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FIVE-AXIS VERSION OF MAKINO V33I NOW AVAILABLE
Auburn Hills, Michigan – February 2009 – Makino has created a new 5-axis version of its V33i
hardmilling vertical machining center, the V33i-5XB. The V33i platform
provides extreme dynamic accuracy for long hours of continuous
hardmilling, and the new 5-axis capability provides for reduced part
setups and extreme accuracy in contoured shapes.
"The V33i is quickly becoming the
standard for extreme accuracy die/mold work," says Bill Howard, Makino
product manager. "With the addition of 5-axis capabilities, the V33i is
an even more attractive option to premium job shops and die/mold shops."
The V33i-5XB enables single set-up
access to complex multiple-sided parts and five-axis geometries,
reducing time and cost of manual labor. The added 5-axis features
provide increased accessibility to under-cut areas, oddly positioned
features, and complex geometries, with shorter tool lengths and higher
spindle speeds. This assures the best tool life and surface finish
characteristics.
Tilt-Trunion Table
The 5-axis functionality
of the V33i is added via a Makino-designed tilt-trunion table. The
tilt-trunion table of the V33i-5XB is a 7.87 inch (200 mm) diameter
faceplate. It is capable of handling a 66-pound (30 kg) workpiece with
dimensions of up to 9.85 inches in diameter x 12.24 inches tall (250 mm
x 311 mm) depending on B and C axes positions.
The travels are designed to provide
full coverage of the C axis table in either the zero or 90-degree
position. Precise rotary encoders provide 130-degrees of B-axis
movement (-20 to +110) and a 360-degree continuous movement on the
C-axis. Incremental B- and C-axis indexing can be as finite as
0.0001-degrees.
The machine can be equipped with optional Erowa or System 3R
pallet/chuck systems to automate the flow of different work pieces
to/from the machine. This helps increase machine utilization, improving
productivity and impacting lead-time, while driving down the cost of
labor and facilitating unattended machining.
V33i
The V33i platform is designed for high-speed hardmilling
in materials at 50+ HRc. Refinements to the spindle result in increased
stiffness and rigidity, reducing tool chatter. In addition, meticulous
attention to the platform's design has reduced potential machine
movement and associated thermal growth that could cause inaccuracies
during the cutting of long programs. These features help retain
superior accuracy during long periods of unattended operation.
The V33i features a shortened spindle
that is more stiff and rigid than other vertical machining centers of
its size. By decreasing the length of the spindle, the V33i platform is
able to operate – vibration free – over a wider range of spindle RPMs
therefore reducing chatter and improving both surface finish and tool
life. In addition, refinements have been made to the lubrication system
design to tightly control (or eliminate) spindle thermal growth during
long and continuous, high-speed hardmilling – typical of die and mold
applications.
The V33i is equipped with a 20 HP,
20,000-rpm spindle. For higher speed machining, Makino offers optional
30,000 and 40,000-rpm spindles. Spindle nose configurations are
available in Cat #40, HSK 63A and 63F, HSK – E50 and HSK – E32 to
support a wide variety of tooling and applications.
Cooling and Lubrication
Makino’s V-series high speed spindle features a patented spindle core cooling system
which circulates chilled coolant through the spindle and bearing
packages, dramatically reducing spindle growth. Increased lubricant
flow in the V33i and V33i-5XB further minimizes thermal growth,
providing superior accuracy and an increased bearing life.
The machine’s strength and accuracy
is due in part to its massive castings. Integral, hardened and ground,
hand-scraped guideways provide outstanding geometric tolerances and
extremely precise positioning and repeatability. The no-overhang, fully
supported construction insures peak motion performance with no lost
motion or unsupported components during motion – which guarantees tight
dynamic tolerances for hardmilling of complex, three-dimensional,
sculptured surfaces.
Temperature controlled lubricant is
used throughout the machine to minimize thermal growth during cutting.
Cooled elements such as core-cooled ball screws, lubricated ball nuts,
a servomotor cooling jacket system, and temperature-controlled
passageways provide superior structural temperature control.
Controlling the impact of machine movement on thermal characteristics
reduces temperature impact on the machining process and provides
sustainable, long-term, dynamic accuracy.
Accuracy Over Time
“During long hardmilling jobs, many
machines begin to lose their accuracy,” says Bill Howard, Makino VMC
product manager. “Being able to hardmill accurately while leaving the
machine unattended enables shops to reduce costs and decrease cycle
times, which is exactly what the V33i and V33i-5XB machines are
designed for.”
In addition, both the V33i and
V33i-5XB are equipped with the latest version of Makino’s Proprietary
Super Geometric Intelligence (SGI.4) control software to improve feedrates, accuracy, and reduce part
cycle times by 40% - or more - compared with the prior generation of
software.
Makino is a global provider of
advanced machining technology and application support, where new
thinking takes shape for the metalcutting and die/mold industries.
Makino manufacturing and service centers are located in the United
States, Japan, Germany, Singapore, Italy, France, Korea, Taiwan,
Turkey, China, Mexico, Brazil and India, and are supported by a
worldwide distributor network. For more information call
1.800.552.3288, or visit www.makino.com.
# # #
Images: TIF JPG
Visit www.makino.com/media for additional releases, images, and other information. Media Contact
Brandon Rhoten
HSR Business to Business
513.346.3588
makino@hsr.com
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