《螺纹紧固件》PPT课件.ppt

10.2螺纹紧固件,P194-197,平垫圈 弹簧垫圈 圆螺母用止动垫圈 圆螺母,六角头螺栓,双头螺柱,六角螺母,六角开槽螺母,内六角圆柱头螺钉,开槽圆柱头螺钉,开槽沉头螺钉,紧定螺钉,螺纹紧固件的种类,螺纹紧固件的标记示例,六角头螺栓,螺栓 GB/T 5782-1986 M1060,螺钉 GB/T 68-1985 M1060,开槽沉头螺钉,双头螺柱,螺柱 GB/T 897-1988 M1050,螺母 GB/T 6170-1986 M12,1型六角螺母,平垫圈,垫圈 GB/T 97.1-1985 12,标准型弹簧垫圈,垫圈 GB/T 93-1987 12,13,13,螺母的比例画法,螺纹紧固件的画法,比例画法查表画法,P195,螺栓的画法,d,l,查表画法,比例画法,标记：螺栓 GB/T 5780 M1695,P195,螺纹紧固件连接的画法,基本连接形式：,螺栓连接,螺柱连接,螺钉连接,螺栓连接 被连接件不太厚，能加工成通孔且要求连接力较大的情况。螺柱连接 被连接件之一较厚，不适合加工成通孔且要求连接力较大。螺钉连接 被连接件受力不大，且不经常拆装。被连接件之一为通孔。,螺栓连接的画法,装配图规定画法 两零件的接触面画一条线。相邻零件剖面线方向相反或间隔不同。同一零件剖面线的方向和间隔全图一致。剖切面通过轴线时，连接件按不剖绘制。,P196,螺栓连接的简化画法,简化螺栓和螺母顶端倒角,螺柱连接的画法,用于连接力较大又经常拆卸的零件，被连接件之一较厚不易加工成通孔。,旋入长度bm，取决于零件材料,钢、青铜:bm=d铸铁:bm=1.25d bm=1.5d铝:bm=2d,P197,常见螺钉连接图,用于受力不大，且不常拆装的零件连接。被连接件之一为通孔。,P197,取决于零件的材料,钢:bm=d铸铁:bm=1.25d铝:bm=2d,螺钉连接画法,取决于零件材料,钢:bm=d铸铁:bm=1.25d铝:bm=2d,有效长度,L=bm+1,螺釘连接的画法,紧定螺钉连接画法,紧定螺钉常用于定位、防松而且受力较小的情况。,复习：书P194-197作业：习题集P63 65,M10,5,习题P63,1.六角头螺栓-C级：螺纹规格d=M16，公称长度l=95mm。,2.双头螺柱：d=M16，l=45mm，bm=1.25d，B级。,3.开槽沉头螺钉：d=M 10，l=45mm。,标记：,标记：,标记：,9-4 查表注出螺纹连接件的尺寸和标记。,1530,38,95,10,24,C1.5,26.17,M16,螺栓 GB/T5780 M1695,螺柱 GB/T898 M1645,螺钉 GB/T68 M1045,20,30,45,38,45,2,M16,2.5,90,P289,P284,P287-288,k,e,b,s,bm,b,b,k,18.3,dk,n,t,习题P63,4.平垫圈-A级：螺纹规格d=16,5.标准弹簧垫圈：螺纹规格d=16,6.1型六角螺母-A级：螺纹规格D=M16,标记：,标记：,标记：,垫圈 GB/T 97.1 16,垫圈 GB/T 93 16,螺母 GB/T 6170 M16,4.1,14.8,24,6580,3,17,30,M16,26.75,10.25,16.2,4.1,P291,P292,P290,100260,80240,90220,65200,80180,55160,60140,45120,40100,3580,3060,2550,GB/T5780,l,41,36,34,30,27,24,21,18,16,13,10,8,s max,1,0.8,1,0.8,0.6,0.6,0.6,0.6,0.4,0.4,0.25,0.2,r min,17,15,14,12.5,11.5,10,8.8,7.5,6.4,5.3,4,3.5,k 公称,45.2,39.55,37.20,32.95,29.50,26.17,22.78,19.85,17.59,14.2,10.89,8.63,e min,9,12,7.5,10,7.5,8,6,7,6,5,4,3.2,a max,38,33.25,31.35,27.7,24.85,22,19.95,16.47,14.47,11.47,8.74,6.74,dw min,27.84,24.84,22.84,20.8,18.7,16.7,14.7,12.7,10.58,8.58,6.48,5.48,ds max,32.4,28.4,26.4,24.4,21.2,18.7,16.7,14.7,12.2,10.2,7.2,6,da max,0.8,0.6,0.5,c max,79,73,69,65,61,57,53,L 200,66,60,56,52,48,44,40,36,32,28,125200,60,54,50,40,42,38,34,30,26,22,18,16,l 125,b参考,(M27),M24,(M22),M20,(M18),M16,(M14),M12,M10,M8,M6,M5,螺纹规格d,1.六角头螺栓-C级：螺纹规格d=M16，公称长度l=95mm。,标记：,1530,38,95,10,24,C1.5,26.17,M16,螺栓 GB/T5780 M1695,P284,k,e,b,s,习题P63,2.双头螺柱：d=M16，l=45mm，bm=1.25d，B级。,标记：,螺柱 GB/T898 M1645,20,30,45,M16,P289,bm,b,(3038)/20(4055)/30(60120)/38(130200)/44,(2530)/16(3240)/20(45120)/30(130180)/36,(2528)/14(3038)/16(40120)/26130/32,(2022)/12(2530)/16(3290)/22,(2022)/10(2530)/14(3275)/18,(1622)/10(2550)/16,lb,1.5P,x,16,12,10,8,6,5,d,32,24,20,16,12,10,GB/T 900-1988,24,18,15,12,10,8,GB/T 899-1988,20,15,12,10,8,6,GB/T 898-1988,16,12,10,8,6,5,GB/T 897-1988,M16,M12,M10,M8,M6,M5,螺纹规格d,bm=1d(GB/T 897-1988)bm=1.25d(GB/T 898-1988)bm=1.5d(GB/T 899-1988)bm=2d(GB/T 900-1988),38,M10,5,标记：,螺钉 GB/T68 M1045,38,45,2,2.5,90,P287-288,b,k,18.3,dk,n,t,3.开槽沉头螺钉：d=M 10，l=45mm。,11.2,9.2,6.8,5.7,4.7,3.6,3.1,2.6,2.1,da max,2.5,2,1.6,1.2,0.8,0.6,0.5,0.4,n 公称,25,b min,3,2.5,2,1.6,1.4,1,0.9,0.8,0.7,a max,1.5,1.25,1,0.8,0.7,0.5,0.45,0.4,0.35,p,M10,M8,M6,M5,M4,M3,M2.5,M2,M1.6,螺纹规格d,1280,1080,860,850,640,530,425,320,2.516,l 范围公称,2.3,2,1.4,1.2,1,0.7,0.6,0.5,0.4,f,19.5,16.5,12,9.5,9.5,6,5,4,3,rf 参考,2.5,2,1.5,1.3,1,0.8,0.6,0.5,0.4,r max,3.8,3.2,2.4,2,1.6,1.2,1,0.8,0.64,GB/T69,2,1.8,1.2,1.1,1,0.6,0.5,0.4,0.32,GB/T68,t min,5,4.65,3.3,2.7,2.7,1.65,1.5,1.2,1,k max,18.3,15.8,11.3,9.3,8.4,5.5,4.7,3.8,3,dk max,GB/T 68-2000 GB/T 69-2000,16,16,h,d2,d1,h,d2,d1,GB/T97.11985,GB/T 951985,公称尺寸d,3,37,21,3,37,22,20,3,30,17,3,30,17.5,2.5,28,15,2.5,28,15.5,14,2.5,24,13,2.5,24,13.5,12,2,20,10.5,2,20,11,10,1.6,16,8.4,1.6,16,9,8,m,Hmax,b公称,s公称,GB/T 93-1987,d1min,螺纹大径,2.5,12.5,5,5,20.2,20,2.05,10.25,4.1,4.1,16.2,1.55,7.75,3.1,3.1,12.2,12,1.3,6.5,2.6,2.6,10.2,10,1.05,5.25,2.1,2.1,8.1,8,0.8,4,1.6,1.6,6.1,6,习题P63,4.平垫圈-A级：螺纹规格d=16,5.标准弹簧垫圈：螺纹规格d=16,标记：,标记：,垫圈 GB/T 97.1 16,垫圈 GB/T 93 16,4.1,6580,3,17,30,10.25,16.2,4.1,P291,P292,小垫圈 A级(GB/T 848)平垫圈 A级（GB/T 97.1）平垫圈倒角型 A级(GB/T 97.2)平垫圈 C 级（GB/T 95）特大垫圈 C级(GB/T 5287)大垫圈 A和C级(GB/T 96),d1,h,d2,d1,b,s,H,M16,6.1型六角螺母-A级：螺纹规格D=M16,标记：,螺母 GB/T 6170 M16,14.8,24,M16,26.75,P290,min,max,min,max,min,max,s,mwmin,m,emin,dwmin,da,cmax,螺纹规格D,29.16,30,13.5,16.9,18,32.95,27.7,20,21.6,0.8,M20,23.67,24,11.3,14.1,14.8,26.75,22.5,16,17.3,0.8,17.73,18,8.3,10.37,10.8,20.03,16.6,12,13,0.6,M12,15.73,16,6.4,8.04,8.4,17.77,14.6,10,10.8,0.6,M10,12.73,13,5.1,6.44,6.8,14.38,11.6,8,8.75,0.6,M8,e,m,s,习题P63,50,30,9-5 用螺钉GB/T68 M1250,把两铸铁件连接起来。（用比例画法）,书P195,9-8 分析螺纹画法中的错误，画出正确的。,1.外螺纹,3.内外螺纹连接。,2.内螺纹,4.内外螺纹连接,习题P65,习题P65,9-9 圈出螺钉连接的画法错误，将正确的画在右边。,结束,