HEIDENHAIN IK 5294 - Manual (Page 167)

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6
Tolerancing
Applying tolerances to features
Tolerances are applied using tolerance entry screens. Tolerance
entry screens are displayed using on-screen Tolerance menus or
the Tolerance toolbar.
Tolerance screens
While most screens have some unique characterists that support
the entry of specific types of tolerance data, tolerance entry screens
also have many similarities. A few important similarities include
the entry options for position, size and nominal values.
Tolerances of position can be entered in cartesian or polar coordinate. The position data type can be
toggled between cartesian and polar coordinates by clicking a coordinate button.
Arc and circle tolerances of size can be entered as a radius or diameter. The size data type can be toggled
between radius and diameter by clicking a radius or diameter button.
Nominal value tolerances can be entered as +/- nominal ranges or as limits. The nominal value type can be
toggled between +/- nominal ranges and nominal limits by clicking a Nom or Limit button.
The individual tolerance screens for tolerance types are described in the Tolerance Types section later in
this chapter.
Applying Tolerances
Bi-directional Tolerance Entry screen
Clicking a coordinate button... toggles the coordinate system
Clicking a radius or diameter button... toggles the size data type
Clicking a nominal value button... toggles the nominal value type
6 Tolerancing OE.indd 3 5/9/2005 9:51:38 AM