五金检验标准规范及工具的认识献给初学者.doc

QC 技 能 手 册 目 录 第一章、识图技能 第一节、工程识图··························································2 第二节、尺寸的基本公差····················································6 第三节、形状和位置公差····················································7 第二章、部分量规仪器的使用 第一节、要求精度与量规仪器················································11 第二节、游标卡尺的使用····················································12 第三节、高度规的使用······················································13 第四节、分厘卡的使用······················································14 第五节、百分表的使用······················································17 第六节、平台的使用························································19 第七节、万能角度尺的使用··················································19 第八节、直角尺的使用······················································24 第九节、V型块的使用·······················································24 第十节、牙规的使用························································24 第十一节、扭力计的使用····················································25 第十二节、投影仪的使用····················································25 检验标准 第一节、检验方法··························································27 第二节、金属件及其加工品质标准············································27 第三节、喷油品质标准······················································31 第四节、包装材料品质标准··················································34 第四章、检验方法 第一节、披锋的检验方法····················································35 第二节、直线度的检验方法··················································37 第三节、平面度的检验方法··················································38 第四节、平行度的检验方法··················································39 第五节、垂直度的检验方法··················································41 第六节、同轴度的检验方法··················································42 QC 技 能 手 册 识图技能 第一节、工程识图 1、体的投影 体的投影，实质上构成该体的所有面的投影总和。运用点、线、面投影规律，就可以分析体的投影（如下图1-1）。 平面ABCD和平面EFGH都是水平面，平面AEFB和DHGC都是正垂面，这四个正面投影都积聚成直线。前后两个平面BFGC和AEHD分别为侧垂面和正平面，其正面投影重合线框b’f’g’c’(a’e’h’d’)。在水平投影中abcd和efgh反映实形，abfe,dcgh和bfgc具有类似性，aehd则积聚为一直线。 图1-1：体的三面投影 图1-2：体的三视图 2、投影