What is GDnT explain with Example

Question

Accepted Answer

GD&T stands for Geometric Dimensioning and Tolerancing, a system used to define and communicate engineering tolerances.

GD&T is a symbolic language used to specify the allowable variations in form, size, orientation, and location of features on a part.
It ensures that parts are manufactured and assembled correctly, leading to better functionality and interchangeability.
GD&T uses various symbols, such as concentricity, perpendicularity, flatness, and position, to define the desired tolerances.
For example, a drawing may specify that a hole should be positioned with a tolerance of ±0.1mm from a reference surface.
GD&T allows engineers to communicate design requirements precisely, reducing ambiguity and improving the overall quality of the product.

Accepted Answer

GDnT is a technical Language for communication between Designer and Manufacturer.

GDnT classified  into 5 Categories

Form Tolerence
Profile Tolerence
Orientation Tolerence
Location Tolerence
Run Out Tolerence

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