Upgrade? Chinese CNC Machine

[Carlb1058]

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?

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?

[Carlb1058]

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

I get 1500.68 methinks I did summut wrong

[Swarfing]

Carl measure the pitch of the leadscrews

[Ricardoco]

I get 1500.68 methinks I did summut wrong

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

[Ricardoco]

Carl measure the pitch of the leadscrews

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

Rick

[Swarfing]

Agreed......

[Carlb1058]

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

Rick

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

[Ricardoco]

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

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

Rick

[Carlb1058]

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

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

[Carlb1058]

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

Rick

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 :)