Characterization of Typical Production Hole Quality and Inspection Techniques. Volume 1. Program Summary
Abstract
Survey and on-site evaluation of fastener hole production processes were conducted to assess the characteristics of fastener holes as they are now being produced in industry. Details of a general written survey and the response by Industry are presented. Design of the experimental work being performed on the program is described. Major emphasis of the program was on personnel tooling process and cost control methods as characterized by the size, shape, surface finish, surface texture and alignment. A unique, automated hole measurement system based on air gaging and analysis by programmable machine processing was used to characterize dimensional and shape parameters. An example of data acquisition and analysis is included. Results show that design engineering tolerances are generally met by current process applications. Inspection methods are inadequate in identifying individual discrepancies in hole characteristics, but aid in process control to assure conformance to design criteria. Tooling, stack clamp up and hole to hole spacing were identified as the most dominant variables in current industry production.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1979
- Accession Number
- ADB053784
Entities
People
- Russell L. Mccord
- Ward D. Rummel
Organizations
- Martin Marietta