第五章节机件的图样画法.ppt

第五章 机件的图样画法 第一节 视 图 第二节 剖 视 图 　 用剖切平面剖开机件的一部分，以显示这部分形状，并用波浪线表示剖切范围，这样的图形叫做局部剖视图 。 3. 局部剖 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. 1.为不引起误解，波浪线不要与图形中其他的图线重合，也不要画在其他图线的延长线上 。 错误画法 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.局部剖切范围的大小，视机件的具体结构形状而定，必要时允许在剖视图中再作一次简单的局部剖视，这时注意两者的剖面线应同方向、同间隔、但要相互错开。 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. 3. 对于剖切位置明显的局部剖视，一般不必标注。若剖切位置不明显时，则应进行标注。 另外，局部剖视图是一种比较灵活的表示方法，运用得好，可使视图简明清晰，但在同一个视图中，局部剖视的数量不宜过多，不然会使图形过于破碎，影响看图效果。 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. 适用范围： 局部剖是一种较灵活的表示方法，适用范围较广。 1） 实心杆上有孔、槽时，应采用局部剖视。 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）需要同时表达不对称机件的内外形状时，可以采用局部剖视 。 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. 3） 当对称机件的轮廓线与中心线重合， 不宜采用半剖视时。 错误 正确 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pt