怎样确定冲压件未注尺寸公差使用哪个国标?

2025-03-15 08:42:44
推荐回答(3个)
回答1:

未注公差的取法没有定例,通常是按照图纸的技术要求来,通常技术要求栏中会说明未注公差的取值方法,如直接给出公差值,或者告知参考某一标准的某一等级,当无任何说明时,通常可根据冲压产品用途行业进行取值,很好理解比方电子类的冲压件与汽车类的冲压件精度等级肯定是不一样的。
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就以上三个国标来讲,作为冲压件的未注公差建议参考《GB/T 15055 冲压件未注公差尺寸极限偏差》,GB/T 1804的未注公差取值适用范围比较广,如车铣刨磨等机加工,当然冲压的也可以用,只是没有前者的专用性强。《GB/T13914 冲压件尺寸公差》也是冲压件公差取值参考指导标准,偏向于设计冲压产品时确定尺寸公差等级用,用于提高冲压行业公差取值的统一性和规范性,当然生产加工中碰到未注公差也可参考。

回答2:

GB/T15055-2007《冲压件未注公差尺寸极限偏差》规定了冲压件未注公差尺寸、圆角半径和角度的公差等级及极限偏差值,本标准适用与金属冲压件,非金属冲压件可参照本标准执行。因此冲压件未注尺寸公差使用GB/T15055-2007《冲压件未注公差尺寸极限偏差》是最恰当的。

回答3:

GB/T13914

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