future reference.
An Automated Production Fastening System for LGP and Hi-Lok Titanium Bolts for the Boeing 737 Wing Panel Assembly Line
Sae Technical Papers
SAE 2015 AeroTech Congress & Exhibition ; 2015
2015-09-15
Aufsatz (Konferenz)
Englisch
Engine cylinders , Production , Fasteners , Titanium , Automation , Bolts , Screws , Fastening
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