Table of Contents
When an object is cut by a section plane?
When an object is cut by a section plane, parallel to H.P. and perpendicular to V.P., then the sectional view of the object is obtained in top view. For ex – Frustum , which is initially a cone , but it is cut by a section plane, parallel to H.P. and perpendicular to V.P. , top view is obtained.
How are cutting planes section planes drawn?
The line of sight for the section view is perpendicular to the cut surfaces, which means they are drawn true size and shape in the section view. Also, no hidden lines are drawn and all visible surfaces and edges behind the cutting plane are drawn as object lines.
Where a cutting plane line is drawn in drawing?
How cutting plane lines look. Cutting plane lines are thick lines that run through the center of the object that the interior wants to provide an interior view of. Two perpendicular lines with arrows showing in which direction the interior of the object should be viewed are drawn at the end of the line.
What type of line is used to draw cutting planes?
Dimension lines are drawn using continuous thin (narrow) lines (straight or curved). The given type of line in question is used to represent cutting planes.
How is a cutting plane represented?
A cutting plane is represented on a drawing by a cutting plane line. This is a heavy long-short-short-long kind of line terminated with arrows. The arrows in show the direction of view. Once again, here is an graphic example of a cutting plane line and the section that develops from it.
What is Section in drawing?
A section view is a view used on a drawing to show an area or hidden part of an object by cutting away or removing some of that object. The cut line is called a “cutting plane”, and can be done in several ways.
What is Section AA in drawing?
The cutting plane is represented by a cutting plane line. The cutting plane line is defined as A-A, and the section view is defined as view A-A. Figure 4-42. All surfaces directly visible must be shown in a section view.
What do the arrows on a cutting plane line indicate?
A cutting plane line is used to show where the object is being cut and represents the edge view of the cutting plane. Arrows are placed at the ends of the cutting plane line to indicate the direction of sight. The arrows point to the portion of the object that is kept.
When the surface is cut by a series of cutting planes the cut surface what is it called?
Selecting of a particular plane in a series of planes drawn cutting the solid either parallel, perpendicular or oblique which cut the surface of one of the solids in straight lines and that of the other in straight lines or circles. These lines are called lines of interpenetration.
What is a phantom line?
Lines that are made visible as dots or dashes to reveal the edges of objects currently hidden from view.
What is the purpose and position of a cutting plane?
Cutting planes. Cutting planes are used to create section views. The Cutting Plane command draws a cutting plane line on the part view you want to use as the basis for the section view.
What is viewing plane line?
viewing plane line. The line used to define an auxiliary view. If the line were projected through the drawing sheet to create a plane, this plane would define the view. The viewing plane line is displayed on the drawing sheet to show the orientation of the auxiliary view in relation to the principal view.
What is the cutting plane line passes through an object?
The sectional view obtained by passing the cutting plane fully through the object is called a full section. The arrows at the end of the cutting plane line indicate the direction of sight for the sectional view. The cutting plane line may be omitted if the view is in orthographic position.
When a object is cut by an imaginary cutting plane it is represented by?
The view obtained by cutting an object with an imaginary cutting plane is called Sectional View. The surface produced by cutting the object by the section plane is called Section. It is indicated by thin section lines uniforemly spaced, generally at an angle of 45′.
What are the thin lines used to indicate where the cutting plane line has cut through material?
Section Line Section lines are used to show the cut surfaces of an object in section views. They are fine, dark lines. Various types of section lines may indicate the type of material cut by the cutting plane line.
What are the 4 types of sketching lines?
Using the Alphabet of Lines Construction Line. This line is used mainly in sketching, which is a freehand drawing technique. Visible Object line. This line is used to draw all the edges of the object. Hidden Object Line. Centre Line (or centreline) Extension Line. Dimension Line.
What is the use of thick line?
Hidden Lined (Thick) These lines are drawn to represent hidden or invisible edges of the objects.
What is plane engineering drawing?
A plane is a two dimensional object having length and breadth only. Its thickness is always neglected. Various shapes of plane figures are considered such as square, rectangle, circle, pentagon, hexagon, etc. PROJECTIONS OF PLANES.
How do you cut a plane line?
Cutting plane lines are used to define section views. Choose Home tab→Drawing Views group→Cutting Plane . Click a part view. Draw the cutting plane. When you are finished drawing the cutting plane, on the ribbon, click Close Cutting Plane . Click to define the section view direction.
What are the 7 types of section views?
There are a number of different types of sectional views that can be drawn. A few of the more common ones are: full sections, half sections, broken sections, rotated or revolved sections, removed sections, offset sections, and assembly sections.
What is a elevation drawing?
Elevation Drawing Definition Elevations are a common design drawing and technical architectural or engineering convention for graphic representation of architecture. Elevation drawings are orthographic projections. This means they are not drawn in perspective and there is no foreshortening.
How do you do sectioning?
Rule 1: A section lined area is always completely bounded by a visible outline. Rule 2: The section lines in all areas should be parallel. Section lines shown in opposite directions indicate a different part. Rule 3: All the visible edges behind the cutting plane should be shown.
What is Section AA and BB?
There’s no set rules, but I always tried to have some sort of hierarchy (AA is the primary section, BB is the opposite axis, CC, DD etc. work down into details).
What is removed section?
The removed section view is a zero-thickness slice through the model showing only cut edges and hatching perpendicular to the cutting line. It’s easy, just select two opposed model edges and a view is created perpendicular to the section line, eliminating the need to create any additional construction geometry.
What is half section?
A half section exposes the interior of one half of an object while retaining the exterior of the other half. Half sections are used mainly for symmetric objects or assembly drawings. A centerline is used to separate the two halves.
