In this Question Line video, Jason walks through a drawing that includes a position control on a pattern of holes (bolt circle), explaining what the feature control frame is and is not controlling.
In this Question Line video, Jason walks through an assembly drawing to explain the scenario where a feature being controlled by position must have a reference size dimension rather than a tolerance on the size of the feature.
In this Question Line video, Jason discusses a composite feature control frame controlling profile tolerance. He walks through through the user submitted examples to explain the controls of each frame.
In this Question Line video, Jason responds to a question regarding radial hole patterns as datum features. He discusses how to set up the datum reference frame, how the datum reference frame controls degrees of freedom, and how to apply the Maximum Material Boundary.
In this Question Line video, Jason reviews cylindricity and discusses how it is measured.
In this Question Line Video, Jason gives a high-level overview of how polar probes and TIR checkers are used to inspect circularity or cylindricity.
In this question line video, Jason explains how to control radial position with a composite tolerance by walking through an example of a pattern of holes on a cylinder.
When a hole is being controlled with position, the primary datum is often the surface that the hole originates from and the secondary and tertiary datums are perpendicular or parallel to the primary datum. However, this is not always the case. In this video, Jason walks through an example drawing to show us how to inspect a hole that is at an angle with respect to the primary datum.
The position symbol is one of the most useful symbols in GD&T - but did you realize that you can use it to allow more tolerance in one direction and less in another? In this video, Jason explains how to achieve bidirectional position control through the use of a Multiple Single Segment Feature Control Frame.
V-Blocks are popular tools used with manual inspections, but come with a unique pitfall that can impact the accuracy of measurements. In this video, Jason walks through the potential issues associated with using V-Blocks and how they can affect measurements of circularity and runout.
Coordinate Measuring Machines (CMMs) are essential tools for obtaining precise measurements. However, to ensure accurate measurements, it is crucial to understand how to use them correctly. In this video, Jason explains the importance of recognizing and utilizing appropriate vectors when inspecting a profile or irregular surface with a CMM probe.
In this series, we will explore the most common errors that we see in implementing GD&T on engineering prints, and provide you with practical solutions to avoiding these pitfalls.
Geometric Dimensioning and Tolerancing, and the concept of “True Position,” originated due to a rejection of functional parts as a result of coordinate dimensioning. Let’s look at a simple assembly to illustrate why this is true, and how GD&T Position takes care of this problem.
The manufacturing industry is facing a workforce shortage, resulting in a loss of tribal knowledge and a widening skills gap. Discover how manufacturers are addressing this through employee training programs - and how GD&T Basics can help your team gain a comprehensive understanding of how to accurately interpret and analyze engineering prints, ensure compliance with industry drawing standards, and acquire the skills needed for effective inspection practices.
In this Question Line Video, Brandon explains Rule #1 of GD&T (the Envelope Principle) and how Go/No-Go gages are used to verify that Rule #1 is met for a feature of size.
As our Training Design Engineer at GD&T Basics, Jason Richter is responsible for creating and maintaining lessons and visual content for our courses and YouTube page, as well as hosting our GD&T Public Training Seminars.
In this Question Line Video, Jason discusses datum preferences for hollow cylindrical parts, where both the ID and OD of the part are mating features.
Jason discusses form controls on a per unit basis using the example of controlling flatness on a large surface in this Question Line Video.