【正文】 .............................................................................................................................................................................20 倒角 ..............................................................................................................................................................................................21 45O 倒角標(biāo)注 .......................................................................................................................................................................21 非 45O 倒角標(biāo)注 ..............................................................................................................................................................22 相同的孔、槽 ..............................................................................................................................................................................23 孔和孔組 ......................................................................................................................................................................................24 銷(xiāo)孔 ..............................................................................................................................................................................................25 對(duì)稱(chēng)結(jié)構(gòu) ....................................................................................................................................................................................26 參考尺寸和鏈?zhǔn)匠叽?................................................................................................................................................................27 參考尺寸標(biāo)注 ....................................................................................................................................................................27 鏈?zhǔn)匠叽鐦?biāo)注 ....................................................................................................................................................................29 尺寸公差 ....................................................................................................................................................................................30 線性公差 ............................................................................................................................................................................30 角度公差 ............................................................................................................................................................................31 未加工毛面尺寸 ................................................................................................................................................................32 其他類(lèi)別 ....................................................................................................................................................................................33機(jī)械制圖正誤解析圖冊(cè) 目 錄三一集團(tuán)有限公司 3 板厚標(biāo)注 ............................................................................................................................................................................33 管螺紋標(biāo)注 ........................................................................................................................................................................34 最小彎邊高度 ....................................................................................................................................................................35 乘號(hào)的標(biāo)注 ........................................................................................................................................................................36 尺寸標(biāo)注不全 ....................................................................................................................................................................37 測(cè)量基準(zhǔn)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(cè)要素 ......................................................................................................................................................................................48 基準(zhǔn)標(biāo)注 ......................................................................................................................................................................................49 一般規(guī)定 ................................................................................................................................................................................49 公共基準(zhǔn) ..............................................................................................................................................................................53 基準(zhǔn)選擇 ..........................................