ShadowGage is designed to measure features such as diameters, lengths and grooves on the contour of small precision parts, and then automatically separate the acceptable parts from the rejects. Single-camera systems can measure either the profile or top view of the parts, while two-camera systems can measure both views simultaneously.
According to the company, the machines can measure with an accuracy of ±0.0001" at a rate as fast as 7,200 parts/hr. Because the software recognizes the part’s orientation and then executes the appropriate measurements, parts can be loaded onto the machine manually or from a vibratory feeder, without regard to orientation.
Functional gear testing, also known as total radial composite deviation, is a method of looking at the total effect of gear errors. This test method simulates the conditions under which a set of gears is likely to operate as a result of the gears meshing together.
Virtually every machine tool builder lists, as part of a machine's specification, accuracy and repeatability figures. What's generally not given is the method used to arrive at the figures. Though these methods are defined in linear positioning standards, not all builders use the same standards.
Here are some of the tools and techniques for making sure machine tools stay at peak performance levels.