Supertec Machinery
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12
Universal cylindrical grinding machines
CNC UNIVERSAL CYLINDRICAL GRINDER
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PMG-CNC Series
Supertec Machinery, Inc.
Universal cylindrical grinding machines
PMG-60/100CNC(A/B)
Wheel Head: PMG series use the wheel head (Automatic B-axis) with 2 OD wheels and 1 ID wheel, for performing complex grinding operations, such as OD / Taper / ID grinding operations, under one setup to reduce cycle time, operation costs, and get better accuracy performances. CNC controlled wheel head (B-axis) with servo motor output 1.2 kw B-axis swivel range from 35° CCW to195° CW OD spindle motor output 5HP, equipped with CE certified safety cover OD wheel size (LHS) Ø405 x 50 xØ127 mm OD wheel size (RHS) Ø355 x 38 xØ127 mm CNC program controlled wheel rotation shifting mechanism (15 levels), ensure cutting capacity Special Coolant System design: Coolant flow through the whole machine via nozzle system during the grinding operation. Extra heat will be taken away to prevent transformation, ensure the accuracy performance. Grinding chips will be washed away by the current to keep the cleanness of the machine.
GP-CNC Series
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Plunge Type Cylindrical Grinder
Supertec Machinery, Inc.
Universal cylindrical grinding machines
GP-CNC Series
Machine Base
The heavily ribbed box-type base is made of Meehanite casting, providing excellent rigidity to ensure machine stability. Optimum distance between the guideways offers excellent table support to increase Z axis positioning accuracy and repeatability.
Workhead
The sturdy rigid-designed workhead equipped with precision bearings is electronically controlled giving variable spindle speeds. Workhead swivels 90°counterclockwise to 30°clockwise for various grinding operations. A combination live and dead-type spindle allows for quick changeover from center to chuck operation or vice versa. A dual oil seal and cover prevent coolant seepage into the workhead.
Tailstock
The design of the tailstock is both rigid and robust. Housed in a Meehanite case body, the hardened nitralloy steel sleeve is designed to carry a MT3 center for G20P/G25P. Movement of the sleeve is adjusted by a knob to give a light or heavy load. An optional hydraulic tailstock with foot pedal is available for easy loading and unloading of parts.
Wheel Spindle
Combinations of hydrostatic and hydrodynamic bearings are surrounded by a high pressure oil film, which eliminates metal-to-metal contact and provide high rigidity as well as high vibration damping performance. A pressure switch interlock prevents spindle start-up until oil pressure is established. The pressure switch interlock also stops the spindle if oil pressure fails. Both features ensure high accuracy and longer spindle life.
Saddle
Both the double V and flat guideways are hand scraped and Turcite coated, and utilize an automatic lubrication system, precision ballscrew, AC servo motor and a 0.001mm (0.000020”) linear feedback system. This combination allows for a smooth movement of the wheelhead which delivers a longer way life with superior positioning accuracy and repeatability. The enlarged and properly sloped drainage troughs under the wheelhead base help to control thermal growth and provides the rapid coolant drainage needed during heavy grinding cycles.
Automatic Lubrication System
Slideways, ballscrews and spindle are continuously lubricated by an auto-lube system to ensure long service life and maintain maximum accuracy. Hydraulics coolant and lubrication systems are separated from machine to eliminate vibration and dissipate heat.
System for Automation
A highly-automated grinding system can be customized with a wide selection of optional equipment including an automatic OD sizing device, gap control, crash control and touch probe for axial positioning.
Optional Internal Grinding Attachment
The hinged, swing-down internal grinding attachment swings down into working position easily and quickly. A patented locking device adds safety as it prevents the ID attachment from swinging down abruptly.
Universal Cylindrical Grinder PMG Series
PMG series use the wheel head (Automatic B-axis) with 2 OD wheels and 1 ID wheel, for performing complex grinding operations, such as OD / Taper / ID grinding operations, under one setup to reduce cycle time, operation costs, and get better accuracy performances..
CNC controlled wheel head (B-axis) with servo motor output 1.2 kw
B-axis (±2.0”)PR or (±5.0”), can equipped with either Heidenhain or Fagor encoder.
OD spindle motor output 5HP, equipped with CE certified safety cover
OD wheel size (LHS) Ø405x 50 xØ127 mm
OD wheel size (RHS) Ø305 x 25 xØ127 mm
Special Coolant System design
Coolant flow through the whole machine via nozzle system during the grinding operation. Extra heat will be taken away to prevent transformation, ensure the accuracy performance. Grinding chips will be washed away by the current to keep the cleanness of the machine
Machine Base
The heavily ribbed box-type base is made of Meehanite casting, providing excellent rigidity to ensure machine stability. Optimum distance between the guideways offers excellent table support to increase Z axis positioning accuracy and repeatability.
Workhead
The sturdy rigid-designed workhead equipped with precision bearings is electronically controlled giving variable spindle speeds. Workhead swivels 90°counterclockwise to 30°clockwise for various grinding operations. A combination live and dead-type spindle allows for quick changeover from center to chuck operation or vice versa. A dual oil seal and cover prevent coolant seepage into the workhead.
Tailstock
The design of the tailstock is both rigid and robust. Housed in a Meehanite case body, the hardened nitralloy steel sleeve is designed to carry a MT3 center for G20P/G25P. Movement of the sleeve is adjusted by a knob to give a light or heavy load. An optional hydraulic tailstock with foot pedal is available for easy loading and unloading of parts.
Wheel Spindle
Combinations of hydrostatic and hydrodynamic bearings are surrounded by a high pressure oil film, which eliminates metal-to-metal contact and provide high rigidity as well as high vibration damping performance. A pressure switch interlock prevents spindle start-up until oil pressure is established. The pressure switch interlock also stops the spindle if oil pressure fails. Both features ensure high accuracy and longer spindle life.
Saddle
Both the double V and flat guideways are hand scraped and Turcite coated, and utilize an automatic lubrication system, precision ballscrew, AC servo motor and a 0.001mm (0.000020”) linear feedback system. This combination allows for a smooth movement of the wheelhead which delivers a longer way life with superior positioning accuracy and repeatability. The enlarged and properly sloped drainage troughs under the wheelhead base help to control thermal growth and provides the rapid coolant drainage needed during heavy grinding cycles.
Automatic Lubrication System
Slideways, ballscrews and spindle are continuously lubricated by an auto-lube system to ensure long service life and maintain maximum accuracy. Hydraulics coolant and lubrication systems are separated from machine to eliminate vibration and dissipate heat.
System for Automation
A highly-automated grinding system can be customized with a wide selection of optional equipment including an automatic OD sizing device, gap control, crash control and touch probe for axial positioning.
Optional Internal Grinding Attachment
The hinged, swing-down internal grinding attachment swings down into working position easily and quickly. A patented locking device adds safety as it prevents the ID attachment from swinging down abruptly.
Universal Cylindrical Grinder PMG Series
PMG series use the wheel head (Automatic B-axis) with 2 OD wheels and 1 ID wheel, for performing complex grinding operations, such as OD / Taper / ID grinding operations, under one setup to reduce cycle time, operation costs, and get better accuracy performances..
CNC controlled wheel head (B-axis) with servo motor output 1.2 kw
B-axis (±2.0”)PR or (±5.0”), can equipped with either Heidenhain or Fagor encoder.
OD spindle motor output 5HP, equipped with CE certified safety cover
OD wheel size (LHS) Ø405x 50 xØ127 mm
OD wheel size (RHS) Ø305 x 25 xØ127 mm
Special Coolant System design
Coolant flow through the whole machine via nozzle system during the grinding operation. Extra heat will be taken away to prevent transformation, ensure the accuracy performance. Grinding chips will be washed away by the current to keep the cleanness of the machine
