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  • Users: BlaineW
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  1. BlaineW

    Resources to keep up with modern assembly methods.

    Short story... Company I work for recently had a fairly bad visit from a customer saying something along the lines of "Your assembly lines look 30 years old". Directive from management...need to look for new technology to update our factory. Realizing I haven't done a good job of keeping up...
  2. BlaineW

    Tricky Math Problem

    Ok, looking for a little help with an analysis I'm doing for work. I can iterate to solve individually but my challenge here is that I'm trying to do it for a large population of random points that have been generated as part of a tolerance sensitivity analysis done in excel on a linkage...
  3. BlaineW

    Press fixture design

    Looking for opinions here. Small Die set press to stake two parts together, frame is about 3" tall. Would it be preferable to have the nest on a slide that would be top loaded and then pushed into position in press, or front loaded directly into position on the press. Having debate with...
  4. BlaineW

    How to know when your coating/potting is cured?

    Not sure if this is the right subforum, but as a mechanical guy I was hoping someone could point me in the right direction. When using a temperature cured two part silicone potting or 1 part conformal coating what methods can be used to verify/validate a cured state? I've tried technical data...
  5. BlaineW

    Velocity of a cap on a pressurized chamber

    My inability to google the missing pieces has left me seeking help from the community. I'm working on a concept project and unfortunately I can't get into too many details. Imagine a scenario of a pressurized chamber that has a cap of some sort. Imagine it is suddenly released and allowed to...
  6. BlaineW

    Testing Method for rubber gasket seal

    I have a product that consists of two handle halves screwed together with a rubber gasket compressed in a channel between them. There are also 3 rotary spring seals over shafts on one handle half. I am looking for suggestions on the best way, in a manufacturing clean room environment, to do an...
  7. BlaineW

    Ferrule Crimp Development

    Good morning gentlemen, We are trying to develop a manufacturing process to attach a round stainless ferrule onto a 7 strand braided cable in an assembly. The hex dies that worked previously in prototypes are now currently causing failures. We are sort of at a loss to explain why we are...
  8. BlaineW

    Chicken or the Egg??? Which way to process?

    Looking for a first instinct suggestions on how to process this. Without going into too much detail here is what I have. Roughly a cylinder w/ one side needing to be milled, other turned. A .002 total tolerance partial 12" dia that has to be circle interpolated and is my datum and is only...
  9. BlaineW

    Hobbing a "Grob" Spline

    I am trying to hob a "Grob standard" spline into a part. It is a very obscure type of straight sided tooth form that isn't used very often. We have a cutter that successfully formed the spline on a mostly manual machine several years ago. We are now trying to make it on a newer and more...
  10. BlaineW

    Blistering in hard anodize on 7075 aluminum

    Has anyone seen small bubbling/blistering on a hard black anodize when doing 7000 series aluminum. I've looked around on the net and found many instances of it, but none of the answers or reasons for why it happens or how to fix it agree with one another. Thank you for your help
  11. BlaineW

    Calculating Knurled Inteference Fits

    My company has various shaft/hub press fits of varying diameters where the shaft is knurled. Shaft has a bore through it, steel, in some cases induction hardened. Hub is a powdered metal. In some cases the hubs occasionally crack, and in some other cases, the shaft bore closes down and needs...
  12. BlaineW

    Black Oxide Plating Wastewater Treatment

    Not sure if this is the best spot to put this topic in, but here it goes anyway. I'm looking for some advice on Alkaline waste water treatment. The current setup gets ph balanced and discharged into the city sewer system, however, we are moving plant locations in a month and the new site does...
  13. BlaineW

    Implied Concentricity tolerance on coaxial diameters???

    My question regards a shaft with a through bore and several steps of diameters on the OD, two of which are bearing surfaces. I am a fairly young engineer and somewhat new to GMT, and I'm dealing with a lot of old prints made back in the 80's and 90's. Most of them only contain size tolerances...

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