Quality 101

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Shaft-type parts can be found in just about every industry, from screws, medical needles, engines, and injectors, to aerospace and power sports. Shafts help the world go.

In mass-production industries, it has been realized that Product Design (PD) departments and Manufacturing Engineering (ME) departments under the same organization show quite different interests in the same product line.

While John Goodman and Arnold Schwarzenegger are both 6’2”, few would argue that they have similar body shapes. What this says, simply, is that measuring size does not necessarily say anything about shape.

There was a time, not so long ago, when everyone knew that “in-process” gaging meant installing a jump-on gage on a grinder to tell the control when the workpiece was at size.

Working thread plug gages are the fixed limit functional gages used to inspect product threads on a pass/fail basis.

In colorimetric applications, color is measured objectively; therefore, visual color perception should be simulated as precisely as possible with the color measurement systems used.

The use of the go/no-go fixed limit gage is considered one of the simplest forms of pass/fail attribute inspection.

Optical inspection is vital to quality control in manufacturing, and in breaking down the meaning behind the words, it’s easy to see why.

In quality assurance, color measurement and spectrophotometry are essential in determining a product’s color consistency and accuracy.

Most of the time form measurement looks at basic geometrical shapes: how round something is, how straight or even how flat it is.