《数控加工工艺与编程》课程设计零件的型腔铣及钻孔数控加工工艺与编程设计

数控加工工艺与编程课程设计说明书 学 院：航空制造工程学院专 业：机械设计制造及其自动化课程名称：数控加工工艺与编程课程设计学 生 姓 名： 学 号：设计题目：零件的型腔铣及钻孔数控加工工艺与编程设计起 迄 日 期:2015年11月17日11月28日指 导 教 师:上交资料要求：1、电子文档：零件的模型与工程图文档、 NC文件、设计说明书word稿等2、设计说明书纸质打印稿等（与电子档相同）一、设计任务二、工艺分析零件铣削工艺分析如上图所示，零件材料的处理为：HT200，下面对该零件进行数控铣削工艺分析。1. 零件图的完整性和正确性分析:零件图的表达清楚，能够直接反应各个地方的要求，符合标准。2. 零件技术分析：零件图的尺寸精度、位置精度、形状精度、表面粗糙度和热处理，在保证零件合格和性能的前提下要经济合理。尺寸偏差为0.01，表面粗糙度均为6.3um，热处理采用正火处理。3. 尺寸标注方法分析：为了零件图上的尺寸能够在加工精度保证使用性能的前提下，应集中标注或者用同一基准来标注，这样有利于设计基准、编制的程序和工艺基准的原点统一。三、毛坯的选择零件的力学性能分析：若力学性能要求高，则选锻件。若不高，选铸件。因为零件材料是HT200，指的是最低抗拉强度为200MPa的灰铸铁。1.承受较大应力的零件（弯曲应力0.49MPa（大于10t在磨损下工作的大型铸件压力1.47MPa） 3.要求一定的气密性或耐弱腐蚀性介质 所以选铸件。四、工艺过程设计工序号工序内容刀具号mm主轴转速（r/min）进给速度（mm/min）背吃刀量mm程序编号1零件型腔铣D10R112002503O00012零件钻孔Z810002000.5O0002五型腔铣加工1 打开模型文件并进入加工环境 步骤1.在F盘ugwenjian文件夹中打开已经画好的-model4.prt模型文件 步骤2.进入加工环境。选择下拉菜单开始，点击加工命令，系统弹出“加工环境”的对话框，在“加工环境”的对话框的CAM会话配置列表中选择cam-general选项。在要创建的CAM设置列表框中选择mill contour选项。单击确定按钮，进入加工环境。2 创建几何体任务一，创建机床坐标和安全平面 步骤1.进入几何视图。在工序导航的空白处右击，在系统弹出的快捷菜单中选择几何视图命令，在工序导航中双击节点MCS-MILL，弹出“MILL Orient”对话框。 步骤2创建机床坐标系。这里采用系统默认的当前机床坐标系，如下图所示步骤3.创建安全平面。在安全设置选项中选择平面选项，平面参照及安全平面创建结果如下图所示，偏置距离为20.任务二，创建部件几何体单击如图所示指定部件，系统弹出“部件几何体”对话框。在“选择条”工具条中确认“类型过滤”设置为“实体”，在图形中选取整个零件为几何部件。单击确定完成。任务三，创建毛胚几何体如上图所示，单击指定毛胚命令框，得到如下图会话框，参数设置也如图所示。单击确定，完成毛胚几何体创建。单击“铣销几何体”对话框中的“确定”按钮，完成几何体的创建。三，创建道具道具的选取及参数如下图所示单击确定，完成刀具的创建。四，创建型腔铣操作任务一，创建工序选择菜单插入，点击工序命令，系统弹出“要创建工序”对话框。其参数选择如下图单击确定，完成工序创建。任务二显示刀具和几何体 显示刀具。在刀具区域单击“编辑|显示”按钮，各类参数数据显示如下图 显示几何体。在几何体区域中单击指定部件右侧的“显示”按钮，显示结果如下图。任务三，设置刀具路径参数 参数设计结果如下图 任务四，切削参数设置 切削参数设置如下图 任务五，设置非切削移动参数 结果如下图所示任务六，设置进给率和速度 设置结果如下图5，生成刀路径轨迹并仿真六标准钻孔加工一，创建几何体任务一，创建机床坐标系任务二，创建部件几何体任务三，创建钻加工几何体 步骤一，选择下拉菜单插入，单击几何体命令，系统弹出“创建几何体”对话框。 步骤二，在“创建几何体”的对话框几何体类型区域中单击“DRLL-GEOM”按钮，在几何体下拉列表中选择WORKPIECE选项，采用系统默认名称，单击确定按钮。系统弹出“钻加工几何体”对话框。 步骤三， 指定孔（1） 单击“钻加工几何体”对话框中“指定孔”右侧的按钮，系统弹出如下图所示“点到点几何体”对话框，单击选择按钮，系统弹出如下图所示“点位选择”对话框。（2） 选择孔的边线圆弧为参照，单击确定按钮，返回到“点到点几何体”对话框。（3） 单击“点到点几何体”对话框中的确定按钮，返回到“钻加工几何体”对话框。单击确定完成钻加工几何体的创建。“点到点几何体”对话框“点位选择”对话框二，创建刀具刀具的类型选择及参数设置如下图所示三，创建工序任务一，插入工序工序参数如下图所示任务二，指定顶面 指定底面任务三，设置循环控制参数“指定参数”对话框“Cvcle参数”对话框（单击Depth-模型深度按钮）“Cvcle深度”对话框（单击模型深度按钮）“安全高度设置类型”对话框（单击自由按钮）任务四，设置一般参数如下图任务五，避让设置避让几何体对话框（单击Clearance plance-无按钮）“安全平面”对话框(单击指定按钮）安全平面参数设置如下图所示 单击“安全平面”对话框中的确定按钮，返回到“避让几何体”对话框，然后单击“避让几何体”对话框中的确定按钮，完成安全平面的设置，返回到“钻”对话框。任务六，设置进给率和速度单击“钻”对话框中的“进给率和速度”按钮，系统弹出“进给率和速度”对话框。对话框中的参数设置如下图所示单击确定按钮，完成设置四，生成刀路径轨迹并仿真生成刀路径轨迹如下图所示2D仿真结果如下图所示 七加工程序TOOL PATH/CAVITY_MILL,TOOL,D10R1TLDATA/MILL,10.0000,1.0000,75.0000,0.0000,0.0000MSYS/0.0000,0.0000,0.0000,1.0000000,0.0000000,0.0000000,0.0000000,1.0000000,0.0000000$ centerline 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