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  1. mechpins

    micro ball screw (left handed)

    Yes if Nook industries made a smaller model that would be the ticket. I need a ball screw between 4m and 6mm in diameter. I tried THK but I was unsuccesful. Any other ideas? I am almost to the point of looking for a custom manufacture. Thanks, Ian
  2. mechpins

    micro ball screw (left handed)

    Does anyone know of a vendor that would sell or even make a left hand ball screw for me? I have been beating my head against the wall trying to find one that is small enough. The only company that I have found is only willing to sell them if I order more then 100. I am looking for a left hand...
  3. mechpins

    pressure vessel design sources

    This will be used for deep ocean testing. I normally would do just that, but my current employer does not want to fork out for an FEA package. I was planning to use Ti or SS Thanks, Ian
  4. mechpins

    pressure vessel design sources

    I am looking at 4000psi. The vessel will have a 2in ID and be roughly 12 inches long. I am still working on the seal design. Any suggestions? Ian
  5. mechpins

    pressure vessel design sources

    Hello I need to design a pressure vessel that can withstand 4ksi of external pressure. Does anyone know of a good pressure vessel book that could help me out? Thank you Ian
  6. mechpins

    carbon fiber tube

    I found a fiberglass tube that will work. It has a 4 inch OD and the price is fair. The reason that I was looking to use a material with a higher resistance was to get a voltage gradient. One of the science guys working for us wanted the structure to affect the rf field as little as possible...
  7. mechpins

    carbon fiber tube

    Higgler is there a source where I can look up the resistance of carbon fiber based on the voltage level? As a mechanical engineer I have a very limited knowledge on this sort of thing. Most of what I know is based on what I have been told by some of my EE friends and co-workers. I know that...
  8. mechpins

    carbon fiber tube

    CMRINI, It will be supporting a high voltage RF experiment. So we want to try and have a volatage gradient as it moves away from the test device. The hope is that the carbon fiber tube with have enough resistance through the length of the tube to smoth it out a little. litebike, that might...
  9. mechpins

    carbon fiber tube

    I would like to use it as a boom to hold on to a part that is roughly one meter away from the test stand. The part mass is negligible and the boom diameter is still somewhat negotiable. I would like it to have a diameter around three or four inches. This tube will only be used a couple of...
  10. mechpins

    carbon fiber tube

    Hello, I have been looking for an off the shelf carbon fiber tube and can not seem to find one in a size that would work for me. Does anyone know of a COTS supplier for a thin walled tube in the 3 to 6 inch diameter range that is 30 inches or longer? Thanks in advance for all the help.
  11. mechpins

    is this even possible

    The closest thing that I have found so far is made by Gerber Technology. I wish SW had some of this capability. http://www.gerbertechnology.com/default.asp?contentID=102 Thanks guys
  12. mechpins

    is this even possible

    I am working with cloth and have been asked to make a bowl from the material.
  13. mechpins

    is this even possible

    I made a bowl in SW and now I want to take the bowl and have SW tell me what shape I need to cut a fabric piece to make that shape of bowl. I am looking for SW to do what it can do with sheet metal only for fabric. I do not think that SW can actually do this but before I go out and look for a...
  14. mechpins

    is this even possible

    I would like to make a fabric bowl by drawing the bowl in Solidworks and then having soldworks cut the part and place it into a 2D drawing. I thought that maybe I could do this with the sheet metal tools but I have been unsuccessful. Is there an add-on that I can buy for solidworks that will...
  15. mechpins

    can you define a line with an equation with Solidworks

    Thanks for the help I think that I will try to use the excel spreadsheet method. I was asked to use an equation, but I think that I will get good results with the data points. Thanks guys
  16. mechpins

    can you define a line with an equation with Solidworks

    I am trying to sketch a parabolic line with an equation but cant seem to figure it out.
  17. mechpins

    honeycomb analysis

    Thanks, that is exactly what I was looking for. I am trying to assign properties to the core material in Cosmos, and now I actually have some real numbers to use. For an orthotropic material Cosmos has xyz inputs for the modulus of elasticity and it also has the shear modulus inputs. The data...
  18. mechpins

    honeycomb analysis

    I am working to design a structure with composite panels, but I am having a difficult time trying to find properties for composite honeycomb panels. Does anyone know where I can find this stuff?
  19. mechpins

    ball detent help

    thanks for your responses I had not really thought of making a ball detent adjustable. Thanks for the help in getting me started. Ian
  20. mechpins

    ball detent help

    I am trying to figure out how to design a ball detent retention system that works well, but am having a difficult time trying to figure out the optimal ball engagement depth. Does anyone have any suggestions or know where I can get information on ball detent design? Thanks, Ian

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