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Author Topic: machine percision  (Read 3485 times)

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Re: machine percision
« Reply #10 on: February 04, 2015, 09:33:10 PM »
I went overthe hole machine to make sure everything is tight checked backlash. Had no backlash on x and .002 on y.  Reset steps and motor tuning  Checked steps on y to 11 inches and was exact on dial indicator. ran a 5 inch circle cut y cut to 5.034 and x cut to 5.014.  cut a 3 inch square y cut to 3.004 and x cut to 3.023.  Can the program be off im useing mill wizard.  

Also when the program end i move the gantry out of the way a few inches then hit go to zero and its not in the same place.  My machine is chinese should i get new drivers if so what should i get.  Im getteing shielded wire and im going to redo all my cables
Re: machine percision
« Reply #11 on: February 05, 2015, 05:39:35 PM »
does anyone else have a problem with the mill wizard gcode . Just trying to figure out why stuff is not coming out right

Offline RICH

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Re: machine percision
« Reply #12 on: February 05, 2015, 10:03:11 PM »
Quote
then hit go to zero and its not in the same place

Not sure what you mean by not in the same place.
Off a little or a lot?
Go To Zero - axis will move to the current offset if there is one........

RICH
Re: machine percision
« Reply #13 on: February 06, 2015, 11:15:34 AM »
When i set a piece to cut,i bring the router over to the center and zero the dro.  When the program is finished i move the router out of the way put a new piece of material in and hi go to zero. The dro goes to zero but the routers off between .030 and .070 most times not all the time

Offline RICH

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Re: machine percision
« Reply #14 on: February 06, 2015, 07:07:18 PM »
If your steps per unit are correct, backlash is set correctly, the axis mechancs are of reasonable quality and your velocity / accel
vlaues are proper for you machine, then I would guess that you should  do better than what you are seeing.

What more can I say................

RICH

Offline BR549

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Re: machine percision
« Reply #15 on: February 06, 2015, 09:29:28 PM »
Try reducing the X & Y axis's  Velocity and acceleration settings by 50% then retest. It sounds a lot like lost steps.

(;-) TP
Re: machine percision
« Reply #16 on: February 07, 2015, 07:18:04 PM »
I will try the motor tuning again. I have the chinese controler and would like to up grade to equipment that will work best for me. I just dont know what to get. Do you guys have any suggestions on what i should get. What drivers and motors and mother board thing do you recomend.
Re: machine percision
« Reply #17 on: February 09, 2015, 04:09:38 PM »
I ordered a g540 and a new power supply and new stepper motors and cables.  Hopefully this will make me more accurate