A rather technical question.
How do you rate countersinks and countersinks?
Normally, the diameter of the countersink and its depth should be specified in text.
However, there are symbols on 3D software that simplify writing (see §)
They are of the American standard ASME Y14.5M
Are they usable in our ISO standards?
Note: I do not have access to the standards, too expensive for my school. Those corresponding to the indications of special dimensions is ISO/DIS 129-1:2012
Hello
For my part, I customized the texts of the symbols for the piercings. So I don't have these symbols that don't necessarily mean anything to everyone, but texts.
If you're interested, you'll find the file that goes well in this question: http://www.lynkoa.com/forum/cao/cotation-percages
Hello
I saw a little bit of everything actually.
And when you see everything, it's because it's not clear or that there isn't really a standard
Hi
Where I work, we are on both ISO and ASME, (same for projection views, it depends if the shot is made by french or Americans, long live international ^^ boxes). But normally in ISO you have to make a cut and indicate the depth. After that, it's understandable to measure a note on a top view with ø12 Prof 4 And it's easier if you have more space on your plan.
I have dabbled with different companies with which we have worked: there is a marked preference for a clear text in French: lamage dia prof.
The best thing to do seems to me is to customize the configuration file of the "symbol for drilling" function.
It saves time at the rating by having something that correctly follows the changes.
Even the American ones are quoted in text, and I would say that the symbols are to be used when you have a single supplier who knows them and do everything at home.....
Hello
I never write a text.
I always put the Ø and depth dimensions of the counterbores.
For the milling, I indicate the angle and the Ø at the top of the cone.
S.B
Hello
There are several schools. Personally, I make a dimensional and not symbolic dimension on my plans (diameter and depth). This has the merit of being clear and in addition it allows you to assign a tolerance to it. The symbols are to be left to the unparameterized 2D planes and not linked to a 3D.
In addition, it is in your interest to do the dimensioning related to the 3D in order to avoid errors of consistency between the 3D and the 2D.
Then you can add a tolerance of coaxiality or position of the countersink in relation to the hole.
There you have it, I hope to have shed some light.
David
PS: I have 15 years of experience in listing (Valeo/Bosch)