TechDraw "Указать диаметр"

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This page is a translated version of the page TechDraw DiameterDimension and the translation is 59% complete.
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TechDraw DiameterDimension.svg Указать диаметр

Системное название
TechDraw_DiameterDimension
Расположение в меню
TechDraw → Размеры → Указать диаметр
Верстаки
TechDraw
Быстрые клавиши
Нет
Представлено в версии
-
См. также
Указать радиус

Описание

The Diameter Dimension tool adds a diameter dimension to a View. The dimension may be applied to any circular in the drawing. The distance will initially be the projected distance (ie as shown on the drawing), but this may be changed to the actual 3D distance using the TechDraw LinkDimension.svg TechDraw LinkDimension tool.

TechDraw Dimension Diameter example.png

Measuring a circle, indicating the diameter

Применение

  1. Select a circular edge in the drawing. (Note some arcs which appear to be circular are actually ellipses or BSplines. You cannot make a diameter dimension in these cases)
  2. Press the TechDraw DiameterDimension.svg Diameter Dimension button
  3. A dimension will be added to the View. The dimension may be dragged to the desired position.
  4. If needed, add tolerances as described in this page.

To change the properties of a dimension object either double-clicking it in the drawing or in the Tree view. This will open the dimension dialog.

Ограничения

Dimension objects are vulnerable to the "topological naming problem". See TechDraw LengthDimension for more information.

Свойства

See TechDraw LengthDimension.

Программирование

См. так же: TechDraw API и Основы составления скриптов FreeCAD.

The Diameter Dimension tool can be used in macros and from the Python console by using the following functions:

dim1 = FreeCAD.ActiveDocument.addObject('TechDraw::DrawViewDimension','Dimension')
dim1.Type = "Diameter"
dim1.References2D=[(view1, 'Edge1')]
rc = page.addView(dim1)