文档介绍：汽车切削加工零件未注公差尺寸的极限偏差中华人民共和国行业标准QC/T267-1999南京春兰汽车代替:-。本标准适用于汽车产品零件图中经切削加工及总成装配后再切削加工的未注公差尺寸的极限偏差。本标准也适用于冷镦、冷挤压加工形成的尺寸要素未注公差尺寸的极限偏差。、长度、孔深度、孔(直径>50)、大于至(直径?50)厚度凸肩高度槽宽,,(,,,(,,,01?,,,,(,,,,(,,,,(,,,13?,,,,(,,,,(,,,,(,,,36?,,,,(,,,,(,,,,(,,,610?,,,,(,,,,(,,,,(,,,1018?,,,,(,,,,(,,,,(,,,1830?,,,,(,,,,(,,,,(,,,3050?,,,,(,,,,(,,,5080?,,,(,,,,(,,,80120?,,,(,,,,(,,,120180?,,,(,,,,(,,,180250?,,,(,,,,(,,,250315?,,,(,,,,(,,,315400?,,,(,,,,(,,,400500?,,,(,,,,(,,,描表500630?,,,(,,,,(,,,630800?,,,(,,,,(,,,描校8001000?,,,(,,,,(,,,10001250?,,,(,,,,(,,,12501600?,,,(,,旧底图总号,,(,,,16002000?,,,(,,,,(,,,20002500?,,,(,,,,(,,,25003150?,,,(,,资料来源编制校对标准化艺表1-18编制部门审核标处更该文件号签字日期批准记数QC/T267-、表2规定。表2mmd1)C、C1、C2、C3、C4、D极限偏差大于至精装配中等装配13????????:1)对不同直径孔的中心距极限偏差,d按直径的算术平均值确定。、表3规定。描表图2描校表3mm旧底图总号孔组间距L?120>120~250>250~500>500~1200>1200装订号极限偏差?????-19标处更改文件号签字日期记数QC/T267-、表4规定。图3表4mmR、H、B?>~>~1>1~3>3~6>6~10>10~18>18极限偏差???????1.