HÖFLER Porta 3500 CNC spur/helical, internal/external gear grinding
machine
suitable for the precision, finish grinding of both internal and
external spur and helical gears
New 2007, installed in 2010
The machine is of the later generation HÖFLER Porta series traveling
gantry machine design, and has been found to be in first class
condition throughout, having had only 6,800 hours of total use since
initial installation. Arrangements for the physical inspection of the
machine, can be made by appointment, with one week’s prior
notice.
Table diameter
……………………………………………………………
…. 92.5” (2350mm)
Maximum tip circle diameter (external grinding)
…………………137.8”(3500mm)
Minimum root circle diameter (external grinding)
………………. 3.9”(99.06mm)
Maximum tip circle diameter (internal grinding)
…………………. 31.5”(800.1mm)
Maximum root circle diameter (internal grinding)
………………... 129.9”(3299.46mm)
Maximum diameter workpiece
……………………………………..
137.8”(3500mm)
Maximum number of teeth ground
………………………………… unlimited
Maximum tooth profile height
………………………………………..
3.15”(80.01mm)
Maximum diametral pitch (module)
………………………………… 1.34 DP(20 module)
Maximum helix angle
………………………………………………… +/-
45˚
Maximum grinding stroke (external grinding)
……………………… 65”(1651mm)
Maximum grinding stroke (internal grinding)
………………………. 47.2”(1199mm)
Maximum loading on table
…………………………………………………. 88,105
Lbs (40,000kg)
Equipped with:
• Integrated gear inspection system with HÖFLER inspection and
evaluation software
• full machine enclosure with power operated guard doors
and oil-mist exhaust system
• SIEMENS 840-D CNC” control with gear grinding software for
grinding
spur and helical, internal and external gears
• machine integrated gear inspection system for profile, lead and
spacing
(fp, fu and Fp) checks of external and internal gears E5337227 from
module ≥1 mm,
including the HÖFLER inspection and evaluation software.
• complete coolant plant with filtration unit and chiller system
for grinding and hydraulic oil
• SMW Accusmart-65” diameter rotary work-table
• two (2) grinding spindles
-grinding spindle for spur and helical, internal and external gears
with CNC dressing unit
-stroke slide with ID / OD face-grinding spindle with dresser
• assorted auxiliary work-tables, work-fixtures, and chucks,
including table mounted work support bracket-segments for
larger diameter work-pieces
• full complement of electrics (motors/controls), with
air-conditioned
switch-gear cabinet, all buss-ducting and connection cables
(currently arranged for 480 Volt, 60Hz operation)
• misc. wrenches, spanners, operator’s tools with cabinet
• machine leveling shoes
• full machine documentation (operator’s manual for machine and
controller,
parts list, electrical and hydraulic diagrams, etc.)
USA
