塑料模塑件尺寸公差

1、表表1 1 模模塑塑件件尺尺寸寸公公差差表表 来自中华人民共和国国家标准gb/t 14486-2008 单位:毫米 公差 等级 公差 种类 基 本 尺 寸 036101418243040506580100120140160180200225250280315355400450500630800 36101418243040506580100 120 140 160 180 200 225 250 280 315 355 400 450 500 630 800 1000 标注公差的尺寸公差值 mt1 a0.070.080.090.100.110.120.140.160.180.200.230.2

2、60.290.320.360.400.440.480.520.560.600.640.700.780.860.971.161.39 b0.140.160.180.200.210.220.240.260.280.300.330.360.390.420.460.500.540.580.620.660.700.740.800.880.961.071.261.49 mt2 a0.100.120.140.160.180.200.220.240.260.300.340.380.420.460.500.540.600.660.720.760.840.921.001.101.201.401.702.10 b0

3、.200.220.240.260.280.300.320.340.360.400.440.480.520.560.600.640.700.760.820.860.941.021.101.201.301.501.802.20 mt3 a0.120.140.160.180.200.220.260.300.340.400.460.520.580.640.700.780.860.921.001.101.201.301.441.601.742.002.403.00 b0.320.340.360.380.400.420.460.500.540.600.660.720.780.840.900.981.061

4、.121.201.301.401.501.641.801.942.202.603.20 mt4 a0.160.180.200.240.280.320.360.420.480.560.640.720.820.921.021.121.241.361.481.621.802.002.202.402.603.103.804.60 b0.360.380.400.440.480.520.560.620.680.760.840.921.021.121.221.321.441.561.681.822.002.202.402.602.803.304.004.80 mt5 a0.200.240.280.320.3

5、80.440.500.560.640.740.861.001.141.281.441.601.761.922.102.302.502.803.103.503.904.505.606.90 b0.400.440.480.520.580.640.700.760.840.941.061.201.341.481.641.801.962.122.302.502.703.003.303.704.104.705.807.10 mt6 a0.260.320.380.460.520.600.700.800.941.101.281.481.722.002.202.402.602.903.203.503.904.3

6、04.805.305.906.908.5010.60 b0.450.520.580.660.720.800.901.001.141.301.481.681.922.202.402.602.803.103.403.704.104.505.005.506.107.108.7010.80 mt7 a0.380.460.560.660.760.860.981.121.321.541.802.102.402.703.003.303.704.104.504.905.406.006.707.408.209.6011.9014.80 b0.580.660.760.860.961.061.181.321.521

7、.742.002.302.602.903.203.503.904.304.705.105.606.206.907.608.409.8012.1015.00 未注公差的尺寸允许偏差 mt5 a0.100.120.140.160.190.220.250.280.320.370.430.500.570.640.720.800.880.961.051.151.251.401.551.751.952.252.80 3.45 b0.200.220.240.260.290.320.350.380.420.470.530.600.670.740.820.900.981.061.151.251.351.501.

8、651.852.052.352.90 3.55 mt6 a0.130.160.190.230.260.300.350.400.470.550.640.740.861.001.101.201.301.451.601.751.952.152.402.652.953.454.25 5.30 b0.230.260.290.330.360.400.450.500.570.650.740.840.961.101.201.301.401.551.701.852.052.252.502.753.053.554.35 5.40 mt7 a0.190.230.280.330.380.430.490.560.660

9、.770.901.051.201.351.501.651.852.052.252.452.703.003.353.704.104.805.95 7.40 b0.290.330.380.430.480.530.590.660.760.871.001.151.301.451.601.751.952.152.352.552.803.103.453.804.204.906.05 7.50 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尺寸公差值。 注2：mt1级为精密级，具有采用严密的工艺控制措施和高精度的模具、设备、原料时才有可能选用。 表表2 2 常常用用材材料料模模塑塑件件

10、尺尺寸寸公公差差等等级级的的选选用用 来自中华人民共和国国家标准gb/t 14486-2008 材料代号塑件材料 公差等级 标注公差尺寸 未注公差尺寸 高精度一般精度 abs(丙烯腈-丁二烯-苯乙烯)共聚物mt2mt3mt5 ca乙酸纤维素mt3mt4mt6 ep环氧树脂mt2mt3mt5 pa聚酰胺 无填料填充mt3mt4mt6 30%玻璃纤维填充mt2mt3mt5 pbt聚对苯二甲酸丁二酯 无填料填充mt3mt4mt6 30%玻璃纤维填充mt2mt3mt5 pc聚碳酸酯mt2mt3mt5 pdap聚邻苯二甲酸二烯丙酯mt2mt3mt5 peek聚醚醚酮mt2mt3mt5 pe-hd高密度聚

11、乙烯mt4mt5mt7 pe-ld低密度聚乙烯mt5mt6mt7 pesu 聚醚砜mt2mt3mt5 pet聚对苯二甲酸乙二酯 无填料填充mt3mt4mt6 30%玻璃纤维填充mt2mt3mt5 pf苯酚-甲醛树脂 无机填料填充mt2mt3mt5 有机填料填充mt3mt4mt6 pmma聚甲基丙烯酸甲酯mt2mt3mt5 pom聚甲醛 150 mmmt3mt4mt6 150 mmmt4mt5mt7 pp聚丙烯 无填料填充mt4mt5mt7 30%无机填料填充mt2mt3mt5 ppe聚苯醚；聚亚苯醚mt2mt3mt5 pps聚苯硫醚mt2mt3mt5 ps聚苯乙烯mt2mt3mt5 psu聚砜

12、mt2mt3mt5 pur-p热塑性聚氨酯mt4mt5mt7 pvc-p软质聚氯乙烯mt5mt6mt7 pvc-u未增塑聚氯乙烯mt2mt3mt5 san(丙烯腈-苯乙烯)共聚物mt2mt3mt5 uf脲-甲醛树脂 无机填料填充mt2mt3mt6 有机填料填充mt3mt4mt6 up不饱和聚酯30%玻璃纤维填充mt2mt3mt5 检验方法： 模塑件的检验应在成型之后，在gb/t29181998规定的标准温度（232）和湿度（50%5% ）状态下放置24h或经“后处理”后，在此温度和湿度条件下用千分尺或精度不低于0.02mm的游标 尺按gb/t17037.42003进行测量，对于超小型或大型塑件

13、还可用投影仪等光学方法测量，塑件上 同一部位应随机抽样测量5次，取其平均值并提供附有制品图样的检验报告。 2011.4.15 表表1 1 模模塑塑件件尺尺寸寸公公差差表表 来自中华人民共和国国家标准gb/t 14486-2008 单位:毫米 公差 等级 公差 种类 基 本 尺 寸 036101418243040506580100120140160180200225250280315355400450500630800 36101418243040506580100 120 140 160 180 200 225 250 280 315 355 400 450 500 630 800 1000

14、标注公差的尺寸公差值 mt1 a0.070.080.090.100.110.120.140.160.180.200.230.260.290.320.360.400.440.480.520.560.600.640.700.780.860.971.161.39 b0.140.160.180.200.210.220.240.260.280.300.330.360.390.420.460.500.540.580.620.660.700.740.800.880.961.071.261.49 mt2 a0.100.120.140.160.180.200.220.240.260.300.340.380.42

15、0.460.500.540.600.660.720.760.840.921.001.101.201.401.702.10 b0.200.220.240.260.280.300.320.340.360.400.440.480.520.560.600.640.700.760.820.860.941.021.101.201.301.501.802.20 mt3 a0.120.140.160.180.200.220.260.300.340.400.460.520.580.640.700.780.860.921.001.101.201.301.441.601.742.002.403.00 b0.320.

16、340.360.380.400.420.460.500.540.600.660.720.780.840.900.981.061.121.201.301.401.501.641.801.942.202.603.20 mt4 a0.160.180.200.240.280.320.360.420.480.560.640.720.820.921.021.121.241.361.481.621.802.002.202.402.603.103.804.60 b0.360.380.400.440.480.520.560.620.680.760.840.921.021.121.221.321.441.561.

17、681.822.002.202.402.602.803.304.004.80 mt5 a0.200.240.280.320.380.440.500.560.640.740.861.001.141.281.441.601.761.922.102.302.502.803.103.503.904.505.606.90 b0.400.440.480.520.580.640.700.760.840.941.061.201.341.481.641.801.962.122.302.502.703.003.303.704.104.705.807.10 mt6 a0.260.320.380.460.520.60

18、0.700.800.941.101.281.481.722.002.202.402.602.903.203.503.904.304.805.305.906.908.5010.60 b0.450.520.580.660.720.800.901.001.141.301.481.681.922.202.402.602.803.103.403.704.104.505.005.506.107.108.7010.80 mt7 a0.380.460.560.660.760.860.981.121.321.541.802.102.402.703.003.303.704.104.504.905.406.006.

19、707.408.209.6011.9014.80 b0.580.660.760.860.961.061.181.321.521.742.002.302.602.903.203.503.904.304.705.105.606.206.907.608.409.8012.1015.00 未注公差的尺寸允许偏差 mt5 a0.100.120.140.160.190.220.250.280.320.370.430.500.570.640.720.800.880.961.051.151.251.401.551.751.952.252.803.45 b0.200.220.240.260.290.320.350.3