The hole is actually invisible from the top.
A.K.24Orthographic DrawingProjection of Surfaces•Centerlines:–In engineering drawing, the centerline and center marks are used•To locate center points•To show symmetry and balance•To show axes of cylindrical parts–Centerlines need to be drawn when round shapes are seen in a view, as shown in the figure.–Centerlines are also drawn along the surface where the circular form is not seen.
25Orthographic DrawingProjection of Surfaces•Linetypes in AutoCAD–New linetypes can be loaded by selecting linetype command from format menu. Linetype Manager will appear when linetype command is selected. New linetypes can be added by clicking load button.–The new linetypes will appear on the linetype list.–The new linetypes can be selected either from Linetype Manager or from the shortcut menu.
A.K. 26Orthographic DrawingAlignment of the Views•An example of orthographic drawingNote that the views are aligned. This is required in order to represent the relation between the views.
A.K.A27Orthographic DrawingAlignment of the Views•Three-view drawings are aligned horizontally and vertically. In this arrangement, the front view is the central view. Also notice that surfaces 1 and 2 are the same distance apart in the related views: top and right side.
A.K.28Orthographic DrawingAlignment of the Views•In order to align your three view orthgraphic drawings on A3 size template, you should–Leave 50 mm distance between all views and calculate the width and length of your drawing dimensions. –Center your drawing considering the paper size. You must leave equal distances from the sides of your drawing to the edges of the drawing area.
A.K. 29Chapter 3Exercise3_1.dwg
- Fall '18
- Accounting, Orthographic Projection, Multiview Drawings, Orthographic Drawing