前言项目零　查阅、分析数控镗铣床的加工能力１ !!!!!!!!!!!!!!!!!!!!!!! 　一、学习目标１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　二、工学任务１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　三、相关知识１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! （一）数控镗铣床的工艺能力及技术参数１ !!!!!!!!!!!!!!!!!!!!!!!!! 　１数控铣床的工艺能力及技术参数１ !!!!!!!!!!!!!!!!!!!!!!!!!!! 　２立式加工中心的工艺能力及技术参数２ !!!!!!!!!!!!!!!!!!!!!!!!! 　３卧式加工中心的工艺能力及技术参数４ !!!!!!!!!!!!!!!!!!!!!!!!! （二）数控镗铣床的通用编程规则５ !!!!!!!!!!!!!!!!!!!!!!!!!!!! 　１数控编程简介５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　２编程步骤６ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　３数控镗铣床坐标系统６ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　４程序结构三要素及程序段格式９ !!!!!!!!!!!!!!!!!!!!!!!!!!!! 　５准备功能１０ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　６Ｍ、Ｓ、Ｆ、Ｇ９４～Ｇ９５功能１３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　７小数点编程１４ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　思考与练习题１５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 项目一　直线插补编程数控铣削平面模２１ !!!!!!!!!!!!!!!!!!!!!!!!! 　一、学习目标２１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　二、工学任务２１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　三、相关知识２１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! １工件坐标系Ｇ５３～Ｇ５９／Ｇ５３～Ｇ５９、Ｇ１５３、Ｇ５００ ２１ !!!!!!!!!!!!!!!!!!!!! ２绝对与增量尺寸编程Ｇ９０、Ｇ９１／Ｇ９０、Ｇ９１、ＡＣ～ＩＣ ２４ !!!!!!!!!!!!!!!!!!! ３英制与米制转换Ｇ２０、Ｇ２１／Ｇ７０、Ｇ７１ ２５ !!!!!!!!!!!!!!!!!!!!!!!!! ４快速定位Ｇ００ ２５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ５直线插补Ｇ０１ ２５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　四、相关实践２６ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　思考与练习题２９ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 项目二　圆弧插补编程数控铣削成形槽３１ !!!!!!!!!!!!!!!!!!!!!!!!! 　一、学习目标３１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　二、工学任务３１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　三、相关知识３１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! １平面选择Ｇ１７～Ｇ１９与圆弧插补Ｇ０２、Ｇ０３ ３１ !!!!!!!!!!!!!!!!!!!!!!! ２基点３１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　四、相关实践３５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　五、拓展知识３７ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Ⅶ　倒角与倒圆Ｃ、Ｒ／ＣＨＲ、ＲＮＤ ３７ !!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　思考与练习题３９ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 项目三　刀具半径补偿编程数控铣削平面凸模４１ !!!!!!!!!!!!!!!!!!!!! 　一、学习目标４１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　二、工学任务４１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　三、相关知识４１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! １刀具半径补偿Ｇ４０～Ｇ４２ ４１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ２切入／切出工艺路径４４ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ３偏置法编程４６ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　四、相关实践４９ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　思考与练习题５１ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 项目四　平均尺寸编程数控铣削平面凹模５３ !!!!!!!!!!!!!!!!!!!!!!!! 　一、学习目标５３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　二、工学任务５３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　三、相关知识５３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! １刀具路径５３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ２过切判断５５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ３平均尺寸５５ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ４打点法编程５６ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　四、相关实践５６ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　思考与练习题５８ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 项目五　子程序编程数控铣削腰形级进凸模６０ !!!!!!!!!!!!!!!!!!!!!! 　一、学习目标６０ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　二、工学任务６０ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　三、相关知识６０ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! １子程序６０ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ２子程序平移编程６３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ３子程序分层编程６３ !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 　四、相关实践６４ !!!!!!!!!!!!!!!!!!!!!!