【正文】 I 氣門搖臂軸支座的機械加工工藝及夾具設計 摘 要 機械加工行業(yè)作為一個傳統(tǒng)而富有活力的行業(yè)，近些年取得了突飛猛進的發(fā)展，在新經(jīng)濟時代，行業(yè)呈現(xiàn)了新的發(fā)展趨勢，由此對其它的質(zhì)量，性能要求有了新的變化?，F(xiàn)在機械加工行業(yè)發(fā)生著結(jié)構(gòu)性變化，工藝工裝的設計與改良已成為企業(yè)生存和發(fā)展的必要條件，工藝工裝的設計與改良將直接影響加工產(chǎn)品的質(zhì)量與性能。 首先介紹了氣門搖臂軸支座的作用和工藝分析，其次確定毛坯尺寸，然后進行了工藝規(guī)程設計，最后進行夾具設計。通過對氣門搖臂軸支座進行研究，來進行加工工藝和夾具設計，氣門搖臂軸支座零 件為鑄件，具有體積小，零件結(jié)構(gòu)簡單的特點，由于面比孔容易加工，所以在制定工藝規(guī)程時，就采用先加工面，再以面為基準來加工孔的方法，其中各工序夾具都采用專用夾具，其機構(gòu)設計簡單，方便且能滿足要求。 關(guān)鍵詞： 氣門搖臂軸支座；工藝分析；工藝規(guī)程設計；夾具設計 II Abstract Machining industry, as a traditional and vibrant industry, has been rapidly developed for a few past decades. In the new economic area, the industry presented a new development trend, and the trends also changes the quality and the performance of the production in some new abstracts. Machining industry is now taking place in structural changes, process design and improvement of equipment has bee the necessary conditions of the enterprise survival and development, process equipment design and improved products directly affect the quality and performance. This article introduces the role and process analysis of the valve rocker arm bearing support , followed by determining blank size, and then proceed to order the design process, the final fixture design. What will be designed is The machining process and fixture design of the Valve Rocker Arm Bearing support, which has the characteristics of three abstract. its ponents for castings, with a small size, simple structure and the characteristics of parts, because the surface is easier than the easy processing, point of order in the development process, the surface on the first processing , and then to surface as a benchmark to other processing, including the processes used special fixture, and its design is simple, convenient and can meet the requirements. Keywords: Valve rocker arm bearing support。 Process analysis； Process design；Fixture design III 目 錄 摘 要 ......................................................................................................................... I Abstract ....................................................................................................................... II 第 1 章 緒論 ............................................................................................................ 1 本設計的內(nèi)容及意義 .............................................................................. 1 課題設計的意義 ........................................................................... 1 設計內(nèi)容 ....................................................................................... 1 課題背景知識 ........................................................................................... 2 零件作用 ....................................................................................... 2 柴油機相關(guān)知識介紹 ................................................................... 3 機械加工工藝相關(guān)知識 ............................................................... 5 夾具的設計與作用 ......................................................................... 6 第 2 章 氣門搖臂軸支座的機械加工工藝規(guī)程設計 ........................................ 10 零件的工藝分析及生產(chǎn)類型的確定 ................................................... 10 零件的作用 ................................................................................. 10 零件的工藝分析 ......................................................................... 10 確定零件的生產(chǎn)類型 ..................................................................11 選擇毛坯種類繪制毛坯圖 .................................................................... 12 選擇毛坯種類 ............................................................................. 12 確定毛坯尺寸及機械加工總余量 ............................................ 13 設計毛坯圖 ................................................................................. 14 繪制毛坯圖 ................................................................................. 15 選擇加工方法，制定工藝路線 ............................................................ 15 定位基準的選擇 ......................................................................... 15 零件的表面加工方法的選擇 .................................................... 17 加工階段的劃分 ......................................................................... 17 工序的集中與分散 ..................................................................... 18 工序順序的安排 ......................................................................... 18 確定工藝路線 ............................................................................. 19 加工設備及工藝裝備選擇 ........................................................ 20 IV 工序間加工余量的確定 ............................................................. 21 切削用量以及基本時間定額的確定 ........................................ 22 第 3 章 氣門搖臂軸支座零件專用夾具的設計 ................................................ 37 確定夾具的結(jié)構(gòu)方案 ............................................................................ 37 確定定位方案，選擇定位元件 ................................................ 37 確定導向裝置 ............................................................................. 39 確定夾緊機構(gòu) ............................................................................. 40 確定輔助定位裝置 ..................................................................... 41 設計夾具體 ............................................................................................. 42 結(jié) 論 ........................................................................................................................ 45 致 謝 ........................................................................................................................ 46 參考文獻 .................................................................................................................. 47 V CONTENTS Abstract ..................................................................................................................