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  1. Quince

    Establishing Centerline Datum of Impeller Casting?

    "SDETERS (Agricultural) 19 Jun 09 15:51 That is one cool Model. May I ask what Software it was modeled in. Sorry for the off topic but it is a cool model." No problem, it's modeled in Solidworks, although I can't take the credit, I've "inherited" it from one of our Engineers who isn't with...
  2. Quince

    Establishing Centerline Datum of Impeller Casting?

    Hi All, I discussed the idea of Datum Target in the casting with the machinist I'm working with. The geometry doesn't allow any obvious locations to do this, but we think the "Root" of each Flute, or the central "Hub" of the part may be the best reference points. His idea was to control the...
  3. Quince

    Establishing Centerline Datum of Impeller Casting?

    I follow you, yes, that example is closest to my situation. Will be interested to see if anyone might have another view on it, but I'm otherwise liking this method. Thanks B
  4. Quince

    Establishing Centerline Datum of Impeller Casting?

    Would it be incorrect to: 1) dimension the outside diamters of the two cross sections (one at each end of the impeller), and label each of those O.D.s "Datum A", and "Datum B" respectively. 2) Draw a centerline on the impeller which represents the line intersecting the two points described by...
  5. Quince

    Establishing Centerline Datum of Impeller Casting?

    I have an impeller I'm having cast and then machined. The "as cast" drawing is where I need to establish a Center-line Datum which will be used to guide the machining of the hubs (one each at nose and tail of impeller). Outside Diameter Measurements of the Flutes are taken at two different...
  6. Quince

    Bearing Life Test Design

    Hi All, I attended a seminar on HALT several years ago, but we never implemented it where I worked. Since then, I'm stuck with designing a "life test" for a water lubricated bearing. The various supplier sites offer no help in terms of standards they build to (and I could test to). Breadcrumb...

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