Engineering Graphics [SPPU]

Engineering Graphics [SPPU]

 Objectives for the subjectEngineering Graphics [SPPU] is to impart and inculcate proper understanding of the theory of projection.

To impart the knowledge of reading a drawing. To improve the visualization skill. To teach basic utility of computer aided drafting (CAD) tool.  Outcomes for the subject Engineering Drawing Learner will be able to apply the basic principles of projections in 2D drawings. Apply the basic principles of projections in converting 3D view to 2D drawing. Read a given drawing. Visualize an object from the given two views. Use CAD tool to draw different views of a 3D object. Use CAD tool to draw an object in 3D.

An engineering drawing is a type of technical drawing that is used to convey information about an object. A common use is to specify the geometry necessary for the construction of a component and is called a detail drawing. Usually, a number of drawings are necessary to completely specify even a simple component. The drawings are linked together by a master drawing or assembly drawing which gives the drawing numbers of the subsequent detailed components, quantities required, construction materials and possibly 3D images that can be used to locate individual items. Although mostly consisting of pictographic representations, abbreviations and symbols are used for brevity and additional textual explanations may also be provided to convey the necessary information. The process of producing engineering drawings is often referred to as technical drawing or drafting (draughting). Drawings typically contain multiple views of a component, although additional scratch views may be added of details for further explanation. Only the information that is a requirement is typically specified. Key information such as dimensions is usually only specified in one place on a drawing, avoiding redundancy and the possibility of inconsistency. Suitable tolerances are given for critical dimensions to allow the component to be manufactured and function. More detailed production drawings may be produced based on the information given in an engineering drawing. Drawings have an information box or title block containing who drew the drawing, who approved it, units of dimensions, meaning of views, the title of the drawing and the drawing number.

Module Introduction to Engineering Drawing consist of the following subtopics Types of Lines, Dimensioning Systems as per IS conventions. Engineering Curves: – Basic construction of Cycloid, Involutes and Helix (of cylinder) only. Introduction to Auto CAD: – Basic Drawing and Editing Commands. Knowledge of setting up layers, Dimensioning, Hatching, plotting and Printing. Module Projection of Points and Lines consist of the following subtopics Lines inclined to both the Reference Planes (Excluding Traces of lines) and simple application based problems on Projection of lines. Projection of Planes:- Triangular, Square, Rectangular, Pentagonal, Hexagonal and Circular planes inclined to either HP or VP only. (Exclude composite planes). Projection of Solids:- (Prism, Pyramid, Cylinder, Tetrahedron, Hexahedron and Cone only) Solid projection with the axis inclined to HP and VP. (Exclude Spheres, Composite, Hollow solids and frustum of solids). Use change of position or Auxiliary plane method Section of Solids:- Section of Prism, Pyramid, Cylinder, Tetrahedron, Hexahedron & Cone cut by plane perpendicular to at least one reference plane.( Exclude Curved Section Plane). Use change of position or Auxiliary plane method Development of Lateral Surfaces of Sectioned Solids:- Lateral surface development of Prism, Pyramid, Tetrahedron, Hexahedron, Cylinder, Cone with section plane inclined to HP or VP only. (Exclude DLS of a solid with a hole in it and Reverse Development). (Exclude Reverse Development).

Module Orthographic and Sectional Orthographic Projections consist of the following subtopics Different views of a simple machine part as per the first angle projection method recommended by Full or Half Sectional views of the Simple Machine parts. Drawing of orthographic projections using Auto CAD. Isometric Views:- Isometric View/Drawing of blocks of plain and cylindrical surfaces using plain/natural scale only. (Exclude Spherical surfaces). Drawing of Isometric views using Auto CAD.Reading of Orthographic Projection. Orthographic Reading using Auto CAD. Introduction to 3D in AutoCAD Working in 3-dimensions, Viewing 3D Objects, Basic wireframe models, Extruding, simple revolved objects. Boolean operations.

Suggested Texts Books for the subject Applied Chemistry ‐II by Mumbai University are as follows Text Books.N.D. Bhatt, “Engineering Drawing (Plane and solid geometry)”, Charotar Publishing House Pvt. Ltd. 2 N.D. Bhatt & V.M. Panchal, “Machine Drawing”, Charotar Publishing House Pvt. Ltd. Suggested References Books for the subject Applied Chemistry ‐II by Mumbai University are as follows M.B Shah & B.C Rana, “Engineering Drawing”, Pearson Publications. P.J. Shah, “Engineering Graphics”, S Chand Publications. Dhananjay A Jolhe, “Engineering Drawing” Tata McGraw Hill. Prof. Sham Tickoo (Purdue University) &GauravVerma, “(CAD Soft Technologies): Auto CAD 2012 (For engineers and Designers)”, Dreamtech Press NewDelhi.

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