CNC EXTERNAL GRINDING MACHINE
ECG 800 - 1250 (CNC External Grinding Machine)
ECG Series (Straight / Angular )
MACHINE BASE
The machine base is manufactured of one piece close grained graded cast iron. Box type design, heavily reinforced with ribs, provides high rigidity and stability.
MACHINE GUIDEWAYS
- V & Flat guide ways precisely hand scrapped for Cross (X-Axis) & Table slides (Z-Axis) with turcite coating which gives stick slip free movement
- Excellent vibrations damping and high positioning accuracy, which insures better lubrications and longer life of guide ways.
- The X-Axis can be equipped with linear measuring system, depending upon requirements (Optional).
WORK HEAD
- Dead Centres as standard, live cum dead centres as optional
- Easy belt tensioning arrangement.
- Special arrangements provided in front to avoid entry of coolant inside work head.
WHEEL HEAD
- Cartridge type grinding wheel spindle operating at 45 m/s cutting speed & with precision anti friction bearings. Constant Cutting Speed of grinding wheel though variable speed drive (Optional)
- Robust wheel head with anti-friction bearings is maintenance free has good thermal stability.
TAIL STOCK
- Rigid design and facility for adjusting Tail stock quill clearance.
- Hydraulic actuation (Optional)
- Micro correction attachment for taper settng +0.030 (Optional)
- Robust design of machine elements with high reliability and easy maintainability.
- The ECG Series is developed for grinding of mass and batch production of medium and heavy size components. This machine offer a cost effetive solution with straight or angular wheel head option.
OPTIONAL ACCESORIES
AUTOMATIC IN-PROCESS GAUGE
IPG automatically and continuously measures the diameter being ground and compares the actual size to pre-set values. Confirming the diameter to the accurate dimension.
FLAGGING
Detects the end face position on work piece, reduces idle time and ensure safety.
DYNAMIC BALANCING SYSTEM
Dynamically compensates the imbalance of grinding wheel. Balancing system improve the surface finish and geometry of the work piece.
GAP ELIMINATOR / CRASH CONTROL
This device will automatically detect the setting up or machining condition occurs, the grinding wheel will rapidly retract for safety.
LINEAR SCALE FOR X AND Z AXIS
Gives actual slide movement feedback to CNC system up to submicron level.
| DISCRIPTION | UNIT | 500 | 800 | 1000 | 1250 | |
| CAPACITY | ||||||
| Swing over Table | mm | 300 | 300 | 300 | 300 | |
| Admit Between Centres | mm | 500 | 800 | 1000 | 1250 | |
| Maximum Grinding Diameter | mm | 200 | 200 | 200 | 200 | |
| Maximum weight of job between centres | kg | 80 | 80 | 80 | 80 | |
| WHEEL SLIDE (X-AXIS) | ||||||
| Guide ways type | V and Flat (LM Guide)* | V and Flat (LM Guide)* | V and Flat (LM Guide)* | V and Flat (LM Guide)* | ||
| Rapid feed rate | m/min | 10 | 10 | 10 | 10 | |
| Resolution of X-AXIS | mm | 0.001 | 0.001 | 0.001 | 0.001 | |
| TABLE (Z-AXIS) | ||||||
| Guide ways type | V and Flat | V and Flat | V and Flat | V and Flat | ||
| Swivelling Angle | deg. | 6° to 2° = 8° | 6° to 2° = 8° | 6° to 2° = 8° | 5° to 2° = 7° | |
| Rapid feed rate | m/min | 10 | 10 | 10 | 10 | |
| Resolution of Z-AXIS | mm | 0.001 | 0.001 | 0.001 | 0.001 | |
| WHEEL HEAD | ||||||
| Spindle Design | Cartridge type with Anti friction bearings | |||||
| Grinding wheel Size (OD x W) | mm | 500 x 80 | Surface Speed | m/s | 45 / 60* | 45 / 60* | 45 / 60* | 45 / 60* |
| Motor Power | kW | 5.5 | 5.5 | 5.5 | 5.5 | |
| WORK HEAD | ||||||
| Centre | MT | 5 | 5 | 5 | 5 | |
| Spindle Speed | RPM | 50 – 500 | 50 – 500 | 50 – 500 | 50 – 500 | |
| TAIL STOCK | ||||||
| Centre | MT | 4 | 4 | 4 | 4 | |
| Quill Travel | mm | 40 | 40 | 40 | 40 | |
| Taper Correction (Optional) | mm | 0.040 | 0.040 | 0.040 | 0.040 | |
| CONTROL SYSTEM | FANUC / SIEMENS | |||||
| GENERAL | ||||||
| Operation voltage | Volts | 415 +/- 10 % AC 3 Phase | ||||
| Floor Space (without coolant tank) | mm | 2900 x 1700 | 3500 x 1700 | 3900 x 1700 | 4400 x 1700 | |
| Floor Space (with coolant tank) | mm | 2900 x 2500 | 3500 x 2500 | 3900 x 2500 | 4400 x 2500 | |