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Technical data: |
CNC Automatic Precision Profile Gear Grinding Machine, suitable for the grinding of external spur and helical gears, pinions, splines and other workpieces of similar profile, up to 55" (1400 mm) pitch diameter.
This is a first class machine in superlative condition throughout, corresponding to the hereto attached copies of factory literature, featuring the following:
EQUIPMENT/FEATURES:
- Base machine with main grinding head carriage/column
- Work table group with large double-worm index drives for zero
backlash, w/hydrostaic table bearing
- External grinding head capable of using both galvanized,
grinding motor load display w/over-load signal
- Automatic grinding head swivel and clamping; CNC-controlled
within the work cycle, swivel angle input/resolution .001 degree
- Axial and radial feed drives w/independent servo motors and pre-loaded ball screws
- Automatic lubrication system:
* recirculating and shot lubrication of mechanical drive elements
* oil mist lubrication of grinding spindle bearings
* automatic shot lubrication of all guideways and other areas with every cycle of machine
* electrical monitoring of oil filter contamination
Equipment /Features continued:
SIEMENS “System-3” CNC controller with CRT & profile grinding software
including software for fault diagnostics, (display in English),
* electronic handwheel for fine control of all CNC axes
* values in both inch and metric execution
* fully programmable work cycles and CNC M-function/features
for the following inputs, and cycles in various combinations:
- climb and conventional grinding
- axial grinding
- crown and/or taper grinding in both circular and/or linear interpolation
- end relief
- entry and exit feed control
- multi-cut cycle w/selection of infeed, feed rate and feed direction for
each grinding pass, and table rotation CW or CCW
- size correction
- grinding spindle speeds
- number of teeth
- helix angle
* auxiliary displays (operating status) controlled grinding
- Complete coolant plant with filter and refrigeration unit for thermally controlled grinding w/high volume coolant flow w/ two (2) centrifugal pumps with a flow rate of 200 l/min
(53/GPM) each and coolant tank with a capacity of 2500 l (660 gal) and grinding oil
filtration with magnetic pre-separation and fine separation via paper band filter
- Oil cooling systems with cooling cycles for lubrication, grinding coolant, and grinding spindle motor drive
- Full machine work enclosure w/oil mist exhaust system/separator
- Full complement of electrics (motors/controls), with isolation transformer, (currently arranged for 480 volt, 60 cycles) 120 V AC control voltage, and CNC-controller, with two (2) heat exchangers for temperature regulation within control cabinet
- Set of machine levelling shoes
- Assorted grinding cutter mounts/arbors, wheel hubs
- Operator’s platform w/steps
- Full machine documentation, including operator's manuals for machine and controller, wiring and hydraulic diagrams, parts list
- Full machine work enclosure w/oil mist exhausts system/ separator
Siemans System 3 “CNC” controller with profile grinding software including software for fault diagnostics, (display in English)
PRINCIPLE SPECIFICATIONS:
Maximum workpiece diameter (nominal) 55" (1400mm)
Maximum center distance wheel arbor
to work table centerline (approx.) 39.3" (1000mm)
Minimum center distance wheel arbor
to work table centerline 17.32" (440mm)
Maximum axial travel 23.6 (600mm)
Lowest spindle center position above table 18.39" (467mm)
Highest spindle center position above table 41" (1050mm)
Maximum grinding wheel drive/load 20 kW
Grinding wheel spindle rpm range 2000-6300 rpm
Grinding wheel arbor taper 3.1" (80mm)
Maximum grinding wheel diameter 9.4" (240mm)
Maximum grinding wheel width 1.968” (50mm)
Maximum grinding profile depth 1.968" (50mm)
Grinding head tangential shift (via CNC) +/- 50mm
Rapid traverse speeds: Axial 78.7” (2000 mm/min).
Rapid traverse speeds: Radial 78.7” (2000 mm/min).
Work table diameter 47.24" (1200mm)
Work table bore diameter 11.8" (300mm)
Work table bore depth 34.45” (875mm)
Work table feed range (per/min.) .04-80" (1-2000mm)
Maximum table speed for work alignment 6.25 rpm
Maximum work table load w/fixture 17,600 lbs (8,000 kGs)
Work table height from floor 37.4" (950mm)
Machine approximate net weight 20.500 kGs
Machine floor space (see drawing)
INSPECTION: The machine is ready for immediate inspection.
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