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Type: Posts; User: Cragyon

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  1. Replies
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    Zinc or stainless should be fine unless you're...

    Zinc or stainless should be fine unless you're operating in a high salt environment.

    Usually, there is a thread coating on the fitting threads to help minimize corrosion also it's common to see a...
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    I think too that bolt and nuts are usually thread...

    I think too that bolt and nuts are usually thread cut before case hardening so when cutting more threads tends to less accurate.

    You may need to die or tap the threads several times.
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    Typical NEMA 34 frame stepper motors are rated at...

    Typical NEMA 34 frame stepper motors are rated at more than 30 lb-in and some as high as 1300 lb-in and all weight about the same. Not seeing your challenge in locating one.


    If weight is the...
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    There's a "Forced Air Flow Convection Cooling....

    There's a "Forced Air Flow Convection Cooling. Fan Air Flow Required for Heat Sinking Formulas and Calculator" on Engineers Edge.

    See: Fan Air Flow Required for Heat Sinking Formulas and Calculator
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    If the bearing is sized properly, to the loads,...

    If the bearing is sized properly, to the loads, thermal environment, RPM, etc. ... no, the bearing will not "wear out quickly".
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    Could be a type of grease gun pump.

    Could be a type of grease gun pump.
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    Merry Christmas Everyone!

    Merry Christmas Everyone!

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    "Home is built to code." Assuming you can...

    "Home is built to code."


    Assuming you can see the wood structure I would put eyes on the actual deflection in action.. Get some well fed friends or what ever and have them walk the floor and...
  9. Agree and agree. "The Short Run and Long Run"...

    Agree and agree.

    "The Short Run and Long Run" overview discusses lost jobs but fails to address the individual challenges that comes with that.


    There are so many of us that are not willing to...
  10. Using Engineers Edge 2D Statics Modeler I get.. ...

    Using Engineers Edge 2D Statics Modeler I get..

    2529

    https://www.engineersedge.com/calculators/statics-modeler/statics-2d-modeling.htm#
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    Very creative! Use what you have design and...

    Very creative! Use what you have design and engineering at its best.
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    Every stress-strain plot I've seen was reported...

    Every stress-strain plot I've seen was reported in actual units. I don't think the strain is being report as a % but being converted into a multiple for ease of reading the plot.

    A note would...
  13. Probably using Profile of a Surface/line. See:...

    Probably using Profile of a Surface/line.

    See: https://www.engineersedge.com/catalog/product_info.php/products_id/656/
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    It's best to ask the asker which is "Underwriters...

    It's best to ask the asker which is "Underwriters Laboratory".

    Probably means size variations or number of wires/strands etc... Again, see sentence above.
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    Yes, rated stress of wood is dependent on loading...

    Yes, rated stress of wood is dependent on loading direction relative to grain. Loading perpendicular to grain will cause separate.

    Also, the stress strain curve is incomplete.
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    Looks like a ball screw thread. See bottom of...

    Looks like a ball screw thread.

    See bottom of this webpage: https://www.engineersedge.com/mechanics_machines/ball_screw_design_equations_15235.htm
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    Why would you even model it? Are you 3D printing...

    Why would you even model it? Are you 3D printing the gears?

    If machining, determine gear ratio, specify desired industry standard tooth profile, pitch or whatever diameter needed, AGMA tolerance...
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    Deep drawing or spinning.

    Deep drawing or spinning.
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    Retractable mechanical stop at 120 deg....

    Retractable mechanical stop at 120 deg. increments? Have you considered a programable stepper motor control electronics like Rambo board?
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    Hanging Chain = Parabola Proof

    Proof that a hanging chain fixed at both ends will have the shape of a parabola.
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    Unknown.... I suggest that your organization...

    Unknown.... I suggest that your organization obtain one of these problematic gears and develop a a strategy to better identify when these "bumps" occur and how.

    I would track tooling, machine...
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    You didn't understand or are antagonizing Kelly...

    You didn't understand or are antagonizing Kelly (which i don't recommend you do that)..

    If you want a product that WORKS don't waste time with non-engineered, new and not understood, existing...
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    Use industry standard splines, like from the...

    Use industry standard splines, like from the following. Predictable and understood.

    https://www.engineersedge.com/gears/involute_spline_and_serration__13650.htm
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    There are many - many plastics that can be 3D...

    There are many - many plastics that can be 3D printed. Like ABS, PLA Nylon - what the materials? Kelly seems to be using a crowbar to get useful information out you and still not getting what...
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    See "Theoretical Calculation and Analysis on the...

    See "Theoretical Calculation and Analysis on the Composite Rock-Bolt Bearing Structure in Burst-Prone Ground
    "

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