Uploaded by notonectal. Document Information click to expand document information Description: Engineering Drawing - Sectional View lecture notes. Original Title Sectional View. Did you find this document useful? Is this content inappropriate? Report this Document. Description: Engineering Drawing - Sectional View lecture notes. Flag for inappropriate content. Download now. Save Save Sectional View. Sectional View. Original Title: Sectional View.
Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. Part is CUT with an imaginary plane. Notice how the cutting plane is indicated. Arrows point to the portion being kept. Documents Similar To Sectional View. Rana Babu. Sisay Garoma. Hareesha N G. Maheswaran Muthu. Abner Freeze Duarte. Cik Miza Mizziey. Sundara Moorthy. Kamal Krishna Kashyap. Safwan Jamil. Sajjad Ali Sahito. Nur Hafizah Razali. Sateesh Saati. More From notonectal. Chun-Yi Yang. General rules for sectioning:.
Eg: Dimensioning in hatched area: Dimension lines are normally shown outside the drawing, but in some unavoidable cases they can be shown inside the drawing itself.
However dimension is to be drawn on the hatched area, the hatching lines are broken at the place where dimension value is to be written. Planning your engineering drawing Before starting your engineering drawing you should plan how you are going to make best use of the space.
It is important to think about the number of views your drawing will have and how much space you will use of the paper. Lines and line styles In the first tutorial we learnt how to create simple shapes using the place line tool. The lines we created were all of the same thickness and type.
But lines on an engineering drawing signify more than just the geometry of the object and it is important that you use the appropriate line types. A thin line is used for hatching, leader lines, short centre lines, dimensions and projections. Thin chain lines are a common feature on engineering drawings used to indicate centre lines.
Centre lines are used to identify the centre of a circle, cylindrical features, or a line of symmetry. Centre lines will be covered in a little bit more detail later in this tutorial. Dashed lines are used to show important hidden detail for example wall thickness and holes.. Google key word : Sectional views in engineering technical drawings file type : doc. If you are the author of the text above and you not agree to share your knowledge for teaching, research, scholarship for fair use as indicated in the United States copyrigh low please send us an e-mail and we will remove your text quickly.
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Sectional views in engineering technical drawings Sectional views in engineering technical drawings The following texts are the property of their respective authors and we thank them for giving us the opportunity to share for free to students, teachers and users of the Web their texts will used only for illustrative educational and scientific purposes only.
All the information in our site are given for nonprofit educational purposes The information of medicine and health contained in the site are of a general nature and purpose which is purely informative and for this reason may not replace in any case, the council of a doctor or a qualified entity legally to the profession. Types of sectioning Sectional View in a single plane The example below shows a simple single plane sectional view where object is cut in half by the cutting plane.
Sectional View in two planes Offset Sectional View It is possible for the cutting plane to change directions, to minimize on the number of sectional views required to capture the necessary detail.
Half Sectional views Half sections are commonly used to show both the internal and outside view of symmetrical objects. Revolving View A "revolving view" is effective for elongated objects or the elongated section of an object.
Removed section view It is similar to revolved section with revolving the cross section Broken-out section Part Sectional views It is used when only a portion of the object needs to be sectioned. Hatching a single object When you are hatching an object, but the objects have areas that are separated, all areas of the object should be hatched in the same direction and with the same spacing.
Hatching Adjacent objects When hatching assembled parts, the direction of the hatching should ideally be reversed on adjacent parts. Hatching thin materials Sometimes, it is difficult to hatch very thin sections. This should only be used when the wall thickness size is less than 1mm Hatching large areas When hatching large areas in order to aid readability, the hatching can be limited to the area near the edges of the part.
Drawing threaded parts Drawing Conventions A threaded part Threads are drawn with thin lines as shown in this illustration. General rules for sectioning: Hatching is generally used to show areas of sections. Separate areas of the section of the same component shall be hatched in an identical manner.
The hatching of adjacent components shall be carried out with different directions or spacing. Spacing between the hatching lines should be chosen in proportion to the size of the hatched areas. Here are a few examples:. Section lines are very light. Since they are used to set off a section, they must be drawn with care. It is best to use the symbol for the material being shown as a section on a sketch.
If that symbol is not known, you may use the general purpose symbol, which is also the symbol for cast iron. When a cutting plane line passes entirely through an object, the resulting section is called a full section Fig.
It is possible to section an object whenever a closer look intentionally is desired. Here is an object sectioned from two different directions. If the cutting plane is passed halfway through an object, and one-quarter of the object is removed, the resulting section is a half section. A half section has the advantage of showing both inside and outside configurations. It is frequently used for symmetrical objects.
Hidden lines are usually not shown on the un-sectioned half unless they are needed for clearness or for dimensioning purposes. As in all sectional drawings, the cutting plane take precedence over the center line.
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