Guide to Quality Control"The explanations of QC techniques and the practice problems which appeared in the magazine Quality control at the factory, during 1967, have been brought together in this book.". |
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Page 32
... defects and on which item they occurred . The percentages for each reason should ... items inspected Factory : Section : Inspector's name : Lot no .: Order no ... Defective item check sheet the major defect suddenly declines , you know ...
... defects and on which item they occurred . The percentages for each reason should ... items inspected Factory : Section : Inspector's name : Lot no .: Order no ... Defective item check sheet the major defect suddenly declines , you know ...
Page 42
... items defectives Defective Per cent defective Caulking 198 9.1 % 47.6 Fitting 25 1.2 % 6.0 Connecting 103 4.8 % 24.7 Torque 18 0.8 % 4.3 Gapping 72 3.3 % 17.3 Total 416 19.2 % 99.9 Table 5.1 gives data on defectives from a certain ...
... items defectives Defective Per cent defective Caulking 198 9.1 % 47.6 Fitting 25 1.2 % 6.0 Connecting 103 4.8 % 24.7 Torque 18 0.8 % 4.3 Gapping 72 3.3 % 17.3 Total 416 19.2 % 99.9 Table 5.1 gives data on defectives from a certain ...
Page 43
... defective item is shown by the line graph . This type of graph is called a Pareto Diagram . A Pareto diagram , such as this , indicates which problem we should solve first in eliminating defects and improving the operation . According ...
... defective item is shown by the line graph . This type of graph is called a Pareto Diagram . A Pareto diagram , such as this , indicates which problem we should solve first in eliminating defects and improving the operation . According ...
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Common terms and phrases
abnormality Ac Re Ac action bar graph Base panel breaks basis binomial probability paper cause cause-and-effect diagram cent defective central line chapter check sheet Coil plant collect data Condenser control limit lines correlation data sheet defective items determine dispersion Electronics subsidiary example factory fraction defective frequency distribution table HH HH HH histogram Improper rotation Improper torque improvement increments inspection level Kaoru Ishikawa line graph Lower control limit machine mean value measurement median line method Neon tube normal inspection number of defectives number of points obtained Pareto diagram pie charts Pilot lamp plot pn chart Poor caulking Poor gapping production process Purchasing section quality control random sampling relationship scatter diagram shown in figure shows single sampling inspection Six-spool trimmer standard deviation Step stratified Sub-group number Surface scratches total number Upper control limit Vacuum tube wobble workers x-R control charts