Hyundai Hit30s - Siemens 840C
G'day All,
Got a problem with a Hyundai Hit30s Lathe with a Siemens 840C control.
The machine had not been used for a while and when it was turned on again a week or so back, the memory backup battery was flat.
The tech guy apparently did a re-install of data from the machines own backup which got it up and running again but now it has an issue with thread cutting.
For some reason it seems to advance the pitch about 0.5mm each pass when thread cutting so instead of a single pitch thread you end up with a multi-pitch tapered looking thread.
Also, each time an M19 is cycled or the spindle orient button is pressed, the spindle orientate to a different position.
Anyone got any ideas?
Thanks.
Regards,
Dave.
Boulder Creek Tramway: www.smex.net.au/bouldercreek