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Recent content by mclearg

  1. mclearg

    Worm drives - rubbing speeds etc

    Can anyone direct me to some formulae for worm drive design. I have a machinery's handbook somewhere but can I find it?!?!?! Cheers, Gordon. Why do some things seem so plausible at the time ............and yet so idiotic in retrospect?
  2. mclearg

    Lithium Ion v's Lithium Polymer vs' what's new

    Thanks I'll have a look at them. I was kind of hoping that I could find a manufacturer that made off the shelf tray's and batteries, save me some cost as we are not a particularly high qty user. G. Why do some things seem so plausible at the time ............and yet so idiotic in retrospect?
  3. mclearg

    Lithium Ion v's Lithium Polymer vs' what's new

    I have an application that requires some thought. We currently use a 7.4V (8.4V peak, 5.5V cut-off) 2400mAh Lithium Ion battery pack with PCB (IC protection) in our product. My main problem is that the life cycle of the battery is 300-500 cycles and as it is currently molded into the product...
  4. mclearg

    Appearance call out

    OWhere do you set the appearance call out to fly out when picking a surface. On my set-up it doesn't on others it does and is gettin in the way. I can't find what thye difference is on each machine. Thanks for your help, Gordon. Why do some things seem so plausible at the time ............and...
  5. mclearg

    Interference fits for Gears on Knurled shafts

    Thanks for your prompt reply israelkk. The specific problem I've got involves a knurled shaft and a brass gear. I know the torque it has to transmit. This assembly is bought from a Chinese company and we are having to specify to them what we want. Unfortunately I can't get away with telling them...
  6. mclearg

    Interference fits for Gears on Knurled shafts

    Does anyone know of any standards I could source for the required interference/knurl fit for transmitting a specified torque through a gear/shaft assembly?
  7. mclearg

    Optical measurement of 1 micron dimensional changes

    Which system will give me 1 micron (0.001mm) sensitivity, when using optics to measure dimension changes in tissue (biomedical) samples. I was thinking of using linear arrays but the minimum pixel size I can find is 0.004mm. I had thought of staggering 2 or 3 of these but this would be to wide...

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