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目 錄 摘 要 ...........................................................................................................................................III ABSTRACT ..................................................................................................................................IV 目 錄 ............................................................................................................................................V 1 緒論 .............................................................................................................................................1 1.1 本課題的研究內(nèi)容和意義 ....................................................................................................1 1.2 國內(nèi)外的發(fā)展概況 ................................................................................................................1 1.3 本課題應(yīng)達到的要求 ............................................................................................................1 2 法蘭盤的工藝分析及生產(chǎn)類型的確定 .....................................................................................3 2.1 法蘭盤零件的用途 ...............................................................................................................3 2.2 法蘭盤零件的工藝分析 .......................................................................................................3 2.3 確定生產(chǎn)綱領(lǐng)和生產(chǎn)類型 ...................................................................................................5 3 確定毛坯繪制毛坯圖 .................................................................................................................6 3.1 選擇毛坯 ...............................................................................................................................6 3.2 確定尺寸公差及加工余量 ...................................................................................................6 4 擬定法蘭盤工藝路線 ..................................................................................................................7 4.1 精基準(zhǔn)的選擇 .......................................................................................................................7 4.2 粗基準(zhǔn)的選擇 .......................................................................................................................7 4.3 加工階段的劃分 ...................................................................................................................7 4.4 工序集中及分散 ..................................................................................................................7 4.5 工藝路線的選擇 ..................................................................................................................7 4.5.1 工藝路線方案一 ............................................................................................................7 4.5.2 工藝路線方案二 ............................................................................................................7 4.6 工藝方案的分析 ...................................................................................................................8 4.7 最終的加工工藝過程 ...........................................................................................................8 5 加工余量，工序尺寸及公差的確定 .........................................................................................9 5.1 加工余量的確定 ....................................................................................................................9 5.2 工序尺寸和公差的確定 .......................................................................................................9 5.3 Φ320mm 外圓加工余量，工序尺寸和公差的確定 ........................................................10 5.4 Φ248MM 外圓加工余量，工序尺寸和公差的確定 .........................................................11 5.5 Φ320mm 左端面加工余量，工序尺寸和公差的確定 ....................................................12 6 確定切削用量及基本工時 .......................................................................................................16 6.1 合理選擇切削用量 .............................................................................................................16 6.1.1 背吃刀量 ap 的選擇 .....................................................................................................16 6.1.2 進給量 f 的選擇 ............................................................................................................16 I 6.1.3 切削速度 VC 的選擇 .......................................................................................................16 6.2 粗加工切削用量選擇原則 .................................................................................................17 6.2.1 切削深度選擇 ..................................................................................................................18 6.2.2 進給量選擇 ....................................................................................................................18 6.2.3 切削速度選擇 ................................................................................................................18 6.3 精加工時切削用量的選擇原則 .........................................................................................18 6.3.1 切削深度選擇 .................................................................................................................18 6.3.2 進給量選擇 .....................................................................................................................18 6.3.3 切削速度選擇 .................................................................................................................18 7 孔的夾具設(shè)計 ............................................................................................................................19 7.1 研究原始資料,確定夾具的設(shè)計方案.................................................................................19 7.1.1 分析工件并確定定位方案 .............................................................................................19 7.2 確定夾具總裝配圖的設(shè)計..................................................................................................19 7.2.1 鉆模的選擇 .....................................................................................................................19 7.2.2 鉆模板的選擇 .................................................................................................................20 7.2.3 鉆套的選擇與設(shè)計 .........................................................................................................20 7.2.4 夾具體定位元件的確定..................................................................................................21 7.2.5 工件定位元件的確定......................................................................................................21 7.2.6 回轉(zhuǎn)分度裝置 .................................................................................................................23 7.2.7 對定分度裝置機構(gòu) .........................................................................................................23 7.2.8 定位器原理 .....................................................................................................................23 7.3 夾具的總裝配與原理..........................................................................................................24 8 法蘭盤的夾具設(shè)計 ....................................................................................................................25 8.1 定位基準(zhǔn)的選擇 ..................................................................................................................25 8.1.1 選擇定位基準(zhǔn)的基本方法 .............................................................................................25 8.1.2 粗基準(zhǔn)的選擇 .................................................................................................................25 8.1.3 精基準(zhǔn)的選擇 .................................................................................................................25 8.2 確定切削用量及基本工時 ..................................................................................................25 8.2.1 車 Φ320MM 端面和外圓 ...............................................................................................26 8.2.2 半精車 Φ320MM 端面和外園 .......................................................................................26 8.2.3 鉆 Φ3-12MM 孔 ..............................................................................................................27 8.3 定位誤差分析 ......................................................................................................................27 8.4 夾具設(shè)計及操作的簡要說明 ..............................................................................................27 致 謝 ...........................................................................................................................................29 參考文獻 .......................................................................................................................................30 附錄 ...............................................................................................................................................31 II