画法几何及机械制图习题册参考答案(课堂PPT).ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,画法几何及机械制图习题集答案,1,12,6,6,？,X,6,X,90,X,8,X,20,X,60,X,10,X,X,28,56,X,5,X,56,30,2,1,5,标注下列各平面图形的尺寸（按,1:1,量取整数）,（,1,）,3,1,5,标注下列各平面图形的尺寸（按,1:1,量取整数）,（,2,）,4,1,5,标注下列各平面图形的尺寸（按,1:1,量取整数）,（,3,）,5,1,5,标注下列各平面图形的尺寸（按,1:1,量取整数）,（,4,）,6,1-6,分析平面图形的尺寸，补齐漏注的尺寸，并注明定位尺寸,R47,定位,30,定位,定位,定位,定位,定形,？,7,8,9,10,11,12,f,f”,f,15,15,13,14,15,5,15,16,17,18,3,2,已知水平线,AB,在,H,面上方,20mm,，求作它的其余投影，并在该直线上取一点,K,，使,AK=20mm.,X,O,a,k,k,b,b,a,Z,Y,W,Y,H,20,20,k,a,b,19,3,3,求作线段,CD,的侧面投影，并在该直线上取一点,K,，使,CK=20mm,。,X,O,c,d,Z,Y,W,Y,H,c,d,k,k,20,k,c,d,20,3,4,求直线,AB,的水平迹点,M,及正面迹点,N,的两面投影。,（,1,）,（,2,）,X,O,b,a,b,a,N,m,M,n,X,O,b,a,b,N n,M m,a,b,a,n,m,n,b,a,m,21,22,23,3,7,已知正平线,AB,与,H,面的倾角,a=30,，点,B,在,H,面上，求作,AB,的三面投影，有几个答案？请画出全部答案。,X,O,Z,Y,W,Y,H,b,a,b,b,a,b,30,b,30,a,24,25,26,27,3,11,过点,A,作直线，使它的,=30,，,=60,。问该直线处于什么空间位置？,X,O,Z,Y,H,Y,W,a,a,30,该直线为侧平线,30,a,28,3,12,过点,A,作直线段，使它的实长为,30mm,=30,，,=45,。问有几个答案？（思考题：当,+90,时，有无答案？）,X,O,30,30,L,H,Z,45,30,Y,L,V,a,a,Z,Z,有四个答案,当,+90,时，,无答案,b,b,b,b,b,b,b,b,29,3,13,已知线段,AB,长,30mm,，且与直线,CD,平行，求作线段,AB,的两面投影。,X,O,b,a,b,a,d,c,c,30,d,d,1,c,1,(1),x,1,CD,Z,cd,30,b,b,X,O,d,c,c,d,a,a,(2),30,3,14,已知,AB,、,CD,两直线相交，,AB,为水平线，求作,ab,。,X,O,d,c,c,d,b,a,b,a,k,k,31,32,33,3,17,已知,AB,、,CD,垂直相交，且,AB=40mm,，完成,AB,的两点投影。,X,O,d,c,c,d,b,b,K,K,Y,Y,40,a,a,34,3,17,已知,AB,、,CD,垂直相交，且,AB=40mm,，完成,AB,的两点投影。,X,O,d,c,c,d,b,b,K,K,40,a,a,K1,X1,a,1,b1,35,3,18,画出两直线,AB,及,CD,的公垂线，并求其实长。,X,O,d,c,c,d,a,b,a,Z,Z,实长,b,(1),X,O,d,c,c,d,a(,b),b,a,(2),实长,36,3,19,水平线,AK,是等腰三角形,ABC,底边,BC,的高，点,B,在,V,面前方,10mm,，点,C,在,H,面内，求作,ABC,的两面投影。,X,O,c,c,a,b,a,b,k,10,k,37,3,20,已知正方形,ABCD,的一边,BC,在,MN,上，求作该正方形的两面投影。,X,O,a,a,n,m,n,m,b,b,c,c,d,d,实长,Z,Z,38,3,21,正平线,BC,是等腰,ABC,的底边，,ABC,的高,AD,与,BC,等长，且与,H,面成,60,倾角，求作该三角形的两面投影。有几个答案？（思考题：若,BC,的,a=30,或,a,30,，则答案如何？）,X,O,a,b,b,c,c,d,60,ad,Z,AD,a,a,a,a,a,d,a,BC,Z,AD,Z,AD,共有四解,当,BC,的,a=30,时只有两解,当,a30,则无解。,39,3,22,直线,AB,上一点,C,距点,A,为,30mm,，过点,C,作直线,AB,的垂线，且与直线,EF,相交，求作该直线的两面投影。,X,O,b,b,a,a,e,e,f,f,k,k,e,1,f,1,k,1,x,1,c,c,c,1,30,40,3,23,已知等边三角形,ABC,的,C,点在,V,面内，求作此三角形的两面投影，问有几个答案？若,ab,按箭头方向平移，移至何处时，只有一个答案，再移动时，情况如何？,X,O,b,b,a,a,X,1,c,1,b,1,a,1,a,1,b,1,c,c,ab,按箭头方向平移，移至,c,的投影在,a b,上时，只有一个答案，再移动时，则无解。,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,P123(1),177,P123(2),178,P124(1),179,P124(1),180,P124(2),181,P125(1),182,P125(1),183,P125(2),184,P125(2),185,P125(3),186,P125(3),187,P125(4),188,P125(4),189,P126,190,P126,191,P127(1),192,P127(2),193,P127(3),194,P127(3),195,P128(1),196,P128(2),197,P129(1),198,P129(1),199,P129(2),200,P129(2),201,202,P131,203,P132(1),204,P132(2),205,P132(2),206,P132(3),207,P133(1),208,P133(1),209,P133(2),210,P133(2),211,P134(1),212,P134(2),213,P135,214,P136,215,P136,216,136,217,P137(1),218,P137(1),219,P137(2),220,P137(2),221,P137(2),222,P138,223,P138,224,P138,225,P139(1),226,P139(1),227,P139,228,P139(2),229,P140,230,P140(3),231,P140(2),232,P140,（,2,）,233,P141(1),234,P141(2),235,142,236,142,237,P143,238,P144,239,P145,240,P145,241,P145,型芯,242,P145,型芯,243,P149(1),244,P151(1),245,P151(1),246,P149(2),要求：,1,、图线粗细均匀。,2,、连接处光滑过渡。,3,、擦净多余图线。,247,P151(2),要求：,1,、图线粗细均匀。,2,、连接处光滑过渡。,3,、擦净多余图线。,248,P154(1),要求：,1,、图线粗细均匀。,2,、连接处光滑过渡。,3,、擦净多余图线。,249,250,P153(2),251,P168,252,P168,253,可以按比例画法画,见课本,206,254,