denford triac rigid tapping

[battwell]

theres no reversing contactor in mine. just forward run
the spindle doesnt have to run accurately- just at rough speed required as the z axis will be geared to its encoder (which il have to add) - so will only start back out movement when the spindle is in reverse in a tapping cycle .
i havnt had time to test the lynx drive fully yet- but its ready light is on !
it does look a tight for space fit- was thinking mounting the motor high with a long shaft where the original motor is now if i have to use an ac servo instead.
time for some testing.

[m_c]

You need accurate enough spindle control so that you can stop it within a reasonable tolerance, unless you plan on having a very wide tolerance on tapping depth.

To give you an idea of the space problem, this is a 110mm square plate which the servo motor bolts to on top of the spacer -


The spacer is high enough to get reasonable bearing spread between the two support bearings for the extension shaft, and a flexible coupler.
I have a model of the Triac head casting in Fusion360 if you want to see what will work.
IIRC you could probably get a 130 frame motor on, if you wanted a bit more power.

[m_c]

This post onwards covers the servo and the mount - http://www.mycncuk.com/threads/10344...9732#post89732

[andy_con]

Got some tapmatic tapping heads for my triac, work a treat

[battwell]

as uccnc fully supports rigid tapping- and others are using it daily id like to add it to the triac.
if i run into problems- il go with tapping head .
to be fair with the amount of real paying work i have its going to be a while before the new "hobby machine" gets done.

[andy_con]

Is it really worth the cost and effort, use threadmills

[battwell]

Does anyone have a spare encoder cable or just encoder plug for fanuc red cap
Only required for test rig to set up my new drives.
Terminal layout is different to most motors- pain!