Production Engineering Measures Program Manufacturing Methods and Technology. Precision Forging of Spiral Bevel Gears.

摘要

This program consisted of the production of precision hot forged spiral bevel helicoptor gear sets using methods previously developed under AVSCOM sponsorship. Forging was performed at TRW on a mechanical press using two forging blows,performed in rapid succession with reheating,to obtain forgings with integrally forged tooth forms. The geometry of the as-forged tooth forms were controlled such that the resultant machining stock envelope was suitable for carburising and finish grinding. The parts were finished and then shipped to Boeing-Vertol Co. for qualification testing. The objective of this program is to qualify a process which will produce gear blanks which are metallurgically superior and cheaper to finish than blanks made by conventional methods. (Author)