Torque testing is an important quality-control step in nearly every manufacturing sector. Properly testing rotary parts for torque with handheld or automated gages can prevent everything from un-openable bottle caps to loose fasteners. Or, in a grave example, if GM properly acted on failed rotational torque tests of ignition switches in some of its mid-2000s models, 13 lives would have been saved.
The Vickers and Knoop microhardness testing methods have become invaluable for the testing of a variety of parts, which have what can be referred to as “shallow layer hardness.” Such characteristics as surface hardness, thin cross section, coating hardness, and case depth are measured using the microhardness testing methods. These methods also can be useful for selective testing of particular grains or constituents such as those found in powdered metal parts.
Modern manufacturing relies on consistency, and tolerances are tighter than they’ve ever been. Production capabilities are up to the task, and CMM systems help ensure that completed or in-process parts are within tolerance. The real challenge comes when anything goes wrong.
In order to help us better understand supply and demand, economists have placed the things we buy into different categories. One such category is a positional good, described by Dr. Sheldon Cooper as “an economic concept in which an object is only valued by the possessor because it’s not possessed by others.”
Organizations have always been faced with making sure that they have the knowledge to carry out the work of the company. Sometimes referred to as “tribal knowledge,” organizations are frequently challenged with the obstacle that there is knowledge within the company that is not passed on or only available to one or a few people. This lack of knowledge could lead to ineffective performance of the quality management system.
Any article on dimensional measurement will usually get around to micrometers in one form or another. This series on bore measurement is no exception even though I am only offering a brief look at the application.
Work holding fixtures for inspection devices have evolved over time and now have become, in some cases, as complex as the parts they are designed to hold. There was a day when some 1-2-3 blocks, knee blocks, double-sided tape and hot glue were all you needed to fixture parts for measurement on a coordinate measuring machine (CMM).