现代制造系统械机制造过程基本知识点.ppt

第2章 机械制造过程基础知识;学习指南 ;2.1 机械制造工艺方法与工艺过程 ;2.1.2 机械加工工艺过程及其组成 ;工序;单件生产加工工艺过程;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;安装与工位;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;工步与走刀;2.1.3 机械装配工艺过程;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;2.1.4 生产类型及其工艺特点;2.3 基准与装夹;;;(2)工艺基准;(2)工艺基准;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;(2)工艺基准;2.3.2 工件的装夹;（1）直接找正装夹;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;（2）划线找正装夹 ;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;（3）使用夹具装夹;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;2.3.3 定位原理;2.3.3.1 六点定位原则;;六点定位原则的两点说明;板状工件安放在平面磨床的磁性工作台上，扳动磁性开关后，工件即被夹紧，其位置就被固定。但工件放在工作台什么位置上并不确定，既可以放在1的位置上（图中实线所示），也可以放在2的位置上（图中虚线所示），也即工件的 、 和 三个自由度未被限制。;典型定位元件的定位分析;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;工件的定位面为圆孔;工件的定位面为圆孔;工件的定位面为外圆柱面;工件的定位面为外圆锥孔;典型定位元件的定位分析;Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.;典型定位元件的定位分析;未被限制的自由度为 短V形块1限制了 短V形块2限制了 ;车床上用前后顶尖装夹加工轴套类零件外圆;完全定位与不完全定位;在长方体工件上铣削上平面工序，要求保证Z方向上的高度尺寸及上平面与底面的平行度，只需限制 3个自由度即可。;过球体中心打一通