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Shenzhen Poly Top Industry Development Co.,Ltd.
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 Click to enlarge image
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 Origin |
China |
| Model Number |
PTMGE Series |
| Brand Name |
PolyTop |
Pefromance:
High precision universal cylindrical grinding machine;
High precise alignment of spindle head and solid support ensure ideal machining results with various grinding processes;
Versatility due to table, headstock, and grinding headstock swivel;
Wide speed range of workpiece spindle;
Stable running without noise can be achieved because of adopting screw pump in hydraulic system;
High rotating precision and strong rigidity can be obtained by sleeve-type whole-tile moving hydraulic bare shaft system on the spinlde of wheel head;
Slideway is covered by the plastic so it can gain slow speed running and high immunity to vibration;
The models with MGB can be perform high precision semi automatic cutting, longitudinal grinding to make high precision parts by using limited stroke or controlled by process gauge in small batch or mass production;
For models with MGB, all grinding function and sequences of action during processing cycle are controlled by programmable logical controller (PLC);
Quality by CE certificate.
Standard Accessories:
Balancing arbor
Balancing steady for grinding wheel
3-jaw chuck
Internal grinding attachment
Grinding wheel tray
Coolant tank
Stand grinding wheel dresser
Optional Accessories:
Close centre rest
Open centre rest
4-jaw chuck
Automatic measure indicator (only for models with MGB)
Paperty filter
Main Technical Data:
| Specification |
Models
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PTMG1320E
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PTMG1332E
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PTMG1420E
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PTMG1432E
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PTMGB1320E
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PTMGB1332E
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PTMGB1420E
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PTMGB1432E
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500, 750, 1000
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500, 750, 1000
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500, 750, 1000
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500, 750, 1000
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| Center height (mm) |
125
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180
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125
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180
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| Max.length of workpiece between centers (mm) |
520, 765, 1080 |
520, 765, 1080 |
520, 765, 1080 |
520, 765, 1080 |
| Max.workpiece diameter for external (mm) |
240
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350
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240
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350
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| Max.grinding length (mm) |
500, 750, 1000
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500, 750, 1000
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500, 750, 1000
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500, 750, 1000
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| External grinding range (mm) |
Φ5--Φ200
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Φ5-Φ320
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Φ5-Φ200
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Φ5-Φ320
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Internal grinding range (mm)
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-
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-
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Φ13-Φ80
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Φ16-Φ125
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| Depth of internal grinding (bigger than Φ45mm) (mm) |
-
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-
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110
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140
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| Max.weight of workpiece between centers (kg) |
50
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100
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50
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100
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| Grinding wheel |
dimensions (mm) |
(outerdiameter×width×bore) 400×(32-50)×203
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| max.linear velocity |
35 m/sec
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| Swivelling angle of table |
clockwise |
9 , 8 , 3 |
9 , 8 , 3 |
9 , 8 , 3 |
9 , 8 , 3 |
| counter-clockwise |
9 , 8 , 7 |
9 , 8 , 7 |
9 , 8 , 7 |
9 , 8 , 7 |
| Taper hole of spindle(Morse) |
workhead |
Morse 4#
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| tailstocd |
Morse 3#
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| Total power (kw) |
4.775
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4.775
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5.325
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5.525
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| Net weight (kg) |
2500,3000,3500
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2500,3000,3500
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2500,3000,3500
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2500,3000,3500
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| Overall dimensions |
L (mm) |
2750,2870,3700
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2750,2870,3700
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2750,2870,3700
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2750,2870,3700
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| W (mm) |
2000
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| H (mm) |
2100
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Working Accuracy:
| NO |
Inspection character |
Test piece diagram and grinding condition |
Inspection item |
MG1320E
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MG1332E
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MG1420E
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MG1432E
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MGB1320E
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MGB1332E
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MGB1420E
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MGB1432E
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500,750
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1000
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500,750
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1000
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500,750
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1000
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500,750
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1000
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| P1 |
The grinding accuracy of test piece between centers |
L=150 d=50 |
circularity (mm ) |
0.0005
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| L=200 d=60 |
| L=350 d=35 |
Consistencey of diametr in longitudinal section (mm) |
0.003
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-
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0.003
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-
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0.003
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-
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0.003
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-
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| L=750 d=75 |
-
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0.005
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-
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0.005
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-
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0.005
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-
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0.005
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| L=150 d=50 |
roughnese (μm) |
Ra≤0.01
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-
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Ra≤0.01
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-
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| L=200 d=60 |
-
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Ra≤0.01
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-
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Ra≤0.01
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| P2 |
The grinding accuracy of short test Piece on chuck |
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circularity (mm) |
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0.002
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| roughnese (μm) |
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Ra≤0.04
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| P3 |
The accuracy of test internal grinding on chuck |
L=50 d=30 |
circularity (mm) |
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0.002
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| L=100 d=60 |
roughnese (μm) |
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Ra≤0.04
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| P4 |
The accuracy for external grinding for Plunge-in test piece |
L=30 d=25 |
Consistency of diametr in grinding a batch of spare parts (mm) |
Fixed distance grinding: 0.01 |
Fixed distance grinding: 0.012 |
Fixed distance grinding: 0.01 |
Fixed distance grinding: 0.012 |
| L=30 d=25 |
Automatic gauge: 0.004 |
Automatic gauge: 0.005 |
Automatic gauge: 0.004 |
Automatic gauge: 0.005 |
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