| NOZZLE BODY INTERNAL GRINDING | ||
| 2 station Twinner machine (2 grinding units on one machine base) | halving of cycle time with proportionally low investment | |
| integrated dimensional check station on 4 levels for shape and diameter correction | directed parallelism < 1µm | |
| adaptive grinding = oscillation evaluation for spark out time reduction | cycle time modification or optimization approx. 3 sec. | |
| envelope curve monitoring for recognition of tool breakage | waste elimination due to irregularities | |
| INJECTOR VALVE COMPONENTS | ||
| roller assembly | total length 100mm +/-0.02 cmk 1.67 | |
| hydrostatic axes | concentricity to the receptacle diameters 0.02mm cmk 1.67 | |
| external grinding wheel with CBN | diameter -0.005mm cmk 1.67 | |
| rotating dressing | area shape on the planar side (radius) 0.004mm cmk 1.67 | |
| cycle time incl. automatic loading + dressing: 8 sec. | ||
| VALVE BODY | ||
| insert 250,000 1/min frequency spindle to 1mm bore grinding | coaxiality, seat to bore < 0.7µm | |
| planar finishing spindle for preventing further clamping | plane surface Ra < 0.05µm | |
| dimensional check station for longitudinal and diameter verification | plane flatness < 2 μm | |
| axial chuck with radial centering compensation for clamping non-concentric bores | right angularity < 2µm | |
Post time: Jun-04-2019