机械制图——斜二测

单击以编辑,母版标题样式,单击以编辑母版文本样式,第二级,第三级,第四级,第五级,*,请同学们交作业,图纸一张,任务,4-2,斜二测图,一、轴向伸缩系数和轴间角,轴向伸缩系数：,p = r = 1,，,q = 0.5,轴间角：,X,1,O,1,Z,1,= 90,X,1,O,1,Y,1,= ,Y,1,O,1,Z,1,= 135,45,X,1,1:1,O,1,1:2,Y,1,Z,1,1:1,45,X,1,Z,1,1:1,1:1,1:2,O,1,Y,1,例,1,：根据正四棱台的两面视图画斜二测图,二、斜二测图画法,60,40,50,X,Z,Y,H,X,Y,Z,1,1,2,2,3,3,4,4,例,1,：根据正四棱台的两面视图画斜二测图,二、斜二测图画法,60,40,50,X,Z,Y,H,X,Y,Z,1,1,2,2,3,3,4,4,例,1,：根据正四棱台的两面视图画斜二测图,二、斜二测图画法,60,40,50,X,Z,Y,H,X,Y,Z,1,1,2,2,3,3,4,4,例,1,：根据正四棱台的两面视图画斜二测图,二、斜二测图画法,60,40,50,X,Z,Y,H,1,2,3,4,例,1,：根据正四棱台的两面视图画斜二测图,二、斜二测图画法,60,40,50,X,Z,Y,H,1,2,3,4,例,2,：已知三视图，画其斜二测图。,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,例,2,：已知三视图，画其斜二测图。,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,例,2,：已知三视图，画其斜二测图。,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,例,2,：已知三视图，画其斜二测图。,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,例,2,：已知三视图，画其斜二测图。,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,例,2,：已知三视图，画其斜二测图。,60,45,40,15,50,30,40,25,15,15,X,Z,Y,H,例,2,：已知三视图，画其斜二测图。,例,3,：已知两视图，画斜二轴测图。,（课本,P106,同步练习）,例,3,：已知两视图，画斜二轴测图。,（课本,P106,同步练习）,练 一 练,习题集,P.48,第,2,题,作 业,习题集,P.48,（,2,、,3,）,