本帖最后由 aysuio 于 2015-10-8 03:27 编辑
ValleyViews 发表于 2015-10-8 02:22 static/image/common/back.gif
四海之内皆兄弟也。
Talking about your explanation, I think that every sent ...
大侠，多谢跟我讨论这个问题。：D 小弟联系方式已经站内信PM大侠:)
As for the problem of line element, I still consider it as a 2D element. I may misunderstand something. I will appreciate your instruction if you can give me more explanation about it.
I just got an idea about this problem. Did you want to tell me that the line elements measured in the actual components can be torqued or twisted, so they may have 3 dimensions?
好好学习下。
本帖最后由 ValleyViews 于 2015-10-8 17:35 编辑
aysuio 发表于 2015-10-8 02:47 static/image/common/back.gif
大侠，多谢跟我讨论这个问题。：D 小弟联系方式已经站内信PM大侠
As for the problem of line eleme ...
我个人很喜欢这个帖子，其问题本身的重要性暂时可以超过其结论。还希望楼主大侠帮助我和大家共同学习提高。
Put it in this way, one single line element in a specified view could be considered as a 2d line, but multiple line elements in same view and in certain interval can establish a cluster of lines that can be considered as a kind of 3d image. Furthermore, multiple cross line elements in front view and side view can set up a net construction image that will be able to describe the flatness well enough. That's why some persons think that the new version Y14.5 would regulate the cross views straightness equal to flatness of a planar surface.
ValleyViews 发表于 2015-10-8 16:07 static/image/common/back.gif
我个人很喜欢这个帖子，其问题本身的重要性暂时可以超过其结论。还希望楼主大侠帮助我和大家共同学习提高 ...
Now I understand your explanation of 3D. :) Thanks a lot
头疼
我怎么觉得0.6还好理解。两条直线可以决定一个平面，但平面可以上下浮动啊
luxiang821 发表于 2015-10-4 10:31 static/image/common/back.gif
我明白你意思了，假定孔相对A垂直度为零，
孔处于最大实体状态为30，
孔心距20，位置度要求为零，考虑到 ...
赞一个
aysuio 发表于 2015-10-7 05:02 static/image/common/back.gif
Hi, Valleyviews,
You were saying the fig in Y14.5-2009. And yes, it is talking about this problem ...
Think about this problem really helps. I have to say that thank you for your good job. Have a nice weekend,
第一题，应该是考虑了最大的尺寸界限，两直线度的公差要求，显然要小于尺寸公差，取最大，故是0.6，第二题，4.6；相对C基准的尺寸，只有20，以及位置度要求的偏差，减去孔的最大半径，可得4.6
学习啦