零件常用表达方法-2010

(1) Drawing (2) The normal views need labeled The direction of projection The relationship with other views
(3) Dispose
(4) Notice
A normal view can be drawn as if rotated from its due orientation.
格网（筛网、 过滤网等）
Chapter 12 Section (cutaway) and other conventional view
12.2 The conception of section view
A-A
A
A
Cutting plane
6.2 How sections are drawn
1. Selecting a imaginary cutting plane 2. Drawing projection of the section
1. Six principal views 1) Six principal projection planes 2) The name of the six views
3) The relations of the six views 4) The Orientation
§12-1 Six principal views and their relative positions
砖
非金属材料（已有规定 剖面符号者除外）
金属材料剖面符号——剖面线
转子、电枢、 变压器和电抗 器等的叠钢片
混凝土
细实线、平行、等距、45度 型砂、填沙、
纵剖面 木材 横剖面 砂轮、陶瓷及 硬质合金刀片、 粉末冶金等 钢筋混凝土
液体
基础周围的 泥土
玻璃及供观察用的其 他透明材料
木质胶合 板（不分 层数）
Ф10
Top view
4
4-Ф4
A-A
30 25
R2.5
24
19
Ф 20
38 46
22
30
36
Dimension the following object
4
4xФ 3
Ф 13
A
R4 60˚
Ф3
A
9 16
R2.5
Front view
Ф10
Top view
4
4xФ4
A-A
30 25
R2.5
24
19
Ф 20
According to the range of section:
1.Full sections 2.Half-sections
An Half is drawn in a section and the other half as a regular exterior view
Half-sections are most often used with symmetrical pars. Notice: (1) The exterior and interior portions on the sectional view must be separated by a center line (2) Hidden lines are omitted unless they are essential to understand or dimension the object
The normal view is bordered with a break line. If the configuration is full and the contours is closed down, a break line can not drawing
A A
A
A
A
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A
3) The revolved view
(2) The direction of projection (3) The names of cutting plane and section view
The notices:
1. Imaginary 2.Hidden lines are omitted in all sectional views unless they are necessary to provide a clear understanding of the view
(4) It is applicable to the kind of flange
斜视图：机件向不平行于任何基本投影面的平面投 射所得的视图。
与倾斜结构平行
V
H
B
A A A A 45° A
B
斜视图的配置： 斜视图可以和相应视图按照投影关系配置，也可以平移到图纸 上适当的地方画出。 为了画图方便，允许将斜视图旋转后放正画出。
Chapter 12 Six Principal Views And Auxiliary Views
主视图 俯视图 左视图 右视图 从右向左投射 仰视图 从下向上投射 后视图 从后向前投射
长
长源自文库
长对正：主、俯、仰、后 高平齐：主、左、右、后 宽相等：俯、左、仰、右
高
上 高 下 后 前 左 长 右 右
长
左
A
与视图轮 超出视图 廓线重合 的轮廓线
A
A
当所表达的局部结构是完整的，且外形轮廓线又 局部视图：将机件的某一部分向基本投影面投射所 省略标注的条件：当局部视图按基本视图的规定位置配 是封闭时，波浪线可以省略不画。 得的视图 。 置，中间又没有其他图形隔开时，可省略标注。
3.All section-line must go at 45 degree and have same distance
A-A
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4.Must Draw all visible lines behind the sectioned area
9.2 The Types of Sectional views
(1) vertical intersection line (2) horizontal intersection line (3) Slanting intersection line
3.Drawing the sectioning symbols in sectioned areas 4. Drawing all visible lines behind the sectioned area Sectioning assemblies section lines 5. Label (1) The position of cutting plane
A A B
B
2) The normal view
The slanting surface can’t show its true shape on principal views.
A normal view is a projection on an auxiliary projection plane parallel to a slanting surface
5)向视图
Bottom view
Right side view
Left side view
Rear view
Front view
Top view
An arrowhead with a letter to show the direction of projection The name of the view is the same letter.
3. 局部剖视图
Notice: 视图与剖视图的分界线为波浪线
Front view Top view
Please correct all mistakes
错误
Dimension the following object
4
4-Ф 3
Ф 13
A
R4 60˚
Ф3
A
9 16
R2.5
Front view
1.直观性教学
概念视觉化 假想有一个剖切平面将 机件剖开，将处在观察者与 剖切面之间的部分移去，将 剩余部分向投影面投影所的 得到的视图，称为剖视图。
剖
切 面
投
影 面
剖切面的选择
剖 切 面
剖切的假想性
剖面符号
各种材料的剖面符号（GB4457.5-84）
金属材料（已有规定 剖面符号者除外） 线圈绕阻元件
A
A
(2) The intersection line of two cutting planes must pass through the axis. It don’t draw a edge.
(3) The other constructions behind the cutting plane is projected from its ordinary position
38 46
22
30
36
A-A
A
A
B
A
A
B
A-A
E
C
F
F
D
D
F-F
A
A
E
C
A-A
E
B-B
C
F F D
D
B
E A
B
B
A
C B
按剖切方式的不同，剖视图可分为：
1.单一剖切平面剖切
A-A
2.阶梯剖切
1) 画法 2) 标注 3) 注意
A
A
A
A A A
1°相互平行的剖切面的 投影不能重叠 2°剖切平面的转折处不画线 3°转折处不能与物体的粗实线(轮廓线)重合 4°选择适当的转折处,不允许产生不完整的结构
A
C A
B
D D B
C
2. Auxiliary views
1) Partial views
(1) Drawing (2) Dispose (3) The partial views need always be labeled.
An arrowhead with a letter to show the direction of projection The name of the view is the same letter. The partial view is bordered with a break line. If the contour of the feature to be drawn in partial view can easily be distinguished from the adjacent features,then full lines may be used as the border of the partial view.
A-A A-A
A A
A A
A A
A
A
A
A
A
A-A
A A A
A
A-A
A
A
A
3. Aligned section
Notes for making an aligned section
A
A-A
(1) It should be identified
the places of the cutting planes the direction of projection the name of cutting planes and aligned section
A-A
A
A
A A
A
The types of sectional views according to cutting manner
1. Single cutting plane 2. Offset section
1) The cutting planes in offset section are parallel to each other 2) Label (1) It should be identified the places of the cutting planes and it’s bends with short full line. (2) The name of cutting planes; (3) Two arrowheads to show the direction of projection (4) The name of the sectional view with the same letters 3) Notes for making an offset section (1) In an offset section, the position where two cutting planes intersect exist no edge. (2) Turning cutting planes can not pass through the contour line (3) It is not allowed to appear incomplete element on the drawing