《組合體畫圖》ppt課件

1、2Steps Steps 分析過程：分析過程：34 1.Draw three views of the subtraction solid. 畫切割組合體三視圖。畫切割組合體三視圖。 2. Draw three views of the composite solid. 畫綜合方式組合體三視圖。畫綜合方式組合體三視圖。 Exercises 練習題練習題本 小 節(jié) 結 束6781 and 2 小圓柱筒與大圓柱小圓柱筒與大圓柱筒筒2 and 3 大圓柱筒與支板大圓柱筒與支板3 and 5 支板與底板支板與底板2 and 4 大圓柱筒與肋大圓柱筒與肋板板4 and 5 肋板與底板肋板與底板91234

2、10 1. We usually choose the direction of projection that 1. We usually choose the direction of projection that can most can most reflect important shape and positions of reflect important shape and positions of individual components.individual components. 通常選擇反映其外形特征最明顯、各部分間相對通常選擇反映其外形特征最明顯、各部分間相對位置

3、最多位置最多的投射方向作為主視圖投射方向；的投射方向作為主視圖投射方向； 2. The locations should show most important shape 2. The locations should show most important shape characteristics characteristics and most of the planes should be in special and most of the planes should be in special orientation relative to orientation relativ

4、e to the plane of projection. the plane of projection. 安放位置應反映組合體位置特征，并使多數(shù)外表相對于投影安放位置應反映組合體位置特征，并使多數(shù)外表相對于投影面處于特殊位置；面處于特殊位置；選擇主視圖方向舉例11畫圖順序舉例12131415 1. Draw three views of the composite solid. 1. Draw three views of the composite solid. 畫組合體的三視圖。畫組合體的三視圖。 1617 1. Draw three views of the 1. Draw three views of the composite solid. composite solid. 畫組合體的三視圖。畫組合體的三視圖。 1819 1. Draw three views of the composite 1. Draw three views of the composite solid. solid. 畫組合體的三視圖。畫組合體的三視圖。 20Steps Steps 作圖步驟：作圖步驟：21321636202046224 47 7161654549 9