TPT-January-2015

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Technology News
January 2015 31
Precision all-electric tube hone
SUNNEN’S new HTR all-electric
job-shop tube hone combines servo
precision and cycle-automation features
with constant spindle power and 0.1mm
(0.004") stroke repeatability to efficiently
hone blind bores or correct tight spots
in a bore without operator intervention.
Designed and equipped to hone the
wide variety of parts encountered in
a job shop, the machine handles bore
IDs up to 900mm (35.41"). Its modular
design can be configured for stroke
lengths from 2.5 to 14m (8 to 46.2ft).
For job-shop versatility and
productivity, the HTR’s 12kW (16 HP)
spindle motor, combined with a four-step
gearbox, produces a constant power
band through the entire speed range of
10-470 rpm for fast metal removal. The
standard servo rotary tool feed can also
function as a push-feed system with an
optional drive shaft that converts rotary
to linear motion, allowing the machine to
handle the full range of Sunnen heavy-
duty and two-stage tools.
Tool overload monitoring ensures
optimal stock removal rates, while
protecting the tool and workpiece.
Precision stroke position and
repeatability are ensured with a servo
rack-and-pinion stroking system. The
spindle carriage is driven at speeds
of 0.1 to 48m/min (4" to 157ft/min) on
hardened and ground ways with a
10.2kW (13.6 HP) servomotor, giving
the machine power to handle super-
abrasives for fast material removal.
The HTR’s design eliminates
hydraulics to reduce maintenance,
noise, leakage and heat, as well as
system hysteresis due to heating of
hydraulic oil. The machine’s 305mm
(12") Windows touchscreen PC control
manages all machine functions,
including stroke speed/position, tool
feed, spindle speed, stone wear
compensation and cutting pressure.
Standard control features include
size lock, automatic bore geometry
correction, recommended set-ups, tool
overload protection, spark out, spindle
jog and short stroke. The control can
store up to 900 different part programs
and be configured for 13 languages.
The HTR’s optional easy-to-setup
fixturing is available in two ranges, for
40 to 600mm parts (1.6" to 31.8"), or 50
to 810mm parts (2" to 31.8"); part weight
capacities are 6,000kg (13,230lb) and
8,000kg (17,640lb), respectively. The
fixtures ride on a linear bearing system
to allow easy positioning.
Multiple coolant system configurations
are available to tailor for process
requirements. Other options include in-
process gauging, tapered-bore capability,
part rotation device, moving steady rests
for 2m and 4mmodels, two-stage honing,
air conditioned electrical cabinet and CE-
compliant safety system.
Sunnen Products Company – USA
Fax: +1 314 781 2268
Email:
Website:
Sunnen’s HTR tube hone
Tube bending machines
OP has introduced the new C50EL
and C22EL bending machines
which are dedicated to processing
hydraulic tubes. Both machines are
suitable for bending tubes up to 180°
in both stainless steel (AISI 316 TI)
and carbon steel (ST 37.4) with the
distinctive characteristic of having
a different ability: the C50EL model
allows machining up to a 50mm
maximum external diameter while the
C22EL version allows bending up to a
22mm diameter.
The adjustment of the desired angle
is an intuitive operation thanks to the
graduated protractor that is simple to read
and set; the change of tools is particularly
quick and it does not require the help of
any tool. Besides the use buttons, the
machine control panel is completed by
the LED alarms for setting adjustment and
system malfunctions. Pedal and special
voltage are available upon request.
OP – Italy
Website:
The OP bending
machine in operation