CNC Precision Cylindrical Grinding Machine

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 swivelling 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.

TECHNICAL SPECIFICATIONS

CAPACITIES

UNITS

CGM-650

CGM-1250

CGM-1650

Centre Height

mm

150/175*

175

175/225*

Grinding Length

mm

600

1000/ 1200

1600

Max Weight of Job between centre

kg

50

50/100

100/150

LONGITUDINAL SLIDES

Max. Travel

mm

750

1150/1350

1750

Table Speed

m/min

0-10

0-10

0-10

Swivel Range

Degree

-3+12

-3+8

-3+7

Min Resolution

mm

0.0001

0.0001

0.0001

Power

Nm

8

12

12

INFEED SYSTEM

Max. Travel

mm

280

280

280

Power

Nm

8

12

12

Min. Resolution

mm

0.0001

0.0001

0.0001

Side Speed

m/min

 0-10

 0-10

 0-10

WHEEL HEAD

Grinding Wheel

(ODxWxID)

Mm

500x50x203.2

500x50x203.2/

600x80x304.8

500x50x203.2/

600x80x304.8

Power

kw

5.5/7.5*

7.5/11

7.5/11

Cutting Speed

m/sec

33/45*

33/45

33/45

Cone Size

mm

50/63*

63/80

63/80

WORK HEAD

Spindle Taper

MT

5

5/6

5/6

Spindle Speed

rpm

0-750

0-750

0-750

Swivel Range

deg

0-30

0-30

0-30

Power

kW

0.75

0.75/1.5

0.75/1.5

TAIL STOCK

Quill Travel

mm

40

40

40

Centre Taper

 

4

4/5

4/5

Micro Taper Connection on Dia.

mm

+0.04

+0.1

+0.1

GENERAL

Centralised Lubrication Motor

KW

0.12

0.12

0.12

Coolant Pump Motor

KW

0.25

0.25

0.25

Total Weight

Kg

2500

4000

5000

Total Power requirement

Kw

10

20

20

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

Length 500mm

Surface Roughness (RA)

Max.

Micron

0.4

0.4

0.4

NOTE:

* Optional