四、由装配图拆画零件图 Interpreting and separating assembly drawing ★内容:读懂千斤顶装配图,并由装配图拆画件2螺套的零件图 Contents: understand the assembly drawing of a jack and complete detail drawings of a screw thread insert by the assembly drawing ★目的:在培养读装配图能力的基础上,学习从装配图中拆画出零件图的方法 和步骤,以进一步提高画零件图的能力。 Objective: students should master the methods and steps of Interpreting and Separating Assembly Drawings and thus their abil ities of detail drawing plotting are improved ★要求 Requirement 1根据千斤顶装配图拆画件2螺套的零件图。零件的视图选择、表达方法要正确 尺寸标注要合理,技术要求要正确。 Complete detail drawings of the screw thread insert(Part 2#) by the assembly drawing of the jack. Selections of views and representation methods must be proper, dimensions be reasonable and techi equirements be correct 2读懂千斤顶装配图 根据千斤顶装配图,了解其工作原理,明确各零件间的相对位置及装配关系、 弄清各零件的主要结构形状,并按要求回答问题,以便检査是否真正读懂装配图 Understand the assembly drawing of the jack Read the assembly drawing of the jack, understand its work principles, figure out the structures of the parts composing the jack and relationships of position and assembly between them. Then answer the following questions and make sure the assembly drawin is understood correctly4 四、由装配图拆画零件图 Interpreting and Separating Assembly Drawings ★ 内容：读懂千斤顶装配图，并由装配图拆画件 2 螺套的零件图。 Contents: understand the assembly drawing of a jack and complete detail drawings of a screw thread insert by the assembly drawing. ★ 目的：在培养读装配图能力的基础上，学习从装配图中拆画出零件图的方法 和步骤，以进一步提高画零件图的能力。 Objective: students should master the methods and steps of Interpreting and Separating Assembly Drawings and thus their abilities of detail drawing plotting are improved. ★ 要求 Requirement: 1.根据千斤顶装配图拆画件2螺套的零件图。零件的视图选择、表达方法要正确、 尺寸标注要合理，技术要求要正确。 Complete detail drawings of the screw thread insert (Part 2#) by the assembly drawing of the jack. Selections of views and representation methods must be proper, dimensions be reasonable and technical requirements be correct. 2.读懂千斤顶装配图 根据千斤顶装配图，了解其工作原理，明确各零件间的相对位置及装配关系、 弄清各零件的主要结构形状，并按要求回答问题，以便检查是否真正读懂装配图。 Understand the assembly drawing of the jack Read the assembly drawing of the jack, understand its work principles, figure out the structures of the parts composing the jack and relationships of position and assembly between them. Then answer the following questions and make sure the assembly drawing is understood correctly