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Tag: Datum Reference Frame

Positional Control of X, Y, and Z

by Crystal Bemis on December 2, 2024.

In this Question Line video, Jason discusses the positional control of the X, Y, and Z translations for a cylindrical post on the submitted drawing. He defines the datum reference frame and zero point of the part and explains why the feature control frame in question is essential to constraining where the cylinder exists vertically.

The Importance of Qualifying Datums

by Crystal Bemis on November 4, 2024.

In this Question Line video, Jason explains how datums are qualified and the difference between how CMMs and physical datum simulators set up the datum reference frame for a manufactured part.

How to Find Zero

by Crystal Bemis on October 21, 2024.

In this video, Jason shows how to find the zero, or origin, for a given feature control frame. He walks through an example drawing that utilizes a single datum reference frame, describing how the datum reference frame fully constrains the part, noting that more complex parts may utilize multiple datum reference frames, resulting in multiple origin points.

Datums for Castings

by Crystal Bemis on September 9, 2024.

In this Question Line video, Jason discusses how datum targets, datum reference frames, and multiple datum structures can be of assistance in casting drawings.