Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Expertise in machine tool building<br />
Based on the milling of a typical component roughing time is usually<br />
calculated at > 70% (even for forged parts).<br />
It has quickly become apparent that an increase in productivity is<br />
directly related with the dissipation and removal of swarf away from<br />
the component. The ideal machine must be so designed and built<br />
that it can attain high volumes of swarf removal in actual/real cutting<br />
conditions.<br />
Spindle torque diagrams and cutting force 'data' only tell half the story.<br />
The most important element is to use a machine that enables deep<br />
and stable chatter-free cuts. A well designed and balanced concept<br />
(weakness-free) as well as high stiffness, low resonance and high<br />
dampening qualities are imperative.<br />
A prime example of high stiffness and high dampening is the use of<br />
a gear spindle instead of a motor spindle. Apart of the extreme<br />
robustness, a gear spindle has the advantage of high dampening<br />
properties when dealing with rotor bending moment forces.<br />
The spindle rotor stiffness is much higher due to the rugged spindle<br />
shaft and short distance from the spindle nose to the rear spindle bearings.<br />
Starrag<br />
Nodding head with two<br />
supports and a heavy<br />
duty gear spindle<br />
Spindle options :<br />
8000 rpm/ 940 Nm<br />
5600 rpm/ 1300 Nm<br />
Dörries Heckert Scharmann SIP Droop + Rein TTL Berthiez WMW Ecospeed<br />
5
Change language