【正文】 l mill is preferably carried out a theoretical study. As the CNC machining process, especially in plex surface machining process, the cutting conditions is not static, but in the current NC machining mostly artificial selection conservative cutting parameters, and in the process of cutting parameters remain unchanged, thus greatly reduced the productivity of CNC machine tools. In CNC machining, cutting parameters correctly reasonable choice to ensure the product quality, increase productivity, reduce production costs plays a very important role. In recent years, with the NC ((NC) technology, widely used, and a variety of advanced manufacturing technology is developing rapidly, production assistant time greatly reduced, and accordingly, the proportion of cutting time is greatly improved. Therefore shorten machining time, to improve production efficiency plays a very important role. Currently, most of the factories in the production of cutting experience or reference manual to select cutting, which often reach the most preferred cutting parameters. The use of modern cutting theory, mathematical modeling and model analysis approach seeks optimal bination of cutting parameters, cutting parameter selection is an important direction. Here mainly discussed the machining on CNC machine tools, the strike cutting optimization methods. Given in detail to strike the optimal cutting diagram and practical examples. Canada presents a cutting process parameters optimization method, obtained by this method can effectively cutting parameters improve processing efficiency, the craft workers from a lot of manual labor freed duplication and achieve cutting parameters selected scientific rationalization, standardization for enterprises to create a good economic benefits. III KEY WORDS： NC, optimization, process parameters, cuttiing IV 目 錄 摘 要 .................................................................... I ABSTRACT ................................................................ II 1 緒論 ................................................................... 1 本文選題目的及意義 ................................................ 1 數(shù)控加工刀具運動軌跡的研究 ........................................ 2 工藝參數(shù)優(yōu)化的研究 ................................................ 2 數(shù)控加工在線參數(shù)優(yōu)化的國內(nèi)外發(fā)展?fàn)顩r ........................ 3 數(shù)控加工離線參數(shù)優(yōu)化的國內(nèi)外發(fā)展?fàn)顩r ........................ 4 本文研究的主要內(nèi)容 ................................................ 5 2 基于加工工藝參數(shù)的刀具優(yōu)選 ............................................. 6 數(shù)控銑削刀具優(yōu)選 .................................................. 6 銑刀刀片的選擇 .............................................. 6 銑刀刀體的選擇 .............................................. 7 切削時冷卻和涂層的選擇 ...................................... 7 順銑和逆銑的選擇 ............................................ 8 數(shù)控車削刀具優(yōu)選 .................................................. 9 車刀 的選用步驟 .............................................. 9 刀片材料和切削線速度 ........................................ 9 內(nèi)孔車刀桿的選擇基本原則 ................................... 10 數(shù)控膛削刀具優(yōu)選 ................................................. 10 刀具轉(zhuǎn)動 ................................................... 10 刀具的顛振 ................................................. 11 刀具的裝夾 ................................................. 11 切屑的排出 ................................................. 12 數(shù)控鉆削刀具優(yōu)選 ................................................. 12 刀具幾何參數(shù)的合理選擇 ........................................... 12 刀具合理幾何參數(shù) ........................................... 12 刀具合理幾何參數(shù)選擇的一般原則 ............................. 13 3 數(shù)控切削加工工藝參數(shù)優(yōu)化走刀模型的建立 ................................ 14 引言 ............................................................. 14 數(shù)控切削加工刀具的切削運動 ....................................... 14 二維數(shù)控切削加工刀具切削運動軌跡 ........................... 14 三維型腔數(shù)控銑削加工 ....................................... 17 V 球頭銑刀加工平、曲面切削力建模 ................................... 21 球頭銑刀銑削參數(shù) ........................................... 21 球頭銑刀銑削 行距與殘留高度的相互關(guān)系 ....................... 21 球頭銑刀切削加工的微元法分析 ..................................... 23 球頭銑刀切削微元的切削層參數(shù) ..................................... 25 切削層厚度 ................................................. 25 切削層寬度 Db ............................................... 26 切削面積 .................................................... 26 銑削力的一般計算方法 ....................................... 27 4 數(shù)控切削加工工藝 參數(shù)優(yōu)化目標(biāo)的研究 .................................... 29 單目標(biāo)函數(shù)數(shù)學(xué)模型的建立 ......................................... 29 單件平均生產(chǎn)時間的計算 wt ................................... 29 單件平均加工成本 ((C)的計 算 ................................. 30 優(yōu)化目標(biāo)之間的關(guān)系及其合理選擇 ............................. 31 多目標(biāo)函數(shù)數(shù)學(xué)模型的建立 ......................................... 32 主要目標(biāo)法多目標(biāo)優(yōu)化數(shù)學(xué)模型的建立 .......................... 32 基于線性加權(quán)法的多目標(biāo)優(yōu)化數(shù)學(xué)模型 ......................... 33 數(shù)控銑削、車削目標(biāo)函數(shù)的建立 ..................................... 33 5 數(shù)控切削加工工藝參數(shù)優(yōu)化約束的研究 .................................... 36 約束的來源 ....................................................... 36 制約條件函數(shù) ..................................................... 36 6 數(shù)控加工切削參數(shù)優(yōu)化設(shè)計實例 .......................................... 39 切削參數(shù)單目標(biāo)優(yōu)化 ............................................... 39 優(yōu)化設(shè)計數(shù)學(xué)模型的建立 ..................................... 39 基于 MATLAB 優(yōu)化工具箱實現(xiàn)數(shù)學(xué)模型求解 ...................... 41 7 結(jié)論 .................................................................. 48 致 謝 ................................................................... 49 參考文獻 ................................................................ 50 數(shù)控加工切削參數(shù)優(yōu)化分析 1 1 緒論 隨著科學(xué)技術(shù)的發(fā)展，