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A material condition in GD&T. Means that a feature of size is at the limit of its size tolerance in the direction that leaves the most material on the part. Thus an internal feature of size (e.g., a hole) at its smallest diameter, or an external feature of size (e.g., a flange) at its biggest thickness. The GD&T symbol for MMC is a circled M.
Example of true position geometric control defined by basic dimensions and datum features. Geometric dimensioning and tolerancing (GD&T) is a system for defining and communicating engineering tolerances via a symbolic language on engineering drawings and computer-generated 3D models that describes a physical object's nominal geometry and the permissible variation thereof.
Run-out has two main forms: [2] Radial run-out is caused by the tool being translated off the machine axis, still parallel. Radial run-out will measure the same all along the machine axis. Axial run-out is caused by the tool or component being at an angle to the axis. Axial run-out causes the tip of the tool or shaft to rotate off-centre ...
The specification containing this symbol is considered as a location tolerance when the specified datum is locking rotational and translation degrees of freedom. The toleranced feature is a surface. Run-out: ↗ : Circular run-out: The nominal toleranced feature is a set of circles. ⌰ Total run-out: The nominal toleranced feature is a plane ...
ASME Y14.5 is a standard published by the American Society of Mechanical Engineers (ASME) to establish rules, symbols, definitions, requirements, defaults, and recommended practices for stating and interpreting geometric dimensioning and tolerancing (GD&T). [1]
The earliest expansion of "TIR" was total indicated run-out and concerned cylindrical or tapered (conical) parts, where "run-out" (noun) refers to any imperfection of form that causes a rotating part such as a shaft to "run out" (verb), that is, to not rotate with perfect smoothness.
Run-out, an inaccuracy of rotating mechanical systems, specifically when a tool or shaft does not rotate exactly in line with the main axis. Run out , a method of dismissal in the sport of cricket. Refusals and runouts , in equestrian sport, an attempt to evade an obstacle.
The ISO standard may have slightly less symbols than what ASME Y14.5 has, but ISO has the same basic content from what I understand. There seems to be several ISO documents for GD&T. It appears ISO split it up into several different sections from datums to runout. Purchasing them all may cost over $1000.