Automated/mechanized drilling and countersinking of by George Nicholas Bullen

By George Nicholas Bullen

Sleek airplane production contains drilling and countersinking millions to thousands of holes. Doing this paintings via hand debts for sixty five% of the price of airframe meeting, eighty five% of the standard concerns, and eighty% of the misplaced time because of injuries.

The concentration of this publication is on automating the method of drilling and countersinking holes in the course of airframe production. on account that this is often the world of maximum go back on funding for airframe manufacturers, the e-book presents a stepped method for comparing attainable components for employing automation and a close description of the method for selecting, buying, and transitioning the correct equipment for fulfillment. It additionally offers a imaginative and prescient for a ten- to 15-year destiny nation of airframe manufacture. Read more...

summary: sleek airplane production contains drilling and countersinking millions to hundreds of thousands of holes. Doing this paintings by way of hand bills for sixty five% of the price of airframe meeting, eighty five% of the standard matters, and eighty% of the misplaced time because of injuries.

The concentration of this booklet is on automating the method of drilling and countersinking holes in the course of airframe production. considering the fact that this can be the world of maximum go back on funding for airframe manufacturers, the ebook presents a stepped method for comparing attainable parts for employing automation and a close description of the method for selecting, buying, and transitioning the ideal equipment for fulfillment. It additionally presents a imaginative and prescient for a ten- to 15-year destiny kingdom of airframe manufacture

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Extra info for Automated/mechanized drilling and countersinking of airframes

Sample text

Another example is a defect in tubes, components, systems, structure, or electrical wiring that is installed internally and covered by the skin. When a drill strikes one of these internal pieces, it causes an impact defect called a drill-start. After the skin is removed, additional inspection is performed to see if drill-starts have occurred. Drill-starts can cause the impacted tube, component, system, structure, or electrical wiring to be replaced. At a minimum, the corrective action involves repair.

The greatest opportunity for cost reduction is resident in the unchanged processes and activities associated with the assembly of the airframe. Therefore, the identification of the cost contributors to determine the opportunity for cost reduction is focused on the assembly center. The major process steps that contribute to the collective cost of the assembly are part placement, fastener preparation (includes D/C), stuffing (installing internal components), and fastening. Further breakdown of direct labor hours to assemble the airframe reveals that 65% of the hours to assemble the airframe reside in the D/C of holes.

There are mature assembly lines and opportunities within fully functioning lines with a minimum or no disruption to the existing line flow. There are also opportunities to integrate automation into the plan for new airframe assembly lines. This chapter will also provide considerations and information to assess the extent to which a new airframe assembly line should introduce automation and how to determine what impact automation will have on non-technical issues such as geopolitical considerations and labor.

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