![]() The dimension line has two arrowheads between the extension lines and the measurement on top (or inside, like in the image above) the line.īreak lines indicate that a view has been broken. Showing symmetricity can reduce the number of dimensions and make the drawing more eye-pleasing, thus easier to read.Įxtension lines annotate what is being measured. For example, hidden lines may show the length of an internal step in a turned part without using a section or a cutout view (we explain both later).Ĭentre lines are used to show holes and the symmetric properties of parts. Hidden lines can show something that would not be otherwise visible on the drawings. The line thickness varies – the outer contour uses thicker lines and the inner lines are thinner. Put simply, these lines are for drawing objects. This represents the physical boundaries of an object. The most common is a continuous line, also known as a drawing line. The different options make it possible to show both visible and hidden edges of a part, centre lines, etc. Not every line on an engineering drawing is equal. A single drawing includes many elements with quite a few variations to each of them. Let’s see what makes up an engineering drawing. Basic Components of an Engineering Drawing Having models also makes updating the drawings for revisions simple. All you need to do is add the dimensions. But the easier option is to first make a 3D model and create the drawings from that, as the programs generate the views with only a few clicks. ![]() You can, of course, use CAD for making drawings from scratch. So, we are left with only one option really – every engineer should use CAD (computer aided design) software because of its many advantages. Drawings done by hand would just add a lot of manual work for manufacturing engineers. Why? Because most of the machinery uses CNC systems that can read the information straight from the files and produce a cutting program accordingly. Today, all these instruments are still good for manual drafting but no contemporary manufacturer really wants such drawings. How to Make Drawings?Ī few decades ago, you would have had to sit down at a drawing board covered with papers of different size, rulers, callipers, etc. Still, knowing all the rules and basics of formatting is an absolute must in the industry, as traditional manufacturing companies still need detailed drawings. The only time we ask for a drawing is if you want to specify tolerances. CAD files and drawings made according to our design tips include all the necessary information for making your product. The drawings you submit for instant pricing and manufacturing in our system do not need any of this. So once a manufacturing engineer gets the drawing, he can start the production process without a second thought.įirst, we have to pause for a second and address our own customers here to avoid confusion. The info includes dimensions, part names and numbers, etc. V What Does the Future Hold? The Purpose of Engineering DrawingsĪs already said, such a technical drawing has all the information for manufacturing a part or welding and building an assembly.
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