GD&T Tutorial 24.5: Datum Shift

[@sahubarsathik6097]

hello sir,
i have a query. in the last example you have shown in this video,you told MMB of gauge is MMC-geo.tol.That is 40-0=40.i have a doubt being EFOS,MMB of the gauge shall be MMC+geo.tol rite?that is 40+0=40.could u pls correct if i am wrong?

[@somisettyharish2145]

Even I got the same doubt

[@maheshjadhav6479]

I like your videos, But I have one query, maximum material boundary for 39-40 is 40+0 right, U said 40-0 in video. Please clarify..!

[@jayakumarv6055]

Hi Sir.
How to calculate the position for the Threaded Holes with MMC. Because in Threaded hole they will mention hole as M6 or M8. In that how we know which is MMC Or LMC of the Threaded Holes.
Thank you

[@PalaniKailash]

for threaded holes we don't specify MMC and LMC

[@mukesh23378]

@@PalaniKailash but in ur Fixed fastener video, u mentioned MMC to TOP on threaded hole

[@MrSipi1988]

@@PalaniKailash I thought the same but you do it in this vid
ruclips.net/video/4d_yevZRxIk/видео.html

[@dineshkesavan3981]

Palani sir can you explain how secondary and tertiary datum maximum material boundaries act with calculation. My friends each one have different opinion about B,C datum boundaries. confusing

[@sathishrosario]

Hello,
With V.C of dia 7.3 - 4 pin, RMB itself the component will approve. Then what is the use of datum shift.
Generally we used to consider the counter part and provide tolerance for both parts to assemble in all condition (datum at MMC and feature at MMC) within tolerance range.
Kindly clarify.

[@gildliu7457]

Hi Sir,
Could you please share the slides you made for these videos like you used to do? I really appreciate your effort.
Thank you very much.
Best Regards.

[@sthenn1]

Hi I understand the concept well but not when do we use it ? Could pls explain that by the way all your videos are insightful..keep up the good work.

[@PalaniKailash]

As soon as possible

[@sreenivasarajugorinta4658]

Hi sir,
suppose we are manufacturing 1or 2 components only, manufacturing gauges and checking with gauge is costly, with CMM how they will measure, if posiilble can you make some more videos
on datum shift.

[@PalaniKailash]

This concept of datum datum shift is used in mass production. for 01 or 02 parts we use RFS and RMB so we don't get datum shift.
However, in CMM with model data it can be checked

[@sreenivasarajugorinta4658]

Thanks sir

[@vigneshvisvanathan5747]

Nice Explanations

[@vinnu236]

Sir I,m confused of this Datum shift tolerance sir.... Help me in this sir.

[@PalaniKailash]

Will post another video shortly

[@vinnu236]

@@PalaniKailash thanks sir.

[@pallelapraveen5437]

Hello Sir, Hope your are doing well and safe, I would like to thankyou for taking your valuable time and efforts for explaining GD&T. Sir a small request from my end, this video is a bit confusing can you come up with some simple way to explain this same thing, thankyou in advance, may god bless you.

[@PalaniKailash]

Planning to make few videos on Datum shift, you have to wait

[@ankitpatelab365]

ruclips.net/video/_YYZdJU6Nl0/видео.html&ab_channel=QuintCrispin

[@thakursaab4050]

It wasn’t helpful , if you could please help visualizing datum shift. Maybe through use of CAD otherwise it’s hard to understand this concept

[@PalaniKailash]

Thank for your feedback

[@mahendra.kagane6657]

thanks

[@PalaniKailash]

👍

[@vigneshvisvanathan5747]

Nice Explanations