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  1. ecampos

    ACME screw actuator failure analysis

    Sounds like you are neglecting on of the two loads here. I think that if I read it right, you have torsion from the motor torque and bending on the pin from the thrust load. Is this combined loading considered in your stress calcs? Regards Edson Campos
  2. ecampos

    Anyone else experiencing seemingly

    Yeah, Get it all the time. Have to wait for the computer to re-establish connection (2-5 sec.) Sometimes Solidworks cant find links. Had no idea that it could be this. Thanks For the info. Regards, Edson Campos
  3. ecampos

    Power Formula for 3phase 115v 400Hz

    Thank you for the responses. Now is (theta) 120 degrees and if not how do I find out what it is? Reagards, Edson Campos Edson Campos
  4. ecampos

    Power Formula for 3phase 115v 400Hz

    Power Formula for 3phase 115v 400Hz motor Y connection I think. Is it..... a) P=Sqrt(3)*E*I*cos(theta) b) P=3*E*I*cos(theta) Can anyone explain the difference? Regards, Edson Campos
  5. ecampos

    Helical Gear Planetaries

    Diamondjim, Let me ask this differently, I know that thrust exists on the gears between their respective meshes. The question is, since the arrangement is such that are three gears in contact (sun, Planet, Ring), are the thrust forces from sun-planet necessarily equal and opposite to the thrust...
  6. ecampos

    Helical Gear Planetaries

    Question 1. In a helical gear simple planetary arrangement, with the sun driving, and the arm output, is there a thrust on the individual planets or is the thrust inflicted on the carrier(arm)only?? Qustion 2. In a multi-stage helical gear simple planetary, will the thrust from question 1 be...
  7. ecampos

    Vascomax 300 Fatigue Life Props.

    Does anyone have any experience with using Vascomax 300 for gearing. If so what were the assumed allowables for the Contact and Bending stresses in the gears. AGMA does not cover this material and we are wondering how to go about implementing AGMA 2001-C95 and 908-B89 with materials other than...
  8. ecampos

    Need common sense spur gear calculation

    Thanks, tdw Edson Campos
  9. ecampos

    Need common sense spur gear calculation

    Ok so what is the trick to unzipping the program tdw? Jackboot? Any one? Edson Campos
  10. ecampos

    High speed bearing help. Sizing Question.

    Try KOYO bearings in Japan. They had a 115,000 rpm ceramic bearing when lightly loaded and using a oil lube not grease. Check them out. I am sure that they are on the WEB somewhere. Edson Campos edsoncampos@earthlink.net
  11. ecampos

    saving problem

    I have had the same problem with the same card. Solution 1 is to save the part NOT-shaded. in wireframe it will save correctly. Solution 2, is to get latest drivers, I cant remember what version the drivers were but I know that it fixed it. Try ATI. Is your computer a Dell? Edson Campos...
  12. ecampos

    ASME code on-line?

    Global Documents or IHS online. www.ihs.com you have to pay for them though. Edson Campos edsoncampos@earthlink.net
  13. ecampos

    The history of the "mil"

    "mil" from what I remember means "A Thousandth" as in 1000 millimeters. I know that english and german engineers working in the states used that term and that is where I heard it first. May be its simply laziness to say thousandth. Edson Campos edsoncampos@earthlink.net
  14. ecampos

    Calculating leadscrew efficiency?

    Should be e=FL/2PiT F-linear force T-Torque applied L-Lead (tan alpha=L/Pid alpha= thread angle d= mean diameter of screw This is from "Mechanical Engineering Design&quot...
  15. ecampos

    Conduction and pressure question

    AHA! I am with you know. Thanks for the explanation. Edson Campos edsoncampos@earthlink.net
  16. ecampos

    New to microcontrollers & electromechanical devices

    Try wmberg.com nordex-inc.com sdpsi.com pic-design.com dodge-pt.com A whole bunch of people make motors search the web. Edson Campos edsoncampos@earthlink.net
  17. ecampos

    Conduction and pressure question

    Mduplessis, SethN, I believe that Bill asked whether "Pressure" had anything to do with the conduction. You both stated that Area is important. I agree but can you guys explain more. I am not sure what you are saying about the conductivity changing at the yield point? Why does...
  18. ecampos

    This is sad - nine postings since 09/21/99

    The reason for the lack of postings is probably that Mathcad is a simple program to use and is friendly with lots of help. It also has its own user group at Mathsoft website. I have never had a problem that the Help section did not explain. Edson Campos edsoncampos@earthlink.net
  19. ecampos

    half moon extrusion on flat face

    How about revolving a half circle around an axis to make a sphere? Edson Campos edsoncampos@earthlink.net
  20. ecampos

    heat treating 416 steel

    You need to figure out what are your loads and stresses that the part is going to see and then decide what heat treat is necessary. Edson Campos edsoncampos@earthlink.net

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