4April 2016 www.shopmetaltech.com
Tech Tips | CUTTING TOOLS | 97
1. QUICK TOOL CHANGE
reduce cycle time with quick tool
changes within the machine. By using
live tools with a real quick change
system, you reduce machine set up
time. This means less down time and
real quick change systems should
not be confused with tools with
interchangeable spindle adapters as
those systems do not significantly
Modern live tools clamp regular Er
collets as well as adapters with preset tools in the same spindle. Don’t
pay extra for quick change. it’s part
of high quality standard toolholders
2. COOLANT THROUGH SPINDLE
TOOLHOLDERS AND GEAR RATIOS
reduce cycle time and cut material
faster with coolant through the
Modern coolant through the
spindle toolholders are sealed to
maintain high coolant pressure over
the full speed range.
This leads to maximum cooling
of the cutting tool. High cutting
performance, excellent surface finish
and longer tool life are the result.
Think about higher gear ratios.
Axial, radial and adjustable live tools
can be made with higher gear ratios
(1:2, 1: 3 speed ratios).
Depending on the job, combine
higher gear ratio with coolant through
and you have maximum productivity
On the opposite side, increase
torque by choosing a toolholder with
gear reduction, for example, tapping
Live Tooling Productivity
Getting the most
from your lathe
By THOMAs MiTTMAnn
investing in a new
CnC lathe is a big
step for any company, but
often, toolholder selection
is overlooked. your new
machine may come with a
starter package consisting
of two straight and two
angle driven tools–including
external coolant supply only.
This is a good starting
point, but how can someone
take full advantage of the
new equipment and increase
productivity? By quoting on
jobs one couldn’t execute
before, and by machining
those parts in an economical
and efficient fashion that
couldn’t be offered before.
This is where modern
high performance live tooling
4 different approaches to higher productivity
3. MULTIPLE TOOLHOLDERS
Modern CnC lathe turrets have 12, 16, 20
or 24 tool stations. some machine models
have two or even three turrets. The number
of machining tasks increases with the
number of cutting tools in the machine. in
other words, the more tools in the lathe, the
more operations without tool change that are
possible, thus reducing cycle time.
High performance multiple live tools
increase the number of cutting tools per
turret station in the machine.
For machines with y Axis and sub spindle,
driven toolholders with up to eight tool
spindles in one turret station are available.
The result, again, is a gain in productivity
through less downtime for tool changes.
4. DEDICATED TOOLHOLDERS
special jobs require special tools. in recent
years, new types of live tools have emerged,
such as adjustable drill/mill units for drilling
at different angles, slitting saw units for
cutting a spline or a slot, hobbing units
with adjustable angles for hobbing gears
(spur gears or helicoidal gears), and thread
whirling units for screw production. They
also offer easy quick change of the insert
For broaching of inside and outside
keyways or splines, and torx profiles,
broaching units are standard live tools.
Modern live tooling is versatile and
flexible. High performance live tools finish
complex parts in one set up in the lathe.
They contribute to high quality end
products at high productivity. live tooling
contributes greatly to the success of your
business and shortens the rOi of your
purchased equipment. SMT
Thomas Mittmann is owner of Mittmann Inc.,
exclusive Canadian importer of WTO GmbH.