《互换性与测量技术基础》习题参考解答(第3版)第二章光滑圆柱体结合的公差与配合1.孔或轴最大极限尺寸最小极限尺寸上偏差下偏差公差尺寸标注孔:Φ109.9859.970-0.015-0.0300.015Φ10孔:Φ1818.01718+0.01700.017Φ18孔:Φ3030.01229.991+0.012-0.0090.021Φ30轴:Φ4039.9539.888-0.050-0.1120.062Φ40轴:Φ6060.04160.011+0.041+0.0110.030Φ60轴:Φ858584.9780-0.0220.022Φ852.1)Xmax=0.033-(-0.098)=0.131mmXmin=0-(-0.065)=0.065mmTf=|0.131-0.065|=0.066mm2)Ymax=0–0.060=-0.060mmYmin=0.030–0.041=-0.011mmTf=|-0.060+0.011|=0.049mm3)Xmax=0.007-(-0.016)=0.023mmYmax=-0.018–0=-0.018mmTf=|0.023–(-0.018)|=0.041mm4)Xmax=0.039-0.002=0.037mmYmax=0–0.027=-0.027mmTf=|0.037–(-0.027)|=0.064mm5)Xmax=0.074–(-0.140)=0.214mmXmin=0-(-0.030)=+0.030mmTf=|0.214–0.030|=0.184mm6)Xmax=0.009–(-0.019)=0.028mmYmax=-0.021–0=-0.021mmTf=|0.028–(-0.021)|=0.049mm3.(1)Φ50Xmax=0.089mmXmin=0.025mm基孔制、间隙配合1第2题(2)Φ80Xmax=0.250mmXmin=0.010mm基轴制、间隙配合(3)Φ30Xmax=0.019mmYmax=-0.015mm基轴制、过渡配合(4)Φ140Ymax=-0.126mmYmin=0mm基孔制、过盈配合(5)Φ180Xmax=-0.235mmYmin=-0.170mm基孔制、过盈配合(6)Φ18Xmax=0.004mmYmax=-0.015mm基轴制、过渡配合(7)Φ50Xmax=0.033mmYmax=-0.008mm基孔制、过渡配合(8)Φ100Xmax=0.032mmYmax=-0.025mm基孔制、过渡配合(9)Φ30Xmax=0.006mmYmax=-0.028mm基孔制、过渡配合(10)Φ50Xmax=0.023mmYmax=-0.018mm基轴制、过渡配合4.(1)Φ60(2)Φ30(3)Φ50(4)Φ30(5)Φ505. Xmin=0.025mm,Xmax=0.066mm.∴配合公差Tf=|0.066–0.025|=0.041mm, Tf=Th+Ts,选基孔制.查表,孔为7级,轴为6级Th=0.025mmTs=0.016mm符合要求.∴选Φ40。验算:Xmax=0.025–(-0.041)=0.066mm;Xmin=0–(-0.025)=0.025mm.符合题意。6.1) Tf=|Xmax-Xmin|=|0.086-0.020|=0.066mm,Tf=Th+Ts∴查表选Th=Ts=0.033mm.8级公差。基孔制H8,根据Xmin查表选轴为f8,∴选Φ25。验算Xmax、Xmin后符合要求。(2) Tf=|Ymax-Ymin|=|0.076-(-0.035)|=0.041mm,Tf=Th+Ts∴查表选Th为7级,Ts为62级,基孔制H7,根据Ymin查表选轴为u6,∴选Φ40验算Ymax、Ymin后符合要求。(3) Tf=|Xmax-Ymax|=|0.046-(-0.032)|=0.078mm,Tf=Th+Ts∴查表选Ts为7级,Th为8级,基轴制h7,根据Xmax和Ymax查表选孔为K8,∴选Φ60。验算Xmax、Ymax后符合要求。7.Δl=(a黄铜+a玻璃)Δt=×(19.5×10-6+8×10-6)×(20+50)=0.048mm,查表Φ50,0.039-(-0.050)+0.048=0.137mm,0-(-0.025)+0.048=0.073mm 0.137>0.075mm,∴原设计Φ50H8/f7配合不合适。重选为:0.075-0.048=0.027mm,0.009-0.048=-0.039mm,装配时的间隙量应为-0.039~0.027mm之间,∴选Φ50验算后满足要求。8.Δl=×[22×(150-20)+12×(100-20)]×10-6=0.181mm;0.04+0.181=0.221mm,0.097+0.181=0.278mm∴装配间隙应为0.221~0.278mm,Tf=|Xmax-Xmax|=|0.278-0.221|=0.057mm,Tf=Th+Ts∴查表选孔为7级,轴为6级,基孔制H7,根据Xmin查表选轴(活塞)为b6,选Φ95。验算后基本满足要求。第三章测量技术基础1.29.875-1.005-1.37-7.5=20用4块量块组合;48.98-1.48-7.5=40用3块量块组合;40.79-1.29-9.5=30用3块量块组合;10.56-1.06=9.5用2块量块组合。2.20-0.002=19.998mm3.调零误差+0.0005mm,修正值-0.0005mm,塞规实际尺寸20+0.006-0.0005=20.0055㎜。4.=0.00005;=0.000033;δr2<δr1,第二种测量方法精度高。5.=30.741mm,=1.464μm,δlim=±3σ'=±4.392µm6.L=20.0005mm=0.5µmL=L±3=20.0015±0.0015mm7.L=L1+L2+L3=20+1.005+1.485=22.485mm3=±0.5µm∴L=22.485±0.0005mm8.N=A1-A2µm9.=52.60mm=±0.002mmR=52.60±0.002mm10.1)=±66.332µm;2)=±75.498µm;3)=±46.098µm第四章形状和位置公差及检测1.a)公差带是距离为0.02mm的两平行平面之间的区域;b)公差带是直径为0.02mm的圆柱面内的区域;c)公差带是距离为0.02mm且平行于基准A的平行平面之间的区域。2.a)为垂直度公差,...