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: Formulae for calculating dividing head
: Formulae for calculating dividing head -- savo	Post Reply	Top of thread	Forum

Posted by: randykimball ® 04/08/2008, 17:11:00 Author Profile eMail author Edit

Welcome aboard, You need to find an old machinest and get your hands on an older copy of Machinery's Handbook. It will be the last word (best advice) on dividing heads... hardly anyone uses them anymore. Only old machinest will know how to use them...that would be me... but I've forgotten how. It has been many years since I've even seen one. Almost everyone uses a rotory table or does the trig and uses X & Y cords now with digital readouts. I gave away my "OLD" Machinery's Handbook or I would give you a straight answer. You may find one in a liabary. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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: : Formulae for calculating dividing head
: : Formulae for calculating dividing head -- randykimball	Post Reply	Top of thread	Forum

Posted by: Marky ® 04/09/2008, 10:46:36 Author Profile eMail author Edit

From the XXth edition...stole it from DiVinci...me and Leo go way back. tanD = cos(360deg/N) X cotB sinE = tan(360deg/N) X cotC x sinD Setting-angle A = D-E A = Setting Angle for Dividing Head B = Angle of blank in which teeth will be cut C = Angle of Fluting Cutter N = Number of teeth to be cut. You still need a copy of Machinist Handbook. There are illustrations and other tables. I would just buy a gear. Good Luck...May our head be divided and not our country!!..My Tribute to Charlton "Moses" Heston. I'll kindly pay you Tuesday..for a hamburger today....Whimpy Modified by Marky at Wed, Apr 09, 2008, 10:47:57

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: : : Formulae for calculating dividing head
: : : Formulae for calculating dividing head -- Marky	Post Reply	Top of thread	Forum

Posted by: randykimball ® 04/09/2008, 14:23:53 Author Profile eMail author Edit

Marky, As I recall, my first MH book was a 6th addition... does that date me? I sure wish I had it. There was a wealth of information there on babbit, gear heads, dividing heads, tool steels, heat treatment, tool sharpening, Landis die heads, .... wow.. all gone now. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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: : : : Formulae for calculating dividing head
: : : : Formulae for calculating dividing head -- randykimball	Post Reply	Top of thread	Forum

Posted by: Marky ® 04/09/2008, 15:04:49 Author Profile eMail author Edit

OMG...I had 12th....6th edition!! That must have been tough to carry around...being made from granite. ;) I'll kindly pay you Tuesday..for a hamburger today....Whimpy

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