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  • Users: alansimpson
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  1. alansimpson

    feature constraint problems

    This is an intermittent problem and I am not sure if I reproduce all issues. see attached example. Last feature giving problems.http://files.engineering.com/getfile.aspx?folder=2424d817-b3c2-43dc-8c3b-ed54d466c587&file=constraints_error.par
  2. alansimpson

    feature constraint problems

    Using SE ST and I am having problems with feature sketches failing. Seems to be happening all the time now and I cant figure out why. Problem is when I go to edit feature I am finding sketch and dimensions changed brown and cant be edited. Must be re-drawn or re defined. Even this doesn't work...
  3. alansimpson

    Self stripping connector for multi-strand mains flex

    I am doing some research to access self stripping connector for mains cable similar to below: http://www.google.ie/images?um=1&hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&channel=s&tbs=isch%3A1&sa=1&q=scotchlock&aq=f&aqi=&aql=&oq=&gs_rfai= Can anybody name any other products...
  4. alansimpson

    Switch windows to another open model

    Using SE ST100 for a while now. When i have to switch between active models that are open I must use View / Switch windows and then back to Home. I am finding this quite tedious and irritating considering previous SE and every other windows based application has Windows menu always available...
  5. alansimpson

    CERAMIC BEARING VENDORS...

    In my searches haven't found much outside China. example: http://www.bearings-china.com/main-products/Ceramic-bearings.htm Problem is you are never sure of what you are getting.
  6. alansimpson

    Locking a vertically sliding tube in place

    Screw jacks are traditional method of mechanical outrigger. Depends on the risk level but I wouldn't trust any locking mechanism that wasn't fail safe.
  7. alansimpson

    minimum rpm

    I'm afraid you have not explained the problem clearly. What is the application? What are you trying to achieve?
  8. alansimpson

    Visible edge line weight in model view

    Hi there. I'm using SE ST. Is is possible to change visible edge line weight or thickness in model view so that they appear heavier on screen or when exported as image? Thanks
  9. alansimpson

    Epicyclic Gearbox

    Have you considered Harmonic Drives? http://en.wikipedia.org/wiki/Harmonic_drive
  10. alansimpson

    Motor Sizing and Power Requirements

    Some useful information in Lenze.com catalog if you download it. Other drives suppliers like sdp-si.com or misumi have good engineering guides.
  11. alansimpson

    Dealing with fabrication shops

    Fabricators generally won't give breakdown of their costing. It is considered their business, not for outsiders. If you could try to discuss with them methods of making cost saving you might get somewhere. If you have no luck go somewhere else. Nothing like competition to get attention
  12. alansimpson

    "Off the shelf" low pressure piston

    Low friction pneumatic cylinders might do. http://www.airpot.com/ SMC also do a low friction cylinder range which dosn't use physical seals but relies on air leakage to keep piston moving.
  13. alansimpson

    Ball screw

    The Uhing product can be pneumatically actuated. Not sure if there is a purely electrical version. Probably need a good deal of force. Rohlix has a lighter duty version with manual quick disconnect. You could re-engineer using an electro-magnet...
  14. alansimpson

    Publish models for download in range of formats

    I wish to publish on the web a set of 3D models where a used can download in any format they wish, within reason. I have no idea what system end user will have and what they will be used for, CAD or STL etc. Is this possible? Anybody know of a third party who can provide this service? Thanks
  15. alansimpson

    Ball screw

    Don't think that can be done with ballscrew. Uhing have linear drive that can be engaged or disengaged and allowed to move freely. http://www.uhing.com/index.php?sp=en&id=503
  16. alansimpson

    Noise measurement of equipment.

    I am still working on this problem. It has been decided to look at noise levels of components individually. This means measuring even smaller noise levels. I do not need to work to a specific standard. I just need to judge if I am reducing acoustic noise level and comparing performance with...
  17. alansimpson

    Calorific testing of electro. mechanical device

    Could anybody recommend a device or system to measure amount of heat energy given off or absorbed by a machine which usually runs under normal room conditions. This device would precisely measure small amount heat (mJ.) given off or absorbed by electro-mechanical device running in air, gas or...
  18. alansimpson

    Where to find pvc or urethane edging for sheet metal?

    Have a look through Mcmaster-Carr. http://www.mcmaster.com/#stainless-steel-trim/=5mqln9
  19. alansimpson

    PDF Translation problems

    I have been publishing my SE drawings as PDF for manufacturing for an no. of years. Sometimes end user cannot view certain symbols like diameter or geometric symbols or they get translated as other fonts. Not knowing what version of Adobe reader end user has or what fonts they have, is it...
  20. alansimpson

    Recommend Mechanical Engineering Design Books

    Mark's is good for mechanical http://www.knovel.com/web/portal/browse/display?_EXT_KNOVEL_DISPLAY_bookid=346

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