Tri Tool 301 Tube Squaring - Manual (Page 11)

11
Model 301 Tube Squaring Machine
92-0630 Rev. 130308
WARNING:
OPERATION
Select the tool bit(s) required to machine the end configuration desired.
Use of dull or improperly designed Tool Bits or Tool Bits not manufactured by
TRI TOOL Inc. may result in poor performance and may constitute abuse of
this machine and therefore voids the TRI TOOL Inc. factory warranty.
GENERAL GUIDE LINES FOR SELECTING A TOOL BIT
Selection of the Tool Bit should be based on tubing material, the tubing size, and
how critical is it to have a near burr free end.
A standard entrance angle Tool Bit is recommended for carbon steel.
These Tool Bits also function well with some stainless steel applications where a
near burr free end is not a critical requirement.
A high entrance angel Tool Bit is recommended for most stainless steels.
Generally this is the most suitable edge geometry for about 90 % of all of the
stainless steel tubing applications.
An extra hook angle Tool Bit is recommended for stainless steels which are very
soft.
These stainless steels include materials like 316L, which have been bright hydrogen
annealed, vacuum annealed or annealed and electro-polished.
Electro-polished stainless steel has a micro-thin surface, which is high in Cr and Ni
which makes it very soft, but tough and difficult to cut without a burr.
Use a .969” (24.6 mm) tall Tool Bit for 3/16” (4.7 mm) diameter or less tubing.
The tall Tool Bit may provide some advantages for wall thicknesses less than
.020” (.5 mm).
The tall Tool Bit will cut very close to the Collet face, which minimizes flexing of the
tubing from the cutting pressure.
The tall Tool Bit will require more time to adjust the tubing position for cutting and
there is some risk of crashing the Tool Bit into the Collet on larger OD tubing.