Microsoft Word - lecnote_fm_engineering drawing

Figure 5.17 types of projection In both multi view projection and axonometric projection, the observer is considered to be at in ...

The distinguishing feature of axonometric projection, as compared to multi view projection, is the inclined position of the obje ...

Figure 5.18 Axonometric projections Since the most widely used method of axonometric projection is Isometric, we will only see i ...

Figure 5.19 Isometric Projection In the figure above, the projections of the axes OX, OY and OZ make angles of 120^0 with each o ...

5.3.2. Isometric Drawing When a drawing is prepared with an isometric scale or other wise as the object is actually projected on ...

The method of constructing an isometric drawing of an object composed partly of inclined surface (and oblique edges) is shown in ...

Box Construction Objects of rectangular shape may be more easily drawn by means of box construction, which consists simply in im ...

Lines in Isometric Drawing ♦ Hidden Lines The use of hidden lines in isometric drawing is governed by the same rules as in all o ...

Review question Explain the purpose and theory of multi view projections Construct a box for isometric and oblique drawings bas ...

CHAPTER SIX SECTIONING Objectives: At the end of this chapter, the students should be able to: ♦ Describe the purpose of section ...

Figure 6.1 An isometric drawing that does not show all details We can get around this by pretending to cut the object on a plane ...

Figure 6.3 sectioning the object in figure 6.1 Take away the front half (figure 6.3) and what you have is a full section view (f ...

In short, when the interior of the object is complicated or when the component parts of a machine are drawn assembled, an attemp ...

Figure 6.5 Section of an object with circular holes This is how the remaining rear section would look. Diagonal lines (cross-hat ...

make than isometric drawings. Seasoned engineers can interpret orthogonal drawings without needing an isometric drawing, but thi ...

cutting plane line as a saw blade that is used to cut through the object. The cutting-plane line is represented by a thick black ...

Figure 6.9 The direction of sight C. Section Lining Section lining shows where the object is sliced or cut by the cutting plane ...

Figure 6.10 Section lining 6.3. Multsection Views The different kinds of sections used today are: ♦ Full section ♦ Offset sectio ...

Full Section It is simply a section of one of the regular multi-views that sliced or cut completely in two. Figure 6.11 Full Sec ...

Offset Section Many times, important features do not fall in a straight line as they do in a full section. These important featu ...