14-214-2 零件的表达方案及其选择零件的表达方案及其选择零件的表达方案及其选择二、表达方案选择举例一、选择表达方案的方法和步骤三、零件表达方案分析比较Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择一、选择表达方案的方法和步骤零件表达方案选择的基本要求：l完全零件的各部分形状、结构表达完全；l正确视图的投影关系及表达方法等正确；l清楚所画图形要清晰易懂。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择一、选择表达方案的方法和步骤选择表达方案的一般步骤l 选择主视图l 选择其他视图1. 选择主视图主视图是一组视图的核心，选择主视图时，先要确定零件的安放位置和投射方向。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择一、选择表达方案的方法和步骤1. 选择主视图(1)安放位置应使主视图尽可能反映零件的主要加工位置或在机器中的工作位置。l加工位置：是按零件在主要加工工序中的装夹位置 选取主视图，主视图与加工位置一致是为了制造者 看图方便。l工作位置：是指零件在机器或部件中工作时的位置 。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择一 、选择表达方案的方法和步骤1. 选择主视图安放位置选“加工位置”如：轴、套、轮盘等零件的主要加工工序是在车床或磨床上进行的，因此，这类零件的主视图应将其轴线水平放置 。选加工位置局部放大图 表达退刀槽移出断面图 表达键槽局部视图表达 键槽形状局部剖主视图 表达主要结构Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择一、选择表达方案的方法和步骤1. 选择主视图安放位置选“工作位置”如：支座、箱体等零件，它们的结构形状比较复杂，加工工序较多，装夹位置经常变化。所以画图时，此类零件以工作位置作为安放位置，使零件图便于与装配图直接对照。选工作位置Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择一、选择表达方案的方法和步骤1.选择主视图(2) 投射方向确定安放位置后，选择投影方向，使主视图能较好地反映零件的加工位置或工作位置，并能较明显地反映该零件各部分结构形状和相对位置。 2.选择其他视图主视图上尚未表达清楚的结构，用其他视图表达，注意每个视图都有表达的侧重点，几个视图互相补充而不重复。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择二、表达方案选择举例1. 轮盘类零件结构形状分析密封槽法兰盘轴承套筒凹槽油孔挡圈装配结合面沉孔轴承定位面 挡圈槽主体结构为同 轴回转体，原盘上 各孔呈辐射状非对 称分布。Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.14-214-2 零件的表达方案及其选择零件的表达方案及其选择二、表达方案选择举例1. 轮盘类零件主视图安放位置与投影方向：安放位置：轴线水平放置 ，符合加工和工作位置。投射方向：垂直轴线。KEvaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created wi