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problem xyza drive fast ?
« on: September 16, 2010, 06:23:48 PM »
my new machine motor drive fast and y axis  its not get enough power to move the y table it run fast and go to middle then it lossing setp and xzc as well if i touch it will sotp can anyone please tell me how to give more power to axis many thanks.

Offline Hood

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Re: problem xyza drive fast ?
« Reply #1 on: September 16, 2010, 07:55:31 PM »
Would need a bit more info but basically sounds like you need bigger motors or gear them to give more torque. Or it could be that your axis is binding and causing the motors to stall.
Hood
Re: problem xyza drive fast ?
« Reply #2 on: September 18, 2010, 02:26:10 PM »
hi, sorry for daley i just got home, i have to 2 driver board one of them it drive fast and make the machine stall ( 23 nema motor ) and the other driver board it go stronge yxza go fine but its too slow all go fine but too slow , hopfully it will help waiting help from  you or any  member many thanks

Offline Hood

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Re: problem xyza drive fast ?
« Reply #3 on: September 18, 2010, 03:18:25 PM »
Motor tuning controls the rapid speed(velocity) and also you need the correct steps per unit set there and also the Acceleration may cause problems if too high.
Hood
Re: problem xyza drive fast ?
« Reply #4 on: September 18, 2010, 03:53:47 PM »
i got  2000 step per/120 velocity/  4 Acceleration / 0   step pulse / 0 dir pulse  hope  it will help

Offline Hood

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Re: problem xyza drive fast ?
« Reply #5 on: September 18, 2010, 04:10:06 PM »
Not really as I dont have a clue about the machine.
What make stepper drives?
What supply voltage?
What stepping are the drives set to?
What pitch are ballscrews?
Any gearing between motor and ballscrews?

A pic of the machine would also be good as it could be anything from a micro mill to a 10 tonne giant.
Hood
Re: problem xyza drive fast ?
« Reply #6 on: September 18, 2010, 04:18:43 PM »
sorry i bought the machine from ebay ,this is  the link     http://cgi.ebay.co.uk/17-x-15-3D-cnc-router-engraving-machines-/160481522086?pt=UK_BOI_Building_Materials_Supplies_Carpentry_Woodwork_ET&hash=item255d71b1a6     ...... Linear bearings, can be adjusted to ensure the elimination of the gap,                 
  precision fit,     

  high-precision linear Round rails, diameter 0.8-inch,
     

  The use of high-precision new ball screw, 

there is no rebound in return;  diameter 16 mm; pitch 10 mm;   

  Aluminum alloy T-slot table,  Can help you cut and fixed,
  Manufacture than wood table has a huge advantage,

   NEMA23 stepper motor current is 3A, the weight 2.2 pounds ,Torque 1.7n.m 245 oz.In.

    30v 3A CNC drive,tb6560 , Optical isolation, the maximum 1 / 16 micro-step,Spindle control relay

     400w 30v Switching Power Supply

 spindle motor is  850w, 4 level speed, 5000--30000RPM, Strong power;

  milling tool diameter:  8mm,6mm,3.175mm

Router is the length of 28 inches, width
 thanks  for your  answer

Offline Hood

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Re: problem xyza drive fast ?
« Reply #7 on: September 19, 2010, 03:29:34 AM »
Ok I have a better idea of the machine now but still need a few answers.

Are you using metric or imperial as default units?
Do you know what the microstepping of the drives are set to?
Is there any gearing between the motors and the ballscrews or are they 1:1

Hood

Offline stirling

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Re: problem xyza drive fast ?
« Reply #8 on: September 19, 2010, 05:18:48 AM »
Found out a little that may help Hood. Seems there's a couple of versions of the tb6560 driver but anyway the plain vanilla one which I think this is has full, 1/2, 1/4 and 1/16th microstepping.
From the piccys on ebay I'm pretty sure the steppers are direct drive. (helical couplers mind - oops)
Certainly I'm thinking this makes kocher's 2000 steps per unlikely.

Ian
Re: problem xyza drive fast ?
« Reply #9 on: September 19, 2010, 05:29:39 AM »
hi, i do use metric MM  as default unit . and i use 4 Axis TB6560AHQ Stepper Motor Driver Controller sorry i dont know what you mean, micostepping of the driver are set to this link of my driver board if it will help ....   http://cgi.ebay.co.uk/NEW-4-Axis-TB6560-Stepper-Motor-Driver-Board-Controller-/250687554021?pt=UK_BOI_Industrial_Automation_Control_ET&hash=item3a5e2481e5     ..... and  the last  question  its no any gearing bettween motors and ballscrews . thank you again for  your help