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Cutting plane lines which show where the cutting plane passes through the object, represent the edge view of the cutting plane and are drawn in the view(s) adjacent to the section view. Two types of lines are acceptable for cutting plane lines in multiview drawings.
- General Principles
- Section Lines and Symbols
- Cutting Planes
- Main Principles of Placement of Sectional Views
A sectional view represents the part of an object remaining after a portion is assumed to have been cut and removed.The exposed cut surface is then indicated by section lines.Hidden features behind the cutting plane are omitted, unless required for dimensioning or for definition of the part.Section lines, or hatching, that represent the cut surface usually consist of thin parallel lines, as shown below, drawn at an angle of approximately 45° to the principal edges or axes of the part. For most purposes, the general use symbol of cast iron is used. When it is desired to indicate differences in materials, for example on assembly drawing...
Cutting plane lines which show where the cutting plane passes through the object, represent the edge viewof the cutting plane and are drawn in the view(s) adjacent to the section view. Here the cutting plane is drawn as an edge in the top view, which is adjacent to the sectioned front view. This is a frontal cutting plane. Lines of sight should alw...
Whenever practicable, and except for revolved sections, you should project sectional views perpendicular to the cutting plane and place it in the normal position for third angle projection.You should never show the views in first angle projected position on a third angle projection drawing.When the preferred placement is not practical you may remove the sectional view to some other convenient position on the drawing, but it must be clearly identified, usually by two capital letters,...Normally, you should not change orientation of the view, but if this becomes necessary, you must state the number of degrees through which it is revolved.Visible surfaces and edges representing changes of planes that are behind the cutting plane are drawn in a section view. Section lined areas are bounded by visible lines and never by hidden...
Cutting Plane Method to see piercing points. Information about the visibility in a view will be collected in any adjacent view. The corner or edge fartherest from the observer will usually be hidden if it lies within the outline of the view. The corner or edge of the object nearest to the observer will be visible.
The line of intersection is determined using auxiliary views and cutting planes. These points will lie on the required line of intersection. They are more easily located from the view in which the lateral surface of the second solid appears edgewise (i.e. as a line).
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Jun 28, 2022 · A visible line, for example, is used to show the edges (or “outline”) of an object and to make it stand out for easy reading. This line is made thick and dark. On the other hand, a center line, which locates the precise center of a hole or shaft, is drawn thin and made with long and short dashes.
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cutting plane appears as an edge in the top view and is normal in the front view; therefore, it is a frontal cutting plane or Vertical Section Plane. The front half of the object is "removed" and the front view is drawn in section.
