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Messages - happytriger2000

Pages: 1 2 3 »
1
SmoothStepper USB / Re: StepperSpeed control on A axis
« on: September 10, 2011, 06:36:42 PM »
Using 2 tack switches 1 for Slow Jog +, 1 for Slow Jog -, assign those sw to input e.g. 11 and 12 so when pressed the DRO value changes.



then


If I want to use a rotary Switch for + & - by turning cw or ccw, would I need to write a code for this?

http://en.wikipedia.org/wiki/Rotary_switch

2
General Mach Discussion / Re: controller board with encoder feedback?
« on: September 10, 2011, 06:52:44 AM »
what I have done since my last reply, I purchase a used traditional Gantry Mill, travel: x 1.2m, y: 2.8m, Z: within 1 m (will check), there are 3 AC motors with chain and gears to each axis, very large BACK -LASH!.

Currently there are 3 Fagor Linear encoder + 1 DRO came with machine, will have a Mach3 controller ready for this machine.

I'm looking for a solution to reduce back lash without replacing the leadscrew to a ballscrew, what  have in mind:

1: Use a stepper card with Linear encoder input form Mbot, need a longer magnetic strip for all 3 axis.

2: DC Motor attached to each axis, then use an encoder interface to read Fagor Linear encoder's signal and feedback to the Dc Motor.

any oter ideas?

thakns


3
SmoothStepper USB / Re: StepperSpeed control on A axis
« on: September 10, 2011, 04:35:25 AM »
Ok Ithink i found it, the OEM code for Slow jog % DRO = 3

http://www.machsupport.com/MachCustomizeWiki/index.php?title=OEM_DROs

4
SmoothStepper USB / Re: StepperSpeed control on A axis
« on: September 10, 2011, 04:32:36 AM »
Happy;
I would suggest a fob / jog dial or one of the pulse-generators wired into your stepper driver board. With steppers you energize 2 or more coils at once so just a regular resistor type speed control will only activate 1 coil limiting the power output of the stepper.
If your into electronics and programming look at the arduino.cc website and see how they wire up steppers to the arduino micro-controller. I have used the arduinos with nema 17 steppers with great success.
good luck
Doc



hi wyzarddoc,
                    I have a pulse generator, it has 4 wire : +5v, G, G, Pulse, I wired Pulse to SS port 3 1A, and one of the G to 1B, and apply 5V anf G from Ss to Pulse generator, this did not work. Probably the Pulse generator's Pulse signal is different to a rotary encoder signal output.
Solve the problem by assigning OEm code 111 & 112 to input 11 & 12 for slow jog up & down, so everything is done within mach no need to use external hardware to control speed, as we thougth by adding an pulse generator would be easier but I was wrong. Next task is to add an rotary switch to count up or down the Percentage of Slow Jog rate display, what is the OEM for the Slow jog Rate percentage display?

thanks,


5
SmoothStepper USB / StepperSpeed control on A axis
« on: September 07, 2011, 11:49:16 AM »
Hi,
    I would like to know if there's a way to speed control the A axis rotation by adding a variable resistor to the SS input?, I added an 4th axis to my 3 axis Milling machine, and the setup is all fine, just need an extra stepper speed control to increase or decrease speed on A axis when not using gcode, need some help on this one.

The A axis maximun RPM is 1500 labelled on the sticker.

thanks,


6
General Mach Discussion / Re: Plasma Z floating head
« on: January 14, 2011, 01:42:43 AM »
I'm using the Mach blue screen set, and on the right side of the screen there's a Z plate offset, I'm thinking of modifing the code of that Z plate offset.
When Z plate offset is pressed, the Z axis lower down and stop when switch is tripped, and from here I want to add some code so that it raise to 13.7mm then fire torch, woul'd anyone be kind enough to provide this code for me?

thx

7
General Mach Discussion / Re: Plasma Z floating head
« on: January 13, 2011, 11:31:19 PM »
rrc1962,
            I entered the code in M03, when I test run .nc file, when M03 is called I was asked to enter a  valid pierce geight, and where do I put this pierce height value?


8
General Mach Discussion / Re: Plasma Z floating head
« on: January 13, 2011, 11:09:39 PM »
Ok I think I know,

C:\Mach3\macros\Mach3Mill

9
General Mach Discussion / Re: Plasma Z floating head
« on: January 13, 2011, 11:01:41 PM »
rrc1962,
           Will try your code, I kind of forgot how to edit the M03 code, please guide me,

Thanks,


10
General Mach Discussion / Re: Plasma Z floating head
« on: January 12, 2011, 10:56:35 PM »
Thanks again BR549,
                             
I'm new to Sheetcam, still using a demo version downloaded yesterday.
I was wondering if it's possible to use Mach 3 to do the Z axsi floating offset without Sheetcam?.
Like the Mach blue screenset that has the Autotool zero feature, Link:http://www.cnczone.com/forums/cnc_wood_router_project_log/36099-another_aussie_auto_tool_zero.html,
instead of touching the plate,  Z home switch is tripped, reset Z DRO to zero, raise Z to Swtichoffset value so tip is setting on top of material, reset Z to zero as top of material, raise Z to pierce height, fire torch.

I haven't used a plasma machine before, only hand cut.


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