Madhu454
Mechanical
- May 13, 2011
- 129
Hi All,
Few months back I saw a tip on profile of a line with datum referred. The drawing uses profile of a line with datum A to control the line elements of the surface , also the line elements are located to the datum A with basic dimension. Since each line elements are located by basic dimension to datum A, the entire surface of the part is controlled. It is as good as using profile of a surface instead of profile of a line. My opinion is to use profile of a surface itself instead of using profile of a line and confusing the people.
From the above explanation we can come to a conclusion that, using the datum’s in Profile of a line to locate the line elements can be avoided. Does anyone have different opinion?
Now using the datum’s in Profile of a line to control the orientation of the line elements wrt datum’s, In such a case instead of using the profile of a line, we can use any of the required orientation controls say parallelism, and use the text EACH ELEMENT beneath the FCF. This method will be straight forward instead of using profile of a line with datums to control the orientation.
I heard that using the datum’s with profile of a line is very rare, is that true? Also I would like to know any such practical example where we must go for profile of a line with datums?
I would like to know more about the usage of datum’s with profile of a line ? Can anyone help me on this.
Madhu
Few months back I saw a tip on profile of a line with datum referred. The drawing uses profile of a line with datum A to control the line elements of the surface , also the line elements are located to the datum A with basic dimension. Since each line elements are located by basic dimension to datum A, the entire surface of the part is controlled. It is as good as using profile of a surface instead of profile of a line. My opinion is to use profile of a surface itself instead of using profile of a line and confusing the people.
From the above explanation we can come to a conclusion that, using the datum’s in Profile of a line to locate the line elements can be avoided. Does anyone have different opinion?
Now using the datum’s in Profile of a line to control the orientation of the line elements wrt datum’s, In such a case instead of using the profile of a line, we can use any of the required orientation controls say parallelism, and use the text EACH ELEMENT beneath the FCF. This method will be straight forward instead of using profile of a line with datums to control the orientation.
I heard that using the datum’s with profile of a line is very rare, is that true? Also I would like to know any such practical example where we must go for profile of a line with datums?
I would like to know more about the usage of datum’s with profile of a line ? Can anyone help me on this.
Madhu
