ATC: MACH3 M06 tool change macro for USOVO

Project history

1. Evaluating my choices in  back in February
2. Decided on what ATC system to get in March. (posting contains MACH3 software references)
3. The Usovo spindle and parts finally arrived in April
4. Mounting spindle and cables in May
5. Defining M06 tool change macro
6. Next project: designing a chain link tool library

I managed to get my automated tool changer to work.
Due to a compressor failure and missing part to get the new compressor operational, this was delayed FOR A LONG TIME.
It was a few minuted before I had to leave, so sorry for the crappy cellphone video.
(Also the youtube "stabilize video" algorithm makes my feed drunk.)
It's also still in debugging mode with a very low feedrate and a "continue"/"abort" question at every step in case something doesn't fit.
I also haven't done any tool length probing yet.
The front side of the tool magazine is too low because it sits on a temporary mount for the 4th axis that I am about to replace with a thicker version machined from POM. However for that I need the ATC to work.

 

Discussions:

• cnc-zone

Sources:

• This is based on this forum thread.
• and this one

Screens

First we need to place a new user-defined DRO "1212" on one of the screens. It holds the OLD TOOL. This can be done with the mach3screen.exe screen- editor.
It is assigned at the end of the last M6End.m1s macro.

Code

M6Start.m1s

'M6 start macro with auto tool touch off

'M6Start.m1s

'Check all axes referenced
If (GetOemLed(807) Or GetOemLed(808) Or GetOemLed(809)) Then
   Message(" Please Home Machine before Tool Change")

   'Cycle Stop
   ' Button 3 - select Toolpath screen
   DoButton(3)

   Exit Sub
End If


'--------------- CONFIGURATION

' the X+y+z position of tool #0 is stored in DRO 1200, 1201, 1202
' THESE USER-DEFINED DROS MUST BE DEFINED IN THE SCREEN SET
' distance of tools inside the magazine along the Y axis
TOOLDISTANCE = 33.5
TOOLDISTANCE_Z = (33.5-36.5)/5
TOOLCHANGE_FEEDRATE = 150

' safe absolute Z position
SafeZ = 0
SafeX = 65

' position of the tool height sensor (magazine must be open)
THS_POS_X = 0
THS_POS_Y = 0
THS_POS_Z = 0
THS_PROBE_FEEDRATE = 5

' Thickness of touch plate in the offset-screen
PlateThickness = GetOEMDRO(1001)


'--------------- CURRENT PARAMETERS TO RESTORE

' Save the current feedrate.
CurrentFeed = GetOemDRO(818)

' Save current coordinate mode to restore it later
oldCoordinateMode = GetOemLED(48)

' Set absolute coordinate mode and feedrate
Code "G90 F" & TOOLCHANGE_FEEDRATE

' Save the current position
' WARNING, THESE DROS ARE DEPRECATED SINCE MACH3 1.90
CurrentPosX = GetDro(0)
CurrentPosY = GetDro(1)
CurrentPosZ = GetDro(2)




'--------------- TOOL CHANGE

tool = GetselectedTool()
oldTool = GetCurrentTool() 'GetOEMDRO(1212)
If oldTool = tool Then
  Answer = MsgBox("old tool and new tool are identical", 0 + 16 )
  Exit Sub
End If

Answer = MsgBox("experimental tool change from tool " & oldTool  & " to new tool " & tool, 0)


DoSpinStop()

' use the user LED to store the state of coolant,
' so it can be restored in M6end.m1s
If getoemled(13) Then
   'OEM LED 13 = "Flood LED" thus coolant is on
   ' set user led on
   setuserled(1000,1)
   Code "M9"
Else
   'coolent is off
   ' set user led off
   setuserled(1000, 0)
End If

'Get the tool change pos from the settings page
ChangeX    = 24                             '=GetOEMDRO(1200)
ChangeYold = 35 + (oldTool * TOOLDISTANCE)  '=GetOEMDRO(1201) + (oldTool * TOOLDISTANCE)
ChangeYnew = 35 + (Tool    * TOOLDISTANCE)  '=GetOEMDRO(1201) + (tool * TOOLDISTANCE)
ChangeZold = -33 + (oldTool * TOOLDISTANCE_Z)                            '=GetOEMDRO(1202)
ChangeZnew = -33 + (Tool * TOOLDISTANCE_Z)

While IsMoving ()
Wend

'===== DEBUG====
Response = MsgBox ( "moving to Zsafe=" & SafeZ & " quickly", 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====

' G53 = Move in absolute machine coordinate system
Code("G00 G53 Z" & SafeZ)
While IsMoving ()
Wend

' open magazine
ActivateSignal(OUTPUT2)


If CurrentPosX < SafeX Then
     '===== DEBUG====
   Response = MsgBox ( "We are above the tool magazine, moving to SafeX=" & SafeX & " quickly" , 1 )
   If Response = 2 Then ' Cancel pressed
      Response = MsgBox ( "Aborting" , 1 + 16 )
      End
   End If
   '===== DEBUG====


   ' go to old tool position in Y
   Code("G00 G53 X" & Safex)
   While IsMoving ()
   Wend

     '===== DEBUG====
   Response = MsgBox ( "moving to y_oldtool=" & ChangeYold & " quickly", 1 )
   If Response = 2 Then ' Cancel pressed
      Response = MsgBox ( "Aborting" , 1 + 16 )
      End
   End If
   '===== DEBUG====


   ' go to old tool position in Y
   Code("G00 G53 Y" & ChangeYold)
   While IsMoving ()
   Wend

   
Else
  '===== DEBUG====
   Response = MsgBox ( "moving to y_oldtool=" & ChangeYold & " quickly", 1 )
   If Response = 2 Then ' Cancel pressed
      Response = MsgBox ( "Aborting" , 1 + 16 )
      End
   End If
   '===== DEBUG====


   ' go to old tool position in Y
   Code("G00 G53 Y" & ChangeYold)
   While IsMoving ()
   Wend

     '===== DEBUG====
   Response = MsgBox ( "moving to SafeX=" & SafeX & " quickly", 1 )
   If Response = 2 Then ' Cancel pressed
      Response = MsgBox ( "Aborting" , 1 + 16 )
      End
   End If
   '===== DEBUG====


   ' go to old tool position in X
   Code("G00 G53 X" & Safex)
   While IsMoving ()
   Wend

   
End If


'===== DEBUG====
Response = MsgBox ( "Moving down to ChangeZold=" & ChangeZold & " quickly" , 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====


' go to old tool position in Z
Code("G00 G53 Z" & ChangeZold)
While IsMoving ()
Wend



'===== DEBUG====
Response = MsgBox ( "Placing tool in X=" & ChangeX & " slowly" , 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====


' go to old tool position in X
Code("G01 G53 X" & ChangeX & " F" & TOOLCHANGE_FEEDRATE)
While IsMoving ()
Wend

'===== DEBUG====
Response = MsgBox ( "releasing the old tool" , 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====


' release the old tool
ActivateSignal(OUTPUT1)

'===== DEBUG====
Response = MsgBox ( "moving up to SafeZ slowly" , 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====

' move up
Code("G01 G53 Z" & SafeZ & " F" & TOOLCHANGE_FEEDRATE)
While IsMoving ()
Wend


'===== DEBUG====
Response = MsgBox ( "moving over to y=" & ChangeYnew & " quick", 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====


' go to old tool position in Y
Code("G00 G53 Y" & ChangeYnew)
While IsMoving ()
Wend

'===== DEBUG====
Response = MsgBox ( "lowering to Znew" & ChangeZnew & " slowly", 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====

' move up
Code("G01 G53 Z" & ChangeZnew & " F" & TOOLCHANGE_FEEDRATE)
While IsMoving ()
Wend

'===== DEBUG====
Response = MsgBox ( "grabbing the new tool" , 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====


' release the old tool
DeActivateSignal(OUTPUT1)


'===== DEBUG====
Response = MsgBox ( "moving to  SafeX=" & SafeX & " slowly", 1 )
If Response = 2 Then ' Cancel pressed
   End
End If
'===== DEBUG====


' carry the tool out
Code("G01 G53 X" & SafeX & " F" & TOOLCHANGE_FEEDRATE)
While IsMoving ()
Wend



'--------------- TOOL HEIGHT PROBE
Response = MsgBox ( "Would you like to set your Z height automatically? If so, click OK", 1 )
If Response = 1 Then
' TODO THIS HAS NOT BEEN TESTED YET


  ' go to tool height sensor position
  Code "G00 G53 X" & THS_POS_X & "Y" & THS_POS_Y
  While IsMoving ()
  Wend

  While GetOemLed (825)=0
      Message ("(Z-Plate is grounded, check connection and dismiss this dialog)")
  Wend

  Code "G31 Z-5 F" & THS_PROBE_FEEDRATE
  While IsMoving()
  Wend

  'dwell for 0.25 seconds 
  Sleep(250)

  ZProbePos = GetVar(2002)

  'Go back to touch position (G31 backs off after touch)
  Code "G0 Z" & ZProbePos
  While IsMoving ()
  Wend

  'Set Z axis position DRO to touch plate thickness
  ' WARNING, THIS DRO IS DEPRECATED SINCE MACH3 1.90
  Call SetDro (2, PlateThickness)

  'Pause 0.5 seconds for Dro to update.
  Sleep(500)

  ' go up again
  Code "G00 G53 Z" & SafeZ
  While IsMoving ()
  Wend

  Code "(Z axis is now zeroed)"
  ' restore the original feedrate
  Code "F" & CurrentFeed
End If

SetCurrentTool( tool )

' close magazine
DeActivateSignal(OUTPUT1)


'--------------- RESTORE ORIGINAL PARAMETERS

' Reset coordinate mode to original value
If AbsMode = 0 Then
   Code("G91")
End If

'===== DEBUG====
'Response = MsgBox ( "moving to back to " & CurrentPosX  & " - " & CurrentPosY &" , then Z=" & CurrentPosZ , 1 )
'If Response = 0 Then ' Cancel pressed
'   End
'End If
'===== DEBUG====

' go to old tool position
'Code("G00 G53 X" & CurrentPosX & "Y" & CurrentPosY)
'While IsMoving ()
'Wend
' go to old tool position
'Code("G00 G53 Z" & CurrentPosZ)
'While IsMoving ()
'Wend


' Reset feedrate to original value
Code("F" & CurrentFeed)            

M6End.m1s

'M6End.m1s

tool = GetDRO(24)
oldTool = GetOEMDRO(1212)

' check user led
If getuserled(1000) Then
   'coolant was on
   Code "M8"
End If

If (oldTool <>  tool) Then
   SetOEMDRO(1212, tool)
End If