工程制图第6章简化与规定画法
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网状物、编织物及机件上的滚花部分,应用粗实 线完全或部分地表示出来。
Knurling m0.8 滚花
Straight m0.8 直纹
Cross-hatch m 0.8 直网纹
Diamond m 0.8 斜网纹
英国图例
请点击鼠标左键显示后面内容
Simplified Representation 简化画法
(1)
(2)
肋按纵向剖切 时不画剖面线
请点击击解答显示其内容
回转体 上均匀 分布的 画出肋不切时画画出。和在面,出孔剖上应 。旋。转到 剖切面 画出。
2. Sketch full sectional views for each drawing. 画出全剖主视图。
(1)
(2)
请点击解答显示其内容
Representation of Rib 肋板表达
6. When the view cannot express plane well, plane symbol is used to indicate it .
当图形不能充分表达平面时,可用平面符号 (用两条细实线画出对角线)表示。
BB 或(or) B
该平面未采用断面
小平面未用左视图或 断面图表达,则应画
较长的机件(轴、杆等)沿长度方向的形状一致或按一定的规律变化 时,可断开后缩短绘制,断裂处用波浪线表示,其尺寸仍按实长标注。
Sign trim size
Sign trim size
Sign trim size
Staff 棱柱形长杆
断开后只
画其两端
Shaft 圆柱形长轴
Tube 圆柱形长管
英国图例
断开后斜度应度一应致一致。 请点击鼠标左键显示后面内容
将孔转到 剖切面位 置再画出
将肋板转到 剖切面位置 后再画出
请点击鼠标左键显示后面内容
英国图例
将孔转到 剖切面位 置再画出
Exercises 练习题
1. Analysis and find out the mistakes from sectional views and correct the front view. 分析并找出剖视图中的错误,画出正确主视图。
7. It is permitted to omit cutting symbols when it would not be mistaken, but the labeling of the cutting positions and cuts shall obey the rules.
Small fillets or 45°chamfers are permitted to omit, but they should be illuminated in engineering requirements.
3. Partial view of symmetrical structure (such as key slot )in a part can be expressed by drawing the structure solely.
Intersection of small structures on a part can be simplified or omitted on other views if it has been expressed clearly in one view.
在不致引起误解时,零件图中的移出断面图,允许省略剖面符号,但剖 切位置和断面图的标注必须遵守规定。
在不致引起误解时,零件图中的小圆角、锐边的小倒圆或45°小倒角允 许省略不画,但必须注明尺寸或在技术要求中加以说明。
省省略略剖剖 面面符符号号
英国图例
省略小圆角 省略小圆角
请点击鼠标左键显示后面内容
省略倒角
Incorrect
Correct
If the cutting plane passes crosswise through a rib or web, spoke,thin wall,etc. the member should b画e 剖se面ct线io。n-lined.
若沿横向剖切肋板、 轮辐、薄壁等结构 时应画剖面线。
2. Sketch full sectional views for each drawing. 画出下列各立体的全剖视图。
请点击题目显示其内容
本章结束
谢谢您的认真学习!
前一页
退出
1 . Analysis and find out the mistakes from sectional views and correct the front view. 分析并找出剖视图中的错误,画出正确主视图。
按小端的 宽度画出
请点击鼠标左键显示后面内容
Conventional Representation 规定画法
1. Symmetrically located ribs or spokes are shown in section in revolved positions to show the ribs true size. Rib’s or spokes are not section-lined in section.
to projective plane, its projection can be expressed with a circle or arc directly.
机件上斜度不大的结构,如在一个图形中已表达清楚,则 在其他图形中可按小端画出。
与投影面倾斜角度30°的圆,其投影可用圆或圆弧来代替。
均按圆 形画出
2. A part with symmetrically located ribs, spokes and holes are shown in section with those symmetrically features rotated to the cutting plane.
当机件回转体上均匀分布的肋、轮辐、孔等结构不处于剖切面 上时,应将这些结构旋转到剖切面上画出。
Simplified Representation 简化画法
省略相贯线
键槽与轴相贯线
Simplified Representation 简化画法
省略剖面线
为方便注尺 寸需画虚线
Conventional Representation 规定画法
Conventional Representation 规定画法
1. If a part obtains some same features(such as gear, slot etc.)
which are distributed according to certain rules, it is only needs to
draw several whole features and use center line to indicate their
左视小图平表面达图结出表构相前达交部,细则实应线画出
小平面未采用断
出相交细断实面线图表达出前用部断面图来表达 小平面结构四棱锥台的平面
Square(用断
面图表达断面
面图表达,则应画 出相交细实线
请点击鼠标左键显示后面内容
形状英为国正图方形例)
Simplified Representation 简化画法
对于机件的肋、轮辐及薄壁等,如按纵向剖切,这些结
构都不画剖面符号,而用粗实线将它与其邻接部分分开。
Rib 肋板不画 剖面符号
Rib 肋板 不画 剖面 符号
Cutting plane 剖切面位置
Cutting plane 剖切面位置
源自文库
请点击鼠标左键显示后面内容 英国图例
Conventional Representation 规定画法
Simplified and Conventional Representation
简化画法与规定画法
Simplified Representation
简化画法
Conventional Representation
规定画法
Exercises
练习题
请点击相应标题显示其内容
Simplified Representation 简化画法
60° 6 teeth
请点击鼠标左键显示后面内容
英国图例
Simplified Representation 简化画法
2. Long parts (such as shaft, pole and so on) varying profiled bar length by length by a certain rule can be shorten to represent The conventional representation of breaks is used to shorten.
BS 308 states that the following are NOT sectioned even if they are ‘cut’ longitudinally.
英国标准BS308规定:当沿纵向剖切下列机件时,均按不剖画。
Shafts Keys Rivets Pins Dowels Cotters Studs
Simplified Representation 简化画法
4. The view of symmetrical part can be drawn a half or quarter of it, two continuous thick lines paralleling with each other should be drawn on the two ends of center lines. 在不致引起误解时,对称机件的视图可只画一半或四分之
零件上对称结构(如键槽)的局部视图,可单独画出该结构的图形。 机件上较小的结构所产生的交线(相贯线),如果已经有 一个图形已 表达清楚该结构,则可简化或省略。
单独画出对称结构 键槽的局部视图
已有图形表达该键 槽则可省略相贯线
已有图 形表达 该圆孔 应则省略 相贯线
请点击鼠标左键显示后面内容
英国图例
Simplified Representation 简化画法
center position and label the total number in the part drawing.
当多个相同结构(孔、槽、齿等)按规律分布时,只需画出一个或几个 完整的结构,其余用细实线连接或用细点划线标明中心位置,并注明总数。
6 holes
20 teeth
9 slots
一,并在对称中心线的两端画出两条与其垂直的平行细实线。
上下左右均对称可 只画1/4, 应在中心 线两端加与其垂直 的平行细实线符号
左右对称可只画 半边,应在中心 线两端加与其垂 直的平行线符号
请点击鼠标左键显示后面内容 英国图例
Simplified Representation 简化画法
5. Reticulation material, weaving material and diamond knurling should be indicated with continuous thick lines .
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
8. Structures with small pitch in a part could be drawn according to its small end if expressed in one view.
If circle or arc has the included angle of 30°or less than 30°
请点击鼠标左键显示后面内容
Representation of Rib 肋板表达
英国标准BS 308 有关规定
Conventional Representation 规定画法
纵向剖时 半肋剖板并处省不 略画剖面线
上、。
衬套剖面 线与支架 的剖面线 应有区别
Simplified Representation 简化画法
Knurling m0.8 滚花
Straight m0.8 直纹
Cross-hatch m 0.8 直网纹
Diamond m 0.8 斜网纹
英国图例
请点击鼠标左键显示后面内容
Simplified Representation 简化画法
(1)
(2)
肋按纵向剖切 时不画剖面线
请点击击解答显示其内容
回转体 上均匀 分布的 画出肋不切时画画出。和在面,出孔剖上应 。旋。转到 剖切面 画出。
2. Sketch full sectional views for each drawing. 画出全剖主视图。
(1)
(2)
请点击解答显示其内容
Representation of Rib 肋板表达
6. When the view cannot express plane well, plane symbol is used to indicate it .
当图形不能充分表达平面时,可用平面符号 (用两条细实线画出对角线)表示。
BB 或(or) B
该平面未采用断面
小平面未用左视图或 断面图表达,则应画
较长的机件(轴、杆等)沿长度方向的形状一致或按一定的规律变化 时,可断开后缩短绘制,断裂处用波浪线表示,其尺寸仍按实长标注。
Sign trim size
Sign trim size
Sign trim size
Staff 棱柱形长杆
断开后只
画其两端
Shaft 圆柱形长轴
Tube 圆柱形长管
英国图例
断开后斜度应度一应致一致。 请点击鼠标左键显示后面内容
将孔转到 剖切面位 置再画出
将肋板转到 剖切面位置 后再画出
请点击鼠标左键显示后面内容
英国图例
将孔转到 剖切面位 置再画出
Exercises 练习题
1. Analysis and find out the mistakes from sectional views and correct the front view. 分析并找出剖视图中的错误,画出正确主视图。
7. It is permitted to omit cutting symbols when it would not be mistaken, but the labeling of the cutting positions and cuts shall obey the rules.
Small fillets or 45°chamfers are permitted to omit, but they should be illuminated in engineering requirements.
3. Partial view of symmetrical structure (such as key slot )in a part can be expressed by drawing the structure solely.
Intersection of small structures on a part can be simplified or omitted on other views if it has been expressed clearly in one view.
在不致引起误解时,零件图中的移出断面图,允许省略剖面符号,但剖 切位置和断面图的标注必须遵守规定。
在不致引起误解时,零件图中的小圆角、锐边的小倒圆或45°小倒角允 许省略不画,但必须注明尺寸或在技术要求中加以说明。
省省略略剖剖 面面符符号号
英国图例
省略小圆角 省略小圆角
请点击鼠标左键显示后面内容
省略倒角
Incorrect
Correct
If the cutting plane passes crosswise through a rib or web, spoke,thin wall,etc. the member should b画e 剖se面ct线io。n-lined.
若沿横向剖切肋板、 轮辐、薄壁等结构 时应画剖面线。
2. Sketch full sectional views for each drawing. 画出下列各立体的全剖视图。
请点击题目显示其内容
本章结束
谢谢您的认真学习!
前一页
退出
1 . Analysis and find out the mistakes from sectional views and correct the front view. 分析并找出剖视图中的错误,画出正确主视图。
按小端的 宽度画出
请点击鼠标左键显示后面内容
Conventional Representation 规定画法
1. Symmetrically located ribs or spokes are shown in section in revolved positions to show the ribs true size. Rib’s or spokes are not section-lined in section.
to projective plane, its projection can be expressed with a circle or arc directly.
机件上斜度不大的结构,如在一个图形中已表达清楚,则 在其他图形中可按小端画出。
与投影面倾斜角度30°的圆,其投影可用圆或圆弧来代替。
均按圆 形画出
2. A part with symmetrically located ribs, spokes and holes are shown in section with those symmetrically features rotated to the cutting plane.
当机件回转体上均匀分布的肋、轮辐、孔等结构不处于剖切面 上时,应将这些结构旋转到剖切面上画出。
Simplified Representation 简化画法
省略相贯线
键槽与轴相贯线
Simplified Representation 简化画法
省略剖面线
为方便注尺 寸需画虚线
Conventional Representation 规定画法
Conventional Representation 规定画法
1. If a part obtains some same features(such as gear, slot etc.)
which are distributed according to certain rules, it is only needs to
draw several whole features and use center line to indicate their
左视小图平表面达图结出表构相前达交部,细则实应线画出
小平面未采用断
出相交细断实面线图表达出前用部断面图来表达 小平面结构四棱锥台的平面
Square(用断
面图表达断面
面图表达,则应画 出相交细实线
请点击鼠标左键显示后面内容
形状英为国正图方形例)
Simplified Representation 简化画法
对于机件的肋、轮辐及薄壁等,如按纵向剖切,这些结
构都不画剖面符号,而用粗实线将它与其邻接部分分开。
Rib 肋板不画 剖面符号
Rib 肋板 不画 剖面 符号
Cutting plane 剖切面位置
Cutting plane 剖切面位置
源自文库
请点击鼠标左键显示后面内容 英国图例
Conventional Representation 规定画法
Simplified and Conventional Representation
简化画法与规定画法
Simplified Representation
简化画法
Conventional Representation
规定画法
Exercises
练习题
请点击相应标题显示其内容
Simplified Representation 简化画法
60° 6 teeth
请点击鼠标左键显示后面内容
英国图例
Simplified Representation 简化画法
2. Long parts (such as shaft, pole and so on) varying profiled bar length by length by a certain rule can be shorten to represent The conventional representation of breaks is used to shorten.
BS 308 states that the following are NOT sectioned even if they are ‘cut’ longitudinally.
英国标准BS308规定:当沿纵向剖切下列机件时,均按不剖画。
Shafts Keys Rivets Pins Dowels Cotters Studs
Simplified Representation 简化画法
4. The view of symmetrical part can be drawn a half or quarter of it, two continuous thick lines paralleling with each other should be drawn on the two ends of center lines. 在不致引起误解时,对称机件的视图可只画一半或四分之
零件上对称结构(如键槽)的局部视图,可单独画出该结构的图形。 机件上较小的结构所产生的交线(相贯线),如果已经有 一个图形已 表达清楚该结构,则可简化或省略。
单独画出对称结构 键槽的局部视图
已有图形表达该键 槽则可省略相贯线
已有图 形表达 该圆孔 应则省略 相贯线
请点击鼠标左键显示后面内容
英国图例
Simplified Representation 简化画法
center position and label the total number in the part drawing.
当多个相同结构(孔、槽、齿等)按规律分布时,只需画出一个或几个 完整的结构,其余用细实线连接或用细点划线标明中心位置,并注明总数。
6 holes
20 teeth
9 slots
一,并在对称中心线的两端画出两条与其垂直的平行细实线。
上下左右均对称可 只画1/4, 应在中心 线两端加与其垂直 的平行细实线符号
左右对称可只画 半边,应在中心 线两端加与其垂 直的平行线符号
请点击鼠标左键显示后面内容 英国图例
Simplified Representation 简化画法
5. Reticulation material, weaving material and diamond knurling should be indicated with continuous thick lines .
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
Simplified Representation 简化画法
8. Structures with small pitch in a part could be drawn according to its small end if expressed in one view.
If circle or arc has the included angle of 30°or less than 30°
请点击鼠标左键显示后面内容
Representation of Rib 肋板表达
英国标准BS 308 有关规定
Conventional Representation 规定画法
纵向剖时 半肋剖板并处省不 略画剖面线
上、。
衬套剖面 线与支架 的剖面线 应有区别
Simplified Representation 简化画法