【正文】 .............................................................33機械制圖正誤解析圖冊 目 錄三一集團有限公司 3 板厚標注 ............................................................................................................................................................................33 管螺紋標注 ........................................................................................................................................................................34 最小彎邊高度 ....................................................................................................................................................................35 乘號的標注 ........................................................................................................................................................................36 尺寸標注不全 ....................................................................................................................................................................37 測量基準選擇不合理 ........................................................................................................................................................38第 4 章 幾何公差 ...................................................................................................................................................................................39 公差框指引線 ..............................................................................................................................................................................40 公差值 ..........................................................................................................................................................................................42 同軸度公差 ..........................................................................................................................................................................42 形狀公差值與位置公差值 ..................................................................................................................................................45 公共公差帶 ............................................................................................................................................................................47 被測要素 ......................................................................................................................................................................................48 基準標注 ......................................................................................................................................................................................49 一般規(guī)定 ................................................................................................................................................................................49 公共基準 ..............................................................................................................................................................................53 基準選擇 ......................................................................................................................................................................................54 理論正確尺寸 ..............................................................................................................................................................................55第 5 章 焊縫標注 ...................................................................................................................................................................................58 焊縫符號 ......................................................................................................................................................................................59 箭頭線 ..................................................................................................................................................................................59 相同焊縫數(shù)量 ......................................................................................................................................................................60 組合焊縫的符號標注 ..................................................................................................................................................................61目 錄 機械制圖正誤解析圖冊4 三一集團有限公司第 6 章 圖樣格式 .....................................................................................................................................................................................62 圖幅選擇規(guī)定 ..............................................................................................................................................................................63 一般規(guī)定 ..............................................................................................................................................................................63 A4 圖幅圖框 ........................................................................................................................................................................64 技術要求填寫 ..............................................................................................................................................................................65 技術要求條款表述 ..............................................................................................................................................................65 量和單位 ..............................................................................................................................................................................66 一般技術要求 ......................................................................................................................................................................68 焊縫類別、等級 ..........................................