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Topics - Bush Flyer

Pages: 1
1
FAQs / CV-Mode Auto Change?
« on: May 29, 2015, 11:03:02 AM »
I'm trying to set up CV control, the Stop CV on angles > 89 degrees it would go to Exact stop but angles less than 89 degrees it would keep the constant velocity. When I go to the  General Configuration screen I Tick the Stop CV on angles > and then try change the degrees from 0 to 89, but it will not change, I can highlight  the 0 in the box but cannot change it. Or have I been reading this all wrong and you have to manually change the Constant velocity to Exact stop when I want to cut 90 degree corners?
If this will not work and I'm way wrong is there a way to enable the CV mode button on the screen, that way I could cut two tool paths, one for right angles and then one with Constant velocity instead of having to go into General Configuration and change it. I find if I leave it on Exact stop it extends the cutting time.

2
My Router has died and I need advise please.

The time has come to replace my black & Decker router with another router or a spindle air cooled or water cooled. For me it is a bit of a mine field on what to pick now I have a budget of not over £200 and I would prefer if it was less.
I manly cut up to 6mm ply and balsa but I do have one job to cut out some brackets from 6mm aluminium, 
now I know that a spindle is a lot quieter but what size, the router I had was 600 watt will a 600 watt spindle do the same job. Would I be better going for water cooling and spending a bit more or will air cooling be just as good and what about VDF for control, there is a 1.5kw spindle air cooled with a 1.5KW VDF inverter for under £200 just add mounting. Or would I be better going for a 600Watt air cooled spindle with a power supply for Mach3 with mounting for under £150.

What would be the easiest way and best way considering my budget?  Or should I just stick with the noise of a Router? ???

3
FAQs / Zero tool height.
« on: December 26, 2013, 09:15:07 AM »
I'm having real trouble with setting the zero tool height.
I have followed a few threads here on machsupport forum and on you tube but still cannot get it to work correct can someone please help.
This is what I have first my breakout board is a HG07 and is wired as instructed with a 250 resistor, with the probe as port 1 pin 12 the E-Stop is on port 1 pin 15, this is as the instruction that came with the board and I have checked this with other instalment instruction that came with my stepper motor drivers.

My Mach 3 setup is in metric ( MM.)
The Machine touch plate is brass which is 0.80mm thick.

I first press enable button script next I press the Auto tool zero, this opens a Hidden script editor  window I paste this to the box.

Z zeroing macro by Scott Worden - Timber Lake Creations (and a little "Probe Var" tip from Brian ;-).

CurrentFeed = GetOemDRO(818) 'Get the current feedrate.
PlateThickness = GetUserDRO(1151) 'You could put your z-plate thickness here instead
ProbeFeed = GetUserDRO(1152) 'You could put a probing feedrate here instead.

Code "G90 F" &ProbeFeed

If GetOemLed (825)=0 Then
Code "G4 P5" 'Time to get to the z-plate
Code "G31Z-5 F" &ProbeFeed
While IsMoving()
Wend
Code "G4 P0.25"
ZProbePos = GetVar(2002)
Code "G0 Z" &ZProbePos
While IsMoving ()
Wend
Call SetDro (2, PlateThickness)
Code "G4 P0.5" 'Pause for Dro to update.
Code "G0 Z2.0" 'Change the Z retract height here
Code "(Z axis is now zeroed)"
Code "F" &CurrentFeed
Else
Code "(Z-Plate is grounded, check connection and try again)"
Exit Sub
End If

I save script when the box closes.
when I try to run the auto tool zero I get error no feed speed. and the Z axis vibrates up and down very quick.

I changed the
PlateThickness = GetUserDRO(1151) 'You could put your z-plate thickness here instead
to this PlateThickness = GetUserDRO(0.80) 'You could put your z-plate thickness here instead
and changed the
ProbeFeed = GetUserDRO(1152) 'You could put a probing feedrate here instead.
to this ProbeFeed = GetUserDRO(20) 'You could put a probing feedrate here instead.

Can someone tell me what I'm doing wrong. as This is a large learning curve for me, and I would like to understand it.
also could you please adjust the script to the correct values ie. Plate thickness and speed in metric.


4
General Mach Discussion / Soft Limits Help
« on: September 22, 2013, 10:52:11 AM »
Soft limit switch
First time on this Forum and it wont be my last, What I have been reading has been a lot of help, But now I am stuck.
I need help in setting up my soft limits This is my first CNC router That I have built it has a cutting table size of 850mm X 500mm it also has limit switch's on all axis.
The computer is an old windows XP that I got from a friend that hadn't been used since 2005.  
When I start Mach 3 and get it to run a G code, all is well and it will home  when asked. Then I will jog the X Y and Z to a new position that will be fine also,  Now when I press the soft limit button and I jog back to the end of the table near the home position it will crash into the ends bending the limit switch. I do a manual check  and find the limit switches are not working, I can move the axis away from the end and press the limit switch with my finger and none of the limit switches are working, when I switch off the soft limit and reset Mach 3 the limit switches are back working.
I have set the size on the Motor home / soft limit  to 5mm smaller that the cutting area hoping that it would not bang into the stops, but I have already had to replace three switches as it hit them hard.
What am I doing wrong? I have attached a picture of the setting I have on the Motor home / soft limit screen.
Or could it be the computer does not have enough RAM to keep up with Mach 3 program.

Mike.

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