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A precision injection molding company changed the mold temperature and measured the critical dimensions specification 12…
In 1985, a senior engineer from Motorola's Communications Division walked into the CEO's office with a stack of data. Hi…
When GR&R reaches 28%, the first suggestion at the review meeting is usually to "measure each piece twice more and take …
Control chart software defaults to enabling all eight out of control rules, which may seem very "rigorous." However, eac…
A certain automotive parts factory submitted a new project process capability report to the original equipment manufactu…
The IQC of a motor manufacturing company conducts incoming inspection on the motor shaft diameter φ20±0.05. The quality …
Last week, a quality manager told me about an incident over the phone: a batch of bearing holes was fully inspected by I…
Introduction: These 12 Questions Almost Always Appear in Every SPC Training Session After each SPC training, the questio…
1. The Trouble with a Batch: 1 Piece or 8 Defects? In the inspection records of a coating workshop, there was such a lin…
1. Reviewing the Scene: Two Conflicting Numbers A process capability review at a precision stamping factory. On the proc…
A car parts company received a quality agreement from a customer: batches with a nonconforming product rate exceeding 1.…
In the inspection records of a machine processing plant, a part with an outer diameter of 10.048 mm was marked as "confo…