Look at the picture below: Where, D1 Pitch Diameter of Worm D2 Pitch Diameter of Gear C Centre to Centre Distance between the Worm and the Gear This worm gear design tutorial will discuss up to the selection of the module and pitch and the calculation of the number of teeth, pitch circle diameter and centre to centre distance between the worm and gear.Design calculations of the other aspects of the worm gear will be discussed in a subsequent part of the tutorial.
Steps of the Design Calculation The axial pitch of the worm and the circular pitch of the gear must be same for a mating worm and gear. We will use the term Pitch (P) for both the pitch in this tutorial. Also, the module of the worm as well as the gear must be equal for a mating worm and gear. Now, lets say we have the following design input: Speed of the Worm (N1) 20 RPM Speed of the Gear (N2) 4 RPM And, we have to find out the Module (m), Pitch (P), Number of helix of Worm (T1), Number of teeth of Gear (T2), Pitch circle diameter of Worm (D1), Pitch circle diameter of Gear (D2), Centre to centre distance(C). Worm Gear Design Calculation Creator Download First ResultNow we recommend you to Download first result STOJA Bela Ciganka Audio 2013 MP3 which is uploaded by STOJA Official of size 4.10 MB, duration 3 minutes and 7 seconds and bitrate is 192 Kbps. ![]() Conclusion The worm gear box design calculation explained here uses the AGMA empirical formulas. Worm Gear Design Calculation Creator Free As WellA few worm gear design calculator are available on web, and some of them are free as well. In the next worm gear box design calculation tutorial we will discuss the force analysis of a worm gear box. Spur Gear: If you have observed a spur gear application, you may have noticed that spur gear can be replaced by helical gear. Where should a helical gear should be used What are the benefits and disadvantages of doing so.
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