KOMPAS-3D v23

You can set the scaling ratio for graphic objects and texts. This setting is usually required if the imported document contains a life-size image of a large object (e.g., a bridge), as the maximum length of objects is limited in KOMPAS-3D to 5*107 mm. To set the scaling ratio, use the Scale field on the Properties page.

In DXF and DWG documents you can use millimeters or inches as measurement units. Before importing, you can select the required measurement units in the "Measurement Units" list on the Properties page.

If the imported objects became too large or too small, it may mean that an incorrect scaling ratio or incorrect measurement units were selected. To modify the size of the object, try adjusting one of these parameters (most probably you'll have to adjust the scaling ratio), then import the file again. It is also recommended to open and review the source document in AutoCAD, and check the image size and scale.

You can detect that the image in the source drawing was magnified by a non-standard size of the border or title block; sometimes (if scaling with an integer ratio was used) divisible by one of the standard values. By calculating the ratio of the desired size of these objects to the imported size, you can estimate the scaling ratio to apply when importing the file.

Since we're talking about the sizes of geometric objects acquired using import, please note that in KOMPAS-3D there are objects with sizes independent from the scale. A typical example is a dimension: its properties (arrow length, extension lines offset beyond the dimension line, etc.) are identical in all the views of a drawing, including views with different scale. This type of objects also includes leaders and geometric tolerances.

Dimensions, leaders, geometric tolerances and multilines may be identified as the KOMPAS objects of the corresponding type or may be converted to macro-elements (see Section Importing dimensions, leaders, geometric tolerances, hatches and multilines).

In the first case, geometric parameters of dimensions, leaders and geometric tolerances in the resulting document are defined by settings of this document (e. g., arrow length is 5 mm). Therefore, when importing a life-size image of a bridge, the KOMPAS document may contain the following. When viewing the image in a scale when all the objects fit the screen, small parts of dimensions and leaders (arrows, texts) are not visible. They only become visible under high magnification of the image.

In the second case, the geometric parameters of dimensions, leaders and geometric tolerances in the resulting document are defined by the scale used to import the source DXF or DWG document.

If, for example, the dimensions were imported as dimensions and leaders were imported as macro objects, the resulting objects are likely to have different length of the arrows.