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Point me to a place to learn about worm drive design?

  1. Aug 10, 2014 #1
    Hey guys!
    I am currently creating some automated snips for trimming plants.
    I am using auto desk inventor to design it all.
    The design and concept is solid and modelled/animated to show proof of operation.
    However now i want to try prototype - i can sort out everything aside from the gear.
    I know my gear ratio, the diameter of both gears and the teeth number (so modulus).
    Now i need to try see if i can actually accurately model the gear in inventor (currently just used a 1:40 worm gear that i fiddled to my required dimensions). However the issue is that i have no idea where to start learning!
    Google hasn't been overly helpful in this scenario (or i just missed something good).

    Any help or advice is greatly appreciated!

    thanks alot for taking time to read!
  2. jcsd
  3. Aug 12, 2014 #2
    I'm sorry you are not generating any responses at the moment. Is there any additional information you can share with us? Any new findings?
  4. Aug 12, 2014 #3


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    Science Advisor

    Welcome to PF.

    Start here; http://www.qtcgears.com/Q420%20PDF%20Files/Tech.pdf [Broken]

    9.1 Worm Mesh Geometry
    9.1.1 Worm Tooth Proportions
    9.1.2 Number of Threads
    9.1.3 Pitch Diameters, Lead and Lead Angle
    9.1.4 Center Distance
    9.2 Cylindrical Worm Gear Calculations
    9.2.1 Axial Module Worm Gears
    9.2.2 Normal Module System Worm Gears
    9.3 Crowning Of The Worm Gear Tooth
    9.4 Self-Locking Of Worm Mesh
    Last edited by a moderator: May 6, 2017
  5. Aug 13, 2014 #4
    thanks a-lot guys!
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