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1、Mapping the Units and Representation of Assembly Drawings 部件测绘与画装配图的方法 Exercises 练习题,Mapping the Units and Representation of Assembly Drawings 部件测绘与画装配图,请点击相应标题显示其内容,Mapping the Units and Representation of Assembly Drawings 部件测绘与画装配图方法,5. Preliminary drafting 画出底稿,6. Completing the entire drawing 完成
2、全图,7. Final check 全面校核,1. Understanding the subassembly 了解部件,4. Determining the representation 确定表达方案,请点击鼠标左键显示后面内容,2. Drawing the assembly schematic drawings 画装配示意图,3. Mapping the assembly 测绘装配体,3. Draw an assembly drawing of flat nose pliers on A2 sheet (scale 1:1). 在A2图纸上，按11的比例拼画平口钳装配图。,Exercise
3、s 练习题,请点击相应题目显示其内容,2. Make an assembly drawing according to the axonometric projection of a low pulley device on A3 sheet (scale 1:1). 参照低速滑轮装置的轴测图, 用 A3 图纸按11比例由零件图拼画其装配图。,1. Make an assembly drawing according to the pulley device on A4 sheet . 参照带轮装置的立体图, 用A4图纸由零件图拼画其装配图。,本 小 节 结 束,谢谢您的认真学习！,退出,前一
4、页,Understanding the subassembly 了解部件,请点击鼠标左键显示后面内容,Make the purpose, working principles, fitting relationships, transmission routes of the assembly and the basic structures of the major parts very clear, and then produce an assembly sketch map. 弄清装配体的用途、工作原理、装配关系、传动路线及主要零件的基本结构。,Take flat nose clamp
5、s as an example 以平口钳为例,Making the purpose clear 用途,(2) Working principle and transmission route 工作原理与传动路线,(3) Fitting relationship Basic structures of the major parts 装配关系及零件基本结构,Analysis of the representation of a flat nose clamp assembly drawing 平口钳装配关系轴测图,Sketch map of a flat nose pliers assembly
6、 平口钳装配关系示意图,Sketch map of a flat nose pliers assembly 平口钳装配关系示意图,主视图沿前后 对称面全剖,左视图沿此面 半剖或局部剖,俯视图在螺钉联接处局部剖,用局部向视图表达该件形状,用局部放大图表达该螺纹牙形,用断面图表达轴端切平面结构,Sketch Determining the representation 确定表达方案,Draw the border and title block. 画图幅边框、图框及标题栏。,General steps for preliminary drafting (Using 2H or H pencil a
7、nd compass): 画底稿的一般步骤(用2H或H的硬芯铅笔及圆规),Preliminary drafting 画出底稿,请点击鼠标左键显示后面内容,2) Specify the drawings position in the borders according to 3:4:3, then draw the datum lines, lines of symmetry and axis shaft lines. 按3:4:3布局法确定图形 在图框中的位置，画各图形的基准线、对称线、轴线等。,3) According to the three-alignment rule, first
8、draw the major part, and then draw the neighboring parts. 按三等规律先画其主要零件，然后根据各零件的连接关系，从相邻零件开始，依次画出其他零件。,4) Draw the detailed structure of each part and complete the drawing. Pay attention to the fitting relationship between contact surfaces and non- contact surfaces. 画各零件的细小结构，完 成全部图形。注意分清零件接触面和非接触 面的
9、装配关系。,5) Draw the dimension boundaries, dimension lines, and number leaders, and complete the entire drawing. 画尺寸界线、尺寸线、序号指引线等。,Completing the entire drawing 完成全图,Draw the section lines, mark the dimensions, set the numbering, fill in the title block, item block, signatures and technical requirement
10、s, and finally complete the drawing with appropriate line styles following related standards and requirements. 画剖面线、 注尺寸、编排零件序号、填写标题栏、明细栏、注写技术要求,按标准加深图线。,技术要求 （）,请点击鼠标左键显示后面内容,Exercises 练习题,Build up a sectional assembly drawing of the component parts looking on the cutting plane AA by tracing over a
11、nd correctly positioning each part (obtain sizes by measuring the drawing and retain the integer, scale 1:1). 画出带轮机构的AA剖视装配图（尺寸数值由图中 测量，取整数，比例1:1）。,Exercises 练习题,技术要求 （）,请点击鼠标左键显示后面内容,2. Make an assembly drawing according to the axonometric projection of a low pulley device on A3 sheet (scale 1:1).
12、参照低速滑轮装置的轴测图, 用 A3 图纸按11的比例 由零件图拼画其装配图。,3. Draw an assembly drawing of flat nose pliers on A2 sheet (scale 1:1). 在A2图纸上，按11的比例拼画平口钳装配图。,技术要求 （）,请点击鼠标左键显示后面内容,Exercises 练习题,Making the purpose clear 用途 Flat nose clamp are used to fix pieces for machining. 平口钳是装在机床工作台上用来夹紧工件，以便进行切削加工的夹具。,(2) Working pr
13、inciple and transmission route 工作原理与传动路线 Turn the screw with the handle to drive the nut and to make the movable body of the clamp to perform rectilinear movements along the fixed body of the clamp. This will make the mouth of the clamp open or close to clamp or unload the part. 用手柄转动螺杆，使螺杆带动螺母，进而带动
14、活动钳身沿着固定钳身 作直线运动，从而使钳口张开或闭合，即可夹紧或卸下零件。,(3) Fitting relationship Basic structures of the major parts 装配关系及零件基本结构 The flat nose clamp consists of a fixed pliers body, screw, nut, and eleven other parts. The nut and the movable clamp body are connected as a unit. The dummy club under the nut contacts t
15、he fixed body of the clamp. When the screw rotates, the nut moves rectilinearly not rotationally. The boards are fastened to both bodies of the clamp with screws. The left side of the screw rod has a ring connected to the screw rod with a pin. 平口钳是由固定钳身、螺杆、螺母等11种零件组成。螺母与活动钳身用螺 钉连成一体，螺母下方凸出的台阶与固定钳身接触，当螺杆转动时，螺母只作 直线运动，不作旋转运动。钳口板是用螺钉分别固定在两个钳身上。螺杆左端 有一个环用销钉与螺杆固定。,在图片上点击鼠标左键可以“暂停”或再次“播放”,在图片上点击鼠标左键可以“暂停”或再次“播放”,在图片上点击鼠标左键可以“暂停”或再次“播放”,在图片上点击鼠标左键可以“暂停”或再次“播放”,在图片上点击鼠标左键可以“暂停”或再次“播放”,在图片上点击鼠标左键可以“暂停”或再次“播放”,在图片上点击鼠标左键可以“暂停”或再次“播放”,
