Upgrade? Chinese CNC Machine

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Originally Posted by Swarfing

Are we actually sure these are metric screws? did they kick you a machine built for our American cousins and give you one with imperial screws?

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No idea, it came with a 220v PSU not that that means diddly squat - so if I tear it down to the point I can reach the screws how do you do measurements, the same as measuring the pitch on a normal screw?

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Originally Posted by Ricardoco

Ok divide 200 ~ (the 'steps-per' that is set on the axis in motor tuning) by the cut measurement minus the cutter measurement(Dia 3mm as the software is running in metric mode 0r 1/8" if you require brain drain ), and then multiply by the measurement you told it to cut which was 100mm..

Rick

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I get 1500.68 :hororr: methinks I did summut wrong

Carl measure the pitch of the leadscrews

Quote:

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Originally Posted by Carlb1058

I get 1500.68 :hororr: methinks I did summut wrong

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Ok

200/ (52-3) x 100
or
200 / 49 x 100 = 408.16

where 200 is the original steps per and 49 is the output cut measurement minus the tool diameter, multiplied but the input cut measurement..


is that a Bit easier?

Its a brain doo'er i know

LOL

Rick

Quote:

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Originally Posted by Swarfing

Carl measure the pitch of the leadscrews

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why not just follow 1 path at a time then the chap wont get too confused..

Rick

Agreed......

Quote:

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Originally Posted by Ricardoco

why not just follow 1 path at a time then the chap wont get too confused..

Rick

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Just turned it over and measured the Y and I get 3 to a cm - whatever that works out to *shrug*

Quote:

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Originally Posted by Carlb1058

Just turned it over and measured the Y and I get 3 to a cm - whatever that works out to *shrug*

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3 turns to a cm yes? What ever they are i suspect the pitch is not the same for x and y

Rick

Quote:

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Originally Posted by Ricardoco

Ok

200/ (52-3) x 100
or
200 / 49 x 100 = 408.16

where 200 is the original steps per and 49 is the output cut measurement minus the tool diameter, multiplied but the input cut measurement..


is that a Bit easier?

Its a brain doo'er i know

LOL

Rick

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Just a tad - cheers :) I ended up with 409.62 using 3.175 as the tool diameter

Quote:

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Originally Posted by Ricardoco

3 turns to a cm yes? What ever they are i suspect the pitch is not the same for x and y

Rick

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Yep 3 to a cm the biggest problem with trying to measure the X is it is fully enclosed and I'd pretty much have to tear it apart to get to it but I shall attempt to get a close as damn first :)