Dimensioning and Tolerancing Handbook

Part 1: History/Lessons Learned

Chapter List

Chapter 1: Quality Thrust
Chapter 2: Dimensional Management
Chapter 3: Tolerancing Optimization Strategies

Ron Randall
Ron Randall & Associates, Inc.
Dallas, Texas

Ron Randall is an independent consultant, and an associate of the Six Sigma Academy, specializing in applying the principles of Six Sigma quality. Since the 1980s, Ron has applied Statistical Process Control and Design of Experiments principles to engineering and manufacturing at Texas Instruments Defense Systems and Electronics Group. While at Texas Instruments, he served as chairman of the Statistical Process Control Council, a Six Sigma Champion, Six Sigma Master Black Belt, and a Senior Member of the Technical Staff. His graduate work has been in engineering and statistics with study at SMU, the University of Tennessee at Knoxville, and NYU s Stern School of Business under Dr. W.Edwards Deming. Ron is a Registered Professional Engineer in Texas, a Senior Member of the American Society for Quality, and a Certified Quality Engineer. Ron served two terms on the Board of Examiners for the Malcolm Baldrige National Quality Award.

1.1 Meaning of Quality

What do we mean by the word quality? The word quality has multiple meanings. Some very important meanings are:

  • Quality consists of those product features that meet the needs of customers and thereby provide product satisfaction.

  • Quality consists of freedom from deficiencies, or in other words, absence of defects. (Reference 5)

Most corporations manage the business by understanding the financials. They spend significant resources on financial planning, financial control, and financial improvement.

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