【正文】 processing of aluminum alloy ponents for further study. The tool optimizes the running track at high speed machining. For easily deformable characteristics of aluminum alloy member, but also taking into account the machining efficiency and machining quality, highspeed processing in the vast extent help to solve the above problem, and then taking into account the extremely efficient use of the tool life, from the required tool cut, move fillet knife and respect and so do the optimization, and ultimately the best way to develop a tool path. Indepth analysis on the processing characteristics and deformation control method aluminum ponent in typical thinwalled structures, mainly relying on the finite element software ponents processing deformation caused by doing simulation and analysis! With the trial and then validate it. According to the characteristics and process characteristics make aluminum ponents in front of the skeletal structure analysis of thinwalled structures, ponents machining distortion of reason and then find solutions, develop positioning and clamping member machining program, and to design targeted mold . Optimization process, preferred to use the best method. Analysis of the structure of a typical aluminum ponents, front frame mold design, optimize processes, and on this basis, for highspeed milling, the need for tool type and parameters related processing needed to make the appropriate choice. Finally, based on drawings requirements, be considered from the member surface roughness and local appearance, and ultimately produce the desired member. Preliminary test results to achieve the desired goals, better quality sample processing, explained the theoretical analysis and simulation results are basically correct, fixture design solutions are feasible, the work and results of future experiments and research work laid the foundation for the actual processing also has a reference value. Keywords: aluminum ponents, thinwalled ponents, highspeed machining, milling, process optimization, distortion control IV 目錄 摘要 .................................................... I Abstract ............................................... II 第 1 章 緒論 ............................................. 1 研究的背景和意義 .................................... 1 國內(nèi)外在鋁合金構(gòu)件加工方面的研究現(xiàn)狀 ................ 1 加工方法 ....................................... 1 鋁合金構(gòu)件在高速加工時的走刀路徑 ................ 2 構(gòu)件加工中裝夾技術(shù) ............................. 3 有限元分析在構(gòu)件加工中的應(yīng)用 .................... 4 本文的主要研究目標(biāo)、內(nèi)容和方法 ...................... 5 研究目標(biāo) ....................................... 5 研究內(nèi)容 ....................................... 5 研究方法 ....................................... 6 第 2 章 構(gòu)件工藝分析極其選擇刀具的研究 .................... 7 概述 ............................................... 7 零件材料與結(jié)構(gòu)特性 .................................. 7 零件材料的屬性 ................................. 7 零件的結(jié)構(gòu)特性 ................................. 7 零件加工難點 ................................... 8 合理選擇構(gòu)件中的窄槽的加工方法 .................. 9 高速銑削下對刀具的具體要求 ......................... 10 IV 對材料的要求 .................................. 10 符合條件下對刀具的結(jié)構(gòu)和幾何參數(shù)的設(shè)置 ......... 10 高速切削對刀柄的要求 .......................... 10 刀具材料 .......................................... 10 硬質(zhì)鋁合金涂層刀具 ............................ 11 陶瓷刀具 ...................................... 11 立方氮化硼刀具 ................................ 12 金剛石刀具 .................................... 13 刀具的形狀和尺寸 ................................... 14 幾何角度 ...................................... 14 刀具形狀 ...................................... 14 小結(jié) .............................................. 15 第 3 章 高速銑削下加工薄壁構(gòu)件的路徑優(yōu)化 ................. 16 路徑優(yōu)化概念 ...................................... 16 總則 .......................................... 16 刀具路徑基本要求的確定 ........................ 16 刀具路徑 .......................................... 16 粗加工下刀具路徑 .............................. 16 精加工下刀具路徑 .............................. 17 計算機模擬構(gòu)件加工 ................................. 18 對 CAM 的要求 .................................. 18 對薄壁構(gòu)件的模擬 .............................. 18 IV 模擬單矩形孔 .................................. 19 對刀具路徑優(yōu)化 ..................................... 22 多孔下刀具路徑的優(yōu)化 .......................... 22 法 ......................................... 23 正交路徑法原理概述 ............................ 23 加工路徑優(yōu)化 .................................. 24 小結(jié) .............................................. 25 第 4 章 工件加工變形研究和夾具設(shè)計 ....................... 26 剛性差的工件裝夾 ................................... 26 裝夾要求 ...................................... 26 設(shè)計流程 ...................................... 27 鋁合金薄壁構(gòu)件的定位與夾緊方案 ................. 27 減小變形的方法 ................................ 29 銑削力的理論計算 ................................... 29 力的數(shù)學(xué)模型 .................................. 29 經(jīng)驗公式 ...................................... 30 薄壁構(gòu)件變形分析 ................................... 31 有限元概括 .................................... 31 軟件概述 ................................. 32 鋁合金薄壁構(gòu)件模型建立 ........................ 35 載荷的施加 .................................... 36 構(gòu)件受力變形 .................................. 38 IV 機床夾具 .......................................... 39 小結(jié) .............................................. 41 第 5 章 加工試驗驗證 ..................................... 43 .................................... 43 實驗條件 .......................................... 43 實驗設(shè)備 機床 ................................. 43 實驗刀具 ...................................... 44 測力系統(tǒng) ...................................... 45 實驗結(jié)果及分析 ..................................... 46 實驗結(jié)果 ...................................... 46 實驗結(jié)果分析 .................................. 48 小結(jié) .........................