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 Power Screw !! Post Reply Forum
 Posted by: watzmann ® 04/19/2005, 12:12:57 Author Profile Mail author Edit Need your help plz , i'm designing a mechanism which is using a power screw in it . so my problem now i want to know how to calculte the diameter of the my power screw if the Load on it = 200 Kg and the length of the power screw is 1.50 M , can anyone please tell me the formula to calculte this problem . Thanks too much

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 Re: Power Screw !! Re: Power Screw !! -- watzmann Post Reply Top of thread Forum
 Posted by: msenousy ® 01/03/2006, 17:47:47 Author Profile Mail author Edit you can check the book entitled "MACHINE ELEMENTS IN MECHANICAL DESIGN' by Robert L. Mott, Chapter_17. All forms are there.g. luck

 Re: Power Screw !! Re: Power Screw !! -- watzmann Post Reply Top of thread Forum
 Posted by: devitg ® 04/21/2005, 23:56:59 Author Profile Mail author Edit A power screw shall be consider a enveloped wedge . Its heigth will be 1,50 meter , is't lenght is what do you have to state. Guess yo use a 3 mm pitch screw , you will need to turn it 500 turns. The wedge lenght will be the screw mean diameter * PI * 500 So if the screw is PULLING the load , any 3 mm pitch screw will do it. But if the screw shall PUSH UP the load , a lot of other facts have to be in consideration.(buckling is the main) Other main fact is in how many seconds , minutes or hour , you want to up the load. Now re think your problem