CNC Precision Cylindrical Grinding Machine


Model No. :-
CGM-650 CNC
CGM 1250 / 1650 CNC

Machine Bed 
It is the box structure design made of cast iron with high static and dynamic rigidity that is achieved through optimum ribbing.

Work Head
High roundness accuracy of (0.002mm/ 0.001mm / 0.0005mm) could be achieved through the work head. With Simple adjustment both “between center’s and “live spindle” grinding could be performed on the universal swiveling work head MT-5 taper, poly V belt on the work spindle are idle for finest grinding for the heavy components. It consists of AC induction motor with inverter to achieve variable speed (programmable).

Wheel HEAD
The wheel could be swiveled through +45 degree. It also has the angular wheel head feature that allows the grinding of both face and OD. To maintain the constant wheel Speed as the wheel diameter goes down, there is an option for continuous variable speed for the wheel.

In-Feed System
The wheel slide moves on the hardened and ground pre-loaded roller guideways and it guarantees the repeat positioning accuracy of 2micron. It also provides the stick slip free movement. The in-feed slide is moved by a ball screw assembly, which is driven through a servo meter.

Tail Stock:
The Tail Stock is specially designed and has an upper casting moving on precision, hardened ground, pre-loaded roller guideways. There are options of providing fine taper setting of +40 microns and hydraulic actuation on the tail stock. It’s a clearance free system and hence provides high rigidity and longer life.

Spindles:
This achieves a very high dimensional stability and long life through special heat treatment. As the work head the wheel head spindles run on multipoint hydrodynamic bearings. It provides them exceptionally high running accuracy and rigidity. All spindles are of cartridge type design. High precision spindles are made up of special alloy steel.

Table Slide:
The Table slide contains work head and tail stock assembly on the top of it. It is moved by a ball screw assembly, which is driven through a servo meter.
 
CAPACITIES UNITS CGM-400 AP CGM-650 AP CGM-1250 AP
Centre Height mm 150/175 175 175
Distance between centers mm 325 650 1250
Max. Grinding Length mm 250 500 1000
Max. load held betweencenters kg 50 50 60
LONGITUDINAL SLIDES
Max. Travel mm 400 750 1350
Table Speed m/min 0-10 0-10 0-10
Swivel Range Degree -3+15 -3+12 -3+8
X-axis min resolution increment mm 0.0001 0.0001 0.0001
Power Nm 11 11 11
INFEED SYSTEM
Max. Travel mm 280 280 280
Power Nm 11 11 11
Z-axis min. resolution increment mm 0.0001 0.0001 0.0001
Side Speed m/min  0-10  0-10  0-10
WHEEL HEAD
Max. grinding wheel dimensions mm 500x50x203.2

500x50x203.2/

600×60/80/100×304.8

500x50x203.2/

600×60/80/100×304.8

Power kw 5.5 5.5/7.5 7.5/11
Cutting Speed m/sec 30/45 30/45 30/45
WORK HEAD
Center MT 4 4 4/5
Spindle Speed rpm 0-750 0-750 0-750
Swivel Range deg 0-30 0-30 0-30
Power kW 0.75 1.1 1.5
TAIL STOCK
Quill Travel mm 40 40 40
Centre Taper  MT 4 4 4/5
Micro Taper Connection on Dia. mm +0.04 +0.04 +0.04
GENERAL
Centralised Lubrication Motor KW 0.12 0.12 0.12
Coolant Pump Motor KW 0.25 0.25 0.25
Controller   FANUC/SIEMENS FANUC/SIEMENS FANUC/SIEMENS
Total Power requirement Kw 8 8 10
OTHERS
Machine Dimensions mm 2000X3000 3000X3500 3000X4500
Machine Weight Kg 3000 4000 4500
GUARANTEED ACCURACY (On Standard test piece)
Roundness on live spindle mm 0.002 0.002 0.002
Cylindricity over grinding mm 0.004 0.004 0.004

Surface Roughness (RA)

Max.

Ra 0.4 0.4 0.4