● In the initial position assume the axis to perpendicular to the H.P.
◆ Draw the projections with the base in XY and its one edge perpendicular to the V.P.
If the pyramid is now tilted about the edge AF the axis will become inclined to the H.P. but will remain parallel to the V.P. The distances of all the corners from the V.P. will
remain constant.
The front view will not be affected expect in its position in relation to XY.The new top view will have its corners at same distances from XY, as before.
• Method -I:
i. Reproduce the front view so that the axis makes 30° angle with XY and the point a' remains in XY.
ii. Projects all the points vertically from this front view and horizontally from the first top view.Complete the new top view by drawing (a) lines joining the apex O'1 with corners of the base and (b) lines for the edges of the base.
The base will be partly hidden as shown by dashed lines a1 b1, e1 f1 and f1 a1. Similarly O1 f1 and O1 a1 are also dashed lines.
• Method -II:
i. Through a' draw a new reference line X1 Y1 inclined at 30° to the axis, to represent an auxiliary inclined plane.
ii. From the front view project the required top view on X1 Y1, keeping the distance of each point from X1 Y1 equal to the distance of its first top view from XY
viz. e1q =eb' etc.
◆ Draw the projections with the base in XY and its one edge perpendicular to the V.P.
If the pyramid is now tilted about the edge AF the axis will become inclined to the H.P. but will remain parallel to the V.P. The distances of all the corners from the V.P. will
remain constant.
The front view will not be affected expect in its position in relation to XY.The new top view will have its corners at same distances from XY, as before.
• Method -I:
i. Reproduce the front view so that the axis makes 30° angle with XY and the point a' remains in XY.
ii. Projects all the points vertically from this front view and horizontally from the first top view.Complete the new top view by drawing (a) lines joining the apex O'1 with corners of the base and (b) lines for the edges of the base.
The base will be partly hidden as shown by dashed lines a1 b1, e1 f1 and f1 a1. Similarly O1 f1 and O1 a1 are also dashed lines.
• Method -II:
i. Through a' draw a new reference line X1 Y1 inclined at 30° to the axis, to represent an auxiliary inclined plane.
ii. From the front view project the required top view on X1 Y1, keeping the distance of each point from X1 Y1 equal to the distance of its first top view from XY
viz. e1q =eb' etc.
Hi. I’m a Mechanical Engineer, are I’m Designer of Blog Magic. I’m Creative Website, Web Designer, Auto Cad 3D and Interaction Designer, Industrial Machine Designer, Web Developer, Business Enthusiast, CNC, Writer and Photo editing and some time research an Mechanical subjects, Inspired to make things looks better.
0 comments:
Post a Comment
Please do not enter any spam link in the comment box.