Topics

11

General Mach Discussion / Servio motor Delta adas b2 Software and electronic gear ratio

« on: March 02, 2018, 12:16:11 PM »

Hi there

what is exactly the meaning of electronic gear ratio in Delta asda b2 Servo Driver?

and how to calculate it?

regards
jhonansaro

12

General Mach Discussion / issues with Machine stalls

« on: May 27, 2017, 01:55:04 PM »

Hi there
I have put together a MDF / Wood Cutting CNC Machine. But I have some problem with it, which is really bugging me for the last week or so.
Problem that I have is during a simple 2D Profiling Cut, After few Minutes my machine stalls on me, and as you know I keep missing some line of codes, and machine starts to cut Profile wronglyyyyy.        (Should Mention I am using ArtCam in order To generate G codes, and the Profiling I was doing Had a Total of 6mm depth, which I was trying to cut with 2 mm Step down Only.
I cannot figure out what is or are the cause of this problem. 
My machine is made of the followings:
•   Two  4.5 N.m (637 OZ-In) NEMA 34 Step Motor for my Y Axis. (To be Exact the  Leadshine Model No.  86HS45 Step Motor)
•   One Of The same Motor for X and another for Z Axis.
•   Y and X axis are rack and pinion with a 13 Pitch Pinion each @ 7 mm apart.
•   The drivers are also LeadShine M880A
•   My Board is the Typical Chinese made.  The so called 5 axis Board.
•   Spindle is a 3 Hp Single phase which I run it using a single to three Phase LS Inverter.
•   The Structure is a Light 4”*4” (10 cm * 10 cm) Square Tube
•   The Dimension of the Table is 2m*4m, So it is sort of Big but not so heavy since the thickness of Tube is only 2 or 3 mm.
•   The Controller is Mach3 Version R3.041

I wonder what could be the problem, and what is it that I can do in order to fix the problem.
Should I
1.   Increase the size and Power of my Motors? Or
2.   Increase  The Power of My Spindle or
3.   Is it an Electro Magnetic Noise From my Drivers or my Bob …, and if it is How can I fix it?
4.   Also about the spindles, What is more Powerful?  Running with my Highest RPM which is 18000 or running with lower RPM?
5.   Should I use some kind of Gear Box or pulley System? Which one is better or less expensive or most importantly requires Overall  less Design Change
Any Recommendation is highly appreciated.
Regards
JohnAnsaro

13

General Mach Discussion / How to select the right micro step resolution

« on: May 03, 2017, 05:07:30 PM »

Hi there

I need help on selecting the right micro step settings for my machine.
Any recommendation is highly appreciated.

I have two different Pinion gear for my steeper motor, which I place directly on my Stepper motor, and then on my rack. (I need to select the best option from these two pinion)
  a pinion with 13 pitch each at 7 mm  13*7 =91 mm
  a pinion with 22 pitch each at 7 mm  22*7 =154 mm
I also have a 4.5 N.M  (637 OZ-In) 2 Phase NEMA Steeper Motor ( LeadShine)
I also have a M880A (LeadShine) Driver

What would be the best Micro step Resolution Selection for me.

all I require is a smooth motion, with max speed of about 5000 mm/min, and off course the highest possible torque.


Regards
jhonansaro

14

General Mach Discussion / steppers are acting strange

« on: May 03, 2017, 01:05:35 PM »

Hi there
 I have two steppers for my Y axis, and it was working almost Ok, I had only occasional stalls.
I decided to change my gear on the steppers, so I replaced the 13 pitch or tooth Gear(pinion), with a 22 Pitch or tooth.

I am using 1600 per revolution for my resolution, and 22 tooth * by the 7 mm .    22*7=154 mm, Then I divide the 1600/154= 10.38
 I entered this  value for the step per unit. I get almost no movement, I tried the value of 90, with a very low speed of about 2000 mm and acceleration of 50. I get my best result, and it moves much much faster than 2000 mm/min. and it stops after few seconds of me relaxing the up or down arrow.
I should mention that for few hours, I tried all different kind of scenarios, But with out any real success, I just could not figure out its behavior.

Does any one have any explanation or recommendation for me?

Could it be that I have a lose connected wire? How can I check for my wiring? needless to say That all my wires are in E chain.

What is the best way to find out the best speed and acceleration for my machine? Knowing that motor tuning is not working properly For me at the time.

Also whenever it stalls it spears that the motor is not sitting properly on the Rack, It looks kind of lose. But when it is moving it appears that it is Ok. Is this a Normal behavior?

Regards
Jhonansaro

15

General Mach Discussion / Speed control of spindle through my bob

« on: April 28, 2017, 04:26:31 AM »

Hi There
First of I would like to Congratulate the Mach3 people for their most wonderful software also thank this forum, for giving me the opportunity of placing my question here.
I need help on the issue of controlling the speed of my Spindle through my Bob.
I am putting together a wood cutting 3 axis CNC Machine.
I am using a typical so called 5 axis Popular Chinese Bob of which, I am attaching a supporting Docs.
Also I am using a 3 Hp., LS Inverter,  Plus a Single phase 3 Hp Spindle of which I am also attaching the supporting docs.
Also I am using Mach3 Version R3.041.
Finally a 24 VDC 20 amp Power supply.
I managed to run My step Motors, Emergency Switches and limit switches …, and all is fine, I can also stop and Run my spindle through the Bob.
But I just cannot control the speed of it. Any recommendation is greatly appreciated.
I think I am doing something wrong in my Mach3 Settings, because the Inverter and bob Connection is very straight forward, and I am attaching the V1 from spindle to the 0-10 Volt of my Bob, and com to Gnd of the Bob(Top Row Terminal Of my Inverter, from the picture), similar to my stop and run(Bottom Row Terminal Of my Inverter).
Regards
johnansaro