Hi All
Does anyone have a clue as to how the spindle can be made to stop rattling like mad, let me explain....
I have run a a part from Aluminium 2.5 inch diameter, worked perfectly.
Loaded up 56 mm Hexagon Brass, increased the pressure on the pressure knows behind the door as the chuck holds on the corners only. Run a few, but now there is a big ratling, sound from the spindle are, maybe the gearbox.
However we have checked the gearbox area, seems fine and has correct amount of oil. I don't think it could be a parameter accidently changed, as this is not going to change anything machanically.
Could it be that the chuck jaws are too close to the bar diameter, and do not have enough movement so the sensor is not picking up or something. Maybe the chuck unit itself is loose. Proximity switch gone bad, but this wouldn't explaing the rattling noises.
What happens now is that as you select gear (high / low) everything ok. But when you start the spindle, even manually at slowest speed, you can see the thing jumping and one would normally assume the gearbox. It sometimes spins for a while then just holts, this being in Automatic, manual it does stop, or doesn't even start spinning. (could this be a knackered door safety switch)
I have also noticed the chuck clamp light starts to flash after the chuck stops itself unexpectidily, also it is not on when the chuck is closed with the foot pedal. Only turns on when you flick the key on the machine, but as the machine is old, I have no books, so do not know what the key labelled chuck lock does. It doesn't seem to move anything. It is always supposed to be on??
Does anyone have a clue, please help.....