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Problem With King KC 20-VS Mill

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snub:

--- Quote from: 75Plus on October 22, 2014, 10:04:19 PM --- I just wonder if you may have a metric lead screw in the "Y" axis and an inch scale on the hand wheel. This could explain the large difference.
--- End quote ---


I checked the threads per inch on the X axis and there are ten, as it should be. I then checked the threads on the Y axis, and there 13 threads per inch. So I set the handwheel at zero and switched the DRO to read millimeters.

1 rotation of the handwheel, table moves 2mm.
5 rotations and the table moves 10mm.
10 rotations and I get 20mm.

So, yes indeed, they put a metric screw on the Y axis.

I'm guessing that to correct this I will have to remove the table and the crosslide. Will I be able to access the "nut" by doing this, or is it accessed from underneath.

philf:
Snub,

Why worry about it?

If your DRO is working properly then use that.

On the other hand - if you bought the mill new then I would expect that the supplier has an obligation to put it right.

Phil.

75Plus:
Snub,

You would need both a new lead screw and the nut. King Canada should supply it at no charge. It is clearly a manufacturing error so they should pay you labor for replacing them. If you can't get it from them you could always get it from Grizzly.

Joe

pete3000:
If you know the error is down to the dial graduations not matching up with the nut/screw, surely the cheapest way to correct it if the maunfacturer can't is to make another graduated scale knob to match.

Should be cheaper and less involved than changing something which is working.

75Plus:

--- Quote from: pete3000 on October 25, 2014, 06:18:09 PM ---If you know the error is down to the dial graduations not matching up with the nut/screw, surely the cheapest way to correct it if the maunfacturer can't is to make another graduated scale knob to match.

Should be cheaper and less involved than changing something which is working.

--- End quote ---

Pete, the error was that the maker mixed two different systems in the machine. Trying to do any serious work with one axis set up for metric and another imperial would be a total nightmare. It is obvious that King Canada sold a defective machine and should correct the error.

Joe

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