【正文】
產(chǎn)類型 ????????????? ???? 1 2. 確定毛坯, 繪制毛坯 圖 ? ?? ????? ?????? ?? 2 選擇毛坯 ?????????????? ??? ??? ???? 2 確定毛坯的尺寸公差和機(jī)械加工余量 ??????? ?? ??? 2 公差等級(jí) ????????????????? ?????? 2 轉(zhuǎn)速器盤鑄造毛坯尺寸公差及加工余量 ? ? ???????? 2 繪制轉(zhuǎn)速器盤毛坯件圖 ?????????? ??????? 2 3. 擬定轉(zhuǎn)速器盤的工藝路線 ? ???????????? ?? ?? 3 定位基準(zhǔn)的選擇 ?????? ??????????????? 3 精基準(zhǔn)的選擇 ?????????????? ??????? 3 粗基準(zhǔn)的選擇 ?????????????? ??????? 3 VI VI 表面加工方法的確定 ??????????????????? 4 加工階段的劃分 ???????????????? ????? 5 工序集中與分散 ????????????? ???? ???? 5 工序順序的安排 ??????????? ?????? ???? 5 機(jī)械加工工序 ?????????????? ??????? 5 熱處理工序 ??????????????? ??????? 5 輔助工序 ???????????????? ??????? 5 確定工藝路線 ……… …………………………………… . ………… ...5 4. 加工余量,工序尺寸和公差的確定 ????????? ??? ? 6 切削用量、時(shí)間定額的計(jì)算 ????????? ????? ? 7 、切削用量的計(jì)算 ? ????????? ????? ?? 7 、時(shí)間定額的計(jì)算 ?????????? ????? ?? 9 .基本時(shí)間 tm的計(jì)算 ?????? ??????? ????? 9 .輔助時(shí)間 ta的計(jì)算 ????????????? ????? 9 . 其他時(shí)間的計(jì)算 ?????????????? ????? 9 單件時(shí)間的計(jì)算 ???????????? ?? ????? 10 6. 夾具設(shè)計(jì) ????????? ??????????? ??? . 10 提出問(wèn)題 ?????????????? ?????? ??? 10 設(shè)計(jì)思想 ?? ???????????? ?????? ??? .11 夾具設(shè)計(jì) ????????????????????? ??? 11 ???????????? ????? ????? 11 ????????????????? 11 ????????????? ?? ????? 12 7 方案的綜合評(píng)價(jià)與分析 ?????????? ??????? ?? 12 8 體會(huì)與展望 ?????????? ? ?????????? ?? .13 9 參考文獻(xiàn) ???????????? ????????? ?? ? 14 VII VII 1 1 1 轉(zhuǎn) 速器盤的工藝分析及生產(chǎn)類型的確定 轉(zhuǎn)速器盤的用途 轉(zhuǎn)速器盤是調(diào)速機(jī)構(gòu)。s piece tight project and draws a tongs assemble the process of drawing up a craft in, make sure the gearing work of each work preface and the work of the work preface39。 了解轉(zhuǎn)速器盤的作用,接下來(lái)根據(jù)零件的性質(zhì)和零件圖上各端面的粗糙度確定毛坯的尺寸和機(jī)械加工余量。 7.第 19 天,完成圖紙和說(shuō)明書(shū)的輸出打印。 3.第 8~ 10 天,完成夾具總體方案設(shè)計(jì)(畫(huà)出草圖,與指導(dǎo)教師溝通,在其同意的前提下,進(jìn)行課程設(shè)計(jì)的下一步)。 1 張 7.課程設(shè)計(jì)說(shuō)明書(shū),包括機(jī)械加工工藝規(guī)程的編制和機(jī)床夾具設(shè)計(jì)全部?jī)?nèi)容。裝配圖出來(lái)后,由指導(dǎo)教師為學(xué)生指定需繪制的零件圖,一般為夾具體)。 2.第 3~ 7天,完成零件的工藝性分析 ,確定毛坯的類型、制造方法,編制機(jī)械加工工藝規(guī)程和所加工工序的機(jī)械加工工序卡片。 6.第 16~ 18 天,整理并完成設(shè)計(jì)說(shuō)明書(shū)的編寫(xiě)。詳細(xì)討論轉(zhuǎn)速器盤從毛坯到成品的機(jī)械加工工藝過(guò)程,分析總結(jié)轉(zhuǎn)速器盤的結(jié)構(gòu)特點(diǎn)、主要加工表面,并制定相應(yīng)的機(jī)械加工工藝規(guī)程。 關(guān)鍵詞 加工余量 定位方案 夾緊力 IV IV Abstract The main contents of this course design establishes to turn soon machine dish to process craft regulations and tongs detailed discussion turns soon machine dish to process craft process from semifinished product to the machine of finished product and analyze summary to turn soon the structure characteristics of machine dish, mainly process surface, and draw up a homologous machine to process craft regulations. Understand turns soon the function of machine dish and makes sure that size and machine of semifinished product process amount of we then make sure Jing basis first according to the fixed position basis, behind make sure thick basis, the end drawup carries the craft route o