Grinding

SHARDA External CNC Grinders

Latest construction and state –of-the-art CNC Technology, that is combine in order to meet the customer’s requirement. An efficient and flexible machine for any Internal Grinding application suitable for small and large scale production.

Categories: CNC Grinding Machines, External CNC Grinding Machines Tags: ECG-1000, ECG-1250, ECG-500, ECG-800, external cnc grinder

Product Description

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 33 m/s or 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 setting + 0.030 (Optional)

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Accessories
Technical Specification

Automatic In-Process Guage: IPG automatically and continuously measures the diameter being ground and compares the actual size to preset 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.

Lineal Scale for X and Z axis: Gives actual slide movement feedback to CNC system up to submicron level, 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 offers a cost effective solution for external cylindrical grinding application with straight or angular wheel head option

Specification	ECG-500	ECG-800	ECG-1000	ECG-1250
Capacity
Swing over Table	300 mm	300 mm	300 mm	300 mm
Admit Between Centres	500 mm	800 mm	1000 mm	1250 mm
Maximum Grinding Diameter	200 mm	200 mm	200 mm	200 mm
Maximum weight of job between centres	80 kg	80 kg	80 kg	80 kg
Wheel Slide (X-AXIS) (Straight / Angular)
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	7	7	7	7
Resolution of X-AXIS	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
Rapid Feed Rate	7	7	7	7
Resolution of Z-AXIS	0.001	0.001	0.001	0.001
Wheel Head
Spindle Design	Cartridge type with Anti friction bearings	Cartridge type with Anti friction bearings	Cartridge type with Anti friction bearings	Cartridge type with Anti friction bearings
Grinding Wheel Diameter	400 / 500	400 / 500	400 / 500	400 / 500
Grinding Wheel Width	50 / 80	50 / 80	50 / 80	50 / 80
Surface Speed	33 / 45*	33 / 45*	33 / 45*	33 / 45*
Motor Power	3.7 / 5.5*	3.7 / 5.5*	3.7 / 5.5*	3.7 / 5.5*
Work Head
Spindle Nose Taper	4 / 5*	4 / 5*	4 / 5*	4 / 5*
Spindle Speed	50 – 500	50 – 500	50 – 500	50 – 500
Tail Stock
Spindle Nose	3 / 4*	3 / 4*	3 / 4*	3 / 4*
Quill Travel	25	25	25	25
Taper Correction (Optional)	+ 0.030	+ 0.030	+ 0.030	+ 0.030
Control Systems
Installed	FANUC / SIEMENS	FANUC / SIEMENS	FANUC / SIEMENS	FANUC / SIEMENS
General
Operation Voltage	415 +/- 10 % AC 3 Phase	415 +/- 10 % AC 3 Phase	415 +/- 10 % AC 3 Phase	415 +/- 10 % AC 3 Phase
FLOOR SPACE (WITHOUT COOLENT TANK)	2900mm X 1700mm	3500mm X 1700mm	3900mm X 1700mm	4400mm X 1700mm
FLOOR SPACE (WITH COOLENT TANK)	2900mm X 2500mm	3500mm X 1700mm	3900mm X 2500mm	4400mm X 2500mm

Grinding

Grinding

Optional Accessories

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