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Centerlines are one of the most frequently used tools in engineering drawing. Their basic purpose is to show circular/cylindrical features in a drawing, which are found in abundance in mechanical parts. Common examples of such features include bolt holes, pins, discs, etc.
29 mar 2021 · Centre lines, Lines of Symmetry, Trajectories, and Pitch Circles type of lines are long, thin, chain lines with alternately long and short dashes of proportion ranging from 6:1 to 4:1 and evenly spaced. The proportion once selected should be maintained throughout the drawing. The centre lines are extended by a short distance beyond the outline.
On drawings, centerlines are annotations that mark the centers of circles and describe their geometric size. You can insert centerlines into drawing views automatically or manually. The SOLIDWORKS software prevents duplicate centerlines. When you dimension to a centerline, the extension lines will automatically shorten.
Certain features on a Engineering Drawing requires specific ways of indication. For example, holes require center lines to identify the center and show that it is round. Hidden detail are shown with a certain line type to avoid confusion with visible edges.
The center mark and centerline feature set is best suited for the following methods: Drawings that will be printed or published from model space. Drawings that are annotated in paper space. Both annotative scaling and dimension style support is not available.
To center a line between two lines in AutoCAD, you need to use the ‘OFFSET’ command. First, select one of the lines. Then, initiate the ‘OFFSET’ command, and enter half the distance between the two lines. Next, select the side where you want the offset line to be placed.
Center lines are an important element of engineering drawings that are used to represent the axis of symmetry for a part or assembly. These lines are drawn as long, thin dashed lines and are used to indicate the center point of cylindrical features, such as holes or shafts.
