help with Harrison CNC lathe

Andy St said:

I picked up a used Harrison Alpha 330T CNC / manual lathe recently. This machine is the Alpha only control not the dual control of the better models. I knew about this controls limitations but thought the condition, tooling, price, location and history outweighed any negatives. I have been searching for a machine of this type for some time.

The lathe has been disconnected from power for approximately 4 month's. I hooked it up temporarily to power last Friday to see if it would fire up and it did. At that time I left it powered up for a few hours but didn't do much else with it. I had some time this week and hooked it back up again to power (still don't have a permanent location). I made a few test cuts to familiarize myself with the manual mode. I have not tried to program it or run it in CNC mode yet.

I notice a few problems in manual mode that I would like some help with.

1 and most important

I do a cut and measure tool offset for the X say .6502. Then dial it in to .6402 and take the cut. When I measure it after the cut it reads .6302. It seems like it might be some radius / diameter setting?

2 Moving the chuck by hand (to position the chuck key or other) when not spinning produces a " ! "error and you have to shut the machine off and turn it all back on to reset?

3 Power meter bar graph is not working. Can this be switched off and on or is there a problem?

So far I have not fond any help in the manual but it is mostly about operating the lathe.

Seems like it will be a nice machine

Andy

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