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Experimental means of changing cutting tools. Two right-angle pneumatic die-grinders
are mounted back to back on the 5th axis, enabling the tool to be changed by
rotating the 5th axis 180 degrees. A router is mounted horizontally for roughing
cuts on cylyndrical objects held in the 4th axis.
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Above: Taig Mill, purchased as a manual version, but later converted
to CNC.
The rotary axis ( 4th axis ) was added by the addition of a surplus wormwheel
and screw, some bearings and aluminium offcuts to a spare Taig headstock.
A cheap variable speed router with a 6mm collet takes readily available disposable
milling cutters or engraving cutter via an adapter.
Motors and driver circuits for the mill were 'borrowed' from the earlier lathe
conversion below.
Below are some pictures of our first Taig lathe and its conversion
to CNC, although it's now back to a manual lathe and all CNC work is done on
the Taig Mill.
One of the pictures shows an early test of a design around an aluminium bar
using a flexible shaft dental drill.
Drive was via stepper motors and Alzanti
PVP134 unipolar drivers.
Software control was under Windows via Master5CNC
