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DRAWING CONVENTIONS II
工程图的习俗
best practices
最佳范例制定
DRAWING CONVENTIONS II
工程图的习俗
©HENNING RICHTER 2018
BAD/不好 BETTER/更好
WRONG/错误 RIGHT/正确
Place dimension values at the center of
dimension lines, if possible
尽可能地将尺寸值置于尺寸线中间。
Extend center marks over the feature’s
boundaries. Don’t stop the center line at
the edge.
将中心线延长至特征边界外。不要让中
心线刚好只到边界线上
DRAWING CONVENTIONS II
工程图的习俗
©HENNING RICHTER 2018
WRONG/错误 RIGHT/正确Use “∅” on holes/cylinders and “R” on radii.
Diameters are for closed circular shapes
whereas radii are for circle segments.
使用“∅”标注孔和圆形特征,使用“R”
标注圆弧或圆角的半径。直径是标注封闭
的圆形,而半径是标注圆弧片段。
WRONG/错误 RIGHT/正确
Use monochrome representation only.
Technical drawings are supposed to be
reproducible as black & white printouts, so the
usage of colored lines or notes is not allowed.
用单色线标注。工程图纸需要能在黑白打印
机上复印,因此标注线和注释不能是彩色的。
DRAWING CONVENTIONS II
工程图的习俗
©HENNING RICHTER 2018
Use break lines for long detailed
parts. Long parts that don’t fit in
the drawing at the given
orientation should not just be
scaled down if that makes details
hard to read. Consider using break
lines to shorten the parts by hiding
redundant information if their
complete geometry is displayed in
other views.
比较长的部件特征使用折断线。
比较长的部件会超出图纸,如果
缩小视图的比例会导致部件很小
不便查看零件细节,建议使用折
断线,将部件中间冗余或特征相
同(在其他视图已经完全展示)
的部分隐藏,从而缩短部件长度。
BAD/不好 RIGHT/正确
DRAWING CONVENTIONS II
工程图的习俗
©HENNING RICHTER 2018
BAD/不好 BETTER/更好Mark corresponding features (like hole patterns)
with combined center lines. Combined center
lines reduce the amount of dimensions and help
understand functional interdependencies.
使用结合的中心线标记相关联的特征(如孔
位)。使用结合的中心线可以减少标注的数
量并让其相关性更好理解。
Don’t rotate flipped views. In a
sequence of views from flipping the
part over one axis, rotation over a
second axis must be avoided.
不要旋转翻转的视图。同一系列
的视图应该由同一旋转轴产生,
而不能有第二根旋转轴。
WRONG/错误 RIGHT/正确

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Drawing conventions II

  • 1. DRAWING CONVENTIONS II 工程图的习俗 best practices 最佳范例制定
  • 2. DRAWING CONVENTIONS II 工程图的习俗 ©HENNING RICHTER 2018 BAD/不好 BETTER/更好 WRONG/错误 RIGHT/正确 Place dimension values at the center of dimension lines, if possible 尽可能地将尺寸值置于尺寸线中间。 Extend center marks over the feature’s boundaries. Don’t stop the center line at the edge. 将中心线延长至特征边界外。不要让中 心线刚好只到边界线上
  • 3. DRAWING CONVENTIONS II 工程图的习俗 ©HENNING RICHTER 2018 WRONG/错误 RIGHT/正确Use “∅” on holes/cylinders and “R” on radii. Diameters are for closed circular shapes whereas radii are for circle segments. 使用“∅”标注孔和圆形特征,使用“R” 标注圆弧或圆角的半径。直径是标注封闭 的圆形,而半径是标注圆弧片段。 WRONG/错误 RIGHT/正确 Use monochrome representation only. Technical drawings are supposed to be reproducible as black & white printouts, so the usage of colored lines or notes is not allowed. 用单色线标注。工程图纸需要能在黑白打印 机上复印,因此标注线和注释不能是彩色的。
  • 4. DRAWING CONVENTIONS II 工程图的习俗 ©HENNING RICHTER 2018 Use break lines for long detailed parts. Long parts that don’t fit in the drawing at the given orientation should not just be scaled down if that makes details hard to read. Consider using break lines to shorten the parts by hiding redundant information if their complete geometry is displayed in other views. 比较长的部件特征使用折断线。 比较长的部件会超出图纸,如果 缩小视图的比例会导致部件很小 不便查看零件细节,建议使用折 断线,将部件中间冗余或特征相 同(在其他视图已经完全展示) 的部分隐藏,从而缩短部件长度。 BAD/不好 RIGHT/正确
  • 5. DRAWING CONVENTIONS II 工程图的习俗 ©HENNING RICHTER 2018 BAD/不好 BETTER/更好Mark corresponding features (like hole patterns) with combined center lines. Combined center lines reduce the amount of dimensions and help understand functional interdependencies. 使用结合的中心线标记相关联的特征(如孔 位)。使用结合的中心线可以减少标注的数 量并让其相关性更好理解。 Don’t rotate flipped views. In a sequence of views from flipping the part over one axis, rotation over a second axis must be avoided. 不要旋转翻转的视图。同一系列 的视图应该由同一旋转轴产生, 而不能有第二根旋转轴。 WRONG/错误 RIGHT/正确