Accession Number : AD0618551

Title :   AN INVESTIGATION INTO THE STABILITY OF PROCESS CAPABILITY FOR JOB LOT MANUFACTURING.

Descriptive Note : Master's thesis,

Corporate Author : VIRGINIA POLYTECHNIC INST BLACKSBURG

Personal Author(s) : Steckler,Richard Hugh

Report Date : JUL 1965

Pagination or Media Count : 127

Abstract : The study was made to collect the data and information necessary to make a decision about the stability of process capability in the generation of external lengths on engine lathes. Each set of data is obtained so that a statistical test can determine the significant contribution of operator skill level, machine condition, type of tolerance specified, and the nominal dimension in the range between 0.020 in to 0.522 in. All other factors in the processes will be held constant. The objective was to draw a statistical conclusion about the stability of the process capability in the range between 0.020 in to 0.522 in. A conclusion was also made as to the contribution of operator, machine, and type of tolerance to the inherent variation of the process.

Descriptors :   (*QUALITY CONTROL, INDUSTRIAL PRODUCTION), (*MACHINING, QUALITY CONTROL), PRODUCTION CONTROL, STATISTICAL TESTS, STABILITY, OPERATORS(PERSONNEL), PERFORMANCE(HUMAN), TOLERANCES(MECHANICS), LATHES

Distribution Statement : APPROVED FOR PUBLIC RELEASE