根據零件圖樣要求和毛坯情況，確定了細長軸類零件的工藝方案及加工路線。對于這類零件，軸心線作為工藝基準，采用三爪自定心卡盤夾持外圓，使工件伸出卡盤175毫米，用頂尖頂持另一端，實現粗精加工。切斷時將頂尖退出。具體加工步驟包括粗車外圓、精車各外圓面、車螺紋退刀槽、車螺紋、粗車和精車各圓弧面及圓錐面、切斷等。根據零件要求，選用經濟型數控車床，選擇CK0630型數控臥式車床。加工時需選擇三把刀具，分別為粗加工刀、切槽刀和螺紋刀，安裝在自動換刀刀架上，對好刀并輸入刀偏值。切削用量需根據機床性能、手冊及實際經驗確定，具體數值見加工程序。確定工件坐標系和對刀點，以工件左端面與軸心線的交點為原點，建立XOZ坐標系。采用手動試切對刀，對刀點為工件原點。換刀點設在工件坐標系下X70、Z30處。編寫加工程序，該程序用于CK0630車床，按機床規(guī)定指令代碼和程序段格式編寫。程序包括：G59、G90、G92、M03、M06、G00、G01、G81、G80、G33等指令。程序清單如下：N0010 G59 X0 Z195 N0020 G90 N0030 G92 X70 Z30 N0040 M03 S450 N0050 M06 T01 N0060 G00 X57 Z1 N0070 G01 X57 Z-170 F80 N0080 G00 X58 Z1 N0090 G00 X51 Z1 N0100 G01 X51 Z-113 F80 N0110 G00 X52 Z1 N0120 G91 N0130 G81 P3 N0140 G00 X-5 Z0 N0150 G01 X0 Z-63 F80 N0160 G00 X0 Z63 N0170 G80 N0180 G81 P2 N0190 G00 X-3 Z0 N0200 G01 X0 Z-25 F80 N0210 G00 X0 Z25 N0220 G80 N0230 G90 N0240 G00 X31 Z-25 N0250 G01 X37 Z-35 F80 N0260 G00 X37 Z1 N0270 G00 X23 Z-72.5 N0280 G00 X26 Z1 N0290 G01 X30 Z-2 F60 N0300 G01 X30 Z-25 F60 N0310 G01 X36 Z-35 F60 N0320 G01 X36 Z-63 F60 N0330 G00 X56 Z-63 N0340 G01 X56 Z-170 F60 N0350 G28 N0360 G29 N0370 M06 T03 N0380 M03 S400 N0390 G00 X31 Z-25 N0400 G01 X26 Z-25 F40 N0410 G00 X31 Z-23 N0420 G01 X26 Z-23 F40 N0430 G00 X30 Z-21 N0440 G01 X26 Z-23 F40 N0450 G00 X36 Z-35 N0460 G01 X26 Z-25 F40 N0470 G00 X57 Z-113 N0480 G01 X34.5 Z-113 F40 N0490 G00 X57 Z-111 N0500 G01 X34.5 Z-111 F40 N0510 G28 N0520 G29 N0530 M06 T05 N0540 G00 X30 Z2 N0550 G91 N0560 G33 D30 I27.8 X0.1 P3 Q0 N0570 G01 X0 Z1.5 N0580 G33 D30 I27.8 X0.1 P3 Q0 N0590 G90 N0600 G00 X38 Z-45 N0610 G03 X32 Z-54 I60 K-54 F40 N0620 G02 X42 Z-69 I80 K-54 F40 N0630 G03 X42 Z-99 I0 K-84 F40 N0640 G03 X36 Z-108 I64 K-108 F40 N0650 G00 X48 Z-113 N0660 G01 X56 Z-135.4 F60 N0670 G00 X56 Z-113 N0680 G00 X40 Z-113 N0690 G01 X56 Z-135.4 F60 N0700 G00 X50 Z-113 N0710 G00 X36 Z-113 N0720 G01 X56 Z-108 F60 N0730 G00 X36 Z-45 N0740 G00 X36 Z-45 N0750 M03 S800 N0760 G03 X30 Z-54 I60 K-54 F40 N0770 G03 X40 Z-69 I80 K-54 F40 N0780 G02 X40 Z-99 I0 K-84 F40 N0790 G03 X34 Z-108 I64 K-108 F40 N0800 G01 X34 Z-113 F40 N0810 G01 X56 Z-135.4 F40 N0820 G28 N0830 G29 N0840 M06 T03 N0850 M03 S400 N0860 G00 X57 Z-168 N0870 G01 X0 Z-168 F40 N0880 G28 N0890 G29 N0900 M05 N0910 M02