Gallery, Projects and General > Project Logs
Oh Blimey I bought a CNC Lathe !!!!
awemawson:
Still chasing my tail with the relay wiring on this machine - it just doesn't anything like conform to the wiring diagram that I have in the ESTOP chain and various complex safety circuits. I have discovered that there is a diagram dated '06/93' in existence (my machine delivered 07/93) whereas my drawing dates from 03/93 so perhaps they made some significant changes in that period. Next issue is persuading my contact to part with the drawing, which is proving a tough nut to crack at the moment :(
>> Later edit: OK it's a public holiday in Germany - maybe that's why no replies !!! << :doh:
However, if you recall the controversy regarding using the 10 slot controller rather than the six due to suspected addressing conflicts I think I have nailed it. The attached memory map for both controllers fell into my lap yesterday - sure enough there are differences, but A/ the I/o cards fall in the same range, and b/ where that pesky MC465 BRAM sits in the map is covered by a 1 Mbyte MC472 which came with the 10 slot controller. The net result is that the CPU 'sees' memory and input output devices at all the addresses it expects so I 'think' I can eliminate this from the list of suspects generating the various error messages I have.
awemawson:
Still no circuit forthcoming from Germany, so I thought I'd try and track down some of the sensors that allegedly are reporting error conditions - this involved a bit of dismantling so I took a few pictures.
Main spindle drive is reporting an over temperature alarm - it has a sensor within it, so I dug down into the casing and got the wiring cover off the 18kW spindle servo motor:
.... needless to say the sensor says all's OK !
awemawson:
To give you an idea of the size of this servo motor, here it is with a 24" ruler laying on top:
awemawson:
It is belt driven, has a brake disk attached, and also a hydraulic clamping / un-clamping mechanism :
awemawson:
This is the 2 HP servo motor for the Z drive ball screw:
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