Another thread cutting calculator - Metric & Imperial
Posted: Thu 05 Jul , 2007 16:10 pm
Hi All,
In response to various questions from paulmo101, I put together a threadcutting calc sheet for imperial and metric gearboxes.
As far as I can tell, the gearboxes and their drives are common to all models of Viceroy manual lathes from the 1960's 5" models through to the 280 models of the mid 1980's.
It works in a slightly different way to the calculator created by dazz (see post in 'Machines' section, "Imperial threads from a all metric lathe") - his will enable you to try out various combinations of compound gears.
It's a bit big (805KB) as it includes copies of various threadcutting charts.
Hope others find it useful.
Andy
Edited 20 June 2009 - new version uploaded with metric 4-position gearboxes included
In response to various questions from paulmo101, I put together a threadcutting calc sheet for imperial and metric gearboxes.
As far as I can tell, the gearboxes and their drives are common to all models of Viceroy manual lathes from the 1960's 5" models through to the 280 models of the mid 1980's.
It works in a slightly different way to the calculator created by dazz (see post in 'Machines' section, "Imperial threads from a all metric lathe") - his will enable you to try out various combinations of compound gears.
It's a bit big (805KB) as it includes copies of various threadcutting charts.
Hope others find it useful.
Andy
Edited 20 June 2009 - new version uploaded with metric 4-position gearboxes included