The CAD Alignment method is to establish a minimum of 6 points on the model then measure these same points on the part.

In previous articles, we saw that all geometric tolerance specifications control a particular component of the considered feature and define a tolerance zone.

In the previous article, we saw that all geometric tolerance specifications control a particular component of the considered feature.

Wilcox Associates Inc., a software company owned by Hexagon Metrology, has introduced new statistical software package, DATAPAGE + Desktop Version 4.1 (DP+).

A major advantage of the geometric tolerancing system is the ability to clearly define exactly what is to be controlled.  But determining exactly what geometric entity a feature control frame applies to can involve several different pieces of information.

In this article I will talk about 5 axes measurement. Until recently most CMMs measured using a combination of their X, Y and Z axes. This meant that the probe head remained static during the touch process.

Recently I provided a one day customized GD&T training to one of my customers, who’s been in pump manufacturing business for long time. Their drawings are very old school because you can tell from all those GD&T symbols, e.g. datum letter is before tolerance in FCF, etc..

The use of marked sets allows the programmer great flexibility in creating parametric programs that can be used for parts at different stages in the production cycle. As an example, a program can be created that will measure a part after the first machining operation, only the second machining operation, or measure the part as a completed part ready for shipment to the customer.

In previous articles, we had explored the application of basic true position using Zeiss Calypso software. We’ve covered basic setup of the characteristic and applying material condition modifiers. In this article, we shall discuss evaluating multiple features at once using true position.

The High Level section of DMIS is the part of the language that most closely resembles other computer languages. It includes statements that allow the programmer to declare and use variables, perform calculations, control program flow, etc.