Centerlines On Engineering Drawings And How They Should Be Used 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. figure 1 shows how a centerline looks, characterized by its long short. This is a discussion question we received in our engineering drawings basics course gdandtbasics gdt training engineering drawing basics .
Centerlines On Engineering Drawings And How They Should Be Used 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. center lines are used to help ensure that features are aligned properly. To properly use these to dimension from, they need to have only one interpretation. that said, it you are not using the drawing for manufacture, but for information only, what you have could be good enough. note, symmetry is not required to use a centerline, but what the centerline means must be clear. peter stockhausen. Cadman1964. i personally always apply centerlines in my side views no matter if there sectioned or not. center lines help to communicate that's it's the center of the dia hole. plus with out thumbing through the standard looking for it. i think its a standard that all dia's hole shown in a side view should have a center line. The basic drawing standards and conventions are the same regardless of what design tool you use to make the drawings. in learning drafting, we will approach it from the perspective of manual drafting. if the drawing is made without either instruments or cad, it is called a freehand sketch. figure 12 drawing tools. "assembly" drawings.
Centerlines On Engineering Drawings And How They Should Be Used Cadman1964. i personally always apply centerlines in my side views no matter if there sectioned or not. center lines help to communicate that's it's the center of the dia hole. plus with out thumbing through the standard looking for it. i think its a standard that all dia's hole shown in a side view should have a center line. The basic drawing standards and conventions are the same regardless of what design tool you use to make the drawings. in learning drafting, we will approach it from the perspective of manual drafting. if the drawing is made without either instruments or cad, it is called a freehand sketch. figure 12 drawing tools. "assembly" drawings. Centerlines: centerlines are used to indicate the center of a cylindrical or symmetrical object. they consist of alternating long and short dashes. construction lines: construction lines are lightly drawn lines that are used as guides while creating a drawing. they help in aligning and positioning other elements of the drawing. The dashed line is used to indicate hidden details like hidden outlines and hidden edges. the dashed line may be either thick or thin, but only one type (thick or thin) should be used on a single drawing or set of drawings. thin chain line. the thin chain line is used to indicate center lines, the lines of symmetry and also trajectories.
Centerlines On Engineering Drawings And How They Should Be Used Centerlines: centerlines are used to indicate the center of a cylindrical or symmetrical object. they consist of alternating long and short dashes. construction lines: construction lines are lightly drawn lines that are used as guides while creating a drawing. they help in aligning and positioning other elements of the drawing. The dashed line is used to indicate hidden details like hidden outlines and hidden edges. the dashed line may be either thick or thin, but only one type (thick or thin) should be used on a single drawing or set of drawings. thin chain line. the thin chain line is used to indicate center lines, the lines of symmetry and also trajectories.
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