Messages

551

Mach3 under Vista / Re: homing question

« on: August 20, 2020, 07:47:42 PM »

Sticky/Slow switch?

552

VB and the development of wizards / Re: Mach3 Turn-ATC M6 Error "M6Start unexpected ERROR TRAP!"

« on: August 20, 2020, 07:45:42 PM »

You need to look at the M6Start macro

553

Mach4 General Discussion / Re: Touch sensor mounted at side of spindle.

« on: August 20, 2020, 07:09:13 PM »

you need to add code to the probing macros you are using allowing for the distance in x&y to the centre of the spindle

554

Mach3 under Vista / Re: homing question

« on: August 20, 2020, 07:01:40 PM »

Check what is in the Home Off. column under Homing/Limits
 

555

Mach4 General Discussion / Re: CV Tuning Wizard

« on: August 18, 2020, 02:52:10 PM »

A picture of the problem and a sample of the code may help

556

General Mach Discussion / Re: Mach 3 stopping Ref All Home after Y (not moving A axis to alignment switch)

« on: August 18, 2020, 08:52:51 AM »

Do you have Softlimits turned on?

557

Mach4 General Discussion / Re: CV Tuning Wizard

« on: August 18, 2020, 08:39:10 AM »

You can add a G61 to the start of the finishing path to turn off CV, it could also be you need to slow the feed for the corners.

558

G-Code, CAD, and CAM discussions / Re: M3 and M5 for plasma on off execute early

« on: August 17, 2020, 09:51:51 AM »

Check out G61 exact stop mode, finish last move before next command, no blending and G64 constant velocity mode normal profiling mode with blending of moves.

559

Mach4 General Discussion / Re: 3D touch-probe with large offset to spindel

« on: August 17, 2020, 09:46:57 AM »

It is normal to calibrate the probe at 0,0 once that is done the exact offset from the probe to the spindle c/l can be measured using a clock and the offset stored in some DRO's

Then when setting a fixture datum the probes found position can be offset with a G10 command to correct the position ether in the probe macros or with a MDI/button command on screen.

560

VB and the development of wizards / Re: Mach3 Lathe Automatic Tool Turret Help needed.

« on: August 17, 2020, 09:19:55 AM »

Here is the code I did for pawl lock back type tool changers it uses incremental moves to stop the counting errors, it may not be right for a straight swap but the code may be of use.

Code: [Select]


 ' (C) Graham Waterworth Mach forum.
' rough draft for a lock back to pawl type tool changer
' this has not been tried on any tool changer
' use/modify it as you wish, I take no responsability
' for any damage to you or your equipment.

If IsLoading() Then
  ' do now't, program loading
Else

' dim some vars

  Dim next_tool As Integer
  Dim current_tool As Integer
  Dim steps_per_tool As Integer
  Dim steps_after_pawl As Integer
  Dim max_tools As Integer
  Dim holdingDRO As Integer
  Dim rotateCW As Integer
  Dim moves As Integer
  Dim fast_feed As Integer
  Dim slow_feed As Integer
  Dim axis As String
  Dim zero As Integer
  Dim to_pawl As Integer

' set up some vars

  zero = 0
  axis = "A" ' change to what ever axis you use for tool changer
  rotateCW = 0 ' set to 1 for CCW and 0 for CW rotation
  max_tools = 6 ' number of tools on turret
  steps_per_tool= 100 ' set to what ever it needs to be
  steps_after_pawl = 10 ' set to amount to clear pawl
  steps_to_lock_back_on_pawl =10 ' number of steps to lock onto pawl
  holdingDRO=1050 ' or what ever you have set screen dro to
  next_tool = GetSelectedTool()
  current_tool = GetCurrentTool()
  fast_feed = 2500 ' set to safe rapid rotation speed
  slow_feed = 500 ' set to safe creep speed back onto pawl.

' do some tool changing

  If next_tool > max_tools Then
    Message "Tool number too high, program stopped."
    Code "M30"
    End
  End If
  If next_tool<1 Then
    Message "Tool number too low, program stopped."
    Code "M30"
    End
  End If
  If next_tool=current_tool Then
    ' do nowt, we got it already
  Else
  ' lets do some changing
    If next_tool>current_tool Then moves=next_tool-current_tool 
    If next_tool<current_tool Then moves=max_tools-current_tool+next_tool
    rapid_move = (moves * steps_per_tool) + steps_after_pawl
    to_pawl = zero - steps_to_lock_back_on_pawl
    If rotateCW =1 Then
      rapid_move = zero - rapid_move
      to_pawl =  Abs(to_pawl)
    End If
    Code "G92 " & axis & "0"
    Code "G91 G94 G61"
    Code "G01 " & axis & rapid_move & "F" & fast_feed
    Code "G04 P250"
    While IsMoving()
    Wend
    Code "G01 " & axis & to_pawl &  "F" & slow_feed
    While IsMoving()
    Wend
    SetCurrentTool next_tool
    SetUserDRO holdingDRO, next_tool
    Code "G90" ' back to absolute movement
  End If
End If

' end of tool change