Graphic Science (MEL110) (2-0-4) Dr. Ashish K Darpe, Department of Mechanical Engineering III-176 #6095(O), #1618(R) Course for Part 1: Introduction, general instructions for lettering, instruments, etc. Projection Systems- perspective, orthographic, isometric & oblique, Dimensioning Practicals for Part 1 – sketching on tracing sheets. Tracing sheet pad, one graph paper, H&HB pencils, eraser, zero grade sand paper.
Text Book:Fundamentals of Engineering Drawing Luzadder & Duff (9th or 11th Edition) Prentice-Hall of India Additional Reference Book: Engineering Drawing, N D Bhatt Some practicals on computer in Computer Aided Graphics Instruction Laboratory (CAGIL) Room No. III-331-332
COURSE OVERVIEW Lettering Projections Orthographic Axonometric Isometric Oblique Plane geometric constructions (Engg.Curves) Projections on Auxiliary Planes Projection of planes and solids Sectional Views Intersection of surfaces Development of surfaces Computer Aided Drawing
ORTHOGRAPHIC PROJECTIONS ISOMETRIC PROJECTIONS
ENGINEERING CURVES
AUXILIARY VIEWS
INTERPENETRATION OF SURFACES
DEVELOPMENT OF SURFACES
SECTION OF SOLIDS
ORTHOGRAPHIC PROJECTION Frontal Plane (Vertical Plane) PP PATTERN OF PLANES & VIEWS (First Angle Method) FP Y A) HP IS ROTATED 900 DOUNWARD B) PP, 900 IN RIGHT SIDE DIRECTION. THIS WAY BOTH PLANES ARE BROUGHT IN THE SAME PLANE CONTAINING FP. X Horizontal Plane (Top Plane) HP FP HP PP X Y FV LSV X Y TV ACTUAL PATTERN OF PLANES & VIEWS OF ORTHOGRAPHIC PROJECTIONS DRAWN IN FIRST ANGLE METHOD OF PROJECTIONS HP IS ROTATED DOWNWARD 900 AND BROUGHT IN THE PLANE OF FP. PP IS ROTATED IN RIGHT SIDE 900 AND BROUGHT IN THE PLANE OF FP.
THIRD ANGLE PROJECTION P.P. F.P. OBJECT F.V. X Y S.V. FOR T.V. IN THIS METHOD, THE OBJECT IS ASSUMED TO BE SITUATED IN THIRD QUADRANT ( BELOW HP & BEHIND OF FP. ) PLANES BEING TRANSPERENT AND INBETWEEN OBSERVER & OBJECT. P.P. F.P. OBJECT TV X Y S.V. F.V. LSV FV ACTUAL PATTERN OF PLANES & VIEWS OF THIRD ANGLE PROJECTIONS FOR S.V. FOR F.V.