【正文】 .................................. 3 電火花加工的機(jī)理 ............................................................................................................. 3 介質(zhì)間的電離、擊穿，形成放電通道 ........................................................................... 4 介質(zhì)熱分解、電極材料熔化、氣化熱膨脹 ................................................................... 5 電極材料的拋出 ............................................................................................................... 5 極間介質(zhì)的消電離 ........................................................................................................... 6 電火花加工的基本規(guī)律 ..................................................................................................... 6 金屬材料熱物理常數(shù)對電蝕量的影響 ........................................................................... 6 能量和脈沖頻率對電蝕量的影響 ................................................................................... 7 極性效應(yīng)和脈沖寬 度對電蝕量的影響 ........................................................................... 7 加工分類 ............................................................................................................................. 8 本章小結(jié) ............................................................................................................................. 8 第三章 電火花線切割加工基本規(guī)律 ...................................................................................... 9 電火花線切割加工分類和特點(diǎn) ......................................................................................... 9 電火花線切割分類 ........................................................................................................... 9 線切割加工特點(diǎn) ............................................................................................................. 10 電火花線切割加工的應(yīng)用范圍 ....................................................................................... 10 加工模具 ......................................................................................................................... 10 加工電火花成形加工用的電極 ..................................................................................... 10 加工零件 ......................................................................................................................... 10 影響線切割工藝指標(biāo)的因素 ........................................................................................... 10 線切割加工工藝指標(biāo) ..................................................................................................... 10 電參數(shù)的影響 .................................................................................................................. 11 非電參數(shù)的影響 ............................................................................................................. 12 工件產(chǎn)生腰鼓形的原因與改善 措施 ............................................................................. 13 LSWEDM 各次切割的關(guān)系 ......................................................................................... 13 本章小結(jié) ........................................................................................................................... 14 第四章 數(shù)控電火花加工 實(shí)驗(yàn)設(shè)備 ........................................................................................ 15 數(shù)控電火花線切割加工概述 ........................................................................................... 15 數(shù)控線切割加工機(jī)床簡介 ............................................................................................. 15 數(shù)控線切割加工特點(diǎn) ..................................................................................................... 15 數(shù)控線切割加工工藝指標(biāo)及工藝參數(shù) ........................................................................... 15 線切割加工的主要工藝指標(biāo) ......................................................................................... 15 影響工藝指標(biāo)的主要因素 ............................................................................................. 15 電火花數(shù)控加工機(jī)床 ....................................................................................................... 16 機(jī)床參數(shù) ......................................................................................................................... 16 機(jī)床結(jié)構(gòu) ......................................................................................................................... 17 機(jī)床的控制系統(tǒng) ............................................................................................................. 17 實(shí)驗(yàn)操作 ............................................................................................................................ 17 機(jī)床 解鎖 ......................................................................................................................... 17 裝夾工件 ......................................................................................................................... 18 對絲 ................................................................................................................................. 18 加工液 ............................................................................................................................. 19 本章小結(jié) ............................................................................................................................ 19 第五章 數(shù)控電火花線切割加工編程設(shè)計(jì) .......................................................................... 20 Mastercam Wire X2 線切割設(shè)計(jì) ....................................................................................... 20 Mastercam Wire X2 軟件簡介 ........................................................................................ 20 Wire X2 線切割編程設(shè)計(jì)實(shí)例 ......................................................................................... 20 數(shù)控 NC 程序代碼 ........................................................................................................... 23 本