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  • Users: kgwhipp
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  1. kgwhipp

    Building Standard Deviation using Array [Excel]

    This is my current design. I input raw data, and it outputs STDEV.S() calculations on the right hand side. Raw Data 1 1 1 1 1 2 2 2 3 3 Standard Deviation 1.700619082 # of 1's: 5 # of 2's: 3 # of 3's: 2 My thoughts so far is that I want to...
  2. kgwhipp

    GD&T (or other) callout

    Hello All, Take a look at the attachment. I have hundreds of these pillars that will be positioned and adjusted using studs with leveling nuts. I need the red face of the pillars to all lay in the same plane as one another within 1/32" of an inch. (We usually do this by just projecting out a...
  3. kgwhipp

    Double motors and double pumps

    Hello All, I'm working on a residential vehicle lift and just found out that I'm limited to SINGLE PHASE power. I'd originally spec'd a 10HP motor tied to our pump and estimated a ~60second lift time. Now that I'm no longer able to get a 10hp motor I'm struggling to find a way to maintain the...
  4. kgwhipp

    Carbon Steel for Machining

    I'm making this part and ones like it, and my customer is flexible with regards to material and even slight design changes. Part is finished to 12" on one side square and 2" thick. The stock will need to be oversized for machining. Customer initially specified Cold Drawn 1018 which isn't...
  5. kgwhipp

    Shaft Failure

    See photos of the setup. http://i.imgur.com/WHNwACl.png Hi Folks, We have some equipment that used a stepped shaft to fit an off the shelf gear with a smaller bore. The shafts are failing right where one would expect. I'm no expert at metallurgy but thought someone might recognize the...
  6. kgwhipp

    Heavy Duty Single Shear Joint

    I'm trying to find the best configuration for a joint on a lift we're designing. This is a heavy structure but I want the joints to be field installable, something that a tech can wrench and hammer into place. I want to keep the two 1018 elements held together very closely so that there isn't...
  7. kgwhipp

    Scissors Geometry

    I've been staring at these calculations for a while now and I've hit a stumbling block. I'm trying to determine the force needed by the actuators so I can size them and I'm not sure whether I'm off by a factor of two and doubling the sizes needed or not. See the picture at this link...
  8. kgwhipp

    Heavy Duty Wheels

    Hello Metal heads, I'm working on a project that has some heavy duty wheels running against a track made from waterjetted plate. These won't ever seen a shock load but will potentially be run with a massive amount of weight on them, it may be as much as 25k-lb, but is more likely to only see...
  9. kgwhipp

    Sizing tank for Lifting air springs.

    Hello All! I'm trying to size a system for lifting a steel platform using air springs. (They're called air springs, but they're essentially used actuators and I'll refer to them as such) These are big rubber bags that are typically mounted for automotive purposes and have a variable volume. I...
  10. kgwhipp

    Tracing Complex 2d Contour

    Hello All, I've been at this all day trying to find a way to digitize a 2d part so we can create a good clean DXF for sending to the be cut on our waterjet. Previous workflow usually involved scanning, PDF, open pdf in Solidworks and draw lines and tangents, splines over it until it was done...
  11. kgwhipp

    Counterbalance Valves pressure drop?

    We're troubleshooting a Scissor Lift that has four cylinders each with a counterbalance valve to prevent uncontrolled drops in the case of a line failure. They're also important to hold the load solid when the lift is unpowered but raised. The lift will move itself up and down without issue...
  12. kgwhipp

    Non-Traditional Scissor Lift Shuddering

    I'm having some troubles with a large scissor lift I custom designed. The architect managed to build the ceiling height too low to match the distance between the main floor and basement level. If we had used a fixed canopy scissor lift the top would either rest two feet too low when lowered...
  13. kgwhipp

    True Involute Spur Gear Generator

    We often use a gear driving a series of pins to move our equipment. I searched high and low for an affordable software package to help use generate involute profiles for this and stumbled across this fantastic gear generator and wanted to share: http://woodgears.ca/gear/index.html It has a fun...
  14. kgwhipp

    Macro for Beam Profile Generation

    thread559-179657 I did the best I could to search and find a macro to work with but a lot of the links/files are old and/or no longer work with SW. I'm running SW 2010 3.1 and I've created a few .SLDLFP parts that consist only of a single sketch that represents a profile of extruded metal...
  15. kgwhipp

    Locking an adjustment screw

    Hello, this is my first post here and I wanted to thank everyone for creating such a great useful community. I'm designing a lifting platform with a 10,000 lb capacity and one of the features I'm incorporating is a set of leveling screws embedded into the structure at the four corners. The...

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