Messages

1

General Mach Discussion / Re: problem settings -need help

« on: February 04, 2013, 09:23:56 AM »

Brett,
yes, the ballscrew pitch  is 5mm per rev.i checked the driver manual and there is a 10 microsteping setting . so i will have 200*10(microsteping)/5(pitch)=400 steps/1mm
with taht way everything is rounded to 0.01 mm

the problem with the max speed is not fixed. the slow jog setting is set to 100% so if i press the shift or not doesnt matter. i am still limited to 72 units /min max speed.
i do not know what am i missing.
also noted that i cannot jog simultaneusly x and y or z axis. is that normal?is there any setting for jogging both axis the same time?


question about diagnose screen. can i simulate a limit switch signal by pressing a key? there is a simulation button in that diagnose screen but does not seems to do annything..


thanks!

2

General Mach Discussion / problem settings -need help

« on: February 04, 2013, 06:01:53 AM »

hi,
i am new to mach and i am trying to setup a mill system.i have smooth stepper and pmdx 126 board.
i need help for basic settup. here is my thoughts:
i have steppers with 200 steps/rev
i set microstepping to 16 so i will have total 200*16=3200 steps per rev OK?
the ballscrew pitch is 5mm per rev so should i input 3200/5=640 steps per unit at the motors setup?

1)what microstepping should i use for a mill bf20 machine (g0604 equivalent)

i have problems with the jog stepping too. for example if i set the jog step to 0.01 i do not see 0.01 steps at the dro when i jog i see 0.0104 -> 0. 0208 -> 0.0299 ...
2) what is going on?units are in mm

3)i set the max speed at the 600 at the motor setup screen . why my max speed is at 72units/min at the feed screen ?

4)limits :
is the mach3 moves  all the axis simultaneusly when homming or is it homes one axis at a time? i  am trying to find out how many limit switches i need. yes the x-- and home x , y-- and home y, z++ and home z  share the same switch so finaly i will need 3+3=6 switches?
i what inputs? input pins are the 10-13 and 15. the 10 is reserved for estop.
11 > x-- and home x
12 > y-- and home y
13 > z++ and home z

is it ok if i use the inputs for the seccond port of the SS for the x++,y++ and z-- ?

thanks
i apreciate any help

3

SmoothStepper USB / Re: new cnc build and smooth stepper questions

« on: January 01, 2013, 05:39:00 PM »

Is there any lag when ess executes mach commands?
I mean that if i move an axis presing the keys on keybord for example?(that is a mach command, isnt it?)
Or when i will  operate a probe?
The same question please with the pokeys and any pendands?
(The pendands connected straight to the bob or to the pc) ?
I heard many strange things over the internet thats why i decide to ask the source of mach3.
Thanks again Hood!

4

SmoothStepper USB / Re: new cnc build and smooth stepper questions

« on: January 01, 2013, 04:28:43 PM »

Why do you prefer the ethernet type?
Is this choise have anything to do with the instalation and how easy it is to make it work with mach3?
Do both type have the same mach setup?
The usb i think it is faster than a typical 100kbps ethernet.isnt the transfer through ethernet more sensitive  to faults?
Witch one of the pmdx?their site lists the  126 under bobs.is that what you mean?

5

SmoothStepper USB / Re: new cnc build and smooth stepper questions

« on: January 01, 2013, 01:16:28 PM »

Ok.
I do not know what board should i combine with the ss. So the next step is to combine a bob, right?
1.do i need a bob with  optoisolated signals feature?
2.should i choose bob with tbe ss conectivity features like c25,c23,c32 or any bob i want? C10,c11

Can you please suggest where to look and what should i give special attention?or maybe a combination?
I am not familiar with equipment like these.and do not know what to start from.i
Thank you guys for your support.
Jeff ,are you selling those devices?any link?

6

SmoothStepper USB / new cnc build and smooth stepper questions

« on: January 01, 2013, 10:50:02 AM »

Hi guys,
i have a bf20 mill machine and want to convert to cnc.
I need your help to solve some issues i have. I will use ballscrews but i think also backlash compensation will be needed in mach3.
1) So, is mach3 backlash comp. Working with smoothsteper?
2) is charge pump working with smooth steper?i am thinking the usb ss board with the ss c25 terminal board.so will i have charge pump working?
3) the ss usb board emulates two parallel ports.(if i understand corectly) that means i can use  a simple bob like c10 or c11? Or maybe two bobs?
4)you guys that used both technologies, usb and parallel, what is your suggestions?

Thank in advance for your help.