Hi Greg.
Thanks for the post.
In this first trial I am using PLA. and see how it all works out.
ABS is stronger but can also become brittle ( I think) over periods of time.
Heat will not be an issue as the bracket is only in point contact (6 pointed grub screws) around the profile
that engage onto the motor casing, and is seeing air flow from the motor fan.
Strength again is not a major issue, the whole GR system is driven by the motor using plastic gears.2 x 16 T and 1 x 32 T
Without the adequate tools in place, the manufacture of the ally bracket can be difficult,
this maybe a good cheap option. But we shall see .
?
BLDC motors are good, but can suffer with lack of toque at the lower RPM spectrum, ? but I am
not an expert in these matters. we can pass this over to other members for discussion who are a bit more "savvy" than me
on motors.
?
A good test of adequate torque is to cut for example a? 40 mm dia x 2 mm pitch thread. This requires low RPM?
and sufficient torque when coming up to full depth.
The automatic "hands free" screwcutting module of the ELS demands the threading tool moves directly in the X axis direction.
No compound slide at 29.5 degree moves.
Not a problem as the number of roughing and finishing passes are pre set.and can also be changed if cutting brass versus steel.
At the end of the cuts, the ELS automatically backs out the tool " called rebound" and travels to the original starting point and feeds back in and cuts.
In manual ELS screwcutting this adopts the same X axis "IN" move, but naturally depth of cuts and tool retraction are controlled by the operator.
In automatic mode, a predetermined backlash setting is applied in the firmware. so no fear of the tool not clearing the thread profile on?
automatic returns.
?
Many thanks for your interest.
Keep posting.
--
John
John Lindo