// ROBOTICS AND SMART FACTORIES TERM
GD&T
GD&T stands for Geometric Dimensioning and Tolerancing, which is a standardized system for defining and communicating engineering tolerances. It uses symbols to describe the allowable variation in the form, orientation, and location of part features.
TECHNICAL DEFINITION
Geometric Dimensioning and Tolerancing (GD&T) is an international standard (ASME Y14.5, ISO 1101) for defining and communicating engineering design intent and manufacturing tolerances using a symbolic language to specify the allowable variation in the form, orientation, location, and runout of part features, crucial for functional fit and assembly.
BACKGROUND
Model-based definition (MBD), sometimes called digital product definition (DPD), is the practice of using 3D models within 3D CAD software to define individual components and product assemblies. The types of information included are geometric dimensioning and tolerancing (GD&T), component level materials, assembly level bills of materials, engineering configurations, design intent, etc. By contrast, other methodologies have historically required accompanying use of 2D engineering drawings to provide such details.
READ MORE ON WIKIPEDIASYNONYMS & ALIASES
- Geometric Tolerancing
- Dimensional Tolerancing
- ASME Y14.5
- ISO 1101
USAGE NOTE
GD&T is indispensable for ensuring interchangeability and proper assembly of complex mechanical components.