機械制造工藝學(xué)課程設(shè)計撥叉工藝設(shè)計

1、1目錄第一章?lián)懿娴墓に嚪治黾吧a(chǎn)類型的確定..................................................................................4一、撥叉的用途.............................................................................................................

2、...........4二、撥叉的技術(shù)要求................................................................................................................4三、審查撥叉的工藝性............................................................................

3、................................5四、確定撥叉的生產(chǎn)類型........................................................................................................5第二章確定毛坯、繪制毛坯簡圖.........................................................

4、.......................................6一、選擇毛坯............................................................................................................................6二、確定毛坯的尺寸公差和機械加工余量...............................

5、.............................................61.基本參數(shù).........................................................................................................................62.公差等級........................................

6、.................................................................................73.公差帶的位置.................................................................................................................74.要求的機械加工余量.....

7、................................................................................................75.在圖21上標(biāo)注.............................................................................................................8第三章擬

8、定撥叉工藝路線............................................................................................................8一、定位基準(zhǔn)的選擇...............................................................................................

9、.................81.精基準(zhǔn)的選擇.................................................................................................................82.粗基準(zhǔn)的選擇........................................................................

10、.........................................8二、表面加工方法的確定........................................................................................................8三、加工階段的劃分.....................................................

11、...........................................................9四、工序的集中與分散............................................................................................................9五、工序順序的安排................................

12、................................................................................91.機械加工工序.................................................................................................................92.熱處理工序..........

13、...........................................................................................................93.輔助工序..........................................................................................................

14、.............11六、確定工藝路線..................................................................................................................11第四章機床設(shè)備及工藝裝備的選用..................................................................

15、..........................12一、機床設(shè)備的選用..............................................................................................................12二、工藝裝備的選用..............................................................

16、................................................12第五章加工余量、工序尺寸和公差的確定................................................................................12第六章切削用量、時間定額的計算.......................................................

17、.....................................16一、切削用量的計算..............................................................................................................161、工序1粗銑撥叉頭前后兩端面.............................................

18、..................................162、工序3精銑撥叉頭后端面A..............................................................................163、工序4鉆、擴φ22孔，孔的精度達到IT12。....................................................173、工序5銑撥叉腳槽內(nèi)側(cè)

19、面..................................................................................184、工序6銑撥叉頭臺階面.........................................................................................195、工序10拉削φ25mm花鍵軸孔...............

20、............................................................19二、時間定額的計算..............................................................................................................191.基本時間mt的計算..........................