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Shital parekh, navsari

12/09/2007 4:27 AM

I want to reduce motor (2400Watt) speed from 27000rpm to 3600rpm in two stage. stage one - helical gear and stage two - spiral bevel gear. I need suggestion for gear design and gear ratio for both stage
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#1

Re: Shital parekh, navsari

12/09/2007 4:55 PM

Look at the previous comment for the bending device.

Only one remark when you will choose the number of teeth try to have for the gear a not multiple of the pinion number. It will lead to a longer life due to less fatigue of each tooth.
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parekhsk
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#2
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Re: Shital parekh, navsari

12/11/2007 11:09 PM

Can suggest gear ratio
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#3
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Re: Shital parekh, navsari

12/13/2007 7:14 PM

May I make an other suggestion with resoect to ratios. It is preferable to use the highest ratio in the last stage in order to have small torques till last stage and the benefits of a lighter construction. Total ratio 27000/3600= 7.5, The last stage being a spiral bevel gear you can afford ratios of 4 or even more. You could choose 1.7 in the 1st stage and 4.4 in the second.

As for the number of teeth this can be analysed by computations and optimized.

As examples : 36/21=1.7143 and 66/15=4.4 itot= 4.4*1.7143=7.5429 0.57% difference Other combinations could be better.
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parekhsk
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#4
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Re: Shital parekh, navsari

12/13/2007 10:47 PM

Thanks for suggestion, can suggest for module selection
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