| The Craftmans Shop > New from Old |
| The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20) |
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| PekkaNF:
That pocket shape is interesting...If I needed to quess possible logic behind that shape: * Round hole with loose fit shank would give a line contact, while that pin on the front or other feature indexes it and prevents it from turning there would be tendency to "rock" about that single line contact. * On the other hand V-groove would give a two line contacts for a round counterpart----maybe this round pockect odd relief woud serve the same function in economical execution. Never seen this construction, but if that serves other purpose I keep mine in mind...least I think it might come handy :) Pekka |
| awemawson:
I've just spent a couple of very frustrating days bottoming out a fault on the lathe. Symptoms: Turret clamp solenoid not clamped. It EVENTUALLY turns out to be a simple bad connection on a Sub D 37 way connector used on the input array, this pin takes the 'clamp request' from the SMCC subsystem conveying it to the controller that should then act on it, clamping the turret. Along the way I've had to replace the vastly expensive Euchner 'unclamped' switch as it couldn't reliably be set - this thing works on 10 thou movement to switch!) - fortunately I'd had issues with it before and had bought a 'pre-emptive spare'. And I've discovered that certain cables are incorrectly marked differently at each end, with wires for 'clamp' and 'unclamp' being interchanged in a couple of places, but 'end to end' the errors compensate and it works in the correct sense ! So the thing that the fault is on is a Klippon 068386 terminal block. It probably only has a dry joint on it's pcb but although I'd hoped to solder the pin in situ - it's all enclosed. Only ebay one is in the US and although reasonably priced the postage is ridiculous. I've wiggled the connector into a working position, and the machine is running as I type this, but of course it needs fixing. If I can't source a spare I'll pull this one apart - bit of a pain as it has about 40 cables screwed into it ! |
| redshift:
Will this sort your problem Regards, Dave |
| awemawson:
Dave, thanks so much but I've just found one in Holland :thumbup: |
| redshift:
No problem |
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