I had a few in the attached PDF but several questions for each scenario, can you explain a little further?
We have 2 pieces of metal colliding, I dont know how else to get a good measure of the impact time or stopping distance. Like I said we recorded on video and watch in slow motion and...
rb1957,
In the included PDF I have a value ( I dont know if its right) for the calculated Force and the impulse; aside from these being correct or not was the method I used not correct?
We do not have scales available but if working this by hand does not produce anything useful I will have to...
What does the lid impact? Without knowing this, I don't believe a meaningful answer can be obtained.
The lid impacts a stop connected to the base, I left it out of the simplified model. When the lid reaches the max opening 90 degrees, for simplicity, I am assuming it hits the hard stop and...
1) For my "Case 2", the force needed to tip the container can be calculated using statics.
You are talking about summing moments correct? Again, this is if the force of the lid is constant but in this scenario the force is not constant, it is an impulse.
4) Knowing the deceleration (Step 3)...
SlideRuleEra,
Thank you for the response but I am not quite understanding your comment.
I may have used the wrong language but my thought process was as follows:
I cannot measure the acceleration of the lid as easy as I can the angular velocity; we achieved this through slow motion video
Once...
Hello,
I read few threads about tipping hazards on here and have used some of the info to attempt a solution.
I have attached a PDF with all of the info and work.
To summarize, we have a container that has a heavy lid and I want to determine if and at what opening velocity the lid will tip the...
Belanger,
Thank you, it helped reading some varying points of view. However, it didnt do a whole lot in the way of clarifying too much. I did key in to your response regarding taking measurements from basic dimensions relative to the datum. So, in my case after checking each hole individually...
Ok, so assuming MMB how do you find the "geometric center" of a 10 hole pattern? I see the example in the ASME14.5 but they are using 4 holes which is a little more intuitive. If I do not have to find the center, how then do I use this 10 hole pattern as a datum used to check other features? I...
Pmarc,
This is a redlined print that the customer is considering. On our side, we are trying to determine if we would be able to check the part if they made these changes. For educational sake could you provide basic info on how RMB or MMB would affect the datum scheme?
Pmarc,
I apologize. Both of the 4 and 3 holes was just an example to get a better understanding.. In either case my dilemma is the same, I cannot think of how to check multiple holes being used as a single datum on a cmm/faro. See attached PDF, it is a redline from our customer who wants to make...
Pmarc,
Excellent, I found it in the spec. So it is obviously allowed now in terms of measuring with faro/cmm since there is no pattern callout is it just treated as if the holes were individual? In other words if I have a 3 hole pattern that the customer is calling collectively datum -B-, when I...
Hello,
So as topic states, 1 of our customer drawings has 4 holes called out as a single datum. Nothing I have read in the ASMEY14.5 standard (I could be missing it) really touches on this issue.
I have basic questions; is it allowed? How would you take dimensions using a datum composed of...
Hello,
I remember reading a few posts on here about people looking for a simple program to bubble PDF documents and image files. I was in this position myself and was forced to buy InspectionXpert even though my office would not be using most of the tools available in InspectionXpert; we still...
hydtools: I agree. I cant explain the reasoning I just no what happens everytime we ask to speak with the customer tp clarify issues.
3DDave & tbuelna: These are great ideas, it never occured to me it may just be a font issue but it makes sense as we too have seen some weird font conversions...
RoleMec: I will definitely look into your ideas. As far as it being a variation form a previous drawing, the drawing has a standard revision block with dates/changes made etc. The current revision level is 'J'. There are not notes on the titleblock referring to this circled 'V'. Yes, for the...
Ctopher: For the most part, the rest of the drawing is defined through GD&T standards.
KENAT: There are no other notes on the drawing regarding internal drawing standards. Virtual condition is a good guess, I will look a little more clsoer at it but my gut tells me it is not for virtual...
Hello All,
I have come across another symbol I am not familiar with and have not been able to find in any GD&T book. I am starting to lean towards "typo" but the drawing comes from a very prominent Automotive customer and I feel like they wouldnt make mistakes too often. So before I put my foot...
