Welcome to ModelEngineMaker !If you have problems registering or logging in, please use the contact menu option to request assistance.
Can you use it in rotary table mode to make the division plate?Do you need different plates for different numbers of gear teeth when cutting gears? I've never used a dividing head, don't know the ins and outs of them.
Can you use it in rotary table mode to make the division plate?
Do you need different plates for different numbers of gear teeth when cutting gears? I've never used a dividing head, don't know the ins and outs of them.
Thanks Kim! I hope you're finding time to at least think about your A3!
What is that people say about having less time once you retire? Kim
What is that people say about having less time once you retire? QuoteI've been retired now for 15 years and I don't know how I EVER found time for work!
Sector arms? What are they/what do they do?
QuoteSector arms? What are they/what do they do?Sector arms are an aid to keeping track of the " turns plus holes" on the division wheel. They consist of two arms that can rotate independently on the worm crank axis, be locked to rotate as a pair, or be locked in place. In use, one arm would be set at the "starting hole", which is also the hole you must return to to get one full revolution of the crank. The other arm is set at whatever number of holes beyond the starting hole is required for the job in play, let's say as an example 5 holes beyond. They are then locked together as a pair, so they can later be rotated together without loosing their angular separation.The first cut is made with the pin in the starting hole, then the crank is rotated the required number of full turns (marked by the 1st arm, plus the 5 holes (marked by the 2nd arm), the pin is inserted there, and the second cut is made. Next, the arms are rotated together to bring the 1st arm to the current pin position, and the cutting process is repeated.This image of a Brown & Sharp version should help.
Also ...consider a spindle lock.Quote
QuoteAlso ...consider a spindle lock.QuoteThanks for the input and the videos, Dave!I do have a spindle lock, consisting of a nut at the back end of the spindle that can be tightened against the bushing. That is effective, but I can see where it may prove awkward if it requires two wrenches and two hands to tighten it without rotating the spindle. If that's the case I'll install a more traditional clamp style brake. That was the original intention anyway, so there is room for it.