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鉆床孔距能達到正負30絲嗎 |
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點評
從機床,、夾具,刀具三個方面入手,一般劃線的線粗,樣沖點眼誤差,,鉆頭刃磨時主切削刃是否對稱,,橫刃是否過大,鉆床主軸是否偏擺等都誤差可輕易的超出孔距的公差要求,,這也就是鉗工怕打眼說法的來源,。
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