Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

Register Log in
  • Congratulations waross on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Go_Bucks

    Converting Straightness and Roundness to Cylindricity

    Hello, Many of our older product lines use straightness and roundness to control cylindrical features. Moving forward, we will be using cylindricity so that taper is also controlled. Is there an efficient way to convert straightness and roundness dimensions into cylindricity? Thanks.
  2. Go_Bucks

    KCC of Cylindricity Vs Straightness and Circularity

    @drawoh, for the record I would prefer cylindricity. The way it was described to me, our suppliers have been using straightness and circularity for so long it was "easier" to not change it and just add the KCCs to it to the current spec. I don't fully understand the reasoning, but I like to...
  3. Go_Bucks

    KCC of Cylindricity Vs Straightness and Circularity

    Hello, The company's global team for a product family is calling out cylindricity as a KCC moving forward. Due to supplier relations/history on these products for our specific plant, we will be using straightness and circularity as KCCs. What are everyone's thoughts on this? Are we losing any...
  4. Go_Bucks

    Flatness MSA

    Hello, I am doing an MSA on our measurement process for flatness. We are using an inverted gauge installed under a granite block. The issue I have is that when measuring flatness, no two operators are going to be hitting the exact same points. I can create a fixture to ensure they are hitting...
  5. Go_Bucks

    Understanding and Measuring Flatness Spec

    Thank you for each of your replies. CheckerHater, would it be correct in saying the entire surface flatness is the "Global Flatness" and flatness per unit of area is the "Local Flatness"? Is there a better way to measure the local flatness of a part than using an inverted gauge under a granite...
  6. Go_Bucks

    Understanding and Measuring Flatness Spec

    Hello Everyone, I recently started at a new plant and we seem to be having flatness issues with two of our parts. The two parts have a flatness spec that reads .0002/IN, while our other products are all .0005 for the entire surface. The quality department says the .0002/IN can just be...
  7. Go_Bucks

    Understanding and Measuring Flatness Spec

    Hello Everyone, I recently started at a new plant and we seem to be having flatness issues with two of our parts. The two parts have a flatness spec that reads .0002/IN, while our other products are all .0005 for the entire surface. The quality department says the .0002/IN can just be...
Back
Top