Messages

1491

General Mach Discussion / Re: Maximum processing speed?

« on: February 10, 2015, 11:03:42 PM »

Several things happening here. The Z cannot move any faster than the Acceleration values will let it in. AND the XY cannot move any faster than the Z will let them.

To do 3d cnc well with Micro moves it takes a very light  fast excellerating machine to do it fast.  TOP speed means very little. It is ALL about how FAST you can excellerate .

When your machine runs I bet it gets nowhere near the Feedrate you have set.

Just a thought, (;-) TP

1492

General Mach Discussion / Re: Tool sensing with ATC

« on: February 10, 2015, 10:39:47 PM »

You can use a simple micro switch with a lever as well. They require very little pressure to work. Just brush it passed the switch lever  an see IF it trips or NOT.

If you need help, glad to help out.  A simple Mcode(macro) would do the job.    and between checking teh tool OR tool holder is just a matter a Z height using a single switch. Peace of Cake(;-)

NOW of course you will have to reference the machine on startup to the same spot. But you will need that for selecting tools anyway so that Mach3 knows where everything is located.

he code to see the switch is simple. You would have brought the switch wiring to a PIN then assigned it as an input.  Then as part of the tool changer code you park it at the Tool check spot then look at the inout to see IF it is active.

IF not IsActive(input5) then         'If the switch did not trip
      MsgBox("Tool Bit is Broken")   ' Popup message box
      DoButton(3)                         'Stop the program run to allow you to fix the problem         
else
Message" Good To Go "    ' Sends message to status line in Mach3 and continues Program.
End IF
End

If you need help with the Macro coding side just holler, Glad to help




(;-) TP

(;-)TP

1493

Newfangled Solutions Mach3 Wizards / Re: adding a ne button to my page

« on: February 10, 2015, 10:19:52 PM »

If you just want to see the H offset(;-), use OEMDRO(32)

(;-)TP

1494

Newfangled Solutions Mach3 Wizards / Re: adding a ne button to my page

« on: February 10, 2015, 10:14:11 PM »

The H is NOT an automatic function YOU have to apply  it in the Gcode to allow Mach3 to do the proper comp.

M6 T6 just does the swap as to which tool is active . That part is just a number swap The actual Comp is applied with G43 Hxx for height and G41/42 Dxx for radius.

(;-) TP

1495

General Mach Discussion / Re: Tool sensing with ATC

« on: February 10, 2015, 10:03:59 PM »

You would not want to use the G31(high speed skip) Because every time you passed a tool through it  the machine would stop. YOU want the opposite.

So you simply set up a tool slot gate with a very small optical beam  Then position the tool in the centerline of the beam so that it blocks the beam.

So when you are finished with a work segment and want to change tools you simply move the tool to the Tool Check  point and IF the beam is not blocked(tool Missing/broken) then STOP the machine and call for HELP(;-). IF the beam is blocked(tool OK) continue on the to the next tool change position. Pick up a tool and loop through the tool check position on the way back and check IF a tool is picked up.

You can do the same thing for a missing or present tool holder only position it to check the tool holder instead of the tool bit.

Build your gate to be able to check both with one gate. Make it wide enough to pass either through it.

Does your spindle have an output signal to verify the tool holder is present ??

(;-) TP

1496

Newfangled Solutions Mach3 Wizards / Re: adding a ne button to my page

« on: February 10, 2015, 05:39:10 PM »

I dont see where having an "H" dro does anything for you.  Can you explain how it would help you. There are only 2 things invloved the tool Radius(diameter) and length(height) both are covered by the tool table.  To invoke the length you use G43 H(tool#) +leadin move  and for Radius it is
G41/G42 D(tool#) + leadin move

Just a thought,

(;-)

1497

General Mach Discussion / Re: Advanced Acceleration and Shape Control

« on: February 10, 2015, 05:19:54 PM »

There are somethings in that article I disagree with.

as to your question SURE THERE IS. Properly engineer your machine in reguards to Accelleration . AND if you are running servos PROPERLY tune them for optimum accuracy AND acelleration.

Most hobby systems are not even close to being optimum on acelleration therefore they suffer performance and accuracy wise.

Second is requards to stiffness of design . The stiffer the better weak limpy sytems absorb motion energy therefore distort the true shape of what it being cut.

Just a thought, (;-) TP

1498

G-Code, CAD, and CAM discussions / Re: Demo G code stops when spindle running

« on: February 09, 2015, 09:29:11 PM »

You need to talk to TOM at dynomotion. IF it did the same thing runninh his software then it is a Dynomotion problem not a mach3 problem.

(;-) TP

1499

General Mach Discussion / Re: "run from here" problem

« on: February 08, 2015, 10:24:40 PM »

Looks liek they removed it from the Mach3 sit.

You can still find it here  http://www.candcnc.net/index.php/firmware-updates

(;-) TP

1500

G-Code, CAD, and CAM discussions / Re: Demo G code stops when spindle running

« on: February 08, 2015, 09:11:55 PM »

I would start the spindle with this It starts the spindle at a speed of 5000. THEN there is a 10 sec delay (if you have mach3 set to sec not msec) before motion will begin.

M3 S5000
G4 P10

(;-) TP