GO TO GENERAL DRAWING ............. GO TO GENERAL DRAWING 2...........GO TO BOTTOM . TSEC BREIF.!!!
IN FIRST YEAR ENGINEERING DRAWING SUBJECT , ESPECIALLY IN MUMBAI UNIVERSITY AREA,
THE FOLLOWING TOPICS ARE COVERED:
- TYPES OF LINES & THE PROFESSIONAL DRAWING INSTRUMENTS USED -Applications.
- FREE HAND WRITING - UPPER & lower Case alphabets & Numbers of various sizes/uses.
- DIMENSIONING METHODS:
- ALIGNED METHOD OF DIMENSIONING [ for smaller size Drawings / By default - as we use Half-Imperial size Drawing sheet.]
- UNILATERAL METHOD OF DIMENSIONING [ for bigger size / Civil engineering drawings/ Plans--for Full Imperial size Drawing sheet.]
- TANGENT-ARCS-->CURVES / LINES DRAWN TANGENTIAL TO EACH OTHER & passing through some given constraint.
GEOMETRICAL CONSTRUCTION WORK :
DIVIDING A STRAIGHT LINE IN TO A GIVEN Number OF EQUAL PARTS--Inclined line method.
DIVIDING AN ARC OF A CIRCLE / SECTOR , INTO SOME EVEN Number of EQUAL PARTS [ Normally 8 for our purpose ]
REGULAR POLYGON CONSTRUCTION-- MAINLY Equilateral Triangle , PENTAGON, HEXAGON ,Etc,.
Other geometrical Skills---since drawing is NOT a pure Science.
RECOMMENDED SCALES FOR REDUCING or ENLARGING SIZE OF DRAWINGS [ 1:1 ; 1:2 ; 1:5 , 1:10 , 1:20 , 1:50 ; 1:100 ; 1:200 ; 1:500 ...or in Reverse RATIO Which is Drawn length to the Actual length in same Units ]
MAIN PROJECTION METHODS --i.e.,DRAWING of EASY & USEFUL FIGURES or DIAGRAMS.
PICTORIAL / PERSPECTIVE / PHOTOGRAPHIC PROJECTIONS.[ NATURAL PROJECTION--AS SEEN BY NAKED EYE ]---MAINLY USED BY ARCHETECTURAL / CIVIL Engineers / Professionals.
ISOMETRIC or OBLIQUE [ARTIFICIAL] PROJECTIONS.[2d to 3d]--IN II Semester 's Course.
ORTHOGRAPHIC PROJECTIONS.[3d to 2d view Conversion with or without Sections ] [ARTIFICIAL PROJECTION]
ORTHOGRAPHIC PROJECTION OF POINTS & LINES:
ORTHOGRAPHIC PROJECTION OF PLANES: HP , VP , PP , AIP , AVP , AIPP , & Oblique PLANES
ORTHOGRAPHIC PROJECTION OF SOLIDS: AXIS OF SOLID PARALLEL TO HP , VP , PP, AIP , AVP , AIPP & Oblique Planes & Inclined to or perpendicular to or parallel to the other.
SECTIONS OF SOLIDS : i.e., PROJECTIONS OF SOLIDS CUT BY CUTTING PLANES [HP,VP , PP , AIP , AVP & AIPP ]
MULTI-VIEW ORTHOGRAPHIC PROJECTIONS OF MACHINE PARTS & THEIR SECTIONAL VIEWS --- by BOTH 1 st OR 3 rd ANGLE PROJECTION METHOD.
ENGINEERING CURVES :
CYCLOIDS ..[ CYCLOID,EPI-CYCLOID, HYPO-CYCLOID ]
SPIRALS ...[ ARCHEMEDIAN - COMPLETE CONVOLUTION or OSCILLATIONS ]
INVOLUTES...[ of THREAD or ROLLING BAR ]
CONIC SECTION CURVES ..[ ELLIPSE (e<1) ; PARABOLA(e=1) ; HYPERBOLA(e>1) ] .. ... ...by DIFFERENT GEOMETRICAL METHODS.
HELICES ( 3-DIMENSIONAL / SPACE CURVE): [CYLINDRICAL HELIX & CONICAL HELIX ].