Good analogy for the "Dog-Lovers" as shop-workers, the use of Profile is Awesome! T J (Tom) Vanderloop, Author, Mechanical Designer, & Consultant: ATEA, AWS & SME Member
LOVE the video. One question - despite the side of the feature that the arrow points to, is the number following the U symbol always OUTSIDE of material? Example - what if the scenario was pointing to the inside of the feature? Lastly - if you didn't reference datum features, would the profile become only a feature size control? Thanks!
Yes, the number following the U symbol is always outside the material. So if it were pointing at a hole, the number following the U symbol would allow the hole to get smaller. It can indeed control the size of a feature, but I still would not call it a feature of size. A feature of size always has a coordinate tolerance controlling the size.
Is there a method of reporting profile error using variable data? Historically, the formula used was max - min if crossing nominal or if all positive or negative error is observed, 2*max deviation from nominal.
I have used the method of reporting my tolerance / my deviation from tolerance. Example for bilateral would be +/- 0.25 / over / actual result. The result could be anything from + to - 0.25. Also - if you wanted to, you could report in the basic feature box the range that you found. Example: Feature is 40mm and you report 39.8 - 40.22 (all acceptable applying that tolerance). Make sense?
I forgot - when I do report actual readings in comparison to the basic features I do NOT accept or reject that data. The accept reject criteria is reported in the profile callout.
Good analogy for the "Dog-Lovers" as shop-workers, the use of Profile is Awesome!
T J (Tom) Vanderloop, Author, Mechanical Designer, & Consultant: ATEA, AWS & SME Member
LOVE the video. One question - despite the side of the feature that the arrow points to, is the number following the U symbol always OUTSIDE of material? Example - what if the scenario was pointing to the inside of the feature? Lastly - if you didn't reference datum features, would the profile become only a feature size control? Thanks!
Yes, the number following the U symbol is always outside the material. So if it were pointing at a hole, the number following the U symbol would allow the hole to get smaller.
It can indeed control the size of a feature, but I still would not call it a feature of size. A feature of size always has a coordinate tolerance controlling the size.
Is there a method of reporting profile error using variable data? Historically, the formula used was max - min if crossing nominal or if all positive or negative error is observed, 2*max deviation from nominal.
I am not familiar with a standard method of reporting the data. I am guessing that would be determined by whoever requires the data.
I have used the method of reporting my tolerance / my deviation from tolerance. Example for bilateral would be +/- 0.25 / over / actual result. The result could be anything from + to - 0.25. Also - if you wanted to, you could report in the basic feature box the range that you found. Example: Feature is 40mm and you report 39.8 - 40.22 (all acceptable applying that tolerance). Make sense?
I forgot - when I do report actual readings in comparison to the basic features I do NOT accept or reject that data. The accept reject criteria is reported in the profile callout.
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why the heck would you take a pic of dog crap and put it in a video...sick