A new CNC Orbital Grinder for crankshafts and camshafts for high productivity.

SIEMENS SINUMERIK 840D
- Last update version
- Teleservice
- Cam after-sale service

CBN GRINDING WHEEL
The peripheral rotation speed is constantly controlled by CNC. Grinding wheel unit is supported by hydrostatic guides on both X and Z axes. The grinding wheel is made by discs of 1.100 mm diameter covered by CBN tiles.

MARPOSS SHAPE CONTROL
Wheelhead unit
The guideways are covered with special anti-friction plastic material in order to:
• reduce the disengaging friction
• reduce the coefficient of general friction
• reduce the rubbing wear

BALL SCREW SYSTEM
Marposs P7 with Fenar L can detect shape error in the grinding process and can make the necessary correction.
This gives to the machine the possibility to reach unbelievable performance on accuracy!
With this system we obtain also the following advantages:
- No unloading of the part for measuring shape errors
- Real time machine monitoring
- Real time correction on working
- Reduction of global production time
- Reduction of global production costs

CNC WHEEL DRESSER
The machine is equipped with the CNC wheel dresser interfaced with the Sinumerik 840D
The dressing of the grinding wheel is done by a diamond rotating forming roll. The dressing program includes dressing compensation

LINEAR ENCODER

BASEMENT
Vibrations reducing, and torsions resistant machine base manufactured from normalized cast iron

HYDROSTATIC GUIDES
X axis moves on wide prismatic hydrostatic guide way. The grinding wheel movement on Z axis is made by synchronous servomotors and rack without clearance. X axes movement is made by ball screws and preloaded nut.

HEADSTOCK AND TAILSTOCK
Spindle rotation is controlled by an angular encoder and the perfect synchronisation for the orbital movement is guaranteed by a gear system without clearance.
The workheads can move automatically and manually on the base by air cushion and gear and rack.