Dear All,
First of all many thanks for the interest you shown in this topic. Of course this geometry is not a simple square block :) as many exercise you find in GD&T book.
Cr7 ; The idea is to inspect the part by CMM using cilindrical probe will be used to pick the points around the whole...
Dear GD&T experts,
I was in trouble to understand if I can define in the drawing a primary datum starting from a datum feature edge.
The particular shape of this washer do not allow me to select a plane as primary datum feature.
I did not find any example so far. Is that correct following...
Dear All,
I've trouble to setup a proper DRF for the part reported in the picture. The datum concept here is set a DRF in order to use the conical surface as secondary axis in order to control the location of the cylindrical hole respect to it.
Do you think that what is set up is correct...
Dear Both,
Thank you very much for your replies.
Drawoh, My intention is to realize the best tolerance strategy in order to dimension the part that will be located in the fixture ( only temporary ) during assembly operation through mounting holes.
Coming back to the diamond shaped and round...
Hello Guys,
I need your help in order to clarify my doubts in term of Datum Setting.
Supposing that I've a complex part ( maybe Die Casted or Injection Molded)....In order to set a valid datum reference frame which is the best choice among the following three options?
- Use 2 holes as...
Dear All,
I'm currently looking to the best tolerance strategy for a complex Diecast part as shown in the enclosed simplified 2D sketch Let me better specify some background on my thread.
Supposing that I've a complex die casted part with 3 external holes on ear bracket that can be used by...
Hi CheckerHater,
Many thanks for your quick reply! I saw the picture you have enclosed... I can't understood why the picture shows some basic dimension and some reference without... do you know why?
Thanks again!
keep in touch
Filippo
Dear all,
I need to know if there are substantial differences on how datum target position must be indicated in the drawing comparing ISO and ASME standard. As far as I remember the position of a target datum point must be indicated with basic dimensions. Is that true also for ISO GPS standard...
Dear All,
hope you can help me to clarify the confusion about the introduction of ISO 8015:1989.
Suppose that in my drawing title block there is not any statement regarding to this norm ( ISO 8015) and , as consequences, the use of independency principle introduced by this standard.
Suppose...
Dear All,
I have only one simple question. What would happen if no specific requirement is indicated in the drawing for datum A? In other words keeping the parallelism while removing flatness 0.007?
How the guy who may check the part in production can locate datum A considering ISO standard...
Dear Guys,
Many thanks for your comments on this topic.
Based on your suggestion i've just update my drawing. Please let me know if it is correct now.
Looking forward any further comments.
Thanks!
Filippo...
Dear All,
I have another question regarding profile of a surface specification considering GD&T rule.Please refer to the attached picture to have a better understanding of my following explanation.
In the picture you can see a simple cover with a sort of triangular sealing protusion. I need to...
Dear Both,
Thank you so much for your very usefull reply! Just to better clarify my thought herebelow one possible simplifed scenario.
Suppose that i need to calculate a minimun distance on a gear box from one of the gear and the sorrounding surface of the box.
Suppose also that the gear is...
Hello Everybody,
I have some difficulties to understand how consider Shaft and Holes on GD&T Assembly stack analisys (WCC)in case I'm doing radial stack vector and the two parts are coupled with interference fit. Which dimension should I Consider? Could you kindly provide some examples?
Do you...
Dear Both,
Many thanks for your very quick reply!
Now the situation is more clear. So I will proceed to add basic dimension for locate the tollerance zone to the basic datum as stated in the feature control frame.
In case the shape of the slot will become very complex, as instance an irregular...
Here attached picture.Sorry i'm new to this forum! [glasses]http://files.engineering.com/getfile.aspx?folder=9179c692-44ff-4e3f-81d5-493a50ab4e93&file=profile_tolerance.jpg
Dear Guys,
Hello to everbody who read my post.
I need to understand if the use of profile tolerance fully define the shape and orientation of this slot as per attached picture.
If not you think that I need to add basic dimensions? I'm in trouble to define basic dimensions to these datums as...
