JHOLLAND1
Titanium
- Joined
- Oct 8, 2005
- Location
- western washington state
so I am chasing history of 3 dimensional barrel cams--Wikipedia is of course referenced
and Wiki article on cams has photo reference of American Pacemaker lathe cross feed
assembly with extracted cylindrical element labeled constant lead barrel cam---
and in my opinion--this construct does not qualify as a barrel cam mechanism
in fact, American Tool Works product literature--1943--provides detailed focus on the mechanism--
referring to it as "micrometer ball stop"
as a gearhead--I find a degree of satisfaction in Wiki reference to Pacemaker class tools--but
using the rapid retract/advance mechanism with single fixed ball in constant pitch ground screw
is inappropriate- a multitude of more appropriate barrel cam examples are available
and Wiki article on cams has photo reference of American Pacemaker lathe cross feed
assembly with extracted cylindrical element labeled constant lead barrel cam---
and in my opinion--this construct does not qualify as a barrel cam mechanism
in fact, American Tool Works product literature--1943--provides detailed focus on the mechanism--
referring to it as "micrometer ball stop"
as a gearhead--I find a degree of satisfaction in Wiki reference to Pacemaker class tools--but
using the rapid retract/advance mechanism with single fixed ball in constant pitch ground screw
is inappropriate- a multitude of more appropriate barrel cam examples are available