教案数控铣床项目二任务三外轮廓铣削加工.doc

重庆市永川职业教育中心教师统一备课用纸科目数控铣床班级数控11级时间2012.12课时4课 题：【项目二】任务三 外轮廓铣削加工教学目标掌握外轮加工的工艺教材分析重难点：根据工艺编制合理的程序教学过程教学过程教学过程、导入语、新授课一、根据平面图构建立体图二、根据立体图编制合理加工程序%0003N10 T0 M6N12 G90 G54 G0 X-45. Y-57.5 S3000 M03 N14 G43 H0 Z100. M07 N16 Z1. N18 G01 Z-4. F1000 N20 Y-50. F1200 N22 Y50. F2000 N24 G17 G02 X-40. Y55. I5. J0. N26 G01 X40. N28 G02 X45. Y50. I0. J-5. N30 G01 Y-50. N32 G02 X40. Y-55. I-5. J0. N34 G01 X-40. N36 G02 X-45. Y-50. I0. J5. N38 G01 X-42.898 Y-49.011 F1200 N40 G02 X-45. Y-43.89 I49.901 J23.475 F2000 N42 G01 Y50. N44 G02 X-40. Y55. I5. J0. N46 G01 X40. N48 G02 X45. Y50. I0. J-5. N50 G01 Y-50. N52 G02 X40. Y-55. I-5. J0. N54 G01 X-39.613 N56 G02 X-42.898 Y-49.011 I46.616 J29.464 N58 G01 X-40.183 Y-47.734 F1200 N60 G02 X-45. Y-29.405 I47.186 J22.198 F2000 N62 G01 Y-21.666 N64 G02 X-44.096 Y-15.137 I52.003 J-3.87 N66 X-45. Y-14.515 I29.066 J43.181 N68 G01 Y50. N70 G02 X-40. Y55. I5. J0. N72 G01 X40. N74 G02 X45. Y50. I0. J-5. N76 G01 Y-50. N78 G02 X40. Y-55. I-5. J0. 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