VARFILE

REFERENCE Method

VARFILE method

The VARFILE file for variable tolerancing contains the upper and lower tolerance curves for variable profile evaluation.

The tolerances are defined as sets of 2D points. Each section that is toleranced defines two curves: a lower tolerance and an upper tolerance. You can define the curves in either order.

File Name

The name of the Variable Tolerance file should be the same as the Nominal file, but use .VTL as the extension. For example, if the name of the Nominal file is MyBlade.NOM, then the name of the variable Tolerance file should be MyBlade.VTL. Both files should be in the same folder.

File Format

The format of each section in the file looks like the following:

SECTION SECTNAME N1 N2 (N1 and N2 are the number of points that define the two tolerance curves)
X Y (point 1 of first tolerance curve)
X Y (point 2 of first tolerance curve)
…
X Y (point N1 of first tolerance curve)
X Y (point 1 of second tolerance curve)
X Y (point 2 of second tolerance curve)
…
X Y (point N2 of second tolerance curve)

Example

SECTION A-A 800 800

-3.9853,2.1526

-4.1275,2.0513

-4.2696,1.9497

-4.4115,1.8479

-4.5531,1.7458

-4.6946,1.6435

-4.8359,1.5409

-4.9771,1.4380

…

Calculations