ISO 14405-3:2016

Geometrical product specifications (GPS) — Dimensional tolerancing — Part 3: Angular sizes

This part of ISO?14405 establishes the default specification operator for angular size and defines a number of special specification operators for features of angular size: cone (truncated, i.e. frustum, or not), wedge (truncated or not), two opposite straight lines (intersection of a wedge/truncated wedge and a plane perpendicular to the intersection straight line of the two planes of the wedge/truncated wedge, intersection of a cone/frustum and a plane containing the axis of revolution of the cone/frustum). See Figure?1 and Figure?2.

This part of ISO?14405 also defines the specification modifiers and the drawing indications for these angular sizes.

This part of ISO?14405 covers the following angular sizes:

—??? local angular size:

—??? angular size between two lines;

—??? portion angular size;

—??? global angular size:

—??? direct global angular size:

—??? least squares angular size;

—??? minimax angular size;

—??? rank order angular size/indirect global angular size:

—??? maximum angular size;

—??? minimum angular size;

—??? average angular size;

—??? range of angular sizes;

—??? mid-range angular size;

—??? median angular size;

—??? standard deviation of angular size.

This part of ISO?14405 defines the meaning of tolerances of angular sizes indicated as

—??? + and/or – limit deviations, e.g. 0°/-0,5°, or

—??? indicated with upper limit of size (ULS) and/or lower limit of size (LLS), e.g. 35° max. or 15° min., 34°/36°,

—??? with or without modifiers.

This part of ISO?14405 provides a set of tools to express several types of angular size characteristics. It does not give any information on the relationship between a function or a use and an angular size characteristic.

Edition	2016
Standard Part No	3
Published Date	2016
Published By	International Standardization Organisation
Page Count	22