GB-T14486-1993工程塑料件尺寸公差.pdf

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1、中华人民共和国国家标准工程塑料模塑塑料件尺寸公差GB/T14486一93Dimensionaltolerancesforplasticengineeringmouldedplasticpats1主题内容与适用范围本标准规定了热固性和热塑性工程塑料模塑塑料件(以下简称模塑制品)的尺寸公差本标准适用于注塑、压塑、传递和浇铸成型的工程塑料模塑塑料件。不适用于挤塑成型、吹塑成型、烧结和泡沫制品。2引用标准GB180。公差与配合总论标准公差与基本偏差3基本规定3.1模塑件尺寸公差的代号、等级及数值模塑件尺寸公差的代号为MT，公差等级分为7级，各级公差数值列于表

2、1012公差等级的选用常用材料模塑件的公差等级的选用见表2。未列入表中的材料模塑件选用公差等级的方法见附录A(补充件)。13标注公差的尺寸标注公差的公差等级见表2，其所列数值与表1中的公差等级相对应。本标准只规定公差，基本尺寸的上、下偏差可根据工程的实际需要分配。+0-8例如，公差0.8可分配为:，_;.。，士0.4,给今或给;等。34未注公差的尺寸未注公差尺寸的公差等级见表2，其所列数值与表1中的公差等级相对应。35不受模具活动部分影响的尺寸“表1中关于不受模具活动部分影响的尺寸是指在同一个模具零件中成型的尺寸，见图1国家技术监督局1993一06一

3、15批准1994一05一01实施cB/T14486一93表1模塑件公差种类，大于0到3:160:::;;:::::::::::标注公差的A0.070.080.090.100.110.120.140.160.180.20〔).23MTIB0.140.160.180.200.210.220.240.260.280.300.33A0.100.120.140.160.180.200.220.24o.260.300.34M"C2B0.200.220.240.260.280.300.320.340.360.400.44A0120.140.160.180.200.

4、240.280.320.360.400.46MT3B0.320.340.360.380.400.440.480.520.560.600.66A0.160.180.200.240.280.320.360.420.480.560.64MT40.84R0.360.380.400.440.480.520.560.620.680.76A0.200.240.280.320.380.440.500.560.640.740.86MTS110.400.440.480.520.580.640.700.760.840.941.06I.28A0.260.320.380.46

5、0540.620.700.800.941.10MT6B0.460.520.580.680-740.820.901.001.141.30]481.541.80A0.380.480.580.680-780.881.001.141.32MT7F30.580.680.780.880.981.081.341.521.742.001.20未注公差的A士0.10士0.12士0.14士0.16+0.19士0.22士0.25士0.28士0.32士0.37士0.43MTS士0.53+0.20士0.22士0.24士。.26士0.29士0.32士0.35士0.38士0.42

6、士0.47、is一一A土0.13士0.16士0.19土0.23士0.27士0.31士0.35士0.40士0.47士0.55士0.64M'i613士0.23+0.26士0.29士0.33士0.37士0.41士0.45士0.50士0.57士0.65十0.74一A士019士0.24士0.29士0.34士0.39士0.44士0.50士0.57土0.66士0.77士0.90MT713士0.29士0.34士0.39士0.44土0.49士0.54士0.60士0.67士0.76士0.87士1.00注:1)A为不受模具活动部分影响的尺寸公差值,B为受模具活动部分影响的

7、尺寸公差值.吕92GB/T14486一93尺寸公差表nlrn尺寸:::{::::::::::::;::一:::::::::::::尺寸公差值0.260.290.320.360.400.440.480.520.560.600.640.700.780.860.360.390.420.460.500.540.580.620.660.700.740.800.880.960.380.420.460.500.540.600.660.720.760.840.921.001.101.20048().520.560.600.640.700.760.820.860.94

8、1.021.101.201.300.520.580.640.700.780.860.921.001.101.