| Processing range | Rod diameter | ∅4mm～∅12mm |
| Head diameter | ∅20mm～∅55mm | |
| Full length | 60mm～220mm | |
|
Machining accuracy | Head diametr runout | ＜0.05mm |
| Head diameter diameter | ±0.03mm | |
| Seat metric gauge tolerance | ±0.03mm | |
| Roughness of Radius | Rz＜1.0 | |
| Processing efficiency | Including loading and unloadng | ＜9S/pcs |
| Abrasive materials | Electroplated CBN grinding wheel | |
Main configuration of machine
▶German Heinz Fiege electric spindle is adopted for the grinding wheel spindle, with Italian Balance online dynamic balance built in. A mechanical spindle is adopted for the collet spindle, which is driven by a servo motor. The linear speed of CBN grinding wheel is 150 m/s;
▶The valve head is clamped by cored fixture, stem auxiliary support. Quickly feed the grinding wheel to completely grinding the whole valve head .
▶Siemens CNC system is adopted for the operation of the machine, which can adjust the parameters, feed speed, read the shift output, cycle processing time and alarm information readed through the screen.