Tri Tool 301 Tube Squaring - Manual (Page 12)

12
TRI TOOL INC.
92-0630 Rev. 130308
CAUTION:
NOTE:
CAUTION:
The M-42 Tool Bits are for use with the exotic alloys where the high heat resistance
is required to avoid burning the cutting edge of the Tool Bit.
M-42 can improve the life expectancy of the Tool Bit under some conditions on
stainless steel.
It should be noted that M-42 Tool Bits are more brittle than the M-2 Tool Bits,
therefore there is a much greater risk of damaging the M-42 Tool Bit when installing
the tubing in the Tube Squaring Machine.
Loss of Tool Bits from damaged edges may not off-set the improved cutting life that
those Tool Bits promise.
Some of the exotic alloys may require Tool Bits with both the extra hook angle as
well as the M-42 tool steel for heat resistance.
Insert the Tool Bit into the slot in the Cutting Head.
Ensure that the Model 301 is disconnected from the power source before
installing a Tool Bit.
The normal position for the Tool Bit (P/N 99-1445) is shown in following picture.
This position is used for .50” (12.7 mm) and smaller diameter tubing.
This is the designed working position of the Tool Bit and will leave virtually no burr
with standard tubing.
When working with electro-polished stainless steel tubing, slow cutting speeds must
be used to minimize the ID burr.
The Tool Bit (P/N 99-1445) may be reversed as shown in the following pictures.
This reversed position may be used for tubing with an ID greater than .50"
(12.7mm).
With the extreme shear cutting action, the burr on the ID will be virtually eliminated.
Minimum burr may be obtained with a slow RPM and a slow feed, which will
cut a continuous chip.
Terminate the cut with one or two revolutions without feed to square the end of the
tubing.
The cutting edge of the Tool Bit must be located on the radial centerline.