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ENGINEERING GRAPHICS By R.Nathan Assistant Professor Department of Mechanical Engineering. C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301. I - SEMESTER 04.10.2012. UNIT – 2 “ PROJECTION OF POINTS”. Engineering Graphics Lecture Notes.
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ENGINEERING GRAPHICSBy R.NathanAssistant ProfessorDepartment of Mechanical Engineering C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
UNIT – 2“PROJECTION OF POINTS” Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
QUADRANT H.P Engineering Graphics Lecture Notes V.P H.P – HORIZONTAL PLANE V.P – VERTICAL PLANE C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
1ST - QUADRANT Engineering Graphics Lecture Notes ABOVE H.P &INFRONT OF V.P C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
2ND - QUADRANT Engineering Graphics Lecture Notes ABOVE H.P &BEHIND V.P C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
3RD - QUADRANT Engineering Graphics Lecture Notes BELOW H.P &BEHIND V.P C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
4TH - QUADRANT Engineering Graphics Lecture Notes BELOW H.P &INFRONT OF V.P C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS A POINT MAY BE SITUATED IN ANY ONE OF THE FOUR QUADRANTS ANY ONE OF THE TWO PLANES BOTH THE PLANES (ie: ON THE XY LINE) Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS A POINT MAY BE SITUATED IN ANY ONE OF THE FOUR QUADRANTS ● ● ● ● Engineering Graphics Lecture Notes ● ● ● ● C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS A POINT MAY BE SITUATED IN ANY ONE OF THE TWO PLANES ● ● ● Engineering Graphics Lecture Notes ● C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS A POINT MAY BE SITUATED IN BOTH THE PLANES (ie: on the XY Line) ● ● Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF A POINT SITUATED IN 1ST - QUADRANT Engineering Graphics Lecture Notes Front View - above XY line Top View - below XY line C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF A POINT SITUATED IN 2nd - QUADRANT Engineering Graphics Lecture Notes Front View - above XY line Top View - above XY line C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF A POINT SITUATED In 3rd - QUADRANT Engineering Graphics Lecture Notes Front View - below XY line Top View - above XY line C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF A POINT SITUATED In 4th - QUADRANT Engineering Graphics Lecture Notes Front View - below XY line Top View - below XY line C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS A POINT MAY BE SITUATED IN ANY ONE OF THE TWO PLANES ● ● ● Engineering Graphics Lecture Notes ● C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS LIES ON H.P Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS LIES ON V.P Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
PROJECTION OF POINTS SITUATED IN BOTH THE PLANES Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
EXAMPLE:- • DRAW THE PROJECTIONS OF THE FOLLOWING POINTS ON THE SAME REFERENCE LINE • A IN THE H.P AND 20 mm INFRONT THE V.P • C IN THE V.P AND 30 mm ABOVE H.P • B IN BOTH V.P AND H.P Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012
ANNA UNIVERSITY QUESTIONS • YEAR – JAN 2010 – R2008 • Draw the projection of the following points on a common reference line. • A, on H.P and 35 mm behind V.P • B, 5 mm below H.P and 40 mm in front of V.P • C, 25 mm above H.P and on V.P • YEAR – JAN 2010 – R2007 • Mark the projections of the following points on a common reference lines. • A, 35 mm behind to V.P and 20 mm below the H.P • B, 30 mm in front of the V.P and 30 mm above the H.P • C, 40 mm behind the V.P and 10 mm above the H.P • D, 45 mm below the H.P and in the V.P • E, 35 mm behind the V.P and in the H.P Engineering Graphics Lecture Notes C.R.ENGINEERING COLLEGE Alagarkovil, Madurai - 625301 I - SEMESTER 04.10.2012