Grinding Machine SFG-28 suitable for freeform shape
SFG-28 has accomplished the roundness and flatness of 0.1μm.
It is equipped with 2 grindstone spindles of 30,000 rpm. 80,000 rpm and 2 truing units as standard.
SFG-28 system enables a succession of freeform grinding of
radius, taper, and straight shape of inside/outside diameter
highly accurately using the grindstone.
Grinding shape or dimension can be automatically measured by the measuring equipment and automatically compensated without
unloading the workpiece from chuck.
The least command increment of X,Z axes is 10nm (full closed control).
High-precision ceramic bearings assure high rigidity and high rpm
precision for both work spindle and grindstone spindles.
Temperature regulator is provided as standard, and special
thermal control for slide, spindle or each necessary part has been employed, which ensures thermal stability.
| Spindle
speed |
100~3000rpm |
| Main
spindle through-hole diameter |
 20mm |
| Grinding
Spindle |
two(with
eccentric ring center height adjustment
mechanism) |
| Tooling
system |
2
horizontal spindles (manual rotation
±15 degrees) |
| X.Y-axis
travel max. |
X
spindle:300, Z spindle:220 |
| Rapid
Traverse |
4000mm/min |
| Main
motor |
AC
Spindle motor 1.5/2.2kw |
| NC
device |
FANUC-21iT(0.01μm
specification) |
|
|
