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HDenkie 发表于 2016-1-8 21:41
谢谢你的回复指点。
ISO1101我有看过,也听到过圆的轮廓度就是圆度的说法,只是有些不太理解:
形位公差 ...
A profile is an outline of a surface, a shape made up
of one or more features, or a two-dimensional element
of one or more features. Profile tolerances are used to
define a tolerance zone to control form or combinations
of size, form, orientation, and location of a feature(s)
relative to a true profile. Depending upon the design
requirements, profile tolerance zones may or may not
be related to datums. A digital data file or an appropriate
view on a drawing shall define the true profile. A true
profile is a profile defined by basic radii, basic angular
dimensions, basic coordinate dimensions, basic size
dimensions, undimensioned drawings, formulas, or
mathematical data, including design models. Where
used as a refinement of a size tolerance created by
toleranced dimensions, the profile tolerance must be
contained within the size limits.
首先,理论形状的定义是多样的;无论是曲面还是曲线、
圆或者半圆,平面或者直线只是其中较特殊的一种;
比如按GB,半圆,标注轮廓度3且无基准,评价的时候
只需要能找到某个圆弧,D3的球在此圆弧"滚“过去,能包络所有
实测半圆弧点,那轮廓度就是合格的;
其他情况请依次类推想像;
补充内容 (2016-1-11 18:51):
补充一点吧,原来说的可能不是很准确:
半圆,标注basic dimension R10 ,轮廓度3且无基准,评价的时候
只需要能找到R10弧,D3的球在此圆弧"滚“过去,能包络所有
实测半圆弧点,那轮廓度就是合格的;
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