互換性與測量技術(shù)基礎(chǔ) 第二章答案 王伯平

1、第二章 光滑圓柱體結(jié)合的公差與配合孔或軸最大極限尺寸孔或軸最大極限尺寸最小極限尺寸上偏差下偏差公差尺寸標(biāo)注10 0.0150.03018 0.017030 0.0120.00940 0.0500.11260 0.0410.01185 00.022孔: 109.9859.970-0.015-0.0300.015孔: 1818.01718+0.01700.017孔: 3030.01229.991+0.012-0.0090.021軸: 4039.9539.888-0.050-0.1120.062軸: 6060.04160.011+0.041+0.0110.030軸: 858584.9780-0.02

2、20.0222.1) X= 0.033- (-0.098) = 0.131mmmaxX= 0 - (-0.065) = 0.065mmminT = | 0.131-0.065 | = 0.066mmf2) Ymax= 0 0.060 = -0.060mmY= 0.0300.041 = -0.011mmminT = | -0.060+0.011 | = 0.049mmf3) X= 0.007- (-0.016) =0.023mmmaxY= -0.0180 = -0.018mmmaxT = | 0.023(-0.018)| = 0.041mmf4) X= 0.039 - 0.002 = 0.037

3、mmmaxY= 00.027 = -0.027mmmaxT =|0.037(-0.027)| = 0.064mmf5) X= 0.074(-0.140) = 0.214mmmaxX= 0 - (-0.030) = +0.030mmminT =| 0.2140.030 | = 0.184mmf6) X=0.009(-0.019) = 0.028mmmaxY= -0.0210 = -0.021mmmaxT =| 0.028(-0.021) | = 0.049mmfH8(0.039 )第 2 題3.(1) 500f 7(0.025)0.050G10(0.130 )（2）800.010h10(0)0.

4、120K7(0.006 )Xmax = 0.089mmXmin = 0.025mm基孔制、間隙配合Xmax = 0.250mmXmin = 0.010mm基軸制、間隙配合（3）300.015X= 0.019mm= -0.015mm基軸制、過渡配合h6(00.013maxmaxH8(0.063 )（4）1400r8(0.126 )0.063H7(0.040 )Ymax= -0.126mmmin= 0mm基孔制、過盈配合（5）1800u6(0.235 )0.210M6(0.004 )Xmax= -0.235mmmin= -0.170mm基孔制、過盈配合（6）180.015h5(0)0.008H7(

5、0.025 )（7）500XmaxX= 0.004mm= 0.033mmYmax= -0.015mm基軸制、過渡配合= -0.008mm基孔制、過渡配合js6(0.008 )0.008H7(0.035 )（8）1000k6(0.025 )0.003H7(0.021)maxXmaxmax= 0.032mmYmax= -0.025mm基孔制、過渡配合（9）300n6(0.028)0.015K7(0.007 )Xmax= 0.006mmmax= -0.028mm基孔制、過渡配合（10）500.018h6(00.016Xmax= 0.023mmmax= -0.018mm基軸制、過渡配合D9(0.174

6、 )F8(0.053 )H7(0.025)H7(0.021)4.(1) 600.100(2) 300.020(3) 500(4) 300h9(0)h8(0)k6(0.018)s6(0.048)0.074U7(0.061 )(5) 500.0860.0330.0020.035h6(0)0.0165. X= 0.025mm, X= 0.066mm . 配合公差T =| 0.066 0.025| = 0.041mm ，minmaxfT = T + Tfh查表，孔為7 級，軸為6 級Th=0.025mm Ts= 0.016mm 符合要求.H7(0.025 )選400。f 6(0.025)0.041驗算

7、：Xmax=0.025 (-0.041) = 0.066mm ; Xmin= 0 (-0.025) = 0.025mm . 符合題意。6.1） T=|X -X|=|0.086-0.020|=0.066mm, T = T + T查表選T = T=0.033mm.fmaxminfhshsH8(0.033 )8 級公差。基孔制H8,根據(jù)X查表選軸為f8，選250。 驗 算X X 后符合要求。minf8(0.020 )0.053maxmin（2）T=|Y-Y |=|0.076-(-0.035)|=0.041mm ,T = T+ T 查表選T為 7 級，T 為 6fminfhshs級，基孔制H7，根據(jù)Y

8、H7(0.025 )查表選軸為u6，選400驗算Y 、后符合要求。minu6(0.076 )0.060maxmin(3) Tf =|Xmax-Ymax|=|0.046-(-0.032)|=0.078mm , Tf = Th + Ts查表選Ts7Th為 8 級，基軸制h7，根據(jù)XK8(0.014 )和Y 查表選孔為K8，選600.032。驗算X 、Ymax后符合要求。50maxmaxh7(0)0.030max l (a+at 2黃銅玻璃H8(0.039 )(19.510-6+810-6)(20+50)=0.048mm,2查表500, 0.039-(-0.050)+0.048=0.137mm，0-(-0.025)+0.048=0.073mmf 7(0.025)0.0500.1370.075mm, 原設(shè)計 50H8/f7 配合不合適。0.075-0.048=0.027mm, 0.009-0.048=-0.039mm, 裝配時的間隙量應(yīng)為 -0.039H8(0.039 )0.027mm之, 選500n6(0.033 )0.017驗算后滿足要求。95 l=222(150-20)+12(100-20)10-6=0.181mm; 0.04+0.181=0.221mm,0.097+0.181 =0.278m