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spiral milling
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Posted by: savo ®

06/19/2008, 15:24:36

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Im doing some spiral milling and i need to calculate the change gears required for spiral milling a 75mm lead on a machine having a lead of 200mm?

thanks for your time








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: spiral milling -- savo Post Reply Top of thread Forum
Posted by: randykimball ®
Barney
06/19/2008, 23:40:46

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Can't know exactly without knowing your tooth numbers. BUT,... devide 200 by 75 and get 2.6666. you will want to turn the lead shaft 2.666 times per one via what ever gears you pick out. You should have a book or chart with your machine to tell you which gears to pick. Often you change the whole cluster to get a selection of leads which contain the one you desire. As an example 2.66666666 is not a real number, the correct selection should provide real numbers as gear selections unlike digital math can work in true fractions. You would want 2-2/3 turns.... but, I bet you need to rearrange the cluster... not as you have as ask.




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