It doesnt matter where you draw it in CAD you just put it in the same place in Mach3Quote:
Originally Posted by blackburn mark
Phil
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It doesnt matter where you draw it in CAD you just put it in the same place in Mach3Quote:
Originally Posted by blackburn mark
Phil
not sure if we have our wires crossed phil ?Quote:
It doesnt matter where you draw it in CAD you just put it in the same place in Mach3
in CAM not "CAD" you dictate atributes of the tool path, if your tool path starts in the center of a block you need to do a bit of maths phyisicaly place the tool in the center of the block to start
if your starting from a corner you only have to zero in on that corner set your hight and the gcode will jog to the centre and start cutting
cheers guys.
motor tuning is doing my headin :confused::confused::confused:
i want my motor to turn 1 rev and when it does, i want it to show 5mm in mach.
my motor is 200 steps 1/8 any help pleazzzzzzzzzzzzzzzzz
steps per = 320 errrrrm.... hang on, what micro step setting are you using on the board ?
its ages since i did mine, if your using 1/16 micro step and your screws are 5mm pitch then you have 1600 steps per revolution of your stepper that adds up to 5mm
devide your seps my 5mm to get your 320 steps per unit (1mm)
i think :)
steps per mm = motor steps*microstep/screw pitch
For instance, 200 step motor, 5mm pitch screw and you say 8th stepping:
200*8/5=320 step/mm
i tryed putting in 1600 steps, put 5mm into mack and the motor span 2.5 revs ish.
when i use these settings and put 5mm in i get 1 rev this is why it's doing my headin :rofl:
what am i doing wrong.
Attachment 3613
Chris
The formula is 200 X (Micro Steps ?) = steps per rev
The amount the screw turns 1 rev (5mm i think in your case)
In my machines i use 10 microsteps so the formula is 200 x 10 = 2000 / 5 = 400 steps per rev
The velocity in the Mach setup tab is the fastest you are allowing the machine to run in your case you have set it to 600mm per minute which is on the slow side
So if you divulge you micro step setting your figures can be confirmed but 640 (Your Setting) steps per equates to 16 microsteps and the generally accepted maximum is 10
Phil
how did i set it to 16 microsteps? is that the 1/16 setting on the board, and i need to change it to 1/8?
i have set the dips to the 1/8 setting at the mo.
this is from the post on these boards
"The 1/8 step was reversed with 1/16, a fairly minor problem but still irritating as I had a scaling error on movement until I figured it out."
by the way a BIG thanks to all that have helped me so far.
Well if you have it set to 1/8 then steps per rev = 320
Phil
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well it turns out it was the board!!!!! i bought a board with 4 axis 3A that turned up today, pluged it in sorted it out and all work as it shoud.
the 3 axis board the y axis just stopped working so am on with getting it replaced.
Oops double post.
Hmm, nobody noticed my post #86...
I think you meant steps per mm there. Little misleading - implies that 200*10 = 400 but maybe that's just me being pedantic.Quote:
Originally Posted by M250cnc
What was wrong with the board? Missing lots of steps?
"What was wrong with the board? Missing lots of steps?"
dont know mate just was not playing the game, when i set 320 steps it just span like 12 revs and was set to 1/8 on the board.
well thanks to you guys i got the z axis up and running :smile::smile::smile::smile::smile::smile:
the last cut on my motor boss and a look at my workshop
http://www.youtube.com/watch?v=0VV7D8341e0
i have drilled thousands of holes, but my first cnc drilled hole was amazing.
you guys that have got it all sorted must orgasm every time you start a job :rofl:
http://www.youtube.com/watch?v=E5ykZbYe0VE
when the motor is not moving is it supposed to make a noise?
if not why is mine and how do i stop it!!
Good to see you've got it working :) I did the same video/test as you did...Quote:
Originally Posted by h4ppy-chris
http://www.youtube.com/watch?v=Am1rM...eature=related
That was a long time ago now!
If I recall correctly my motors make a highish pitched noise when stationary - quiet though.
so it's normal and doing no damage ?
I think it's fine but I may be wrong! Not a loud noise?Quote:
Originally Posted by h4ppy-chris
The steppers will make nice noises when they're moving.
its a high pitched sound that changes when you jog it on, at certain ponts it stops!
when i came to take the x axis of it gets this far (see pic) and stops.
is there some thing i need to remove?
Attachment 3624
That looks about as far as my milling machine will go. That's probably your maximum travel?Quote:
Originally Posted by h4ppy-chris
Unless there's something in that T slot on the front of the bed getting in the way...I had that happen.
Oh wait. I might have misunderstood you. Are you trying to get the bed off completely? If so I'm not sure, mine just came off when I removed all the relevant bolts. I was going to scrape it...
yeh just want to take it off but can't see whats stopping it.
remove the gib strip so you can lift the table a bit and slide it over the X axis nut.
thanks mate :)
only got the z axis working at the min but it helps a lot
http://www.youtube.com/watch?v=jOOyh1NwK-8
and then there is this lol
http://www.youtube.com/watch?v=JYDfu457Kzo
YEEEEEHAAAAAWWW!!!!!!
yes it does beat holding the motor chris but you had two hands free, you could have held on to the Y stepper and had some of that 3 axis Action :)
steady cowboy 1 step at a time lol
useing Z & X to make the X axis motor mounting plate :naughty: its a fantastic buzz watching my mill slowly come to life :smile:
http://www.youtube.com/watch?v=JTXBDvV-U3c
Nice - almost there!
Have you got a photo of the motor mount?
Did you use backlash compensation in that video?
I must have seen a different video as i couldn't really see that much detail. :confused:Quote:
Originally Posted by Jonathan
This is not a criticism of Chris's video btw.
Phil
i will put a photo up when it's finished mate.Quote:
Originally Posted by Jonathan
yeh i used backlash compensation in that video how did you see that lol
no problem Phil vids are just using my mobile phone so not very good.
here you go jonathan X motor mounted fited and working :smile: no more G clamps :heehee:
now on to the Y axis :naughty:
Attachment 3662
well am buzzing my tits off :smile::smile::smile:
got the X axis made and tuned for now :naughty:
so thought why not G clamp the Y motor down and make the Y axis motor mount plates :naughty:
thanks guys for all your input and encouragement keep it coming.
http://www.youtube.com/watch?v=f9z5oMcTq6k
http://www.youtube.com/watch?v=DY_poeUbdDA
chip flaps ! well posh :smile:
your almost there man
cutting circles !!! ooohhhh the power:smile::smile::smile:
Hi Chris,
Good work on the machine, the videos are getting better also.
I hope the next thing you are gonna fit is guards for the belts especially the Y axis. You may end up having a nasty accident with your gentleman sausage. :redface::redface::redface:
Phil
Hi Chris,
Interesting stuff, keep it up. A good example of CNC bootstrapping there, using the machine to make parts for itself before it is finished.
thanks guys for your kind words, now got the Y axis fitted and working. will post pics and vids tomorrow.
here's the vids now i need to do some tidying up :whistling: happy watching :smile:
http://www.youtube.com/watch?v=WPPmTw-yb7c
http://www.youtube.com/watch?v=sKKUU1JsGRU
http://www.youtube.com/watch?v=5bczu5WqZDU
http://www.youtube.com/watch?v=1L6IqJD3eto